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Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

UK scenario of islanded operation of active distribution networks with renewable distributed generators  

Science Journals Connector (OSTI)

This paper reports on the current UK scenario of islanded operation of active distribution networks with renewable distributed generators (RDGs). Different surveys indicate that the present scenario does not economically justify islanding operation of active distribution networks with RDGs. With rising DG penetration, much benefit would be lost if the \\{DGs\\} are not allowed to island only due to conventional operational requirement of utilities. Technical studies clearly indicate the need to review parts of the Electricity Safety, Quality and Continuity Regulations (ESQCR) for successful islanded operations. Commercial viability of islanding operation must be assessed in relation to enhancement of power quality, system reliability and supply of potential ancillary services through network support. Demonstration projects under Registered Power Zone and Technical Architecture Projects should be initiated to investigate the utility of DG islanding. However these efforts should be compounded with a realistic judgement of the associated technical and economic issues for the development of future power networks beyond 2010.

S.P. Chowdhury; S. Chowdhury; P.A. Crossley

2011-01-01T23:59:59.000Z

2

Operating Reserves and Variable Generation  

SciTech Connect (OSTI)

This report tries to first generalize the requirements of the power system as it relates to the needs of operating reserves. It also includes a survey of operating reserves and how they are managed internationally in system operations today and then how new studies and research are proposing they may be managed in the future with higher penetrations of variable generation.

Ela, E.; Milligan, M.; Kirby, B.

2011-08-01T23:59:59.000Z

3

Network Operating Systems Partha Dasgupta  

E-Print Network [OSTI]

Network Operating Systems Partha Dasgupta Department of Computer Science and Engineering Arizona of Electrical Engineering] 1. Introduction Network Operating Systems extend the facilities and services provided by computer operating systems to support a set of computers, connected by a network. The environment managed

Dasgupta, Partha

4

Tide operated power generating apparatus  

SciTech Connect (OSTI)

An improved tide operated power generating apparatus is disclosed in which a hollow float, rising and falling with the ocean tide, transmits energy to a power generator. The improvement comprises means for filling the float with water during the incoming tide to provide a substantial increase in the float dead weight during the outgoing tide. Means are further provided to then empty the float before the outgoing tide whereby the float becomes free to rise again on the next incoming tide.

Kertzman, H. Z.

1981-02-03T23:59:59.000Z

5

Rule generation from neural networks  

SciTech Connect (OSTI)

The neural network approach has proven useful for the development of artificial intelligence systems. However, a disadvantage with this approach is that the knowledge embedded in the neural network is opaque. In this paper, we show how to interpret neural network knowledge in symbolic form. We lay down required definitions for this treatment, formulate the interpretation algorithm, and formally verify its soundness. The main result is a formalized relationship between a neural network and a rule-based system. In addition, it has been demonstrated that the neural network generates rules of better performance than the decision tree approach in noisy conditions. 7 refs.

Fu, L. [Univ. of Florida, Gainesville, FL (United States)

1994-08-01T23:59:59.000Z

6

Definition: Optimized Generator Operation | Open Energy Information  

Open Energy Info (EERE)

Optimized Generator Operation Optimized Generator Operation Jump to: navigation, search Dictionary.png Optimized Generator Operation Better forecasting and monitoring of load and grid performance would enable grid operators to dispatch a more efficient mix of generation that could be optimized to reduce cost. The coordinated operation of energy storage, distributed generation, or plug-in electric vehicle assets could also result in completely avoiding central generation dispatch.[1] Related Terms sustainability References ↑ SmartGrid.gov 'Description of Benefits' An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Optimized_Generator_Operation&oldid=502509" Categories:

7

Network Reconfiguration at the Distribution System with Distributed Generators  

Science Journals Connector (OSTI)

This article proposes a novel model for distribution network reconfiguration to meet current distribution system operating demands. In the model the connection of distributed generators to distribution system is ...

Gao Xiaozhi; Li Linchuan; Xue Hailong

2010-01-01T23:59:59.000Z

8

Thermoelectric generator apparatus and operation method  

SciTech Connect (OSTI)

A method of operating a thermoelectric generator includes: cyclically producing increasing then decreasing temperature differences in the thermoelectric material of the generator; and generating a cyclically increasing then decreasing electrical generator output signal, in response to such temperature differences, to transmit electrical power generated by the generator from the generator. Part of the thermoelectric material reaches temperatures substantially above the melting temperature of the material. The thermoelectric material of the generator forms a part of a closed electrical loop about a transformer core so that the inductor voltage for the loop serves as the output signal of the generator. A thermoelectric generator, which can be driven by the described method of operation, incorporates fins into a thermopile to conduct heat toward or away from the alternating spaces between adjacent layers of different types of thermoelectric material. The fins extend from between adjacent layers, so that they can also conduct electrical current between such layers, perpendicularly to the direction of stacking of the layers. The exhaust from an internal combustion engine can be employed to drive the thermoelectric generator, and, also, to act as a driver for a thermoelectric generator in accordance with the method of operation initially described.

Lowther, F.E.

1984-07-31T23:59:59.000Z

9

Stochastic Generator of Chemical Structure. 3. Reaction Network Generation  

SciTech Connect (OSTI)

A new method to generate chemical reaction network is proposed. The particularity of the method is that network generation and mechanism reduction are performed simultaneously using sampling techniques. Our method is tested for hydrocarbon thermal cracking. Results and theoretical arguments demonstrate that our method scales in polynomial time while other deterministic network generator scale in exponential time. This finding offers the possibility to investigate complex reacting systems such as those studied in petroleum refining and combustion.

FAULON,JEAN-LOUP; SAULT,ALLEN G.

2000-07-15T23:59:59.000Z

10

The Operational Weather Radar Network in Europe  

Science Journals Connector (OSTI)

The operational weather radar network in Europe covers more than 30 countries and contains more than 200 weather radars. The radar network is heterogeneous in hardware, signal processing, transmit/receive frequency, and scanning strategy, thus making it ...

Asko Huuskonen; Elena Saltikoff; Iwan Holleman

2014-06-01T23:59:59.000Z

11

Managing Complex Network Operation with Predictive Analytics  

SciTech Connect (OSTI)

Complex networks play an important role in modern societies. Their failures, such as power grid blackouts, would lead to significant disruption of people’s life, industry and commercial activities, and result in massive economic losses. Operation of these complex networks is an extremely challenging task due to their complex structures, wide geographical coverage, complex data/information technology systems, and highly dynamic and nonlinear behaviors. None of the complex network operation is fully automated; human-in-the-loop operation is critical. Given the complexity involved, there may be thousands of possible topological configurations at any given time. During an emergency, it is not uncommon for human operators to examine thousands of possible configurations in near real-time to choose the best option and operate the network effectively. In today’s practice, network operation is largely based on experience with very limited real-time decision support, resulting in inadequate management of complex predictions and inability to anticipate, recognize, and respond to situations caused by human errors, natural disasters, and cyber attacks. A systematic approach is needed to manage the complex operation paradigms and choose the best option in a near-real-time manner. This paper applies predictive analytics techniques to establish a decision support system for complex network operation management and help operators to predict potential network failures and adapt the network to adverse situations. The resultant decision support system enables continuous monitoring of network performance and turns large amounts of data into actionable information. Examples with actual power grid data are presented to demonstrate the capability of this proposed decision support system.

Huang, Zhenyu; Wong, Pak C.; Mackey, Patrick S.; Chen, Yousu; Ma, Jian; Schneider, Kevin P.; Greitzer, Frank L.

2008-03-26T23:59:59.000Z

12

STOCHASTIC GENERATION OF BIOLOGICALLY ACCURATE BRAIN NETWORKS  

E-Print Network [OSTI]

STOCHASTIC GENERATION OF BIOLOGICALLY ACCURATE BRAIN NETWORKS A Thesis by ARAVIND ALURI Submitted OF BIOLOGICALLY ACCURATE BRAIN NETWORKS A Thesis by ARAVIND ALURI Submitted to the Office of Graduate Studies Head of Department, Valerie Taylor December 2005 Major Subject: Computer Science #12;iii ABSTRACT

13

Operation of a third generation wind turbine  

SciTech Connect (OSTI)

A modern wind turbine was installed on May 26, 1982, at the USDA Conservation and Production Research Laboratory, Bushland, Texas. This wind machine was used to provide electrical energy for irrigation pumping and other agricultural loads. The wind turbine purchased for this research is an Enertech Model 44, manufactured by Enertech Corporation, Norwich, Vermont. The horizontal-axis wind turbine has a 13.4 m diameter, three-bladed, fixed-pitch rotor on a 24.4-m tower. The blades are laminated epoxy-wood, and are attached to a steel hub. A 25-kW induction generator provides 240 V, 60 Hz, single-phase electrical power. The wind turbine operated 64 percent of the time, while being available to operate over 94 percent of the time. The unit had a net energy production of over 80,000 kWh in an average windspeed of 5.9 m/s at a height of 10 m in a 16-month period. The blade pitch was originally offset two degrees from design to maintain power production within the limitations of the gearbox, generator, and brakes. A maximum output of 23.2 kW averaged over a 15-second period indicated that with a new brake, the system was capable of handling more power. After a new brake was installed, the blade pitch was changed to one degree from design. The maximum power output measured after the pitch change was 29.3 kW. Modified blade tip brakes were installed on the wind turbine on July 7, 1983. These tip brakes increased power production at lower windspeeds while reducing power at higher windspeeds.

Vosper, F.C.; Clark, R.N.

1983-12-01T23:59:59.000Z

14

The generation of oscillations in networks of electrically coupled cells  

E-Print Network [OSTI]

The generation of oscillations in networks of electrically coupled cells Y. Loewenstein* , Y. Yarom systems, the electrical coupling of nonoscil- lating cells generates synchronized membrane potential dynam- ics. We show that strong electrical coupling in this network generates multiple oscillatory

Loewenstein, Yonatan

15

Safe Operation of Backup Power Generators  

E-Print Network [OSTI]

E-395 04/06 Portable generators are useful when temporary or remote electric power is needed, but they can also be deadly. The primary hazards to avoid when us- ing a generator are carbon monoxide (CO) poison- ing from generator exhaust fumes..., electrocution and fire. Carbon monoxide danger Carbon monoxide is an odorless, colorless gas byproduct of incomplete combustion of fuels, such as natural gas, heating oil and diesel. This toxic gas interferes with the blood?s ability to carry oxygen...

Smith, David

2006-04-19T23:59:59.000Z

16

Modeling Operational Constraints imposed by Renewable Generation  

E-Print Network [OSTI]

investments on ­ Generation, Transmission ­ Fuel & Transportation infrastructure · Capacity · Location · Year Regulation data and Net Load change data ­ ex: ERCOT 2. Function of variability in (Net load + Generation schedule + Tie line frequency) · ex: CAISO, NREL, Xcel MN & Wind Logics 3. Fit regression model

Daniels, Thomas E.

17

Operator theory of electrical resistance networks  

E-Print Network [OSTI]

A resistance network is a weighted graph $(G,c)$ with intrinsic (resistance) metric $R$. We embed the resistance network into the Hilbert space ${\\mathcal H}_{\\mathcal E}$ of functions of finite energy. We use the resistance metric to study ${\\mathcal H}_{\\mathcal E}$, and vice versa and show that the embedded images of the vertices $\\{v_x\\}$ form a reproducing kernel for this Hilbert space. We also obtain a discrete version of the Gauss-Green formula for resistance networks and show that resistance networks which support nonconstant harmonic functions of finite energy have a certain type of \\emph{boundary}. We obtain an analytic boundary representation for the harmonic functions of finite energy in a sense analogous to the Poisson or Martin boundary representations, but with different hypotheses, and for a different class of functions. In the process, we construct a dense space of "smooth" functions of finite energy and obtain a Gel'fand triple for ${\\mathcal H}_{\\mathcal E}$. This allows us to represent the resistance network as a system of Gaussian random variables indexed by vertices. We also study the spectral representation for $\\Delta$ on ${\\mathcal H}_{\\mathcal E}$ and show how nonzero defect entails a nontrivial boundary. All of the above are are detected by the operator theory of ${\\mathcal H}_{\\mathcal E}$ but not $\\ell^2$. Our results apply to the Heisenberg model for the isotropic ferromagnet, improving earlier results of R. T. Powers on the problem of long-range order (in reference to KMS states on the $C^\\ast$-algebra of the model).

Palle E. T. Jorgensen; Erin P. J. Pearse

2008-06-23T23:59:59.000Z

18

Generation of Gradients Having Complex Shapes Using Microfluidic Networks  

E-Print Network [OSTI]

Generation of Gradients Having Complex Shapes Using Microfluidic Networks Stephan K. W. Dertinger, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 This paper describes the generation each carrying different concentrations of substances laminarly and side-by-side generated step

Prentiss, Mara

19

Generation of quantum logic operations from physical Hamiltonians  

E-Print Network [OSTI]

We provide a systematic analysis of the physical generation of single- and two-qubit quantum operations from Hamiltonians available in various quantum systems for scalable quantum information processing. We show that generation of one-qubit operations can be transformed into a steering problem on the Bloch sphere, whereas the two-qubit problem can be generally transformed into a steering problem in a tetrahedron representing all the local equivalence classes of two-qubit operations (the Weyl chamber). We use this approach to investigate several physical examples for the generation of two-qubit operations. The steering approach provides useful guidance for the realization of various quantum computation schemes.

Jun Zhang; K. Birgitta Whaley

2004-12-22T23:59:59.000Z

20

Horizontal Integration, an AS – Telecom Network Operations Case Study  

E-Print Network [OSTI]

Horizontal integration within the network operations department’s Wireless Data, VoIP, and IP teams will greatly improve network availability and quality of service to AS – Telecom customers by empowering employees, improving communication...

Kekovole, Stephen Andaye

2011-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

DOE Launches First Segment of its Next-Generation Nationwide Network to  

Broader source: Energy.gov (indexed) [DOE]

First Segment of its Next-Generation Nationwide First Segment of its Next-Generation Nationwide Network to Support Scientific Research Efforts DOE Launches First Segment of its Next-Generation Nationwide Network to Support Scientific Research Efforts May 30, 2007 - 1:24pm Addthis WASHINGTON, DC- The U.S. Department of Energy's (DOE) Office of Science and Internet2 announced today that the first segment of a next-generation, nationwide network has gone live, marking a key step in significantly upgrading networking services to thousands of scientific researchers across the country and around the world. The first complete national ring of DOE's Energy Sciences Network (ESnet4) will be rolled out segment by segment from the east coast to the west coast and is expected to be fully operational by September, 2007.

22

A Supply Chain Network Perspective for Electric Power Generation, Supply, Transmission, and Consumption  

E-Print Network [OSTI]

the economics of power production. For example, new gas-fired combined cycle power plants are more effi- cientA Supply Chain Network Perspective for Electric Power Generation, Supply, Transmission the behavior of the various decision-makers, who operate in a decentralized manner and include power generators

Nagurney, Anna

23

Authorizations to Operate for the Energy Sciences Network Enclave (ESnet)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

About ESnet » Governance » Authorizations to Operate for the About ESnet » Governance » Authorizations to Operate for the Energy Sciences Network Enclave (ESnet) About ESnet Overview ESnet Staff Governance ESnet Acceptable Use Policy Site Coordinators Authorizations to Operate for the Energy Sciences Network Enclave (ESnet) Policy Board Our Network Case Studies ESnet Strategic Plan ESnet Organizational Chart ESnet History Science Requirements Careers Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Authorizations to Operate for the Energy Sciences Network Enclave (ESnet) The following letters include Lawrence Berkeley National Laboratory Authority to Operate the Energy Sciences Network Enclave (ESnet) from the

24

Optimal Operation for Cogenerating System of Micro-grid Network  

Science Journals Connector (OSTI)

This paper presents a mathematical model for optimal operating cogeneration of Micro-Grid Network. The electrical and thermal energy production ... solution of Optimal operation for cogenerating system of micro-grid

Phil-Hun Cho; Hak-Man Kim; Myong-Chul Shin…

2005-01-01T23:59:59.000Z

25

NREL: Energy Analysis - Distributed Generation Energy Technology Operations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Operations and Maintenance Costs Operations and Maintenance Costs Transparent Cost Database Button The following charts indicate recent operations and maintenance (O&M) cost estimates for distributed generation (DG) renewable energy technologies. The charts provide a compilation of available national-level cost data from a variety of sources. Costs in your specific location will vary. The red horizontal lines represent the first standard deviation of the mean. The U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) sponsored the distributed generation data used within these charts. If you are seeking utility-scale technology operations and maintenance estimates, please visit the Transparent Cost Database website for NREL's information regarding vehicles, biofuels, and electricity generation.

26

Distributed Medium Access Control for Next Generation CDMA Wireless Networks  

E-Print Network [OSTI]

Distributed Medium Access Control for Next Generation CDMA Wireless Networks Hai Jiang, Princeton wireless networks are expected to have a simple infrastructure with distributed control. In this article, we consider a generic distributed network model for future wireless multi- media communications

Zhuang, Weihua

27

Integrated operation of electric vehicles and renewable generation in a smart distribution system  

Science Journals Connector (OSTI)

Abstract Distribution system complexity is increasing mainly due to technological innovation, renewable Distributed Generation (DG) and responsive loads. This complexity makes difficult the monitoring, control and operation of distribution networks for Distribution System Operators (DSOs). In order to cope with this complexity, a novel method for the integrated operational planning of a distribution system is presented in this paper. The method introduces the figure of the aggregator, conceived as an intermediate agent between end-users and DSOs. In the proposed method, energy and reserve scheduling is carried out by both aggregators and DSO. Moreover, Electric Vehicles (EVs) are considered as responsive loads that can participate in ancillary service programs by providing reserve to the system. The efficiency of the proposed method is evaluated on an 84-bus distribution test system. Simulation results show that the integrated scheduling of \\{EVs\\} and renewable generators can mitigate the negative effects related to the uncertainty of renewable generation.

Alireza Zakariazadeh; Shahram Jadid; Pierluigi Siano

2015-01-01T23:59:59.000Z

28

Introduction Operations Management of Blood Banking Systems Blood Banking Systems Network Design Supply Chain Network  

E-Print Network [OSTI]

Introduction Operations Management of Blood Banking Systems Blood Banking Systems Network Design Supply Chain Network Operations Management and Design of A Sustainable Blood Banking System Amir Masoumi of Massachusetts Amherst #12;Introduction Operations Management of Blood Banking Systems Blood Banking Systems

Nagurney, Anna

29

Nonlinear DSTATCOM controller design for distribution network with distributed generation to enhance voltage stability  

E-Print Network [OSTI]

Nonlinear DSTATCOM controller design for distribution network with distributed generation Accepted 19 June 2013 Keywords: Distributed generation Distribution network DSATACOM Partial feedback connected to a distribution network with distributed generation (DG) to regulate the line voltage

Pota, Himanshu Roy

30

The automatic generation of mutation operators for genetic algorithms  

Science Journals Connector (OSTI)

We automatically generate mutation operators for Genetic Algorithms (GA) and tune them to problem instances drawn from a given problem class. By so doing, we perform metalearning in which the base-level contains GAs (which learn about problem instances), ... Keywords: automatic design, genetic algorithms, genetic programming, hyper-heuristics

John R. Woodward; Jerry Swan

2012-07-01T23:59:59.000Z

31

Neural networks as perpetual information generators  

Science Journals Connector (OSTI)

The information gain in a neural network cannot be larger than the bit capacity of the synapses. It is shown that the equation derived by Engel et al. [Phys. Rev. A 42, 4998 (1990)] for the strongly diluted network with persistent stimuli contradicts this condition. Furthermore, for any time step the correct equation is derived by taking the correlation between random variables into account.

Harald Englisch; Yegao Xiao; Kailun Yao

1991-07-15T23:59:59.000Z

32

White Space Ecosystem: A Secondary Network Operator's Perspective  

E-Print Network [OSTI]

1 White Space Ecosystem: A Secondary Network Operator's Perspective Yuan Luo, Lin Gao, and Jianwei Huang Abstract--The successful deployment of a TV white space network requires the coordination-users), which form the White Space Ecosystem. In this paper, we study the white space ecosystem from

Huang, Jianwei

33

Singlet generation in mixed-state quantum networks  

SciTech Connect (OSTI)

We study the generation of singlets in quantum networks with nodes initially sharing a finite number of partially entangled bipartite mixed states. We prove that singlets between arbitrary nodes in such networks can be created if and only if the initial states connecting the nodes have a particular form. We then generalize the method of entanglement percolation, previously developed for pure states, to mixed states of this form. As part of this, we find and compare different distillation protocols necessary to convert groups of mixed states shared between neighboring nodes of the network into singlets. In addition, we discuss protocols that only rely on local rules for the efficient connection of two remote nodes in the network via entanglement swapping. Further improvements of the success probability of singlet generation are developed by using particular forms of ''quantum preprocessing'' on the network. This includes generalized forms of entanglement swapping and we show how such strategies can be embedded in regular and hierarchical quantum networks.

Broadfoot, S.; Dorner, U. [Clarendon Laboratory, University of Oxford, Oxford OX1 3PU (United Kingdom); Jaksch, D. [Clarendon Laboratory, University of Oxford, Oxford OX1 3PU (United Kingdom); Centre for Quantum Technologies, National University of Singapore, 117543 (Singapore)

2010-04-15T23:59:59.000Z

34

Houston LDAR II network: design, operation, and performance analysis  

E-Print Network [OSTI]

HOUSTON LDAR II NETWORK: DESIGN, OPERATION, AND PERFORMANCE ANALYSIS A Dissertation by BRANDON LEE ELY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY August 2008 Major Subject: Atmospheric Sciences HOUSTON LDAR II NETWORK: DESIGN, OPERATION, AND PERFORMANCE ANALYSIS A Dissertation by BRANDON LEE ELY Submitted to the Office of Graduate Studies of Texas A...

Ely, Brandon Lee

2008-10-10T23:59:59.000Z

35

The pervasive trust foundation for security in next generation networks  

Science Journals Connector (OSTI)

We propose a new paradigm---named the Pervasive Trust Foundation (PTF) ---for computer security in Next Generation Networks, including the Future Internet. We start with a review of basic trust-related terms and concepts. We present motivation ... Keywords: future internet, iso 7498-2, next generation networks, pervasive trust foundation, privacy, security, security mechanisms, security services, trust, trust in the large, trust in the small

Leszek Lilien; Adawia Al-Alawneh; Lotfi Ben Othmane

2010-09-01T23:59:59.000Z

36

Thévenin equivalents for inhomogeneous ladder networks of generators  

Science Journals Connector (OSTI)

We find general formulas for Thévenin equivalents (equivalent voltage and equivalent impedance) for inhomogeneous ladder networks of generators defined as a voltage source and an impedance in series. In the projective matrix representation, this is accomplished by adopting a special decomposition of a 3 ? 3 transfer matrix which transforms a product of transfer matrices to a product of diagonal matrices up to a prefactor and a postfactor. In particular, we calculate Thévenin equivalents in a closed form for two ladder networks of generators with a periodic transfer matrix of period 1 (tapered ladder network) and period 2.

Seok-In Hong; Je-Young Choi

2013-01-01T23:59:59.000Z

37

1 Spectrum Sharing Games of Network Operators and Cognitive Radios  

E-Print Network [OSTI]

Contents 1 Spectrum Sharing Games of Network Operators and Cognitive Radios Mohammad Hossein advances in radio technology, the spectrum regulators have opened some parts of the available spectrum operators and cognitive radios. Because of the dynamic nature of spectrum sharing, it is difficult

Bencsáth, Boldizsár

38

A First Look at Performance in Mobile Virtual Network Operators  

Science Journals Connector (OSTI)

Recent industry trends suggest a new phenomenon in the mobile market: mobile virtual network operators or MVNOs that operate on top of existing cellular infrastructures. While MVNOs have shown significant growth in the US and elsewhere in the past two ... Keywords: measurement, mobile, mvno, performance

Fatima Zarinni, Ayon Chakraborty, Vyas Sekar, Samir R. Das, Phillipa Gill

2014-11-01T23:59:59.000Z

39

Plugging of steam generator tubes and consequences for plant operation  

SciTech Connect (OSTI)

The simulation of pressurized water reactor (SIROP) code was created using the SICLE software developed by the study and research department at Electricite de France. It is the largest computer code with this software (260 tubes, 1800 computation points, 19 water-steam cavities, 9 pumps, 6 turbines, 32 control system elements). It simulates the general operating conditions of a 900-MW(electric) CP2 power plant by computing the main physical parameters from the reactor core to the condenser. The study was performed by the study and research department (Reactor Physics Division) with the help of SEPTEN following an SPT (power operation department) request. It consisted of identifying the change in margins with respect to emergency shutdown protections (especially for ..delta..T protections) as a function of the number of plugged steam generators (1, 2, or 3) and the degree of plugging (10, 20, and 30%) under the following operating conditions: (1) steady state at 100% full power; and (2) main transients: manual load rejection, load rejection induced by grid fault, turbine tripping. The purpose was to assess the effect of a large number of steam generator plugged tubes on the behavior of the plant to secure a long-term prediction for the date of replacement of these steam generators.

Agnoux, D.; Chenal, J.C.

1987-01-01T23:59:59.000Z

40

Phoebus: Network Middleware for Next-Generation Network Computing  

SciTech Connect (OSTI)

The Phoebus project investigated algorithms, protocols, and middleware infrastructure to improve end-to-end performance in high speed, dynamic networks. The Phoebus system essentially serves as an adaptation point for networks with disparate capabilities or provisioning. This adaptation can take a variety of forms including acting as a provisioning agent across multiple signaling domains, providing transport protocol adaptation points, and mapping between distributed resource reservation paradigms and the optical network control plane. We have successfully developed the system and demonstrated benefits. The Phoebus system was deployed in Internet2 and in ESnet, as well as in GEANT2, RNP in Brazil and over international links to Korea and Japan. Phoebus is a system that implements a new protocol and associated forwarding infrastructure for improving throughput in high-speed dynamic networks. It was developed to serve the needs of large DOE applications on high-performance networks. The idea underlying the Phoebus model is to embed Phoebus Gateways (PGs) in the network as on-ramps to dynamic circuit networks. The gateways act as protocol translators that allow legacy applications to use dedicated paths with high performance.

Martin Swany

2012-06-16T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

How memory generates heterogeneous dynamics in temporal networks  

E-Print Network [OSTI]

Empirical temporal networks display strong heterogeneities in their dynamics, which profoundly affect processes taking place on these networks, such as rumor and epidemic spreading. Despite the recent wealth of data on temporal networks, little work has been devoted to the understanding of how such heterogeneities can emerge from microscopic mechanisms at the level of nodes and links. Here we show that long-term memory effects are present in the creation and disappearance of links in empirical networks. We thus consider a simple generative modeling framework for temporal networks able to incorporate these memory mechanisms. This allows us to study separately the role of each of these mechanisms in the emergence of heterogeneous network dynamics. In particular, we show analytically and numerically how heterogeneous distributions of contact durations, of inter-contact durations and of numbers of contacts per link emerge. We also study the individual effect of heterogeneities on dynamical processes, such as the ...

Vestergaard, Christian L; Barrat, Alain

2014-01-01T23:59:59.000Z

42

Study of On-Board Ammonia (NH3) Generation for SCR Operation...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Study of On-Board Ammonia (NH3) Generation for SCR Operation Study of On-Board Ammonia (NH3) Generation for SCR Operation The feasibility of on-board ammonia generation was...

43

Distributed voltage control strategy for LV networks with inverter-interfaced generators  

Science Journals Connector (OSTI)

Abstract Low voltage distribution networks are characterized by an ever growing diffusion of single and three phase distributed generators whose unregulated operation may deplete the power quality levels, in particular as regard voltage profiles and unbalances. This issue is at present under discussion by several national and international standardization bodies and the general trend is to require, for the new connections of generators to medium and low voltage grids, their participation to the reactive power network management. In this paper a novel strategy proposes to control the network voltage unbalance suitably for coordinating single and three-phase inverter interfaced embedded generators, concurrently with a local volt/var regulation action as foreseen by the new grid connection requirements. Simulations conducted on case study network representing a typical Italian 4-wire LV distribution system under different load/generation conditions, demonstrate that the coordinated action of single-phase and three-phase inverters may considerably reduce the degree of unbalance thus improving the network power quality levels.

R. Caldon; M. Coppo; R. Turri

2014-01-01T23:59:59.000Z

44

Force generation by Myosin II Filaments in Compliant Networks  

E-Print Network [OSTI]

Myosin II isoforms with varying mechanochemistry and filament size interact with filamentous actin (F-actin) networks to generate contractile forces in cells. How their properties control force production in environments with varying stiffness is poorly understood. Here, we incorporated literature values for properties of myosin II isoforms into a cross-bridge model. Similar actin gliding speeds and force-velocity curves expected from previous experiments were observed. Motor force output on an elastic load was regulated by two timescales--that of their attachment to F-actin, which varied sharply with the ensemble size, motor duty ratio, and external load, and that of force build up, which scaled with ensemble stall force, gliding speed, and load stiffness. While such regulation did not require force-dependent kinetics, the myosin catch bond produced positive feedback between attachment time and force to trigger switch-like transitions from short attachments and small forces to high force-generating runs at threshold parameter values. Parameters representing skeletal muscle myosin, non-muscle myosin IIB, and non-muscle myosin IIA revealed distinct regimes of behavior respectively: (1) large assemblies of fast, low-duty ratio motors rapidly build stable forces over a large range of environmental stiffness, (2) ensembles of slow, high-duty ratio motors serve as high-affinity cross-links with force build-up times that exceed physiological timescales, and (3) small assemblies of low-duty ratio motors operating at intermediate speeds may respond sharply to changes in mechanical context--at low forces or stiffness, they serve as low affinity cross-links but they can transition to effective force production via the positive feedback mechanism described above. These results reveal how myosin isoform properties may be tuned to produce force and respond to mechanical cues in their environment.

Samantha Stam; Jon Alberts; Margaret L. Gardel; Edwin Munro

2014-07-08T23:59:59.000Z

45

Synthetic Generation of Social Network Data With Endorsements  

E-Print Network [OSTI]

In many simulation studies involving networks there is the need to rely on a sample network to perform the simulation experiments. In many cases, real network data is not available due to privacy concerns. In that case we can recourse to synthetic data sets with similar properties to the real data. In this paper we discuss the problem of generating synthetic data sets for a certain kind of online social network, for simulation purposes. Some popular online social networks, such as LinkedIn and ResearchGate, allow user endorsements for specific skills. For each particular skill, the endorsements give rise to a directed subgraph of the corresponding network, where the nodes correspond to network members or users, and the arcs represent endorsement relations. Modelling these endorsement digraphs can be done by formulating an optimization problem, which is amenable to different heuristics. Our construction method consists of two stages: The first one simulates the growth of the network, and the second one solves ...

Pérez-Rosés, Hebert

2014-01-01T23:59:59.000Z

46

Patch layout generation by detecting feature networks  

Science Journals Connector (OSTI)

Abstract The patch layout of 3D surfaces reveals the high-level geometric and topological structures. In this paper, we study the patch layout computation by detecting and enclosing feature loops on surfaces. We present a hybrid framework which combines several key ingredients, including feature detection, feature filtering, feature curve extension, patch subdivision and boundary smoothing. Our framework is able to compute patch layouts through concave features as previous approaches, but also able to generate nice layouts through smoothing regions. We demonstrate the effectiveness of our framework by comparing with the state-of-the-art methods.

Yuanhao Cao; Dong-Ming Yan; Peter Wonka

2014-01-01T23:59:59.000Z

47

New microcrack network generation in TSMTG YBCO.  

SciTech Connect (OSTI)

Melt Textured YBa{sub 2}Cu{sub 3}O{sub 7}/Y{sub 2}BaCuO{sub 5} (Y123/Y211) and Y123/Y211/CeO{sub 2} composites, have been grown by Top Seeding Melt Texturing growth (TSMTG). The initial powder mixture has been densified, through a pre-melting process carried out at 1000-1050 C under O{sub 2} atmosphere. This process leads to a strongly decreased porosity of the pellet. Afterwards, TSMTG is carried out in air atmosphere. The influence of the pre-melting process on the final microstructure has been analyzed by optical and scanning electron microscopy (SEM). Microstructural analysis reveals a high microcracking density. Three well defined microcrack orientations have been detected, one parallel the (001) planes and a new class of microcrack parallel the {l_brace}100{r_brace} planes. The latter is being produced by the pre-melting densification process, while the usual microcrack parallel to (00l) planes also prevail. The influence of the oxygenation process and the Ce additives on the development of this new class of microcrack pattern will be discussed. Finally, the influence of the new microcrack network on the critical current density will be presented.

Carrillo, A. E.; Puig, T.; Palau, A.; Obradors, X.; Zheng, H.; Chen, L.; Paulikas, A. P.; Veal, B. W.; Claus, H.; Materials Science Division; CSIC; Univ. Illinois at Chicago

2006-01-01T23:59:59.000Z

48

Name of Module: Next Generation Network Project 2  

E-Print Network [OSTI]

) 30 Total 270 8. Module Examination and Grading Procedures The project will be examined at the beginning of the module. 11. Enrolment Procedures To participate to the lectures/seminars/projectsName of Module: Next Generation Network ­ Project 2 CP (ECTS): 9 Short Name: MINF-KS-AV/PJ2.W12

Wichmann, Felix

49

Name of Module: Next Generation Network Project 1  

E-Print Network [OSTI]

) 30 Total 270 8. Module Examination and Grading Procedures The project will be examined at the beginning of the module. 11. Enrolment Procedures To participate to the lectures/seminars/projectsName of Module: Next Generation Network ­ Project 1 CP (ECTS): 9 Short Name: MINF-KS-AV/PJ1.W12

Wichmann, Felix

50

Generating UAV Communication Networks for Monitoring and Surveillance  

E-Print Network [OSTI]

Generating UAV Communication Networks for Monitoring and Surveillance Per-Magnus Olsson, Jonas, especially when smaller UAVs are used. Both problems can be solved to creating relay chains for surveillance different trade-offs between the number of UAVs in the chain and the chain's cost. We also show new results

Doherty, Patrick

51

USING SYNTHETIC PLAYERS TO GENERATE WORKLOADS FOR NETWORKED MULTIPLAYER GAMES  

E-Print Network [OSTI]

that generates appropriate workloads for networked multiplayer games. Based on this framework, we have developed a software infrastructure and a prototype synthetic player for the multiplayer adventure game Crossfire Video games have been projected to continue to enjoy solid growth over the coming years (PricewaterhouseCoopers

Katchabaw, Michael James

52

Worst Case Scenario for Large Distribution Networks with Distributed Generation  

E-Print Network [OSTI]

, tides, and geothermal heat, is the best choice as alternative source of energy. The interconnection and distribution networks, finally to the electric energy consumers. The life style of a nation is measured of these renewable energy sources and other forms of small generation such as combined heat and power (CHP) units

Pota, Himanshu Roy

53

Alliances and networks: the next generation  

Science Journals Connector (OSTI)

An increasing number of organisations view strategic alliances as the adequate response to rapid developments in market demands. By (temporarily) joining forces, products and services can be supplied when they are in demand. The poor success rate with respect to alliances (60â??70% of all alliances are disbanded prematurely) indicates that co-operation of this type involves a number of characteristic problems for which specific management skills are required. In developing these skills, it is vital that we learn from experience with successful and unsuccessful alliances. However, forming an alliance is so dependent on the specific circumstances that experience will not render a uniform recipe, albeit that the ingredients can be identified. Their quantity will differ in each individual situation.

Leo Wildeman

1998-01-01T23:59:59.000Z

54

Protection from ground faults in the stator winding of generators at power plants in the Siberian networks  

SciTech Connect (OSTI)

The experience of many years of experience in developing and utilization of ground fault protection in the stator winding of generators in the Siberian networks is generalized. The main method of protection is to apply a direct current or an alternating current with a frequency of 25 Hz to the primary circuits of the stator. A direct current is applied to turbo generators operating in a unit with a transformer without a resistive coupling to the external grid or to other generators. Applying a 25 Hz control current is appropriate for power generation systems with compensation of a capacitive short circuit current to ground. This method forms the basis for protection of generators operating on busbars, hydroelectric generators with a neutral grounded through an arc-suppression reactor, including in consolidated units with generators operating in parallel on a single low-voltage transformer winding.

Vainshtein, R. A., E-mail: vra@tpu.ru [Tomsk Polytechnical University (Russian Federation); Lapin, V. I. [ODU Sibiri (Integrated Dispatcher Control for Siberia), branch of JSC 'SO EES' (Russian Federation); Naumov, A. M.; Doronin, A. V. [JSC NPP 'EKRA' (Russian Federation); Yudin, S. M. [Tomsk Polytechnical University (Russian Federation)

2010-05-15T23:59:59.000Z

55

NPOESS: Next-Generation Operational Global Earth Observations  

Science Journals Connector (OSTI)

The United States is merging its two polar-orbiting operational environmental satellite programs operated by the Department of Commerce and the Department of Defense into a single system, which is called the National Polar-orbiting Operational ...

Thomas F. Lee; Craig S. Nelson; Patrick Dills; Lars Peter Riishojgaard; Andy Jones; Li Li; Steven Miller; Lawrence E. Flynn; Gary Jedlovec; William McCarty; Carl Hoffman; Gary McWilliams

2010-06-01T23:59:59.000Z

56

Artificial neural network based on SQUIDs: demonstration of network training and operation  

Science Journals Connector (OSTI)

We propose a scheme for the realization of artificial neural networks based on superconducting quantum interference devices (SQUIDs). In order to demonstrate the operation of this scheme we designed and successfully tested a small network that implements an XOR gate and is trained by means of examples. The proposed scheme can be particularly convenient as support for superconducting applications such as detectors for astrophysics, high energy experiments, medicine imaging and so on.

F Chiarello; P Carelli; M G Castellano; G Torrioli

2013-01-01T23:59:59.000Z

57

Northwest Hydro Operators Regional Forum (pbl/generation)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dry Year Tools Firstgov 2014 Northwest Hydro Operators Forum Agenda S1.1 2014 Northwest Hydro Operators Forum Intro S1.2 Owners'Dam Safety Program, FERC Perspective - Doug...

58

Fluid power network for centralized electricity generation in offshore wind farms  

Science Journals Connector (OSTI)

An innovative and completely different wind-energy conversion system is studied where a centralized electricity generation within a wind farm is proposed by means of a hydraulic network. This paper presents the dynamic interaction of two turbines when they are coupled to the same hydraulic network. Due to the stochastic nature of the wind and wake interaction effects between turbines, the operating parameters (i.e. pitch angle, rotor speed) of each turbine are different. Time domain simulations, including the main turbine dynamics and laminar transient flow in pipelines, are used to evaluate the efficiency and rotor speed stability of the hydraulic system. It is shown that a passive control of the rotor speed, as proposed in previous work for a single hydraulic turbine, has strong limitations in terms of performance for more than one turbine coupled to the same hydraulic network. It is concluded that in order to connect several turbines, a passive control strategy of the rotor speed is not sufficient and a hydraulic network with constant pressure is suggested. However, a constant pressure network requires the addition of active control at the hydraulic motors and spear valves, increasing the complexity of the initial concept. Further work needs to be done to incorporate an active control strategy and evaluate the feasibility of the constant pressure hydraulic network.

A Jarquin-Laguna

2014-01-01T23:59:59.000Z

59

Operator-Generated Particles: Characterization, Monitoring and Control  

Science Journals Connector (OSTI)

Most operator/cleanroom garment systems in service today can be ... bubble” helmet and independent air supply, all cleanroom garment systems allow some particles, body detritus...

Eric S. Burnett

1990-01-01T23:59:59.000Z

60

Dynamic Graph Generation for Large Scale Operational Train ...  

E-Print Network [OSTI]

Aug 1, 2011 ... Abstract: The aim of operational train timetabling is to find a conflict free timetable for a set of passenger and freight trains with predefined ...

Frank Fischer

2011-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Smart Grids Operation with Distributed Generation and Demand Side Management  

Science Journals Connector (OSTI)

The integration of Distributed Generation (DG) based on renewable sources in the Smart Grids (SGs) is considered a challenging task because of the problems arising for the intermittent nature of the sources (e.g....

C. Cecati; C. Citro; A. Piccolo; P. Siano

2012-01-01T23:59:59.000Z

62

Multi-point tidal prediction using artificial neural network with tide-generating forces  

E-Print Network [OSTI]

Multi-point tidal prediction using artificial neural network with tide-generating forces Hsien Available online 23 June 2006 Abstract This paper presents a neural network model of simulating tides Elsevier B.V. All rights reserved. Keywords: Neural networks; Tides; Tide-generating forces; Harmonic

63

AVESTAR Center for operational excellence of electricity generation plants  

SciTech Connect (OSTI)

To address challenges in attaining operational excellence for clean energy plants, the U.S.Department of Energy’s National Energy Technology Laboratory has launched a world-class facility for Advanced Virtual Energy Simulation Training and Research (AVESTAR™). The AVESTAR Center brings together state-of-the-art, real time,high-fidelity dynamic simulators with operator training systems and 3D virtual immersive training systems into an integrated energy plant and control room environment.

Zitney, S.

2012-01-01T23:59:59.000Z

64

Property:EIA/861/OperatesGeneratingPlant | Open Energy Information  

Open Energy Info (EERE)

OperatesGeneratingPlant OperatesGeneratingPlant Jump to: navigation, search This is a property of type Boolean. Description: Operates Generating Plant Entity operates power generating plants (Y or N) [1] References ↑ EIA Form EIA-861 Final Data File for 2008 - F861 File Layout-2008.doc Pages using the property "EIA/861/OperatesGeneratingPlant" Showing 25 pages using this property. (previous 25) (next 25) A A & N Electric Coop (Virginia) + true + AEP Generating Company + true + AES Eastern Energy LP + true + AGC Division of APG Inc + true + Akiachak Native Community Electric Co + true + Alabama Municipal Elec Authority + true + Alabama Power Co + true + Alaska Electric & Energy Coop + true + Alaska Electric Light&Power Co + true + Alaska Energy Authority + true +

65

Deploying QoS for Cisco IP and Next Generation Networks: The Definitive Guide  

Science Journals Connector (OSTI)

Deploying QoS for IP Next Generation Networks: The Definitive Guide provides network architects and planners with insight into the various aspects that drive QoS deployment for the various network types. It serves as a single source of reference ... Keywords: Networking

Vinod Joseph; Brett Chapman

2009-04-01T23:59:59.000Z

66

Optimal Allocation of Distributed Generators in a Distribution Network Using Adaptive Multi-Objective Particle Swarm Optimization  

Science Journals Connector (OSTI)

This study presents the optimal allocation of distributed generators (DGs) in distribution network based on...

Shan Cheng; Min-You Chen; Peter J. Fleming…

2012-01-01T23:59:59.000Z

67

Methodology The electricity generation and distribution network in the Western United States is  

E-Print Network [OSTI]

Methodology The electricity generation and distribution network in the Western United States is comprised of power plants, electric utilities, electrical transformers, transmission and distribution infrastructure, etc. We conceptualize the system as a transportation network with resources (electricity

Hall, Sharon J.

68

Performing a scatterv operation on a hierarchical tree network optimized for collective operations  

DOE Patents [OSTI]

Performing a scatterv operation on a hierarchical tree network optimized for collective operations including receiving, by the scatterv module installed on the node, from a nearest neighbor parent above the node a chunk of data having at least a portion of data for the node; maintaining, by the scatterv module installed on the node, the portion of the data for the node; determining, by the scatterv module installed on the node, whether any portions of the data are for a particular nearest neighbor child below the node or one or more other nodes below the particular nearest neighbor child; and sending, by the scatterv module installed on the node, those portions of data to the nearest neighbor child if any portions of the data are for a particular nearest neighbor child below the node or one or more other nodes below the particular nearest neighbor child.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2013-10-22T23:59:59.000Z

69

13 - Generation IV reactor designs, operation and fuel cycle  

Science Journals Connector (OSTI)

Abstract: This chapter looks at Generation IV nuclear reactors, such as the very high-temperature reactor (VHTR), the supercritical water reactor (SCWR), the molten salt reactor (MSR), the sodium-cooled fast reactor (SFR), the lead-cooled fast reactor (LFR) and the gas-cooled fast reactor (GFR). Reactor designs and fuel cycles are also described.

N. Cerullo; G. Lomonaco

2012-01-01T23:59:59.000Z

70

SUSTAINABLE RESERVOIR OPERATION: CAN WE GENERATE HYDROPOWER AND PRESERVE ECOSYSTEM VALUES?y  

E-Print Network [OSTI]

SUSTAINABLE RESERVOIR OPERATION: CAN WE GENERATE HYDROPOWER AND PRESERVE ECOSYSTEM VALUES hydropower are typically operated with the goal of maximizing energy revenue, while meeting other legal water approaches. The first approach seeks flow regimes that maximize hydropower generation, while satisfying legal

Jager, Henriette I.

71

Voltage Control of Distribution Networks with Distributed Generation using Reactive Power  

E-Print Network [OSTI]

Voltage Control of Distribution Networks with Distributed Generation using Reactive Power. Nasiruzzaman Abstract--Voltage profile of distribution networks with dis- tributed generation are affected significantly due to the integra- tion of distributed generation (DG) on it. This paper presents a way

Pota, Himanshu Roy

72

U-130: JBoss Operations Network LDAP Authentication Bug Lets Remote Users  

Broader source: Energy.gov (indexed) [DOE]

0: JBoss Operations Network LDAP Authentication Bug Lets Remote 0: JBoss Operations Network LDAP Authentication Bug Lets Remote Users Bypass Authentication U-130: JBoss Operations Network LDAP Authentication Bug Lets Remote Users Bypass Authentication March 21, 2012 - 7:00am Addthis PROBLEM: JBoss Operations Network LDAP Authentication Bug Lets Remote Users Bypass Authentication PLATFORM: JBoss Operations Network 2.x ABSTRACT: A vulnerability was reported in JBoss Operations Network. A remote user can login with an arbitrary password in certain cases. reference LINKS: SecurityTracker Alert ID: 1026826 Secunia Advisory SA48471 CVE-2012-1100 IMPACT ASSESSMENT: Medium Discussion: The vulnerability is caused due to an error within the Lightweight Directory Access Protocol (LDAP) authentication when handling invalid bind account credentials, which can be exploited to log-in to LDAP-based

73

THE NEXT GENERATION SAFEGUARDS PROFESSIONAL NETWORK: PROGRESS AND NEXT STEPS  

SciTech Connect (OSTI)

President Obama has repeatedly stated that the United States must ensure that the international safeguards regime, as embodied by the International Atomic Energy Agency (IAEA), has 'the authority, information, people, and technology it needs to do its job.' The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) works to implement the President's vision through the Next Generation Safeguards Initiative (NGSI), a program to revitalize the U.S. DOE national laboratories safeguards technology and human capital base so that the United States can more effectively support the IAEA and ensure that it meets current and emerging challenges to the international safeguards system. In 2009, in response to the human capital development goals of NGSI, young safeguards professionals within the Global Nuclear Security Technology Division at Oak Ridge National Laboratory launched the Next Generation Safeguards Professional Network (NGSPN). The purpose of this initiative is to establish working relationships and to foster collaboration and communication among the next generation of safeguards leaders. The NGSPN is an organization for, and of, young professionals pursuing careers in nuclear safeguards and nonproliferation - as well as mid-career professionals new to the field - whether working within the U.S. DOE national laboratory complex, U.S. government agencies, academia, or industry or at the IAEA. The NGSPN is actively supported by the NNSA, boasts more than 70 members, maintains a website and newsletter, and has held two national meetings as well as an NGSPN session and panel at the July 2010 Institute of Nuclear Material Management Annual Meeting. This paper discusses the network; its significance, goals and objectives; developments and progress to date; and future plans.

Zhernosek, Alena V [ORNL] [ORNL; Lynch, Patrick D [ORNL] [ORNL; Scholz, Melissa A [ORNL] [ORNL

2011-01-01T23:59:59.000Z

74

Deriving traffic demands for operational IP networks: methodology and experience  

Science Journals Connector (OSTI)

Engineering a large IP backbone network without an accurate, network-wide view of the traffic demands is challenging. Shifts in user behavior, changes in routing policies, and failures of network elements can result in significant (and sudden) fluctuations ...

Anja Feldmann; Albert Greenberg; Carsten Lund; Nick Reingold; Jennifer Rexford; Fred True

2000-08-01T23:59:59.000Z

75

Six-phase induction machine operating as a stand-alone self-excited induction generator  

E-Print Network [OSTI]

Six-phase induction machine operating as a stand- alone self-excited induction generator Kamel-excited induction generator and supplying various loads under different conditions are presented. Firstly, the dynamic model of the power generation system is developed considering the magnetizing inductance

Brest, Université de

76

Energy-Efficient Next-Generation Networks (E2 Pulak Chowdhury  

E-Print Network [OSTI]

Energy-Efficient Next-Generation Networks (E2 NGN) By Pulak Chowdhury B.S. (Bangladesh University Prototype . . . . . . . . . . . . . . . . 57 3.3.1 Resources Needed

California at Davis, University of

77

DESIGN AND IMPLEMENTATION OF A SINGLE SYSTEM IMAGE OPERATING SYSTEM FOR AD HOC NETWORKS  

E-Print Network [OSTI]

DESIGN AND IMPLEMENTATION OF A SINGLE SYSTEM IMAGE OPERATING SYSTEM FOR AD HOC NETWORKS Hongzhou and implementation of a distributed operating system for ad hoc networks. Our system simplifies the programming of ad longevity by effectively distributing energy consumption and avoiding hotspots. 1 Introduction Ad hoc

Sirer, Emin Gun

78

CAD-HOC: A CAD Like Tool For Generating Mobility Benchmarks In Ad-Hoc Networks  

E-Print Network [OSTI]

CAD-HOC: A CAD Like Tool For Generating Mobility Benchmarks In Ad-Hoc Networks Subodh Shah , Edwin of using unrealistic mobility scenarios for simulation of ad-hoc routing protocols. We present CAD-HOC, a cousin tool to Network Simulator (ns), which allows ad-hoc networking experimentation to be performed

Helal, Abdelsalam

79

Deriving traffic demands for operational IP networks: methodology and experience  

Science Journals Connector (OSTI)

Engineering a large IP backbone network without an accurate network-wide view of the traffic demands is challenging. Shifts in user behavior, changes in routing policies, and failures of network elements can result in significant (and sudden) fluctuations ... Keywords: Internet, measurement, routing, traffic engineering

Anja Feldmann; Albert Greenberg; Carsten Lund; Nick Reingold; Jennifer Rexford; Fred True

2001-06-01T23:59:59.000Z

80

How Run-of-River Operation Affects Hydropower Generation Henriette I. Jager Mark S. Bevelhimer  

E-Print Network [OSTI]

How Run-of-River Operation Affects Hydropower Generation and Value Henriette I. Jager Ã? Mark S) are mandated to protect aquatic biota, (2) decrease hydropower generation per unit flow, and (3) decrease energy revenue. We tested these three assump- tions by reviewing hydropower projects with license

Jager, Henriette I.

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Loss Minimizing Operation of Doubly Fed Induction Generator Based Wind Generation Systems  

E-Print Network [OSTI]

Grid Code Technical Regulations TF 3.2.6 [2]. Doubly fed induction generator (DFIG) based Wind of its advantages such as high energy controllability, reduced power converter rating, etc., DFIG has in order to derive the optimal rotor reactive current. However, it only analyzed the condition when DFIGs

Hu, Weihao

82

Revenue Recovery for Operational SONET/SDH Networks  

Science Journals Connector (OSTI)

Shrinking capital expenditure budgets are forcing telecom service providers to explore network management/optimization tools that extract greater utilization from existing transport...

Ng, Wee Teck; Risbood, Pankaj; Acharya, Swarup; Lafontaine, Edward

83

A fast solver for combined emission/generation allocation using a Hopfield neural network  

Science Journals Connector (OSTI)

The combined economic/emission dispatch (CEED) problem is obtained by considering both the economy and the emission objectives with required constraints. Many optimisation techniques are slow for such complex optimisation tasks and are not suitable for online use. This paper presents an optimisation algorithm for solving constrained CEED, through the application of a flexible Hopfield neural network (HNN). The constrained CEED must satisfy the system load demand and practical operation constraints of generators. The feasibility of the proposed HNN using to solve CEED is demonstrated using a three-unit test system and it is compared with the other methods in terms of solution quality and computation efficiency. The simulation results showed that the proposed HNN method was indeed capable of obtaining higher-quality solutions efficiently in CEED problems with a much shorter computation time compared with other methods.

Farid Benhamida; Belhachem Rachid; Souag Slimane; Ramdani Youcef

2013-01-01T23:59:59.000Z

84

Aging of nuclear station diesel generators: Evaluation of operating and expert experience: Workshop  

SciTech Connect (OSTI)

Pacific Northwest Laboratory (PNL) evaluated operational and expert experience pertaining to the aging degradation of diesel generators in nuclear service. The research, sponsored by the US Nuclear Regulatory Commission (NRC), identified and characterized the contribution of aging to emergency diesel generator failures. This report, Volume II, reports the results of an industry-wide workshop held on May 28 and 29, 1986, to discuss the technical issues associated with aging of nuclear service emergency diesel generators. The technical issues discussed most extensively were: man/machine interfaces, component interfaces, thermal gradients of startup and cooldown and the need for an accurate industry database for trend analysis of the diesel generator system.

Hoopingarner, K.R.; Vause, J.W.

1987-08-01T23:59:59.000Z

85

A Neural Network Generating Force Command for Motor Control of a Robotic Arm  

E-Print Network [OSTI]

A Neural Network Generating Force Command for Motor Control of a Robotic Arm Antoine de Rengerv is generated and controlled still represents unanswered questions [7]. In [3], an arm controller that learns attractors in the motor space that are used to generate a speed command to control the arm

Paris-Sud XI, Université de

86

Distributed clock generator for synchronous SoC using ADPLL network  

E-Print Network [OSTI]

Distributed clock generator for synchronous SoC using ADPLL network E. Zianbetov1 , D. Galayko1 , F, as well as suffering from reduced communication speed. Distributed clock generators are based on the local. The latter is a good candidate for on-chip distributed clock generation, because of better compatibility

Paris-Sud XI, Université de

87

Reactive power management of distribution networks with wind generation for improving voltage stability  

E-Print Network [OSTI]

Reactive power management of distribution networks with wind generation for improving voltage February 2013 Available online Keywords: Composite load Distributed generation D-STATCOM Q with distributed wind generation. Firstly, the impact of high wind penetration on the static voltage stability

Pota, Himanshu Roy

88

Next Generation Networking | U.S. DOE Office of Science (SC)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Next Next Generation Networking Advanced Scientific Computing Research (ASCR) ASCR Home About Research Applied Mathematics Computer Science Next Generation Networking 2012 Scientific Collaborations at Extreme-Scale Scientific Discovery through Advanced Computing (SciDAC) Computational Science Graduate Fellowship (CSGF) ASCR SBIR-STTR Facilities Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301) 903-4846 E: sc.ascr@science.doe.gov More Information » Research Next Generation Networking Print Text Size: A A A

89

ENERGY SAVING OPPORTUNITIES IN NEXT-GENERATION NETWORKS  

Science Journals Connector (OSTI)

Abstract (40-Word Limit): Network energy consumption involves aspects ranging from architecture and technology choices down to pure equipment design issues. Different opportunities for...

Skubic, Björn

90

Difference of operation mechanisms in SWNTs network FETs studied via scanning gate microscopy  

SciTech Connect (OSTI)

Field effect transistors (FETs) whose channel is composed of a network of single wall carbon nanotubes (SWNTs) have been studied to investigate the mechanism of the device operation via scanning gate microscopy (SGM) at room temperature. We observed different SGM response in networks of SWNTs either synthesized by CoMoCAT process or semiconducting enriched by density gradient ultracentrifuge process. In the former case, SGM response was observed at specific inter-tube junctions suggesting a Schottky junction formed with semiconducting and metallic SWNTs in the network. In contrast, multiple concentric rings in the SGM response are observed within the tubes in a network of the latter SWNTs suggesting a possibility of quantum mechanical transport at room-temperature. Different type of SGM responses are confirmed in the two kinds of SWNTs networks, nevertheless such active positions would likely have an important role in the FET operation mechanism in each network.

Wei, Xiaojun; Matsunaga, Masahiro; Yahagi, Tatsurou; Maeda, Kenji; Ochiai, Yuichi; Aoki, Nobuyuki [Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522 (Japan); Bird, Jonathan P. [Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260-1920 (United States); Ishibashi, Koji [Advanced Device Laboratory, RIKEN, Wako, Saitama 351-0198 (Japan)

2013-12-04T23:59:59.000Z

91

National Lab Helping to Train Operators for Next Generation of Power Plants  

Broader source: Energy.gov (indexed) [DOE]

National Lab Helping to Train Operators for Next Generation of National Lab Helping to Train Operators for Next Generation of Power Plants National Lab Helping to Train Operators for Next Generation of Power Plants January 25, 2013 - 11:10am Addthis AVESTAR provides high-quality, hands-on, simulator-based workforce training delivered by an experienced team of power industry training professionals for West Virginia students. | Photo courtesy of the Office of Fossil Energy. AVESTAR provides high-quality, hands-on, simulator-based workforce training delivered by an experienced team of power industry training professionals for West Virginia students. | Photo courtesy of the Office of Fossil Energy. Gayland Barksdale Technical Writer, Office of Fossil Energy What Does AVESTAR Provide? Advanced dynamic simulation, control and virtual plant technologies

92

National Lab Helping to Train Operators for Next Generation of Power Plants  

Broader source: Energy.gov (indexed) [DOE]

Lab Helping to Train Operators for Next Generation of Lab Helping to Train Operators for Next Generation of Power Plants National Lab Helping to Train Operators for Next Generation of Power Plants January 25, 2013 - 11:10am Addthis AVESTAR provides high-quality, hands-on, simulator-based workforce training delivered by an experienced team of power industry training professionals for West Virginia students. | Photo courtesy of the Office of Fossil Energy. AVESTAR provides high-quality, hands-on, simulator-based workforce training delivered by an experienced team of power industry training professionals for West Virginia students. | Photo courtesy of the Office of Fossil Energy. Gayland Barksdale Technical Writer, Office of Fossil Energy What Does AVESTAR Provide? Advanced dynamic simulation, control and virtual plant technologies

93

Network Operation and Maintenance System of Meticulous Management Based on Data Analysis  

Science Journals Connector (OSTI)

Due to rapid development of the domestic communication industry, energy consumption on network operation and maintenance has become one of the ... s crucial for us to develop an intelligent system for data analys...

Qi-Te Wang; Ke-Bin Jia; Ye Yuan; Yu-Xin Song

2014-01-01T23:59:59.000Z

94

Aging of nuclear station diesel generators: Evaluation of operating and expert experience: Phase 1, Study  

SciTech Connect (OSTI)

Pacific Northwest Laboratory evaluated operational and expert experience pertaining to the aging degradation of diesel generators in nuclear service. The research, sponsored by the US Nuclear Regulatory Commission (NRC), identified and characterized the contribution of aging to emergency diesel generator failures. This report, Volume I, reviews diesel-generator experience to identify the systems and components most subject to aging degradation and isolates the major causes of failure that may affect future operational readiness. Evaluations show that as plants age, the percent of aging-related failures increases and failure modes change. A compilation is presented of recommended corrective actions for the failures identified. This study also includes a review of current, relevant industry programs, research, and standards. Volume II reports the results of an industry-wide workshop held on May 28 and 29, 1986 to discuss the technical issues associated with aging of nuclear service emergency diesel generators.

Hoopingarner, K.R.; Vause, J.W.; Dingee, D.A.; Nesbitt, J.F.

1987-08-01T23:59:59.000Z

95

SPARTA: Stable and Efficient Spectrum Access in Next Generation Dynamic Spectrum Networks  

E-Print Network [OSTI]

and development require easy and reliable access to radio spectrum. However, exist- ing regulations allocateSPARTA: Stable and Efficient Spectrum Access in Next Generation Dynamic Spectrum Networks Lili Cao.S.A Abstract--Future wireless infrastructure networks will dynam- ically access spectrum for maximum

Almeroth, Kevin C.

96

Impact of Distributed Generation and Series Compensation on Distribution Network  

E-Print Network [OSTI]

are investigated. A doubly-fed induction generator (DFIG)-based DG unit and a series capacitor (SC) and a thyristor DFIG units. The converter of the DFIG is modeled as an unbalanced harmonic-generating source

Pota, Himanshu Roy

97

Cognition as a Tool for Green Next Generation Networks  

Science Journals Connector (OSTI)

The chapter discusses issues related to the implementation of the different steps of the cognitive cycle, especially focusing on reasoning, and applies this to energy saving for green networking. The application ...

Fabrizio Granelli; Oliver Holland…

2014-01-01T23:59:59.000Z

98

Generative models of rich clubs in Hebbian neuronal networks and large-scale human brain networks  

Science Journals Connector (OSTI)

...Theme Issue Complex network theory and the brain compiled and edited by David Papo, Javier...neuronal networks and large-scale human brain networks Petra E. Vertes 1 Aaron Alexander-Bloch...Theme Issue Complex network theory and the brain . Rich clubs arise when nodes that are...

2014-01-01T23:59:59.000Z

99

Tool-Assisted Unit-Test Generation and Selection Based on Operational Abstractions  

E-Print Network [OSTI]

Tool-Assisted Unit-Test Generation and Selection Based on Operational Abstractions Tao Xie1 of Washington, Seattle, WA 98105 Abstract. Unit testing, a common step in software development, presents a chal- lenge. When produced manually, unit test suites are often insufficient to identify defects. The main

Xie, Tao

100

High-Efficiency Operation of High-Frequency DCDC Conversion for Next-Generation Microprocessors  

E-Print Network [OSTI]

High-Efficiency Operation of High-Frequency DCDC Conversion for Next-Generation Microprocessors current slew rate during load transients: all leading to faster energy transfer and better transient ZVS for majority-carrier power devices [3]. In this paper, the design of a ZVS quasi-square-wave (ZVS

Ng, Wai Tung

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Network Congestion Control of Airport Surface Operations Harshad Khadilkar  

E-Print Network [OSTI]

parameters for Boston Logan International Airport are es- timated using empirical data from a surface with simulations of traffic on a network model of Boston Logan International Airport. Nomenclature ASDE-X Airport Surface Detection Equipment, Model X BOS Boston Logan International Airport C Cost function for control

Gummadi, Ramakrishna

102

Current networks require ad-hoc operating procedures by expert administrators to handle  

E-Print Network [OSTI]

1 Abstract Current networks require ad-hoc operating procedures by expert administrators to handle and operational procedures; and coordinate these changes with those caused by built-in element procedures ­ handle implemented in two complementary versions and is now being applied to automate several configuration

Yemini, Yechiam

103

Regional Distribution of the Locomotor Pattern-Generating Network in the Neonatal Rat Spinal Cord  

E-Print Network [OSTI]

Regional Distribution of the Locomotor Pattern-Generating Network in the Neonatal Rat Spinal Cord K/NMA, and was evidence of a distributed organization of unit generators inmonitored via hindlimb flexor (peroneal, Winnipeg, Manitoba R3E 0W3, Canada Cowley, K. C. and B. J. Schmidt. Regional distribution of the rhythmic

Manitoba, University of

104

A study of small-scale energy networks of the Japanese Syowa Base in Antarctica by distributed engine generators  

Science Journals Connector (OSTI)

Abstract Fuel traffic to the Syowa Base of the South Pole is increasing from Japan, with growing research and observation occurring every year. Limits to fuel traffic and the spread of green energy utilization are topics of interest for Syowa Base; this research considers the construction of a Syowa Base small-scale energy network (Syowa Base Micro-Grid: SBMG) for the purposes of reducing fuel consumption and increasing green energy utilization. The number of engine generators, the operation plan for the battery’s charge and discharge, and the introduction of an exhaust heat pump provided a means by which the load factor of the engine generator could be maintained high value from the fluctuations of green energy. This might be accomplished by modifying the main power supply of Syowa Base into a distributed power supply system rather than a conventional central power supply system. The relationship between the amount of green energy (photovoltaics and wind power generation) connected to the proposed power supply distribution and the amount of fuel consumed by the engine generators and backup boiler was clarified. Moreover, the outside temperatures, insulation levels, and wind velocity at the Syowa Base change seasonally, resulting in large changes in the SBMG operation method. Therefore, differences in the operation methods between the proposed power supply distribution system and the conventional central power supply were assessed during the summer (January), winter (July), and mid-season (October), and the resulting differences in fuel consumption were clarified.

Shin’ya Obara; Yuta morizane; Jorge Morel

2013-01-01T23:59:59.000Z

105

Body Area Networks for Ambulant Patient Monitoring Over Next Generation Public Wireless Networks  

E-Print Network [OSTI]

on a Body Area Network (BAN) and an m-health service platform utilizing UMTS and GPRS networks) for healthcare and an m-health service platform. The BAN incorporates a set of body-worn devices and handles

Widya, Ing

106

Optimal operation of hydrothermal systems with Hydrological Scenario Generation through Bootstrap and Periodic Autoregressive Models  

Science Journals Connector (OSTI)

In electrical power systems with strong hydro generation, the use of adequate techniques to generate synthetic hydrological scenarios is extremely important for the evaluation of the ways the system behaves in order to meet the forecast energy demand. This paper proposes a new model to generate natural inflow energy scenarios in the long-term operation planning of large-sized hydrothermal systems. This model is based on the Periodic Autoregressive Model, PAR (p), where the identification of the p orders is based on the significance of the Partial Autocorrelation Function (PACF) estimated via Bootstrap, an intensive computational technique. The scenarios generated through this new technique were applied to the operation planning of the Brazilian Electrical System (BES), using the previously developed methodology of Stochastic Dynamic Programming based on Convex Hull algorithm (SDP-CHull). The results show that identification via Bootstrap is considerably more parsimonious, leading to the identification of lower orders models in most cases which retains the statistical characteristics of the original series. Additionally it presents a closer total mean operation cost when compared to the cost obtained via historic series.

Reinaldo Castro Souza; André Lu?´s Marques Marcato; Bruno Henriques Dias; Fernando Luiz Cyrino Oliveira

2012-01-01T23:59:59.000Z

107

The Design, Operation, and Performance of the Round Hill Electrostatic Generator  

Science Journals Connector (OSTI)

The design, technique of operation, and performance of the Round Hill electrostatic generator are presented in some detail. The problems of operating wide paper belts, of eliminating vibration, and of controlling humidity are discussed. The original belt charging system, with the belts operated at saturation charge density, is described and its range of usefulness is indicated. A consideration of the problems of voltage control and voltage steadiness at reduced charging currents leads to two modified designs of the belt charging system. The measurement of voltage by means of the generating voltmeter is discussed with special emphasis on the precautions necessary to eliminate or to correct for sources of systematic error. Under the conditions realizable with the Round Hill generator the probable error in voltage measurements is less than one percent on a relative scale and about two percent on an absolute scale. The magnitude of voltage fluctuations is less than 0.1 percent. The generator performance data for the positive and negative terminals are given in graphical form. The maximum charging current is 2.1 ma and is practically independent of voltage. The highest voltage obtained consistently without sparking is 2.4 megavolts positive and 2.7 megavolts negative, giving 5.1 megavolts between the terminals. At this voltage there is 1.1 ma of current available for application to an accelerating tube.

L. C. van Atta; D. L. Northrup; C. M. van Atta; R. J. van de Graaff

1936-05-15T23:59:59.000Z

108

Generating Coherent Patterns of Activity from Chaotic Neural Networks  

E-Print Network [OSTI]

that can be switched by control inputs, and motor patterns matching human motion capture data. Our results may be a more rapid and powerful modulator of network activity than generally appreciated. Researchers in the machine learning and computer vision communities have developed powerful methods

Columbia University

109

Balancing Operation for the Optimization of Hydronic Networks  

E-Print Network [OSTI]

that the work is made and well made. ESL-IC-10/05-23 3 THE SIMULATOR Simulation model The development of the simulator for the study of hydronic networks as well as the pre-processing for hown in a previous study [4]. It is developed under Matlab/Simulink...] q Mass flow rate of water [kg/s] p ? Efficiency of the pump [-] m ? Efficiency of the engine [-] c P Pump consumptions [W] w C Average costs of electrical kWh [€/kWh] t Time of pump functioning [h] cp C Costs of pump...

Couillaud, N.; Riederer, P.; Jandon, M.; Diab, Y.

2005-01-01T23:59:59.000Z

110

Operational water consumption and withdrawal factors for electricity generating technologies: a review of existing literature  

Open Energy Info (EERE)

content has been downloaded from IOPscience. Please scroll down to see the full text. content has been downloaded from IOPscience. Please scroll down to see the full text. Download details: IP Address: 192.174.37.50 This content was downloaded on 04/11/2013 at 23:01 Please note that terms and conditions apply. Operational water consumption and withdrawal factors for electricity generating technologies: a review of existing literature View the table of contents for this issue, or go to the journal homepage for more 2012 Environ. Res. Lett. 7 045802 (http://iopscience.iop.org/1748-9326/7/4/045802) Home Search Collections Journals About Contact us My IOPscience IOP PUBLISHING ENVIRONMENTAL RESEARCH LETTERS Environ. Res. Lett. 7 (2012) 045802 (10pp) doi:10.1088/1748-9326/7/4/045802 Operational water consumption and withdrawal factors for electricity generating technologies:

111

Operating experience feedback report -- turbine-generator overspeed protection systems: Commercial power reactors. Volume 11  

SciTech Connect (OSTI)

This report presents the results of the US Nuclear Regulatory Commission`s Office for Analysis and Evaluation of Operational Data (AEOD) review of operating experience of main turbine-generator overspeed and overspeed protection systems. It includes an indepth examination of the turbine overspeed event which occurred on November 9, 1991, at the Salem Unit 2 Nuclear Power Plant. It also provides information concerning actions taken by other utilities and the turbine manufacturers as a result of the Salem overspeed event. AEOD`s study reviewed operating procedures and plant practices. It noted differences between turbine manufacturer designs and recommendations for operations, maintenance, and testing, and also identified significant variations in the manner that individual plants maintain and test their turbine overspeed protection systems. AEOD`s study provides insight into the shortcomings in the design, operation, maintenance, testing, and human factors associated with turbine overspeed protection systems. Operating experience indicates that the frequency of turbine overspeed events is higher than previously thought and that the bases for demonstrating compliance with NRC`s General Design Criterion (GDC) 4, Environmental and dynamic effects design bases, may be nonconservative with respect to the assumed frequency.

Ornstein, H.L.

1995-04-01T23:59:59.000Z

112

Sustainable Reservoir Operation: Can we Generate Hydropower and Preserve Ecosystem Values?  

SciTech Connect (OSTI)

Hydroelectric power provides a cheap source of electricity with few carbon emissions. Yet, reservoirs are not operated sustainably, which we define as meeting societal needs for water and power while protecting long-term health of the river ecosystem. Reservoirs that generate hydropower are typically operated with the goal of maximizing energy revenue, while meeting other legal water requirements. Reservoir optimization schemes used in practice do not seek flow regimes that maximize aquatic ecosystem health. Here, we review optimization studies that considered environmental goals in one of three approaches. The first approach seeks flow regimes that maximize hydropower generations while satisfying legal requirements, including environmental (or minimum) flows. Solutions from this approach are often used in practice to operate hydropower projects. In the second approach, flow releases from a dam are timed to meet water quality constraints on dissolved oxygen (DO), temperature and nutrients. In the third approach, flow releases are timed to improve the health of fish populations. We conclude by suggesting three steps for bringing multi-objective reservoir operation closer to the goal of ecological sustainability: (1) conduct research to identify which features of flow variation are essential for river health and to quantify these relationships, (2) develop valuation methods to assess the total value of river health and (3) develop optimal control softwares that combine water balance modeling with models that predict ecosystem responses to flow.

Jager, Yetta [ORNL; Smith, Brennan T [ORNL

2008-01-01T23:59:59.000Z

113

OPTIMAL DISTRIBUTED POWER GENERATION UNDER NETWORK LOAD CONSTRAINTS,  

E-Print Network [OSTI]

-producers. Decentralized Power Generation (DPG) refers to an electric power source such as solar, wind or combined heat (the approach used in the traditional electric power paradigm), DPG systems employ numerous, but small¨EL BLOEMHOF, JOOST BOSMAN§, DAAN CROMMELIN¶, JASON FRANK , AND GUANGYUAN YANG Abstract. In electrical power

Frank, Jason

114

Modelling and optimisation for design of hydrogen networks for multi-period operation  

Science Journals Connector (OSTI)

Hydrogen management is a problem of increasing importance: hydrogen consumption of refineries is rising sharply with additional capacities of hydrocracking and hydrotreating units in order to comply with cleaner fuel specifications. Product Specifications for transportation fuels are becoming increasingly stringent to ensure production of environmentally more benign fuels. Hydrogen management techniques currently do not account for varying operating conditions of hydrogen consuming processes and assume constant operating conditions. A novel approach is developed for the design of flexible hydrogen networks that can remain optimally operable under multiple periods of operation. The proposed methodology for multi-period design of hydrogen networks can take into account pressure differences, maximum capacity of existing equipment, and optimal placement of new equipment such as compressors.

Muhammad Imran Ahmad; Nan Zhang; Megan Jobson

2010-01-01T23:59:59.000Z

115

Use of neural networks in the operation of nuclear power plants  

SciTech Connect (OSTI)

Application of neural networks to the operation of nuclear power plants is being investigated under a US Department of Energy sponsored program at the University of Tennessee. Projects include the feasibility of using neural networks for the following tasks: (a) diagnosing specific abnormal conditions, (b) detection of the change of mode of operation, (c) signal validation, (d) monitoring of check valves, (e) modeling of the plant thermodynamics, (f) emulation of core reload calculations, (g) analysis of temporal sequences in NRC's licensee event report,'' (h) monitoring of plant parameters, and (i) analysis of plant vibrations. Each of these projects and its status are described briefly in this article. the objective of each of these projects is to enhance the safety and performance of nuclear plants through the use of neural networks. 6 refs.

Uhrig, R.E. (Tennessee Univ., Knoxville, TN (USA) Oak Ridge National Lab., TN (USA))

1990-01-01T23:59:59.000Z

116

Applications of neural networks to monitoring and decision making in the operation of nuclear power plants  

SciTech Connect (OSTI)

Application of neural networks to monitoring and decision making in the operation of nuclear power plants is being investigated under a US Department of Energy sponsored program at the University of Tennessee. Projects include the feasibility of using neural networks for the following tasks: (1) diagnosing specific abnormal conditions or problems in nuclear power plants, (2) detection of the change of mode of operation of the plant, (3) validating signals coming from detectors, (4) review of noise'' data from TVA's Sequoyah Nuclear Power Plant, and (5) examination of the NRC's database of Letter Event Reports'' for correlation of sequences of events in the reported incidents. Each of these projects and its status are described briefly in this paper. This broad based program has as its objective the definition of the state-of-the-art in using neural networks to enhance the performance of commercial nuclear power plants.

Uhrig, R.E. (Tennessee Univ., Knoxville, TN (United States) Oak Ridge National Lab., TN (United States))

1990-01-01T23:59:59.000Z

117

Fraud Detection for Voice over IP Services on Next-Generation Networks  

E-Print Network [OSTI]

Fraud Detection for Voice over IP Services on Next-Generation Networks Igor Ruiz-Agundez, Yoseba K the security requirements of NGN and introduce a fraud management system based on misuse detection for Voice over IP services. Specifically, we address a fraud detection framework consisting of a rule engine

Boyer, Edmond

118

Evidence Absorption | Experiments on Di erent Classes of Randomly Generated Belief Networks  

E-Print Network [OSTI]

Evidence Absorption | Experiments on Di#11;erent Classes of Randomly Generated Belief Networks to incorporate the method of evidence absorption into Pearl's algorithms for probabilistic inference of evidence absorption into Pearl's algorithms for exact probabilistic inference to save on the computational

Utrecht, Universiteit

119

GeM-REM: Generative Model-driven Resource efficient ECG Monitoring in Body Sensor Networks  

E-Print Network [OSTI]

GeM-REM: Generative Model-driven Resource efficient ECG Monitoring in Body Sensor Networks Sidharth electrocardiogram (ECG) monitoring. In such systems, sampling the ECG at clinically recommended rates (250 Hz, there is a need for reducing the energy consumption and data size at the sensor, while maintaining the ECG quality

Poovendran, Radha

120

Turbine set with a generator feeding a network of constant frequency  

SciTech Connect (OSTI)

In a turbine set with an axial flow which is traversed by water and which is coupled to a generator feeding a network of constant frequency, the flow turbine is a propeller turbine with nonadjustable blades. The stator winding of the generator is connected to the network by means of a frequency-controllable converter, in particular a direct converter. The speed of rotation of the turbine set is controllable continuously according to the power to be delivered. In the case of an asynchronous design of the generator, it is advisable to provide the stator with a waterproof jacket on the inside and to flange it into the turbine tube, since the rotor with its cage winding is swept by water.

Spirk, F.

1983-01-11T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Eco-operation of co-generation systems optimized by environmental load value  

SciTech Connect (OSTI)

In this paper the authors introduce a life cycle assessment scheme with the aid of the environmental load value (ELV) as a numerical measure to estimate the quantitative load of any industrial activity on the environment. The value is calculated from the total summation of the respective environmental load indexes through the life cycle activity from cradle to grave. An algorithm and a software using a combined simplex and branch-bound technique are accomplished to give the numerical ELV and its optimization. This ELV scheme is applied to co-generation energy systems consisting of gas turbines, waste-heat boilers, auxiliary boilers, steam turbines, electricity operated turbo refrigerators, steam absorption refrigerators and heat exchangers, which can be easily set up on the computer display in an ICON and Q and A style, including various kinds of parameters. The two kinds of environmental loads respecting the fossil fuel depletion and the CO{sub 2} global warming due to electricity generation from power stations in Japan are chosen as the ELV criterion. The ELV optimization is calculated corresponding to the hourly energy demands for electricity, air cooling, air heating, and hot water from a district consisting eight office buildings and four hotels. As a result, the ELV scheme constructed here is found to be an attractive and powerful tool to quantitatively estimate the LCA environmental loads of any industrial activity like co-generation energy systems and to propose the eco-operation of the industrial activity of interest. The cost estimation can be made as well.

Kato, Seizo; Nomura, Nobukazu; Maruyama, Naoki

1998-07-01T23:59:59.000Z

122

Optimal allocation of stochastically dependent renewable energy based distributed generators in unbalanced distribution networks  

Science Journals Connector (OSTI)

Abstract This paper proposes an algorithm for modeling stochastically dependent renewable energy based distributed generators for the purpose of proper planning of unbalanced distribution networks. The proposed algorithm integrate the diagonal band Copula and sequential Monte Carlo method in order to accurately consider the multivariate stochastic dependence between wind power, photovoltaic power and the system demand. Secondly, an efficient algorithm based on modification of the traditional Big Bang-Big crunch method is proposed for optimal placement of renewable energy based distributed generators in the presence of dispatchable distributed generation. The proposed optimization algorithm aims to minimize the energy loss in unbalanced distribution systems by determining the optimal locations of non-dispatchable distributed generators and the optimal hourly power schedule of dispatchable distributed generators. The proposed algorithms are implemented in MATLAB environment and tested on the IEEE 37-node feeder. Several case studies are done and the subsequent discussions show the effectiveness of the proposed algorithms.

A.Y. Abdelaziz; Y.G. Hegazy; Walid El-Khattam; M.M. Othman

2015-01-01T23:59:59.000Z

123

EIS-0302: Transfer of the Heat Source/Radioisotope Thermoelectric Generator Assembly and Test Operations From the Mound Site  

Broader source: Energy.gov [DOE]

This EIS analyzes DOE's proposed transfer of the Heat Source/Radioisotope Thermoelectric Generator (HS/RTG) operations at the Mound Site near Miamisburg, Ohio, to an alternative DOE site.

124

Project Title: Small Scale Electrical Power Generation from Heat Co-Produced in Geothermal Fluids: Mining Operation  

SciTech Connect (OSTI)

Demonstrate the technical and economic feasibility of small scale power generation from low temperature co-produced fluids. Phase I is to Develop, Design and Test an economically feasible low temperature ORC solution to generate power from lower temperature co-produced geothermal fluids. Phase II &III are to fabricate, test and site a fully operational demonstrator unit on a gold mine working site and operate, remotely monitor and collect data per the DOE recommended data package for one year.

Clark, Thomas M [Principal Investigator; Erlach, Celeste [Communications Mgr.

2014-12-30T23:59:59.000Z

125

Network Capacity Assessment of CHP-based Distributed Generation on Urban Energy Distribution Networks.  

E-Print Network [OSTI]

??The combined heat and power (CHP)-based distributed generation (DG) or dis-tributed energy resources (DERs) are mature options available in the present energy mar-ket, considered to… (more)

Zhang, Xianjun

2013-01-01T23:59:59.000Z

126

Estimation of Ground-Level Reflectivity Factor in Operational Weather Radar Networks Using VPR-Based Correction Ensembles  

Science Journals Connector (OSTI)

An operational method is presented that corrects the bias of radar-based quantitative precipitation estimations (QPE) in radar networks that is due to the vertical profile of reflectivity (VPR) factor. It is used in both rain and snowfall. ...

Jarmo Koistinen; Heikki Pohjola

2014-10-01T23:59:59.000Z

127

Investigation of the operation process of a repairable technical object in an expert servicing system with an artificial neural network  

Science Journals Connector (OSTI)

This paper presents a method to investigate the effectiveness of an operation process with a servicing expert system including an artificial neural network. A method ... basis was presented of the modelling of an...

Stanis?aw Duer

2010-07-01T23:59:59.000Z

128

eShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation  

E-Print Network [OSTI]

eShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation Ting Zhu, Yu, Twin Cities {tzhu, yugu, tianhe, zhzhang}@cs.umn.edu Abstract The ability to move energy around makes it feasible to build distributed energy storage systems that can robustly ex- tend the lifetime of networked

Zhang, Zhi-Li

129

Operational water consumption and withdrawal factors for electricity generating technologies: a review of existing literature  

Science Journals Connector (OSTI)

This report provides estimates of operational water withdrawal and water consumption factors for electricity generating technologies in the United States. Estimates of water factors were collected from published primary literature and were not modified except for unit conversions. The water factors presented may be useful in modeling and policy analyses where reliable power plant level data are not available. Major findings of the report include: water withdrawal and consumption factors vary greatly across and within fuel technologies, and water factors show greater agreement when organized according to cooling technologies as opposed to fuel technologies; a transition to a less carbon-intensive electricity sector could result in either an increase or a decrease in water use, depending on the choice of technologies and cooling systems employed; concentrating solar power technologies and coal facilities with carbon capture and sequestration capabilities have the highest water consumption values when using a recirculating cooling system; and non-thermal renewables, such as photovoltaics and wind, have the lowest water consumption factors. Improved power plant data and further studies into the water requirements of energy technologies in different climatic regions would facilitate greater resolution in analyses of water impacts of future energy and economic scenarios. This report provides the foundation for conducting water use impact assessments of the power sector while also identifying gaps in data that could guide future research.

J Macknick; R Newmark; G Heath; K C Hallett

2012-01-01T23:59:59.000Z

130

Environmental Assessment for the Installation and Operation of Combustion Turbine Generators at Los Alamos National Laboratory, Los Alamos, New Mexico  

Broader source: Energy.gov (indexed) [DOE]

DOElEA- 430 DOElEA- 430 LA-UR-02-6482 Nationat Nudea- Security Administration Environmental Assessment for the Installation and Operation of Combustion Turbine Generators at Los Alamos National Laboratory, Los Alamos, New Mexico December II,2002 Department of Energy National Nuclear Security Administration Los Alamos Site Office Environmental Assessment for the Installation and Operation of Combustion Turbine Generators at LANL DOE LASO December 11, 2002 iii Contents ACRONYMS AND TERMS.......................................................................................................V EXECUTIVE SUMMARY ....................................................................................................... IX 1.0 PURPOSE AND NEED ........................................................................................................1

131

Decision-Support Software for Grid Operators: Transmission Topology Control for Infrastructure Resilience to the Integration of Renewable Generation  

SciTech Connect (OSTI)

GENI Project: The CRA team is developing control technology to help grid operators more actively manage power flows and integrate renewables by optimally turning on and off entire power lines in coordination with traditional control of generation and load resources. The control technology being developed would provide grid operators with tools to help manage transmission congestion by identifying the facilities whose on/off status must change to lower generation costs, increase utilization of renewable resources and improve system reliability. The technology is based on fast optimization algorithms for the near to real-time change in the on/off status of transmission facilities and their software implementation.

None

2012-03-16T23:59:59.000Z

132

A systemic approach for dimensioning and designing anaerobic bio-digestion/energy generation biomass supply networks  

Science Journals Connector (OSTI)

Abstract Anaerobic bio-digestion/energy generation complexes using animal waste raw materials represent an important component of renewable energy initiatives and policies worldwide, and are significant contributors to broaden sustainability efforts. In such projects bio-power feasibility depends heavily on generation complex access to biomass which is of costly transportation. As a result, an important component of renewable energy planning is the optimization of a logistics system to guarantee low-cost access to animal waste. This access is a function of local characteristics including number and geographic location of organic waste sources, operating and maintenance costs of the generation facility, energy prices, and marginal contribution of biomass collected and delivered to the anaerobic bio-digestion unit. Because biomass exhibits high transportation costs per unit of energy ultimately generated, and because different types of biomass have different biogas-generating properties, design of the supply logistics system can be the determinant factor towards economic viability of energy generation from an anaerobic bio-digestion plant. Indeed, to address this problem it is helpful to consider the farms, the logistics system, the anaerobic bio-digestion plant, and the generation plant as subsystems in an integrated system. Additionally, the existence of an outlet for manure may allow farmers to significantly raise boundaries of one constraint they face, namely disposing of animal waste, therefore permitting increases in farm production capacity. This paper suggests and outlines a systematic methodology to address the design of such systems.

João Neiva de Figueiredo; Sérgio Fernando Mayerle

2014-01-01T23:59:59.000Z

133

Review of Operational Water Consumption and Withdrawal Factors for Electricity Generating Technologies  

SciTech Connect (OSTI)

Various studies have attempted to consolidate published estimates of water use impacts of electricity generating technologies, resulting in a wide range of technologies and values based on different primary sources of literature. The goal of this work is to consolidate the various primary literature estimates of water use during the generation of electricity by conventional and renewable electricity generating technologies in the United States to more completely convey the variability and uncertainty associated with water use in electricity generating technologies.

Macknick, J.; Newmark, R.; Heath, G.; Hallett, K. C.

2011-03-01T23:59:59.000Z

134

Multivariate synthetic streamflow generation using a hybrid model based on artificial neural networks Hydrology and Earth System Sciences, 6(4), 641654 (2002) EGS  

E-Print Network [OSTI]

streamflow generation using a hybrid model based on artificial neural networks J.C. Ochoa-Rivera, R. GarcíaMultivariate synthetic streamflow generation using a hybrid model based on artificial neural neural network. The structure of the model results from two components, the neural network (NN

Paris-Sud XI, Université de

135

U.S. Installation, Operation, and Performance Standards for Microturbine Generator Sets, August 2000  

Broader source: Energy.gov [DOE]

Report detailing the various codes and standards that are applicable for the installation, operation, and performance of microturbines.

136

Chapter 25 - Intentional Islanding of Distribution Network Operation with Mini Hydrogeneration  

Science Journals Connector (OSTI)

Abstract The abundant presence of large river basins made Brazil a worldwide powerhouse of hydroelectricity. To maintain its long-tradition of clean energy producer, Brazil also is investing in mini hydro plants, of few megawatts, able to supply small towns in rural areas. This chapter focuses on a real case study of a mini hydro power plant connected to a rural distribution feeder. The investigations presented in this chapter highlight important stages for a successful intentional islanding operation. Those are the detection of the islanding, the necessary change in the control modes of voltage and frequency regulation, the islanding formation with load/generation balancing, the islanding autonomous operation and the reconnection to the main grid. Although, not yet established as a common practice in Brazil, islanding operation of renewable DG can improve reliability indices and help the human effort in diminishing global warming, if technically sound solutions are applied.

Glauco Nery Taranto; Tatiana M.L. Assis

2014-01-01T23:59:59.000Z

137

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

SciTech Connect (OSTI)

An interconnected electric power system is a complex system that must be operated within a safe frequency range in order to reliably maintain the instantaneous balance between generation and load. This is accomplished by ensuring that adequate resources are available to respond to expected and unexpected imbalances and restoring frequency to its scheduled value in order to ensure uninterrupted electric service to customers. Electrical systems must be flexible enough to reliably operate under a variety of"change" scenarios. System planners and operators must understand how other parts of the system change in response to the initial change, and need tools to manage such changes to ensure reliable operation within the scheduled frequency range. This report presents a systematic approach to identifying metrics that are useful for operating and planning a reliable system with increased amounts of variable renewable generation which builds on existing industry practices for frequency control after unexpected loss of a large amount of generation. The report introduces a set of metrics or tools for measuring the adequacy of frequency response within an interconnection. Based on the concept of the frequency nadir, these metrics take advantage of new information gathering and processing capabilities that system operators are developing for wide-area situational awareness. Primary frequency response is the leading metric that will be used by this report to assess the adequacy of primary frequency control reserves necessary to ensure reliable operation. It measures what is needed to arrest frequency decline (i.e., to establish frequency nadir) at a frequency higher than the highest set point for under-frequency load shedding within an interconnection. These metrics can be used to guide the reliable operation of an interconnection under changing circumstances.

Eto, Joseph H.; Undrill, John; Mackin, Peter; Daschmans, Ron; Williams, Ben; Haney, Brian; Hunt, Randall; Ellis, Jeff; Illian, Howard; Martinez, Carlos; O'Malley, Mark; Coughlin, Katie; LaCommare, Kristina Hamachi

2010-12-20T23:59:59.000Z

138

Artificial neural network based models for forecasting electricity generation of grid connected solar PV power plant  

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This paper presents an artificial neural network (ANN) approach for forecasting the performance of electric energy generated output from a working 25-kWp grid connected solar PV system and a 100-kWp grid connected PV system installed at Minicoy Island of Union Territory of Lakshadweep Islands. The ANN interpolates among the solar PV generation output and relevant parameters such as solar radiation, module temperature and clearness index. In this study, three ANN models are implemented and validated with reasonable accuracy on real electric energy generation output data. The first model is univariate based on solar radiation and the output values. The second model is a multivariate model based on module temperature along with solar radiation. The third model is also a multivariate model based on module temperature, solar radiation and clearness index. A forecasting performance measure such as percentage root mean square error has been presented for each model. The second model, which gives the most accurate results, has been used in forecasting the generation output for another PV system with similar accuracy.

Imtiaz Ashraf; A. Chandra

2004-01-01T23:59:59.000Z

139

Optimal control for variable-speed wind generation systems using General Regression Neural Network  

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Abstract An induction generator (IG) speed drive with the application of an optimal controller and a proposed General Regression Neural Network (GRNN) controller is introduced in this paper. Grid connected wind energy conversion system (WECS) present interesting control demands, due to the intrinsic nonlinear characteristic of wind mills and electric generators. The GRNN with adaptive ant colony optimization (AACO) torque compensation is feed-forward to increase the robustness of the wind driven induction generator system. An optimal control loop for the wind power system is designed. The optimality of the whole system is defined in relation with the trade-off between the wind energy conversion maximization and the minimization of the induction generator torque variation that is responsible for the frequency fluctuations. This is achieved by using a combined optimization criterion, resulting in a LQ tracking problem with an infinite horizon and a measurable exogenous variable (wind speed). The proposed controller is designed to drive the turbine speed to extract maximum power from the wind and adjust to the power regulation.

Chih-Ming Hong; Fu-Sheng Cheng; Chiung-Hsing Chen

2014-01-01T23:59:59.000Z

140

Potential Economic Impact of Constructing and Operating Solar Power Generation Facilities in Nevada  

SciTech Connect (OSTI)

Nevada has a vast potential for electricity generation using solar power. An examination of the stock of renewable resources in Nevada proves that the state has the potential to be a leader in renewable-electric generation--one of the best in the world. This study provides estimates on the economic impact in terms of employment, personal income, and gross state product (GSP) of developing a portion of Nevada's solar energy generation resources.

Schwer, R. K.; Riddel, M.

2004-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Operation strategy for a lab-scale grid-connected photovoltaic generation system integrated with battery energy storage  

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Abstract The operation strategy for a lab-scale grid-connected photovoltaic generation system integrated with battery energy storage is proposed in this paper. The photovoltaic generation system is composed of a full-bridge inverter, a DC–DC boost converter, an isolated bidirectional DC–DC converter, a solar cell array and a battery set. Since the battery set acts as an energy buffer to adjust the power generation of the solar cell array, the negative impact on power quality caused by the intermittent and unstable output power from a solar cell array is alleviated, so the penetration rate of the grid-connected photovoltaic generation system is increased. A lab-scale prototype is developed to verify the performance of the system. The experimental results show that it achieves the expected performance.

Hurng-Liahng Jou; Yi-Hao Chang; Jinn-Chang Wu; Kuen-Der Wu

2015-01-01T23:59:59.000Z

142

Analysis of the Impact of Balancing Area Cooperation on the Operation of the Western Interconnection with Wind and Solar Generation (Presentation)  

SciTech Connect (OSTI)

This presentation describes the analysis of the impact of balancing area cooperation on the operation of the Western Interconnection with wind and solar generation, including a discussion of operating reserves, ramping, production simulation, and conclusions.

Milligan, M.; Lew, D.; Jordan, G.; Piwko, R.; Kirby, B.; King, J.; Beuning, S.

2011-05-01T23:59:59.000Z

143

Open-source hardware and software and web application for gamma dose rate network operation  

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......the public telephone network, GSM or public authorities intranet to the respective measuring and service centre. Redundant...interface can easily be configured to support different network characteristics, including maps of the country where the network is implemented......

R. Luff; M. Zähringer; W. Harms; M. Bleher; B. Prommer; U. Stöhlker

2014-01-01T23:59:59.000Z

144

Flicker attenuation and transfer study for induction generator integrated into distribution network  

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Abstract Squirrel-cage induction generators (IGs) are widely used in distributed generation (DG). When the voltage at the point of common coupling is fluctuant, the embedded IG will show the impedance characteristic with dynamic changes under the different fluctuation frequencies. In addition, the drive train of IG set has great impact on the voltage flicker attenuation. This paper observes the dynamic response of IG to the voltage flicker through the experiments and further defines the flicker attenuation factor and transfer coefficient. A linearization model of IG with two-mass equivalent drive train is constructed through comparing the impacts of different drive trains (such as diesel engine, wind turbine) on the voltage flicker attenuation. Then an analytical method is proposed to determine the dynamic impedance, attenuation factor, transfer coefficient and flicker limit for IG integrated into distribution network. The correctness of the proposed method is verified by the experimental tests and the dynamic simulation using the detailed model of IG set. The parameters sensitivities of drive train and generator to the voltage flicker attenuation effect are analyzed and discussed in the paper.

Qianggang Wang; Niancheng Zhou; Jizhong Zhu; Wei Yan; Shu Pan

2014-01-01T23:59:59.000Z

145

Generation of ultrahigh frequency air microplasma in a magnetic loop and effects of pulse modulation on operation  

SciTech Connect (OSTI)

An atmospheric pressure air microplasma (APAMP) source was developed under ambient conditions using a magnetic loop at an operating frequency of 740 MHz. A self-igniting, stable APAMP was generated at 9.5 W. Pulse modulation (PM) was applied to the ultra high frequency signal. The effects of PM on self-ignition and operation of the APAMP source were studied by using a square wave modulating signal in the frequency range of 5-30 KHz. With the application of PM on the APAMP, in the best case, the plasma self-ignites and is sustained at 2.5 W.

Taghioskoui, Mazdak; Perlow, Joshua; Zaghloul, Mona [Department of Electrical and Computer Engineering, George Washington University, Washington, DC 20052 (United States); Montaser, Akbar [Department of Chemistry, George Washington University, Washington, DC 20052 (United States)

2010-05-10T23:59:59.000Z

146

Schrödinger Operators with Singular Complex Potentials as Generators: Existence and Stability  

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associated with Dirichlet forms and complex locally integrable V with negative real part in the Kato class we construct an extension of H + V which generates a C 0-semigroup on L

V. Liskevich; P. Stollmann

2000-05-01T23:59:59.000Z

147

A new approach to assess the positional accuracy of maps generated by GIS overlay operations  

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This paper proposes a new approach to assess the positional accuracy of maps generated by overlaying multi-scale spatial data layers with different levels of positional accuracy. The existing techniques for as...

Liu Wenbao; Xia Zongguo; Dai Honglei

2002-06-05T23:59:59.000Z

148

Micro-grid operation of inverter based distributed generation with voltage and frequency dependent loads  

E-Print Network [OSTI]

Distribution systems are experiencing increasing penetration of distributed generation (DG). One attractive option is to use the available DG capacity during utility outages by forming planned micro-grids. Load sharing ...

Zeineldin, H. H.

149

Operational behavior of a double-fed permanent magnet generator for wind turbines  

E-Print Network [OSTI]

Greater efficiency in wind turbine systems is achieved by allowing the rotor to change its rate of rotation as the wind speed changes. The wind turbine system is decoupled from the utility grid and a variable speed operation ...

Reddy, Sivananda Kumjula

2005-01-01T23:59:59.000Z

150

Dealing With Load and Generation Cost Uncertainties in Power System Operation Studies: A Fuzzy Approach  

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Power systems are currently facing a change of the paradigm that determined their operation and planning while being surrounded by multiple uncertainties sources. As a consequence, dealing with uncertainty is ...

Bruno André Gomes; João Tomé Saraiva

2010-01-01T23:59:59.000Z

151

Network  

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Network Network Facts & Stats Engineering Services The Network Network Maps Network Facts & Stats Connected Sites Peering Connections ESnet Site Availabiliy OSCARS Fasterdata...

152

Unit Commitment of Generator Sets During Dynamic Positioning Operation Based on  

E-Print Network [OSTI]

Simulation Torstein I. Bø Tor Arne Johansen Eirik Mathiesen Center for Autonomous Marine Operations positioning system, diesel-electric propulsion is often used. At all time the vessel should be able decades diesel-electric propulsion has become industry standard for some types of vessels such as drilling

Johansen, Tor Arne

153

Investigation of islanding operation in a small distribution network with small scale generation unit.  

E-Print Network [OSTI]

??Since the storm Gudrun in 2005, overhead lines are being replaced by underground cables. However the transition to cables lead to appearance of overvoltages during… (more)

Nilsson, Tom

2014-01-01T23:59:59.000Z

154

Applications of neural networks to monitoring and decision making in the operation of nuclear power plants. Summary  

SciTech Connect (OSTI)

Application of neural networks to monitoring and decision making in the operation of nuclear power plants is being investigated under a US Department of Energy sponsored program at the University of Tennessee. Projects include the feasibility of using neural networks for the following tasks: (1) diagnosing specific abnormal conditions or problems in nuclear power plants, (2) detection of the change of mode of operation of the plant, (3) validating signals coming from detectors, (4) review of ``noise`` data from TVA`s Sequoyah Nuclear Power Plant, and (5) examination of the NRC`s database of ``Letter Event Reports`` for correlation of sequences of events in the reported incidents. Each of these projects and its status are described briefly in this paper. This broad based program has as its objective the definition of the state-of-the-art in using neural networks to enhance the performance of commercial nuclear power plants.

Uhrig, R.E. [Tennessee Univ., Knoxville, TN (United States)]|[Oak Ridge National Lab., TN (United States)

1990-12-31T23:59:59.000Z

155

Spatial operators for evolving dynamic Bayesian networks from spatio-temporal data  

Science Journals Connector (OSTI)

Learning Bayesian networks from data has been studied extensively in the evolutionary algorithm communities [Larranaga96, Wong99]. We have previously explored extending some of these search methods to temporal Bayesian networks [Tucker01]. A characteristic ...

Allan Tucker; Xiaohui Liu; David Garway-Heath

2003-07-01T23:59:59.000Z

156

Mobile network sharing between operators: a demand trace-driven study  

Science Journals Connector (OSTI)

Network sharing is often hailed as a promising and cost-effective way to tackle the ever-increasing load of cellular networks. However, its actual effectiveness strongly depends on the correlation between the networks being joined -- intuitively, there ... Keywords: cellular traffic data, hotspot analysis, resource sharing

Paolo Di Francesco, Francesco Malandrino, Luiz A. DaSilva

2014-08-01T23:59:59.000Z

157

Analysis of viscoelastic soft dielectric elastomer generators operating in an electrical circuit  

E-Print Network [OSTI]

A predicting model for soft Dielectric Elastomer Generators (DEGs) must consider a realistic model of the electromechanical behaviour of the elastomer filling, the variable capacitor and of the electrical circuit connecting all elements of the device. In this paper such an objective is achieved by proposing a complete framework for reliable simulations of soft energy harvesters. In particular, a simple electrical circuit is realised by connecting the capacitor, stretched periodically by a source of mechanical work, in parallel with a battery through a diode and with an electrical load consuming the energy produced. The electrical model comprises resistances simulating the effect of the electrodes and of the conductivity current invariably present through the dielectric film. As these devices undergo a high number of electro-mechanical loading cycles at large deformation, the time-dependent response of the material must be taken into account as it strongly affects the generator outcome. To this end, the viscoelastic behaviour of the polymer and the possible change of permittivity with strains are analysed carefully by means of a proposed coupled electro-viscoelastic constitutive model, calibrated on experimental data available in the literature for an incompressible polyacrilate elastomer (3M VHB4910). Numerical results showing the importance of time-dependent behaviour on the evaluation of performance of DEGs for different loading conditions, namely equi-biaxial and uniaxial, are reported in the final section.

Eliana Bortot; Ralf Denzer; Andreas Menzel; Massimiliano Gei

2014-11-13T23:59:59.000Z

158

E-Print Network 3.0 - automatic equipment operation Sample Search...  

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Pennsylvania Collection: Biology and Medicine ; Chemistry 57 Safe Operating Procedure LOCKOUTTAGOUT FOR MACHINES & EQUIPMENT Summary: Safe Operating Procedure (511) LOCKOUT...

159

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

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Doubly Fed Induction Generator Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz Preprint Eduard Muljadi, Mohit Singh, and Vahan Gevorgian To be presented at the IEEE Energy Conversion Congress and Exhibition Raleigh, North Carolina September 15-20, 2012 Conference Paper NREL/CP-5500-55573 June 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

160

Experimental and thermodynamical analyses of the diesel exhaust vortex generator heat exchanger for optimizing its operating condition  

Science Journals Connector (OSTI)

Abstract In this research, a vortex generator heat exchanger is used to recover exergy from the exhaust of an OM314 diesel engine. Twenty vortex generators with 30° angle of attack are used to increase the heat recovery as well as the low back pressure in the exhaust. The experiments are prepared for five engine loads (0, 20, 40, 60 and 80% of full load), two exhaust gases amount (50 and 100%) and four water mass flow rates (50, 40, 30 and 20 g/s). After a thermodynamical analysis on the obtained data, an optimization study based on Central Composite Design (CCD) is performed due to complex effect of engine loads and water mass flow rates on exergy recovery and irreversibility to reach the best operating condition.

M. Hatami; D.D. Ganji; M. Gorji-Bandpy

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Operating Reserve Reductions from a Proposed Energy Imbalance Market with Wind and Solar Generation in the Western Interconnection  

SciTech Connect (OSTI)

This paper considers several alternative forms of an energy imbalance market (EIM) proposed in the nonmarket areas of the Western Interconnection. The proposed EIM includes two changes in operating practices that independently reduce variability and increase access to responsive resources: balancing authority cooperation and sub-hourly dispatch. As the penetration of variable generation increases on the power system, additional interest in coordination would likely occur. Several alternative approaches could be used, but consideration of any form of coordinated unit commitment is beyond the scope of this analysis. This report examines the benefits of several possible EIM implementations--both separately and in concert.

King, J.; Kirby, B.; Milligan, M.; Beuning, S.

2012-05-01T23:59:59.000Z

162

A novel study for constant voltage and frequency operation of self-excited short-shunt induction generator  

Science Journals Connector (OSTI)

This paper presents an analytical technique for selecting the optimal shunt and series capacitances required for maintaining constant load voltage and frequency of a self excited short shunt induction generator (SESSIG). The study investigates the performance of the SESSIG at different operating conditions, such as speed of the prime mover, load impedance and load power factor. The required capacitances have been determined using two second order non-linear equations based on the steady state equivalent circuit model, instead of the high order non-linear equations in the literatures. The capacitance values obtained by the proposed technique have been verified experimentally to confirm the validity and the accuracy of the proposed technique.

H.H. Hanafy; S.A. Zaid; A.M. Gesraha; M.M. Abd-Elaziz

2012-01-01T23:59:59.000Z

163

Operating conditions for the generation of stable anode spot plasma in front of a positively biased electrode  

SciTech Connect (OSTI)

Stability of an anode spot plasma, which is an additional high density plasma generated in front of a positively biased electrode immersed in ambient plasma, is a critical issue for its utilization to various types of ion sources. In this study, operating conditions for the generation of stable anode spot plasmas are experimentally investigated. Diagnostics of the bias current flowing into the positively biased electrode and the properties of ambient plasma reveal that unstable nature of the anode spot is deeply associated with the reduction of double layer potential between the anode spot plasma and the ambient plasma. It is found that stability of the anode spot plasma can be improved with increasing the ionization rate in ambient plasma so as to compensate the loss of electrons across the double layer or with enlarging the area of the biased electrode to prevent electron accumulation inside the anode spot. The results obtained from the present study give the guideline for operating conditions of anode spot plasmas as an ion source with high brightness.

Park, Yeong-Shin; Lee, Yuna; Dang, Jeong-Jeung [Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)] [Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Chung, Kyoung-Jae, E-mail: jkjlsh1@snu.ac.kr [Center for Advance Research in Fusion Reactor Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)] [Center for Advance Research in Fusion Reactor Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Hwang, Y. S. [Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of) [Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of); Center for Advance Research in Fusion Reactor Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)

2014-02-15T23:59:59.000Z

164

ASSESSMENT OF THE POTENTIAL FOR HYDROGEN GENERATION DURING GROUTING OPERATIONS IN C-REACTOR DISASSEMBLY BASIN  

SciTech Connect (OSTI)

C-reactor disassembly basin is being prepared for deactivation and decommissioning (D and D). D and D activities will consist primarily of immobilizing contaminated scrap components and structures in a grout-like formulation. The disassembly basin will be the first area of the C-reactor building that will be immobilized. The scrap components contain aluminum alloy materials. Any aluminum will corrode very rapidly when it comes in contact with the very alkaline grout (pH > 13), and as a result would produce hydrogen gas. To address this potential deflagration/explosion hazard, Savannah River National Laboratory (SRNL) reviewed and evaluated existing experimental and analytical studies of this issue to determine if any process constraints are necessary. The risk of accumulation of a flammable mixture of hydrogen above the surface of the water during the injection of grout into the C-reactor disassembly area is low if the assessment of the aluminum surface area is reliable. Conservative calculations estimate that there is insufficient aluminum present in the basin areas to result in significant hydrogen accumulation in this local region. The minimum safety margin (or factor) on a 60% LFL criterion for a local region of the basin (i.e., Horizontal Tube Storage) was greater than 3. Calculations also demonstrated that a flammable situation in the vapor space above the basin is unlikely. Although these calculations are conservative, there are some measures that may be taken to further minimize the risk of developing a flammable condition during grouting operations.

Wiersma, B.

2011-07-12T23:59:59.000Z

165

Helical magnetocumulative generators with magnetic flux amplification: Comparative advantages of amplification schemes and the operational efficiency of generators with dynamic transformation  

Science Journals Connector (OSTI)

The amplification capabilities of two types of helical magnetocumulative generators based on the cascade scheme of magnetic flux amplification, generators with dynamic transformation, and those with transformer ....

A. A. Bazanov

2011-09-01T23:59:59.000Z

166

E-Print Network 3.0 - anaesthesiological peri-operative practice...  

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in patients undergoing orthopedic surgery by peri-operative participation of a hospital pharmacist... ., Bosman J., Klopotowska J., Brouwers J.R.B.J., Peri-operative Drug...

167

E-Print Network 3.0 - advanced operational strategy Sample Search...  

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operational strategy Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced operational strategy Page: << < 1 2 3 4 5 > >> 1 Last up-dated...

168

E-Print Network 3.0 - advanced integrated operator Sample Search...  

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operator Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced integrated operator Page: << < 1 2 3 4 5 > >> 1 Graphic Artist Campus Prints...

169

Analysis of the operational reliability of a power-generating unit with a BN-600 reactor during the period 1980–1993  

Science Journals Connector (OSTI)

The high quality of the design and the additional improvements to separate units of the main equipment and systems at the initial stage of operation (first main circulation pump, steam generators, safety and c...

N. N. Oshkanov; A. G. Sheinkman; P. P. Govorov

1994-03-01T23:59:59.000Z

170

E-Print Network 3.0 - acoustic waves generated Sample Search...  

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Sciences 17 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

171

E-Print Network 3.0 - advanced generation inter-cross Sample...  

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Materials for ARES Engines Phil Maziasz ORNL April 17, 2003 12;UT... Generation Waukesha Natural Gas Reciprocating Engine - Electric Generator Sets 12;UT-BATTELLE Oak ... Source:...

172

E-Print Network 3.0 - als generates femtosecond Sample Search...  

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44, mars 1983 page C2-69 Summary: domaine de la femtoseconde est discutee. Abstract.- Recent advances in optical pulse generation techniques... to generate a compressed optical...

173

E-Print Network 3.0 - atomic beams generated Sample Search Results  

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beams generated Search Powered by Explorit Topic List Advanced Search Sample search results for: atomic beams generated Page: << < 1 2 3 4 5 > >> 1 Superradiant Rayleigh scattering...

174

E-Print Network 3.0 - alters macrophage generation Sample Search...  

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macrophage generation Search Powered by Explorit Topic List Advanced Search Sample search results for: alters macrophage generation Page: << < 1 2 3 4 5 > >> 1 Human...

175

E-Print Network 3.0 - adaptive mesh generation Sample Search...  

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generation Search Powered by Explorit Topic List Advanced Search Sample search results for: adaptive mesh generation Page: << < 1 2 3 4 5 > >> 1 SimulationMesh Elements Quality...

176

E-Print Network 3.0 - assembler generation library Sample Search...  

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generation library Search Powered by Explorit Topic List Advanced Search Sample search results for: assembler generation library Page: << < 1 2 3 4 5 > >> 1 Self-contained CLI...

177

E-Print Network 3.0 - action potential generation Sample Search...  

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generation Search Powered by Explorit Topic List Advanced Search Sample search results for: action potential generation Page: << < 1 2 3 4 5 > >> 1 For more information, please...

178

E-Print Network 3.0 - atf harmonic generation Sample Search Results  

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with for safe operations of the LINAC as required by the ATF Guidelines for Conduct of Operations. This set... for operation of the ATF and must be complied with. As a LINAC...

179

Compact lightweight power PEMFC operating from a unique hydrogen generating system. Final report, September 1993-March 1995  

SciTech Connect (OSTI)

The goal of this program was to investigate the feasibility, for the military, of a 120-watt, 20,000- watt-power source weighing near ten pounds. An air breathing proton exchange membrane fuel cell (PEMFC) utilizing hydrogen from Lithium Borohydride (LiBH4) could theoretically meet this specification. Giner, Inc. has established that a hydrogen generator, utilizing LiBH4, provides a hydrogen current flux of 150 Amps/sq ft with about 60% long-term utilization. Additionally, Giner, Inc. demonstrated a 120-watt fuel cell system, which operated at approximately 12 volts at 100 Amps/sq ft (10 amps through a 0.1 -sq ft active area). Integrating the two systems will require further effort and development work.

Theriault, R.

1995-11-01T23:59:59.000Z

180

A heuristic algorithm for lightpath scheduling in next-generation WDM optical networks  

Science Journals Connector (OSTI)

We study the routing and wavelength assignment (RWA) problem of scheduled lightpath demands (SLDs) in all-optical wavelength division multiplexing networks with no wavelength conversion capability. We consider the deterministic lightpath scheduling problem ... Keywords: Bee colony optimization (BCO), Optical network, Routing and wavelength assignment (RWA), Scheduled lightpath demands (SLD)

Goran Markovi?; Vladanka A?imovi?-Raspopovi?; Valentina Radoji?i?

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Photovoltaic solar system connected to the electric power grid operating as active power generator and reactive power compensator  

SciTech Connect (OSTI)

In the case of photovoltaic (PV) systems acting as distributed generation (DG) systems, the DC energy that is produced is fed to the grid through the power-conditioning unit (inverter). The majority of contemporary inverters used in DG systems are current source inverters (CSI) operating at unity power factor. If, however, we assume that voltage source inverters (VSI) can replace CSIs, we can generate reactive power proportionally to the remaining unused capacity at any given time. According to the theory of instantaneous power, the inverter reactive power can be regulated by changing the amplitude of its output voltage. In addition, the inverter active power can be adjusted by modifying the phase angle of its output voltage. Based on such theory, both the active power supply and the reactive power compensation (RPC) can be carried out simultaneously. When the insolation is weak or the PV modules are inoperative at night, the RPC feature of a PV system can still be used to improve the inverter utilisation factor. Some MATLAB simulation results are included here to show the feasibility of the method. (author)

Albuquerque, Fabio L.; Moraes, Adelio J.; Guimaraes, Geraldo C.; Sanhueza, Sergio M.R.; Vaz, Alexandre R. [Universidade Federal de Uberlandia, Uberlandia-MG, CEP 38400-902 (Brazil)

2010-07-15T23:59:59.000Z

182

A STATCOM based voltage regulator for parallel operated isolated asynchronous generators feeding three-phase four-wire loads  

Science Journals Connector (OSTI)

This paper presents an investigation on a voltage regulator for parallel operated isolated asynchronous generators (IAGs) supplying three-phase four-wire loads driven by constant speed prime mover like diesel engine, bio-mass, gasoline, etc. The proposed voltage regulator is realised using a static compensator (STATCOM) for providing the reactive power compensation, harmonic elimination and load balancing. Three single-phase insulated gate bipolar transistors (IGBTs) based VSCs along-with three single-phase transformers and self-supporting DC bus are used as a voltage controller for supplying three-phase four-wire loads. The neutral point of the load is achieved using the neutral point of the excitation capacitors and primary windings terminal of the transformers. The proposed isolated electrical generating system is modelled and simulated on MATLAB using Simulink and power system blockset (PSB) toolboxes. The performance of the proposed voltage controller for IAGs is demonstrated while feeding linear and non-linear balanced and unbalanced loads.

Gaurav Kumar Kasal; Bhim Singh

2009-01-01T23:59:59.000Z

183

First-year's operation of a full-scale second-generation FBC in an industrial plant  

SciTech Connect (OSTI)

Data related to the operation of a two stage coal fired fluidized bed boiler installed for Iowa Beef Processors, Inc. Amarillo, Texas are presented. This steam generator, which has a rating of 70,000 lb/hr steam, 650 psig, is the large privately funded fluidized bed coal combustion installation in the United States. The facility includes a dual bed combustor, whereby the coal is burned in a lower bed containing steam tubes and sulfur dioxide is collected in an upper bed containing dolomite. Coal burns predominantly in the lower bed at relatively high temperatures while combustion is completed in the upper bed. The upper bed also improves sulfur capture by reacting with SO/sub 2/ generated in the freeboard, which would be difficult to capture in early designs for FBC packaged boilers. The two stage concept provides high combustion efficiency, low NO/sub X/ emissions, and high sulfur capture. The results of recent measurements of emissions of sulfur dioxide will be included in this presentation. 4 figures.

Baty, G.B.

1984-01-01T23:59:59.000Z

184

A novel control strategy of a distributed generator operating in seven modes for ancillary services under grid faults  

Science Journals Connector (OSTI)

This study was interested in a renewable distributed generator (RDG) made up of a wind turbine used as a principal source and a supercapacitor (SC) considered as a storage system. The studied RDG is associated with loads to constitute a micro-grid (MG) which can operate in grid connected mode, stand alone mode or synchronization mode. The objective of this work is to investigate a novel control scheme for MG integrated into power electrical system in order to maintain the voltage and the frequency of the grid in an allowable range and to ensure the continuity of power supply in case of grid failure. This control strategy made up of two parts: the first one is the power management algorithm used to detect islanding in case of defect and to monitor the RDG into seven operating modes. The second one is the droop control used to control the exported or imported active and reactive powers transferred with the grid ensuring its stability by adjusting the frequency and amplitude of its output voltage. The system is simulated using MATLAB software and results are provided in order to show the feasibility of this control strategy.

Mouna Rekik; Achraf Abdelkafi; Lotfi Krichen

2013-01-01T23:59:59.000Z

185

Generation of non-local evolution loops and exchange operations for quantum control in three dimensional anisotropic Ising model  

E-Print Network [OSTI]

Control of quantum entanglement has been considered as elemental physical resource for quantum applications in Quantum Information and Quantum Computation. Control of entangled states on a couple of atoms, ions or quantum dots are milestones in almost all quantum applications towards a scalable spin-based quantum computers or quantum devices. For magnetic systems, Ising model is an interaction which generates and modi?es entanglement properties of quantum systems based on matter. In addition, when this interaction includes driven magnetic ?elds, it can be controlled to sustain, characterize or modify entanglement and other quantum properties. In this work, recent results about evolution in a general anisotropic three dimensional Ising model including an inhomogeneous magnetic ?eld is considered to obtain some general quantum control e?ects for their sustainability, programmed evolution or transformation: Evolution loops and Exchange operations. This control is achievable through a set of physical parameters, whose prescriptions are reported. The use of a non local basis in the model to express time evolution lets take advantage to describe and control the system, in particular with those issues associated with entanglement and operations mentioned before. Finally, some analysis about equivalent gates based on our development is made including an example with teleportation, using one of the gates constructed.

Francisco Delgado

2014-10-21T23:59:59.000Z

186

ENERGY SAVING IN OPTICAL OPERATOR NETWORKS: THE CHALLENGES, THE TREND VISION, AND SOME RESULTS  

Science Journals Connector (OSTI)

Abstract (40-Word Limit): We discuss how to save energy in IP-over-WDM networks, presenting the vision of TREND, the FP7 NoE, and the saving that can be obtained with adaptive routing...

Ajmone Marsan, Marco

187

Reliable and Fault-Tolerant Software-Defined Network Operations Scheme for Remote 3D Printing  

Science Journals Connector (OSTI)

The recent wide expansion of applicable three-dimensional (3D) printing and software-defined networking (SDN) technologies ... of responsiveness and reliability of SDN for remote 3D printing and control processes...

Dongkyun Kim; Joon-Min Gil

2014-12-01T23:59:59.000Z

188

E-Print Network 3.0 - as-operated heat loss Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

operated heat loss Search Powered by Explorit Topic List Advanced Search Sample search results for: as-operated heat loss Page: << < 1 2 3 4 5 > >> 1 Factsheet on Summer Heat Gain...

189

Intelligent-controlled doubly fed induction generator system using PFNN  

Science Journals Connector (OSTI)

An intelligent-controlled doubly fed induction generator (DFIG) system using probabilistic fuzzy neural network ( ... the transient and steady-state responses of the DFIG system at different operating conditions....

Faa-Jeng Lin; Yi-Sheng Huang; Kuang-Hsiung Tan…

2013-06-01T23:59:59.000Z

190

Artificial Neural Network Based Approach for Anti-islanding Protection of Distributed Generators  

Science Journals Connector (OSTI)

The anti-islanding protection of synchronous generators is typically performed by voltage and frequency ... is possible to recognize existent patterns on the distributed generator voltage waveform, which makes po...

Victor Luiz Merlin…

2014-06-01T23:59:59.000Z

191

E-Print Network 3.0 - atomic nano-generators actinium-225-labeled...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

nano-generators actinium-225-labeled Search Powered by Explorit Topic List Advanced Search Sample search results for: atomic nano-generators actinium-225-labeled Page: << < 1 2 3 4...

192

E-Print Network 3.0 - avoidance trajectory generation Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

"tail" trajectory... -adaptive generation of optimal continuous trajectories for mobile robots. In International Symposium on Artificial... and N. Miyake. Trajectory...

193

Open Control Networking Systems for Smarter Building Operations-Fundamentals of System Architecture and Design  

E-Print Network [OSTI]

?and?Introductions ? LONWORKS ? / LonMark ? the?Mission ? LONWORKS ? the?Technology ? LONMARK? ? the?Organization ICEBO Oct 18-20, 2011 LONMARK T H E M I S S I O N ICEBO Oct 18-20, 2011 4 Computer?Network? ? Standardized ? Compatible?products ? Interchangeable...?Network ? Standardized ? Compatible?products ? Interchangeable ? Interoperable ? Customizable ? Cost?efficient ? Multi?vendor? ? Freedom?of?choice ICEBO Oct 18-20, 2011 ISO Standard 14908 Further Standards Adoption ? Buildings, Gas Stations, Kitchen Equipment...

Gibson, M.

2011-01-01T23:59:59.000Z

194

Tone signal generator for producing multioperator tone signals using an operator circuit including a waveform generator, a selector and an enveloper  

DOE Patents [OSTI]

A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal.

Dong, Qiujie (Austin, TX); Jenkins, Michael V. (Austin, TX); Bernadas, Salvador R. (Austin, TX)

1997-01-01T23:59:59.000Z

195

Tone signal generator for producing multioperator tone signals using an operator circuit including a waveform generator, a selector and an enveloper  

DOE Patents [OSTI]

A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal. 17 figs.

Dong, Q.; Jenkins, M.V.; Bernadas, S.R.

1997-09-09T23:59:59.000Z

196

E-Print Network 3.0 - automated operations planning Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

State University Collection: Computer Technologies and Information Sciences 11 Operator Scheduling Strategies in Supervisory Control of Multiple UAVs M.L. Cummings* Summary: some...

197

E-Print Network 3.0 - algebraic operations Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Center for Operations Research Collection: Engineering 4 Pre-Lie algebras and Lie and Jordan analogues of Loday algebras (II) Summary: A dendriform algebra (A, , ) is a vector...

198

E-Print Network 3.0 - automatic train operation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: automatic train operation Page: << < 1 2 3 4 5 > >> 1 Princeton Plasma Physics Laboratory D-SITE...

199

E-Print Network 3.0 - adapted operating policies Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

operating policies Page: << < 1 2 3 4 5 > >> 1 "The current official version of this policy is maintained on the Victoria University Central Policy Register and downloading and...

200

E-Print Network 3.0 - air transport operations Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: . Experience ORNL has developed the Transportation Operations Model (TOM) software for the Department of Energy... for optimization Center for Transportation...

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

E-Print Network 3.0 - advanced mcr operators Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Computer Technologies and Information Sciences 31 Advanced Photon Source Conduct of Operations Manual Summary: ;TABLE OF CONTENTS x Advanced Photon Source Conduct of...

202

Prototype Demonstration of Integrating MPLS/GMPLS Network Operation and Management System  

Science Journals Connector (OSTI)

GMPLS (Generalized multi-protocol label switching) technology is expected to achieve efficient operation, administration and maintenance (OA&M), higher resource utilization and...

Ogaki, Kenichi; Miyazawa, Masanori; Otani, Tomohiro; Tanaka, Hideaki

203

E-Print Network 3.0 - affect grid operations Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the new grid | white Paper www.generAtinginsights.com Summary: grid: it challenges for energy Distribution grid operators the e-energy moma project addresses... " energy...

204

Design, Implementation and Operation of a Large Enterprise Content Distribution Network  

E-Print Network [OSTI]

for someone from a "help desk" to help them. We describe our approach and the system that was deployed, that includes end-users, the network provider, a support organi- zation (help desk), content owners- eration. Tools necessary to aid in fault management when problems occur should be available in a self

van der Merwe, Kobus

205

Optimization of operating conditions for steam turbine using an artificial neural network inverse  

Science Journals Connector (OSTI)

Abstract The useful life (UL) of the failure assessment in blades of steam turbines is optimized using the artificial intelligence. The objective of this paper is to develop an integrated approach using artificial neural network inverse (ANNi) coupling with a Nelder Mead optimization method to estimate the resonance stress when the UL of the blades is required. The proposed method \\{ANNi\\} is a new tool which inverts the artificial neural network (ANN). Firstly, It is necessary to build the artificial neural network (ANN) that simulates the output parameter (UL). ANN's model is constituted of feedforward network with one hidden layer to calculate the output of the process when input parameters are well known, then inverting ANN. The \\{ANNi\\} could be used as a tool to estimate the optimal unknown parameter required (resonance stress). Very low percentage of error and short computing time are precise and efficient, make this methodology (ANNi) attractive to be applied for control on line the UL of the system and constitutes a very promising framework for finding set of “good solutions”.

Y.El. Hamzaoui; J.A. Rodríguez; J.A. Hernández; Victor Salazar

2015-01-01T23:59:59.000Z

206

A Framework for Optimization of Operational Latency in Wireless Networks Eun-Sook Sung  

E-Print Network [OSTI]

utilization to achieve maximum throughput, minimization of energy usage by reducing low-power nodes' idle time a scheduling method. To complete collision-free transmission in minimum time slots a graph-coloring scheme, and minimization of latency to serve time-critical applications. We consider networks consisting of energy

Potkonjak, Miodrag

207

SNE TRAFIC GENERATOR  

Energy Science and Technology Software Center (OSTI)

003027MLTPL00 Network Traffic Generator for Low-rate Small Network Equipment Software  http://eln.lbl.gov/sne_traffic_gen.html 

208

DOE Backup Power Working Group Best Practices Handbook for Maintenance and Operation of Engine Generators, Volume II  

SciTech Connect (OSTI)

The lubricating oil system provides a means to introduce a lubricant in the form of a film to reduce friction and wear between surfaces that bear against each other as they move.1 The oil film which is established also cools the parts by carrying generated heat away from hot surfaces, cleans and carries dirt or metal wear particles to the filter media, and helps seal the piston to the cylinder during combustion. Most systems are pressure lubricated and distribute oil under pressure to bearings, gears, and power assemblies. Lubricating oil usually reaches main, connecting rod, and camshaft bearings through drilled passages in the cylinder block and crankshaft or through piping and common manifolds.Many parts rely on oil for cooling, so if the lube oil system fails to perform its function the engine will overheat. Metal to metal surfaces not separated by a thin film of oil rapidly build up frictional heat. As the metals reach their melting point, they tend to weld together in spots or streaks. Lube oil system failures can cause significant damage to an engine in a short period of time. Proper maintenance and operation of the lubricating oil system is essential if your engine is to accomplish its mission.

Gross, R.E.

1998-10-30T23:59:59.000Z

209

E-Print Network 3.0 - algebraic generating function Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

13 Speciality and Deformations of Algebras Ivan P. Shestakov Summary: + ba). Not any Jordan algebra is special; moreover, the variety generated by all special algebras... (yz)...

210

Energy Consumption of Next-Generation Optical-Wireless Converged Networks  

Science Journals Connector (OSTI)

We compare three different plausible architectures for next-generation optical-wireless convergence in energy conservation viewpoint. Our analysis provides insight into QoS rich...

Ranaweera, Chathurika; Lim, Christina; Wong, Elaine; Nirmalathas, Ampalavanapillai; Jayasundara, Chamil L

211

E-Print Network 3.0 - attosecond pulse generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

081003 (5pp) doi:10.10880953-4075418081003 Summary: . The attosecond pulses in the train generate a train of electron wave packets in the dissociating molecular ion... train....

212

E-Print Network 3.0 - automated structure generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

In-House Force Structure Simulation Testbed Simultaneous COA... eCOA Evaluation Automated Scenario Generation Generic EBO Modeling Capability EBO Simulation...

213

E-Print Network 3.0 - avispa-iie wind generator Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

doctor award (PO.139) Track: Technical Summary: on doubly-fed induction generator wind turbines with partial scale converter and on multipole permanent... magnet synchronous...

214

Thermoelectric-Generator-Based DC-DC Conversion Network for Automotive Applications.  

E-Print Network [OSTI]

?? As waste heat recovering techniques, especially thermoelectric generator (TEG technologies, develop during recent years?its utilization in automotive industry is attempted from many aspects. Previous… (more)

Li, Molan

2011-01-01T23:59:59.000Z

215

E-Print Network 3.0 - atp-generating enzymes secreted Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: atp-generating enzymes secreted Page: << < 1 2 3 4 5 > >> 1 Serine Biosynthesis with One...

216

E-Print Network 3.0 - alignment tensors generated Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

results for: alignment tensors generated Page: << < 1 2 3 4 5 > >> 1 Algorithm 862: MATLAB Tensor Classes for Fast Algorithm Prototyping Summary: . In other words, we align the...

217

E-Print Network 3.0 - asum frequency generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Information Sciences 89 Study of Very High Energy Gamma-ray Emission from the Pulsar Wind Nebula in Summary: are generated via inverse Compton scattering with electrons...

218

Fault Identification in Doubly Fed Induction Generator Using FFT and Neural Networks  

Science Journals Connector (OSTI)

This paper presents a fault identification system for doubly fed induction generator (DFIG). It considers cases of single phase ... with the PP to fault identification in the DFIG.

Marcelo Patrício de Santana…

2012-01-01T23:59:59.000Z

219

E-Print Network 3.0 - adaptive grid generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of .004, the adaptive algorithm automatically generates 5 refined grids. One grid patch... and more elsewhere, would clearly be optimal. In this talk, we describe a method of...

220

E-Print Network 3.0 - albright generating station Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cooling... and generator lube oil systems, (4) a 0.3 mile undergrounded transmission line from the project to ... Source: California Energy Commission Collection: Energy...

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

E-Print Network 3.0 - acid drainage generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

portfolio focuses on issues relevant to The Southwest, such as acid mine drainage, and uranium... mine drainage using sulfate-reducing bacteria That generate sulfides to...

222

ASSESSMENT OF THE POTENTIAL FOR HYDROGEN GENERATION DURING GROUTING OPERATIONS IN THE R AND P REACTOR VESSELS  

SciTech Connect (OSTI)

The R- and P-reactor buildings were retired from service and are now being prepared for deactivation and decommissioning (D&D). D&D activities will consist primarily of immobilizing contaminated components and structures in a grout-like formulation. Aluminum corrodes very rapidly when it comes in contact with the alkaline grout materials and as a result produces hydrogen gas. To address this potential deflagration/explosion hazard, the Materials Science and Technology Directorate (MS&T) of the Savannah River National Laboratory (SRNL) has been requested to review and evaluate existing experimental and analytical studies of this issue to determine if any process constraints on the chemistry of the fill material and the fill operation are necessary. Various options exist for the type of grout material that may be used for D&D of the reactor vessels. The grout formulation options include ceramicrete (pH 6-8), low pH portland cement + silica fume grout (pH 10.4), or portland cement grout (pH 12.5). The assessment concluded that either ceramicrete or the silica fume grout may be used to safely grout the R- and P- reactor vessels. The risk of accumulation of a flammable mixture of hydrogen between the grout-air interface and the top of the reactor is very low. Conservative calculations estimate that either ceramicrete or the silica fume grout may be used to safely grout the R- and P- reactor vessels. The risk of accumulation of a flammable mixture of hydrogen between the grout-air interface and the top of the reactor is very low. Although these calculations are conservative, there are some measures that may be taken to further minimize the potential for hydrogen evolution. (1) Minimize the temperature of the grout as much as practical. Lower temperatures will mean lower hydrogen generation rates. Grout temperatures less than 100 C should however, still provide an adequate safety margin for the pH 8 and pH 10.4 grout formulations. (2) Minimize the fill rate as much as practical. Lowering the fill rate takes advantage of passivation of the aluminum components and hence lower hydrogen generation rates. Fill rates that are less than 2 inches/min will reduce the chance of significant hydrogen build-up. (3) Ventilate the building as much as practical (e.g., leave doors open) to further disperse hydrogen. The volumetric hydrogen generation rates however, are low for the pH 8 and pH 10.4 grout, i.e., less than 0.32 ft{sup 3}/min. Portland cement grout, on the other hand, for the same range of process parameters does not provide a significant margin of safety against the accumulation of flammable gas in the reactor vessel during grouting operations. It is recommended that this grout not be utilized for this task. If further walk-down inspections of the reactor vessels suggest an increase in the actual areal density of aluminum, the calculations should be re-visited.

Wiersma, B.

2009-10-29T23:59:59.000Z

223

ASSESSMENT OF THE POTENTIAL FOR HYDROGEN GENERATION DURING GROUTING OPERATIONS IN THE R- AND P-REACTOR VESSELS  

SciTech Connect (OSTI)

The R- and P-reactor buildings were retired from service and are now being prepared for deactivation and decommissioning (D&D). D&D activities will consist primarily of immobilizing contaminated components and structures in a grout-like formulation. Aluminum corrodes very rapidly when it comes in contact with the alkaline grout materials and as a result produces hydrogen gas. To address this potential deflagration/explosion hazard, the Materials Science and Technology Directorate (MS&T) of the Savannah River National Laboratory (SRNL) has been requested to review and evaluate existing experimental and analytical studies of this issue to determine if any process constraints on the chemistry of the fill material and the fill operation are necessary. Various options exist for the type of grout material that may be used for D&D of the reactor vessels. The grout formulation options include ceramicrete (pH 6-8), low pH portland cement + silica fume grout (pH 10.4), or Portland cement grout (pH 12.5). The assessment concluded that either ceramicrete or the silica fume grout may be used to safely grout the P-reactor vessel. The risk of accumulation of a flammable mixture of hydrogen between the grout-air interface and the top of the reactor is very low. Portland cement grout, on the other hand, for the same range of process parameters does not provide a significant margin of safety against the accumulation of flammable gas in the reactor vessel during grouting operations in the P-reactor vessel. It is recommended that this grout not be utilized for this task. The R-reactor vessel contains significantly less aluminum and thus a Portland cement grout may be considered as well. For example, if the grout fill rate is less than 1 inch/min and the grout temperature is maintained at 70 C or less, the risk of hydrogen accumulation in the R-reactor vessel is very low for the Portland cement. Alternatively, if the grout fill rate is less than 0.5 inch/min and the grout is maintained at a temperature of 80 C, the risk will again be very low. Although these calculations are conservative, there are some measures that may be taken to further minimize the potential for hydrogen evolution. (1) Minimize the temperature of the grout as much as practical. Lower temperatures will mean lower hydrogen generation rates. For P-reactor, grout temperatures less than 100 C should provide an adequate safety margin for the pH 8 and pH 10.4 grout formulations. For R-reactor, grout temperatures less than 70 C or 80 C will provide an adequate safety margin for the Portland cement. The other grout formulations are also viable options for R-reactor. (2) Minimize the grout fill rate as much as practical. Lowering the fill rate takes advantage of passivation of the aluminum components and hence lower hydrogen generation rates. For P-reactor, fill rates that are less than 2 inches/min for the ceramicrete and the silica fume grouts will reduce the chance of significant hydrogen accumulation. For R-reactor, fill rates less than 1 inch/min will again minimize the risk of hydrogen accumulation. (3) Ventilate the building as much as practical (e.g., leave doors open) to further disperse hydrogen. The volumetric hydrogen generation rates in the P-reactor vessel, however, are low for the pH 8 and pH 10.4 grout, (i.e., less than 0.32 ft{sup 3}/min). If further walk-down inspections of the reactor vessels suggest an increase in the actual areal density of aluminum, the calculations should be re-visited.

Wiersma, B.

2009-12-29T23:59:59.000Z

224

Providing full point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer  

DOE Patents [OSTI]

Methods, apparatus, and products are disclosed for providing full point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer, each compute node connected to each adjacent compute node in the global combining network through a link, that include: receiving a network packet in a compute node, the network packet specifying a destination compute node; selecting, in dependence upon the destination compute node, at least one of the links for the compute node along which to forward the network packet toward the destination compute node; and forwarding the network packet along the selected link to the adjacent compute node connected to the compute node through the selected link.

Archer, Charles J; Faraj, Ahmad A; Inglett, Todd A; Ratterman, Joseph D

2013-04-16T23:59:59.000Z

225

E-Print Network 3.0 - adiabatic clock generators Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

logic (PAL) that operates from a single power-clock supply and outper- forms... a new pass-transistor CMOS adiabatic logic (PAL) that requires only one sinusoidal ......

226

A new approach based on ant colony optimization for daily Volt/Var control in distribution networks considering distributed generators  

Science Journals Connector (OSTI)

This paper presents a new approach to daily Volt/Var control in distribution systems with regard to distributed generators (DGs). Due to the small X/R ratio and radial configuration of distribution systems, \\{DGs\\} have much impact on this problem. A cost-based compensation methodology is proposed as a proper signal to encourage owners of \\{DGs\\} in active and reactive power generation. An evolutionary method based on ant colony optimization (ACO) is used to determine the active and reactive power values of DGs, reactive power values of capacitors and tap positions of transformers for the next day. The results indicate that the proposed encouraging factor has improved the performance of distribution networks on a large scale.

Taher Niknam

2008-01-01T23:59:59.000Z

227

Neurocomputing 6566 (2005) 237242 Recurrent neural network generates a basis for  

E-Print Network [OSTI]

(EOD) and detecting the perturbations that nearby objects cause in the self-generated electric field that are sensitive to external signals also respond to the fish's own EOD so that the EOD interferes with the detection of external sources. Since the fish generates the motor command for each EOD, the reafferent

Roberts, Patrick D.

228

Generic Emergence of Cognitive Behaviour in Self-Generating Neural Networks  

E-Print Network [OSTI]

the whole object the structure of a directed graph. 3. A matrix of connectivity (synaptic) strengths, which activities. Our design is implemented using Matlab, such that the growth process of the network and its (1987). What all these nets have in common is that their graph structure is fixed once and for all

Bohun, C. Sean

229

Evolutionary multi-objective generation of recurrent neural network ensembles for time series prediction  

Science Journals Connector (OSTI)

Ensembles have been shown to provide better generalization performance than single models. However, the creation, selection and combination of individual predictors is critical to the success of an ensemble, as each individual model needs to be both ... Keywords: Ensembles, Hybrid multi-objective evolutionary algorithms, Recurrent neural networks, Selection, Time series prediction

Christopher Smith, Yaochu Jin

2014-11-01T23:59:59.000Z

230

Modeling and Generation of Space-Time Correlated Signals for Sensor Network Fields  

E-Print Network [OSTI]

and recovery in Wireless Sensor Networks (WSNs) have utilized the spatio-temporal statistics of real world signals in order to achieve good performance in terms of energy savings and improved signal reconstruction address this gap by devising a mathematical model for real world signals that are correlated in space

Rossi, Michele

231

Wireless multimedia sensor and actor networks for the next generation power grid  

Science Journals Connector (OSTI)

Electrical power grid is undergoing a major renovation, to meet the power quality and power availability demands of the 21st century. The new power grid, which is also called as the smart grid, aims to integrate the recent technological advancements ... Keywords: Electrical power grid, Smart grid, Wireless multimedia sensor and actor network

Melike Erol-Kantarci; Hussein T. Mouftah

2011-06-01T23:59:59.000Z

232

An energy-aware dynamic RWA framework for next-generation wavelength-routed networks  

E-Print Network [OSTI]

of the underlying network infrastructure and make use of green energy sources wherever possible. This approach the development of ``green'' renewable energy sources (such as solar panels, wind turbines, and geothermal plants) for powering NEs. Green energy sources are preferable with respect to the tradi- tional ``dirty'' ones (e

Politècnica de Catalunya, Universitat

233

ASSESSMENT OF THE POTENTIAL FOR HYDROGEN GENERATION DURING GROUTING OPERATIONS IN THE R AND P REACTOR VESSELS  

SciTech Connect (OSTI)

The R- and P-reactor buildings were retired from service and are now being prepared for deactivation and decommissioning (D and D). D and D activities consist primarily of immobilizing contaminated components and structures in a grout-like formulation. Aluminum corrodes very rapidly when it comes in contact with the alkaline grout materials and as a result produces hydrogen gas. To address this potential deflagration/explosion hazard, the Materials Science and Technology Directorate (MS and T) of the Savannah River National Laboratory (SRNL) has been requested to review and evaluate existing experimental and analytical studies of this issue to determine if any process constraints on the chemistry of the fill material and the fill operation are necessary. Various options exist for the type of grout material that may be used for D and D of the reactor vessels. The grout formulation options include ceramicrete (pH 6-8), low pH portland cement + silica fume grout (pH 10.4), or Portland cement groupt (pH 12.5). The assessment concluded that either ceramicrete or the silica fume grout may be used to safely grout the P-reactor vessel. The risk of accumulation of a flammable mixture of hydrogen between the grout-air interface and the top of the reactor is very low. Portland cement grout, on the other hand, for the same range of process parameters does not provide a margin of safety against the accumulation of flammable gas in the reactor vessel during grouting operations in the P-reactor vessel. It is recommended that this grout not be utilized for this task. The R-reactor vessel cotnains significantly less aluminum based on current facility process knowledge, surface observations, and drawings. Therefore, a Portland cement grout may be considered for grouting operations as well as the other grout formulations. For example, if the grout fill rate is less than 1 inch/min and the grout temperature is maintained at 70 C or less, the risk of hydrogen accumulation during fill operations in the R-reactor vessel is low for the Portland cement. Alternatively, if the grout fill rate is less than 0.5 inch/min and the grout is maintained at a temperature of 80 C, the risk is again low. Although these calculations are conservative, there are some measures that may be taken to further minimize the potential for hydrogen evolution. (1) Minimize the temperature of the grout as much as practical. Lower temperatures will mean lower hydrogen generation rates. For P-reactor, grout temperatures less than 100 C should provide an adequate safety margin for the pH 8 and pH 10.4 grout formulations. For R-reactor, grout temperatures less than 70 C or 80 C will provide an adequate safety margin for the Portland cement. The other grout formulations are also viable options for R-reactor. (2) Minimize the grout fill rate as much as practical. Lowering the fill rate takes advantage of passivation of the aluminum components and hence lower hydrogen generation rates. For P-reactor, fill rates that are less than 2 inches/min for the ceramicrete and the silica fume grouts will reduce the chance of significant hydrogen accumulation. For R-reactor, fill rates less than 1 inch/min will again minimize the risk of hydrogen accumulation. (3) Ventilate the building as much as practical (e.g., leave doors open) to further disperse hydrogen. The volumetric hydrogen generation rates in the P-reactor vessel, however, are low for the pH 8 and pH 10.4 grout, (i.e., less than 0.97 ft{sup 3}/min). If further walk-down inspections of the reactor vessels suggest an increase in the actual areal density of aluminum, the calculations should be re-visited.

Wiersma, B.

2010-05-24T23:59:59.000Z

234

Models and Solution Approaches for Efficient Design and Operation of Wireless Sensor Networks  

E-Print Network [OSTI]

of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Halit ?Uster Committee Members, Abhijit Deshmukh Eylem Tekin Ibrahim Karaman Head of Department, Brett Peters..., Tianjin,China Chair of Advisory Committee: Dr. Halit ?Uster Recent advancements in sensory devices are presenting various opportunities for widespread applications of wireless sensor networks (WSNs). The most distinguishing characteristic of a WSN...

Lin, Hui 1981-

2010-11-11T23:59:59.000Z

235

E-Print Network 3.0 - automate complex operations Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Ecology ; Engineering Page: << < 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 21 Operator Scheduling Strategies in Supervisory Control of Multiple UAVs M.L. Cummings* Summary:...

236

E-Print Network 3.0 - aluminum buffing operation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Analytic Study of Partially Ordered Transport Services Lambda Rahmi Marasli Paul D. Amer Phillip T. Conrad Summary: a parallel operator: 1jj2jj3jj4 (xjjy means there is no...

237

An Operational System for Generating Cloud Drift Winds in the Australian Region and Their Impact on Numerical Weather Prediction  

Science Journals Connector (OSTI)

The Australian Bureau of Meteorology has, since June 1992, produced cloud drift wind data for operational use. These data are used in the analysis cycle of the local operational numerical weather prediction system. This paper describes the ...

John Le Marshall; Neil Pescod; Bob Seaman; Graham Mills; Paul Stewart

1994-09-01T23:59:59.000Z

238

E-Print Network 3.0 - aerosol generator model Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

generator model Page: << < 1 2 3 4 5 > >> 1 The Way Forward2 Authors: David Rind, NASA GISS; Ralph A. Kahn, NASA GSFC; Mian Chin, NASA3 Summary: assistance from models, are...

239

E-Print Network 3.0 - atp generation capacity Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: atp generation capacity Page: << < 1 2 3 4 5 > >> 1 Asymmetric deceleration of ClpB or...

240

E-Print Network 3.0 - autonomous trajectory generation Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

generation Page: << < 1 2 3 4 5 > >> 1 Learning Maneuver Dictionaries for Ground Robot Planning Pierre Sermanet1,2 Marco Scoffier1,2 Chris Crudele2 Urs Muller2 Yann LeCun1...

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

E-Print Network 3.0 - acrolein generation stimulates Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: acrolein generation stimulates Page: << < 1 2 3 4 5 > >> 1 Acrolein-induced cell death in PC12...

242

E-Print Network 3.0 - advanced test generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: advanced test generation Page: << < 1 2 3 4 5 > >> 1 WISE 2004 -Brisbane AutoDBT: A Framework for...

243

E-Print Network 3.0 - automatic test generation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: automatic test generation Page: << < 1 2 3 4 5 > >> 1 WebWeb--CAT User GroupCAT User Group...

244

E-Print Network 3.0 - advance generation mutants Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

100 gml for strain MnB1. Mutagenesis. Transposon mutants were generated... -encrusted pipeline that can oxidize Mn(II) to Mn oxides. We used transposon mutagenesis to construct...

245

Design and Operational Planning of Energy Networks Based on Combined Heat and Power Units  

Science Journals Connector (OSTI)

For each time period and sector, big-M constraints 13 model the heat (generated by the energy generator installed in the sector) transferred to the heat storage tank of the sector (Q?sit). ... Heat and electricity demand data for the reference case have been taken from the Milton Keynes Energy Park data set provided by the U.K. Energy Research Centre Energy Data Centre. ... Cardoso, G.; Stadler, M.; Siddiqui, A.; Marnay, C.; Deforest, N.; Barbosa-Póvoa, A.; Ferrão, P.Microgrid reliability modeling and battery scheduling using stochastic linear programming Electric Power Syst. ...

Nikolaos E. Koltsaklis; Georgios M. Kopanos; Michael C. Georgiadis

2014-03-05T23:59:59.000Z

246

Generated using version 3.0 of the official AMS LATEX template A remotely-operated lidar for aerosol, temperature, and water  

E-Print Network [OSTI]

Generated using version 3.0 of the official AMS LATEX template A remotely-operated lidar for aerosol, temperature, and water vapor profiling in the High Arctic. G. J. Nott, T. J. Duck, J. G. Doyle, M. E. W. Coffin, C. Perro, C. P. Thackray, and J. R. Drummond Department of Physics and Atmospheric

Duck, Thomas J.

247

An evaluation of the operating effectiveness of a computer-controlled traffic network  

E-Print Network [OSTI]

to an inter- section of a heavy-volume, high speed traffic artery with a rela- tively lightly traveled minor road or street, and it works well when street capacity is not a critical problem. (14) Semi-actuated equipment operates with detectors on minor... to an inter- section of a heavy-volume, high speed traffic artery with a rela- tively lightly traveled minor road or street, and it works well when street capacity is not a critical problem. (14) Semi-actuated equipment operates with detectors on minor...

De Steiguer, Allen Louis

2012-06-07T23:59:59.000Z

248

Open-source hardware and software and web application for gamma dose rate network operation  

Science Journals Connector (OSTI)

......protocols for data transfer are...where no fixed line telephone or...radioactive plume. The data logger generates...during power outages and is only used...analogue data transmission. DATA LOGGER SOFTWARE...long-term power outages (low battery......

R. Luff; M. Zähringer; W. Harms; M. Bleher; B. Prommer; U. Stöhlker

2014-01-01T23:59:59.000Z

249

Definition: Operating Reserve | Open Energy Information  

Open Energy Info (EERE)

Operating Reserve Operating Reserve Jump to: navigation, search Dictionary.png Operating Reserve That capability above firm system demand required to provide for regulation, load forecasting error, equipment forced and scheduled outages and local area protection. It consists of spinning and non-spinning reserve.[1] View on Wikipedia Wikipedia Definition In electricity networks, the operating reserve is the generating capacity available to the system operator within a short interval of time to meet demand in case a generator goes down or there is another disruption to the supply. Most power systems are designed so that, under normal conditions, the operating reserve is always at least the capacity of the largest generator plus a fraction of the peak load. The operating reserve

250

A Gravitational Search Algorithm (GSA) based Photo-Voltaic (PV) excitation control strategy for single phase operation of three phase wind-turbine coupled induction generator  

Science Journals Connector (OSTI)

Abstract Three phase induction generators are widely used for single phase operation in wind based micro-generation schemes to cater single phase loads due to various advantages. This paper presents an improved control methodology for self excited three phase induction generator operating in single phase mode. The excitation is controlled through an inverter with Photo-Voltaic (PV) panels providing power to the dc bus. The proposed technique enables the generator for building up voltage from low wind speeds compared to conventional three phase machines. A capacitor connected across load terminals reduces the reactive power supplied by the inverter connected across the other two phases. Gravitational search algorithm (GSA) is used to calculate the switching angles of the inverter under various load and wind speeds for minimum Total Harmonic Distortion (THD) of the generated voltage. The proposed induction generator is aimed to be conveniently used in remote and grid isolated areas as a portable source of electrical power driving single phase loads. Simulations and experiments performed on a 3-phase 1 kW, 415 V, 50 Hz, 1440 r/min induction machine validates the proposed concept.

Arunava Chatterjee; Krishna Roy; Debashis Chatterjee

2014-01-01T23:59:59.000Z

251

Development and performance assessment of a Plasma Focus electron beam generator for Intra-Operative Radiation Therapy.  

E-Print Network [OSTI]

??The Plasma Focus is a device designed to generate a plasma sheet between two coaxial electrodes by means of a high voltage difference. The plasma… (more)

Ceccolini, Elisa and#60;1983and#62

2012-01-01T23:59:59.000Z

252

A novel design in harvesting energy from operating machines by converting their generated waste energies to electricity.  

E-Print Network [OSTI]

??Wireless devices have been widely adopted in machine health monitoring because they can acquire data from machines that are operating and can be installed in… (more)

Lam, Cheuk Yi (???)

2008-01-01T23:59:59.000Z

253

Generating functional analysis of complex formation and dissociation in large protein interaction networks  

E-Print Network [OSTI]

proteins, using techniques from the non-equilibrium statistical mechanics of disordered many proteins are reaction partners from an ensemble of random graphs with an arbitrary degree distribution. WeGenerating functional analysis of complex formation and dissociation in large protein interaction

Coolen, ACC "Ton"

254

Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using Artificial Neural Network Angle Generation  

SciTech Connect (OSTI)

This work approximates the selective harmonic elimination problem using artificial neural networks (ANNs) to generate the switching angles in an 11-level full-bridge cascade inverter powered by five varying dc input sources. Each of the five full bridges of the cascade inverter was connected to a separate 195-W solar panel. The angles were chosen such that the fundamental was kept constant and the low-order harmonics were minimized or eliminated. A nondeterministic method is used to solve the system for the angles and to obtain the data set for the ANN training. The method also provides a set of acceptable solutions in the space where solutions do not exist by analytical methods. The trained ANN is a suitable tool that brings a small generalization effect on the angles' precision and is able to perform in real time (50-/60-Hz time window).

Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL; Filho, Faete [ORNL; Cao, Yue [ORNL

2011-01-01T23:59:59.000Z

255

Cost reduction of distribution network protection in presence of distributed generation using optimized fault current limiter allocation  

Science Journals Connector (OSTI)

Using Solid State Fault Current Limiters (SSFCLs) has been proposed as a potential cost-efficient candidate to minimize the effect of exposing Distributed Generation (DG) to the distribution system. Genetic Algorithm (GA) is employed to find the optimum number, location and size of \\{FCLs\\} to be used in the network. The numerical and simulation results show the efficiency of proposed GA-based FCL allocation and sizing method in terms of minimizing the cost of distribution protection system. The prices of \\{FCLs\\} are estimated using real market prices and simulations are performed in four cases assuming prices more than the estimated one, less than estimated price and equal to the real estimated cost for FCL. Numerical results show that FCL price highly affects the optimum choices for \\{FCLs\\} and the price imposed by using FCLs.

Sayyed Ali Akbar Shahriari; Ali Yazdian Varjani; Mahmood Reza Haghifam

2012-01-01T23:59:59.000Z

256

Evaluation of the photovoltaic generation potential and real-time analysis of the photovoltaic panel operation on a building facade in southern Brazil  

Science Journals Connector (OSTI)

Abstract Solar photovoltaic systems are an alternative to the current model of power generation, supplying clean energy with little environmental impact and no significant losses associated with distribution networks. This study aims to obtain data on electricity generation in real time for a photovoltaic panel installed in the city of Lajeado, Rio Grande do Sul, Brazil, comparing the electric power generation of the photovoltaic panel with the solar radiation data of the city, obtained with the use of a pyranometer. Data from incident solar radiation, measured in the city, on the period of 2007–2012 were used. Comparisons with data from power generation of the photovoltaic panel and assessment of the solar potential were performed. The photovoltaic panel has an area of 16.5 m2 and was installed on the campus of UNIVATES University Center, arranged so that it faces the true north and tilted at an angle of 24°, for better utilization of solar radiation incident along the year. At the end of this phase of the study, it was obtained an average power generation of 11.0 kWh/day and efficiency of the modules in the order of 12.6%.

João Vicente Akwa; Odorico Konrad; Gustavo Vinícius Kaufmann; Cezar Augusto Machado

2014-01-01T23:59:59.000Z

257

Networking from a network coding perspective  

E-Print Network [OSTI]

Network coding generalizes network operation beyond traditional routing, or store-and-forward, approaches, allowing for mathematical operations across data streams within a network. This thesis considers a number of ...

Ho, Tracey, 1976-

2004-01-01T23:59:59.000Z

258

Integration and operation of post-combustion capture system on coal-fired power generation: load following and peak power  

E-Print Network [OSTI]

Coal-fired power plants with post combustion capture and sequestration (CCS) systems have a variety of challenges to integrate the steam generation, air quality control, cooling water systems and steam turbine with the ...

Brasington, Robert David, S.M. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

259

Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Site Feedback: info@es.net About ESnet A Nationwide Platform for Science Discovery The Energy Sciences Network (ESnet) is a high-performance, unclassified national network built to...

260

EA-0995: Drum Storage Facility for Interim Storage of Materials Generated by Environmental Restoration Operations, Golden, Colorado  

Broader source: Energy.gov [DOE]

This EA evaluates the environmental impacts of the proposal to construct and operate a drum storage facility at the U.S. Department of Energy's Rocky Flats Environmental Technology Site in Golden,...

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Implementation of 10 CFR 20.1406, Regarding Minimizing Contamination and the Generation of Waste, and Facilitating Decommissioning through the Design of Facilities and Operating Procedures  

SciTech Connect (OSTI)

In the very near future (perhaps as soon as the fall of 2007), the U.S. Nuclear Regulatory Commission (NRC) anticipates receiving one or more license applications for new nuclear power plants. An important consideration for new facilities is that they be designed and operated to minimize contamination, to minimize the generation of waste, and to facilitate decommissioning. A relatively recent regulation, 10 CFR 20.1406, mandates these requirements. The regulation states, 'Applicants for licenses, other than renewals, after August 20, 1997, shall describe in the application how facility design and procedures for operation will minimize, to the extent practicable, contamination of the facility and the environment, facilitate eventual decommissioning, and minimize, to the extent practicable, the generation of radioactive waste'. This paper summarizes various initiatives taken by the NRC and industry to develop guidance for implementing 10 CFR 20.1406 before submission of license applications. (authors)

O'Donnell, E.; Ott, W.R. [Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Washington, DC (United States)

2007-07-01T23:59:59.000Z

262

Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost  

SciTech Connect (OSTI)

Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

2013-04-01T23:59:59.000Z

263

Backup power working group best practices handbook for maintenance and operation of engine generators, Volume 1. Revision 1  

SciTech Connect (OSTI)

This handbook is divided into the four chapters. Chapter one covers the design, procurement, storage, handling and testing of diesel fuel oil to be used in DOE backup power supplies. Chapter two discusses the selection of automatic transfer switches to be used in DOE backup power supplies. Chapter three is about low voltage open frame air circuit breaker operation, testing, and maintenance for DOE backup power supplies. And chapter four covers installation, design, and maintenance of engine cooling water and jacket water systems.

Gross, R.; Padgett, A.B.; Burrows, K.P.; Fairchild, P.N.; Lam, T.; Janes, J.

1997-06-01T23:59:59.000Z

264

Definition: Operating Reserve - Spinning | Open Energy Information  

Open Energy Info (EERE)

Reserve - Spinning Reserve - Spinning Jump to: navigation, search Dictionary.png Operating Reserve - Spinning The portion of Operating Reserve consisting of: Generation synchronized to the system and fully available to serve load within the Disturbance Recovery Period following the contingency event; or, Load fully removable from the system within the Disturbance Recovery Period following the contingency event.[1] View on Wikipedia Wikipedia Definition In electricity networks, the operating reserve is the generating capacity available to the system operator within a short interval of time to meet demand in case a generator goes down or there is another disruption to the supply. Most power systems are designed so that, under normal conditions, the operating reserve is always at least the capacity of the

265

Definition: Operating Reserve - Supplemental | Open Energy Information  

Open Energy Info (EERE)

Supplemental Supplemental Jump to: navigation, search Dictionary.png Operating Reserve - Supplemental The portion of Operating Reserve consisting of: Generation (synchronized or capable of being synchronized to the system) that is fully available to serve load within the Disturbance Recovery Period following the contingency event; or, Load fully removable from the system within the Disturbance Recovery Period following the contingency event.[1] View on Wikipedia Wikipedia Definition In electricity networks, the operating reserve is the generating capacity available to the system operator within a short interval of time to meet demand in case a generator goes down or there is another disruption to the supply. Most power systems are designed so that, under normal conditions, the operating reserve is always at least the capacity of the

266

IEEE Wireless Communications April 201374 1536-1284/13/$25.00 2013 IEEE NEXT GENERATION COGNITIVE CELLULAR NETWORKS  

E-Print Network [OSTI]

the licensed spectrum, a crucial requirement of cognitive radio networks is that they must effi- ciently COGNITIVE CELLULAR NETWORKS INTRODUCTION Radio frequency (RF) spectrum is a valuable but tightly regulated for sharing spectrum with cognitive radio networks. Hence, cognitive radios should be able to independently

Wang, Cheng-Xiang

267

Abundance and distribution of macro-crustaceans in the intake and discharge areas before and during early operation of the Cedar Bayou Generating Station  

E-Print Network [OSTI]

at Stations 4 and 5 varied from 3. 0 to 4. 0 m. The substrate at these two stations was silt and clay, with a very high content of organic debris. Trinity Bay, Discharge Area Each of shoreline Stations 6, 9, 19, 21, and 24 were located at 1610 m (I mile...ABUNDANCE AND DISTRIBUTION OF MACRO-CRUSTACEANS IN THE INTAKE AND DISCHARGE AREAS BEFORE AND DURING EARLY OPERATION OF THE CEDAR BAYOU GENERATING STATION A Thesis by MONROE SCHMIDT Submitted to the Graduate College of Texas A&M University...

Schmidt, Monroe

1972-01-01T23:59:59.000Z

268

Unbundling ownership and control: international experience of independent system operators  

Science Journals Connector (OSTI)

As competition has been introduced into electricity markets around the world, a fundamental challenge has been how to govern the vertical relationship between the monopolistic transmission networks and the potentially competitive activities of generation and supply. An innovative solution is to allow the incumbent to retain ownership of its network but to hand over their operation to an Independent Systems Operator (ISO). In principle, this should remove the opportunity for the owner of the transmission network to discriminate against third-party suppliers. It also allows the integration of transmission networks in separate regions and under separate ownership. This paper considers the lessons of the British and US experience of the ISO model. We conclude that if the British model works, it could be applied within Germany, with the regional networks operated by a single ISO. Ultimately, these types of arrangements could also allow supranational electricity transmission markets in Europe.

Enese Lieb-Doczy; Isabelle McKenzie; David Squires

2008-01-01T23:59:59.000Z

269

Operation and performance of a 350 kW (100 RT) single-effect/double-lift absorption chiller in a district heating network  

SciTech Connect (OSTI)

The efficiency of combined heat, power, and cold production in total energy systems could be improved significantly if absorption chillers were available that could be driven with limited mass flows of low-temperature hot water. In the case of district heat-driven air conditioning, for example, currently available standard absorption chillers are often not applied because they cannot provide the low hot water return temperature and the specific cooling capacity per unit hot water mass flow that are required by many district heating networks. Above all, a drastic increase in the size of the machine (total heat exchanger area) due to low driving temperature differences if of concern in low-temperature applications. A new type of multistage lithium bromide/water absorption chiller has been developed for the summertime operating conditions of district heating networks. It provides large cooling of the district heating water (some 30 K) and large cooling capacity per unit hot water mass flow. Two pilot plants of this novel absorption chiller were designed within the framework of a joint project sponsored by the German Federal Ministry of Education, Science, Research and Technology (BMBF), a consortium of 15 district heating utilities, and two manufacturers. The plants have been operated since summer 1996 in the district heating networks of Berlin and Duesseldorf. This paper describes the concept, installation, and control strategy of the two pilot plants, and it surveys the performance and operating experience of the plants under varying practical conditions.

Schweigler, C.J.; Preissner, M.; Demmel, S.; Hellmann, H.M.; Ziegler, F.F. [ZAE Bayern, Garching/Munich (Germany)

1998-10-01T23:59:59.000Z

270

Final environmental assessment and Finding-of-No-Significant-Impact - drum storage facility for interim storage of materials generated by environmental restoration operations  

SciTech Connect (OSTI)

The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-0995, for the construction and operation of a drum storage facility at Rocky Flats Environmental Technology Site, Golden, Colorado. The proposal for construction of the facility was generated in response to current and anticipated future needs for interim storage of waste materials generated by environmental restoration operations. A public meeting was held on July 20, 1994, at which the scope and analyses of the EA were presented. The scope of the EA included evaluation of alternative methods of storage, including no action. A comment period from July 5, 1994 through August 4, 1994, was provided to the public and the State of Colorado to submit written comment on the EA. No written comments were received regarding this proposed action, therefore no comment response is included in the Final EA. Based on the analyses in the EA, DOE has determined that the proposed action would not significantly affect the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, preparation of an Environmental Impact Statement is not required and the Department is issuing this Finding of No Significant Impact.

Not Available

1994-09-01T23:59:59.000Z

271

Virtually simulating the next generation of clean energy technologies: NETL's AVESTAR Center is dedicated to the safe, reliable and efficient operation of advanced energy plants with carbon capture  

SciTech Connect (OSTI)

Imagine using a real-time virtual simulator to learn to fly a space shuttle or rebuild your car's transmission without touching a piece of equipment or getting your hands dirty. Now, apply this concept to learning how to operate and control a state-of-the-art, electricity-producing power plant capable of carbon dioxide (CO{sub 2}) capture. That's what the National Energy Technology Laboratory's (NETL) Advanced Virtual Energy Simulation Training and Research (AVESTAR) Center (www.netl.doe.gov/avestar) is designed to do. Established as part of the Department of Energy's (DOE) initiative to advance new clean energy technology for power generation, the AVESTAR Center focuses primarily on providing simulation-based training for process engineers and energy plant operators, starting with the deployment of a first-of-a-kind operator training simulator for an integrated gasification combined cycle (IGCC) power plant with CO{sub 2} capture. The IGCC dynamic simulator builds on, and reaches beyond, conventional power plant simulators to merge, for the first time, a 'gasification with CO{sub 2} capture' process simulator with a 'combined-cycle' power simulator. Based on Invensys Operations Management's SimSci-Esscor DYNSIM software, the high-fidelity dynamic simulator provides realistic training on IGCC plant operations, including normal and faulted operations, as well as plant start-up, shutdown and power demand load changes. The highly flexible simulator also allows for testing of different types of fuel sources, such as petcoke and biomass, as well as co-firing fuel mixtures. The IGCC dynamic simulator is available at AVESTAR's two locations, NETL (Figure 1) and West Virginia University's National Research Center for Coal and Energy (www.nrcce.wvu.edu), both in Morgantown, W.Va. By offering a comprehensive IGCC training program, AVESTAR aims to develop a workforce well prepared to operate, control and manage commercial-scale gasification-based power plants with CO{sub 2} capture. The facility and simulator at West Virginia University promotes NETL's outreach mission by offering hands-on simulator training and education to researchers and university students.

Zitney, S.

2012-01-01T23:59:59.000Z

272

Statement of Interest in a New Project, in response to PPARC call of April 26th FHIRN: A next-generation radio network for exploring the 3-dimensional solar wind  

E-Print Network [OSTI]

-situ. The heliospheric white-light imagers to be carried on STEREO should extend the ability to estimate solar wind-generation radio network for exploring the 3-dimensional solar wind Future Heliospheric Imaging Radio Network The solar wind is a supersonically-expanding extension of the solar atmosphere into interplanetary space

273

Scientists to use hybrid network  

E-Print Network [OSTI]

"European research and education network operator implements for high-speed infrastructure." (1/2 page)

Willimans, Lara

2007-01-01T23:59:59.000Z

274

Multilevel method for modeling large-scale networks.  

SciTech Connect (OSTI)

Understanding the behavior of real complex networks is of great theoretical and practical significance. It includes developing accurate artificial models whose topological properties are similar to the real networks, generating the artificial networks at different scales under special conditions, investigating a network dynamics, reconstructing missing data, predicting network response, detecting anomalies and other tasks. Network generation, reconstruction, and prediction of its future topology are central issues of this field. In this project, we address the questions related to the understanding of the network modeling, investigating its structure and properties, and generating artificial networks. Most of the modern network generation methods are based either on various random graph models (reinforced by a set of properties such as power law distribution of node degrees, graph diameter, and number of triangles) or on the principle of replicating an existing model with elements of randomization such as R-MAT generator and Kronecker product modeling. Hierarchical models operate at different levels of network hierarchy but with the same finest elements of the network. However, in many cases the methods that include randomization and replication elements on the finest relationships between network nodes and modeling that addresses the problem of preserving a set of simplified properties do not fit accurately enough the real networks. Among the unsatisfactory features are numerically inadequate results, non-stability of algorithms on real (artificial) data, that have been tested on artificial (real) data, and incorrect behavior at different scales. One reason is that randomization and replication of existing structures can create conflicts between fine and coarse scales of the real network geometry. Moreover, the randomization and satisfying of some attribute at the same time can abolish those topological attributes that have been undefined or hidden from researchers. We propose to develop multilevel methods to model complex networks. The key point of the proposed strategy is that it will help to preserve part of the unknown structural attributes by guaranteeing the similar behavior of the real and artificial model on different scales.

Safro, I. M. (Mathematics and Computer Science)

2012-02-24T23:59:59.000Z

275

IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 17, NO. 3, MAY 2006 771 On Algorithmic Rate-Coded AER Generation  

E-Print Network [OSTI]

IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 17, NO. 3, MAY 2006 771 On Algorithmic Rate-Coded AER of frames into the spike event-based representation known as the address-event-rep- resentation (AER). In this paper we concentrate on rate-coded AER. The problem is addressed as an algorithmic problem, in which

Barranco, Bernabe Linares

276

Analysis of the Impact of Balancing Area Cooperation on the Operation of WECC and the Compounding Effect of Wind and Solar Generation  

SciTech Connect (OSTI)

It is the intent of this analysis to examine the operational benefits of increased cooperation between a large number of WECC operating regions.

Jordan, G.; Piwko, D.

2013-02-01T23:59:59.000Z

277

Full expandable model of parallel self-excited induction generators  

E-Print Network [OSTI]

for wind and small hydro power plants [1, 2]. They have advantages over conventional synchronous generators of wind power into power networks, an accurate dynamic model of the overall wind farm system is required to analyse the interaction between the wind farm and the power system. A system of parallel-operated SEIGs

Simões, Marcelo Godoy

278

This paper describes the use of Bayesian networks (BNs) to model the operational risk to information technology (IT)  

E-Print Network [OSTI]

from the financial, rail transport, civil aviation, and nuclear power sectors to sup- port his case failures, slow degrada- tion or collapse of safety procedures, changes in culture and management, lack risk in other industries, especially the Aviation and Nuclear sectors, readily translate to operational

Neil, Martin

279

Exhibit A: Modeling in Support of Two Unit Operating Configurations |  

Broader source: Energy.gov (indexed) [DOE]

Modeling in Support of Two Unit Operating Configurations Modeling in Support of Two Unit Operating Configurations Exhibit A: Modeling in Support of Two Unit Operating Configurations Docket No. EO-05-01: Tables showing modeling of emissions from units of the Mirant Potomac Power Plant. Exhibit A: Modeling in Support of Two Unit Operating Configurations More Documents & Publications Comments on Emergency Order to Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA from the Chesapeake Climate Action Network. Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant Compliance Plan Answer of Potomac Electric Power Company and PJM lnterconnection, L.L.C. to the October 6, 2005 motion filed by the Virginia Department of

280

Collaborative storage management in sensor networks  

Science Journals Connector (OSTI)

In this paper, we consider a class of sensor networks where the data is not required in real-time by an observer; for example: a sensor network monitoring a scientific phenomenon for later play back and analysis. In such networks, the data must be stored in the network. Thus, in addition to battery power, storage is a primary resource; the useful lifetime of the network is constrained by its ability to store the generated data samples. We explore the use of collaborative storage techniques to efficiently manage data in storage constrained sensor networks. The proposed collaborative storage technique takes advantage of spatial correlation among the data collected by nearby sensors to significantly reduce the size of the data near the data sources. In addition, local coordination can be used to adjust the sampling rate to match the required application fidelity. We show that the proposed approach provides significant savings in the size of the stored data vs. local buffering. These savings allow the network to operate for a longer time without exhausting storage space. Furthermore, the savings reduce the amount of data that will eventually be relayed in response to queries or upon eventual collection of the data. In addition, collaborative storage performs load balancing of the available storage space if data generation rates are not uniform across sensors (as would be the case in an event driven sensor network), or if the available storage varies across the network.

Sameer Tilak; Nael B. Abu-Ghazaleh; Wendi Heinzelman

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Sustainable Design and Operation of Cellulosic Bioelectricity Supply Chain Networks with Life Cycle Economic, Environmental, and Social Optimization  

Science Journals Connector (OSTI)

This avoids many of the grid integration challenges associated with intermittent sources such as wind energy and solar energy. ... To address this challenge, we propose a multiobjective, multiperiod mixed-integer linear fractional programming (MILFP) model that captures critical features of the biopower supply chain, including geographically disperse distribution of biomass, seasonality in biomass supply, water content and degradation issues, etc. Levelized cost of electricity is chosen as the economic metric, which is extensively used as the major indicator for the projected economic performance of a renewable energy system. ... Tong, K. L.; Gong, J.; Yue, D. J.; You, F. Q.Stochastic Programming Approach to Optimal Design and Operations of Integrated Hydrocarbon Biofuel and Petroleum Supply Chains ACS Sustainable Chem. ...

Dajun Yue; Maxim Slivinsky; Jason Sumpter; Fengqi You

2014-02-19T23:59:59.000Z

282

Development of Operation System  

Science Journals Connector (OSTI)

We are gradually developing a total hospital information system known as GUNMAS (Gunma University Network for Medical-Hospital- Information Archiving System). an operation system is also being developed as part o...

Seiji Kato M.D.; Yasuharu Kitani M.D.…

1992-01-01T23:59:59.000Z

283

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks  

E-Print Network [OSTI]

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks N. K. Roy, H.roy.h.pota.md.mahmud)@adfa.edu.au Ahstract-This paper proposes a decentralised controller design for doubly-fed induction generators (DFIGs in operating conditions. Index Terms-distributed generation (DG), DFIG, H= norm, linear quadratic Gaussian (LQG

Pota, Himanshu Roy

284

CHANCE CONSTRAINED OPTIMAL POWER FLOW: RISK-AWARE NETWORK CONTROL UNDER UNCERTAINTY  

E-Print Network [OSTI]

in the grid are largely of an engineering nature (i.e. the flywheel-directed generator response used to handle generation (coal, gas and hy- dro plants) over control areas of transmission networks, can result in grid awareness of major uncertainty, in particular fluctuations in renewable output. As a result, grid operation

Bienstock, Daniel

285

A Robust Clustering Algorithm for Mobile Ad Hoc Networks Zhaowen Xing  

E-Print Network [OSTI]

cooperative infrastructures. Thus, each node operates as an autonomous end system and a router for others + (603) 7967-6367 Email: kkphang@um.edu.my Chapter submitted to Handbook of Research on Next Generation Clustering Algorithm for Mobile Ad Hoc Networks ABSTRACT To mimic the operations in fixed infrastructures

Gruenwald, Le

286

An integrated computer-based training simulator for the operative personnel of the 800-MW power-generating unit at the Perm District Power Station  

Science Journals Connector (OSTI)

The integrated computer-based training simulator for an 800-MW power-generating unit is described. Its capacities for training the personnel of the boiler-turbine and chemical departments are shown.

N. Yu. Pevneva; V. N. Piskov; A. N. Zenkov

2007-07-01T23:59:59.000Z

287

Morphological neural networks  

SciTech Connect (OSTI)

The theory of artificial neural networks has been successfully applied to a wide variety of pattern recognition problems. In this theory, the first step in computing the next state of a neuron or in performing the next layer neural network computation involves the linear operation of multiplying neural values by their synaptic strengths and adding the results. Thresholding usually follows the linear operation in order to provide for nonlinearity of the network. In this paper we introduce a novel class of neural networks, called morphological neural networks, in which the operations of multiplication and addition are replaced by addition and maximum (or minimum), respectively. By taking the maximum (or minimum) of sums instead of the sum of products, morphological network computation is nonlinear before thresholding. As a consequence, the properties of morphological neural networks are drastically different than those of traditional neural network models. In this paper we consider some of these differences and provide some particular examples of morphological neural network.

Ritter, G.X.; Sussner, P. [Univ. of Florida, Gainesville, FL (United States)

1996-12-31T23:59:59.000Z

288

Power Control and Transmission Scheduling for Network Utility Maximization in Wireless Networks  

E-Print Network [OSTI]

Power Control and Transmission Scheduling for Network Utility Maximization in Wireless Networks Min power control and transmis- sion scheduling problem in wireless networks with average power constraints. Index Terms--Network utility maximization, power control, transmission scheduling, column generation I

Sharma, Vinod

289

Gamma ray generator  

DOE Patents [OSTI]

An embodiment of a gamma ray generator includes a neutron generator and a moderator. The moderator is coupled to the neutron generator. The moderator includes a neutron capture material. In operation, the neutron generator produces neutrons and the neutron capture material captures at least some of the neutrons to produces gamma rays. An application of the gamma ray generator is as a source of gamma rays for calibration of gamma ray detectors.

Firestone, Richard B; Reijonen, Jani

2014-05-27T23:59:59.000Z

290

Energy Consumption Issues on Mobile Network Systems  

Science Journals Connector (OSTI)

This paper describes energy consumption demographic data in operating real mobile networks. We examine published data from NTT DoCoMo, which is the largest mobile telecommunication operator in Japan and operating nation-wide 3G networks, and identify ... Keywords: Moble Network, Power Consumption, Battery, CO2, Green Network

Minoru Etoh; Tomoyuki Ohya; Yuji Nakayama

2008-07-01T23:59:59.000Z

291

Data and Networking | Argonne Leadership Computing Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Networking Data and Networking Data Storage The ALCF's data storage system is used to retain the data generated by simulations and visualizations. Disk storage provides...

292

Hydroelectric power provides a cheap source of electricity with few carbon emissions. Yet, reservoirs are not operated sustainably, which we define as meeting societal needs for water and power while protecting long-term health of the river ecosystem. Reservoirs that generate hydropower are typically operated with the goal of maximizing energy reve  

SciTech Connect (OSTI)

Hydroelectric power provides a cheap source of electricity with few carbon emissions. Yet, reservoirs are not operated sustainably, which we define as meeting societal needs for water and power while protecting long-term health of the river ecosystem. Reservoirs that generate hydropower are typically operated with the goal of maximizing energy revenue, while meeting other legal water requirements. Reservoir optimization schemes used in practice do not seek flow regimes that maximize aquatic ecosystem health. Here, we review optimization studies that considered environmental goals in one of three approaches. The first approach seeks flow regimes that maximize hydropower generation, while satisfying legal requirements, including environmental (or minimum) flows. Solutions from this approach are often used in practice to operate hydropower projects. In the second approach, flow releases from a dam are timed to meet water quality constraints on dissolved oxygen (DO), temperature and nutrients. In the third approach, flow releases are timed to improve the health of fish populations. We conclude by suggesting three steps for bringing multi-objective reservoir operation closer to the goal of ecological sustainability: (1) conduct research to identify which features of flow variation are essential for river health and to quantify these relationships, (2) develop valuation methods to assess the total value of river health and (3) develop optimal control softwares that combine water balance modelling with models that predict ecosystem responses to flow.

Jager, Yetta [ORNL; Smith, Brennan T [ORNL

2008-02-01T23:59:59.000Z

293

Generating secret in a network  

E-Print Network [OSTI]

This monograph studies the theory of information through the multiuser secret key agreement problem. A general notion of mutual dependence is established for the secrecy capacity, as a natural generalization of Shannon's ...

Chan, Chung, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

294

The Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Network Engineering Services The Network Network Maps Network Facts & Stats Connected Sites Peering Connections ESnet Site Availabiliy OSCARS Fasterdata IPv6 Network Network...

295

Environmental Impact Statement (EIS) for the Transfer of the Heat Source / Radioisotope Themoelectric Generator Assembly and Test Operations From the Mound Site  

Broader source: Energy.gov (indexed) [DOE]

031 031 Federal Register / Vol. 63, No. 191 / Friday, October 2, 1998 / Notices SUPPLEMENTARY INFORMATION: The package listing contains the following information: (1) Title of the information collection package; (2) current OMB control number; (3) type of respondents; (4) estimated number of responses annually; (5) estimated total burden hours, annually, including recordkeeping hours required to provide the information; (6) purpose; and (7) number of collections. Package Title: Legal. Current OMB No.: 1910-0800. Type of Respondents: DOE management and operating contractors, and offsite contractors. Estimated Number of Responses: 2,719. Estimated Total Burden Hours: 21,052. Purpose: This information is required by the Department to ensure that legal resources and requirements are

296

System and method for networking electrochemical devices  

DOE Patents [OSTI]

An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. The improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

Williams, Mark C. (Morgantown, WV); Wimer, John G. (Morgantown, WV); Archer, David H. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

297

Analysis of accident sequences and source terms at treatment and storage facilities for waste generated by US Department of Energy waste management operations  

SciTech Connect (OSTI)

This report documents the methodology, computational framework, and results of facility accident analyses performed for the US Department of Energy (DOE) Waste Management Programmatic Environmental Impact Statement (WM PEIS). The accident sequences potentially important to human health risk are specified, their frequencies assessed, and the resultant radiological and chemical source terms evaluated. A personal-computer-based computational framework and database have been developed that provide these results as input to the WM PEIS for the calculation of human health risk impacts. The WM PEIS addresses management of five waste streams in the DOE complex: low-level waste (LLW), hazardous waste (HW), high-level waste (HLW), low-level mixed waste (LLMW), and transuranic waste (TRUW). Currently projected waste generation rates, storage inventories, and treatment process throughputs have been calculated for each of the waste streams. This report summarizes the accident analyses and aggregates the key results for each of the waste streams. Source terms are estimated, and results are presented for each of the major DOE sites and facilities by WM PEIS alternative for each waste stream. Key assumptions in the development of the source terms are identified. The appendices identify the potential atmospheric release of each toxic chemical or radionuclide for each accident scenario studied. They also discuss specific accident analysis data and guidance used or consulted in this report.

Mueller, C.; Nabelssi, B.; Roglans-Ribas, J.; Folga, S.; Policastro, A.; Freeman, W.; Jackson, R.; Mishima, J.; Turner, S.

1996-12-01T23:59:59.000Z

298

A franchising of retail operations : the case of the United States Postal Service building a retail network for the 21st century  

E-Print Network [OSTI]

This thesis is about the effects of changing customer preferences on the United States Postal Service's retail network and offers a process for wider adoption of its current retail partnership program. The Contract Postal ...

Sigmon, Kelly M. (Kelly Marie Berg)

2010-01-01T23:59:59.000Z

299

Feature Selection for Generator Excitation Neurocontroller Development Using Filter Technique  

E-Print Network [OSTI]

Essentially, motive behind using control system is to generate suitable control signal for yielding desired response of a physical process. Control of synchronous generator has always remained very critical in power system operation and control. For certain well known reasons power generators are normally operated well below their steady state stability limit. This raises demand for efficient and fast controllers. Artificial intelligence has been reported to give revolutionary outcomes in the field of control engineering. Artificial Neural Network (ANN), a branch of artificial intelligence has been used for nonlinear and adaptive control, utilizing its inherent observability. The overall performance of neurocontroller is dependent upon input features too. Selecting optimum features to train a neurocontroller optimally is very critical. Both quality and size of data are of equal importance for better performance. In this work filter technique is employed to select independent factors for ANN training.

Abro, Abdul Ghani

2012-01-01T23:59:59.000Z

300

Performance monitoring in transparent optical networks using self-monitoring  

E-Print Network [OSTI]

the capital expenditure (CAPEX) and the operating expenditure (OPEX) of the network while enhancing its

Kolner, Brian H.

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Operations Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Standards BPA Operations Information (OPI) Transmission Services operates and plans for regional and national system needs. Transmission Services coordinates system operation and...

302

H2 production based on RDG and assisted by a weak grid. System topology, operation and control  

Science Journals Connector (OSTI)

The Renewable Distributed Generation (RDG), such as production of electricity in the vicinity of the load, it is particularly beneficial when the distribution network is "weak" facing specific demands, as in hydrogen production systems connected to rural electrification networks. In these areas, the wind resource may be suitable for this type of generation. This work proposes the topology and the operation and control strategy for a hydrogen production station, "assisted" by a weak AC grid and "powered" by a variable speed wind turbine based on a three-phase double stator induction machine. The wind energy conversion is optimized through adequate control of the generator. The electrolyzer current is regulated for the maximum utilization of the generated power. The high-speed power fluctuations by turbulence are compensated through a controlled energy storage system based on a flywheel. In addition, the system configuration, its operation mode and control, and simulation results are presented.

P.A. Camocardi; G.M. Toccaceli; P.E. Battaiotto; M.G. Cendoya

2012-01-01T23:59:59.000Z

303

Illinois Nuclear Profile - Braidwood Generation Station  

U.S. Energy Information Administration (EIA) Indexed Site

Braidwood Generation Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

304

Illinois Nuclear Profile - Byron Generating Station  

U.S. Energy Information Administration (EIA) Indexed Site

Byron Generating Station" ,"Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

305

A Web-based Application to Manage Carbon Cycle Network Operations P. Lang1, K. Masarie1, M. Heller1,2 and D. Chao1,2  

E-Print Network [OSTI]

collection details are entered into the database via OM either manually (network flasks) or electronically and a continuous supply of flasks and PFPs are critical for uninterrupted long- term monitoring. The shipping be readily searched which is helpful when diagnosing problems that other ESRL researchers may have already

306

Diophantine Generation,  

E-Print Network [OSTI]

Diophantine Generation, Horizontal and Vertical Problems, and the Weak Vertical Method Alexandra Shlapentokh Diophantine Sets, Definitions and Generation Diophantine Sets Diophantine Generation Properties of Diophantine Generation Diophantine Family of Z Diophantine Family of a Polynomial Ring Going Down Horizontal

Shlapentokh, Alexandra

307

Multilayer Traffic Engineering for IP Over WDM Networks Based on Bayesian Decision Theory  

Science Journals Connector (OSTI)

Network operators are migrating their networks to IP over WDM architectures. In such multilayer networks, it is necessary to define mechanisms that efficiently use the resources...

López, Víctor; Hernández, José Alberto; González de Dios, Óscar; Fernández Palacios, Juan; Aracil, Javier

2010-01-01T23:59:59.000Z

308

Performance Evaluation of Multi-Layer Traffic Engineering Enabled IP-over-ION Networks  

Science Journals Connector (OSTI)

Recently, network operators started implementing traffic engineering (TE) techniques in their network. These ... layer. The evolution towards intelligent optical networks (IONs) allows further increasing the impr...

Qiang Yan; Didier Colle; Sophie De Maesschalck…

2005-05-01T23:59:59.000Z

309

Fig. 5. The influence of the network cross-traffic on the ability of the SANET to stabilize the generator's voltage  

E-Print Network [OSTI]

, Denver, 2003 3. Modelica. http://www.modelica.org/ 4.The Network Simulator (ns-2). http simulator with a full-fledged dynamical systems simulator. Examples: ADEVS/ns-2 integrated tool Modelica/ns-2 integrated tool Modelica/ns-2 INTEGRATED TOOL Modelica [3] A modeling language for large

Branicky, Michael S.

310

Safe Operation of Backup Power Generators (Spanish)  

E-Print Network [OSTI]

de llenar el tanque de combustible. Si se derrama gasolina sobre las partes calientes del motor, podr?a causar un incendio. ? Siempre guarde un extintor de fuego cerca del generador. Otras precauciones de seguridad ? Siempre revise el generador... partes calientes del motor. ? Mantenga a los ni?os alejados del generador y de los contenedores de almacenamiento de combustible. Producido por Comunicaciones Agr?colas, El Sistema Universitario Texas A&M Se pueden encontrar publicaciones producidas...

Smith, David

2006-04-19T23:59:59.000Z

311

Thailand gas project now operational  

SciTech Connect (OSTI)

Now operational, Phase 1 of Thailand's first major natural gas system comprises one of the world's longest (264 miles) offshore gas lines. Built for the Petroleum Authority of Thailand (PTT), this system delivers gas from the Erawan field in the Gulf of Thailand to two electrical power plants near Bangkok, operated by the Electricity Generating Authority of Thailand (EGAT). The project required laying about 360 miles of pipeline, 34-in., 0.625 in.-thick API-5LX-60 pipe offshore and 28-in., 0.406 in.-thick API-5LX-60 onshore. The offshore pipe received a coal-tar coating, a 3.5-5.0 in. concrete coating, and zinc sacrificial-anode bracelets. The onshore line was coated with the same coal-tar enamel and, where necessary, with concrete up to 4.5 in. thick. Because EGAT's two power plants are the system's only customers, no more pipeline will be constructed until deliveries, currently averaging about 100 million CF/day, reach the 250 million CF/day level. The project's second phase will include additional pipelines as well as an onshore distribution network to industrial customers.

Horner, C.

1982-08-01T23:59:59.000Z

312

Communication in Home Area Networks  

E-Print Network [OSTI]

line from the generator to substation while MV isdistribution network between substation and user end. A LVa number of routers/substations and thousands of sensor

Wang, Yubo

2012-01-01T23:59:59.000Z

313

4th Generation ECR Ion Sources  

E-Print Network [OSTI]

4th Generation ECR Ion Sources Claude M Lyneis, D. Leitner,to developing a 4 th generation ECR ion source with an RFover current 3 rd generation ECR ion sources, which operate

Lyneis, Claude M.

2010-01-01T23:59:59.000Z

314

Co-generation at CERN Beneficial or not?  

E-Print Network [OSTI]

A co-generation plant for the combined production of electricity and heat has recently been installed on the CERN Meyrin site. This plant consists of: a gas turbine generator set (GT-set), a heat recovery boiler for the connection to the CERN primary heating network, as well as various components for the integration on site. A feasibility study was carried out and based on the argument that the combined use of natural gas -available anyhow for heating purposes- gives an attractively high total efficiency, which will, in a period of time, pay off the investment. This report will explain and update the calculation model, thereby confirming the benefits of the project. The results from the commissioning tests will be taken into account, as well as the benefits to be realized under the condition that the plant can operate undisturbed by technical setbacks which, incidentally, has not been entirely avoided during the first year of test-run and operation.

Wilhelmsson, M

1998-01-01T23:59:59.000Z

315

Variable susceptance excitation control for dynamic performance improvement of a stand-alone wind turbine induction generator system  

Science Journals Connector (OSTI)

Isolated wind farms employ simple squirrel cage induction generators driven by variable speed wind turbines. Lacking control capability, such generation can contribute very little to network support. Wind turbines mostly do not take part in voltage and frequency control and if a disturbance occurs, the turbines may be disconnected and reconnected when normal operation has been resumed. From operation viewpoint, this is definitely not acceptable. A primary reason for the rigidity of operation is the lack of excitation adaptation under variable wind conditions. This article proposes incorporation of a variable capacitance controller at the generator terminal which will automatically adjust the needed excitation. Further improvement of transient profile of the stand-alone wind turbine generator has been proposed through inclusion of additional stabilising control. Simulation studies show that the proposed excitation controller with additional PID circuit provides very good transient profile following reasonable input torque variations.

A.H.M.A. Rahim; M. Ahsanul Alam

2009-01-01T23:59:59.000Z

316

Network Connections  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Connecting to NERSC Using X Windows Connecting to NERSC with NX Transferring Data Network Performance Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » Network Connections Network Connections NERSC's resources can be accessed using SSH and related tools, grid tools, and via the web. This section explains how to connect to NERSC

317

Neural Control of the Self-Excited Induction Generator for Variable-Speed Wind Turbine Generation  

Science Journals Connector (OSTI)

In this paper, a steady state and transient analysis of a stand alone Self Excited Induction Generator (SEIG) is presented. The conventional dynamic ... Artificial Neural Network (ANN) to model the induction generator

S. Zouggar; Y. Zidani; M. L. ELhafyani…

2012-01-01T23:59:59.000Z

318

Robust Offshore Networks for Oil and Gas Facilities :.  

E-Print Network [OSTI]

??Offshore Communication Networks utilize multiple of communication technologies to eradicate any possibilities of failures, when the network is operational. Offshore Oil and Gas platforms and… (more)

Maheshwari, D.

2010-01-01T23:59:59.000Z

319

Network Maps  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Network R&D Overview Experimental Network Testbeds Performance (perfSONAR) Software & Tools...

320

1. Generation 1 1. Generation  

E-Print Network [OSTI]

1. Generation 1 _________________________________________________________________________ 1. Generation Sound and vibrations or, in more general terms, oscillations of matter (solids or fluids) are generated in many different dynamic processes. The basic mechanisms which underlie these oscillations

Berlin,Technische Universität

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Strategic sustainability and operational efficiency dilemma of data centres  

Science Journals Connector (OSTI)

The core discussion is based on three large service companies that were analysed from a case study-perspective in terms of green energy options for its data centres, especially maintenance efforts to increase efficiency of their data centres while maintaining required levels of reliability and cooling. The components of operational effectiveness and strategy broke down into many parts. Following strategic initiatives and balancing the operational effectiveness of the firms studied, it was suggested that these trends should generate vastly different sources of competitive advantage like networking economies of scale, new opportunities for the purely physical business to a more green-based IT to eliminate distribution channels that only provide information, changes in brand identity, and reduced operating costs.

Alan D. Smith

2011-01-01T23:59:59.000Z

322

CERTS 2012 Program Review - NASPI Technical Support for OITT & Operations of NERC-TVA NASPI Synchrophasor Network & RTDMS Installation - Jim Dyer, EPG  

Broader source: Energy.gov (indexed) [DOE]

SynchroPhasor Initiative SynchroPhasor Initiative (NASPI) Event Analysis Reports Jim Dyer dyer@ElectricPowerGroup.com June 12, 2012 Washington, DC DOE - CERTS Transmission Reliability R&D Internal Program Review Agenda  Technical Support for Operations of Real Time Dynamics Monitoring System (RTDMS) for NASPI  Support of the RTDMS Users' Group  Support of NASPI Operations Implementation Task Team (OITT) Page 1  Built upon GRID-3P Platform, U.S. Patent 7,233,843, and U.S. Patent 8,060259. All rights reserved. NASPI-RTDMS Support Page 2  Objective - Enhance, maintain and support the RTDMS application, server, data base and client. Support users needs and provide an application that converts phasor date into useful information

323

Agent based modeling of energy networks  

Science Journals Connector (OSTI)

Abstract Attempts to model any present or future power grid face a huge challenge because a power grid is a complex system, with feedback and multi-agent behaviors, integrated by generation, distribution, storage and consumption systems, using various control and automation computing systems to manage electricity flows. Our approach to modeling is to build upon an established model of the low voltage electricity network which is tested and proven, by extending it to a generalized energy model. But, in order to address the crucial issues of energy efficiency, additional processes like energy conversion and storage, and further energy carriers, such as gas, heat, etc., besides the traditional electrical one, must be considered. Therefore a more powerful model, provided with enhanced nodes or conversion points, able to deal with multidimensional flows, is being required. This article addresses the issue of modeling a local multi-carrier energy network. This problem can be considered as an extension of modeling a low voltage distribution network located at some urban or rural geographic area. But instead of using an external power flow analysis package to do the power flow calculations, as used in electric networks, in this work we integrate a multiagent algorithm to perform the task, in a concurrent way to the other simulation tasks, and not only for the electric fluid but also for a number of additional energy carriers. As the model is mainly focused in system operation, generation and load models are not developed.

José María Gonzalez de Durana; Oscar Barambones; Enrique Kremers; Liz Varga

2014-01-01T23:59:59.000Z

324

Using Backup Generators: Choosing the Right Backup Generator - Business  

Broader source: Energy.gov (indexed) [DOE]

Choosing the Right Backup Generator Choosing the Right Backup Generator - Business Owners Using Backup Generators: Choosing the Right Backup Generator - Business Owners Using Backup Generators: Choosing the Right Backup Generator - Business Owners Identify essential systems and equipment-What do you need to keep your business operating? These may include heating, ventilation, and air conditioning systems; industrial equipment and major appliances, such as refrigerators and freezers; lights (interior and exterior), computers, and other office equipment; pumps, including sump pumps, sprinkler system pumps, and well water pumps; and alarm systems. Some of these systems and equipment may have to operate continuously, while others may be needed only during normal business hours. Choose the generator's fuel source-Backup generators are

325

Siemens Power Generation, Inc.  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2005 Pittsburgh Coal Conference 2005 Pittsburgh Coal Conference Siemens Power Generation, Inc. Page 1 of 10 © Siemens Power Generation, Inc., All Rights Reserved Development of a Catalytic Combustor for Fuel Flexible Turbines W. R. Laster Siemens Westinghouse Power Corporation Abstract Siemens has been working on a catalytic combustor for natural gas operation for several years using the Rich Catalytic Lean (RCL TM ) design. The design has been shown to produce low NOx emissions on natural gas operation. By operating the catalyst section fuel rich, the design shows considerable promise for robust operation over a wide range of fuel compositions including syngas. Under the sponsorship of the U. S. Department of Energy' s National Energy Technology Laboratory, Siemens Westinghouse is conducting a three year

326

Design and Control of Next Generation Distribution Frames  

E-Print Network [OSTI]

-peak hours, adopted by network operators to reduce the energy consumption in the access network (and for the number of required ports (sometimes very large, exceeding 100,000), and rearrangeable multistage networks and current needs to reduce the energy con- sumption require now to move from slow human operations to almost

Giaccone, Paolo

327

Advanced Network Toolkit for Assessments  

Broader source: Energy.gov (indexed) [DOE]

Network Toolkit for Assessments Network Toolkit for Assessments and Remote Mapping (ANTFARM) Uses existing information to passively map control systems networks and identify cyber security perimeters Control systems operators require a map of their energy control system network in order to identify its electronic security perimeter, critical to meeting the North American Electric Reliability Corporation's (NERC) Critical Infrastructure Protection (CIP) standards. However, purchasing active, online scanning tools specifically for network mapping can be costly, and these tools can disrupt control system function, causing system latency and possibly affecting power supply. The ANTFARM software tool enables system operators to remotely and

328

Distributed Generation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Untapped Value of Backup Generation Untapped Value of Backup Generation While new guidelines and regulations such as IEEE (Institute of Electrical and Electronics Engineers) 1547 have come a long way in addressing interconnection standards for distributed generation, utilities have largely overlooked the untapped potential of these resources. Under certain conditions, these units (primarily backup generators) represent a significant source of power that can deliver utility services at lower costs than traditional centralized solutions. These backup generators exist today in large numbers and provide utilities with another option to reduce peak load, relieve transmission congestion, and improve power reliability. Backup generation is widely deployed across the United States. Carnegie Mellon's Electricity

329

OPERATIONS (OPS)  

Broader source: Energy.gov (indexed) [DOE]

OPS) OPS) OBJECTIVE OPS.1 The formality and discipline of operations is adequate to conduct work safely and programs are in place to maintain this formality and discipline. (CR 13) Scope: The Conduct of Operations Program was evaluated during the recent KE Basin FTS ORR and was found to be adequately implemented. Based on this result and the subsequent program enhancements, the scope of the review is to be limited to the SWS operating and maintenance evolutions. Criteria * Programmatic elements of conduct of operations are in place for SWS operations. (DOE Order 5480.19) * The SWS operations personnel adequately demonstrate the principles of conduct of operations requirements during the shift performance period. (DOE Order 5480.19)

330

Wind power generating system  

SciTech Connect (OSTI)

Normally feathered propeller blades of a wind power generating system unfeather in response to the actuation of a power cylinder that responds to actuating signals. Once operational, the propellers generate power over a large range of wind velocities. A maximum power generation design point signals a feather response of the propellers so that once the design point is reached no increase in power results, but the system still generates power. At wind speeds below this maximum point, propeller speed and power output optimize to preset values. The propellers drive a positive displacement pump that in turn drives a positive displacement motor of the swash plate type. The displacement of the motor varies depending on the load on the system, with increasing displacement resulting in increasing propeller speeds, and the converse. In the event of dangerous but not clandestine problems developing in the system, a control circuit dumps hydraulic pressure from the unfeathering cylinder resulting in a predetermined, lower operating pressure produced by the pump. In the event that a problem of potentially cladestine consequence arises, the propeller unfeathering cylinder immediately unloads. Upon startup, a bypass around the motor is blocked, applying a pressure across the motor. The motor drives the generator until the generator reaches a predetermined speed whereupon the generator is placed in circuit with a utility grid and permitted to motor up to synchronous speed.

Schachle, Ch.; Schachle, E. C.; Schachle, J. R.; Schachle, P. J.

1985-03-12T23:59:59.000Z

331

How to Validate Traffic Generators? Sandor Molnar1  

E-Print Network [OSTI]

How to Validate Traffic Generators? S�andor Moln�ar1 , P�eter Megyesi High Speed Networks Lab: geza.szabo@ericsson.com Abstract--Network traffic generators are widely used in net- working research to validate these traffic generators and which metric to choose for validation purpose. This situation makes

Molnár, Sándor

332

The Clouds Distributed Operating System * Partha Dasgupta  

E-Print Network [OSTI]

The Clouds Distributed Operating System * Partha Dasgupta Dept. of Computer Science and Engg Ramachandran. College of Computing Georgia Tech, Atlanta, GA 30332 Keywords: Distributed Operating Systems operating system that runs on general purpose computers connected via a local­area network. The system

Yeom, Heon Young

333

Review of grid connection requirements for generation assets in weak power grids  

Science Journals Connector (OSTI)

Abstract The integration of variable energy sources in weak power grids poses many technical and economic challenges. Both aspects have an impact on the development of grid codes, that is worth analysing. Grid codes shall be adapted to technical constraints in the corresponding power grid, such as the network strength and the characteristics of generation technologies. This paper reviews and compares technical requirements imposed on to generation assets in countries with very distinct characteristics, in order to analyse the influence of weakness and isolation of a power grid on the interconnection conditions imposed by system operators to grid users. Current and future regulation aspects are covered.

Agurtzane Etxegarai; Pablo Eguia; Esther Torres; Araitz Iturregi; Victor Valverde

2015-01-01T23:59:59.000Z

334

Operations & Maintenance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Contact Information Transmission Planning Western OATT Revision Maintenance Services Meter policy (pdf) Meter application agreement Behind the Meter Generation policy (doc)...

335

Generation Planning (pbl/generation)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Generation Planning Thumbnail image of BPA White Book BPA White Book (1998 - 2011) Draft Dry...

336

BER Science Network Requirements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Network Network Requirements Report of the Biological and Environmental Research Network Requirements Workshop Conducted July 26 and 27, 2007 BER Science Network Requirements Workshop Biological and Environmental Research Program Office, DOE Office of Science Energy Sciences Network Bethesda, MD - July 26 and 27, 2007 ESnet is funded by the US Dept. of Energy, Office of Science, Advanced Scientific Computing Research (ASCR) program. Dan Hitchcock is the ESnet Program Manager. ESnet is operated by Lawrence Berkeley National Laboratory, which is operated by the University of California for the US Department of Energy under contract DE-AC02-05CH11231. This work was supported by the Directors of the Office of Science, Office of Advanced Scientific Computing Research, Facilities Division, and the Office of Biological &

337

SPEAR Operations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interface 1113 N. Kurita J. Langton Vacuum TSP's 1120 J. Corbett A. Terebilo MATLAB Applications - Basics 1121 F. Rafael Booster Kicker Upgrade, Operation Manual 1121...

338

operations center  

National Nuclear Security Administration (NNSA)

1%2A en Operations Center http:nnsa.energy.govaboutusourprogramsemergencyoperationscounterterrorismoperationscenter

...

339

Security constrained generation scheduling for grids incorporating wind, photovoltaic and thermal power  

Science Journals Connector (OSTI)

Abstract In this paper, security constrained generation scheduling (SCGS) problem for a grid incorporating thermal, wind and photovoltaic (PV) units is formulated. The formulation takes into account the stochastic nature of both wind and PV power output and imbalance charges due to mismatch between the actual and scheduled wind and PV power outputs. A hybrid technique in which the basic elements are a genetic algorithm (GA) with artificial neural network (ANN) and a priority list (PL) is used to minimize the total operating costs while satisfying all operational constraints considering both conventional and renewable energy generators. Numerical results are reported and discussed based on the simulation performed on the IEEE 24-bus reliability test system. The results demonstrate the efficiency of the proposed approach to reduce the total production cost for real time operation. Moreover, the results verified that the proposed approach can be applied to different problem dimensions and can score more favorably compared with analytical techniques.

Azza A. ElDesouky

2014-01-01T23:59:59.000Z

340

Nuclear reactor characteristics and operational history  

Gasoline and Diesel Fuel Update (EIA)

1. Capacity and Generation, Table 3. Characteristics and Operational History 1. Capacity and Generation, Table 3. Characteristics and Operational History Table 2. U.S. Nuclear Reactor Ownership Data PDF XLS Plant/Reactor Name Generator ID Utility Name - Operator Owner Name % Owned Arkansas Nuclear One 1 Entergy Arkansas Inc Entergy Arkansas Inc 100 Arkansas Nuclear One 2 Entergy Arkansas Inc Entergy Arkansas Inc 100 Beaver Valley 1 FirstEnergy Nuclear Operating Company FirstEnergy Nuclear Generation Corp 100 Beaver Valley 2 FirstEnergy Nuclear Operating Company FirstEnergy Nuclear Generation Corp 100 Braidwood Generation Station 1 Exelon Nuclear Exelon Nuclear 100 Braidwood Generation Station 2 Exelon Nuclear Exelon Nuclear 100 Browns Ferry 1 Tennessee Valley Authority Tennessee Valley Authority 100

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Washington DC Reliability Requirements and the Need to Operate...  

Broader source: Energy.gov (indexed) [DOE]

River Generating Station and Proposed Mirant Compliance Plan Comments by Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. Special...

342

Induction generator voltage improvement using a new control strategy for turbo-expander driving systems  

Science Journals Connector (OSTI)

Abstract Turbo-expanders are relatively new sources of dispersed generation which are used to drive the electrical generators. The conventional pressure regulating valves are replaced by these devices in the gas pressure reduction station. Connecting the dispersed generation to the distribution networks especially for squirrel cage induction generators, may result in some power quality problems. These problems can be obviated using special devices in electrical networks or modifying the control system of the prime mover system in mechanical parts. In this paper, it is focused on the Point of Common Coupling (PCC) voltage where a turbo-expander driven induction generator is connected. A new control strategy based on fuzzy controlled PID is considered for the mechanical part of the turbo-expander nozzle system. The results show a better control of turbo-expander output power in a linear form over the full range of operating points. The other purpose of the control system modification is to improve the power quality and stabilize the PCC voltage in different operating point conditions.

Mehdi Taleshian Jelodar; Hasan Rastegar; Mohammad Pichan

2015-01-01T23:59:59.000Z

343

Design and Implementation of Operation Energy Management System Based on AJAX-SSH2  

Science Journals Connector (OSTI)

With the development of communication network construction, the operation consumption of communications industry grows significantly in ... Therefore, it is necessary to develop an operation energy management system

Ye Yuan; Ke-Bin Jia…

2014-01-01T23:59:59.000Z

344

Comments by Mary Celeste Harris on the Emergency Operation of...  

Broader source: Energy.gov (indexed) [DOE]

Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. Comments by Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River...

345

California Nuclear Profile - San Onofre Nuclear Generating Station  

U.S. Energy Information Administration (EIA) Indexed Site

San Onofre Nuclear Generating Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

346

New Jersey Nuclear Profile - PSEG Hope Creek Generating Station  

U.S. Energy Information Administration (EIA) Indexed Site

PSEG Hope Creek Generating Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

347

New Jersey Nuclear Profile - PSEG Salem Generating Station  

U.S. Energy Information Administration (EIA) Indexed Site

PSEG Salem Generating Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

348

Stratified vapor generator  

DOE Patents [OSTI]

A stratified vapor generator (110) comprises a first heating section (H.sub.1) and a second heating section (H.sub.2). The first and second heating sections (H.sub.1, H.sub.2) are arranged so that the inlet of the second heating section (H.sub.2) is operatively associated with the outlet of the first heating section (H.sub.1). A moisture separator (126) having a vapor outlet (164) and a liquid outlet (144) is operatively associated with the outlet (124) of the second heating section (H.sub.2). A cooling section (C.sub.1) is operatively associated with the liquid outlet (144) of the moisture separator (126) and includes an outlet that is operatively associated with the inlet of the second heating section (H.sub.2).

Bharathan, Desikan (Lakewood, CO); Hassani, Vahab (Golden, CO)

2008-05-20T23:59:59.000Z

349

Photopolymerization in Microfluidic Gradient Generators: Microscale  

E-Print Network [OSTI]

-compliance profiles that are tunable on the micro- scale. The most straightforward way to create substrates with vari through the development of microfluidic networks,[7,8] with which one can easily generate solution (e microscale gradients with microfluidic networks, and a recent study that demon- strated

350

Method for protecting an electric generator  

DOE Patents [OSTI]

A method for protecting an electrical generator which includes providing an electrical generator which is normally synchronously operated with an electrical power grid; providing a synchronizing signal from the electrical generator; establishing a reference signal; and electrically isolating the electrical generator from the electrical power grid if the synchronizing signal is not in phase with the reference signal.

Kuehnle, Barry W. (Ammon, ID); Roberts, Jeffrey B. (Ammon, ID); Folkers, Ralph W. (Ammon, ID)

2008-11-18T23:59:59.000Z

351

Design operators  

E-Print Network [OSTI]

Design operators is a thesis that investigates the nature and characteristics of the design process by examining the interaction of computation with architectural design. The effects of the introduction of these media in ...

Dritsas, Stylianos, 1978-

2004-01-01T23:59:59.000Z

352

Business Operations  

Office of Energy Efficiency and Renewable Energy (EERE)

The Office of Business Operations is the central organization for all Office of Energy Efficiency and Renewable Energy (EERE) business products, processes, and systems. The three main offices of...

353

Operating Costs  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This chapter is focused on capital costs for conventional construction and environmental restoration and waste management projects and examines operating cost estimates to verify that all elements of the project have been considered and properly estimated.

1997-03-28T23:59:59.000Z

354

Analysis of TPV Network Losses (a Presentation)  

SciTech Connect (OSTI)

This talk focuses on the theoretical analysis of electrical losses associated with electrically networking large numbers of TPV cells to produce high power TPV power generators.

DM DePoy; MW Dashiell; DD Rahner; LR Danielson; JE Oppenlander; JL Vell; RJ Wehrer

2004-12-08T23:59:59.000Z

355

Linear PM Generator for Wave Energy Conversion.  

E-Print Network [OSTI]

??The main objective of this thesis is to design a selected version of linear PM generator and to determine the electromechanical characteristics at variable operating… (more)

Parthasarathy, Rajkumar

2012-01-01T23:59:59.000Z

356

An overview on doubly fed induction generators? controls and contributions to wind based electricity generation  

Science Journals Connector (OSTI)

Abstract Undoubtedly, energy has a significant role in economic growth and technical developments. Renewable energy resources are becoming more important in recent years due to their tremendous contributions to the independence of power generation industry from traditional fossil energy resources. Wind energy has been outstanding among renewable energy resources since continuous harvestable potential on the earth is approximately around 106 MW. Concerning the variable nature of wind energy, the variable speed machines, especially doubly fed induction generators (DFIG) are one of the considerations for wind energy conversion systems (WECS). Their implementation in renewable energy conversion systems is dramatically increasing due to their numerous advantages such as low cost and small size, the elimination of external DC source, the ability to produce maximum power under various wind and rotational speeds, the capability of controlling active and reactive power, and the opportunity to employ cheaper and smaller convertors and controllers. This paper is an extensive review of researches in the past 30 years on DFIG. The study starts with describing general perspective on wind energy and commonly used generators in wind conversion. Then it presents more details on \\{DFIGs\\} operational modes, utilizations, their modeling and simulation. It is followed by DFIG control methods and overviews of different employed electrical and mechanical controlling methods. Finally the review on the mutual impact of DFIG on power networks and vice versa, including wind uncertainty, power and frequency stability, power and voltage quality, operation under steady state, dynamic and fault conditions, and protections is given. Based on the review DFIG has advantages in terms of electrical, mechanical, and economic perspectives. It can be concluded that the DFIG has the most promising future for \\{WECSs\\} in power generation to complement the conventional systems.

Abdullah Asuhaimi B. Mohd Zin; Mahmoud Pesaran H.A.; Azhar B. Khairuddin; Leila Jahanshaloo; Omid Shariati

2013-01-01T23:59:59.000Z

357

Thermoelectric Generators 1. Thermoelectric generator  

E-Print Network [OSTI]

. Cold Hot I - -- - - - - -- Figure 1 Electron concentration in a thermoelectric material. #12;2 A large1 Thermoelectric Generators HoSung Lee 1. Thermoelectric generator 1.1 Basic Equations In 1821 on the direction of current and material [3]. This is called the Thomson effect (or Thomson heat). These three

Lee, Ho Sung

358

Regenerator Location Problem in Flexible Optical Networks  

E-Print Network [OSTI]

Using real world network topologies, we conduct extensive numerical .... it to the operations research literature, proving its NP-completeness and showing.

2014-11-22T23:59:59.000Z

359

Energy Audit of a Water System Network  

Science Journals Connector (OSTI)

The energy audit of water networks has to be focused... i - Operational schedule of pumping stations and available storage to atte...

Edmundo Koelle

1995-01-01T23:59:59.000Z

360

Quasiseparable Generators  

Science Journals Connector (OSTI)

It is clear from the preceding chapter that any matrix has quasiseparable representations. By padding given quasiseparable generators with zero matrices of large sizes one ... large orders. However, one is lookin...

Yuli Eidelman; Israel Gohberg…

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

BOREAS Operations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Study Area Operations/Thompson Airport (NSA-Ops) Study Area Operations/Thompson Airport (NSA-Ops) NSA Operations (NSA-Ops) The Keewatin Air Hanger: site of BOREAS Ops 1994 Dr. Piers Sellers working in Ops, 1994 BOREAS "Air Force" The NASA C-130 The University of Wyoming King Air The NASA Helicopter The NRC Twin Otter The NCAR Electra The Ontario Chieftain Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help |

362

SSA Operations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Area Operations (SSA-Ops) Area Operations (SSA-Ops) "BOREAS Ops" was located at the Snodrifters Lodge, in Candle Lake, Saskatchewan. Radiosonde balloon launch at Ops The NASA Helicopter lands at Ops A meeting at the Snodrifter's Lodge Release of a radiosonde at the SSA operations center in Candle Lake. Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help | User Services - Tel: +1 (865) 241-3952 or E-mail: uso@daac.ornl.gov

363

Substation Operation  

Science Journals Connector (OSTI)

... THIS book is intended to help the workman to understand the principles of substation operation. It is a good attempt at giving somewhat advanced technical knowledge in such ... ." We are told not to use water to put out a fire at a substation before the station has been made completely " dead." The reason given for this ...

1925-08-01T23:59:59.000Z

364

Collective network routing  

DOE Patents [OSTI]

Disclosed are a unified method and apparatus to classify, route, and process injected data packets into a network so as to belong to a plurality of logical networks, each implementing a specific flow of data on top of a common physical network. The method allows to locally identify collectives of packets for local processing, such as the computation of the sum, difference, maximum, minimum, or other logical operations among the identified packet collective. Packets are injected together with a class-attribute and an opcode attribute. Network routers, employing the described method, use the packet attributes to look-up the class-specific route information from a local route table, which contains the local incoming and outgoing directions as part of the specifically implemented global data flow of the particular virtual network.

Hoenicke, Dirk

2014-12-02T23:59:59.000Z

365

Energy Management in Wireless Sensor Network Operations  

E-Print Network [OSTI]

sense to replace a node with a new node with a higher amount of energy. If node-i is replaced on day-t, let wti be the additional amount of energy in the incoming new node over the outgoing node (i.e. the energy stored in the new node is eti + w t i... + w t i D X j2Vi ETij r t ij + E R X j2Ui rtji ! ; i = 1; : : : ; N; t = 1; : : : ; T (5) eti + w t i E0; i = 1; : : : ; N; t = 1; : : : ; T (6) wti E0 yti ; i = 1; : : : ; N; t = 1; : : : ; T (7) yti xt; i = 1; : : : ; N...

Mohapatra, Arupa Kumar

2013-07-26T23:59:59.000Z

366

Collective network for computer structures  

DOE Patents [OSTI]

A system and method for enabling high-speed, low-latency global collective communications among interconnected processing nodes. The global collective network optimally enables collective reduction operations to be performed during parallel algorithm operations executing in a computer structure having a plurality of the interconnected processing nodes. Router devices are included that interconnect the nodes of the network via links to facilitate performance of low-latency global processing operations at nodes of the virtual network. The global collective network may be configured to provide global barrier and interrupt functionality in asynchronous or synchronized manner. When implemented in a massively-parallel supercomputing structure, the global collective network is physically and logically partitionable according to the needs of a processing algorithm.

Blumrich, Matthias A; Coteus, Paul W; Chen, Dong; Gara, Alan; Giampapa, Mark E; Heidelberger, Philip; Hoenicke, Dirk; Takken, Todd E; Steinmacher-Burow, Burkhard D; Vranas, Pavlos M

2014-01-07T23:59:59.000Z

367

Collective network for computer structures  

DOE Patents [OSTI]

A system and method for enabling high-speed, low-latency global collective communications among interconnected processing nodes. The global collective network optimally enables collective reduction operations to be performed during parallel algorithm operations executing in a computer structure having a plurality of the interconnected processing nodes. Router devices ate included that interconnect the nodes of the network via links to facilitate performance of low-latency global processing operations at nodes of the virtual network and class structures. The global collective network may be configured to provide global barrier and interrupt functionality in asynchronous or synchronized manner. When implemented in a massively-parallel supercomputing structure, the global collective network is physically and logically partitionable according to needs of a processing algorithm.

Blumrich, Matthias A. (Ridgefield, CT); Coteus, Paul W. (Yorktown Heights, NY); Chen, Dong (Croton On Hudson, NY); Gara, Alan (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Takken, Todd E. (Brewster, NY); Steinmacher-Burow, Burkhard D. (Wernau, DE); Vranas, Pavlos M. (Bedford Hills, NY)

2011-08-16T23:59:59.000Z

368

Directory Enabled Policy Based Networking  

SciTech Connect (OSTI)

This report presents a discussion of directory-enabled policy-based networking with an emphasis on its role as the foundation for securely scalable enterprise networks. A directory service provides the object-oriented logical environment for interactive cyber-policy implementation. Cyber-policy implementation includes security, network management, operational process and quality of service policies. The leading network-technology vendors have invested in these technologies for secure universal connectivity that transverses Internet, extranet and intranet boundaries. Industry standards are established that provide the fundamental guidelines for directory deployment scalable to global networks. The integration of policy-based networking with directory-service technologies provides for intelligent management of the enterprise network environment as an end-to-end system of related clients, services and resources. This architecture allows logical policies to protect data, manage security and provision critical network services permitting a proactive defense-in-depth cyber-security posture. Enterprise networking imposes the consideration of supporting multiple computing platforms, sites and business-operation models. An industry-standards based approach combined with principled systems engineering in the deployment of these technologies allows these issues to be successfully addressed. This discussion is focused on a directory-based policy architecture for the heterogeneous enterprise network-computing environment and does not propose specific vendor solutions. This document is written to present practical design methodology and provide an understanding of the risks, complexities and most important, the benefits of directory-enabled policy-based networking.

KELIIAA, CURTIS M.

2001-10-01T23:59:59.000Z

369

A reliability assessment methodology for distribution systems with distributed generation  

E-Print Network [OSTI]

Generation and Micro-Grid Networks. v TABLE OF CONTENTS CHAPTER Page I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Distribution System Reliability... Generation and Micro-Grid Networks. v TABLE OF CONTENTS CHAPTER Page I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Distribution System Reliability...

Duttagupta, Suchismita Sujaya

2006-08-16T23:59:59.000Z

370

Microwave generator  

DOE Patents [OSTI]

A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit there through effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators. 6 figs.

Kwan, T.J.T.; Snell, C.M.

1987-03-31T23:59:59.000Z

371

Operation Poorman  

SciTech Connect (OSTI)

The objectives of Operation Poorman were to design and build a portable seismic system and to set up and use this system in a cold-weather environment. The equipment design uses current technology to achieve a low-power, lightweight system that is configured into three modules. The system was deployed in Alaska during wintertime, and the results provide a basis for specifying a mission-ready seismic verification system.

Pruvost, N.; Tsitouras, J.

1981-03-18T23:59:59.000Z

372

EIS-0362: Colorado Springs Utilities' Next Generation CFB Coal Generating Unit, CO  

Broader source: Energy.gov [DOE]

This EIS analyzes DOE's decision to approve Colorado Springs Utilities design, construction, and operation of their Next- Generation Circulating Fluidized Bed (CFB) Coal Generating Unit demonstration plant near Fountain, El Paso County, Colorado.

373

An on-line information system for radioisotope thermal generator production  

SciTech Connect (OSTI)

An on-line production information system has been designed to support radioisotope thermal generator assembly and testing in a new facility being built at the Department of Energy Hanford Site in Washington State. This system is intended to make handling the large volumes of information associated with radioisotope thermal generator production and certification more efficient with less opportunity for error than traditional paper methods. It provides for tracking materials, implementing work procedures directly from computer terminals, and cross referencing among materials, procedures, and other documents related to production. This system will be implemented on a network of microcomputers using UNIX{sup TM} for its operating system. It has been designed to allow increased capabilities to be added as operating experience with the new facility dictates.

Kiebel, G.R.; Wiemers, M.J. (Westinghouse Hanford Company, P.O. Box 1970, Mail Stop N1-42, Richland, Washington 99352 (US))

1991-01-01T23:59:59.000Z

374

Detecting Networks Employing Algorithmically Generated Domain Names  

E-Print Network [OSTI]

and hence has no com- mon IP address or a common domain name. Let ip = I be the total number of IP-addresses that are present after the F1 stage. and let d = D be total number of domain names that are present after the F1 stage. The vertices of graph G... for the second level domain name of xyz.com. At times a few of the IP addresses would end up in this component class because of a shortage in the 27 analysis period, given enough time ideally all the IP addresses (hosting server) of a single business unit...

Ashwath Kumar Krishna Reddy

2011-10-21T23:59:59.000Z

375

Stochastic generation of biologically accurate brain networks  

E-Print Network [OSTI]

Gen . . . . . . . . . . . . . . . . . . . 31 2. Synapses in NeuroConstruct . . . . . . . . . . . . . . 32 D. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 V LATTICE/GROUP : : : : : : : : : : : : : : : : : : : : : : : : : 35 A. Introduction... . . . . . . . . . . . . . . . . . . . . . . . . . . 35 B. Background . . . . . . . . . . . . . . . . . . . . . . . . . . 35 1. Lattice geometry . . . . . . . . . . . . . . . . . . . . . 35 2. Examples of lattice geometry . . . . . . . . . . . . . . 35 C. Lattice structures in the brain...

Aluri, Aravind

2006-04-12T23:59:59.000Z

376

Networks in Finance Anna Nagurney  

E-Print Network [OSTI]

Chapter 1 Networks in Finance Anna Nagurney Department of Finance and Operations Management as Chapter 17 in the Handbook on IT and Finance, D. Seese, C. Weinhardt, and F. Schlottmann, Editors, Springer (2008), Berlin, Germany. Summary. This handbook chapter traces the history of networks in finance

Nagurney, Anna

377

Cooperation in Cognitive Radio Networks  

Science Journals Connector (OSTI)

The operation of cognitive radio (CR) networks involves opportunistic access to the spectrum licensed to primary users (PUs) by secondary users (SUs). Traditionally, this access is performed in such a way that the PUs suffer minimal interference to their ... Keywords: cognitive radio networks, cooperation, cooperative relays

Pedro Smith Coutinho, José Ferreira de Rezende, Valmir Carneiro Barbosa

2014-05-01T23:59:59.000Z

378

The role of hydroelectric generation in electric power systems with large scale wind generation .  

E-Print Network [OSTI]

??An increasing awareness of the operational challenges created by intermittent generation of electricity from policy-mandated renewable resources, such as wind and solar, has led to… (more)

Hagerty, John Michael

2012-01-01T23:59:59.000Z

379

Renormalization flows in complex networks  

Science Journals Connector (OSTI)

Complex networks have acquired a great popularity in recent years, since the graph representation of many natural, social, and technological systems is often very helpful to characterize and model their phenomenology. Additionally, the mathematical tools of statistical physics have proven to be particularly suitable for studying and understanding complex networks. Nevertheless, an important obstacle to this theoretical approach is still represented by the difficulties to draw parallelisms between network science and more traditional aspects of statistical physics. In this paper, we explore the relation between complex networks and a well known topic of statistical physics: renormalization. A general method to analyze renormalization flows of complex networks is introduced. The method can be applied to study any suitable renormalization transformation. Finite-size scaling can be performed on computer-generated networks in order to classify them in universality classes. We also present applications of the method on real networks.

Filippo Radicchi; Alain Barrat; Santo Fortunato; José J. Ramasco

2009-02-06T23:59:59.000Z

380

Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization Artificial Neural Networks  

E-Print Network [OSTI]

Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization Artificial Neural Networks #12;Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization 1 Artificial Neural Networks Properties Applications Classical Examples Biological Background 2

Kjellström, Hedvig

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization Artificial Neural Networks  

E-Print Network [OSTI]

Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization Artificial Neural Networks Artificial Neural Networks Single Layer Networks Multi Layer Networks Generalization 1 Artificial Neural Networks Properties Applications Classical Examples Biological Background 2 Single Layer

Kjellström, Hedvig

382

Trends in mobile multimedia and networks  

Science Journals Connector (OSTI)

NTT DoCoMo is the company to "DO COmmunications over the MObile Network". It reached 43 million subscribers in Japan, early 2003. This presentation covers the multimedia services over mobile networks and give a glimpse of future directions of mobile ... Keywords: hyper operator network, mobile content, seamless service

Minoru Etoh

2003-04-01T23:59:59.000Z

383

Eventbased Control for Wirelessly Networked Systemsy y  

E-Print Network [OSTI]

systems Transportation networksHome automationIndustrial automation Home Network M i h bi i ProcessOre Waste A typical communication architecture for industrial automation and control Remote Clients Workplaces System Servers Operator EngineeringMaintenance Control Network Process Automation Process

Johansson, Karl Henrik

384

Operating systems and network protocols for wireless sensor networks  

Science Journals Connector (OSTI)

...foreseeable future. All hardware devices draw power when active...phenomena. The communication device draws power both when it...when it is in idle mode, listening for messages from neighbours. The storage device typically draws power only...

2012-01-01T23:59:59.000Z

385

Optimal allocation of multi-type distributed generators using backtracking search optimization algorithm  

Science Journals Connector (OSTI)

Abstract In this article, a very recently swarm optimization technique namely a backtracking search optimization algorithm (BSOA) is addressed to assign the distributed generators (DGs) along radial distribution networks. One of the main features of the BSOA is a single control parameter and not over sensitive to the initial value of this factor. The objective function is adapted with weighting factor to reduce the network real loss and enhance the voltage profile with the purpose of improving the operating performance. In addition, the combined power factor and reduction in network reactive power loss are spotted. Set of fuzzy expert rules using loss sensitivity factors and bus voltages are employed to identify the initial DG’s locations. The proposed approach is attuned to tackle the shortfall of loss sensitivity factors and to decide the final placement of the DGs. Two types of the \\{DGs\\} are studied and investigated. The proposed method is demonstrated and validated thru many radial distribution networks with different sizes and complexities. The BSOA-based methodology can efficiently generate high-quality solutions compared to other competitive techniques in the literature.

Attia El-Fergany

2015-01-01T23:59:59.000Z

386

On Predictable Operating System Protocol Processing Clifford W. Mercer, Jim Zelenka, and Ragunathan Rajkumar  

E-Print Network [OSTI]

On Predictable Operating System Protocol Processing Clifford W. Mercer, Jim Zelenka, and Ragunathan, protocol processing, resource reservation, operating systems, predictability, reservation, admission that incorporate digital audio and video require predictable response from the operating system and the network

387

Superconducting thermoelectric generator  

DOE Patents [OSTI]

Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficiencies between 4% and 7% in the 800{degrees} to 1200{degrees}C range. According to its major aspects and bradly stated, the present invention is an apparatus and method for producing electricity from heat. In particular, the invention is a thermoelectric generator that juxtaposes a superconducting material and a semiconducting material - so that the superconducting and the semiconducting materials touch - to convert heat energy into electrical energy without resistive losses in the temperature range below the critical temperature of the superconducting material. Preferably, an array of superconducting material is encased in one of several possible configurations within a second material having a high thermal conductivity, preferably a semiconductor, to form a thermoelectric generator.

Metzger, J.D.; El-Genk, M.S.

1994-01-01T23:59:59.000Z

388

NREL: Energy Analysis: Impacts of Conventional Generators  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Impacts on Conventional Generators Impacts on Conventional Generators Impacts of Renewable Electricity Generation on Efficiency and Emissions of Conventional Generators With increasing penetration of wind and solar generation, conventional fossil-fired power plants may be required to adjust their output level, start up, or shut down more frequently to accommodate the variability and uncertainty of these technologies. These operational changes can negatively impact plant efficiency and emissions. NREL's analyses are focused on understanding and quantifying the emissions and costs associated with these operational changes. NREL's impacts of renewable electricity generation on conventional generators analyses show that: While the emissions impacts of generator cycling and part-loading can be significant (e.g., combined cycle generators), these impacts are

389

Hybrid permanent magnet and variable reluctance generator  

SciTech Connect (OSTI)

This patent describes a hybrid electrical generator. It comprises: a permanent magnet generator having a permanent magnet rotor mounted on a shaft, the permanent magnet generator providing an output voltage over an operating range which falls in response to an increasing electrical load; a variable reluctance generator having a rotor mounted on the shaft with excitation of a stator of the variable reluctance generator being provided from the permanent magnet generator, the variable reluctance generator providing an output voltage which varies in response to an increasing electrical load over an operating range; and a voltage regulator, responsive to combined output voltages of the generators, for controlling the output voltage provided by the variable reluctance generator.

Vaidya, J.; Belanger, D.J.

1990-09-25T23:59:59.000Z

390

Network Programming 1 Computer Networks  

E-Print Network [OSTI]

Network Programming 1 Computer Networks client/server architecture, protocols, and sockets 2;Network Programming 1 Computer Networks client/server architecture, protocols, and sockets 2 Network;client/server architecture Client/server architecture defines the communication between two computers

Verschelde, Jan

391

Multi-agent system for the operation of an integrated microgrid  

Science Journals Connector (OSTI)

Operation of modern power system has become a complex problem as its focus has shifted to implementing smart grid techniques and integrating distributed renewable energy sources. Integrated microgrid is an innovative control and management architecture at distribution network level where several microgrids are electrically interconnected with each other. This paper presents a multi-agent system (MAS) for the operation of an integrated microgrid. A hierarchical control scheme is used for maximizing the power production output of local distributed generators and optimizing power exchanges among the microgrids as well as power exchange between the main distribution system and the integrated microgrid. This scheme was implemented on the multi-agent system. Simulation studies carried out on the developed system demonstrate the effectiveness of the proposed multi-agent system for the operation of an integrated microgrid.

Thillainathan Logenthiran; Dipti Srinivasan

2012-01-01T23:59:59.000Z

392

Magnetocumulative generator  

DOE Patents [OSTI]

An improved magnetocumulative generator is described that is useful for producing magnetic fields of very high energy content over large spatial volumes. The polar directed pleated magnetocumulative generator has a housing providing a housing chamber with an electrically conducting surface. The chamber forms a coaxial system having a small radius portion and a large radius portion. When a magnetic field is injected into the chamber, from an external source, most of the magnetic flux associated therewith positions itself in the small radius portion. The propagation of an explosive detonation through high-explosive layers disposed adjacent to the housing causes a phased closure of the chamber which sweeps most of the magnetic flux into the large radius portion of the coaxial system. The energy content of the magnetic field is greatly increased by flux stretching as well as by flux compression. The energy enhanced magnetic field is utilized within the housing chamber itself.

Pettibone, J.S.; Wheeler, P.C.

1981-06-08T23:59:59.000Z

393

Monthly Generation System Peak (pbl/generation)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Generation > Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Monthly Generation System Peak (GSP) This site is no longer maintained. Page last...

394

Photon generator  

DOE Patents [OSTI]

A photon generator includes an electron gun for emitting an electron beam, a laser for emitting a laser beam, and an interaction ring wherein the laser beam repetitively collides with the electron beam for emitting a high energy photon beam therefrom in the exemplary form of x-rays. The interaction ring is a closed loop, sized and configured for circulating the electron beam with a period substantially equal to the period of the laser beam pulses for effecting repetitive collisions.

Srinivasan-Rao, Triveni (Shoreham, NY)

2002-01-01T23:59:59.000Z

395

Generating set for general multipartite entangled states  

E-Print Network [OSTI]

We propose a entanglement generating set for a general multipartite state based on the of concurrence. In particular, we show that concurrence for general multipartite states can be constructed by different classes of local operators which are defined by complement of positive operator valued measure on quantum phases. The entanglement generating set consists of different classes of entanglement that are detected by these classes of operators and contributes to the degree of entanglement for a general multipartite state.

Hoshang Heydari

2006-03-16T23:59:59.000Z

396

Plant Networks for Processing Recyclable Materials  

Science Journals Connector (OSTI)

We use a modified optimal market area model to examine how links between material recycling and other aspects of operations strategy can shape plant networks for the processing of recyclable materials. We characterize the complementarity of the recyclate ... Keywords: localization, material versatility, minimills, operations strategy, optimal market area, plant networks, recycling

Lieven Demeester; Mei Qi; Luk N. Van Wassenhove

2013-10-01T23:59:59.000Z

397

Sempra Generation | Open Energy Information  

Open Energy Info (EERE)

Generation Generation Jump to: navigation, search Name Sempra Generation Place California Utility Id 55701 Utility Location Yes Ownership W NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Wholesale Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates No Rates Available References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Sempra_Generation&oldid=411504" Categories: EIA Utility Companies and Aliases

398

Harmonic and interharmonic distortion analysis in the grid-connected wind electric generator  

Science Journals Connector (OSTI)

The operation of wind turbines has an impact on the power quality at the connected electric network. The integration of wind electric generators with the power grid becomes a headache for power engineers in several aspects. Harmonic distortion is one of the most important phenomena which affect the grid performance. This paper provides an in-depth discussion on harmonic and interharmonic distortion taking place on the low-voltage side of the wind generator, as well as in the power grid side. A case study, to determine where a significant amount of harmonic currents or voltages exists in the system, is performed using a power quality analyser. From these measurements and subsequent calculations, the levels of harmonics and interharmonics are analysed. It is found that the harmonic distortion is invariably present on the generator side as well as on the grid side, depending on the wind turbine technology.

V. Suresh Kumar; P.S. Kannan

2007-01-01T23:59:59.000Z

399

Aerodynamic beam generator for large particles  

DOE Patents [OSTI]

A new type of aerodynamic particle beam generator is disclosed. This generator produces a tightly focused beam of large material particles at velocities ranging from a few feet per second to supersonic speeds, depending on the exact configuration and operating conditions. Such generators are of particular interest for use in additive fabrication techniques.

Brockmann, John E. (Albuquerque, NM); Torczynski, John R. (Albuquerque, NM); Dykhuizen, Ronald C. (Albuquerque, NM); Neiser, Richard A. (Albuquerque, NM); Smith, Mark F. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

400

Application of particle swarm optimization for distribution feeder reconfiguration considering distributed generators  

Science Journals Connector (OSTI)

In many countries the power systems are going to move toward creating a competitive structure for selling and buying electrical energy. These changes and the numerous advantages of the distributed generation units (DGs) in term of their technology enhancement and economical considerations have created more incentives to use these kinds of generators than before. Therefore, it is necessary to study the impact of \\{DGs\\} on the power systems, especially on the distribution networks. The distribution feeder reconfiguration (DFR) is one of the most important control schemes in the distribution networks, which can be affected by DGs. This paper presents a new approach to DFR at the distribution networks considering DGs. The main objective of the DFR is to minimize the deviation of the bus voltage, the number of switching operations and the total cost of the active power generated by \\{DGs\\} and distribution companies. Since the DFR is a nonlinear optimization problem, we apply the particle swarm optimization (PSO) approach to solve it. The feasibility of the proposed approach is demonstrated and compared with other evolutionary methods such as genetic algorithm (GA), Tabu search (TS) and differential evolution (DE) over a realistic distribution test system.

J. Olamaei; T. Niknam; G. Gharehpetian

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Physical Network Configuration of Next Generation Home Network  

Science Journals Connector (OSTI)

The number of FTTH users is increasing, but their number in Japan is dramatically increasing. At the end of 2004, 2.4 million users signed for optical fiber to their home. Which...

Oguchi, Kimio; Okodo, Takayoshi; Tojo, Kunio; Okada, Kohei

402

Group-based Ad-hoc Network for Multimedia Communications  

E-Print Network [OSTI]

Group-based Ad-hoc Network for Multimedia Communications \\ Koichiro Ban and Hamid Gharavi National is concerned with evaluating ad-hoc networks for group-oriented tactical operations. For such operations, a cellular-based ad-hoc network architecture has been constructed for real-time multimedia communications

403

Cyberinfrastructure and Operations Research  

E-Print Network [OSTI]

Data and network security services are emerging as a necessity for ... networks and the electricity grid, there are national security implications to this research.

404

Optical Network Testbeds Workshop  

SciTech Connect (OSTI)

This is the summary report of the third annual Optical Networking Testbed Workshop (ONT3), which brought together leading members of the international advanced research community to address major challenges in creating next generation communication services and technologies. Networking research and development (R&D) communities throughout the world continue to discover new methods and technologies that are enabling breakthroughs in advanced communications. These discoveries are keystones for building the foundation of the future economy, which requires the sophisticated management of extremely large qualities of digital information through high performance communications. This innovation is made possible by basic research and experiments within laboratories and on specialized testbeds. Initial network research and development initiatives are driven by diverse motives, including attempts to solve existing complex problems, the desire to create powerful new technologies that do not exist using traditional methods, and the need to create tools to address specific challenges, including those mandated by large scale science or government agency mission agendas. Many new discoveries related to communications technologies transition to wide-spread deployment through standards organizations and commercialization. These transition paths allow for new communications capabilities that drive many sectors of the digital economy. In the last few years, networking R&D has increasingly focused on advancing multiple new capabilities enabled by next generation optical networking. Both US Federal networking R&D and other national R&D initiatives, such as those organized by the National Institute of Information and Communications Technology (NICT) of Japan are creating optical networking technologies that allow for new, powerful communication services. Among the most promising services are those based on new types of multi-service or hybrid networks, which use new optical networking technologies. Several years ago, when many of these optical networking research topics were first being investigated, they were the subject of controversial debate. The new techniques challenged many long-held concepts related to architecture and technology. However, today all major networking organizations are transitioning toward infrastructure that incorporates these new concepts. This progress has been assisted through the series of Optical Networking Testbed Workshops (ONT). The first (ONT1) outlined a general framework of key issues and topics and developed a series of recommendations (www.nren.nasa.gov/workshop7). The second (ONT2) developed a common vision of optical network technologies, services, infrastructure, and organizations (www.nren.nasa.gov/workshop8). Processes that allow for a common vision encourage widespread deployment of these types of resources among advanced networking communities. Also, such a shared vision enables key concepts and technologies to migrate from basic research testbeds to wider networking communities. The ONT-3 workshop built on these earlier activities by expanding discussion to include additional considerations of the international interoperability and of greater impact of optical networking technology on networking in general. In accordance with this recognition, the workshop confirmed that future-oriented research and development is indispensable to fundamentally change the current Internet architecture to create a global network incorporating completely new concepts. The workshop also recognized that the first priority to allow for this progress is basic research and development, including international collaborative activities, which are important for the global realization of interoperability of a new generation architecture.

Joe Mambretti

2007-06-01T23:59:59.000Z

405

Capability constraints to mitigate voltage fluctuations from DFIG wind farms when delivering ancillary services to the network  

Science Journals Connector (OSTI)

Abstract Majority of the wind power resources are typically sited at remote locations in power networks and generated power is transmitted through rural transmission corridors to load centres. With increased penetration level of the wind generation there is an increased requirement to provide ancillary services from distributed wind power resources, hence they are operated under different control strategies to provide ancillary services to the network. The control strategies and capability characteristics will significant impact on voltage fluctuations in distribution networks. This paper presents a comparative analysis between different wind generator control strategies (i.e. power factor control strategy, voltage control strategy and reactive power dispatch strategy) on network voltage fluctuations during variable wind conditions while considering extended reactive power capability (i.e. with both generator and power electronic converter reactive power capabilities) for the doubly-fed induction generator (DFIG). Voltage fluctuations are analysed using real wind data measured at a DFIG based wind farm, and the wind farm model was verified against real measurements. Study has shown that voltage fluctuations are exacerbated when wind generator is at mode transition (i.e. from power optimisation mode to power limitation mode). A sensitivity analysis has shown that voltage fluctuations are exacerbated due to the limitations of the reactive power capability of the DFIG, and the operating point of the DFIG power curve irrespective of the control strategy implemented at the wind generator. Furthermore, a mitigation strategy was developed as an integrated control scheme to the main control scheme in order to reduce voltage fluctuations due to wind power variations. However, effectiveness of the mitigation strategy is greatly affected by the reactive power capability of the DFIG, in particular during high wind turbulences.

Lasantha Meegahapola; Sarath Perera

2014-01-01T23:59:59.000Z

406

Ironstack: Performance, Stability and Security for Power Grid Data Networks  

Science Journals Connector (OSTI)

Operators of the nationwide power grid use proprietary data networks to monitor and manage their power distribution systems. These purpose-built, wide area communication networks connect a complex array of equipment ranging from PMUs and synchrophasers ... Keywords: software-defined networking, SDNs, network performance, high-assurance computing, security

Zhiyuan Teo, Vera Kutsenko, Ken Birman, Robbert Van Renesse

2014-06-01T23:59:59.000Z

407

Dubuque generation station, Dubuque, Iowa  

SciTech Connect (OSTI)

Alliant Energy's Dubuque generation station is a fine example of why small does not mean insignificant in the power generation industry. This winner of the EUCG best performer award in the small plant category shows that its operating excellence towers over that of many larger and much newer coal-fired power plants. The plant has three operating units with boilers originally designed for Illinois basin coal but now Powder River Basin coal makes up 75% of the coal consumed. The boilers can also burn natural gas. 4 photos.

Peltier, R.

2008-10-15T23:59:59.000Z

408

Frequency regulator for synchronous generators  

DOE Patents [OSTI]

The present invention is directed to a novel frequency regulator which controls a generator output frequency for variations in both the input power to the generator and the power supplied to an uncontrolled external load. The present invention further includes over current and current balance protection devices which are relatively inexpensive to manufacture, which may be encapsulated to provide protection from the operating environment and which respond more quickly than previously known electromechanical devices.

Karlicek, Robert F. (1920 Camino Centroloma, Fullerton, CA 92633)

1982-01-01T23:59:59.000Z

409

Frequency regulator for synchronous generators  

DOE Patents [OSTI]

The present invention is directed to a novel frequency regulator which controls a generator output frequency for variations in both the input power to the generator and the power supplied to an uncontrolled external load. The present invention further includes over current and current balance protection devices which are relatively inexpensive to manufacture, which may be encapsulated to provide protection from the operating environment and which respond more quickly than previously known electromechanical devices. 11 figs.

Karlicek, R.F.

1982-08-10T23:59:59.000Z

410

Network Economics Anna Nagurney  

E-Print Network [OSTI]

and Operations Management Isenberg School of Management University of Massachusetts Amherst, Massachusetts 01003 Handbook of Computational Econometrics David Belsley and Erricos Kontoghiorghes, Editors, John Wiley & Sons, network theory has developed into a powerful and dynamic mechanism for abstracting complex problems, which

Nagurney, Anna

411

Microsystem process networks  

DOE Patents [OSTI]

Various aspects and applications of microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having exergetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

2006-10-24T23:59:59.000Z

412

Microsystem process networks  

DOE Patents [OSTI]

Various aspects and applications or microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

Wegeng, Robert S [Richland, WA; TeGrotenhuis, Ward E [Kennewick, WA; Whyatt, Greg A [West Richland, WA

2010-01-26T23:59:59.000Z

413

Microsystem process networks  

DOE Patents [OSTI]

Various aspects and applications of microsystem process networks are described. The design of many types of Microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having energetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

Wegeng, Robert S. (Richland, WA); TeGrotenhuis, Ward E. (Kennewick, WA); Whyatt, Greg A. (West Richland, WA)

2007-09-18T23:59:59.000Z

414

Generation Technologies  

E-Print Network [OSTI]

Many local governments are using green power in their facilities and providing assistance to local businesses and residents to do the same. Green power is a subset of renewable energy that is produced with no GHG emissions, typically from solar, wind, geothermal, biogas, biomass, or low-impact small hydroelectric sources, includes three types of products: utility products (i.e., green power purchased from the utility through the electricity grid), renewable energy certificates (RECs), and on-site generation. Opportunities to purchase these products are increasing significantly, with annual green power market growth rates

Green Power

2005-01-01T23:59:59.000Z

415

electricity generating capacity | OpenEI  

Open Energy Info (EERE)

generating capacity generating capacity Dataset Summary Description The New Zealand Ministry of Economic Development publishes energy data including many datasets related to electricity. Included here are three electricity generating capacity datasets: annual operational electricity generation capacity by plant type (1975 - 2009); estimated generating capacity by fuel type for North Island, South Island and New Zealand (2009); and information on generating plants (plant type, name, owner, commissioned date, and capacity), as of December 2009. Source New Zealand Ministry of Economic Development Date Released Unknown Date Updated July 03rd, 2009 (5 years ago) Keywords biomass coal Electric Capacity electricity generating capacity geothermal Hydro Natural Gas wind Data application/vnd.ms-excel icon Operational Electricity Generation Capacity by Plant Type (xls, 42.5 KiB)

416

Magnetocumulative generator  

DOE Patents [OSTI]

An improved magnetocumulative generator is described that is useful for producing magnetic fields of very high energy content over large spatial volumes. The polar directed pleated magnetocumulative generator has a housing (100, 101, 102, 103, 104, 105) providing a housing chamber (106) with an electrically conducting surface. The chamber (106) forms a coaxial system having a small radius portion and a large radius portion. When a magnetic field is injected into the chamber (106), from an external source, most of the magnetic flux associated therewith positions itself in the small radius portion. The propagation of an explosive detonation through high-explosive layers (107, 108) disposed adjacent to the housing causes a phased closure of the chamber (106) which sweeps most of the magnetic flux into the large radius portion of the coaxial system. The energy content of the magnetic field is greatly increased by flux stretching as well as by flux compression. The energy enhanced magnetic field is utilized within the housing chamber itself.

Pettibone, Joseph S. (Livermore, CA); Wheeler, Paul C. (Livermore, CA)

1983-01-01T23:59:59.000Z

417

Wind power: executive summary on research on network wind power over the Pacific Northwest. Progress report, October 1979-September 1980  

SciTech Connect (OSTI)

This research in FY80 is composed of six primary tasks. These tasks include data collection and analysis, wind flow studies around an operational wind turbine generator (WTG), kite anemometer calibration, wind flow analysis and prediction, the Klickitat County small wind energy conversion system (SWECS) program, and network wind power analysis. The data collection and analysis task consists of four sections, three of which deal with wind flow site surveys and the fourth with collecting and analyzing wind data from existing data stations.

Baker, R.W.; Hewson, E.W.

1980-10-01T23:59:59.000Z

418

Hermetic turbine generator  

DOE Patents [OSTI]

A Rankine cycle turbine drives an electric generator and a feed pump, all on a single shaft, and all enclosed within a hermetically sealed case. The shaft is vertically oriented with the turbine exhaust directed downward and the shaft is supported on hydrodynamic fluid film bearings using the process fluid as lubricant and coolant. The selection of process fluid, type of turbine, operating speed, system power rating, and cycle state points are uniquely coordinated to achieve high turbine efficiency at the temperature levels imposed by the recovery of waste heat from the more prevalent industrial processes.

Meacher, John S. (Ballston Lake, NY); Ruscitto, David E. (Ballston Spa, NY)

1982-01-01T23:59:59.000Z

419

GCFR steam generator conceptual design  

SciTech Connect (OSTI)

The gas-cooled fast reactor (GCFR) steam generators are large once-through heat exchangers with helically coiled tube bundles. In the GCFR demonstration plant, hot helium from the reactor core is passed through these units to produce superheated steam, which is used by the turbine generators to produce electrical power. The paper describes the conceptual design of the steam generator. The major components and functions of the design are addressed. The topics discussed are the configuration, operating conditions, design criteria, and the design verification and support programs.

Holm, R.A.; Elliott, J.P.

1980-01-01T23:59:59.000Z

420

Marine diesel generator from Yanmar  

SciTech Connect (OSTI)

A diesel generator series now available from Yanmar Diesel Engine Co. is designed to provide low fuel costs, direct burning of heavy fuel oil and long life in marine applications from 320 to 600 kW output. The new 6N18L generator sets are based on a six-cylinder, four-stroke, water-cooled engine (bore 180 x stroke 280 mm), which has rated speeds of 720 and 900 r/min. Compatible with mono-fuel ships, the generator engines are designed for operation on heavy fuels to 700 cSt (50{degree}C). This paper describes briefly the design and innovation of this system.

NONE

1996-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Biogass Generator  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Another internet tool by: Another internet tool by: Build Your Own Page 1 of 5 Teach...build...learn...renewable energy! Biogas Generator A Renewable Energy Project Kit The Pembina Institute What Is Biogas? Biogas is actually a mixture of gases, usually carbon dioxide and methane. It is produced by a few kinds of microorganisms, usually when air or oxygen is absent. (The absence of oxygen is called "anaerobic conditions.") Animals that eat a lot of plant material, particularly grazing animals such as cattle, produce large amounts of biogas. The biogas is produced not by the cow or elephant, but by billions of microor- ganisms living in its digestive system. Biogas also develops in bogs and at the bottom of lakes, where decaying organic matter builds up under wet and

422

Optimization of Steam Network in Tehran Oil Refinery  

E-Print Network [OSTI]

case study and its steam network is analyzed. At the first step, using STAR software, the steam network is simulated and then optimized, which determines the optimum conditions. In this regard, energy saving potential was identified and total operating...

Khodaie, H.; Nasr, M. R. J.

2008-01-01T23:59:59.000Z

423

Second generation heliostat. Final report  

SciTech Connect (OSTI)

The heliostat subsystem design is described. The test program is summarized, including component testing, subsystem operation at MDAC-Huntington Beach, and the shipment and installation at the Central Receiver Test Facility. The production heliostat description, the manufacturing process definitions, and the manufacturing facility definition are summarized. The installation, operations, and maintenance requirements for the 50 MWe field are summarized. Results are given of the cost analysis of the MDAC Second Generation Heliostat when produced at an annual rate of 50,000 units per year and installed and operated in a field of 5412 heliostats. Possible future development activities aimed at further cost reduction are discussed. (LEW)

Steinmeyer, D.A.

1981-04-01T23:59:59.000Z

424

Generating Probability Distributions using Multivalued Stochastic Relay Circuits  

E-Print Network [OSTI]

Generating Probability Distributions using Multivalued Stochastic Relay Circuits David Lee Dept as well as for generating arbitrary distributions from unbiased bits. An equally interesting, but less networks that generate arbitrary probability distributions in an optimal way? In this paper, we study

Bruck, Jehoshua (Shuki)

425

Poisson Distributed Noise Generation for Spiking Neural Applications  

E-Print Network [OSTI]

Poisson Distributed Noise Generation for Spiking Neural Applications Katherine Cameron, Thomas neural networks. However, it can be difficult to generate large truly random spike distributions which as randomly firing and a matlab generated Poisson distributed noise source. A hazard function shows

Cameron, Katherine

426

Minimum Cost Operation Mode and Minimum Loss Operation Mode of Power System – Operation Mode Selection Based on Voltage Stability  

Science Journals Connector (OSTI)

Two formulae – an optimal P-Q generation formula for minimum system cost and an optimal MW allocation formula for minimum system loss – are described in this paper. The author defines two kinds of power system operation

Sang-Joong Lee

2006-01-01T23:59:59.000Z

427

CP violation and generation mixing  

Science Journals Connector (OSTI)

We explore the possibility of defining maximal CP violation by requiring that generation mixing disappears when the CP-violating terms go to zero in the standard model. This leads to a family of cases related to ‘‘different CP operations being maximized’’ and corresponding to the existing variety of proposals for mixing matrix parametrizations. A favored choice, useful for model building, seems to emerge.

M. Gronau; V. Gupta; R. Johnson; J. Schechter

1986-06-01T23:59:59.000Z

428

Analysis of accident sequences and source terms at waste treatment and storage facilities for waste generated by U.S. Department of Energy Waste Management Operations, Volume 1: Sections 1-9  

SciTech Connect (OSTI)

This report documents the methodology, computational framework, and results of facility accident analyses performed for the U.S. Department of Energy (DOE) Waste Management Programmatic Environmental Impact Statement (WM PEIS). The accident sequences potentially important to human health risk are specified, their frequencies are assessed, and the resultant radiological and chemical source terms are evaluated. A personal computer-based computational framework and database have been developed that provide these results as input to the WM PEIS for calculation of human health risk impacts. The methodology is in compliance with the most recent guidance from DOE. It considers the spectrum of accident sequences that could occur in activities covered by the WM PEIS and uses a graded approach emphasizing the risk-dominant scenarios to facilitate discrimination among the various WM PEIS alternatives. Although it allows reasonable estimates of the risk impacts associated with each alternative, the main goal of the accident analysis methodology is to allow reliable estimates of the relative risks among the alternatives. The WM PEIS addresses management of five waste streams in the DOE complex: low-level waste (LLW), hazardous waste (HW), high-level waste (HLW), low-level mixed waste (LLMW), and transuranic waste (TRUW). Currently projected waste generation rates, storage inventories, and treatment process throughputs have been calculated for each of the waste streams. This report summarizes the accident analyses and aggregates the key results for each of the waste streams. Source terms are estimated and results are presented for each of the major DOE sites and facilities by WM PEIS alternative for each waste stream. The appendices identify the potential atmospheric release of each toxic chemical or radionuclide for each accident scenario studied. They also provide discussion of specific accident analysis data and guidance used or consulted in this report.

Mueller, C.; Nabelssi, B.; Roglans-Ribas, J. [and others

1995-04-01T23:59:59.000Z

429

Thermoelectric generator  

SciTech Connect (OSTI)

A thermoelectric generator unit is described comprising: a hot side heat exchanger including a plate having extruded retention posts projecting from one surface of the plate, and fins adapted for contact with a heating source. The fins are positioned between two of the retention posts. Retention rods are inserted between the retention posts and the base of the fins to retain the fin in thermal contact with the plate surface upon insertion of the retention rod between the engaging surface of the post and the corresponding fin. Thermoelectric semi-conductor modules are in thermal contact with the opposite side of the hot side heat exchanger plate from the contact with the fins. The modules are arranged in a grid pattern so that heat flow is directed into each of the modules from the hot side heat exchanger. The modules are connected electrically so as to combine their electrical output; and a cold side heat exchanger is in thermal contact with the modules acting as a heat sink on the opposite side of the module from the hot side heat exchanger plate so as to produce a thermal gradient across the modules.

Shakun, W.; Bearden, J.H.; Henderson, D.R.

1988-03-29T23:59:59.000Z

430

Saudi Aramco Gas Operations Energy Efficiency Program  

E-Print Network [OSTI]

Saudi Aramco Gas Operations (GO) created energy efficiency strategies for its 5-year business plan (2011-2015), supported by a unique energy efficiency program, to reduce GO energy intensity by 26% by 2015. The program generated an energy savings...

Al-Dossary, F. S.

2012-01-01T23:59:59.000Z

431

Nuclear reactor characteristics and operational history  

U.S. Energy Information Administration (EIA) Indexed Site

Nuclear > U.S. reactor operation status tables Nuclear > U.S. reactor operation status tables Nuclear Reactor Operational Status Tables Release date: November 22, 2011 Next release date: November 2012 See also: Table 2. Ownership Data, Table 3. Characteristics and Operational History Table 1. Nuclear Reactor, State, Type, Net Capacity, Generation, and Capacity Factor PDF XLS Plant/Reactor Name Generator ID State Type 2009 Summer Capacity Net MW(e)1 2010 Annual Generation Net MWh2 Capacity Factor Percent3 Arkansas Nuclear One 1 AR PWR 842 6,607,090 90 Arkansas Nuclear One 2 AR PWR 993 8,415,588 97 Beaver Valley 1 PA PWR 892 7,119,413 91 Beaver Valley 2 PA PWR 885 7,874,151 102 Braidwood Generation Station 1 IL PWR 1,178 9,196,689 89

432

Ignition distributor voltage generator  

SciTech Connect (OSTI)

This patent describes a voltage pulse generator and ignition distributor comprising, a base, a shaft rotatably supported by the base, a distributor cap supported by the base having a center electrode and circumferentially spaced outer electrodes. The pulse generator and ignition distribution also include a first rotor driven by the shaft formed of electrical insulating material having electrically conductive means connected to the center terminal and a portion that rotates past the outer electrodes. The portion of the electrically conductive means that rotates past the outer electrodes is spaced from the outer electrodes to form a gap therebetween. A voltage pulse generator comprises a second rotor driven by the shaft, at least one permanent magnet and an annular pickup coil supported by the base. The pickup coil has inner turns and outer turns, the beginning turn of the inner turns connected to a first lead and the last turn of the outer turns connected to a second lead, the outer turns enclosing the inner turns. The pickup coil also has a circuit connected directly between the second lead and ground which is operative to provide a direct conductive path to ground for high frequency energy capacitively coupled to the outer turns from the gap discharge between the electrically conductive means of the first rotor and an outer electrode, the outer turns forming a grounded shield for the inner turns.

Boyer, J.A.

1986-11-04T23:59:59.000Z

433

Neural network based system for equipment surveillance  

DOE Patents [OSTI]

A method and system for performing surveillance of transient signals of an industrial device to ascertain the operating state. The method and system involves the steps of reading into a memory training data, determining neural network weighting values until achieving target outputs close to the neural network output. If the target outputs are inadequate, wavelet parameters are determined to yield neural network outputs close to the desired set of target outputs and then providing signals characteristic of an industrial process and comparing the neural network output to the industrial process signals to evaluate the operating state of the industrial process.

Vilim, Richard B. (Aurora, IL); Gross, Kenneth C. (Bolingbrook, IL); Wegerich, Stephan W. (Glendale Hts., IL)

1998-01-01T23:59:59.000Z

434

,"Plant","Primary Energy Source","Operating Company","Net Summer...  

U.S. Energy Information Administration (EIA) Indexed Site

Energy Source","Operating Company","Net Summer Capacity (MW)" 1,"Hay Road","Natural Gas","Calpine Mid-Atlantic Generation LLC",1130 2,"Indian River Generating...

435

Electric Power Generation and Transmission (Iowa)  

Broader source: Energy.gov [DOE]

Electric power generating facilities with a combined capacity greater than 25 MW, as well as associated transmission lines, may not be constructed or begin operation prior to the issuance of a...

436

Introduction Minimal generation  

E-Print Network [OSTI]

Introduction Minimal generation Random generation Minimal and probabilistic generation of finite generation of finite groups #12;Introduction Minimal generation Random generation Some motivation Let x1 random elements of G = x1, . . . , xk . (G is the group generated by x1, . . . , xk : all possible

St Andrews, University of

437

Formal Specification of Operating System Operations  

E-Print Network [OSTI]

Formal Specification of Operating System Operations Dan Zhou Department of Computer Science.black@nist.gov This paper describes the development of a formal specification for a secure operating system architecture operations. We also provide a uniform environment for system commands that change the security state

Black, Paul E.

438

Connecting to the Grid: A Guide to Distributed Generation Interconnection Issues, 6th Edition, 2009  

Broader source: Energy.gov [DOE]

This guide addresses issues relevant to all DG technologies, including net excess generation, third-party ownership, energy storage and networks

439

Designing Networks: A Mixed-Integer Linear Optimization Approach  

E-Print Network [OSTI]

Designing networks with specified collective properties is useful in a variety of application areas, enabling the study of how given properties affect the behavior of network models, the downscaling of empirical networks to workable sizes, and the analysis of network evolution. Despite the importance of the task, there currently exists a gap in our ability to systematically generate networks that adhere to theoretical guarantees for the given property specifications. In this paper, we propose the use of Mixed-Integer Linear Optimization modeling and solution methodologies to address this Network Generation Problem. We present a number of useful modeling techniques and apply them to mathematically express and constrain network properties in the context of an optimization formulation. We then develop complete formulations for the generation of networks that attain specified levels of connectivity, spread, assortativity and robustness, and we illustrate these via a number of computational case studies.

Gounaris, Chrysanthos E; Kevrekidis, Ioannis G; Floudas, Christodoulos A

2015-01-01T23:59:59.000Z

440

High Detail Stationary Optimization Models for Gas Networks  

E-Print Network [OSTI]

Oct 15, 2014 ... Abstract: Due to strict regulatory rules in combination with complex nonlinear physics, major gas network operators in Germany and Europe ...

Martin Schmidt

2014-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Enhanced Building Operation Using "Operation Diagnostics" - A Case Study  

E-Print Network [OSTI]

the utility into hot water. They are lo- cated in a central heating plant room in the basement. The distribution system maintains static heating (of- fices south-west and offices north-east), heating coils of the AHU’s, as well as central domestic hot... the dynamic operation of systems regarding reduced energy con- sumption and/or improved comfort. Available Data Base and Data Quality Data from the BAS has been recorded since Spring 2004. Due to limited capacity of the network only 160 of the 3200...

Baumann, O.

2005-01-01T23:59:59.000Z

442

Development of Optimal Catalyst Designs and Operating Strategies...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Coupled LNTSCR Development of Optimal Catalyst Designs and Operating Strategies for Coupled LNTSCR We introduce a new bench-scale engine generator testing system for different...

443

Table 3. Nuclear Reactor Characteristics and Operational History  

U.S. Energy Information Administration (EIA) Indexed Site

3. Nuclear Reactor Characteristics and Operational History" "Plant Name","Generator ID","Type","Reactor Supplier and Model","Construction Start","Grid Connection","Commercial...

444

Treatment of produced water using chemical and biological unit operations.  

E-Print Network [OSTI]

??Water generated along with oil and gas during coal bed methane and oil shale operations is commonly known as produced water, formation water, or oilfield… (more)

Li, Liang

2010-01-01T23:59:59.000Z

445

Exhibit A: ENSR Modeling in Support of Individual Unit Operation...  

Broader source: Energy.gov (indexed) [DOE]

More Documents & Publications Comments on Department of Energy's Emergency Order To Resume Limited Operation at Mirant's Potomac River Generating Station and Proposed Mirant...

446

THE OPERATOR © FOR THE CHROMATIC NUMBER OF A GRAPH£ ¡  

E-Print Network [OSTI]

by ADONET, Marie Curie Research Training Network MRTN-CT-2oo3-5o4438. ?Centrum voor ...... Mathematics of Operations Research, 28:47o-496. [21] Laurent, M. ... ?ournal of Combinatorics, Information & System Sciences, 3:134-

2007-11-15T23:59:59.000Z

447

Networks, smart grids: new model for synchronization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Stories » Stories » Networks, smart grids: new model for synchronization Networks, smart grids: new model for synchronization Researchers developed a surprisingly simple mathematical model that accurately predicts synchronization as a function of the parameters and the topology of the underlying network. May 21, 2013 High voltage transmission lines carry electrical power. High voltage transmission lines carry electrical power. The researchers envision that their method could be applied to assess synchronization and robustness quickly in electrical grids under volatile operating conditions. Networks of individual oscillating nodes often spontaneously synchronize and begin to oscillate at a coherent frequency. From heart cells to flashing fireflies to electric power grids, coupled oscillator networks are

448

Third generation development of an 11-watt Stirling converter  

SciTech Connect (OSTI)

This paper describes recent design enhancements, performance results, and development of an artificial neural network (ANN) model related to the Radioisotope Stirling Generator (RSG), an 11-watt converter designed for remote power applications. Design enhancements include minor changes to improve performance, increase reliability, facilitate fabrication and assembly for limited production, and reduce mass. Innovative modifications were effected to increase performance and improve reliability of the vacuum foil insulation (VFI) package and linear alternator. High and low operating temperature acceptance testing of the Engineering Model (EM) demonstrated the robust system characteristics. These tests were conducted for 1 week of operation each, with rejector temperatures of 95 C and 20 C, respectively. Endurance testing continues for a complete Stirling converter, the Development Model (DM), with over 25,000 hours of maintenance-free operation. Endurance testing of flexures has attained over 540 flexure-years and endurance testing of linear motors/alternators has achieved nearly 27,000 hours of operation without failure. An ANN model was developed and tested successfully on the DM. Rejection temperatures were varied between 3 C and 75 C while load voltages ranged between engine stall and displacer overstroke. The trained ANN model, based solely on externally measured parameters, predicted values of piston amplitude, displacer amplitude, and piston-displacer phase angle within {+-}2% of the measured values over the entire operating regime. The ANN model demonstrated its effectiveness in the long-term evaluation of free-piston Stirling machines without adding the complexity, reduced reliability, and increased cost of sophisticated diagnostic instrumentation.

Montgomery, W.L.; Ross, B.A.; Penswick, L.B. [Stirling Technology Co., Kennewick, WA (United States)

1996-12-31T23:59:59.000Z

449

(sanitary) landfill operator  

Science Journals Connector (OSTI)

(sanitary) landfill operator, Müllkippenbetreiber m, Mülldeponiebetreiber, Kippenbetreiber, Deponiebetreiber

2014-08-01T23:59:59.000Z

450

Operations Directorate (OPS Directorate)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Operations Directorate (OPS Directorate) Operations Directorate (OPS Directorate) Purpose A group chartered by the Associate Laboratory Director for the Advanced Photon Source that includes the responsible Division Directors and other appropriate APS operations personnel. The Operations Directorate collectively coordinates operating decisions that affect the facility as a whole and establishes both long- and short-term schedules, including scheduled maintenance and facility improvement periods. The Operations Directorate is the APS forum in which decisions regarding operations are discussed: These include, but are not limited to: Safety issues related to operations Operational Schedule Global operating parameters within the defined and approved operational and safety envelopes, such as energy, maximum circulating beam

451

A way to use an induction generator in economy mode  

Science Journals Connector (OSTI)

A way to connect low-power induction generators with other independent ac sources or with ... We theoretically ground and experimentally confirm that such generators can operate under an economy mode.

P. A. Kuntsevich; G. A. Prokhorova; V. A. Gusarova

2012-04-01T23:59:59.000Z

452

Hermitian Young operators  

SciTech Connect (OSTI)

Starting from conventional Young operators, we construct Hermitian operators which project orthogonally onto irreducible representations of the (special) unitary group.

Keppeler, Stefan, E-mail: stefan.keppeler@uni-tuebingen.de [Mathematisches Institut, Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen (Germany)] [Mathematisches Institut, Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen (Germany); Sjödahl, Malin, E-mail: malin.sjodahl@thep.lu.se [Department of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, 223 62 Lund (Sweden)] [Department of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, 223 62 Lund (Sweden)

2014-02-15T23:59:59.000Z

453

Transportation Networks for Emergency Evacuations  

SciTech Connect (OSTI)

Evacuation modeling systems (EMS) have been developed to facilitate the planning, analysis, and deployment of emergency evacuation of populations at risk. For any EMS, data such as road network maps, traffic control characteristics, and population distribution play critical roles in delineating emergency zones, estimating population at risk, and determining evacuation routes. There are situations in which it is possible to plan in advance for an emergency evacuation including, for example, an explosion at a chemical processing facility or a radiological accident at a nuclear plant. In these cases, if an accident or a terrorist attack were to happen, then the best evacuation plan for the prevailing network and weather conditions would be deployed. In other instances -for example, the derailment of a train transporting hazardous materials-, there may not be any previously developed plan to be implemented and decisions must be made ad-hoc on if and how to identify and proceed with the best course of action to minimize losses. Although both cases require as a starting point the development of a transportation network model of the area at risk, which must include road capacity and topology, in the latter the available time to generate this network is extremely limited. This time constraint precludes the use of any traditional data gathering methodology and the network generation process has to rely on the use of GIS and stochastic modeling techniques. The generation of these transportation networks in real time is the focus of this entry.

Franzese, Oscar [ORNL; Liu, Cheng [ORNL

2008-01-01T23:59:59.000Z

454

Design and implementation of a prototype generator monitoring system  

E-Print Network [OSTI]

protective relays, circuit breakers, and switches. Based on this data, the system performs continuous monitoring of the electrical part of the generator and informs operators of any deviations from the normal operating conditions. The monitoring involves...

Sun, Jianyong

2012-06-07T23:59:59.000Z

455

Definition: Deferred Generation Capacity Investments | Open Energy  

Open Energy Info (EERE)

Generation Capacity Investments Generation Capacity Investments Utilities and grid operators ensure that generation capacity can serve the maximum amount of load that planning and operations forecasts indicate. The trouble is, this capacity is only required for very short periods each year, when demand peaks. Reducing peak demand and flattening the load curve should reduce the generation capacity required to service load and lead to cheaper electricity for customers.[1] Related Terms load, electricity generation, peak demand, smart grid References ↑ SmartGrid.gov 'Description of Benefits' An inl LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ine Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Deferred_Generation_Capacity_Investments&oldid=50257

456

Magnetohydrodynamic power generation, electromagnetic pumps, heat pipes, and thermionic convertors  

SciTech Connect (OSTI)

The basic principles of operation, components, and design of MHD generators, electromagnetic pumps, heat pipes and thermionic converters are described. 66 references. (WHK)

Pierson, E.S.; Bonyhady, K.A.; Dunn, P.F.; Nathenson, R.D.; Uherka, K.L.

1984-01-01T23:59:59.000Z

457

Eigenvalue Analysis of a DFIG Based Wind Power System under Different Modes of Operations  

Science Journals Connector (OSTI)

This chapter discussed the various mode of operation of the Doubly Fed Induction Generator (DFIG) based wind farm system. The impact ... on the different modes of operation for the DFIG based wind generation syst...

Y. Mishra; S. Mishra; Fangxing Li; Z. Y. Dong

2010-01-01T23:59:59.000Z

458

Annual report of waste generation and pollution prevention progress 1995  

SciTech Connect (OSTI)

This fourth Annual Report presents and analyzes 1995 DOE complex-wide waste generation and pollution prevention activities at 40 reporting sites in 25 States, and trends DOE waste generation from 1991 through 1995. DOE has established a 50% reduction goal (relative to the 1993 baseline) for routine operations radioactive and hazardous waste generation, due by December 31, 1999. Routine operations waste generation decreased 37% from 1994 to 1995, and 43% overall from 1993--1995.

NONE

1997-02-01T23:59:59.000Z

459

Energy-Efficient Networks  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Architecting and Operating Architecting and Operating Energy-Efficient Networks Inder Monga (ESnet) With input from Dan Kilper, Thierry Klein (Bell Labs) Vijay Sivaraman (UNSW, Australia) Jaafar Elmirghani (University of Leeds, UK) § Global research consortium representing industry, government and academic organizations § Launched in May 2010 § Focus on sustainability and growth § Holistic and ambitious: Goal of 1000x § 57 member organizations § 300+ leading scientists § Recognized by the World Economic Forum as an industry-led best practice toward sustainability DELIVER ARCHITECTURE, SPECIFICATIONS AND SOLUTIONS AND DEMONSTRATE KEY TECHNOLOGIES TO INCREASE NETWORK ENERGY EFFICIENCY BY A FACTOR 1000 COMPARED TO 2010 GREENTOUCH(tm) (www.greentouch.org)

460

GASIFICATION FOR DISTRIBUTED GENERATION  

SciTech Connect (OSTI)

A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

2000-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Downhole hydraulic seismic generator  

DOE Patents [OSTI]

A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

Gregory, Danny L. (Corrales, NM); Hardee, Harry C. (Albuquerque, NM); Smallwood, David O. (Albuquerque, NM)

1992-01-01T23:59:59.000Z

462

Waste Heat Recovery Power Generation with WOWGen  

E-Print Network [OSTI]

Waste Heat Recovery Power Generation with WOWGen? Business Overview WOW operates in the energy efficiency field - one of the fastest growing energy sectors in the world today. The two key products - WOWGen? and WOWClean? provide more... energy at cheaper cost and lower emissions. ? WOWGen? - Power Generation from Industrial Waste Heat ? WOWClean? - Multi Pollutant emission control system Current power generation technology uses only 35% of the energy in a fossil fuel...

Romero, M.

463

Transformation of Networks through Cognitive Approaches  

E-Print Network [OSTI]

The growth in data traffic and the increased demand for quality of service has meant current network systems need to be more efficient. The introduction of improved routing systems to meet the increasing demand and varied protocols to accommodate various scales of challenges in network efficiency has further complicated the operations. This means a better mode of intelligence had to be infused into networking for smoother operations and better autonomic features. Cognitive networks are defined and analyzed in this angle. They are identified to have the potential to deal with the future user related quality and efficiency of service at optimized levels. The cognitive elements of system like perception, learning, planning, reasoning and decision forming can enable the systems to be more aware of their environment and offer better services. These approaches are expected to transform the mode of operation of future networks.

Nair, T R Gopalakrishnan; Sooda, Kavitha

2010-01-01T23:59:59.000Z

464

A SIMD neural network processor for image processing  

Science Journals Connector (OSTI)

Artificial Neural Networks (ANNs) and image processing requires massively parallel computation of simple operator accompanied by heavy memory access. Thus, this type of operators naturally maps onto Single Instruction Multiple Data (SIMD) stream parallel ...

Dongsun Kim; Hyunsik Kim; Hongsik Kim; Gunhee Han; Duckjin Chung

2005-05-01T23:59:59.000Z

465

An Efficiency Measure for Dynamic Networks with  

E-Print Network [OSTI]

Electricity generation and distribution network Supply chain network #12;Varying Demand in Global OilVarying Demand in Global Oil DemandDemand Energy Information Administration, U.S. Department of Energy www.eia.doe.gov #12-dependent demand structures will occur on the Internet as individuals seekstructures will occur on the Internet

Nagurney, Anna

466

Understanding and Managing Generation Y  

E-Print Network [OSTI]

There are four generations in the workplace today; they consist of the Silent Generation, Baby Boom Generation, Generation X, and Generation Y. Generation Y, being the newest generation, is the least understood generation although marketers...

Wallace, Kevin

2007-12-14T23:59:59.000Z

467

Next Generation CANDU Performance Assurance  

SciTech Connect (OSTI)

AECL is developing a next generation CANDU design to meet market requirements for low cost, reliable energy supplies. The primary product development objective is to achieve a capital cost substantially lower than the current nuclear plant costs, such that the next generation plant will be competitive with alternative options for large-scale base-load electricity supply. However, other customer requirements, including safety, low-operating costs and reliable performance, are being addressed as equally important design requirements. The main focus of this paper is to address the development directions that will provide performance assurance. The next generation CANDU is an evolutionary extension of the proven CANDU 6 design. There are eight CANDU 6 units in operation in four countries around the world and further three units are under construction. These units provide a sound basis for projecting highly reliable performance for the next generation CANDU. In addition, the next generation CANDU program includes development and qualification activities that will address the new features and design extensions in the advanced plant. To limit product development risk and to enhance performance assurance, the next generation CANDU design features and performance parameters have been carefully reviewed during the concept development phase and have been deliberately selected so as to be well founded on the existing CANDU knowledge base. Planned research and development activities are required only to provide confirmation of the projected performance within a modest extension of the established database. Necessary qualification tests will be carried out within the time frame of the development program, to establish a proven design prior to the start of a construction project. This development support work coupled with ongoing AECL programs to support and enhance the performance and reliability of the existing CANDU plants will provide sound assurance that the next generation CANDU plants will meet customer expectations. (authors)

Wren, David J.; Allsop, P.J.; Hopwood, J.M. [Atomic Energy of Canada Ltd., Ontario (Canada)

2002-07-01T23:59:59.000Z

468

Oil reservoir properties estimation using neural networks  

SciTech Connect (OSTI)

This paper investigates the applicability as well as the accuracy of artificial neural networks for estimating specific parameters that describe reservoir properties based on seismic data. This approach relies on JPL`s adjoint operators general purpose neural network code to determine the best suited architecture. The authors believe that results presented in this work demonstrate that artificial neural networks produce surprisingly accurate estimates of the reservoir parameters.

Toomarian, N.B. [California Inst. of Tech., Pasadena, CA (United States); Barhen, J.; Glover, C.W. [Oak Ridge National Lab., TN (United States). Center for Engineering Systems Advanced Research; Aminzadeh, F. [UNOCAL Corp., Sugarland, TX (United States)

1997-02-01T23:59:59.000Z

469

Cognitive Radio Networks as Sensor Networks  

E-Print Network [OSTI]

is used, assuming the cognitive radios know their ownfor Embedded Networked Sensing Cognitive Radio Networks AsJ. Pottie Introduction: Cognitive Radio (CR) Networks The

Bandari, Dorna; Yang, Seung R.; Zhao, Yue; Pottie, Gregory

2007-01-01T23:59:59.000Z

470

On making energy demand and network constraints compatible in the last mile of the power grid  

Science Journals Connector (OSTI)

Abstract In the classical electricity grid power demand is nearly instantaneously matched by power supply. In this paradigm, the changes in power demand in a low voltage distribution grid are essentially nothing but a disturbance that is compensated for by control at the generators. The disadvantage of this methodology is that it necessarily leads to a transmission and distribution network that must cater for peak demand. So-called smart meters and smart grid technologies provide an opportunity to change this paradigm by using demand side energy storage to moderate instantaneous power demand so as to facilitate the supply-demand match within network limitations. A receding horizon model predictive control method can be used to implement this idea. In this paradigm demand is matched with supply, such that the required customer energy needs are met but power demand is moderated, while ensuring that power flow in the grid is maintained within the safe operating region, and in particular peak demand is limited. This enables a much higher utilisation of the available grid infrastructure, as it reduces the peak-to-base demand ratio as compared to the classical control methodology of power supply following power demand. This paper investigates this approach for matching energy demand to generation in the last mile of the power grid while maintaining all network constraints through a number of case studies involving the charging of electric vehicles in a typical suburban low voltage distribution network in Melbourne, Australia.

Iven Mareels; Julian de Hoog; Doreen Thomas; Marcus Brazil; Tansu Alpcan; Derek Jayasuriya; Valentin Müenzel; Lu Xia; Ramachandra Rao Kolluri

2014-01-01T23:59:59.000Z

471

Collaborative Networks for Biodiversity Domain Organizations  

E-Print Network [OSTI]

, conservation groups, etc., referred to in this paper as BOs (Biodiversity-domain OrganizationsCollaborative Networks for Biodiversity Domain Organizations Ekaterina Ermilova, Hamideh, operating in the domains of biology, ecology, and biodiversity, strongly need to cooperate

Boyer, Edmond

472

The São Paulo Weather Radar Network Program  

Science Journals Connector (OSTI)

A radar network to cover the State of São Paulo, Brazil, was in consideration since the pioneer efforts in radar meteorology in the country were developed in the middle 70’s with the operation of a radar at Ba...

R. V. Calheiros

1990-01-01T23:59:59.000Z

473

Characterization of Shape Memory Alloys Using Artificial Neural Networks  

E-Print Network [OSTI]

1 Characterization of Shape Memory Alloys Using Artificial Neural Networks Jim Henrickson, Kenton � Shape Memory Alloys � Artificial Neural Networks Process � Implement Shape Memory Alloy Model � Generate Training Data � Train Artificial Neural Network Results Conclusion Characterization of Shape

Valasek, John

474

.Zonal Rumor Routing for Wireless Sensor Networks Tarun Banka  

E-Print Network [OSTI]

P. Jayasumana Department of Electrical and Computer Engineering anura@engr.colostate.edu Colorado algorithms have been developed for sensor networks. Routing algorithms that flood the network with events in network broadcast, is more efficient than the flooding scheme in terms of traffic generated for query

Jayasumana, Anura P.

475

Variable Renewable Generation Impact on Operating Reserves (Presentation)  

SciTech Connect (OSTI)

This presentation describes some of NREL's latest research on grid integration of renewables, and also describes some of the tools used for these analyses.

Milligan, M.

2011-05-01T23:59:59.000Z

476

STOCHASTIC FLOW SEQUENCE GENERATION AND ASPINALL UNIT OPERATIONS  

E-Print Network [OSTI]

of the University of Colorado in partial fulfillment of the requirement for the degree of Master of Science by Professor Balaji Rajagopalan The Aspinall Unit is comprised of three reservoirs that lie on the western for the Colorado River Basin, paleo reconstructed flows dating back to the 1500's suggest that such events

477

Status of Segmented Element Thermoelectric Generator for Vehicle Waste Heat Recovery  

Broader source: Energy.gov [DOE]

Discusses progress of thermoelectric generator development at BSST and assessment of potential to enter commercial operation in vehicles

478

Synchrophasor Applications for Wind Power Generation  

SciTech Connect (OSTI)

The U.S. power industry is undertaking several initiatives that will improve the operations of the electric power grid. One of those is the implementation of wide-area measurements using phasor measurement units to dynamically monitor the operations and status of the network and provide advanced situational awareness and stability assessment. The overviews of synchrophasors and stability analyses in this report are intended to present the potential future applications of synchrophasors for power system operations under high penetrations of wind and other renewable energy sources.

Muljadi, E.; Zhang, Y. C.; Allen, A.; Singh, M.; Gevorgian, V.; Wan, Y. H.

2014-02-01T23:59:59.000Z

479

Down hole periodic seismic generator  

DOE Patents [OSTI]

A down hole periodic seismic generator system for transmitting variable frequency, predominantly shear-wave vibration into earth strata surrounding a borehole. The system comprises a unitary housing operably connected to a well head by support and electrical cabling and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a variable speed pneumatic oscillator and a self-contained pneumatic reservoir for producing a frequency-swept seismic output over a discrete frequency range.

Hardee, Harry C. (Albuquerque, NM); Hills, Richard G. (Las Cruces, NM); Striker, Richard P. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

480

Advanced downhole periodic seismic generator  

DOE Patents [OSTI]

An advanced downhole periodic seismic generator system for transmitting variable frequency, predominantly shear-wave vibration into earth strata surrounding a borehole. The system comprises a unitary housing operably connected to a well head by support and electrical cabling and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a variable speed pneumatic oscillator and a self-contained pneumatic reservoir for producing a frequency-swept seismic output over a discrete frequency range.

Hardee, Harry C. (Albuquerque, NM); Hills, Richard G. (Las Cruces, NM); Striker, Richard P. (Albuquerque, NM)

1991-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "network operations generation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Verification of Network Management System Configurations David L. Cohrs  

E-Print Network [OSTI]

Verification of Network Management System Configurations David L. Cohrs (608) 262-6617 dave domains too autonomous for this centralized approach. Distributing the network management system causes- ments. The NMSL system then operates in two roles: it verifies network management specifications

Miller, Barton P.

482

Demonstration of Energy-Neutral Operation on a WSN Testbed Using Vibration Energy Harvesting  

E-Print Network [OSTI]

. The power drawn by Motes for microcontroller operation, data transmission, listening/reception and LED AA batteries that supply the device at 10 Hz vibration and 0.6 g acceleration are exhibited. When in distributed device networks such as M2M networks and wireless sensor networks (WSNs). Often, the longevity

Uysal-Biyikoglu, Elif

483

Dynamic Whitelist Generation for Automated Response  

Broader source: Energy.gov (indexed) [DOE]

Methodology Methodology Results Dynamic Whitelist Generation for Automated Response Chris Strasburg, Josh Adams Ames Laboratory, US DOE cstras@ameslab.gov, jadams@ameslab.gov The Ames Laboratory, US DOE 1 Dynamic Whitelist Generation for Automated Response Introduction Methodology Results Outline 1 Introduction About Ames Laboratory Motivation 2 Methodology Data Classifiers Experiments 3 Results The Ames Laboratory, US DOE 2 Dynamic Whitelist Generation for Automated Response Introduction Methodology Results About Ames Laboratory Motivation Ames Physical Environment The Ames Laboratory, US DOE 3 Dynamic Whitelist Generation for Automated Response Introduction Methodology Results About Ames Laboratory Motivation Ames Network Environment The Ames Laboratory, US DOE 4 Dynamic Whitelist Generation for Automated Response Introduction Methodology Results About Ames

484

The role of hydroelectric generation in electric power systems with large scale wind generation  

E-Print Network [OSTI]

An increasing awareness of the operational challenges created by intermittent generation of electricity from policy-mandated renewable resources, such as wind and solar, has led to increased scrutiny of the public policies ...

Hagerty, John Michael

2012-01-01T23:59:59.000Z

485

Next-Generation Photovoltaic Technologies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Next-Generation Photovoltaic Next-Generation Photovoltaic Technologies Next-Generation Photovoltaic Technologies Print Monday, 06 February 2012 15:48 Organic solar cells based on the polymer/fullerene bulk heterojunction (BHJ) model represent one of the most promising technologies for next-generation solar energy conversion due to their low cost and scalability. Traditional organic photovoltaics (OPVs) are thought to have interpenetrating networks of pure polymer and fullerene layers with discrete interfaces. Researchers at Argonne National Laboratory, working with collaborators from the University of Chicago, LBNL, and NIST, used ALS Beamline 11.0.1.2 to perform resonant soft x-ray scattering (RSoXS) on PTB7/fullerene BHJ solar cells to probe performance-related structures at different length scales. These solar cells set a historic record of conversion efficiency (7.4%). The RSoXS demonstrated that the superior performance of PTB7/fullerene solar cells is attributed to surprising hierarchical nanomorphologies ranging from several nanometers of crystallites to tens of nanometers of nanocrystallite aggregates in intermixed PTB7-rich and fullerene-rich domains, themselves hundreds of nanometers in size. This work will lead the research community to rethink ideal OPV morphologies, reconsider which structures should be targeted in OPVs, and enable the rational design of even higher-performance organic solar cells.

486

CSEM WP 135 Has Restructuring Improved Operating Efficiency  

E-Print Network [OSTI]

CSEM WP 135 Has Restructuring Improved Operating Efficiency at US Electricity Generating Plants Operating Efficiency at US Electricity Generating Plants? Kira Markiewicz UC Berkeley, Haas School the smallest efficiency gains while investor-owned utility plants in restructured environments had the largest

California at Berkeley. University of

487

Network Perspectives on Communities  

E-Print Network [OSTI]

W W. Networks Fields and Organizations: Micro-Dynamics Scaleentitled “Networks, Fields and Organizations: Micro-

Wolfe, Alvin W

2006-01-01T23:59:59.000Z

488

Better networking  

Science Journals Connector (OSTI)

... world' network means that it can be crossed in a few hops. But, reports John Whitfield, it's not necessarily easy to find the best route. It's all ...

John Whitfield

2000-08-24T23:59:59.000Z

489

Network Policies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Acceptable Use Policy About ESnet Our Mission The Network ESnet History Governance & Policies ESnet Policy Board ESCC Acceptable Use Policy Facility Data Policy Career...

490

ICDF Complex Operations Waste Management Plan  

SciTech Connect (OSTI)

This Waste Management Plan functions as a management and planning tool for managing waste streams generated as a result of operations at the Idaho CERCLA Disposal Facility (ICDF) Complex. The waste management activities described in this plan support the selected remedy presented in the Waste Area Group 3, Operable Unit 3-13 Final Record of Decision for the operation of the Idaho CERCLA Disposal Facility Complex. This plan identifies the types of waste that are anticipated during operations at the Idaho CERCLA Disposal Facility Complex. In addition, this plan presents management strategies and disposition for these anticipated waste streams.

W.M. Heileson

2006-12-01T23:59:59.000Z

491

JLF Conduct of Operations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jupiter Laser Facility (JLF) Conduct Of Operations The Conduct of Operations is a set of procedures and guidelines that are put in place to ensure operational safety and security...

492

Generating multipartite entangled states of qubits distributed in different cavities  

E-Print Network [OSTI]

Cavity-based large-scale quantum information processing (QIP) needs a large number of qubits and placing all of them in a single cavity quickly runs into many fundamental and practical problems such as the increase of cavity decay rate and decrease of qubit-cavity coupling strength. Therefore, future QIP most likely will require quantum networks consisting of a large number of cavities, each hosting and coupled to multiple qubits. In this work, we propose a way to prepare a $W$-class entangled state of spatially-separated multiple qubits in different cavities, which are connected to a coupler qubit. Because no cavity photon is excited, decoherence caused by the cavity decay is greatly suppressed during the entanglement preparation. This proposal needs only one coupler qubit and one operational step, and does not require using a classical pulse, so that the engineering complexity is much reduced and the operation is greatly simplified. As an example of the experimental implementation, we further give a numerical analysis, which shows that high-fidelity generation of the $W$ state using three superconducting phase qubits each embedded in a one-dimensional transmission line resonator is feasible within the present circuit QED technique. The proposal is quite general and can be applied to accomplish the same task with other types of qubits such as superconducting flux qubits, charge qubits, quantum dots, nitrogen-vacancy centers and atoms.

Xiao-Ling He; Qi-Ping Su; Feng-Yang Zhang; Chui-Ping Yang

2014-10-12T23:59:59.000Z

493

Heat Transfer Operators Associated with Quantum Operations  

E-Print Network [OSTI]

Any quantum operation applied on a physical system is performed as a unitary transformation on a larger extended system. If the extension used is a heat bath in thermal equilibrium, the concomitant change in the state of the bath necessarily implies a heat exchange with it. The dependence of the average heat transferred to the bath on the initial state of the system can then be found from the expectation value of a hermitian operator, which is named as the heat transfer operator (HTO). The purpose of this article is the investigation of the relation between the HTOs and the associated quantum operations. Since, any given quantum operation on a system can be realized by different baths and unitaries, many different HTOs are possible for each quantum operation. On the other hand, there are also strong restrictions on the HTOs which arise from the unitarity of the transformations. The most important of these is the Landauer erasure principle. This article is concerned with the question of finding a complete set of restrictions on the HTOs that are associated with a given quantum operation. An answer to this question has been found only for a subset of quantum operations. For erasure operations, these characterizations are equivalent to the generalized Landauer erasure principle. For the case of generic quantum operations however, it appears that the HTOs obey further restrictions which cannot be obtained from the entropic restrictions of the generalized Landauer erasure principle.

Ç. Aksak; S. Turgut

2011-04-14T23:59:59.000Z

494

New generation of the SORTI instruments  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New generation of the SORTI instruments New generation of the SORTI instruments Hawat, Tom Denver University Murcray, Frank University of Denver Category: Instruments In order to generate long-term monitoring data of the atmospheric composition using SORTI instrument and integrated in the Aura validation campaign, a new instrument generation has been developed. SORTI is a Fourier Transform Spectrometer system, including an automatic solar tracker and a computer for control, data processing, and storage. SORTI is refurbished and operates to generate very high spectral resolution (~0.004 cm-1) infrared spectra (2.5 to 14 microns, 4000 to 750 cm-1) of the earth's atmosphere using the sun as the external source. The instrument enables one to perform the operation of the spectrometric atmospheric

495

The Spectrum of the Kinematic Dynamo Operator for an Ideally Conducting Fluid  

E-Print Network [OSTI]

The Spectrum of the Kinematic Dynamo Operator for an Ideally Conducting Fluid dynamo operator and of the corresponding group it generates for an ideally conducting fluid, 2001 Abstract The spectrum of the kinematic dynamo operator

Montgomery-Smith, Stephen

496

Proceedings of Office of Naval Research, September 5-6, 2004, USA Next Generation  

E-Print Network [OSTI]

harvest the benefits of current and emerging nano, micro, and macro sensors in distributed sensor networks Sensor Networks S. S. Iyengar1 , G. Seetharaman4 , R. Kannan1 , A. Durresi1 , S. Park1 , B, OH 1. ABSTRACT Distributed sensor networks operating through wireless communication offer a powerful

Durresi, Arjan

497

Next Generation Radioisotope Generators | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

» Next Generation Radioisotope Generators » Next Generation Radioisotope Generators Next Generation Radioisotope Generators Advanced Stirling Radioisotope Generator (ASRG) - The ASRG is currently being developed as a high-efficiency RPS technology to support future space missions on the Martian surface or in the vacuum of space. This system uses Stirling convertors, which have moving parts to mechanically convert heat to electricity. This power conversion system, if successfully deployed, will reduce the weight of each RPS and the amount of Pu-238 needed per mission. A HISTORY OF MISSION SUCCESSES For over fifty years, the Department of Energy has enabled space exploration on 27 missions by providing safe reliable radioistope power systems and radioisotope heater units for NASA, Navy and Air Force.

498

Washington DC Reliability Requirements and the Need to Operate Mirant's  

Broader source: Energy.gov (indexed) [DOE]

Washington DC Reliability Requirements and the Need to Operate Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005) Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005) Pursuant to Docket No. EO-05-01: Oak Ridge National Laboratory provided an analysis of the Mirant Potomac River Generation Station in 2005 and discussed the reliability requirements of the local area and the potential impacts on reliability of changing operation of the Potomac River Generating Station in this paper. Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability.pdf

499

On Stochastic Generators of Completely Positive Cocycles  

E-Print Network [OSTI]

A characterisation of the generators of quantum stochastic cocycles of completely positive (CP) maps is given in terms of the complete dissipativity (CD) of its form-generator. The pseudo-Hilbert dilation of the stochastic form-generator and the pre-Hilbert dilation of the corresponding dissipator is found. The general form of the linear continuous structural maps for the algebra of all bounded operators is derived and the quantum stochastic flow for the corresponding cocycle is outlined. It is proved that any w*-analytical bounded CD form-generator give rise to a quantum stochastic CP cocycle over a von Neumann algebra.

V. P. Belavkin

2005-12-12T23:59:59.000Z

500

Partial Discharge Location using Unsynchronized Radiometer Network for Condition Monitoring in HV Substations - A Proposed Approach  

Science Journals Connector (OSTI)

A location estimation system for online Partial Discharge (PD) detection is proposed as a low-cost approach to real-time condition monitoring, asset management and operation optimization in future smart grid. Some early progress in the development of subsystems (specifically the antenna, radiometer device, PD emulator and PD generator) for a proof-of-principle prototype system is described. The proposed PD Wireless Sensor Network (WSN) uses a novel approach to PD location which obviates the need for synchronization between sensors thereby improving scalability.

J M R de Souza Neto (IEEE member); E C T de Macedo; J S da Rocha Neto (IEEE senior member); E G da Costa; S A Bhatti; I A Glover

2012-01-01T23:59:59.000Z