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Sample records for greystone power grid

  1. GreyStone Power- Photovoltaic Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    GreyStone Power, an electricity cooperative in Georgia, offers a rebate for solar photovoltaic (PV) systems to members. The one-time rebate is offered for PV installations that are interconnected...

  2. GreyStone Power- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    GreyStone Power, an electricity cooperative serving 103,000 customers in Georgia, introduced a solar water heating rebate in March 2009. This $500 rebate is available to customers regardless of...

  3. FUTURE POWER GRID INITIATIVE GridOPTICSTM

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE GridOPTICSTM : A Software Framework for Power System Operations technologies needed to support the operations and planning of the future power grid » provide a framework to the GridPACK numerical library that is being developed in the Future Power Grid Initiative APPROACH

  4. Metagenomics Smart power grid

    E-Print Network [OSTI]

    Metagenomics Smart power grid The new weapons workhorse Laser on Mars LOS ALAMOS SCIENCE'll read about a unique collaboration to create a "smart" power grid to accommodate an increasing, TECHNOLOGY, AND ENGINEERING 2 8 14 Dynamic Vision DARHT FULFILLS ITS DESTINY Solar Smart Grid in the Atomic

  5. Metagenomics Smart power grid

    E-Print Network [OSTI]

    Metagenomics Smart power grid The new weapons workhorse Laser on Mars LOS ALAMOS SCIENCE'll read about a unique collaboration to create a "smart" power grid to accommodate an increasing, and plans to modify an enzyme to grow renewable biofuels and mitigate carbon emissions from power plants

  6. FUTURE POWER GRID INITIATIVE Future Power Grid

    E-Print Network [OSTI]

    of all 16 machines damped quickly ­ improved frequency performance » AGC ensures tie line power flows on the Electricity Infrastructure Operations Center (EIOC), the Pacific Northwest National Laboratory's (PNNL) national electric grid research facility, the FPGI will advance the science and develop the technologies

  7. FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking,

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking, Equipment, and Technology (powerNET) Testbed OBJECTIVE A lot of interest in research, improvements, and testing surrounds the power grid to bear on the challenges of the power grid Therefore, a community resource is needed to enable needed

  8. FUTURE POWER GRID INITIATIVE GridPACK: Grid Parallel Advanced

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE GridPACK: Grid Parallel Advanced Computational Kernels OBJECTIVE The U Pacific Northwest National Laboratory (509) 375-3899 bruce.palmer@pnnl.gov ABOUT FPGI The Future Power and ensure a more secure, efficient and reliable future grid. Building on the Electricity Infrastructure

  9. Grid Simulator for Power Quality Assessment of Micro-Grids

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    1 Grid Simulator for Power Quality Assessment of Micro-Grids Joaqu´in Eloy-Garc´iaa , Juan C of the simulator. Finally, a case study is presented by testing a micro-grid. Index Terms Grid Simulator, Power for power quality assessment of micro-grids". Published in IET Power Electronics. doi: 10.1049/iet-pel.2012

  10. 2014 Modern Power Grid Video

    SciTech Connect (OSTI)

    2014-06-02

    A video from NETL that describes the details of a modern power grid and how it can help our nation save on energy costs.

  11. 2014 Modern Power Grid Video

    ScienceCinema (OSTI)

    None

    2014-07-22

    A video from NETL that describes the details of a modern power grid and how it can help our nation save on energy costs.

  12. Large power grid analysis using domain decomposition

    E-Print Network [OSTI]

    Mohanram, Kartik

    Large power grid analysis using domain decomposition Quming Zhou, Kai Sun, Kartik Mohanram, Danny C referred to as the power grid. The power grid for a modern integrated circuit may consist of several grid is traditionally described as a large-scale linear system. Simulation of power grids usually

  13. Parallel Simulation for VLSI Power Grid 

    E-Print Network [OSTI]

    Zhang, Le

    2015-07-23

    Due to the increasing complexity of VLSI circuits, power grid simulation has become more and more time-consuming. Hence, there is a need for fast and accurate power grid simulator. In order to perform power grid simulation ...

  14. POWER GRID RELIABILITY AND SECURITY

    SciTech Connect (OSTI)

    Bose, Anjan; Venkatasubramanian, Vaithianathan; Hauser, Carl; Bakken, David; Anderson, David; Zhao, Chuanlin; Liu, Dong; Yang, Tao; Meng, Ming; Zhang, Lin; Ning, Jiawei; Tashman, Zaid

    2014-09-30

    This project has led to the development of a real-time simulation platform for electric power grids called Grid Simulator or GridSim for simulating the dynamic and information network interactions of large- scale power systems. The platform consists of physical models of power system components including synchronous generators, loads and control, which are simulated using a modified commercial power simulator namely Transient Stability Analysis Tool (TSAT) [1] together with data cleanup components, as well as an emulated substation level and wide-area power analysis components. The platform also includes realistic representations of communication network middleware that can emulate the real-time information flow back and forth between substations and control centers in wide-area power systems. The platform has been validated on a realistic 6000-bus model of the western American power system. The simulator GridSim developed in this project is the first of its kind in its ability to simulate real-time response of large-scale power grids, and serves as a cost effective real-time stability and control simulation platform for power industry.

  15. Enhancing Power Grid Stability through Analytics

    E-Print Network [OSTI]

    Lakoba, Taras I.

    Enhancing Power Grid Stability through Analytics: Information is Power, and Power is Information no dummies). · But... many challenges in the North American power grid revolve around coordinating? Power is Information · Refrain in many quarters of the power grid today says that we must "extract

  16. FUTURE POWER GRID INITIATIVE Intelligent Networked Sensors

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Intelligent Networked Sensors Capable of Autonomous, Adaptive from the rest of the power grid and reconnect and synchronize without loss of functionality FOCUS AREA Power Grid Initiative (FPGI) will deliver next-generation concepts and tools for grid operation

  17. FUTURE POWER GRID INITIATIVE Next Generation Network

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Next Generation Network Simulations for Power System Applications resources. To operate the future power grids, these will need to take into account: » the integration (509) 372-6575 jason.fuller@pnnl.gov ABOUT FPGI The Future Power Grid Initiative (FPGI) will deliver

  18. Transdisciplinary electric power grid science

    E-Print Network [OSTI]

    Brummitt, Charles D; Dobson, Ian; Moore, Cristopher; D'Souza, Raissa M

    2013-01-01

    The 20th-century engineering feat that most improved the quality of human life, the electric power system, now faces discipline-spanning challenges that threaten that distinction. So multilayered and complex that they resemble ecosystems, power grids face risks from their interdependent cyber, physical, social and economic layers. Only with a holistic understanding of the dynamics of electricity infrastructure and human operators, automatic controls, electricity markets, weather, climate and policy can we fortify worldwide access to electricity.

  19. GreyStone Power Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:Resources JumpStrategy | OpenGreshamGrey

  20. Incremental Power Grid Verification ECE Department

    E-Print Network [OSTI]

    Najm, Farid N.

    Incremental Power Grid Verification Abhishek ECE Department University of Toronto Toronto, Ontario, Canada f.najm@utoronto.ca ABSTRACT Verification of the on-die power grid is a key step in the design General Terms Performance, Algorithms, Verification Keywords Power Grid, voltage drop 1. INTRODUCTION

  1. Role of Power Grid in Side Channel Attack and Power-Grid-Aware Secure Design

    E-Print Network [OSTI]

    Bhunia, Swarup

    Role of Power Grid in Side Channel Attack and Power-Grid-Aware Secure Design Xinmu Wang1 , Wen Yueh on the operating frequency due to RLC structure of a power grid. In this paper, we analyze the ef- fect of power grid on SCA and provide quantitative results to demonstrate the frequency-dependent SCA resistance due

  2. Energy Storage for the Power Grid

    ScienceCinema (OSTI)

    Wang, Wei; Imhoff, Carl; Vaishnav, Dave

    2014-06-12

    The iron vanadium redox flow battery was developed by researchers at Pacific Northwest National Laboratory as a solution to large-scale energy storage for the power grid.

  3. Energy Storage for the Power Grid

    SciTech Connect (OSTI)

    Wang, Wei; Imhoff, Carl; Vaishnav, Dave

    2014-04-23

    The iron vanadium redox flow battery was developed by researchers at Pacific Northwest National Laboratory as a solution to large-scale energy storage for the power grid.

  4. Mitigating cascading failures in interdependent power grids and communication networks

    E-Print Network [OSTI]

    Parandehgheibi, Marzieh

    We study the interdependency between the power grid and the communication network used to control the grid. A communication node depends on the power grid in order to receive power for operation, and a power node depends ...

  5. Statistical Analysis for On-Chip Power Grid Networks and Interconnects Considering Process Variation

    E-Print Network [OSTI]

    Mi, Ning

    2009-01-01

    2 Background and Related Models Variational Power GridOn-chip Power Grid Network Models . . . . . . . . . .Power Grid Models Considered Process

  6. A Vectorless Framework for Power Grid Electromigration Checking

    E-Print Network [OSTI]

    Najm, Farid N.

    A Vectorless Framework for Power Grid Electromigration Checking Mohammad Fawaz Department of ECE, instead of the traditional series model. Keywords Power grid, Electromigration, Verification, Redundancy, Opti- mization 1. INTRODUCTION Power grid verification has become an essential step in modern

  7. Spontaneous synchrony in power-grid networks

    E-Print Network [OSTI]

    Motter, Adilson E; Anghel, Marian; Nishikawa, Takashi

    2013-01-01

    An imperative condition for the functioning of a power-grid network is that its power generators remain synchronized. Disturbances can prompt desynchronization, which is a process that has been involved in large power outages. Here we derive a condition under which the desired synchronous state of a power grid is stable, and use this condition to identify tunable parameters of the generators that are determinants of spontaneous synchronization. Our analysis gives rise to an approach to specify parameter assignments that can enhance synchronization of any given network, which we demonstrate for a selection of both test systems and real power grids. Because our results concern spontaneous synchronization, they are relevant both for reducing dependence on conventional control devices, thus offering an additional layer of protection given that most power outages involve equipment or operational errors, and for contributing to the development of "smart grids" that can recover from failures in real time.

  8. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    is connected to a power grid, the frequency is regulated bywith regional or national power grids calls for standardizedisland to the mainland power grid. The solar systems, which

  9. Dairyland Power Cooperative Comments on Smart Grid RFI: Addressing...

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

    Dairyland Power Cooperative Comments on Smart Grid RFI: Addressing Policy and Logistical Challenges Dairyland Power Cooperative Comments on Smart Grid RFI: Addressing Policy and...

  10. Electric Power Industry Needs for Grid-Scale Storage Applications...

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

    Electric Power Industry Needs for Grid-Scale Storage Applications Electric Power Industry Needs for Grid-Scale Storage Applications Stationary energy storage technologies will...

  11. Introduction The electric power grid and electric power

    E-Print Network [OSTI]

    Introduction The electric power grid and electric power industry are undergoing a dramatic transforma- tion. By linking information technologies with the electric power grid--to provide "electricity the standards process that will allow the many pieces of "the world's largest and most complex machine" to work

  12. FUTURE POWER GRID INITIATIVE Scalable Sensor Data

    E-Print Network [OSTI]

    to the characteristic power grid data and application » Distributed over multiple machines for further scalability on the Electricity Infrastructure Operations Center (EIOC), the Pacific Northwest National Laboratory's (PNNL) national electric grid research facility, the FPGI will advance the science and develop the technologies

  13. Power Grid Voltage Integrity Verification Department of ECE

    E-Print Network [OSTI]

    Najm, Farid N.

    Power Grid Voltage Integrity Verification Maha Nizam Department of ECE University of Toronto devgan@magma-da.com ABSTRACT Full-chip verification requires one to check if the power grid is safe, i of the circuit attached to the grid, thereby precluding early verification of the grid. We propose a power grid

  14. Generating Circuit Current Constraints to Guarantee Power Grid Safety

    E-Print Network [OSTI]

    Najm, Farid N.

    Generating Circuit Current Constraints to Guarantee Power Grid Safety Zahi Moudallal ECE Dept, as well as power grid-aware placement and floorplanning. We give a rigorous problem definition and develop of power grids is a necessity in modern chip design. We will use the term "power grid" to refer to either

  15. The Vermont-Sandia Smart Grid Partnership Powering the Future: The Vermont Smart Grid and Beyond

    E-Print Network [OSTI]

    Hayden, Nancy J.

    The Vermont-Sandia Smart Grid Partnership Powering the Future: The Vermont Smart Grid and Beyond BURLINGTON SHERATON HOTEL & CONFERENCE CENTER MAY Laboratories 9:10-10:15 a.m. Opening Plenary: The Vermont-Sandia Smart Grid

  16. Redundancy-Aware Electromigration Checking for Mesh Power Grids

    E-Print Network [OSTI]

    Najm, Farid N.

    Redundancy-Aware Electromigration Checking for Mesh Power Grids Sandeep Chatterjee ECE Department-emerging as a significant problem in modern integrated circuits (IC). Especially in power grids, due to shrinking wire the reliability of the grid by considering it entirely as a series system. However, a power grid with its many

  17. FUTURE POWER GRID INITIATIVE An Intelligent Agent Platform

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE VOLTTRONTM : An Intelligent Agent Platform for the Smart Grid Two-way Power Flows n Decentralized Control To Support Micro-Grids And Islanding n Enable Load, not developed past simulation, and/or do not fit the requirements of the power grid. VOLTTRON has become

  18. FUTURE POWER GRID INITIATIVE Decision Support for Future

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Decision Support for Future Power Grid Organizations OBJECTIVE Northwest National Laboratory (509) 371-6607 angela.dalton@pnnl.gov ABOUT FPGI The Future Power Grid a more secure, efficient and reliable future grid. Building on the Electricity Infrastructure Operations

  19. Fast Algorithms for Power Grid Analysis Based on Effective Resistance

    E-Print Network [OSTI]

    Friedman, Eby G.

    Fast Algorithms for Power Grid Analysis Based on Effective Resistance Selc¸uk K¨ose and Eby G method significantly outperforms previously proposed power grid analysis techniques in terms and the impedance of the power grid. The effective resistance between any two nodes in a uniform grid structure has

  20. Multigridlike Technique for Power Grid Analysis Joseph N. Kozhaya

    E-Print Network [OSTI]

    Najm, Farid N.

    Multigrid­like Technique for Power Grid Analysis Joseph N. Kozhaya University of Illinois, Urbana­micron VLSI designs include huge power grids that are required to distribute large amounts of current, at in a novel multigrid­like technique for the analysis of power grids. The grid is reduced to a coarser

  1. Visual Analytics for Power Grid Contingency Analysis

    SciTech Connect (OSTI)

    Wong, Pak C.; Huang, Zhenyu; Chen, Yousu; Mackey, Patrick S.; Jin, Shuangshuang

    2014-01-20

    Contingency analysis is the process of employing different measures to model scenarios, analyze them, and then derive the best response to remove the threats. This application paper focuses on a class of contingency analysis problems found in the power grid management system. A power grid is a geographically distributed interconnected transmission network that transmits and delivers electricity from generators to end users. The power grid contingency analysis problem is increasingly important because of both the growing size of the underlying raw data that need to be analyzed and the urgency to deliver working solutions in an aggressive timeframe. Failure to do so may bring significant financial, economic, and security impacts to all parties involved and the society at large. The paper presents a scalable visual analytics pipeline that transforms about 100 million contingency scenarios to a manageable size and form for grid operators to examine different scenarios and come up with preventive or mitigation strategies to address the problems in a predictive and timely manner. Great attention is given to the computational scalability, information scalability, visual scalability, and display scalability issues surrounding the data analytics pipeline. Most of the large-scale computation requirements of our work are conducted on a Cray XMT multi-threaded parallel computer. The paper demonstrates a number of examples using western North American power grid models and data.

  2. A network approach for power grid robustness against cascading failures

    E-Print Network [OSTI]

    Wang, Xiangrong; Kooij, Robert E; Van Mieghem, Piet

    2015-01-01

    Cascading failures are one of the main reasons for blackouts in electrical power grids. Stable power supply requires a robust design of the power grid topology. Currently, the impact of the grid structure on the grid robustness is mainly assessed by purely topological metrics, that fail to capture the fundamental properties of the electrical power grids such as power flow allocation according to Kirchhoff's laws. This paper deploys the effective graph resistance as a metric to relate the topology of a grid to its robustness against cascading failures. Specifically, the effective graph resistance is deployed as a metric for network expansions (by means of transmission line additions) of an existing power grid. Four strategies based on network properties are investigated to optimize the effective graph resistance, accordingly to improve the robustness, of a given power grid at a low computational complexity. Experimental results suggest the existence of Braess's paradox in power grids: bringing an additional li...

  3. NASA's Information Power Grid William E. Johnston, Project Manager

    E-Print Network [OSTI]

    NASA's Information Power Grid William E. Johnston, Project Manager Arsi Vaziri, Deputy Project that Grids and Web Services combined represent as powerful a new tool for accessing and managing distributed and Data Grids? · Grids are technology and an emerging architecture that involve several types

  4. FUTURE POWER GRID INITIATIVE Modeling of Distributed Energy

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Modeling of Distributed Energy Resources in the Smart Grid OBJECTIVE can be used in the studies for the design, operation and control of the future smart grid. Our project National Laboratory (509) 375-2235 shuai.lu@pnnl.gov ABOUT FPGI The Future Power Grid Initiative (FPGI

  5. Power Grid Defense Against Malicious Cascading Failure

    E-Print Network [OSTI]

    Shakarian, Paulo; Lindelauf, Roy

    2014-01-01

    An adversary looking to disrupt a power grid may look to target certain substations and sources of power generation to initiate a cascading failure that maximizes the number of customers without electricity. This is particularly an important concern when the enemy has the capability to launch cyber-attacks as practical concerns (i.e. avoiding disruption of service, presence of legacy systems, etc.) may hinder security. Hence, a defender can harden the security posture at certain power stations but may lack the time and resources to do this for the entire power grid. We model a power grid as a graph and introduce the cascading failure game in which both the defender and attacker choose a subset of power stations such as to minimize (maximize) the number of consumers having access to producers of power. We formalize problems for identifying both mixed and deterministic strategies for both players, prove complexity results under a variety of different scenarios, identify tractable cases, and develop algorithms f...

  6. FUTURE POWER GRID INITIATIVE A Statistical State Prediction

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE A Statistical State Prediction Methodology to Improve Reliability and Efficiency of Power Grid Simulation OBJECTIVE This project aims to develop a short-term prediction in a power system state predictor at grid level, which cannot only predict power system behaviors, but also

  7. FUTURE POWER GRID INITIATIVE Linear Algebra Solvers and

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Linear Algebra Solvers and Associated Matrix-Vector Kernels for Power of power grid systems. As the future power grid system becomes more complex and as more model variability are used to accurately represent the future system, determining the stability security margins will become

  8. FUTURE POWER GRID INITIATIVE Market Design Analysis Tool

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Market Design Analysis Tool OBJECTIVE Power market design plays to efficiently attain a desired future state of the power grid APPROACH The project will develop two mechanisms rules to attain a desired future state of power grid. » use MDI to modify the market clearing mechanism

  9. Early-stage Power Grid Analysis for Uncertain Working Modes

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    Early-stage Power Grid Analysis for Uncertain Working Modes Haifeng Qian Department of ECE circuits are now reaching the 100-plus watt regime, and power delivery and power grid signal integrity have and Design Aids General Terms Algorithms, Performance, Design, Reliability Keywords Power grid, Supply

  10. Energy Storage for the Power Grid

    SciTech Connect (OSTI)

    Imhoff, Carl; Vaishnav, Dave

    2014-07-01

    The iron vanadium redox flow battery was developed by researchers at Pacific Northwest National Laboratory as a solution to large-scale energy storage for the power grid. This technology provides the energy industry and the nation with a reliable, stable, safe, and low-cost storage alternative for a cleaner, efficient energy future.

  11. A Hybrid Network IDS for Protective Digital Relays in the Power Transmission Grid

    E-Print Network [OSTI]

    Koutsandria, Georgia; Muthukumar, Vishak; Parvania, Masood; Peisert, Sean; McParland, Chuck; Scaglione, Anna

    2014-01-01

    controllers that implement power grid protection schemes. Insuch as those in the power grid, including “Supervisory andmajor components of the power grid, and presents several key

  12. Regulation and investment under uncertainty: An application to power grid interconnection

    E-Print Network [OSTI]

    Saphores, Jean-Daniel M; Gravel, E; Bernard, J T

    2004-01-01

    An Application to Power Grid Interconnection. Jean-Danielto the Ontario power grid. This interconnection will allowfor our application to a power grid interconnection. Second,

  13. Energy System Development inAfrica: The case of grid and off-grid power inKenya

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Energy System Development inAfrica: The case of grid and off-grid power inKenya By Katherine Deaton Development inAfrica: The case of grid and off-grid power inKenya Energy System Development inAfrica: The case of grid and off-grid power in Kenya by Katherine Steel Submitted to the Engineering Systems Division

  14. Islanded Grid Wind Power Conference | Department of Energy

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

    Islanded Grid Wind Power Conference Islanded Grid Wind Power Conference March 4, 2015 8:00AM AKST to March 6, 2015 5:00PM AKST Alaska Pacific University 4101 University Drive...

  15. FUTURE POWER GRID INITIATIVE Real-time High-Performance

    E-Print Network [OSTI]

    #12;» System will support time-critical power grid applications (PMU data rate: every 30ms) » Flexible

  16. Real Time Simulation of Power Grid Disruptions

    SciTech Connect (OSTI)

    Chinthavali, Supriya; Dimitrovski, Aleksandar D; Fernandez, Steven J; Groer, Christopher S; Nutaro, James J; Olama, Mohammed M; Omitaomu, Olufemi A; Shankar, Mallikarjun; Spafford, Kyle L; Vacaliuc, Bogdan

    2012-11-01

    DOE-OE and DOE-SC workshops (Reference 1-3) identified the key power grid problem that requires insight addressable by the next generation of exascale computing is coupling of real-time data streams (1-2 TB per hour) as the streams are ingested to dynamic models. These models would then identify predicted disruptions in time (2-4 seconds) to trigger the smart grid s self healing functions. This project attempted to establish the feasibility of this approach and defined the scientific issues, and demonstrated example solutions to important smart grid simulation problems. These objectives were accomplished by 1) using the existing frequency recorders on the national grid to establish a representative and scalable real-time data stream; 2) invoking ORNL signature identification algorithms; 3) modeling dynamically a representative region of the Eastern interconnect using an institutional cluster, measuring the scalability and computational benchmarks for a national capability; and 4) constructing a prototype simulation for the system s concept of smart grid deployment. The delivered ORNL enduring capability included: 1) data processing and simulation metrics to design a national capability justifying exascale applications; 2) Software and intellectual property built around the example solutions; 3) demonstrated dynamic models to design few second self-healing.

  17. FUTURE POWER GRID INITIATIVE Actionable Visualization Tools for

    E-Print Network [OSTI]

    » integrate information from domains external to the power industry (e.g., weather) with power grid of the power grid: e.g., weather, political/social, cyber, etc. This integrated functionality is supported, efficient and reliable future grid. Building on the Electricity Infrastructure Operations Center (EIOC

  18. Stochastic Power Grid Analysis Considering Process Variations Praveen Ghanta

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Stochastic Power Grid Analysis Considering Process Variations Praveen Ghanta Sarma Vrudhula of interconnect and de- vice process variations on voltage fluctuations in power grids. We consider random variations in the power grid's electrical parame- ters as spatial stochastic processes and propose a new

  19. CyberPhysical System Security for the Electric Power Grid

    E-Print Network [OSTI]

    Manimaran, Govindarasu

    INVITED P A P E R Cyber­Physical System Security for the Electric Power Grid Control in power for the power grid as the functional composition of the following: 1) the physical Manuscript received June 29 | The development of a trustworthy smart grid requires a deeper understanding of potential impacts resulting from

  20. Transportation Center Seminar........ "Overview of Power Grid Research at Argonne

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Transportation Center Seminar........ "Overview of Power Grid Research at Argonne National is the first U.S. DOE national laboratory. Argonne has been engaged in power grid related research for over thirty years. In this talk, I will give an overview of the research activities on power grid at Argonne

  1. Efficient RC Power Grid Verification Using Node Elimination

    E-Print Network [OSTI]

    Najm, Farid N.

    Efficient RC Power Grid Verification Using Node Elimination Ankit Goyal Department of ECE to reduce the size of power grids but their fo- cus is more on simulation. In verification, we are concerned. This paper pro- poses a novel approach to systematically reduce the power grid and accurately compute

  2. Hierarchical Random-walk Algorithms for Power Grid Analysis

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    Hierarchical Random-walk Algorithms for Power Grid Analysis Haifeng Qian Sachin S. Sapatnekar Minneapolis, MN 55414 qianhf@ece.umn.edu sachin@ece.umn.edu Abstract-- This paper presents a power grid an- bond power grid, for which the performance of the generic method degrades, is solved in 75.88 seconds

  3. Early Power Grid Verification Under Circuit Current Uncertainties

    E-Print Network [OSTI]

    Najm, Farid N.

    Early Power Grid Verification Under Circuit Current Uncertainties Imad A. Ferzli Department of ECE Eindhoven, The Netherlands lars@magma-da.com ABSTRACT As power grid safety becomes increasingly important in modern integrated circuits, so does the need to start power grid verifica- tion early in the design cycle

  4. Reliable and Scalable Communication for the Power Grid

    E-Print Network [OSTI]

    Mueller, Frank

    Reliable and Scalable Communication for the Power Grid Christopher Zimmer, Frank Mueller Abstract Future smart power grids require constant data availability for actuation of control decisions. The job topologies of smart devices that enable multi-route discovery in an intelligent power grid. This is ac

  5. TECH FORUM: [VERIFIED RTL TO GATES] Efficient RC power grid

    E-Print Network [OSTI]

    Najm, Farid N.

    TECH FORUM: [VERIFIED RTL TO GATES] Efficient RC power grid verification using node elimination proposes a novel approach to systematically reduce the power grid and accurately compute an upper bound on the voltage drops at power grid nodes that are retained. Furthermore, acriterion for the safety of nodes

  6. Incremental Partitioning-Based Vectorless Power Grid Verification

    E-Print Network [OSTI]

    Najm, Farid N.

    Incremental Partitioning-Based Vectorless Power Grid Verification Dionysios Kouroussis Department performance of a chip, design verification of the power grid is of critical importance. This paper builds the efficient verification of local power grid sections or blocks, enabling incremen- tal design analysis

  7. Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique

    E-Print Network [OSTI]

    Najm, Farid N.

    Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique Nahi H. Abdul Ghani Department of ECE University of Toronto Toronto, Ontario, Canada f.najm@utoronto.ca ABSTRACT Power grid Aids General Terms Performance, Algorithms, Verification Keywords Power grid, voltage drop, approximate

  8. Power Grid Correction Using Sensitivity Analysis Meric Aydonat

    E-Print Network [OSTI]

    Najm, Farid N.

    Power Grid Correction Using Sensitivity Analysis Meric¸ Aydonat Department of ECE University University of Toronto Toronto, Ontario, Canada E-mail: f.najm@utoronto.ca Abstract--Power grid voltage verification has become a crucial step in reliable high-speed chip design. Power grid verification

  9. Index Terms --Smart grid; power engineering education; power engineering curriculum; power engineering re-

    E-Print Network [OSTI]

    1 Index Terms -- Smart grid; power engineering education; power engineering curriculum; power engineering re- sources; power engineering workforce. Abstract -- A widely supported effort to modernize the United States power system has led to an engineering initiative va- riously known as `smart grid

  10. Machine Learning for the New York City Power Grid

    E-Print Network [OSTI]

    Rudin, Cynthia

    1 Machine Learning for the New York City Power Grid Cynthia Rudin, David Waltz, Roger N. Anderson are sufficiently accurate to assist in maintaining New York City's electrical grid. Index Terms--applications of machine learning, electrical grid, smart grid, knowledge discovery, supervised ranking, computational

  11. EMPORA 1 + 2 EMobile Power Austria (Smart Grid Project) (Salzburg...

    Open Energy Info (EERE)

    EMPORA 1 + 2 EMobile Power Austria (Smart Grid Project) (Salzburg, Austria) Jump to: navigation, search Project Name EMPORA 1 + 2 EMobile Power Austria Country Austria Headquarters...

  12. In the OSTI Collections: Keeping Power Grids Stable | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    methods help gauge their influence on the grid's stability to power fluctuations. (b) The green plane represents deviations from the forecast of power output from two...

  13. Power Grid Vulnerability to Geographically Correlated Failures

    E-Print Network [OSTI]

    Shepard, Kenneth

    potential locations for grid monitoring, and hence, will have impact on the deployment of the smart-grid

  14. Structural Vulnerability Analysis of Electric Power Distribution Grids

    E-Print Network [OSTI]

    Koc, Yakup; Warnier, Martijn; Kumar, Tarun

    2015-01-01

    Power grid outages cause huge economical and societal costs. Disruptions in the power distribution grid are responsible for a significant fraction of electric power unavailability to customers. The impact of extreme weather conditions, continuously increasing demand, and the over-ageing of assets in the grid, deteriorates the safety of electric power delivery in the near future. It is this dependence on electric power that necessitates further research in the power distribution grid security assessment. Thus measures to analyze the robustness characteristics and to identify vulnerabilities as they exist in the grid are of utmost importance. This research investigates exactly those concepts- the vulnerability and robustness of power distribution grids from a topological point of view, and proposes a metric to quantify them with respect to assets in a distribution grid. Real-world data is used to demonstrate the applicability of the proposed metric as a tool to assess the criticality of assets in a distribution...

  15. Application of smart grid in photovoltaic power systems, ForskEL...

    Open Energy Info (EERE)

    Application of smart grid in photovoltaic power systems, ForskEL (Smart Grid Project) Jump to: navigation, search Project Name Application of smart grid in photovoltaic power...

  16. Statistical classification of cascading failures in power grids

    E-Print Network [OSTI]

    Pfitzner, Rene

    We introduce a new microscopic model of the outages in transmission power grids. This model accounts for the automatic response of the grid to load fluctuations that take place on the scale of minutes, when the optimum ...

  17. POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS

    SciTech Connect (OSTI)

    Ray, C.; Huang, Z.

    2007-01-01

    Prony Analysis is a technique used to decompose a signal into a series consisting of weighted complex exponentials and promises to be an effi cient way of recognizing sensitive lines during faults in power systems such as the U.S. Power grid. Positive Sequence Load Flow (PSLF) was used to simulate the performance of a simple two-area-four-generator system and the reaction of the system during a line fault. The Dynamic System Identifi cation (DSI) Toolbox was used to perform Prony analysis and use modal information to identify key transmission lines for power fl ow adjustment to improve system damping. The success of the application of Prony analysis methods to the data obtained from PSLF is reported, and the key transmission line for adjustment is identifi ed. Future work will focus on larger systems and improving the current algorithms to deal with networks such as large portions of the Western Electricity Coordinating Council (WECC) power grid.

  18. Journal of Power Sources xxx (2005) xxxxxx Vehicle-to-grid power implementation: From stabilizing the

    E-Print Network [OSTI]

    Firestone, Jeremy

    2005-01-01

    Journal of Power Sources xxx (2005) xxx­xxx Vehicle-to-grid power implementation: From stabilizing December 2004 Abstract Vehicle-to-grid power (V2G) uses electric-drive vehicles (battery, fuel cell; Vehicle-to-grid power; Ancillary services; Renewable energy; Wind power 1. Introduction This article

  19. Coordination of Cloud Computing and Smart Power Grids

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    Coordination of Cloud Computing and Smart Power Grids Amir-Hamed Mohsenian-Rad and Alberto Leon analysis in smart grid and explain how these problems can be related. Simulation results based centers, and smart grid are illustrated in Fig. 1. On the one hand, data centers are key elements

  20. NREL: News - INL and NREL Demonstrate Power Grid Simulation at...

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

    Bookmark and Share Printable Version News Release NR-1915 INL and NREL Demonstrate Power Grid Simulation at a Distance Capability makes national laboratory assets accessible...

  1. Journal of Power Sources xxx (2005) xxxxxx Vehicle-to-grid power fundamentals: Calculating capacity

    E-Print Network [OSTI]

    Firestone, Jeremy

    2005-01-01

    Journal of Power Sources xxx (2005) xxx­xxx Vehicle-to-grid power fundamentals: Calculating opens for "vehicle-to-grid" (V2G) power. This article defines the three vehicle types that can produce V. This article develops equations to calculate the capacity for grid power from three types of electric drive

  2. Sixth Northwest Conservation and Electric Power Plan Appendix K: The Smart Grid

    E-Print Network [OSTI]

    Sixth Northwest Conservation and Electric Power Plan Appendix K: The Smart Grid Introduction..................................................................................................................................... 1 Components of the Smart Grid.............................................................................................................. 2 Benefits from the Smart grid

  3. Impact of network topology on synchrony of oscillatory power grids

    SciTech Connect (OSTI)

    Rohden, Martin; Sorge, Andreas; Witthaut, Dirk; Timme, Marc; Faculty of Physics, Georg August Universität Göttingen, Göttingen

    2014-03-15

    Replacing conventional power sources by renewable sources in current power grids drastically alters their structure and functionality. In particular, power generation in the resulting grid will be far more decentralized, with a distinctly different topology. Here, we analyze the impact of grid topologies on spontaneous synchronization, considering regular, random, and small-world topologies and focusing on the influence of decentralization. We model the consumers and sources of the power grid as second order oscillators. First, we analyze the global dynamics of the simplest non-trivial (two-node) network that exhibit a synchronous (normal operation) state, a limit cycle (power outage), and coexistence of both. Second, we estimate stability thresholds for the collective dynamics of small network motifs, in particular, star-like networks and regular grid motifs. For larger networks, we numerically investigate decentralization scenarios finding that decentralization itself may support power grids in exhibiting a stable state for lower transmission line capacities. Decentralization may thus be beneficial for power grids, regardless of the details of their resulting topology. Regular grids show a specific sharper transition not found for random or small-world grids.

  4. Cascade Failures from Distributed Generation in Power Grids

    E-Print Network [OSTI]

    Scala, Antonio; Scoglio, Caterina

    2012-01-01

    Power grids are nowadays experiencing a transformation due to the introduction of Distributed Generation based on Renewable Sources. At difference with classical Distributed Generation, where local power sources mitigate anomalous user consumption peaks, Renewable Sources introduce in the grid intrinsically erratic power inputs. By introducing a simple schematic (but realistic) model for power grids with stochastic distributed generation, we study the effects of erratic sources on the robustness of several IEEE power grid test networks with up to 2000 buses. We find that increasing the penetration of erratic sources causes the grid to fail with a sharp transition. We compare such results with the case of failures caused by the natural increasing power demand.

  5. Adaptive Energy Forecasting and Information Diffusion for Smart Power Grids

    E-Print Network [OSTI]

    Hwang, Kai

    1 Adaptive Energy Forecasting and Information Diffusion for Smart Power Grids Yogesh Simmhan. One of the characteristic applications of Smart Grids is demand response optimization (DR). The goal of DR is to use the power consumption time series data to reliable forecast the future consumption

  6. PNNL Future Power Grid Initiative-developed GridOPTICS Software System (GOSS)

    SciTech Connect (OSTI)

    2014-11-03

    The power grid is changing and evolving. One aspect of this change is the growing use of smart meters and other devices, which are producing large volumes of useful data. However, in many cases, the data can’t be translated quickly into actionable guidance to improve grid performance. There's a need for innovative tools. The GridOPTICS(TM) Software System, or GOSS, developed through PNNL's Future Power Grid Initiative, is open source and became publicly available in spring 2014. The value of this middleware is that it easily integrates grid applications with sources of data and facilitates communication between them. Such a capability provides a foundation for developing a range of applications to improve grid management.

  7. Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles as Resources for Distributed Electric Power in California

    E-Print Network [OSTI]

    Kempton, Willett; Tomic, Jasna; Letendre, Steven; Brooks, Alec; Lipman, Timothy

    2001-01-01

    and of the electric power grid, yet analysts, industries,be realized only if the power grid operator has control overplugged in when the power grid needs them. A. The California

  8. ECE 437/537 -Smart Grid Catalog Description: Fundamentals of smart power grids. Technology advances in transmission

    E-Print Network [OSTI]

    ECE 437/537 - Smart Grid Catalog Description: Fundamentals of smart power grids. Technology advances in transmission and distribution systems. Policy drivers. Assets and demand management. Smart grid Cotilla-Sanchez Course content: · Introduction to smart power grids. Technology and policy background

  9. RTDS-Based Design and Simulation of Distributed P-Q Power Resources in Smart Grid

    E-Print Network [OSTI]

    Taylor, Zachariah David

    2014-01-01

    Danish island of Bornholm power grid," in Proc. of the IEEEsimulate the operation of power grid more accurately. In [performance of the power distribution grid in at least four

  10. Assessing I-Grid(TM) web-based monitoring for power quality and reliability benchmarking

    E-Print Network [OSTI]

    Divan, Deepak; Brumsickle, William; Eto, Joseph

    2003-01-01

    not affect the regional power grid. Page 7 of 10 January 23,Paradigm in Distribution Grid Power Quality And ReliabilitySheehan 2002]. The I-Grid power quality and reliability

  11. prismprismNo 258/February 2011 Smarter Grid reSearch centre powerS up

    E-Print Network [OSTI]

    Mottram, Nigel

    prismprismNo 258/February 2011 Smarter Grid reSearch centre powerS up The University has unveiled' technologies, from advanced power grids to electric cars and household appliances. The Power Network companies including ScottishPower and Scottish and Southern Energy, with support from Scottish Enterprise

  12. Florida Power and Light Comments on Smart Grid Request For Information...

    Office of Environmental Management (EM)

    Florida Power and Light Comments on Smart Grid Request For Information (RFI): Addressing Policy & Logistical Challenges. Florida Power and Light Comments on Smart Grid Request For...

  13. Architecture of the Florida Power Grid as a Complex Network

    E-Print Network [OSTI]

    Xu, Yan; Rikvold, Per Arne

    2013-01-01

    We study the Florida high-voltage power grid as a technological network embedded in space. Measurements of geographical lengths of transmission lines, the mixing of generators and loads, the weighted clustering coefficient, as well as the organization of edge conductance weights show a complex architecture quite different from random-graph models usually considered. In particular, we introduce a parametrized mixing matrix to characterize the mixing pattern of generators and loads in the Florida Grid, which is intermediate between the random mixing case and the semi-bipartite case where generator-generator transmission lines are forbidden. Our observations motivate an investigation of optimization (design) principles leading to the structural organization of power grids. We thus propose two network optimization models for the Florida Grid as a case study. Our results show that the Florida Grid is optimized not only by reducing the construction cost (measured by the total length of power lines), but also throug...

  14. Comparative analysis of existing models for power-grid synchronization

    E-Print Network [OSTI]

    Nishikawa, Takashi

    2015-01-01

    The dynamics of power-grid networks is becoming an increasingly active area of research within the physics and network science communities. The results from such studies are typically insightful and illustrative, but are often based on simplifying assumptions that can be either difficult to assess or not fully justified for realistic applications. Here we perform a comprehensive comparative analysis of three leading models recently used to study synchronization dynamics in power-grid networks -- a fundamental problem of practical significance given that frequency synchronization of all power generators in the same interconnection is a necessary condition for a power grid to operate. We show that each of these models can be derived from first principles within a common framework based on the classical model of a generator, thereby clarifying all assumptions involved. This framework allows us to view power grids as complex networks of coupled second-order phase oscillators with both forcing and damping terms. U...

  15. GridPACK Toolkit for Developing Power Grid Simulations on High Performance Computing Platforms

    SciTech Connect (OSTI)

    Palmer, Bruce J.; Perkins, William A.; Glass, Kevin A.; Chen, Yousu; Jin, Shuangshuang; Callahan, Charles D.

    2013-11-30

    This paper describes the GridPACK™ framework, which is designed to help power grid engineers develop modeling software capable of running on todays high performance computers. The framework contains modules for setting up distributed power grid networks, assigning buses and branches with arbitrary behaviors to the network, creating distributed matrices and vectors, using parallel linear and non-linear solvers to solve algebraic equations, and mapping functionality to create matrices and vectors based on properties of the network. In addition, the framework contains additional functionality to support IO and to manage errors.

  16. Statistical Estimation of Leakage-Induced Power Grid Voltage Drop Considering Within-Die Process Variations

    E-Print Network [OSTI]

    Najm, Farid N.

    Statistical Estimation of Leakage-Induced Power Grid Voltage Drop Considering Within-Die Process the power grid, the grid develops large voltage drops, which is an unavoidable background level of noise on the grid. We develop techniques for estimation of the statistics of the leakage-induced power grid voltage

  17. Statistical Estimation of LeakageInduced Power Grid Voltage Drop Considering WithinDie Process Variations #

    E-Print Network [OSTI]

    Najm, Farid N.

    Statistical Estimation of Leakage­Induced Power Grid Voltage Drop Considering Within­Die Process the power grid, the grid develops large voltage drops, which is an unavoidable background level of noise on the grid. We develop techniques for estimation of the statistics of the leakage­induced power grid voltage

  18. Transforming Power Grid Operations via High Performance Computing

    SciTech Connect (OSTI)

    Huang, Zhenyu; Nieplocha, Jarek

    2008-07-31

    Past power grid blackout events revealed the adequacy of grid operations in responding to adverse situations partially due to low computational efficiency in grid operation functions. High performance computing (HPC) provides a promising solution to this problem. HPC applications in power grid computation also become necessary to take advantage of parallel computing platforms as the computer industry is undergoing a significant change from the traditional single-processor environment to an era for multi-processor computing platforms. HPC applications to power grid operations are multi-fold. HPC can improve today’s grid operation functions like state estimation and contingency analysis and reduce the solution time from minutes to seconds, comparable to SCADA measurement cycles. HPC also enables the integration of dynamic analysis into real-time grid operations. Dynamic state estimation, look-ahead dynamic simulation and real-time dynamic contingency analysis can be implemented and would be three key dynamic functions in future control centers. HPC applications call for better decision support tools, which also need HPC support to handle large volume of data and large number of cases. Given the complexity of the grid and the sheer number of possible configurations, HPC is considered to be an indispensible element in the next generation control centers.

  19. Demonstration of HVAC chiller control for power grid frequency regulation

    E-Print Network [OSTI]

    Su, Po-An (Po-An Leo)

    2015-01-01

    Secondary frequency regulation is a necessary electric grid ancillary service that balances electric power system supply and demand on short time intervals of seconds to minutes. Commercial HVAC chillers may be well ...

  20. Power conversion architecture for grid interface at high switching frequency

    E-Print Network [OSTI]

    Lim, Seungbum

    This paper presents a new power conversion architecture for single-phase grid interface. The proposed architecture is suitable for realizing miniaturized ac-dc converters operating at high frequencies (HF, above 3 MHz) and ...

  1. Machine Learning for the New York City Power Grid

    E-Print Network [OSTI]

    Rudin, Cynthia

    Power companies can benefit from the use of knowledge discovery methods and statistical machine learning for preventive maintenance. We introduce a general process for transforming historical electrical grid data into ...

  2. Integration of decentralized generators with the electric power grid

    E-Print Network [OSTI]

    Finger, Susan

    1981-01-01

    This report develops a new methodology for studying the economic interaction of customer-owned electrical generators with the central electric power grid. The purpose of the report is to study the reciprocal effects of the ...

  3. Efficient algorithm for online N - 2 power grid contingency selection

    E-Print Network [OSTI]

    Kaplunovich, Petr A. (Petr Alexandrovich)

    2014-01-01

    Multiple element outages (N - k contingencies) have caused some of the most massive blackouts and disturbances in the power grid. Such outages affect millions of people and cost the world economy billions of dollars annually. ...

  4. REAP Islanded Grid Wind Power Conference

    Broader source: Energy.gov [DOE]

    Hosted by Renewable Energy Alaska Project, this three-day conference will show attendees how to learn, network, and share information on wind systems in island and islanded grid environments through expert panel discussions, stakeholder dialogue, and training.

  5. REAP Islanded Grid Wind Power Conference

    Broader source: Energy.gov [DOE]

    Hosted by Renewable Energy Alaska Project, this three-day conference will show attendees how to learn, network, and share information on wind systems in island and islanded grid environments...

  6. A Real-Time Testbed Environment for Cyber-Physical Security on the Power Grid

    E-Print Network [OSTI]

    Koutsandria, Georgia; Gentz, Reinhard; Jamei, Mahdi; Peisert, Sean; Scaglione, Anna; McParland, Chuck

    2015-01-01

    Physical Security on the Power Grid Georgia KoutsandriaSecurity Testbeds: Architecture, Application, and Evaluation for Smart Grid.and security of cyber-physical systems (CPSs), such as the power grid,

  7. Renewable Energy Penetration on the power Grid Fall / 2010

    E-Print Network [OSTI]

    Stuart, Steven J.

    ECE 420 Renewable Energy Penetration on the power Grid Fall / 2010 Instructor: Dr. E. B. Makram: TBA Text: Renewable Energy Systems M. Godoy Simoes and Felix A. Farret Attendance: Test attendance): Principles of Renewable Sources of Energy and Electric Power: basic definitions of electrical power

  8. Evaluating Machine Learning for Improving Power Grid Reliability Leon Wu leon@cs.columbia.edu

    E-Print Network [OSTI]

    Rudin, Cynthia

    as the electrical grid morphs into the "smart grid" will require innovations in how we assess the state of the grid and intelligent electricity distribution and trans- mission system, i.e., power grid. The smart grid has been (Force, 2010). Without the smart grid, many emerging clean energy technologies such as electric ve

  9. False Data Injection Attacks against State Estimation in Electric Power Grids

    E-Print Network [OSTI]

    Young, R. Michael

    @cs.unc.edu Abstract--A power grid is a complex system connecting electric power generators to consumers through power estimate the power grid state through analysis of meter measure- ments and power system models. Various malicious attacks. I. INTRODUCTION A power grid is a complex system connecting a variety of electric power

  10. Cascade Failure in a Phase Model of Power Grids

    E-Print Network [OSTI]

    Sakaguchi, Hidetsugu

    2012-01-01

    We propose a phase model to study cascade failure in power grids composed of generators and loads. If the power demand is below a critical value, the model system of power grids maintains the standard frequency by feedback control. On the other hand, if the power demand exceeds the critical value, an electric failure occurs via step out (loss of synchronization) or voltage collapse. The two failures are incorporated as two removal rules of generator nodes and load nodes. We perform direct numerical simulation of the phase model on a scale-free network and compare the results with a mean-field approximation.

  11. A Static PatternIndependent Technique for Power Grid Voltage Integrity Verification #

    E-Print Network [OSTI]

    Najm, Farid N.

    A Static Pattern­Independent Technique for Power Grid Voltage Integrity Verification # Dionysios Design verification must include the power grid. Checking that the voltage on the power grid does) the obviously large size of the power grids for modern high­performance chips, and ii) the di#culty of setting

  12. Overview of Vectorless/Early Power Grid Verification Special Session Paper

    E-Print Network [OSTI]

    Najm, Farid N.

    Overview of Vectorless/Early Power Grid Verification Special Session Paper Farid N. Najm ECE. In many cases, and certainly during early power grid design, they may be simply unknown because as the package/board parasitic RLC components, as simply the power grid. A well-designed power grid should guaran

  13. Statistical Estimation of Circuit Timing Vulnerability Due to Leakage-Induced Power Grid Voltage Drop

    E-Print Network [OSTI]

    Najm, Farid N.

    Statistical Estimation of Circuit Timing Vulnerability Due to Leakage-Induced Power Grid Voltage voltage drops on the power grid that can affect circuit timing. We propose a statistical analysis supply voltage to circuit devices is referred to as the power grid. The consequences of power grid

  14. Integrated Retail and Wholesale Power System Operation with Smart-Grid Functionality

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Integrated Retail and Wholesale Power System Operation with Smart-Grid Functionality Dionysios of retail and wholesale power markets operating over transmission and distribution networks with smart-grid with "smart-grid functionality." By smart-grid functionality we mean service-oriented grid enhancements

  15. Data Quality Assurance and Performance Measurement of Data Mining for Preventive Maintenance of Power Grid

    E-Print Network [OSTI]

    Rudin, Cynthia

    Ensuring reliability as the electrical grid morphs into the "smart grid" will require innovations in how we version of NOVA has been deployed for the power grid in New York City, and it is able to eval- uate- able and intelligent electricity distribution and transmission system, i.e., power grid. The smart grid

  16. FUTURE POWER GRID INITIATIVE A Multi-layer Data-Driven

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE A Multi-layer Data-Driven Advanced Reasoning Tool for Smart Grid.zhou@pnnl.gov AbouT FpGI The Future Power Grid Initiative (FPGI) will deliver next-generation concepts and tools for grid operation and planning and ensure a more secure, efficient and reliable future grid. Building

  17. For the Grid and Through the Grid: The Role of Power Line Communications in the Smart Grid

    E-Print Network [OSTI]

    Galli, Stefano; Wang, Zhifang

    2010-01-01

    Is Power Line Communication (PLC) a good candidate for Smart Grid applications? The objective of this paper is to address this important question. To do so we provide an overview of what PLC can deliver today by surveying its history and describing the most recent technological advances in the area. We then address Smart Grid applications as instances of sensor networking and network control problems and discuss the main conclusion one can draw from the literature on these subjects. The application scenario of PLC within the Smart Grid is then analyzed in detail. Since a necessary ingredient of network planning is modeling, we also discuss two aspects of engineering modeling that relate to our question. The first aspect is modeling the PLC channel through fading models. The second aspect we review is the Smart Grid control and traffic modeling problem which allows us to achieve a better understanding of the communications requirements. Finally, this paper reports recent studies on the electrical and topologic...

  18. Enhancing Power Grid Stability through Analytics

    E-Print Network [OSTI]

    Lakoba, Taras I.

    exploit renewable resources: wind in great plains, solar in southwest. #12;C.L. DeMarco University-Data" Acknowledgements: · Work supported by National Science Foundation and Department of Energy, in collaboration 23, 2013 8 Voltage Instability · Motivation: among challenges to reliable grid operation is avoidance

  19. Power Jobs: The Smart Grid Workforce

    Broader source: Energy.gov [DOE]

    “Really anyone who likes science or math, we’ve probably got a job for you,” said Justin Johnson, Senior Director of Engineering at Oncor, one of the country’s largest transmission and distribution utilities based in Dallas, Texas. Find out more about the exciting career opportunities smart grid technology is offering.

  20. Wide-area situation awareness in electric power grid

    SciTech Connect (OSTI)

    Greitzer, Frank L.

    2010-04-28

    Two primary elements of the US energy policy are demand management and efficiency and renewable sources. Major objectives are clean energy transmission and integration, reliable energy transmission, and grid cyber security. Development of the Smart Grid seeks to achieve these goals by lowering energy costs for consumers, achieving energy independence and reducing greenhouse gas emissions. The Smart Grid is expected to enable real time wide-area situation awareness (SA) for operators. Requirements for wide-area SA have been identified among interoperability standards proposed by the Federal Energy Regulatory Commission and the National Institute of Standards and Technology to ensure smart-grid functionality. Wide-area SA and enhanced decision support and visualization tools are key elements in the transformation to the Smart Grid. This paper discusses human factors research to promote SA in the electric power grid and the Smart Grid. Topics that will be discussed include the role of human factors in meeting US energy policy goals, the impact and challenges for Smart Grid development, and cyber security challenges.

  1. False Data Injection Attacks against State Estimation in Electric Power Grids

    E-Print Network [OSTI]

    Reiter, Michael

    @cs.unc.edu ABSTRACT A power grid is a complex system connecting electric power generators to consumers through power estimate the power grid state through analysis of meter measurements and power system models. Various using IEEE test systems. Our results indicate that security protection of the electric power grid must

  2. Prepping Power Engineers for the Smart Grid

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration and Washington State University have designed a special program that’s preparing the power workforce for the nation’s smarter energy future.

  3. Wind and Solar on the Power Grid: Myths and Misperceptions, Greening...

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

    SOLAR ON THE POWER GRID: MYTHS AND MISPERCEPTIONS GREENING THE GRID Wind and solar are inherently more variable and uncertain than the traditional dispatchable thermal and hydro...

  4. Social Networking Reduces Peak Power Consumption in Smart Grid

    E-Print Network [OSTI]

    Wu, Dapeng Oliver

    in buildings represents approximately 74% of the nation's electricity consumption [1]. However, electricity the peak power consumption of schedulable jobs of electrical appliances of users under de- lay requirements1 Social Networking Reduces Peak Power Consumption in Smart Grid Qiuyuan Huang, Xin Li, Jing Zhao

  5. Solar Power and the Electric Grid, Energy Analysis (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-03-01

    In today's electricity generation system, different resources make different contributions to the electricity grid. This fact sheet illustrates the roles of distributed and centralized renewable energy technologies, particularly solar power, and how they will contribute to the future electricity system. The advantages of a diversified mix of power generation systems are highlighted.

  6. THE SPACE POWER GRID Narayanan Komerath, Nicholas Boechler

    E-Print Network [OSTI]

    the constellation with satellites augmented with solar collectors and converters. In Phase 3, large, ultra-light solar collectors in medium-height orbits (a few thousand Figure 1: Phases of the Space Power Grid 1: Augmented satellites: A-SPG 4. Phase 3: Ultralight collector beams sunlight to SPG: Full Space Solar Power

  7. How Stochastic Network Calculus Concepts Help Green the Power Grid

    E-Print Network [OSTI]

    Wierman, Adam

    . on a grid-scale battery project for renewable energy storage, which will lead to the development of a power@tsinghua.edu.cn Abstract--The renewable energy generation such as solar and wind will constitute an important part and build a stochastic model for the power supply reliability with different renewable energy configurations

  8. Management of a Smart Grid with Controlled-Delivery of Discrete Power Levels

    E-Print Network [OSTI]

    Rojas-Cessa, Roberto

    Management of a Smart Grid with Controlled-Delivery of Discrete Power Levels Roberto Rojas to power amounts. These two properties, although functional and practical, expose the grid to overload as a controlled-delivery power grid. In this grid, the customer's addresses are embedded in the electrical signal

  9. A MultiPhase Power Flow Model for Grid Analysis A. P. Sakis Meliopoulos

    E-Print Network [OSTI]

    A MultiPhase Power Flow Model for µµµµGrid Analysis A. P. Sakis Meliopoulos School of Electrical power system with distributed energy sources forming a microgrid (µGrid). The µGrid is a radial multiphase power flow analysis method that provides exact solution to the operation of the µGrid under steady

  10. Multigrid-like Technique for Power Grid Analysis Joseph N. Kozhaya

    E-Print Network [OSTI]

    Najm, Farid N.

    Multigrid-like Technique for Power Grid Analysis Joseph N. Kozhaya University of Illinois, Urbana-micron VLSI designs include huge power grids that are required to distribute large amounts of current, at in a novel multigrid-like technique for the analysis of power grids. The grid is reduced to a coarser

  11. Power Grid Correction Using Sensitivity Analysis Under an Pamela Al Haddad

    E-Print Network [OSTI]

    Najm, Farid N.

    Power Grid Correction Using Sensitivity Analysis Under an RC Model Pamela Al Haddad Department of the power grid requires one to check if the steady state voltage drops on all the nodes of the grid do]: Integrated Circuits--Design Aids General Terms Algorithms, Verification Keywords Power Grid, voltage drop

  12. A Static Pattern-Independent Technique for Power Grid Voltage Integrity Verification

    E-Print Network [OSTI]

    Najm, Farid N.

    by the circuit off the grid. The current waveforms of these current sources may be determined by a priorA Static Pattern-Independent Technique for Power Grid Voltage Integrity Verification Dionysios Design verification must include the power grid. Checking that the voltage on the power grid does

  13. Protecting Intelligent Distributed Power Grids against Cyber Attacks

    SciTech Connect (OSTI)

    Dong Wei; Yan Lu; Mohsen Jafari; Paul Skare; Kenneth Rohde

    2010-12-31

    Like other industrial sectors, the electrical power industry is facing challenges involved with the increasing demand for interconnected operations and control. The electrical industry has largely been restructured due to deregulation of the electrical market and the trend of the Smart Grid. This moves new automation systems from being proprietary and closed to the current state of Information Technology (IT) being highly interconnected and open. However, while gaining all of the scale and performance benefits of IT, existing IT security challenges are acquired as well. The power grid automation network has inherent security risks due to the fact that the systems and applications for the power grid were not originally designed for the general IT environment. In this paper, we propose a conceptual layered framework for protecting power grid automation systems against cyber attacks. The following factors are taken into account: (1) integration with existing, legacy systems in a non-intrusive fashion; (2) desirable performance in terms of modularity, scalability, extendibility, and manageability; (3) alignment to the 'Roadmap to Secure Control Systems in the Energy Sector' and the future smart grid. The on-site system test of the developed prototype security system is briefly presented as well.

  14. Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors fluctuations in the generator power. This paper deals with power smoothing control of grid connected MCT system a smoothed grid-injected power in case of swell disturbances. Index Terms-Marine current turbine, power

  15. False Data Injection Attacks against State Estimation in Electric Power Grids

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    False Data Injection Attacks against State Estimation in Electric Power Grids Yao Liu, Peng Ning@cs.unc.edu Abstract--A power grid is a complex system connecting electric power generators to consumers through power to ensure the reliable operation of power grids, and state estimation is used in system monitoring to best

  16. Greenbench: A Benchmark for Observing Power Grid Vulnerability Under Data-Centric Threats

    E-Print Network [OSTI]

    Wang, Wenye

    Greenbench: A Benchmark for Observing Power Grid Vulnerability Under Data-Centric Threats Mingkui- grates communication networks into traditional power grid. This integration, however, makes the power and applications. But in power grid, these data-centric attacks may result in instable power systems, and further

  17. GridOPTICS(TM) A Novel Software Framework for Integrating Power Grid Data Storage, Management and Analysis

    SciTech Connect (OSTI)

    Gorton, Ian; Yin, Jian; Akyol, Bora A.; Ciraci, Selim; Critchlow, Terence; Liu, Yan; Gibson, Tara D.; Purohit, Sumit; Sharma, Poorva; Vlachopoulou, Maria

    2013-01-09

    This paper describes the architecture and design of GridOPTICSTM, a novel software framework to integrate a collection of software tools developed by PNNL’s Future Power Grid Initiative (FPGI) into a coherent, powerful operations and planning tool for the power grid of the future. GridOPTICSTM enables plug-and-play of various analysis, modeling and visualization software tools for fast and accurate control of the power grid. To bridge the data access for different control purposes, GridOPTICSTM provides a scalable and thin layer of event processing that hides the complexity of data storage and management. The initial prototype of GridOPTICSTM was demonstrated with several use cases from PNNL’s FPGI.

  18. Centrality Fingerprints for Power Grid Network Growth Models

    E-Print Network [OSTI]

    Gurfinkel, Aleks Jacob; Rikvold, Per Arne

    2015-01-01

    In our previous work, we have shown that many of the properties of the Florida power grid are reproduced by deterministic network growth models based on the minimization of energy dissipation $E_\\mathrm{diss}$. As there is no $a~ priori$ best $E_\\mathrm{diss}$ minimizing growth model, we here present a tool, called the "centrality fingerprint," for probing the behavior of different growth models. The centrality fingerprints are comparisons of the current flow into/out of the network with the values of various centrality measures calculated at every step of the growth process. Finally, we discuss applications to the Maryland power grid.

  19. IEEE TRANSACTIONS ON SMART GRID, VOL. 5, NO. 1, JANUARY 2014 303 Opportunistic Routing for Smart Grid With Power

    E-Print Network [OSTI]

    Bahk, Saewoong

    IEEE TRANSACTIONS ON SMART GRID, VOL. 5, NO. 1, JANUARY 2014 303 Opportunistic Routing for Smart communications (PLCs) have recently absorbed interest in the smart grid since they offer communi- cation--Access network, narrowband PLC, opportunistic routing, power line communications, smart grid. I. INTRODUCTION

  20. Reinforcing Power Grid Transmission with FACTS Devices

    E-Print Network [OSTI]

    Frolov, Vladimir; Chertkov, Misha

    2013-01-01

    We explore optimization methods for planning the placement, sizing and operations of Flexible Alternating Current Transmission System (FACTS) devices installed into the grid to relieve congestion created by load growth or fluctuations of intermittent renewable generation. We limit our selection of FACTS devices to those that can be represented by modification of the inductance of the transmission lines. Our master optimization problem minimizes the $l_1$ norm of the FACTS-associated inductance correction subject to constraints enforcing that no line of the system exceeds its thermal limit. We develop off-line heuristics that reduce this non-convex optimization to a succession of Linear Programs (LP) where at each step the constraints are linearized analytically around the current operating point. The algorithm is accelerated further with a version of the cutting plane method greatly reducing the number of active constraints during the optimization, while checking feasibility of the non-active constraints post...

  1. A Sensemaking Perspective on Situation Awareness in Power Grid Operations

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Schur, Anne; Paget, Mia L.; Guttromson, Ross T.

    2008-07-21

    With increasing complexity and interconnectivity of the electric power grid, the scope and complexity of grid operations continues to grow. New paradigms are needed to guide research to improve operations by enhancing situation awareness of operators. Research on human factors/situation awareness is described within a taxonomy of tools and approaches that address different levels of cognitive processing. While user interface features and visualization approaches represent the predominant focus of human factors studies of situation awareness, this paper argues that a complementary level, sensemaking, deserves further consideration by designers of decision support systems for power grid operations. A sensemaking perspective on situation aware-ness may reveal new insights that complement ongoing human factors research, where the focus of the investigation of errors is to understand why the decision makers experienced the situation the way they did, or why what they saw made sense to them at the time.

  2. Risk-Mitigated Optimal Power Flow for Wind Powered Grids Emma Sjodin, Dennice F. Gayme and Ufuk Topcu

    E-Print Network [OSTI]

    Wierman, Adam

    Risk-Mitigated Optimal Power Flow for Wind Powered Grids Emma Sj¨odin, Dennice F. Gayme and Ufuk." High grid penetrations of solar or wind power pose a number of operational challenges and it is widely is the use of large-scale grid-integrated energy storage. The role of energy storage in power systems has

  3. An impedance profile of a commercial power grid and a tester power distribution system is developed in this paper.

    E-Print Network [OSTI]

    Plusquellic, James

    Abstract An impedance profile of a commercial power grid and a tester power distribution system transient signals generated by a chip. Several resistance-capacitance (RC) models of the power grid testing environment is then developed. The impedance profile of the combined probe card and the power grid

  4. Integrated Retail and Wholesale (IRW) Power System Operations with Smart-Grid Functionality

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Integrated Retail and Wholesale (IRW) Power System Operations with Smart-Grid Functionality Leigh-NE, MISO, XM, RTE, MEC IRW Project: Integrated Retail/Wholesale Power System Operation with Smart-Grid Functionality 3 #12;4 Meaning of "Smart Grid Functionality"? For our project purposes: Smart-grid functionality

  5. Smart Grid The New and Improved Power Grid: A Survey Xi Fang, Student Member, IEEE, Satyajayant Misra, Member, IEEE, Guoliang Xue, Fellow, IEEE,

    E-Print Network [OSTI]

    Misra, Satyajayant

    Smart Grid ­ The New and Improved Power Grid: A Survey Xi Fang, Student Member, IEEE, Satyajayant--The Smart Grid, regarded as the next generation power grid, uses two-way flows of electricity the literature till 2011 on the enabling technologies for the Smart Grid. We explore three major systems, namely

  6. Large-Scale Data Challenges in Future Power Grids

    SciTech Connect (OSTI)

    Yin, Jian; Sharma, Poorva; Gorton, Ian; Akyol, Bora A.

    2013-03-25

    This paper describes technical challenges in supporting large-scale real-time data analysis for future power grid systems and discusses various design options to address these challenges. Even though the existing U.S. power grid has served the nation remarkably well over the last 120 years, big changes are in the horizon. The widespread deployment of renewable generation, smart grid controls, energy storage, plug-in hybrids, and new conducting materials will require fundamental changes in the operational concepts and principal components. The whole system becomes highly dynamic and needs constant adjustments based on real time data. Even though millions of sensors such as phase measurement units (PMUs) and smart meters are being widely deployed, a data layer that can support this amount of data in real time is needed. Unlike the data fabric in cloud services, the data layer for smart grids must address some unique challenges. This layer must be scalable to support millions of sensors and a large number of diverse applications and still provide real time guarantees. Moreover, the system needs to be highly reliable and highly secure because the power grid is a critical piece of infrastructure. No existing systems can satisfy all the requirements at the same time. We examine various design options. In particular, we explore the special characteristics of power grid data to meet both scalability and quality of service requirements. Our initial prototype can improve performance by orders of magnitude over existing general-purpose systems. The prototype was demonstrated with several use cases from PNNL’s FPGI and was shown to be able to integrate huge amount of data from a large number of sensors and a diverse set of applications.

  7. Ultrafast Power Processor for Smart Grid Power Module Development

    SciTech Connect (OSTI)

    MAITRA, ARINDAM; LITWIN, RAY; lai, Jason; Syracuse, David

    2012-12-30

    This project’s goal was to increase the switching speed and decrease the losses of the power semiconductor devices and power switch modules necessary to enable Smart Grid energy flow and control equipment such as the Ultra-Fast Power Processor. The primary focus of this project involves exploiting the new silicon-based Super-GTO (SGTO) technology and build on prototype modules already being developed. The prototype super gate-turn-off thyristor (SGTO) has been tested fully under continuously conducting and double-pulse hard-switching conditions for conduction and switching characteristics evaluation. The conduction voltage drop measurement results indicate that SGTO has excellent conduction characteristics despite inconsistency among some prototype devices. Tests were conducted with two conditions: (1) fixed gate voltage and varying anode current condition, and (2) fixed anode current and varying gate voltage condition. The conduction voltage drop is relatively a constant under different gate voltage condition. In terms of voltage drop as a function of the load current, there is a fixed voltage drop about 0.5V under zero current condition, and then the voltage drop is linearly increased with the current. For a 5-kV voltage blocking device that may operate under 2.5-kV condition, the projected voltage drop is less than 2.5 V under 50-A condition, or 0.1%. If the device is adopted in a converter operating under soft-switching condition, then the converter can achieve an ultrahigh efficiency, typically above 99%. The two-pulse switching test results indicate that SGTO switching speed is very fast. The switching loss is relatively low as compared to that of the insulated-gate-bipolar-transistors (IGBTs). A special phenomenon needs to be noted is such a fast switching speed for the high-voltage switching tends to create an unexpected C?dv/dt current, which reduces the turn-on loss because the dv/dt is negative and increases the turn-off loss because the dv/dt is positive. As a result, the turn-on loss at low current is quite low, and the turn-off loss at low current is relatively high. The phenomenon was verified with junction capacitance measurement along with the dv/dt calculation. Under 2-kV test condition, the turn-on and turn-off losses at 25-A is about 3 and 9 mJ, respectively. As compared to a 4.5-kV, 60-A rated IGBT, which has turn-on and turn-off losses about 25 and 20 mJ under similar test condition, the SGTO shows significant switching loss reduction. The switching loss depends on the switching frequency, but under hard-switching condition, the SGTO is favored to the IGBT device. The only concern is during low current turn-on condition, there is a voltage bump that can translate to significant power loss and associated heat. The reason for such a current bump is not known from this study. It is necessary that the device manufacturer perform though test and provide the answer so the user can properly apply SGTO in pulse-width-modulated (PWM) converter and inverter applications.

  8. On the Role of Power-Grid and Communication-System Interdependencies on Cascading Failures

    E-Print Network [OSTI]

    Hayat, Majeed M.

    On the Role of Power-Grid and Communication- System Interdependencies on Cascading Failures Mahshid Abstract--The mutual functional dependencies between a power grid and its supporting communication system consider the dependency of the communication system on the power grid for its power supply. By embedding

  9. Inductive Characteristics of Power Distribution Grids in High Speed Integrated Circuits

    E-Print Network [OSTI]

    Friedman, Eby G.

    Inductive Characteristics of Power Distribution Grids in High Speed Integrated Circuits Andrey V characteristics of several types of gridded power distribution networks are described in this paper interconnect. In power distribution grids with alternating power and ground lines, the inductance is shown

  10. The Impact of the Topology on Cascading Failures in a Power Grid Model

    E-Print Network [OSTI]

    Van Mieghem, Piet

    The Impact of the Topology on Cascading Failures in a Power Grid Model Yakup Koça,1 Martijn scale blackouts in power trans- mission grids. Secure electrical power supply requires, together with careful operation, a robust design of the electrical power grid topology. Currently, the impact

  11. Application of Centrality Measures of Complex Network Framework in Power Grid

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Application of Centrality Measures of Complex Network Framework in Power Grid A. B. M. Nasiruzzaman of the power grid. In this paper three distinct measures of centrality are presented and they are described Typically a system like power grid consists of power plants, transformers, transmission lines, distribution

  12. Cyber Security for Power Grids Frank Mueller, Subhashish Bhattacharya, Christopher Zimmer

    E-Print Network [OSTI]

    Mueller, Frank

    Cyber Security for Power Grids Frank Mueller, Subhashish Bhattacharya, Christopher Zimmer Dept security challenges for a fu- ture power grid. It highlights deficiencies and shortcom- ings of existing and fault resilience of power as a utility must be a prime objective for power grids. Security compromises

  13. Survivable Systems Analysis of the North American Power Grid Communications Infrastructure 1,2

    E-Print Network [OSTI]

    Krings, Axel W.

    {patrickm, krings, oman} @cs.uidaho.edu Abstract The modern electric power grid is a complex interconnected American electric power grid and propose appropriate means to mediate them. The analytic technique Systems Analysis 1. Introduction An electric power grid is a complex interconnected network of power

  14. Power Grid Data Analysis with R and Hadoop

    SciTech Connect (OSTI)

    Hafen, Ryan P.; Gibson, Tara D.; Kleese van Dam, Kerstin; Critchlow, Terence J.

    2014-01-01

    This book chapter presents an approach to analysis of large-scale time-series sensor information based on our experience with power grid data. We use the R-Hadoop Integrated Programming Environment (RHIPE) to analyze a 2TB data set and present code and results for this analysis.

  15. FUTURE POWER GRID INITIATIVE A Statistical State Prediction

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE A Statistical State Prediction Methodology to Improve Reliability the system future states, the project will enable proactive operation to improve the operational reliability the uncertainty in the future brought in by load, variable generation, market behaviors. This study will result

  16. Optimal Energy Storage Control Policies for the Smart Power Grid

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    Optimal Energy Storage Control Policies for the Smart Power Grid Iordanis Koutsopoulos Vassiliki Center for Research and Technology Hellas (CERTH), Greece Abstract--Electric energy storage devices the optimal energy storage control problem from the side of the utility operator. The operator controller

  17. Statistical analysis of cascading failures in power grids

    SciTech Connect (OSTI)

    Chertkov, Michael; Pfitzner, Rene; Turitsyn, Konstantin

    2010-12-01

    We introduce a new microscopic model of cascading failures in transmission power grids. This model accounts for automatic response of the grid to load fluctuations that take place on the scale of minutes, when optimum power flow adjustments and load shedding controls are unavailable. We describe extreme events, caused by load fluctuations, which cause cascading failures of loads, generators and lines. Our model is quasi-static in the causal, discrete time and sequential resolution of individual failures. The model, in its simplest realization based on the Directed Current description of the power flow problem, is tested on three standard IEEE systems consisting of 30, 39 and 118 buses. Our statistical analysis suggests a straightforward classification of cascading and islanding phases in terms of the ratios between average number of removed loads, generators and links. The analysis also demonstrates sensitivity to variations in line capacities. Future research challenges in modeling and control of cascading outages over real-world power networks are discussed.

  18. Power Grid Optimization | GE Global Research

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w w w.pv - te ch.org Power

  19. An integrated security framework for GOSS power grid analytics platform

    SciTech Connect (OSTI)

    Gibson, Tara D.; Ciraci, Selim; Sharma, Poorva; Allwardt, Craig H.; Rice, Mark J.; Akyol, Bora A.

    2014-06-23

    In power grid operations, security is an essential component for any middleware platform. Security protects data against unwanted access as well as cyber attacks. GridOpticsTM Software System (GOSS) is an open source power grid analytics platform that facilitates ease of access between applications and data sources and promotes development of advanced analytical applications. GOSS contains an API that abstracts many of the difficulties in connecting to various heterogeneous data sources. A number of applications and data sources have already been implemented to demonstrate functionality and ease of use. A security framework has been implemented which leverages widely accepted, robust JavaTM security tools in a way such that they can be interchanged as needed. This framework supports the complex fine-grained, access control rules identified for the diverse data sources already in GOSS. Performance and reliability are also important considerations in any power grid architecture. An evaluation is done to determine the overhead cost caused by security within GOSS and ensure minimal impact to performance.

  20. Value of Faster Computation for Power Grid Operation

    SciTech Connect (OSTI)

    Chen, Yousu; Huang, Zhenyu; Elizondo, Marcelo A.

    2012-09-30

    As a result of the grid evolution meeting the information revolution, the power grid is becoming far more complex than it used to be. How to feed data in, perform analysis, and extract information in a real-time manner is a fundamental challenge in today’s power grid operation, not to mention the significantly increased complexity in the smart grid environment. Therefore, high performance computing (HPC) becomes one of the advanced technologies used to meet the requirement of real-time operation. This paper presents benefit case studies to show the value of fast computation for operation. Two fundamental operation functions, state estimation (SE) and contingency analysis (CA), are used as examples. In contrast with today’s tools, fast SE can estimate system status in a few seconds—comparable to measurement cycles. Fast CA can solve more contingencies in a shorter period, reducing the possibility of missing critical contingencies. The benefit case study results clearly show the value of faster computation for increasing the reliability and efficiency of power system operation.

  1. Update to Large Power Transformers and the U.S. Electric Grid...

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

    Update to Large Power Transformers and the U.S. Electric Grid Report Now Available Update to Large Power Transformers and the U.S. Electric Grid Report Now Available April 25, 2014...

  2. Large Power Transformers and the U.S. Electric Grid Report Update...

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

    Large Power Transformers and the U.S. Electric Grid Report Update (April 2014) Large Power Transformers and the U.S. Electric Grid Report Update (April 2014) The Office of...

  3. An engineering-economic analysis of combined heat and power technologies in a (mu)grid application

    E-Print Network [OSTI]

    Bailey, Owen; Ouaglal, Boubekeur; Bartholomew, Emily; Marnay, Chris; Bourassa, Norman

    2002-01-01

    the high-voltage meshed power grid with which current powerand providing the µGrid’s power and heat with DER plus CHPProviding the µGrid’s power and heat with CHP reduces the µ

  4. Lassoing Line Outages in the Smart Power Grid

    E-Print Network [OSTI]

    Zhu, Hao

    2011-01-01

    Fast and accurate unveiling of power line outages is of paramount importance not only for preventing faults that may lead to blackouts, but also for routine monitoring and control tasks of the smart grid, including state estimation and optimal power flow. Existing approaches are either challenged by the \\emph{combinatorial complexity} issues involved, and are thus limited to identifying single- and double-line outages; or, they invoke less pragmatic assumptions such as \\emph{conditionally independent} phasor angle measurements available across the grid. Using only a subset of voltage phasor angle data, the present paper develops a near real-time algorithm for identifying multiple line outages at the affordable complexity of solving a quadratic program via block coordinate descent iterations. The novel approach relies on reformulating the DC linear power flow model as a \\emph{sparse} overcomplete expansion, and leveraging contemporary advances in compressive sampling and variable selection using the least-abso...

  5. Phase Model with Feedback Control for Power Grids

    E-Print Network [OSTI]

    Matsuo, Tatsuma

    2013-01-01

    A phase model with feedback control is studied as a dynamical model of power grids. As an example, we study a model network corresponding to the power grid in the Kyushu region. The standard frequency is maintained by the mutual synchronization and the feedback control. Electric failures are induced by an overload. We propose a local feedback method in which the strength of feedback control is proportional to the magnitude of generators. We find that the electric failures do not occur until the utilization ratio is close to 1 under this feedback control. We also find that the temporal response for the time-varying input power is suppressed under this feedback control. We explain the mechanisms using the corresponding global feedback method.

  6. Abstract: During power deregulation, power companies are releasing their transmission grids to form ISOs/RTOs while

    E-Print Network [OSTI]

    1 Abstract: During power deregulation, power companies are releasing their transmission grids for these ISOs/RTOs is to further cooperate and to run the power market on even a bigger grid as a Mega for these ISOs/RTOs is to further combine and enlarge to become a bigger Mega-RTO grid for a better market

  7. AutoGrid - Turning Big Data Into Power with the Energy Data Platform and Apps

    SciTech Connect (OSTI)

    Narayan, Amit; Dresselhuys, Eric; Kulp, Yann; Buseman, Greg; Piette, Mary Ann; Tang, Andrew; Dailey, Karla; Knudsen, Chris

    2014-03-25

    AutoGrid personnel discuss how they are turning big data into power with the energy data platform and apps.

  8. NREL: Transmission Grid Integration - Active Power Controls

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines lightGeospatial ToolkitSMARTS -BeingFuture for SolarTechnologyNew

  9. Citizens Collaboration to Minimize Power Costs in Smart Grids: A Game Theoretic Approach

    E-Print Network [OSTI]

    Bellalta, Boris

    Citizens Collaboration to Minimize Power Costs in Smart Grids: A Game Theoretic Approach Tarek Al.bellalta@upf.edu Keywords: Smart Cities, Smart Grids, Renewable Energy, Game Theory. Abstract: Generating the power end-users in smart grids. We consider that citizens can produce some amount of electric power obtained

  10. Aalborg Universitet Generation-Side Power Scheduling in a Grid-Connected DC Microgrid

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Generation-Side Power Scheduling in a Grid-Connected DC Microgrid Hernández). Generation-Side Power Scheduling in a Grid-Connected DC Microgrid. In IEEE ICDCM 2015. IEEE. General rights.aau.dk on: juli 04, 2015 #12;Generation-Side Power Scheduling in a Grid-Connected DC Microgrid Adriana C

  11. SPACE WEATHER AND THE INCIDENCE OF REACTIVE "OFF-COST" OPERATIONS IN THE PJM POWER GRID

    E-Print Network [OSTI]

    Schrijver, Karel

    space weather impacts the electricity market in the PJM power grid. The starting point of this paperSPACE WEATHER AND THE INCIDENCE OF REACTIVE "OFF-COST" OPERATIONS IN THE PJM POWER GRID 7.6 Kevin F the price of electricity in the PJM power grid. In this paper we examine one of the mechanisms by which

  12. Risk analysis via heterogeneous models of SCADA interconnecting Power Grids and Telco Networks

    E-Print Network [OSTI]

    Tronci, Enrico

    Risk analysis via heterogeneous models of SCADA interconnecting Power Grids and Telco Networks A and Data Acquisition (SCADA) systems has led to an improvement of Power Grid operations and functionalities power grid services are increasingly depending upon the adequate functionality of SCADA system which

  13. Byzantine Fault Tolerance for Electric Power Grid Monitoring and Control Wenbing Zhao and F. Eugenio Villaseca

    E-Print Network [OSTI]

    Zhao, Wenbing

    Byzantine Fault Tolerance for Electric Power Grid Monitoring and Control Wenbing Zhao and F of the electric power grid is crucial to ev- ery nation's security and well-being. As revealed by a num- ber of large-scale blackout incidents in North America, the data communication infrastructure for power grid

  14. Electrical Characteristics of Multi-Layer Power Distribution Grids Andrey V. Mezhiba and Eby G. Friedman

    E-Print Network [OSTI]

    Friedman, Eby G.

    Electrical Characteristics of Multi-Layer Power Distribution Grids Andrey V. Mezhiba and Eby G a multi- layer power distribution grid typically has significantly different elec- trical properties distribution grids built exclusively in the up- per, low resistance metal layers, a multi-layer power

  15. On Modeling Random Topology Power Grids for Testing Decentralized Network Control Strategies

    E-Print Network [OSTI]

    Scaglione, Anna

    On Modeling Random Topology Power Grids for Testing Decentralized Network Control Strategies.edu) Abstract: An electrical power grid is a critical infrastructure. Its reliable, robust, and efficient statistically its information source, namely the power grid itself. In this paper we studied both

  16. Power Grid Analysis Using a Flexible Conjugate Gradient Algorithm with Sparsification

    E-Print Network [OSTI]

    Freund, Roland W.

    Power Grid Analysis Using a Flexible Conjugate Gradient Algorithm with Sparsification Peter power grid analysis. The algorithm allows changing preconditioners and sparsification of the search and sparsification. The algorithm is applied to a number of realistic power grid examples. I. INTRODUCTION The design

  17. CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges

    E-Print Network [OSTI]

    CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges for an Emerging;Electric Power Micro-grids: Barriers and opportunities for an emerging distributed energy architecture ii, such as engines and micro-turbines. #12;Electric Power Micro-grids: Barriers and opportunities for an emerging

  18. Power control of a wind farm with active stall wind turbines and AC grid connection

    E-Print Network [OSTI]

    Power control of a wind farm with active stall wind turbines and AC grid connection Anca D. Hansen1 on the wind farm level. The ability of active stall wind farms with AC grid connection to regulate the power, is therefore directed towards optimising the integration of large wind farms within the electrical power grid

  19. A Scaled Random Walk Solver for Fast Power Grid Analysis Baktash Boghrati, Sachin Sapatnekar

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    A Scaled Random Walk Solver for Fast Power Grid Analysis Baktash Boghrati, Sachin Sapatnekar-chip power grids requires the solution of large systems of linear algebraic equations with specific prop. These methods build a probabilistic network that corresponds to the power grid. However, this construction does

  20. Analysis and Reduction of Power Grid Models under Uncertainty Sandia National Laboratories

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    1.30pm Analysis and Reduction of Power Grid Models under Uncertainty Habib Najm Sandia National Laboratories Abstract The increased utilization of alternative energy sources requires that evolving power grid Uncertainty Eigenproblem Closure Analysis and Reduction of Power Grid Models under Uncertainty H.N. Najm

  1. A Worst-Case Circuit Delay Verification Technique Considering Power Grid Voltage Variations

    E-Print Network [OSTI]

    Najm, Farid N.

    A Worst-Case Circuit Delay Verification Technique Considering Power Grid Voltage Variations then these critical paths we tie the supplies of the gates to physical power grids and re-analyze for the worst- case and report on the implementation results using benchmark circuits tied to a number of test-case power grids

  2. OPTIMIZATION STRATEGIES FOR THE VULNERABILITY ANALYSIS OF THE ELECTRIC POWER GRID

    E-Print Network [OSTI]

    Pinar, Ali

    OPTIMIZATION STRATEGIES FOR THE VULNERABILITY ANALYSIS OF THE ELECTRIC POWER GRID ALI PINAR, JUAN would cause a severe blackout, is critical for the secure operation of the electric power grid. We show how power grid vulnerability analysis can be studied as a bilevel mixed integer nonlinear programming

  3. Scaling Analysis of On-Chip Power Grid Voltage Variations in Nanometer Scale ULSI

    E-Print Network [OSTI]

    Pedram, Massoud

    Scaling Analysis of On-Chip Power Grid Voltage Variations in Nanometer Scale ULSI AMIR H. AJAMI, 1 be insufficient to limit the voltage fluctuations over the power grid for future technologies. It is also shown voltage drop in the power grid may result in a functional failure in dynamic logic and a timing violation

  4. Power Grid Optimization in 3D Circuits Using MIM and CMOS Decoupling Capacitors

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    Power Grid Optimization in 3D Circuits Using MIM and CMOS Decoupling Capacitors Pingqiang Zhou severe in 3D. CMOS decoupling capacitors (decaps) have been used effectively for controlling power grid between MIM and CMOS decaps. Experimental results show that power grid noise can be more effectively

  5. Handling Inductance in Early Power Grid Verification Nahi H. Abdul Ghani

    E-Print Network [OSTI]

    Najm, Farid N.

    Handling Inductance in Early Power Grid Verification Nahi H. Abdul Ghani Department of ECE design verification, one should check if the voltage drop on the power grid exceeds some critical thresh, the currents drawn by the logic beneath the power grid are described by means of current constraints

  6. A geometric approach for early power grid verification using current constraints

    E-Print Network [OSTI]

    Najm, Farid N.

    A geometric approach for early power grid verification using current constraints Imad A. Ferzli Automation Eindhoven, The Netherlands lars@magma-da.com ABSTRACT The verification of power grids in modern programs as there are power grid nodes, to an- other involving a user-limited number of solutions of one

  7. A Fast Algorithm for Power Grid Design Jaskirat Singh Sachin S. Sapatnekar

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    A Fast Algorithm for Power Grid Design Jaskirat Singh Sachin S. Sapatnekar Department of Electrical is recursively bipartitioned, and the wire pitches and the wire widths of the power grid in the partitions of the power grid constructed in the previous levels of partitioning, the scheme ensures that a small global

  8. An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1

    E-Print Network [OSTI]

    Hu, Jiang

    An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1 and Kangsheng Chen and verification. Meanwhile, the huge size of power grid requires its analysis to be fast and highly scalable. Algebraic multigrid (AMG) has been recognized as a promising approach for fast power grid analysis. We

  9. A Partition-based Algorithm for Power Grid Design using Locality

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    1 A Partition-based Algorithm for Power Grid Design using Locality Jaskirat Singh Sachin S widths of the power grid in the partitions are repeatedly adjusted to meet the voltage drop and current density specifications. By using the macromodels of the power grid constructed in the previous levels

  10. An Efficient Dual Algorithm for Vectorless Power Grid Verification under Linear Current Constraints

    E-Print Network [OSTI]

    Wang, Jia

    An Efficient Dual Algorithm for Vectorless Power Grid Verification under Linear Current Constraints, Chicago, IL 60616, USA ABSTRACT Vectorless power grid verification makes it possible to eval- uate worst, the vectorless power grid verification problem can be formulated and solved as a linear programming (LP) problem

  11. A Novel Visualization Technique for Electric Power Grid Analytics

    SciTech Connect (OSTI)

    Wong, Pak C.; Schneider, Kevin P.; Mackey, Patrick S.; Foote, Harlan P.; Chin, George; Guttromson, Ross T.; Thomas, James J.

    2009-05-01

    The application of information visualization holds tremendous promise for the electric power industry, and yet its potential has not been sufficiently exploited by the visualization community. Prior work on visualizing electric power systems has been limited to depicting raw or processed information on top of a geographic layout. Little effort has been devoted to maximize the analytical strengths naturally gained by the visualization itself. This paper introduces a visualization system prototype, known as GreenGrid, that explores the planning and monitoring of the North American Electricity Infrastructure. For the purposes of visualization, the power infrastructure can be described as a network of nodes and links. The nodes represent the electrical buses where generators and loads are connected, while the links represent the transmission lines that interconnect the buses. This paper focuses mainly on a customized technique within GreenGrid that is designed to visually identify abnormal characteristics of the electricity infrastructure. In particular, we examine an extreme event that occurred within the Western United States power grid on August 10, 1996. We compare our study results with the conclusion of the post-disturbance analysis and find that many of the disturbance characteristics can be readily identified with the proper form of visualization. The paper includes a lessons learned discussion to evaluate the visualization application.

  12. Control and Optimization Meet the Smart Power Grid - Scheduling of Power Demands for Optimal Energy Management

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    2010-01-01

    The smart power grid aims at harnessing information and communication technologies to enhance reliability and enforce sensible use of energy. Its realization is geared by the fundamental goal of effective management of demand load. In this work, we envision a scenario with real-time communication between the operator and consumers. The grid operator controller receives requests for power demands from consumers, with different power requirement, duration, and a deadline by which it is to be completed. The objective is to devise a power demand task scheduling policy that minimizes the grid operational cost over a time horizon. The operational cost is a convex function of instantaneous power consumption and reflects the fact that each additional unit of power needed to serve demands is more expensive as demand load increases.First, we study the off-line demand scheduling problem, where parameters are fixed and known. Next, we devise a stochastic model for the case when demands are generated continually and sched...

  13. Grid-scale Fluctuations and Forecast Error in Wind Power

    E-Print Network [OSTI]

    G. Bel; C. P. Connaughton; M. Toots; M. M. Bandi

    2015-03-29

    The fluctuations in wind power entering an electrical grid (Irish grid) were analyzed and found to exhibit correlated fluctuations with a self-similar structure, a signature of large-scale correlations in atmospheric turbulence. The statistical structure of temporal correlations for fluctuations in generated and forecast time series was used to quantify two types of forecast error: a timescale error ($e_{\\tau}$) that quantifies the deviations between the high frequency components of the forecast and the generated time series, and a scaling error ($e_{\\zeta}$) that quantifies the degree to which the models fail to predict temporal correlations in the fluctuations of the generated power. With no $a$ $priori$ knowledge of the forecast models, we suggest a simple memory kernel that reduces both the timescale error ($e_{\\tau}$) and the scaling error ($e_{\\zeta}$).

  14. Grid-scale Fluctuations and Forecast Error in Wind Power

    E-Print Network [OSTI]

    Bel, G; Toots, M; Bandi, M M

    2015-01-01

    The fluctuations in wind power entering an electrical grid (Irish grid) were analyzed and found to exhibit correlated fluctuations with a self-similar structure, a signature of large-scale correlations in atmospheric turbulence. The statistical structure of temporal correlations for fluctuations in generated and forecast time series was used to quantify two types of forecast error: a timescale error ($e_{\\tau}$) that quantifies the deviations between the high frequency components of the forecast and the generated time series, and a scaling error ($e_{\\zeta}$) that quantifies the degree to which the models fail to predict temporal correlations in the fluctuations of the generated power. With no $a$ $priori$ knowledge of the forecast models, we suggest a simple memory kernel that reduces both the timescale error ($e_{\\tau}$) and the scaling error ($e_{\\zeta}$).

  15. Reactive power control of grid-connected wind farm based on adaptive dynamic programming

    E-Print Network [OSTI]

    He, Haibo

    Reactive power control of grid-connected wind farm based on adaptive dynamic programming Yufei Tang and integration with the grid. This controller can effectively dampen the oscillation of the wind farm system under grid fault. In general, there are mainly three kinds of wind power generators: squirrel

  16. Power Grid Network Evolutions for Local Energy Trading

    E-Print Network [OSTI]

    Pagani, Giuliano Andrea

    2012-01-01

    The shift towards a energy Grid dominated by prosumers (consumers and producers of energy) will inevitably have repercussions on the distribution infrastructure. Today it is a hierarchical one designed to deliver energy from large scale facilities to end-users. Tomorrow it will be a capillary infrastructure at the medium and Low Voltage levels that will support local energy trading among prosumers. In our previous work, we analyzed the Dutch Power Grid and made an initial analysis of the economic impact topological properties have on decentralized energy trading. In this paper, we go one step further and investigate how different networks topologies and growth models facilitate the emergence of a decentralized market. In particular, we show how the connectivity plays an important role in improving the properties of reliability and path-cost reduction. From the economic point of view, we estimate how the topological evolutions facilitate local electricity distribution, taking into account the main cost ingredi...

  17. A Stochastic Power Network Calculus for Integrating Renewable Energy Sources into the Power Grid

    SciTech Connect (OSTI)

    Wang, K; Ciucu, F; Lin, C; Low, SH

    2012-07-01

    Renewable energy such as solar and wind generation will constitute an important part of the future grid. As the availability of renewable sources may not match the load, energy storage is essential for grid stability. In this paper we investigate the feasibility of integrating solar photovoltaic (PV) panels and wind turbines into the grid by also accounting for energy storage. To deal with the fluctuation in both the power supply and demand, we extend and apply stochastic network calculus to analyze the power supply reliability with various renewable energy configurations. To illustrate the validity of the model, we conduct a case study for the integration of renewable energy sources into the power system of an island off the coast of Southern California. In particular, we asses the power supply reliability in terms of the average Fraction of Time that energy is Not-Served (FTNS).

  18. Power Converter Topologies with Energy Recovery and Grid Power Limitation For Inductive Load Applications

    E-Print Network [OSTI]

    Rossini, Stefano; Papastergiou, Konstantinos; Le Godec, Gilles; Retegui, Rogelio Garcia; Maestri, Sebastian

    2015-01-01

    This work investigates a grid interface for power supplies used in particle accelerators for cycling loads such as large electromagnets. Two topologies are discussed integrating magnetic energy recovery. For each topology, the associated energy management strategies are examined with the objective to control the grid current profile. A model is established for each of the proposed solutions and the simulation results are presented. A critical review of the investigated energy management solutions is attempted.

  19. 1. Multi-Agent Systems, Intelligent Robotics, Mechatronics, and General Control Areas. 2. Power Electronics, Renewable Energy, and Smart Grid.

    E-Print Network [OSTI]

    Wu, Yih-Min

    , and General Control Areas. 2. Power Electronics, Renewable Energy, and Smart Grid. 3. Computer Science

  20. Multi-Agent Systems and Control, Intelligent Robotics, and Cybernetics. Power Electronics, Renewable Energy, and Smart Grid.

    E-Print Network [OSTI]

    Wu, Yih-Min

    . Power Electronics, Renewable Energy, and Smart Grid. Computer Science and Engineering. Embedded Systems

  1. Anforderungen an den Energie-und Leistungsumsatz der POWER TO GAS-Einheit im MICRO GRID eines industriellen Produktionsstandortes

    E-Print Network [OSTI]

    Paderborn, Universität

    MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert

  2. PV AND GRID RELIABILITY: AVAILABILITY OF PV POWER DURING CAPACITY SHORTFALLS

    E-Print Network [OSTI]

    Perez, Richard R.

    PV AND GRID RELIABILITY: AVAILABILITY OF PV POWER DURING CAPACITY SHORTFALLS Richard Perez events caused by high, localized demand and inability for the grid operators to deliver local power at photovoltaic (PV) power availability during major summer 1999-2000 power outages in the United States. We

  3. Analysis of major failures in Europe's power grid

    E-Print Network [OSTI]

    Rosas-Casals, Martí

    2009-01-01

    Power grids are prone to failure. Time series of reliability measures such as total power loss or energy not supplied can give significant account of the underlying dynamical behavior of these systems, specially when the resulting probability distributions present remarkable features such as an algebraic tail, for example. In this paper, seven years (from 2002 to 2008) of Europe's transport of electricity network failure events have been analyzed and the best fit for this empirical data probability distribution is presented. With the actual span of available data and although there exists a moderate support for the power law model, the relatively small amount of events contained in the function's tail suggests that other causal factors might be significantly ruling the system's dynamics.

  4. Utility-Scale Power Router: Dynamic Control of Grid Assets Using Direct AC Converter Cells

    SciTech Connect (OSTI)

    2010-09-01

    ADEPT Project: Georgia Tech is developing a cost-effective, utility-scale power router that uses an enhanced transformer to more efficiently direct power on the grid. Existing power routing technologies are too expensive for widespread use, but the ability to route grid power to match real-time demand and power outages would significantly reduce energy costs for utilities, municipalities, and consumers. Georgia Tech is adding a power converter to an existing grid transformer to better control power flows at about 1/10th the cost of existing power routing solutions. Transformers convert the high-voltage electricity that is transmitted through the grid into the low-voltage electricity that is used by homes and businesses. The added converter uses fewer steps to convert some types of power and eliminates unnecessary power storage, among other improvements. The enhanced transformer is more efficient, and it would still work even if the converter fails, ensuring grid reliability.

  5. Cluster Explosive Synchronization in a Power Grid model

    E-Print Network [OSTI]

    Ji, Peng; Menck, Peter J; Rodrigues, Francisco A; Kurths, Jürgen

    2013-01-01

    The emergence of explosive synchronization has been reported as an abrupt transition in complex networks of first-order Kuramoto oscillators. In this Letter, we demonstrate that the nodes in a power grid model, equivalent to a second-order Kuramoto model, perform a cascade of transitions toward a synchronous macroscopic state, a novel phenomenon that we call cluster explosive synchronization. We provide a rigorous analytical treatment using a mean-field analysis in uncorrelated networks. Our findings are in good agreement with numerical simulations and fundamentally deepen the understanding of microscopic mechanisms toward synchronization.

  6. MATCASC: A tool to analyse cascading line outages in power grids

    E-Print Network [OSTI]

    Koç, Yakup; Araujo, Nuno A M; Warnier, Martijn

    2013-01-01

    Blackouts in power grids typically result from cascading failures. The key importance of the electric power grid to society encourages further research into sustaining power system reliability and developing new methods to manage the risks of cascading blackouts. Adequate software tools are required to better analyze, understand, and assess the consequences of the cascading failures. This paper presents MATCASC, an open source MATLAB based tool to analyse cascading failures in power grids. Cascading effects due to line overload outages are considered. The applicability of the MATCASC tool is demonstrated by assessing the robustness of IEEE test systems and real-world power grids with respect to cascading failures.

  7. A Multigridlike Technique for Power Grid Analysis Joseph N. Kozhaya, Sani R. Nassif, and Farid N. Najm

    E-Print Network [OSTI]

    Najm, Farid N.

    1 A Multigrid­like Technique for Power Grid Analysis Joseph N. Kozhaya, Sani R. Nassif, and Farid N. Najm Abstract--- Modern sub­micron VLSI designs include huge power grids that are required and memory complexity. We propose a novel multigrid­like technique for the analysis of power grids. The grid

  8. A Multigrid-like Technique for Power Grid Analysis Joseph N. Kozhaya, Sani R. Nassif, and Farid N. Najm

    E-Print Network [OSTI]

    Najm, Farid N.

    1 A Multigrid-like Technique for Power Grid Analysis Joseph N. Kozhaya, Sani R. Nassif, and Farid N. Najm Abstract-- Modern sub-micron VLSI designs include huge power grids that are required to distribute and memory complexity. We propose a novel multigrid-like technique for the analysis of power grids. The grid

  9. Distributed Internet-based Load Altering Attacks against Smart Power Grids

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    management, cost-efficient load protection. I. INTRODUCTION The recent advancements in smart grid systemsDistributed Internet-based Load Altering Attacks against Smart Power Grids Amir-Hamed Mohsenian distribution system. Keywords: Smart grid security, Internet-based load altering attacks, demand side

  10. The Lattice QCD community needs both computing power and data sharing: the APE behind the GRID

    E-Print Network [OSTI]

    Rossetti, Davide

    The Lattice QCD community needs both computing power and data sharing: the APE behind the GRID A The introduction of new computing paradigms, namely Grid and Cluster computing, is exerting unusual pressure on traditional supercomputing environments to reach a certain level of integration. Grids are thought to become

  11. POWER SPECTRAL PARAMETERIZATIONS OF ERROR AS A FUNCTION OF RESOLUTION IN GRIDDED

    E-Print Network [OSTI]

    Kaplan, Alexey

    POWER SPECTRAL PARAMETERIZATIONS OF ERROR AS A FUNCTION OF RESOLUTION IN GRIDDED ALTIMETRY MAPS be expressed in terms of the averages over model grid box areas. In reality, however, observations are either differently by the model grid and by the observational system. This difference turns out to be a major

  12. An Economy Driven Resource Management Architecture for Global Computational Power Grids

    E-Print Network [OSTI]

    Buyya, Rajkumar

    An Economy Driven Resource Management Architecture for Global Computational Power Grids Rajkumar and scheduling driven by computational economy in the emerging grid computing context. They also apply this limitation, we have proposed an infrastructure called GRid Architecture for Computational Economy (GRACE

  13. False Data Injection Attacks with Incomplete Information Against Smart Power Grids

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    False Data Injection Attacks with Incomplete Information Against Smart Power Grids Md. Ashfaqur introduced as an important class of cyber attacks against smart grid's wide area measurement and monitoring Injection Attack, Smart Grid Security, Incomplete Information, Transmission Line Admittance Uncer- tainty

  14. Intelligent sensor and controller framework for the power grid

    SciTech Connect (OSTI)

    Akyol, Bora A.; Haack, Jereme Nathan; Craig, Jr., Philip Allen; Tews, Cody William; Kulkarni, Anand V.; Carpenter, Brandon J.; Maiden, Wendy M.; Ciraci, Selim

    2015-07-28

    Disclosed below are representative embodiments of methods, apparatus, and systems for monitoring and using data in an electric power grid. For example, one disclosed embodiment comprises a sensor for measuring an electrical characteristic of a power line, electrical generator, or electrical device; a network interface; a processor; and one or more computer-readable storage media storing computer-executable instructions. In this embodiment, the computer-executable instructions include instructions for implementing an authorization and authentication module for validating a software agent received at the network interface; instructions for implementing one or more agent execution environments for executing agent code that is included with the software agent and that causes data from the sensor to be collected; and instructions for implementing an agent packaging and instantiation module for storing the collected data in a data container of the software agent and for transmitting the software agent, along with the stored data, to a next destination.

  15. Aalborg Universitet Control System interaction in the VSC-HVDC Grid Connected Offshore Wind Power

    E-Print Network [OSTI]

    Bak, Claus Leth

    Aalborg Universitet Control System interaction in the VSC-HVDC Grid Connected Offshore Wind Power-HVDC Grid Connected Offshore Wind Power Plant. In Proceedings of the Cigré Symposium 2015. CIGRE. General Offshore Wind Power Plant Jakob Glasdam1,2 , Lukasz Hubert Kocewiak1 , Jesper Hjerrild1 , Claus Leth Bak2 1

  16. Integration of Wave and Tidal Power into the Haida Gwaii Electrical Grid

    E-Print Network [OSTI]

    Victoria, University of

    Integration of Wave and Tidal Power into the Haida Gwaii Electrical Grid by Susan Margot Boronowski Committee Integration of Wave and Tidal Power into the Haida Gwaii Electrical Grid by Susan Margot only be practical at power penetration levels less than 20%. #12;iv Table of Contents Supervisory

  17. innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power

    E-Print Network [OSTI]

    innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power To fully harvest, examining the east and west sections of the U.S. power grid. The studies show that it is technically the nation's bountiful wind and solar resources, it is critical to know how much electrical power from

  18. Integrated Retail and Wholesale Power System Operation with Smart-Grid Functionality

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    of retail and wholesale power markets operating over transmission and distribution networks with smart is the integrated study of retail and wholesale power markets operating over transmis- sion and distribution grids1 Integrated Retail and Wholesale Power System Operation with Smart-Grid Functionality Dionysios

  19. Faculty Position in Smart-Grid Technologies and Power Systems Department of Electronics

    E-Print Network [OSTI]

    Faculty Position in Smart-Grid Technologies and Power Systems Department of Electronics Carleton-track) appointment in the area of smart grid technology and power systems at the rank of Assistant, Associate or Full with an electrical power background to complement our existing strengths and build the stream of "smart technologies

  20. A Probabilistic Model for the Dynamics of Cascading Failures and Blackouts in Power Grids

    E-Print Network [OSTI]

    Hayat, Majeed M.

    cause failures of power system components such as transmission lines and generators, which, in turn, may1 A Probabilistic Model for the Dynamics of Cascading Failures and Blackouts in Power Grids Mahshid Abstract--Current power grids suffer periodic disturbances that may trigger cascades of component failures

  1. Progress on Our 21st Century Grid: Powering Our Country and Our...

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

    and Our Economy June 3, 2013 - 11:43am Addthis Investments in the nation's electric power grid are delivering significant benefits to consumers and businesses. | Photo...

  2. A planning scheme for penetrating embedded generation in power distribution grids

    E-Print Network [OSTI]

    Wang, Jiankang, Ph. D. Massachusetts Institute of Technology

    2013-01-01

    Penetrating Embedded Generation, or Distributed Generation (DG), in power distribution grids presents great benefits and substantial positive social impacts to utilities, system operators and electricity consumers. Existing ...

  3. Florida Power and Light Comments on Smart Grid Request For Information...

    Office of Environmental Management (EM)

    Challenges. Florida Power and Light (FPL) believes the Smart Grid represents an important new technology platform for the electric utility industry and its customers. This...

  4. Distributed Real-Time Power Balancing in Renewable-Integrated Power Grids

    E-Print Network [OSTI]

    Liang, Ben

    , taking into account the uncertainty of the renewable generation, loads, and energy prices. We and more renewable energy sources such as wind and solar are expected to be integrated into the power grids balancing. Real-time control is mainly motivated by the unpredictability of renewable sources, which can

  5. Distributed Monitoring for Prevention of Cascading Failures in Operational Power Grids

    E-Print Network [OSTI]

    Warnier, Martijn; Koç, Yakup; Pauwels, Eric

    2015-01-01

    Electrical power grids are vulnerable to cascading failures that can lead to large blackouts. Detection and prevention of cascading failures in power grids is impor- tant. Currently, grid operators mainly monitor the state (loading level) of individual components in power grids. The complex architecture of power grids, with many interdependencies, makes it difficult to aggregate data provided by local compo- nents in a timely manner and meaningful way: monitoring the resilience with re- spect to cascading failures of an operational power grid is a challenge. This paper addresses this challenge. The main ideas behind the paper are that (i) a robustness metric based on both the topology and the operative state of the power grid can be used to quantify power grid robustness and (ii) a new proposed a distributed computation method with self-stabilizing properties can be used to achieving near real-time monitoring of the robustness of the power grid. Our con- tributions thus provide insight into the resilience wit...

  6. Correlated Failures of Power Systems: Analysis of the Nordic Grid

    E-Print Network [OSTI]

    Sastry, S. Shankar

    , as with the current developments of the SmartGrid [1]. Since many vital parts of today's society require reliable

  7. Modeling and Simulation of the EV Charging in a Residential Distribution Power Grid

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    by changing the transformers and adding more power plants to provide more energy to the residential grid [5Modeling and Simulation of the EV Charging in a Residential Distribution Power Grid Fereidoun of California, Irvine Irvine, California, USA {fahourai, ibhuang, mohammad.alfaruque} @ uci.edu Abstract

  8. HIGH-PERFORMANCE POWER GRIDS FOR NANOMETER TECHNOLOGIES Sachin S. Sapatnekar

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    empirically observed that the mean time to failure for a wire can be controlled by limiting its current is the on-chip power grid, and therefore, controlling power grid noise is of paramount importance for current and future de- signs. Moreover, variations in the voltage level of the supply and ground networks

  9. Aalborg Universitet Economic Power Dispatch of Distributed Generators in a Grid-Connected Microgrid

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Economic Power Dispatch of Distributed Generators in a Grid-Connected Microgrid., & Vasquez, J. C. (2015). Economic Power Dispatch of Distributed Generators in a Grid-Connected Microgrid-Connected Microgrid Adriana C. Luna, Nelson L. Diaz, Fabio Andrade, Mois`es Graells§, Josep M. Guerrero, and Juan C

  10. Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System

    E-Print Network [OSTI]

    1 Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System Mary in the context of the power grid and its interaction with buildings. We describe significant issues in energy-efficient, and the building operator was unable to "store energy" before an event occurs or must alter demand only after

  11. Design Framework of Compute Power Market for Peer-to-Peer and Grid Environments

    E-Print Network [OSTI]

    Melbourne, University of

    ) is a market-based resource management on Internet-wide computational resources. It transforms computers Market was first proposed in [7]. Compute Power Market transforms the grid computing environmentDesign Framework of Compute Power Market for Peer-to-Peer and Grid Environments Gian Chand Sodhy

  12. A Resilient Real-Time Agent-Based System for a Reconfigurable Power Grid

    E-Print Network [OSTI]

    Tolbert, Leon M.

    blackout of August 14, 2003 was a wakeup call for both the industry and academia to re-think techniques]. The vulnerability of the power grid during the August 14 blackout calls for a re-design of the power grid at both

  13. The Impact of Distributed Generation on Power Transmission Grid Dynamics D. E. Newman B. A. Carreras M. Kirchner I. Dobson

    E-Print Network [OSTI]

    Dobson, Ian

    The Impact of Distributed Generation on Power Transmission Grid Dynamics D. E. Newman B. A on the robustness of the power transmission grid using a dynamic model of the power transmission system (OPA of the transmission grid. This intuitive improvement comes simply from the realization that less power would need

  14. The Space Power Grid: Synergy Between Space, Energy and Security Policies

    E-Print Network [OSTI]

    collectors in a scalable path to space solar power. European initiatives for a DC grid to integrate space) that steady power is generated round the clock because the Sun is not obscured, and (2) as the scale increases

  15. A Hybrid Multi-Agent Framework for Load Management in Power Grid

    E-Print Network [OSTI]

    Zhang, Minjie

    A Hybrid Multi-Agent Framework for Load Management in Power Grid Systems Minjie Zhang, Dayong Ye, Quan Bai, Danny Sutanto, and Kashem Muttaqi Abstract. In order to cope with load management in power

  16. Smoothing effect for spatially distributed renewable resources and its impact on power grid robustness

    E-Print Network [OSTI]

    Nagata, Motoki; Fujiwara, Naoya; Tanaka, Gouhei; Suzuki, Hideyuki; Aihara, Kazuyuki

    2015-01-01

    In this paper, we show that spatial correlation of renewable energy outputs greatly influences the robustness of power grids. First, we propose a new index for the spatial correlation among renewable energy outputs. We find that the spatial correlation of renewable energy outputs in a short time-scale is as weak as that caused by independent random variables and that in a long time-scale is as strong as that under perfect synchronization. Then, by employing the topology of the power grid in eastern Japan, we analyze the robustness of the power grid with spatial correlation of renewable energy outputs. The analysis is performed by using a realistic differential-algebraic equations model and the result shows that the spatial correlation of the energy resources strongly degrades the robustness of the power grid. Our result suggests that the spatial correlation of the renewable energy outputs should be taken into account when estimating the stability of power grids.

  17. Large-deviation properties of resilience of power grids

    E-Print Network [OSTI]

    Dewenter, Timo

    2014-01-01

    We study the distributions of the resilience of power flow models against transmission line failures via a so-called backup capacity. We consider three ensembles of random networks and in addition, the topology of the British transmission power grid. The three ensembles are Erd\\H{o}s-R\\'enyi random graphs, Erd\\H{o}s-R\\'enyi random graphs with a fixed number of links, and spatial networks where the nodes are embedded in a two dimensional plane. We investigate numerically the probability density functions (pdfs) down to the tails to gain insight in very resilient and very vulnerable networks. This is achieved via large-deviation techniques which allow us to study very rare values which occur with probability densities below $10^{-160}$. We find that the right tail of the pdfs towards larger backup capacities follows an exponential with a strong curvature. This is confirmed by the rate function which approaches a limiting curve for increasing network sizes. Very resilient networks are basically characterized by ...

  18. Analysis of a power grid using the Kuramoto-like model

    E-Print Network [OSTI]

    Filatrella, Giovanni; Pedersen, Niels Falsig

    2008-01-01

    We show that there is a link between the Kuramoto paradigm and another system of synchronized oscillators, namely an electrical power distribution grid of generators and consumers. The purpose of this work is to show both the formal analogy and some practical consequences. The mapping can be made quantitative, and under some necessary approximations a class of Kuramoto-like models, those with bimodal distribution of the frequencies, is most appropriate for the power-grid. In fact in the power-grid there are two kinds of oscillators: the 'sources' delivering power to the 'consumers'.

  19. Analysis of a power grid using the Kuramoto-like model

    E-Print Network [OSTI]

    Giovanni Filatrella; Arne Hejde Nielsen; Niels Falsig Pedersen

    2008-02-16

    We show that there is a link between the Kuramoto paradigm and another system of synchronized oscillators, namely an electrical power distribution grid of generators and consumers. The purpose of this work is to show both the formal analogy and some practical consequences. The mapping can be made quantitative, and under some necessary approximations a class of Kuramoto-like models, those with bimodal distribution of the frequencies, is most appropriate for the power-grid. In fact in the power-grid there are two kinds of oscillators: the 'sources' delivering power to the 'consumers'.

  20. Pilot evaluation of electricity-reliability and power-quality monitoring in California's Silicon Valley with the I-Grid(R) system

    E-Print Network [OSTI]

    Eto, Joseph; Divan, Deepak; Brumsickle, William

    2004-01-01

    affect the regional power grid. January 23, 2003, AirplaneParadigm in Distribution Grid Power Quality And Reliability5 3. Description of the I-Grid Power-Quality and Reliability

  1. AVTA: Vehicle to Grid Power Flow Regulations and Building Codes...

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

    Merit Review 2014: PEV Integration with Renewables Vehicle Technologies Office Merit Review 2015: Electric Vehicle Grid Integration ANSI Electric Vehicle Standards Roadmap v2.0...

  2. Towards Effective Clustering Techniques for the Analysis of Electric Power Grids

    SciTech Connect (OSTI)

    Hogan, Emilie A.; Cotilla Sanchez, Jose E.; Halappanavar, Mahantesh; Wang, Shaobu; Mackey, Patrick S.; Hines, Paul; Huang, Zhenyu

    2013-11-30

    Clustering is an important data analysis technique with numerous applications in the analysis of electric power grids. Standard clustering techniques are oblivious to the rich structural and dynamic information available for power grids. Therefore, by exploiting the inherent topological and electrical structure in the power grid data, we propose new methods for clustering with applications to model reduction, locational marginal pricing, phasor measurement unit (PMU or synchrophasor) placement, and power system protection. We focus our attention on model reduction for analysis based on time-series information from synchrophasor measurement devices, and spectral techniques for clustering. By comparing different clustering techniques on two instances of realistic power grids we show that the solutions are related and therefore one could leverage that relationship for a computational advantage. Thus, by contrasting different clustering techniques we make a case for exploiting structure inherent in the data with implications for several domains including power systems.

  3. Incremental Analysis of Power Grids using Backward Random Walks Baktash Boghrati and Sachin S. Sapatnekar, University of Minnesota, Minneapolis, MN

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    intensive task. In this work, we first introduce an accurate modeling methodology for power grids thatA Incremental Analysis of Power Grids using Backward Random Walks Baktash Boghrati and Sachin S. Sapatnekar, University of Minnesota, Minneapolis, MN Power grid design and analysis is a critical part

  4. Preprint for Space Weather Journal (2014) Assessing the impact of space weather on the electric power grid

    E-Print Network [OSTI]

    Schrijver, Karel

    2014-01-01

    power grid based on insurance claims for industrial electrical equipment C. J. Schrijver1 , R. Dobbins2 disturbances in the electric power grid. Here, we perform a statistical analysis of 11,242 insurance claims on geomagnetic activity mirrors that of major disturbances in the U.S. high-voltage elec- tric power grid

  5. Discrete Event Simulation of QoS of a SCADA System Interconnecting a Power Grid and a Telco Network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Discrete Event Simulation of QoS of a SCADA System Interconnecting a Power Grid and a Telco Network, Telco network and Power grid act as a whole heterogeneous network. While SCADA system and Telco network can be well represented by means of discrete event simulators. To represent a Power grid a continuous

  6. Dartmouth College Computer Science Technical Report TR2010-668 Creating Large Disturbances in the Power Grid

    E-Print Network [OSTI]

    in the Power Grid: Methods of Attack After Cyber Infiltration Senior Honors Thesis June 2010 Loren Sands are pursuing methods of securing the cyber aspect of the U.S. power grid, one of the country's most critical attacks. In this paper I discuss the physical and cyber systems that compose the power grid, and I explore

  7. A Formal Model for Verifying the Impact of Stealthy Attacks on Optimal Power Flow in Power Grids

    E-Print Network [OSTI]

    Wang, Yongge

    - mal Power Flow; Formal Model 1. INTRODUCTION Power system control centers employ a numberA Formal Model for Verifying the Impact of Stealthy Attacks on Optimal Power Flow in Power Grids the integrity of OPF and undermine the economic and secure system operation. We present a formal verification

  8. Power Smoothing Control in a Grid-Connected Marine Current Turbine System for Compensating

    E-Print Network [OSTI]

    Boyer, Edmond

    Power Smoothing Control in a Grid-Connected Marine Current Turbine System for Compensating Swell speed may lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During disturbances. Index Terms--Marine current turbine, power fluctuation, swell effect, power smoothing control

  9. Multicore Architecture for Control and Emulation of Power Electronics and Smart Grid Systems

    E-Print Network [OSTI]

    Sanders, Seth

    Multicore Architecture for Control and Emulation of Power Electronics and Smart Grid Systems Michel of Technology Power Electronics Power electronics is broadly defined as a solid-state energy conversion of power electronic circuits are: electronic (solid-state) switches and energy storage elements on one side

  10. IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 2, JUNE 2013 1087 Reliability Modeling and Evaluation of Power

    E-Print Network [OSTI]

    Fu, Yong

    IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 2, JUNE 2013 1087 Reliability Modeling and Evaluation, and Mirrasoul J. Mousavi, Senior Member, IEEE Abstract--Smart grid technologies leveraging advancements of smart grid monitoring and proposes a mathemat- ical model to assess its impact on power grid reliability

  11. Transdisciplinary electric power grid science Charles D. Brummitta,b,1

    E-Print Network [OSTI]

    D'Souza, Raissa

    OPINION Transdisciplinary electric power grid science Charles D. Brummitta,b,1 , Paul D. H. Hinesc-long feedbacks surrounding electrical infrastructure (includ- ing weather, policy, public sentiment, mar- kets storm damage or build distributed generation?). The "smart grid," which monitors and controls electrical

  12. A Novel Application of Parallel Betweenness Centrality to Power Grid Contingency Analysis

    SciTech Connect (OSTI)

    Jin, Shuangshuang; Huang, Zhenyu; Chen, Yousu; Chavarría-Miranda, Daniel; Feo, John T.; Wong, Pak C.

    2010-04-19

    In Energy Management Systems, contingency analysis is commonly performed for identifying and mitigating potentially harmful power grid component failures. The exponentially increasing combinatorial number of failure modes imposes a significant computational burden for massive contingency analysis. It is critical to select a limited set of high-impact contingency cases within the constraint of computing power and time requirements to make it possible for real-time power system vulnerability assessment. In this paper, we present a novel application of parallel betweenness centrality to power grid contingency selection. We cross-validate the proposed method using the model and data of the western US power grid, and implement it on a Cray XMT system - a massively multithreaded architecture - leveraging its advantages for parallel execution of irregular algorithms, such as graph analysis. We achieve a speedup of 55 times (on 64 processors) compared against the single-processor version of the same code running on the Cray XMT. We also compare an OpenMP-based version of the same code running on an HP Superdome shared-memory machine. The performance of the Cray XMT code shows better scalability and resource utilization, and shorter execution time for large-scale power grids. This proposed approach has been evaluated in PNNL’s Electricity Infrastructure Operations Center (EIOC). It is expected to provide a quick and efficient solution to massive contingency selection problems to help power grid operators to identify and mitigate potential widespread cascading power grid failures in real time.

  13. Dynamic pricing and stabilization of supply and demand in modern electric power grids

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a mechanism for real-time pricing of electricity in smart power grids, with price stability as the primary concern. In previous publications the authors argued that relaying the real-time wholesale market ...

  14. Smart (In-home) Power Scheduling for Demand Response on the Smart Grid

    E-Print Network [OSTI]

    Yener, Aylin

    1 Smart (In-home) Power Scheduling for Demand Response on the Smart Grid Gang Xiong, Chen Chen consumption are part of demand response, which relies on varying price of electricity to reduce peak demand

  15. An Online Procurement Auction for Power Demand Response in Storage-Assisted Smart Grids

    E-Print Network [OSTI]

    Li, Zongpeng

    An Online Procurement Auction for Power Demand Response in Storage-Assisted Smart Grids Ruiting discharging at times when supply is tight. This work aims at a systematic study of such demand response

  16. Robustness of interdependent networks: The case of communication networks and the power grid

    E-Print Network [OSTI]

    Parandehgheibi, Marzieh

    We study the robustness of interdependent networks, in which the state of one network depends on the state of the other network and vice versa. In particular, we focus on the interdependency between the power grid and ...

  17. Large Power Transformers and the U.S. Electric Grid Report Update...

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

    The Office of Electricity Delivery and Energy Reliability has released an update to its 2012 Large Power Transformers and the U.S. Electric Grid report. The new report includes...

  18. QUALIFIED FORECAST OF ENSEMBLE POWER PRODUCTION BY SPATIALLY DISPERSED GRID-CONNECTED PV SYSTEMS

    E-Print Network [OSTI]

    Heinemann, Detlev

    , Energy Meteorology Group, D-26111 Oldenburg, Germany, elke.lorenz@uni-oldenburg.de + UniversityQUALIFIED FORECAST OF ENSEMBLE POWER PRODUCTION BY SPATIALLY DISPERSED GRID- CONNECTED PV SYSTEMS Schneider° * University of Oldenburg, Institute of Physics, Energy and Semiconductor Research Laboratory

  19. 248 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 20, NO. 1, JANUARY 2005 Micro-Grid Autonomous Operation During

    E-Print Network [OSTI]

    Lehn, Peter W.

    248 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 20, NO. 1, JANUARY 2005 Micro-Grid Autonomous--Distributed generation, distributed resources, electromagnetic transients, islanding, micro-grid, power sharing, voltage events and (ii) fault events that lead to islanding of a distribution subsystem and formation of a micro-grid

  20. Managing Wind Power Forecast Uncertainty in Electric Grids Submitted in partial fulfillment of the requirements for

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Managing Wind Power Forecast Uncertainty in Electric Grids Submitted in partial fulfillment;iii Abstract Electricity generated from wind power is both variable and uncertain. Wind forecasts prices. Wind power forecast errors for aggregated wind farms are often modeled with Gaussian

  1. Near-Millimeter Wave Issues for a Space Power Grid Narayanan Komerath, Vigneshwar Venkat, Jason Fernandez

    E-Print Network [OSTI]

    for the power generated when the sun is brightest or the wind is strongest. Real-time beaming also allows collectors and converters to generate beamed microwaves from concentrated solar power, feeding into the established space power grid at lower costs. In Phase 3, large areas of ultra light collectors in high orbits

  2. MARTHA: Architecture for Control and Emulation of Power Electronics and Smart Grid Systems

    E-Print Network [OSTI]

    Devadas, Srinivas

    an efficient interface between variable speed wind turbines and the grid that enables maximum wind power consumption by more than 30% [2]. B. Electronic Design Automation (EDA) of Power Electronics The level of automation in the design, prototyping, verifi- cation and testing of power electronics systems is, in many

  3. Integrated Retail and Wholesale (IRW) Power System Operations with Smart-Grid Functionality

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Integrated Retail and Wholesale (IRW) Power System Operations with Smart-Grid Functionality Leigh-NE, MISO, XM, RTE, MEC IRW Project: Integrated Retail/Wholesale Power System Operation with Smart on business practices manuals for restructured North American electric power markets Realistically rendered

  4. Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles

    E-Print Network [OSTI]

    Firestone, Jeremy

    i Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles as Resources for Distributed more robust. This report analyzes V2G power from three types of EDVs--battery, hybrid, and fuel cell and prices are high. Fuel cell and hybrid EDVs are sources of new power generation. For economic reasons

  5. Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles

    E-Print Network [OSTI]

    Firestone, Jeremy

    Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles as Resources for Distributed, and fuel cell. Battery EDVs can store electricity, charging during low demand times and discharging when power is scarce and prices are high. Fuel cell and hybrid EDVs are sources of new power generation

  6. Quantifiably secure power grid operation, management, and evolution : a study of uncertainties affecting the grid integration of renewables.

    SciTech Connect (OSTI)

    Gray, Genetha Anne; Watson, Jean-Paul; Silva Monroy, Cesar Augusto; Gramacy, Robert B.

    2013-09-01

    This report summarizes findings and results of the Quantifiably Secure Power Grid Operation, Management, and Evolution LDRD. The focus of the LDRD was to develop decisionsupport technologies to enable rational and quantifiable risk management for two key grid operational timescales: scheduling (day-ahead) and planning (month-to-year-ahead). Risk or resiliency metrics are foundational in this effort. The 2003 Northeast Blackout investigative report stressed the criticality of enforceable metrics for system resiliency - the grid's ability to satisfy demands subject to perturbation. However, we neither have well-defined risk metrics for addressing the pervasive uncertainties in a renewable energy era, nor decision-support tools for their enforcement, which severely impacts efforts to rationally improve grid security. For day-ahead unit commitment, decision-support tools must account for topological security constraints, loss-of-load (economic) costs, and supply and demand variability - especially given high renewables penetration. For long-term planning, transmission and generation expansion must ensure realized demand is satisfied for various projected technological, climate, and growth scenarios. The decision-support tools investigated in this project paid particular attention to tailoriented risk metrics for explicitly addressing high-consequence events. Historically, decisionsupport tools for the grid consider expected cost minimization, largely ignoring risk and instead penalizing loss-of-load through artificial parameters. The technical focus of this work was the development of scalable solvers for enforcing risk metrics. Advanced stochastic programming solvers were developed to address generation and transmission expansion and unit commitment, minimizing cost subject to pre-specified risk thresholds. Particular attention was paid to renewables where security critically depends on production and demand prediction accuracy. To address this concern, powerful filtering techniques for spatio-temporal measurement assimilation were used to develop short-term predictive stochastic models. To achieve uncertaintytolerant solutions, very large numbers of scenarios must be simultaneously considered. One focus of this work was investigating ways of reasonably reducing this number.

  7. Need-based Communication for Smart Grid: When to Inquire Power Price?

    E-Print Network [OSTI]

    Li, Husheng

    2010-01-01

    In smart grid, a home appliance can adjust its power consumption level according to the realtime power price obtained from communication channels. Most studies on smart grid do not consider the cost of communications which cannot be ignored in many situations. Therefore, the total cost in smart grid should be jointly optimized with the communication cost. In this paper, a probabilistic mechanism of locational margin price (LMP) is applied and a model for the stochastic evolution of the underlying load which determines the power price is proposed. Based on this framework of power price, the problem of determining when to inquire the power price is formulated as a Markov decision process and the corresponding elements, namely the action space, system state and reward function, are defined. Dynamic programming is then applied to obtain the optimal strategy. A simpler myopic approach is proposed by comparing the cost of communications and the penalty incurred by using the old value of power price. Numerical resul...

  8. Future Intelligent Power Grids: Analysis of the vision in the European Union and the United States

    SciTech Connect (OSTI)

    Coll-Mayor, Debora; Paget, Mia L.; Lightner, Eric M.

    2007-04-01

    The future of power grids is expected to involve an increasing level of intelligence and integration of new information and communication technologies in every aspect of the electricity system, from demand-side devices to wide-scale distributed generation to a variety of energy markets. This paper provides a general outlook of the definition of this future in the U.S. and the European Union and compares two approaches—GridWiseTM and SmartGrid. It describes the contexts in both the worlds, as they influence the two visions of the future intelligent power grid, and as they form foundations at each respective federal level for supporting research in this field. The similarities and complementarities of the two research programs are examined. Within the framework of a solid precedence for trans-Atlantic cooperation in energy research, the time would seem optimal to set in motion active collaboration and educational exchange on GridWise and SmartGrid research. This paper will help energy policy makers to better understand the key issues determining the two different approaches and the two different policies derived from them; as well as a comparison of the solution provided in each case. This work will also be useful for researchers and industry decision makers to be aware of trans-Atlantic approaches, opportunities, and resources looking toward future, more intelligent and interconnected power grids.

  9. A Data Analytics Framework for Smart Grids: Spatio-temporal Wind Power Analysis and Synchrophasor Data Mining

    E-Print Network [OSTI]

    Zhang, Junshan

    A Data Analytics Framework for Smart Grids: Spatio-temporal Wind Power Analysis and Synchrophasor-temporal wind power analysis for wind generation forecast and integration, and II) data mining and information fusion of synchrophasor measurements toward secure power grids. Part I is centered around wind power

  10. NREL + SolarCity: Maximizing Solar Power on Electrical Grids

    SciTech Connect (OSTI)

    Hannegan, Bryan; Hanley, Ryan; Symko-Davies, Martha

    2015-06-03

    Learn how NREL is partnering with SolarCity to study how to better integrate rooftop solar onto the grid. The work includes collaboration with the Hawaiian Electric Companies (HECO) to analyze high-penetration solar scenarios using advanced modeling and inverter testing at the Energy Systems Integration Facility (ESIF) on NREL’s campus. Results to date have been so promising that HECO has more than doubled the amount of rooftop solar it allows on its grid, showing utilities across the country that distributed solar is not a liability for reliability—and can even be an asset.

  11. Power Grid Verification Using Node and Branch Nahi Abdul Ghani

    E-Print Network [OSTI]

    Najm, Farid N.

    conservative and tight LP. Results show a dramatic reduction in the number of LPs thus making vectorless grid-case voltage drops which, in turn, entails the solution of as many linear programs (LPs) as there are nodes among node voltage drops and among branch currents. This allows us to replace a group of LPs by one

  12. Grid Interconnection and Performance Testing Procedures for Vehicle-To-Grid (V2G) Power Electronics: Preprint

    SciTech Connect (OSTI)

    Kramer, W.; Chakraborty, S.; Kroposki, B.; Hoke, A.; Martin, G.; Markel, T.

    2012-03-01

    Bidirectional power electronics can add vehicle-to-grid (V2G) capability in a plug-in vehicle, which then allows the vehicle to operate as a distributed resource (DR). The uniqueness of the battery-based V2G power electronics requires a test procedure that will not only maintain IEEE interconnection standards, but can also evaluate the electrical performance of the vehicle working as a DR. The objective of this paper is to discuss a recently published NREL technical report that provides interim test procedures for V2G vehicles for their integration into the electrical distribution systems and for their performance in terms of continuous output power, efficiency, and losses. Additionally, some other test procedures are discussed that are applicable to a V2G vehicle that desires to provide power reserve functions. A few sample test results are provided based on testing of prototype V2G vehicles at NREL.

  13. Co-Simulation of Detailed Whole Building with the Power System to Study Smart Grid Applications

    SciTech Connect (OSTI)

    Makhmalbaf, Atefe; Fuller, Jason C.; Srivastava, Viraj; Ciraci, Selim; Daily, Jeffrey A.

    2014-12-24

    Modernization of the power system in a way that ensures a sustainable energy system is arguably one of the most pressing concerns of our time. Buildings are important components in the power system. First, they are the main consumers of electricity and secondly, they do not have constant energy demand. Conventionally, electricity has been difficult to store and should be consumed as it is generated. Therefore, maintaining the demand and supply is critical in the power system. However, to reduce the complexity of power models, buildings (i.e., end-use loads) are traditionally modeled and represented as aggregated “dumb” nodes in the power system. This means we lack effective detailed whole building energy models that can support requirements and emerging technologies of the smart power grid. To gain greater insight into the relationship between building energy demand and power system performance, it is important to constitute a co-simulation framework to support detailed building energy modeling and simulation within the power system to study capabilities promised by the modern power grid. This paper discusses ongoing work at Pacific Northwest National Laboratory and presents underlying tools and framework needed to enable co-simulation of building, building energy systems and their control in the power system to study applications such as demand response, grid-based HVAC control, and deployment of buildings for ancillary services. The optimal goal is to develop an integrated modeling and simulation platform that is flexible, reusable, and scalable. Results of this work will contribute to future building and power system studies, especially those related to the integrated ‘smart grid’. Results are also expected to advance power resiliency and local (micro) scale grid studies where several building and renewable energy systems transact energy directly. This paper also reviews some applications that can be supported and studied using the framework introduced to understand their implications before they can be successfully implemented in the power system.

  14. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. X, NO. Y, MONTH 2012 1 Volatility of Power Grids under Real-Time Pricing

    E-Print Network [OSTI]

    Bhatia, Sangeeta

    IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. X, NO. Y, MONTH 2012 1 Volatility of Power Grids under for engineering modern power grids with the capacity to integrate renewable energy resources at large scale of the dynamics of supply, demand, and clearing prices in power systems with real-time retail pricing

  15. NREL Confirms Large Potential for Grid Integration of Wind, Solar Power (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01

    To fully harvest the nation's bountiful wind and solar resources, it is critical to know how much electrical power from these renewable resources could be integrated reliably into the grid. To inform the discussion about the potential of such variable sources, the National Renewable Energy Laboratory (NREL) launched two key regional studies, examining the east and west sections of the U.S. power grid. The studies show that it is technically possible for U.S. power systems to integrate 20%-35% renewable electricity if infrastructure and operational improvements can be made.

  16. Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time

    E-Print Network [OSTI]

    Firestone, Jeremy

    Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time Cory Budischak a,b,*, DeAnna Sewell c , Heather Thomson c , Leon Mach d, Newark, DE 19713, USA c Center for Carbon-Free Power Integration, School of Marine Science and Policy

  17. 1464 IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 3, SEPTEMBER 2013 Distributed Optimal Power Flow

    E-Print Network [OSTI]

    Giannakis, Georgios

    --Distributed optimization, distribution feeders, microgrids, optimal power flow, semidefinite relaxation. I. INTRODUCTION MICROGRIDS are portions of a power distribution net- work located downstream of the distribution substation) and energy storage devices [1]. A microgrid can operate in either grid-connected, islanded, or hybrid modes

  18. Distributing Power to Electric Vehicles on a Smart Grid Yingjie Zhou*,

    E-Print Network [OSTI]

    Maxemchuk, Nicholas F.

    Distributing Power to Electric Vehicles on a Smart Grid Yingjie Zhou*, , Student Member, IEEE.edu Abstract--Electric vehicles create a demand for additional electrical power. As the popularity of electric. However, in the interim the rate at which electric vehicles can be deployed will depend on our ability

  19. AN INNOVATIVE RTP-BASED RESIDENTIAL POWER SCHEDULING SCHEME FOR SMART GRIDS

    E-Print Network [OSTI]

    Snyder, Larry

    as demand response for residential power usage. In this scheme, the Energy Management Controller (EMCAN INNOVATIVE RTP-BASED RESIDENTIAL POWER SCHEDULING SCHEME FOR SMART GRIDS Chen Chen , Shalinee for consumers, but also reduce peak load and the variance between demand and supply, while avoiding the "rebound

  20. Synchronization Algorithms for Co-Simulation of Power Grid and Communication Networks

    SciTech Connect (OSTI)

    Ciraci, Selim; Daily, Jeffrey A.; Agarwal, Khushbu; Fuller, Jason C.; Marinovici, Laurentiu D.; Fisher, Andrew R.

    2014-09-11

    The ongoing modernization of power grids consists of integrating them with communication networks in order to achieve robust and resilient control of grid operations. To understand the operation of the new smart grid, one approach is to use simulation software. Unfortunately, current power grid simulators at best utilize inadequate approximations to simulate communication networks, if at all. Cooperative simulation of specialized power grid and communication network simulators promises to more accurately reproduce the interactions of real smart grid deployments. However, co-simulation is a challenging problem. A co-simulation must manage the exchange of informa- tion, including the synchronization of simulator clocks, between all simulators while maintaining adequate computational perfor- mance. This paper describes two new conservative algorithms for reducing the overhead of time synchronization, namely Active Set Conservative and Reactive Conservative. We provide a detailed analysis of their performance characteristics with respect to the current state of the art including both conservative and optimistic synchronization algorithms. In addition, we provide guidelines for selecting the appropriate synchronization algorithm based on the requirements of the co-simulation. The newly proposed algorithms are shown to achieve as much as 14% and 63% im- provement, respectively, over the existing conservative algorithm.

  1. Grid Impacts of Wind Power Variability: Recent Assessments from a Variety of Utilities in the United States (Presentation)

    SciTech Connect (OSTI)

    Parsons, B.

    2006-03-01

    Presentation for the European Wind Energy Conference held February 27--March 2, 2006, in Athens, Greece, showing grid impacts of wind power variability.

  2. ,"Year",,"Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA -Annual",2014Proved Reserves,Summary"Shale Proved Reserves (Billion4b. Summer

  3. ,"Year",,"Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA -Annual",2014Proved Reserves,Summary"Shale Proved Reserves (Billion4b. Summer4a.

  4. Control of a wind park with doubly fed induction generators in support of power system stability in case of grid faults

    E-Print Network [OSTI]

    and the transmission grid in the power system simulation software DIgSILENT Power Factory. The results demonstrate penetration of wind power the power system operators are revising nowa- days the grid codes in several turbines to support directly the power system in case of grid faults. The attention is thus on both

  5. Coupling Electric Vehicles and Power Grid through Charging-In-Motion and Connected Vehicle Technology

    SciTech Connect (OSTI)

    Li, Jan-Mou; Jones, Perry T; Onar, Omer C; Starke, Michael R

    2014-01-01

    A traffic-assignment-based framework is proposed to model the coupling of transportation network and power grid for analyzing impacts of energy demand from electric vehicles on the operation of power distribution. Although the reverse can be investigated with the proposed framework as well, electricity flowing from a power grid to electric vehicles is the focus of this paper. Major variables in transportation network (including link flows) and power grid (including electricity transmitted) are introduced for the coupling. Roles of charging-in-motion technology and connected vehicle technology have been identified in the framework of supernetwork. A linkage (i.e. individual energy demand) between the two networks is defined to construct the supernetwork. To determine equilibrium of the supernetwork can also answer how many drivers are going to use the charging-in-motion services, in which locations, and at what time frame. An optimal operation plan of power distribution will be decided along the determination simultaneously by which we have a picture about what level of power demand from the grid is expected in locations during an analyzed period. Caveat of the framework and possible applications have also been discussed.

  6. Optimization Strategies for the Vulnerability Analysis of the Electric Power Grid

    SciTech Connect (OSTI)

    Pinar, A.; Meza, J.; Donde, V.; Lesieutre, B.

    2007-11-13

    Identifying small groups of lines, whose removal would cause a severe blackout, is critical for the secure operation of the electric power grid. We show how power grid vulnerability analysis can be studied as a mixed integer nonlinear programming (MINLP) problem. Our analysis reveals a special structure in the formulation that can be exploited to avoid nonlinearity and approximate the original problem as a pure combinatorial problem. The key new observation behind our analysis is the correspondence between the Jacobian matrix (a representation of the feasibility boundary of the equations that describe the flow of power in the network) and the Laplacian matrix in spectral graph theory (a representation of the graph of the power grid). The reduced combinatorial problem is known as the network inhibition problem, for which we present a mixed integer linear programming formulation. Our experiments on benchmark power grids show that the reduced combinatorial model provides an accurate approximation, to enable vulnerability analyses of real-sized problems with more than 10,000 power lines.

  7. Optimization strategies for the vulnerability analysis of the electric power grid.

    SciTech Connect (OSTI)

    Meza, Juan C.; Pinar, Ali; Lesieutre, Bernard; Donde, Vaibhav

    2009-03-01

    Identifying small groups of lines, whose removal would cause a severe blackout, is critical for the secure operation of the electric power grid. We show how power grid vulnerability analysis can be studied as a mixed integer nonlinear programming (minlp) problem. Our analysis reveals a special structure in the formulation that can be exploited to avoid nonlinearity and approximate the original problem as a pure combinatorial problem. The key new observation behind our analysis is the correspondence between the Jacobian matrix (a representation of the feasibility boundary of the equations that describe the flow of power in the network) and the Laplacian matrix in spectral graph theory (a representation of the graph of the power grid). The reduced combinatorial problem is known as the network inhibition problem, for which we present a mixed integer linear programming formulation. Our experiments on benchmark power grids show that the reduced combinatorial model provides an accurate approximation, to enable vulnerability analyses of real-sized problems with more than 10,000 power lines.

  8. Effect of the fast nuclear electromagnetic pulse on the electric power grid nationwide: A different view

    SciTech Connect (OSTI)

    Rabinowitz, M.

    1987-01-01

    This paper primarily considers the potential effects of a single high-altitude nuclear burst on the US power grid. A comparison is made between electromagnetic pulse(EMP) and natural phenomena such as lightning. This paper concludes that EMP is no more harmful to the power grid than its counterparts in nature. An upper limit of the electric field of the very fast, high-amplitude EMP is derived from first principles. The resulting values are significantly lower than the commonly presented values. Additional calculations show that the ionization produced by a nuclear burst severely attenuates the EMP. 21 refs., 2 figs., 6 tabs.

  9. Statistical Analysis of Abnormal Electric Power Grid Behavior

    SciTech Connect (OSTI)

    Ferryman, Thomas A.; Amidan, Brett G.

    2010-10-30

    Pacific Northwest National Laboratory is developing a technique to analyze Phasor Measurement Unit data to identify typical patterns, atypical events and precursors to a blackout or other undesirable event. The approach combines a data-driven multivariate analysis with an engineering-model approach. The method identifies atypical events, provides a plane English description of the event, and the capability to use drill-down graphics for detailed investigations. The tool can be applied to the entire grid, individual organizations (e.g. TVA, BPA), or specific substations (e.g., TVA_CUMB). The tool is envisioned for (1) event investigations, (2) overnight processing to generate a Morning Report that characterizes the previous days activity with respect to previous activity over the previous 10-30 days, and (3) potentially near-real-time operation to support the grid operators. This paper presents the current status of the tool and illustrations of its application to real world PMU data collected in three 10-day periods in 2007.

  10. Energy system development in Africa : the case of grid and off-grid power in Kenya

    E-Print Network [OSTI]

    Steel, Katherine Deaton

    2008-01-01

    This research used a combination of a grounded theory approach and system dynamics to study the electric power system in Kenya and to model the feedback at work in the development of the system. The ethnographic study ...

  11. Power Africa's Beyond the Grid Increasing Access through Small...

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

    the U.S. Government is formally launching an innovative framework under President Obama's Power Africa initiative to increase energy access for underserved populations across...

  12. Large Power Transformers and the U.S. Electric Grid

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

    Transmission Company North American Electrical Reliability Corporation Ontario Power Generation Scott, Daniel U.S. Department of Commerce U.S. Department of Homeland Security U.S....

  13. Exact and Efficient Algorithm to Discover Extreme Stochastic Events in Wind Generation over Transmission Power Grids

    E-Print Network [OSTI]

    Chertkov, Michael; Pan, Feng; Baldick, Ross

    2011-01-01

    In this manuscript we continue the thread of [M. Chertkov, F. Pan, M. Stepanov, Predicting Failures in Power Grids: The Case of Static Overloads, IEEE Smart Grid 2011] and suggest a new algorithm discovering most probable extreme stochastic events in static power grids associated with intermittent generation of wind turbines. The algorithm becomes EXACT and EFFICIENT (polynomial) in the case of the proportional (or other low parametric) control of standard generation, and log-concave probability distribution of the renewable generation, assumed known from the wind forecast. We illustrate the algorithm's ability to discover problematic extreme events on the example of the IEEE RTS-96 model of transmission with additions of 10%, 20% and 30% of renewable generation. We observe that the probability of failure may grow but it may also decrease with increase in renewable penetration, if the latter is sufficiently diversified and distributed.

  14. Preprint for Space Weather Journal (2014) Assessing the impact of space weather on the electric power grid

    E-Print Network [OSTI]

    Schrijver, Karel

    2014-01-01

    Preprint for Space Weather Journal (2014) Assessing the impact of space weather on the electric power grid based on insurance claims for industrial electrical equipment C. J. Schrijver1 , R. Dobbins2 disturbances in the electric power grid. Here, we perform a statistical analysis of 11,242 insurance claims

  15. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. , NO. , 1 Early-stage Power Grid Analysis for Uncertain

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    -stage Power Grid Analysis for Uncertain Working Modes Haifeng Qian, Sani R. Nassif, Senior Member, IEEE the 100-plus watt regime, and power delivery and power grid signal integrity have become critical, and the worst-case scenarios found correlate well with the results from an ILP solver. Index Terms-- Power grid

  16. National Power Grid Simulator Workshop Chartered in 1946 as the nation's first national laboratory, Argonne enters

    E-Print Network [OSTI]

    Kemner, Ken

    (including the verification and validation of newly developed models) is essential, and goes hand in hand#12;National Power Grid Simulator Workshop b #12;1 Chartered in 1946 as the nation's first national are essential to maintain a competitive edge. This is particularly true for the complex transportation system

  17. A Hybrid Multiagent Framework with Q-Learning for Power Grid Systems Restoration

    E-Print Network [OSTI]

    Zhang, Minjie

    . INTRODUCTION In an electricity network, catastrophic disturbances involv- ing loss of generators can lead following catastrophic disturbances involving loss of generators. This framework integrates the advantages such failures, it is necessary to include restoration approaches in power grid systems. The general principle

  18. Parallel domain decomposition for simulation of large-scale power grids

    E-Print Network [OSTI]

    Mohanram, Kartik

    of large-scale linear circuits such as power grids. DD techniques that use non-overlapping and overlap that with the proposed parallel DD framework, existing linear circuit simulators can be extended to handle large- scale can be solved independently in parallel using standard techniques for linear system analysis

  19. Experimental Evaluation of Electric Power Grid Visualization Tools in the EIOC

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Dauenhauer, Peter M.; Wierks, Tamara G.; Podmore, Robin; Dalton, Angela C.

    2009-12-01

    The present study follows an initial human factors evaluation of four electric power grid visualization tools and reports on an empirical evaluation of two of the four tools: Graphical Contingency Analysis, and Phasor State Estimator. The evaluation was conducted within specific experimental studies designed to measure the impact on decision making performance.

  20. An Evaluation of Economy-based Resource Trading and Scheduling on Computational Power Grids for

    E-Print Network [OSTI]

    Melbourne, University of

    1 An Evaluation of Economy-based Resource Trading and Scheduling on Computational Power Grids, Computational Economy, Resource Trading, Nimrod/G Resource Broker, Scheduling, and Parameter Sweep Applications, resource allocation or co-allocation, online control, scalability, transparency, and "economy

  1. CORC Report TR-2005-07 Using mixed-integer programming to solve power grid blackout

    E-Print Network [OSTI]

    Bienstock, Daniel

    CORC Report TR-2005-07 Using mixed-integer programming to solve power grid blackout problems Daniel the blackouts of the U.S. Northeast and Eastern Canada [17] of August 2003, and the September 2003 blackout that affected Italy [19]. In addition, Brazil experienced large blackouts in 1999 (see [15]). These blackouts

  2. Utility Grid-Connected Distributed Power Systems National Solar Energy Conference

    E-Print Network [OSTI]

    capacity and energy benefits. The Solar Buildings Program provides design assistance and incentivesUtility Grid-Connected Distributed Power Systems National Solar Energy Conference ASES Solar 96-effective in these applications by about the year 2000. In the first three years, SMUD has installed over 340 residential

  3. Designing AC Power Grids using Integer Linear Programming

    E-Print Network [OSTI]

    2011-02-18

    view of recent developments in integer linear programming, we revisit a less known .... optimal solution of the DC model was the minimum cost circuit of the network. ... Andersson, G.: Modelling and Analysis of Electric Power Systems (

  4. Volatility of Power Grids Under Real-Time Pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power systems with real-time retail pricing and information asymmetry. Characterized by passing on the ...

  5. The equal load-sharing model of cascade failures in power grids

    E-Print Network [OSTI]

    Scala, Antonio

    2015-01-01

    Electric power-systems are one of the most important critical infrastructures. In recent years, they have been exposed to extreme stress due to the increasing demand, the introduction of distributed renewable energy sources, and the development of extensive interconnections. We investigate the phenomenon of abrupt breakdown of an electric power-system under two scenarios: load growth (mimicking the ever-increasing customer demand) and power fluctuations (mimicking the effects of renewable sources). Our results indicate that increasing the system size causes breakdowns to become more abrupt; in fact, mapping the system to a solvable statistical-physics model indicates the occurrence of a first order transition in the large size limit. Such an enhancement for the systemic risk failures (black-outs) with increasing network size is an effect that should be considered in the current projects aiming to integrate national power-grids into "super-grids".

  6. Power Conversion Architecture for Grid Interface at High Switching Frequency

    E-Print Network [OSTI]

    Perreault, Dave

    voltage from the voltage of energy buffer capacitor. The boost converter is often selected for PFC circuit output powers). Instead of a boost converter, one alternative for the PFC circuit is a buck converter is suitable for realizing miniaturized ac-dc converters operating at high frequencies (HF, above 3 MHz

  7. Two-Stage Robust Power Grid Optimization Problem

    E-Print Network [OSTI]

    2011-01-02

    transmission capacity limits for a given planning horizon (e.g., one week) ... power market was studied in [22], and to estimate the potential contribution of demand flexibility ... Integration in the Liberalised Electricity Markets (WILMAR) model [1]. ... literature, such as inventory theory [8, 9], network design [2], and lot-

  8. The Emerging Interdependence of the Electric Power Grid & Information and Communication Technology

    SciTech Connect (OSTI)

    Taft, Jeffrey D.; Becker-Dippmann, Angela S.

    2015-08-01

    This paper examines the implications of emerging interdependencies between the electric power grid and Information and Communication Technology (ICT). Over the past two decades, electricity and ICT infrastructure have become increasingly interdependent, driven by a combination of factors including advances in sensor, network and software technologies and progress in their deployment, the need to provide increasing levels of wide-area situational awareness regarding grid conditions, and the promise of enhanced operational efficiencies. Grid operators’ ability to utilize new and closer-to-real-time data generated by sensors throughout the system is providing early returns, particularly with respect to management of the transmission system for purposes of reliability, coordination, congestion management, and integration of variable electricity resources such as wind generation.

  9. Probability-Based Software for Grid Optimization: Improved Power System Operations Using Advanced Stochastic Optimization

    SciTech Connect (OSTI)

    2012-02-24

    GENI Project: Sandia National Laboratories is working with several commercial and university partners to develop software for market management systems (MMSs) that enable greater use of renewable energy sources throughout the grid. MMSs are used to securely and optimally determine which energy resources should be used to service energy demand across the country. Contributions of electricity to the grid from renewable energy sources such as wind and solar are intermittent, introducing complications for MMSs, which have trouble accommodating the multiple sources of price and supply uncertainties associated with bringing these new types of energy into the grid. Sandia’s software will bring a new, probability-based formulation to account for these uncertainties. By factoring in various probability scenarios for electricity production from renewable energy sources in real time, Sandia’s formula can reduce the risk of inefficient electricity transmission, save ratepayers money, conserve power, and support the future use of renewable energy.

  10. Optimal Power System and Grid Interface Design Considerations for the CLICs Klystron Modulators

    E-Print Network [OSTI]

    Marija, Jankovic; Jon, Clare; Pat, Wheeler; Davide, Aguglia

    2015-01-01

    The Compact Linear Collider (CLIC) is an electron-positron collider under study at CERN with the aim to explore the next generation of high precision/high energy particles physics. The CLIC’s drive beams will be accelerated by approximately 1300 klystrons, requiring highly efficient and controllable solid state capacitor discharge modulators. Capacitor charger specifications include the requirement to mask the pulsed effect of the load from the utility grid, ensure maximum power quality, control the derived DC voltage precisely (to maximize accuracy for the modulators being implemented), and achieve high efficiency and operability of the overall power system. This paper presents the work carried out on the power system interface for the CLIC facility. In particular it discusses the challenges on the utility interface and analysis of the grid interface converters with regards to required functionality, efficiency, and control methodologies.

  11. Reducing the Vulnerability of Electric Power Grids to Terrorist Attacks

    SciTech Connect (OSTI)

    Ross Baldick; Thekla Boutsika; Jin Hur; Manho Joung; Yin Wu; Minqi Zhong

    2009-01-31

    This report describes the development of a cascading outage analyzer that, given an initial disturbance on an electric power system, checks for thermal overloads, under-frequency and over-frequency conditions, and under-voltage conditions that would result in removal of elements from the system. The analyzer simulates the successive tripping of elements due to protective actions until a post-event steady state or a system blackout is reached.

  12. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. , NO. , 1 Power Grid Analysis using Random Walks

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    . Sapatnekar, Fellow, IEEE Abstract-- This paper presents a class of power grid analyzers based on a random out efficiently. For example, DC analysis of a 71K-node power grid with C4 pads takes 4.16 seconds; a 348K-node wire-bond DC power grid is solved in 93.64 seconds; RKC analysis of a 642K-node power grid

  13. Using System Dynamics to Define, Study, and Implement Smart Control Strategies on the Electric Power Grid

    SciTech Connect (OSTI)

    Lyle G. Roybal; Robert F Jeffers

    2013-07-01

    The United States electric power grid is the most complex and expansive control system in the world. Local generation control occurs at individual units based on response time and unit economics, larger regional control coordinates unit response to error conditions, and high level large-area regional control is ultimately administered by a network of humans guided by economic and resiliency related factors. Under normal operating conditions, the grid is a relatively slow moving entity that exhibits high inertia to outside stimuli, and behaves along repeatable diurnal and seasonal patterns. However, that paradigm is quickly changing because of the increasing implementation of renewable generation sources. Renewable generators by nature cannot be tightly controlled or scheduled. They appear like a negative load to the system with all of the variability associated with load on a larger scale. Also, grid-reactive loads (i.e. smart devices) can alter their consumption based on price or demand rules adding more variability to system behavior. This paper demonstrates how a systems dynamic modeling approach capable of operating over multiple time scales, can provide valuable insight into developing new “smart-grid” control strategies and devices needed to accommodate renewable generation and regulate the frequency of the grid.

  14. Indianapolis Power and Light Company Smart Grid Project | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy ResourcesOrder at 8, 13 (Vt. Water Res.:01EnergyIndianapolis Power

  15. NREL: Transmission Grid Integration - Solar Power Data for Integration

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines lightGeospatial ToolkitSMARTS -BeingFutureResearch Staff

  16. Beacon Power Corporation Smart Grid Demonstration Project | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC Jump to:Greece:Bajo en Carbono,BeWind Power Ltd

  17. Long Island Power Authority Smart Grid Demonstration Project | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EAInvervarLeeds, UnitedLibertyLite OnCounty Coop PowerEconomics

  18. 908 IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 16, NO. 7, JULY 2008 On-Chip Power Distribution Grids With

    E-Print Network [OSTI]

    Kolodny, Avinoam

    -Chip Power Distribution Grids With Multiple Supply Voltages for High-Performance Integrated Circuits Mikhail Abstract--On-chip power distribution grids with multiple supply voltages are discussed in this paper. Two types of interdig- itated and paired power distribution grids with multiple supply voltages and multiple

  19. Redundancy Method to assess Electromigration Lifetime in power grid design Boukary OUATTARA 1,2, Lise DOYEN 1, David NEY 1, Habib MEHREZ 2 , Pirouz BAZARGAN-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Redundancy Method to assess Electromigration Lifetime in power grid design Boukary OUATTARA 1). This phenomenon becomes critical in deep submicron design technology. In this paper we assess chip power grid prediction. In this paper we analyze the impact of EM degradation in power grid on a chip functionalities. We

  20. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 30, NO. 5, MAY 2011 691 Fast Vectorless Power Grid Verification

    E-Print Network [OSTI]

    Najm, Farid N.

    2011 691 Fast Vectorless Power Grid Verification Under an RLC Model Nahi H. Abdul Ghani, Student Member that the power grid provides the underlying logic circuitry with voltage levels that are within specified ranges and scalable. Index Terms--Integrated circuits, overshoot, power grid, ver- ification, voltage drop. I

  1. 738 IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 27, NO. 4, APRIL 2008 Power Grid Analysis and Optimization

    E-Print Network [OSTI]

    Hu, Jiang

    , APRIL 2008 Power Grid Analysis and Optimization Using Algebraic Multigrid Cheng Zhuo, Student Member of power grid analy- sis and optimization techniques, all of which are based on the algebraic of reducing the problem size for power grid analysis and optimization. Next, with the proposed reduction

  2. Grid Impacts of Wind Power Variability: Recent Assessments from a Variety of Utilities in the United States; Preprint

    SciTech Connect (OSTI)

    Parsons, B.; Milligan, M.; Smith, J. C.; DeMeo, E.; Oakleaf, B.; Wolf, K.; Schuerger, M.; Zavadil, R.; Ahlstrom, M.; Nakafuji, D. Y.

    2006-07-01

    Because of wind power's unique characteristics, many concerns are based on the increased variability that wind contributes to the grid, and most U.S. studies have focused on this aspect of wind generation. Grid operators are also concerned about the ability to predict wind generation over several time scales. In this report, we quantify the physical impacts and costs of wind generation on grid operations and the associated costs.

  3. Volatility of Power Grids under Real-Time Pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij; Mitter, Sanjoy K

    2011-01-01

    The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power system with real-time retail pricing and information asymmetry. Real-time retail pricing is characterized by passing on the real-time wholesale electricity prices to the end consumers, and is shown to create a closed-loop feedback system between the physical layer and the market layer of the power system. In the absence of a carefully designed control law, such direct feedback between the two layers could increase volatility and lower the system's robustness to uncertainty in demand and generation. A new notion of generalized price-elasticity is introduced, and it is shown that price volatility can be characterized in terms of the system's maximal relative price elasticity, defined as the maximal ratio of the generalized price-elasticity of consumers to that of the producers. As this ratio increases, the system becomes more volatile, and eventually, unstable. As new demand response technolo...

  4. Transmission Power Allocation for Cooperative Relay-BasedNeighborhood Area Networks for Smart Grid

    E-Print Network [OSTI]

    Kai, Ma; Guoqiang, Hu; Spanos, Costas

    2013-01-01

    Architecture for the Smart Grid, IEEE Network, vol. 25, no.to-Machine Communications in Smart Grid. IEEE CommunicationCommunications Infrastructure for Smart Grid. IEEE Network,

  5. Understanding the Benefits of Dispersed Grid-Connected Photovoltaics: From Avoiding the Next Major Outage to Taming Wholesale Power Markets

    SciTech Connect (OSTI)

    Letendre, Steven E.; Perez, Richard

    2006-07-15

    Thanks to new solar resource assessment techniques using cloud cover data available from geostationary satellites, it is apparent that grid-connected PV installations can serve to enhance electric grid reliability, preventing or hastening recovery from major power outages and serving to mitigate extreme price spikes in wholesale energy markets. (author)

  6. Message Passing for Integrating and Assessing Renewable Generation in a Redundant Power Grid

    E-Print Network [OSTI]

    Zdeborová, Lenka; Chertkov, Michael

    2009-01-01

    A simplified model of a redundant power grid is used to study integration of fluctuating renewable generation. The grid consists of large number of generator and consumer nodes. The net power consumption is determined by the difference between the gross consumption and the level of renewable generation. The gross consumption is drawn from a narrow distribution representing the predictability of aggregated loads, and we consider two different distributions representing wind and solar resources. Each generator is connected to D consumers, and redundancy is built in by connecting R of these consumers to other generators. The lines are switchable so that at any instance each consumer is connected to a single generator. We explore the capacity of the renewable generation by determining the level of "firm" generation capacity that can be displaced for different levels of redundancy R. We also develop message-passing control algorithm for finding switch settings where no generator is overloaded.

  7. Tutorial of Wind Turbine Control for Supporting Grid Frequency through Active Power Control: Preprint

    SciTech Connect (OSTI)

    Aho, J.; Buckspan, A.; Laks, J.; Fleming, P.; Jeong, Y.; Dunne, F.; Churchfield, M.; Pao, L.; Johnson, K.

    2012-03-01

    As wind energy becomes a larger portion of the world's energy portfolio and wind turbines become larger and more expensive, wind turbine control systems play an ever more prominent role in the design and deployment of wind turbines. The goals of traditional wind turbine control systems are maximizing energy production while protecting the wind turbine components. As more wind generation is installed there is an increasing interest in wind turbines actively controlling their power output in order to meet power setpoints and to participate in frequency regulation for the utility grid. This capability will be beneficial for grid operators, as it seems possible that wind turbines can be more effective at providing some of these services than traditional power plants. Furthermore, establishing an ancillary market for such regulation can be beneficial for wind plant owner/operators and manufacturers that provide such services. In this tutorial paper we provide an overview of basic wind turbine control systems and highlight recent industry trends and research in wind turbine control systems for grid integration and frequency stability.

  8. Zihan Xu xuz@seas.wustl.edu (A survey paper written under guidance of Prof. Raj Jain) Since the existing power grid is designed neither by latest technologies nor to comply with rapidly climate changes, a new intelligent power grid is

    E-Print Network [OSTI]

    Jain, Raj

    Abstract: Since the existing power grid is designed neither by latest technologies nor to comply with rapidly climate changes, a new intelligent power grid is urgently needed and will soon be applied to power and obstacles of its developments. Keywords: Smart Grid; Power Systems; Self-healing; Customers Participation

  9. Modeling Framework and Validation of a Smart Grid and Demand Response System for Wind Power Integration

    SciTech Connect (OSTI)

    Broeer, Torsten; Fuller, Jason C.; Tuffner, Francis K.; Chassin, David P.; Djilali, Ned

    2014-01-31

    Electricity generation from wind power and other renewable energy sources is increasing, and their variability introduces new challenges to the power system. The emergence of smart grid technologies in recent years has seen a paradigm shift in redefining the electrical system of the future, in which controlled response of the demand side is used to balance fluctuations and intermittencies from the generation side. This paper presents a modeling framework for an integrated electricity system where loads become an additional resource. The agent-based model represents a smart grid power system integrating generators, transmission, distribution, loads and market. The model incorporates generator and load controllers, allowing suppliers and demanders to bid into a Real-Time Pricing (RTP) electricity market. The modeling framework is applied to represent a physical demonstration project conducted on the Olympic Peninsula, Washington, USA, and validation simulations are performed using actual dynamic data. Wind power is then introduced into the power generation mix illustrating the potential of demand response to mitigate the impact of wind power variability, primarily through thermostatically controlled loads. The results also indicate that effective implementation of Demand Response (DR) to assist integration of variable renewable energy resources requires a diversity of loads to ensure functionality of the overall system.

  10. Global model of a gridded-ion thruster powered by a radiofrequency inductive coil

    SciTech Connect (OSTI)

    Chabert, P.; Arancibia Monreal, J.; Bredin, J.; Popelier, L.; Aanesland, A. [LPP, CNRS, Ecole Polytechnique, UPMC, Paris XI, 91128 Palaiseau (France)

    2012-07-15

    A global (volume-averaged) model of a gridded-ion thruster is proposed. The neutral propellant (xenon gas) is injected into the thruster chamber at a fixed rate and a plasma is generated by circulating a radiofrequency current in an inductive coil. The ions generated in this plasma are accelerated out of the thruster by a pair of DC biased grids. The neutralization downstream is not treated. Xenon atoms also flow out of the thruster across the grids. The model, based on particle and energy balance equations, solves for four global variables in the thruster chamber: the plasma density, the electron temperature, the neutral gas (atom) density, and the neutral gas temperature. The important quantities to evaluate the thruster efficiency and performances are calculated from these variables and from the voltage across the grids. It is found that the mass utilization efficiency rapidly decreases with the gas flow rate. However, the radiofrequency power transfer efficiency increases significantly with the injected gas flow rate. Therefore, there is a compromise to be found between these two quantities.

  11. Smart Grid Data Integrity Attack

    E-Print Network [OSTI]

    Poolla, Kameshwar

    2012-01-01

    Reliability for Improved Grid Security,” IEEE TransmissionNext Generation Power Grid Security, Syngress, 2010. [12] A.Grids,” 16th ACM Conference on Computer and Communications Security,

  12. A High Performance Computing Network and System Simulator for the Power Grid: NGNS^2

    SciTech Connect (OSTI)

    Villa, Oreste; Tumeo, Antonino; Ciraci, Selim; Daily, Jeffrey A.; Fuller, Jason C.

    2012-11-11

    Designing and planing next generation power grid sys- tems composed of large power distribution networks, monitoring and control networks, autonomous generators and consumers of power requires advanced simulation infrastructures. The objective is to predict and analyze in time the behavior of networks of systems for unexpected events such as loss of connectivity, malicious attacks and power loss scenarios. This ultimately allows one to answer questions such as: “What could happen to the power grid if ...”. We want to be able to answer as many questions as possible in the shortest possible time for the largest possible systems. In this paper we present a new High Performance Computing (HPC) oriented simulation infrastructure named Next Generation Network and System Simulator (NGNS2 ). NGNS2 allows for the distribution of a single simulation among multiple computing elements by using MPI and OpenMP threads. NGNS2 provides extensive configuration, fault tolerant and load balancing capabilities needed to simulate large and dynamic systems for long periods of time. We show the preliminary results of the simulator running approximately two million simulated entities both on a 64-node commodity Infiniband cluster and a 48-core SMP workstation.

  13. Enhanced Short-Term Wind Power Forecasting and Value to Grid Operations: Preprint

    SciTech Connect (OSTI)

    Orwig, K.; Clark, C.; Cline, J.; Benjamin, S.; Wilczak, J.; Marquis, M.; Finley, C.; Stern, A.; Freedman, J.

    2012-09-01

    The current state of the art of wind power forecasting in the 0- to 6-hour time frame has levels of uncertainty that are adding increased costs and risk on the U.S. electrical grid. It is widely recognized within the electrical grid community that improvements to these forecasts could greatly reduce the costs and risks associated with integrating higher penetrations of wind energy. The U.S. Department of Energy has sponsored a research campaign in partnership with the National Oceanic and Atmospheric Administration (NOAA) and private industry to foster improvements in wind power forecasting. The research campaign involves a three-pronged approach: 1) a 1-year field measurement campaign within two regions; 2) enhancement of NOAA's experimental 3-km High-Resolution Rapid Refresh (HRRR) model by assimilating the data from the field campaign; and 3) evaluation of the economic and reliability benefits of improved forecasts to grid operators. This paper and presentation provides an overview of the regions selected, instrumentation deployed, data quality and control, assimilation of data into HRRR, and preliminary results of HRRR performance analysis.

  14. IMPACTS ASSESSMENT OF PLUG-IN HYBRID VEHICLES ON ELECTRIC UTILITIES AND REGIONAL U.S. POWER GRIDS

    E-Print Network [OSTI]

    IMPACTS ASSESSMENT OF PLUG-IN HYBRID VEHICLES ON ELECTRIC UTILITIES AND REGIONAL U.S. POWER GRIDS National Laboratory(a) ABSTRACT The U.S. electric power infrastructure is a strategic national asset of shifting emissions from millions of individual vehicles to a relatively few number of power plants. Overall

  15. Demand Side Management in the Smart Grid: Information Processing for the Power Switch

    SciTech Connect (OSTI)

    Alizadeh, Mahnoosh; LI, Xiao; Wang, Zhifang; Scagilone, Anna; Melton, Ronald B.

    2012-09-01

    In this article we discuss the most recent developments in the area of load management, and consider possible interaction schemes of novel architectures with distributed energy resources (DER). In order to handle the challenges faced by tomorrow’s smart grid, which are caused by volatile load and generation profiles (from the large number of plug-in EVs and from renewable integration), the conventional grid operating principle of load-following needs to be changed into load-shaping or generation-following. Demand Side Management will be a most promising and powerful solution to the above challenges. However, many other issues such as load forecasting, pricing structure, market policy, renewable integration interface, and even the AC/DC implementation at the distribution side, need to be taken into the design in order to search for the most effective and applicable solution.

  16. Voltage multi-stability in distribution grids with power flow reversal

    E-Print Network [OSTI]

    Hung D. Nguyen; Konstantin Turitsyn

    2014-07-08

    High levels of penetration of distributed generation and aggressive reactive power compensation with modern power electronics may result in the reversal of active and reactive power flows in future distribution grids. The voltage stability of these operating conditions may be very different from the more traditional power consumption regime. We study the stability characteristics of distribution networks with reversed power flow. After introducing a universal algebraic approach to characterize all the solutions of the power flow equations, we show that new solutions appear in the reversed power flow regime even in the simplest three bus systems. We show that the some of these solutions are stable and the system may exhibit a phenomenon of multistability, where multiple stable equilibria co-exist at the given set of parameters, and the system may converge to an undesirable equilibrium after a disturbance. These predictions are validated with dynamic simulations of two different systems. Under certain conditions the new states are viable and may be characterized by relatively high voltages. Possible approaches towards reactive power/voltage regulation as well as permissible distributed generation capacity in future power systems are proposed and discussed in the end of the paper.

  17. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    electrification, part 9-2: Microgrids,” IEC/TS 62257-9-2the role of mini-grids/microgrids is fundamentally differentspecifications addresses microgrids, though it does not

  18. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    on renewable energy project development in India, includingagency GIZ and India’s Ministry of New and Renewable Energy,indias-grid-expansion-erodes-island-solar-scheme Energy Services Delivery/Renewable

  19. Wide-Area Situational Awareness of Power Grids with Limited Phasor Measurements

    SciTech Connect (OSTI)

    Zhou, Ning; Huang, Zhenyu; Nieplocha, Jarek; Nguyen, Tony B.

    2006-09-30

    Lack of situational awareness has been identified as one of root causes for the August 14, 2003 Northeast Blackout in North America. To improve situational awareness, the Department of Energy (DOE) launched several projects to deploy Wide Area Measurement Systems (WAMS) in different interconnections. Compared to the tens of thousands of buses, the number of Phasor Measurement Units (PMUs) is quite limited and not enough to achieve the observability for the whole interconnections. To utilize the limited number of PMU measurements to improve situational awareness, this paper proposes to combine PMU measurement data and power flow equations to form a hybrid power flow model. Technically, a model which combines the concept of observable islands and modeling of power flow conditions, is proposed. The model is called a Hybrid Power Flow Model as it has both PMU measurements and simulation assumptions, which describes prior knowledge available about whole power systems. By solving the hybrid power flow equations, the proposed method can be used to derive power system states to improve the situational awareness of a power grid.

  20. 1926 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 27, NO. 4, NOVEMBER 2012 Volatility of Power Grids Under Real-Time Pricing

    E-Print Network [OSTI]

    Mitter, Sanjoy K.

    of the dynamics of supply, demand, and clearing prices in power systems with real-time retail pricing1926 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 27, NO. 4, NOVEMBER 2012 Volatility of Power Grids consumers, real-time pricing creates a closed-loop feedback system between the physical layer and the market

  1. Community consistency determines the stability transition window of power-grid nodes

    E-Print Network [OSTI]

    Kim, Heetae; Holme, Petter

    2015-01-01

    The synchrony of electric power systems is important in order to maintain stable electricity supply. Recently, the measure basin stability was introduced to quantify a node's ability to recover its synchronization when perturbed. In this work, we focus on how basin stability depends on the coupling strength between nodes. We use the Chilean power grid as a case study. In general, the basin stability goes from zero to one as the coupling strength increases. However, this transition does happen for the same values for different nodes. By understanding the transition for individual nodes, we can further characterize their role in the power-transmission dynamics. We find that nodes with an exceptionally large transition window also have a low community consistency. In other words, they are hard to classify into one community when applying a community detection algorithm to the network. This also gives an efficient way to identify nodes with a long transition window (which is a computationally time-consuming task)...

  2. Transmission Power Allocation for Cooperative Relay-BasedNeighborhood Area Networks for Smart Grid

    E-Print Network [OSTI]

    Spanos, Costas; Kai, Ma; Guo-Qiang, HU

    2013-01-01

    in smart grid, in order to reduce the electricity cost forin smart grid, in order to reduce the electricity cost. Thesmart grid, in order to combat fading without considering the cost

  3. Transmission Power Allocation for Cooperative Relay-BasedNeighborhood Area Networks for Smart Grid

    E-Print Network [OSTI]

    Spanos, Costas; Kai, Ma; Guo-Qiang, HU

    2013-01-01

    Architecture for the Smart Grid, IEEE Network, vol. 25, no.to-Machine Communications in Smart Grid. IEEE CommunicationInfrastructure for Smart Grid. IEEE Network, vol. 25, no.5,

  4. Data quality assurance and performance measurement of data mining for preventive maintenance of power grid

    E-Print Network [OSTI]

    Wu, Leon

    2011-01-01

    Ensuring reliability as the electrical grid morphs into the "smart grid" will require innovations in how we assess the state of the grid, for the purpose of proactive maintenance, rather than reactive maintenance; in the ...

  5. The nuclear electromagnetic pulse and the electric power grid: A different perspective: Special report

    SciTech Connect (OSTI)

    Rabinowitz, M.

    1987-10-01

    This report primarily considers the potential effects of a single high-altitude nuclear burst on the US power grid. It describes various types of electromagnetic pulses (EMP) from a nuclear explosion and provides a brief historical overview of EMP. A comparison is made between EMP and natural phenomena such as lightning and solar storms. This report concludes that EMP effects are exaggerated because of an unrealistic assumption of the pulse that can be seen by the power system. An upper limit of the electric field of the very fast, high-amplitude EMP is derived from first principles. The resulting values indicate that although electric fields approaching 50 kV/m might be obtained locally, the energy content is significantly lower than the commonly presented values, and the electric field decreases rapidly with distance. Additional calculations show that the ionization produced by a nuclear burst severely attenuates the EMP. These findings all indicate that EMP damage to the US power grid in equipment flashovers and line flashovers from a high-altitude nuclear bomb will be negligible, except for localized damage to some unshielded electronic control systems. Since it is difficult to make accurate calculations of the coupling of EMP into complex electronic systems, this report relies on the results of other studies which indicate the possibility of minimal damage. 42 refs., 23 figs., 6 tabs.

  6. AVTA: Vehicle to Grid Power Flow Regulations and Building Codes Review

    Broader source: Energy.gov [DOE]

    The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following report is a review of Vehicle-to-Grid power flow regulations and building codes, as informed by the AVTA's testing on plug-in electric vehicle charging equipment. This research was conducted by Idaho National Laboratory.

  7. Integrating a significant amount of wind power generation into bulk power grid is a primary task for building a cost-effective renewable portfolio and a sustainable energy infrastructure. The uncertainty

    E-Print Network [OSTI]

    DeMara, Ronald F.

    Integrating a significant amount of wind power generation into bulk power grid is a primary task. This talk will be focused on modeling the spatial correlation of wind power from farm level to grid level and spatial correlation of wind farm power generation have posed new challenges to power system operations

  8. Control and Optimization Meet the Smart Power Grid: Scheduling of Power Demands for Optimal Energy

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    technologies to enforce sensible use of energy through effective demand load management. We envision a scenario of effective management of power supply and demand loads. Load management is primarily employed by the power by transferring non-emergency power demands at off-peak-load times. Demand load management does not significantly

  9. A High Performance Computing Platform for Performing High-Volume Studies With Windows-based Power Grid Tools

    SciTech Connect (OSTI)

    Chen, Yousu; Huang, Zhenyu

    2014-08-31

    Serial Windows-based programs are widely used in power utilities. For applications that require high volume simulations, the single CPU runtime can be on the order of days or weeks. The lengthy runtime, along with the availability of low cost hardware, is leading utilities to seriously consider High Performance Computing (HPC) techniques. However, the vast majority of the HPC computers are still Linux-based and many HPC applications have been custom developed external to the core simulation engine without consideration for ease of use. This has created a technical gap for applying HPC-based tools to today’s power grid studies. To fill this gap and accelerate the acceptance and adoption of HPC for power grid applications, this paper presents a prototype of generic HPC platform for running Windows-based power grid programs on Linux-based HPC environment. The preliminary results show that the runtime can be reduced from weeks to hours to improve work efficiency.

  10. PUBLISHED ONLINE: 10 FEBRUARY 2013 | DOI: 10.1038/NPHYS2535 Spontaneous synchrony in power-grid networks

    E-Print Network [OSTI]

    Loss, Daniel

    phenomenon that can occur spontaneously, that keeps all connected generators in pace, and whose failure condition for the functioning of a power-grid network is that its power generators remain synchronized this condition to identify tunable parameters of the generators that are determinants of spontaneous

  11. FORECAST OF ENSEMBLE POWER PRODUCTION BY GRID-CONNECTED PV SYSTEMS Elke Lorenz*, Detlev Heinemann*, Hashini Wickramarathne*, Hans Georg Beyer +

    E-Print Network [OSTI]

    Heinemann, Detlev

    of Physics, Energy and Semiconductor Research Laboratory, Energy Meteorology Group, 26111 Oldenburg, GermanyH, Spicherer Straße 48, D-86157 Augsburg, Germany ABSTRACT: The contribution of power production by PV systemsFORECAST OF ENSEMBLE POWER PRODUCTION BY GRID-CONNECTED PV SYSTEMS Elke Lorenz*, Detlev Heinemann

  12. Proposal to negotiate the renewal of a blanket purchase contract for the supply of high-power RF grid-tubes for the CERN accelerators

    E-Print Network [OSTI]

    2014-01-01

    Proposal to negotiate the renewal of a blanket purchase contract for the supply of high-power RF grid-tubes for the CERN accelerators

  13. Real power regulation for the utility power grid via responsive loads

    DOE Patents [OSTI]

    McIntyre, Timothy J [Knoxville, TN; Kirby, Brendan J [Knoxville, TN; Kisner, Roger A

    2009-05-19

    A system for dynamically managing an electrical power system that determines measures of performance and control criteria for the electric power system, collects at least one automatic generation control (AGC) input parameter to at least one AGC module and at least one automatic load control (ALC) input parameter to at least one ALC module, calculates AGC control signals and loads as resources (LAR) control signals in response to said measures of performance and control criteria, propagates AGC control signals to power generating units in response to control logic in AGC modules, and propagates LAR control signals to at least one LAR in response to control logic in ALC modules.

  14. Visions of Future Intelligent Power Grids: Synergies for Collaboration Between the European Union and the United States

    SciTech Connect (OSTI)

    Coll-Mayor, Debora; Paget, Mia L.; Lightner, Eric M.; Sanchez-Jimenez, Manuel

    2007-01-01

    The future of power grids is expected to involve an increasing level of intelligence and integration of new information and communication technologies in every aspect of the electricity system, from demand-side devices to wide-scale distributed generation to a variety of energy markets. The vision of this future in the United States and the European Union is known as GridWiseTM and SmartGrid, respectively. The results of the examination of similarities and complementarities of the two research programs are presented in this paper. Within the framework of a solid precedence for trans-Atlantic cooperation in energy research, the time would seem optimal to set in motion active collaboration and educational exchange on GridWise and SmartGrid research. This paper will provide energy professionals with a comparison of the solutions developed in each case, to be aware of trans-Atlantic approaches, opportunities, and resources looking toward future, more intelligent and interconnected power grids.

  15. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    are waived for solar projects that do not sell power to thethat convert DC power to AC. Since solar PV modules produce

  16. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    from different sources: wind, solar, and diesel. ” Productsphotovoltaic (PV), wind power, and even diesel generators.

  17. RTDS-Based Design and Simulation of Distributed P-Q Power Resources in Smart Grid

    E-Print Network [OSTI]

    Taylor, Zachariah David

    2014-01-01

    micro-wind turbines are connected to grid by cascading rectifier stages with an inverter stage. Energy storage

  18. Naturalistic Decision Making in Power Grid Operations: Implications for Dispatcher Training and Usability Testing

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Podmore, Robin

    2008-11-17

    The focus of the present study is on improved training approaches to accelerate learning and improved methods for analyzing effectiveness of tools within a high-fidelity power grid simulated environment. A theory-based model has been developed to document and understand the mental processes that an expert power system operator uses when making critical decisions. The theoretical foundation for the method is based on the concepts of situation awareness, the methods of cognitive task analysis, and the naturalistic decision making (NDM) approach of Recognition Primed Decision Making. The method has been systematically explored and refined as part of a capability demonstration of a high-fidelity real-time power system simulator under normal and emergency conditions. To examine NDM processes, we analyzed transcripts of operator-to-operator conversations during the simulated scenario to reveal and assess NDM-based performance criteria. The results of the analysis indicate that the proposed framework can be used constructively to map or assess the Situation Awareness Level of the operators at each point in the scenario. We can also identify the mental models and mental simulations that the operators employ at different points in the scenario. This report documents the method, describes elements of the model, and provides appendices that document the simulation scenario and the associated mental models used by operators in the scenario.

  19. Community consistency determines the stability transition window of power-grid nodes

    E-Print Network [OSTI]

    Heetae Kim; Sang Hoon Lee; Petter Holme

    2015-04-28

    The synchrony of electric power systems is important in order to maintain stable electricity supply. Recently, the measure basin stability was introduced to quantify a node's ability to recover its synchronization when perturbed. In this work, we focus on how basin stability depends on the coupling strength between nodes. We use the Chilean power grid as a case study. In general, basin stability goes from zero to one as coupling strength increases. However, this transition does not happen at the same value for different nodes. By understanding the transition for individual nodes, we can further characterize their role in the power-transmission dynamics. We find that nodes with an exceptionally large transition window also have a low community consistency. In other words, they are hard to classify to one community when applying a community detection algorithm. This also gives an efficient way to identify nodes with a long transition window (which is computationally time consuming). Finally, to corroborate these results, we present a stylized example network with prescribed community structures that captures the mentioned characteristics of basin stability transition and recreates our observations.

  20. Prospects for Grid-Computing in Future Power Networks Prof. Malcolm Irving1

    E-Print Network [OSTI]

    Taylor, Gary

    also co-operate) in providing reliable, cheap and sustainable electrical energy supply. 2.1 The nature be as readily available as electrical energy by simply `plugging in to a Grid'. This short article is intended. Grid-Computing Grid-computing has a good pedigree. It is championed by the same people that brought us

  1. IEEE Network September/October 20112 0890-8044/11/$25.00 2011 IEEE he smart power grid uses information and communica-

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    IEEE Network · September/October 20112 0890-8044/11/$25.00 © 2011 IEEE he smart power grid uses, distributed micro-generator premises, and electric storage premises. Smart metering and two-way com, grid reliability is increased, as the likelihood of power outage due to sudden increase of demand

  2. Real Power Regulation for the Utility Power Grid via Responsive Loads -

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts on GlobalRachel2RateCaseElementsOxide FuelReadofEnergy

  3. Modeling and Control of Discrete Event Systems Using Finite State Machines with Variables and Their Applications in Power Grids

    E-Print Network [OSTI]

    Zhang, Hongwei

    of electric power grids. Keywords: control synthesis; discrete event systems; finite state machines; PHEVModeling and Control of Discrete Event Systems Using Finite State Machines with Variables,e , and Hongwei Zhangf a Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI

  4. A Bidirectional High-Power-Quality Grid Interface With a Novel Bidirectional Noninverted Buck Boost Converter for PHEVs

    SciTech Connect (OSTI)

    Onar, Omer C

    2012-01-01

    Plug-in hybrid electric vehicles (PHEVs) will play a vital role in future sustainable transportation systems due to their potential in terms of energy security, decreased environmental impact, improved fuel economy, and better performance. Moreover, new regulations have been established to improve the collective gas mileage, cut greenhouse gas emissions, and reduce dependence on foreign oil. This paper primarily focuses on two major thrust areas of PHEVs. First, it introduces a grid-friendly bidirectional alternating current/direct current ac/dc dc/ac rectifier/inverter for facilitating vehicle-to-grid (V2G) integration of PHEVs. Second, it presents an integrated bidirectional noninverted buck boost converter that interfaces the energy storage device of the PHEV to the dc link in both grid-connected and driving modes. The proposed bidirectional converter has minimal grid-level disruptions in terms of power factor and total harmonic distortion, with less switching noise. The integrated bidirectional dc/dc converter assists the grid interface converter to track the charge/discharge power of the PHEV battery. In addition, while driving, the dc/dc converter provides a regulated dc link voltage to the motor drive and captures the braking energy during regenerative braking.

  5. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    of Distributed Resource Island Systems with Electric Powerguidance on operating island systems in these variousof Distributed Resource Island Systems with Electric Power

  6. A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW

    E-Print Network [OSTI]

    Greacen, Chris

    2014-01-01

    guidance on operating island systems in these variousof Distributed Resource Island Systems with Electric Powerof Distributed Resource Island Systems with Electric Power

  7. PVGIS approach for assessing the performances of the first PV grid-connected power plant in Morocco

    E-Print Network [OSTI]

    Barhdadi, Abdelfettah

    2012-01-01

    In this paper, we apply the PVGIS method for estimating the performance of the first grid-connected PV micro-power plant in Morocco. PVGIS approach provides analysis and assessment of in-site solar energy resources and predicts with good accuracy the potential of PV systems in term of electricity production. We find that annual total power generation of the micro-power is slightly higher than that initially expected at the installation stage and actually measured. The yearly predicted and measured power production values agree to about 2 %. However, individual monthly production can have larger discrepancy.

  8. Transmission Power Allocation for Cooperative Relay-BasedNeighborhood Area Networks for Smart Grid

    E-Print Network [OSTI]

    Kai, Ma; Guoqiang, Hu; Spanos, Costas

    2013-01-01

    cost of consumers in smart buildings, and also balance thecost of consumers in smart buildings. without relay Totalarea networks in smart grid, where the building gateway with

  9. Feasibility of Hybrid Retrofits to Off-Grid Diesel Power Plants in the Philippines

    SciTech Connect (OSTI)

    Barley, C. D.; Flowers, L. T.; Benavidez, P. J.; Abergas, R. L.; Barruela, R. B.

    1999-08-01

    The Strategic Power Utilities Group (SPUG) of the National Power Corporation (NPC) in the Philippines owns and operates about 100 power plants, mostly fueled by diesel, ranging in energy production from about 15 kilowatt-hours (kWh)/day to 106,000 kWh/day. Reducing the consumption of diesel fuel in these plants, along with the associated financial losses, is a priority for SPUG. The purpose of this study is to estimate the potential fuel and cost savings that might be achieved by retrofitting hybrid power systems to these existing diesel plants. As used in this report, the term ''hybrid system'' refers to any combination of wind turbine generators (WTGs), photovoltaic (PV) modules, lead-acid batteries, and an AC/DC power converter (either an electronic inverter or a rotary converter), in addition to the existing diesel gensets. The resources available for this study did not permit a detailed design analysis for each of the plants. Instead, the following five-step process was used: (1) Tabulate some important characteristics of all the plants. (2) Group the plants into categories (six classes) with similar characteristics. (3) For each class of system, identify one plant that is representative of the class. (4) For each representative plant, perform a moderately detailed prefeasibility analysis of design options. (5) Summarize and interpret the results. The analysis of each representative plant involved the use of time-series computer simulation models to estimate the fuel usage, maintenance expenses, and cash flow resulting from various designs, and to search the domain of possible designs for the one leading to the lowest life-cycle cost. Cost items that would be unaffected by the retrofit, such as operator salaries and the capital cost of existing equipment, were not included in the analysis. Thus, the results are reported as levelized cost of energy (COE) savings: the difference between the cost of the existing diesel-only system and that of an optimized hybrid system, expressed in units of U.S. dollars per kWh (US$/kWh) of energy production. This analysis is one phase of a study entitled ''Analysis of Renewable Energy Retrofit Options to Existing Diesel Mini-Grids,'' funded by the Asia-Pacific Economic Cooperation (APEC) and the U.S. Department of Energy (DOE), and performed jointly by NPC, the U.S. National Renewable Energy Laboratory (NREL), and Sustainable Energy Solutions in New York, New York (Morris et al. 1998). A more detailed version of this paper is included in that report.

  10. PhotoVoltaic distributed generation for Lanai power grid real-time simulation and control integration scenario.

    SciTech Connect (OSTI)

    Robinett, Rush D., III; Kukolich, Keith; Wilson, David Gerald; Schenkman, Benjamin L.

    2010-06-01

    This paper discusses the modeling, analysis, and testing in a real-time simulation environment of the Lanai power grid system for the integration and control of PhotoVoltaic (PV) distributed generation. The Lanai Island in Hawaii is part of the Hawaii Clean Energy Initiative (HCEI) to transition to 30% renewable green energy penetration by 2030. In Lanai the primary loads come from two Castle and Cook Resorts, in addition to residential needs. The total peak load profile is 12470 V, 5.5 MW. Currently there are several diesel generators that meet these loading requirements. As part of the HCEI, Lanai has initially installed 1.2 MW of PV generation. The goal of this study has been to evaluate the impact of the PV with respect to the conventional carbon-based diesel generation in real time simulation. For intermittent PV distributed generation, the overall stability and transient responses are investigated. A simple Lanai 'like' model has been developed in the Matlab/Simulink environment (see Fig. 1) and to accommodate real-time simulation of the hybrid power grid system the Opal-RT Technologies RT-Lab environment is used. The diesel generators have been modelled using the SimPowerSystems toolbox swing equations and a custom Simulink module has been developed for the High level PV generation. All of the loads have been characterized primarily as distribution lines with series resistive load banks with one VAR load bank. Three-phase faults are implemented for each bus. Both conventional and advanced control architectures will be used to evaluate the integration of the PV onto the current power grid system. The baseline numerical results include the stable performance of the power grid during varying cloud cover (PV generation ramping up/down) scenarios. The importance of assessing the real-time scenario is included.

  11. Towards Real-Time High Performance Computing For Power Grid Analysis

    SciTech Connect (OSTI)

    Hui, Peter SY; Lee, Barry; Chikkagoudar, Satish

    2012-11-16

    Real-time computing has traditionally been considered largely in the context of single-processor and embedded systems, and indeed, the terms real-time computing, embedded systems, and control systems are often mentioned in closely related contexts. However, real-time computing in the context of multinode systems, specifically high-performance, cluster-computing systems, remains relatively unexplored. Imposing real-time constraints on a parallel (cluster) computing environment introduces a variety of challenges with respect to the formal verification of the system's timing properties. In this paper, we give a motivating example to demonstrate the need for such a system--- an application to estimate the electromechanical states of the power grid--- and we introduce a formal method for performing verification of certain temporal properties within a system of parallel processes. We describe our work towards a full real-time implementation of the target application--- namely, our progress towards extracting a key mathematical kernel from the application, the formal process by which we analyze the intricate timing behavior of the processes on the cluster, as well as timing measurements taken on our test cluster to demonstrate use of these concepts.

  12. Powering a Home with Just 25 Watts of Solar PV. Super-Efficient Appliances Can Enable Expanded Off-Grid Energy Service Using Small Solar Power Systems

    SciTech Connect (OSTI)

    Phadke, Amol A.; Jacobson, Arne; Park, Won Young; Lee, Ga Rick; Alstone, Peter; Khare, Amit

    2015-04-01

    Highly efficient direct current (DC) appliances have the potential to dramatically increase the affordability of off-grid solar power systems used for rural electrification in developing countries by reducing the size of the systems required. For example, the combined power requirement of a highly efficient color TV, four DC light emitting diode (LED) lamps, a mobile phone charger, and a radio is approximately 18 watts and can be supported by a small solar power system (at 27 watts peak, Wp). Price declines and efficiency advances in LED technology are already enabling rapidly increased use of small off-grid lighting systems in Africa and Asia. Similar progress is also possible for larger household-scale solar home systems that power appliances such as lights, TVs, fans, radios, and mobile phones. When super-efficient appliances are used, the total cost of solar home systems and their associated appliances can be reduced by as much as 50%. The results vary according to the appliances used with the system. These findings have critical relevance for efforts to provide modern energy services to the 1.2 billion people worldwide without access to the electrical grid and one billion more with unreliable access. However, policy and market support are needed to realize rapid adoption of super-efficient appliances.

  13. Smart Grid Investments Improve Grid Reliability, Resilience,...

    Energy Savers [EERE]

    customers, and improve overall service reliability to reduce customer losses from power disruptions. This report presents findings on smart grid improvements in outage...

  14. Towards risk-based management of critical infrastructures : enabling insights and analysis methodologies from a focused study of the bulk power grid.

    SciTech Connect (OSTI)

    Richardson, Bryan T.; LaViolette, Randall A.; Cook, Benjamin Koger

    2008-02-01

    This report summarizes research on a holistic analysis framework to assess and manage risks in complex infrastructures, with a specific focus on the bulk electric power grid (grid). A comprehensive model of the grid is described that can approximate the coupled dynamics of its physical, control, and market components. New realism is achieved in a power simulator extended to include relevant control features such as relays. The simulator was applied to understand failure mechanisms in the grid. Results suggest that the implementation of simple controls might significantly alter the distribution of cascade failures in power systems. The absence of cascade failures in our results raises questions about the underlying failure mechanisms responsible for widespread outages, and specifically whether these outages are due to a system effect or large-scale component degradation. Finally, a new agent-based market model for bilateral trades in the short-term bulk power market is presented and compared against industry observations.

  15. An economic analysis of grid-connected residential solar photovoltaic power systems

    E-Print Network [OSTI]

    Carpenter, Paul R.

    The question of the utility grid-connected residential market for photovoltaics is examined from a user-ownership perspective. The price is calculated at which the user would be economically indifferent between

  16. Tips: Smart Meters and a Smarter Power Grid | Department of Energy

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

    July 27, 2014 - 8:13pm Addthis The Smart Grid will consist of controls, computers, automation, and new technologies and equipment -- including a smart meter at your home --...

  17. Innovative Distributed Power Grid Interconnection and Control Systems: Final Report, December 11, 2000 - August 30, 2005

    SciTech Connect (OSTI)

    DePodesta, K.; Birlingmair, D.; West, R.

    2006-03-01

    The contract goal was to further advance distributed generation in the marketplace by making installations more cost-effective and compatible with existing systems. This was achieved by developing innovative grid interconnection and control systems.

  18. Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles as Resources for Distributed Electric Power in California

    E-Print Network [OSTI]

    Kempton, Willett; Tomic, Jasna; Letendre, Steven; Brooks, Alec; Lipman, Timothy

    2001-01-01

    by the California Power Exchange, Available at: http://CalPX – California Power Exchange CARB – California Airby the California Power Exchange (CalPX). The other two

  19. Algorithmic Decision Theory and the Smart Grid

    E-Print Network [OSTI]

    of uncontrollable influences such as weather #12;11 Today's Electric Power Grid ·Today's electric power systems Grid, October 2010. #12;10 Today's Electric Power Grid ·Today's electric power systems have grown up's Electric Power Grid ·Challenges include: -Huge number of customers, uncontrolled demand -Changing supply

  20. ,"Month","Year","Contiguous U.S.","Eastern Power Grid",,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA -Liquids LeaseAnnual",2014WellheadAnnual",2014Gas,3a. January

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA -Liquids LeaseAnnual",2014WellheadAnnual",2014Gas,3a.

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA -LiquidsAnnual",2014LNG Storageb. Historical Net Energy For Load,

  3. ,"Net Energy For Load (Annual)",,"Contiguous U.S. ","Eastern Power Grid",,,,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008 © OECD/IEA -LiquidsAnnual",2014LNG Storageb. Historical Net Energy For Load,7,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",2014

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",20142005 and

  6. ,"Projected Year Base","Year","Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",20142005 and4.

  7. ,"Projected Year Base","Year","Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",20142005

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",201420054.

  9. ,"Projected Year Base","Year","Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",201420054.3 and

  10. ,"Projected Year Base","Year","Summer",,,"Eastern Power Grid",,,,,,,,,,,,,,,,,,,,,,,,"Texas Power Grid",,,"Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead Price (DollarsAnnual",2014Annual",2014Annual",201420054.3

  11. ,"Summer Noncoincident Peak Load",,"Contiguous U.S. ","Eastern Power Grid",,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead PriceConsumption by EndAnnual",2014Annual",2014Totale. Historical

  12. ,"Summer Noncoincident Peak Load",,"Contiguous U.S. ","Eastern Power Grid",,,,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA - 2008Wellhead PriceConsumption by EndAnnual",2014Annual",2014Totale.

  13. ,"Winter Noncoincident Peak Load",,"Contiguous U.S. ","Eastern Power Grid",,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA -Annual",2014Proved Reserves, WetGas,ConsumptionAnnual",2014 ,"Releasef.

  14. ,"Winter Noncoincident Peak Load",,"Contiguous U.S. ","Eastern Power Grid",,,,,,,,"Texas Power Grid","Western Power Grid"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home PageMonthly","10/2015"4,"Ames City of",6,1,"Omaha Public PowerOECD/IEA -Annual",2014Proved Reserves, WetGas,ConsumptionAnnual",2014 ,"Releasef.d.

  15. Artificial Neural Network for Optimized Power System Management

    E-Print Network [OSTI]

    OLeary, Daniel Albert

    2015-01-01

    into the aging US power grid requires new technologies andtechniques. This improved power grid, the smart grid, willutility for the overall power grid, and the prosumer needs

  16. Pilot evaluation of electricity-reliability and power-quality monitoring in California's Silicon Valley with the I-Grid(R) system

    SciTech Connect (OSTI)

    Eto, Joseph; Divan, Deepak; Brumsickle, William

    2004-02-01

    Power-quality events are of increasing concern for the economy because today's equipment, particularly computers and automated manufacturing devices, is susceptible to these imperceptible voltage changes. A small variation in voltage can cause this equipment to shut down for long periods, resulting in significant business losses. Tiny variations in power quality are difficult to detect except with expensive monitoring equipment used by trained technicians, so many electricity customers are unaware of the role of power-quality events in equipment malfunctioning. This report describes the findings from a pilot study coordinated through the Silicon Valley Manufacturers Group in California to explore the capabilities of I-Grid(R), a new power-quality monitoring system. This system is designed to improve the accessibility of power-quality in formation and to increase understanding of the growing importance of electricity reliability and power quality to the economy. The study used data collected by I-Grid sensors at seven Silicon Valley firms to investigate the impacts of power quality on individual study participants as well as to explore the capabilities of the I-Grid system to detect events on the larger electricity grid by means of correlation of data from the sensors at the different sites. In addition, study participants were interviewed about the value they place on power quality, and their efforts to address electricity-reliability and power-quality problems. Issues were identified that should be taken into consideration in developing a larger, potentially nationwide, network of power-quality sensors.

  17. Efficient algorithm for locating and sizing series compensation devices in large power transmission grids: II. Solutions and applications

    SciTech Connect (OSTI)

    Frolov, Vladimir; Backhaus, Scott; Chertkov, Misha

    2014-10-01

    In a companion manuscript, we developed a novel optimization method for placement, sizing, and operation of Flexible Alternating Current Transmission System (FACTS) devices to relieve transmission network congestion. Specifically, we addressed FACTS that provide Series Compensation (SC) via modification of line inductance. In this manuscript, this heuristic algorithm and its solutions are explored on a number of test cases: a 30-bus test network and a realistically-sized model of the Polish grid (~ 2700 nodes and ~ 3300 lines). The results on the 30-bus network are used to study the general properties of the solutions including non-locality and sparsity. The Polish grid is used as a demonstration of the computational efficiency of the heuristics that leverages sequential linearization of power flow constraints and cutting plane methods that take advantage of the sparse nature of the SC placement solutions. Using these approaches, the algorithm is able to solve an instance of Polish grid in tens of seconds. We explore the utility of the algorithm by analyzing transmission networks congested by (a) uniform load growth, (b) multiple overloaded configurations, and (c) sequential generator retirements.

  18. Efficient algorithm for locating and sizing series compensation devices in large power transmission grids: II. Solutions and applications

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Frolov, Vladimir; Backhaus, Scott; Chertkov, Misha

    2014-10-01

    In a companion manuscript, we developed a novel optimization method for placement, sizing, and operation of Flexible Alternating Current Transmission System (FACTS) devices to relieve transmission network congestion. Specifically, we addressed FACTS that provide Series Compensation (SC) via modification of line inductance. In this manuscript, this heuristic algorithm and its solutions are explored on a number of test cases: a 30-bus test network and a realistically-sized model of the Polish grid (~ 2700 nodes and ~ 3300 lines). The results on the 30-bus network are used to study the general properties of the solutions including non-locality and sparsity. The Polishmore »grid is used as a demonstration of the computational efficiency of the heuristics that leverages sequential linearization of power flow constraints and cutting plane methods that take advantage of the sparse nature of the SC placement solutions. Using these approaches, the algorithm is able to solve an instance of Polish grid in tens of seconds. We explore the utility of the algorithm by analyzing transmission networks congested by (a) uniform load growth, (b) multiple overloaded configurations, and (c) sequential generator retirements.« less

  19. Copyright 2013 IEEE. Power Grid Sensitivity Analysis of Geomagnetically Induced Currents

    E-Print Network [OSTI]

    to the electric fields on nearby transmission lines, implying localized electric field models may be appropriate electric transmission grid. In the high voltage transformers the quasi-dc GICs produce an offset with GICs in the bulk electric system. The first is the potential for damage to transmission system assets

  20. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (TO APPEAR) 1 Robust Smart-Grid Powered

    E-Print Network [OSTI]

    Giannakis, Georgios

    , Fellow, IEEE, and Shuyan Hu Abstract--A framework is introduced to integrate renewable energy sources to minimize the worst-case energy cost subject to the worst- case user QoS guarantees for the CoMP downlink Terms--Smart grid, renewable energy, downlink beam- forming, CoMP systems, robust optimization

  1. Distributed Demand-Side Management in Smart Grid: how Imitation improves Power Scheduling

    E-Print Network [OSTI]

    proportional to the cost difference between the actual and cheapest schedules of the previous iteration. We. Similarly, DSM systems can also be employed to mitigate other issues related to electric grids in the literature, aiming at controlling the electric loads of groups of collaborative customers [3], [4]. However

  2. Assessing the impact of space weather on the electric power grid based on insurance claims for industrial electrical equipment

    E-Print Network [OSTI]

    Schrijver, Carolus J; Murtagh, William; Petrinec, Stephen M

    2014-01-01

    Geomagnetically induced currents are known to induce disturbances in the electric power grid. Here, we perform a statistical analysis of 11,242 insurance claims from 2000 through 2010 for equipment losses and related business interruptions in North-American commercial organizations that are associated with damage to, or malfunction of, electrical and electronic equipment. We find that claims rates are elevated on days with elevated geomagnetic activity by approximately 20% for the top 5%, and by about 10% for the top third of most active days ranked by daily maximum variability of the geomagnetic field. When focusing on the claims explicitly attributed to electrical surges (amounting to more than half the total sample), we find that the dependence of claims rates on geomagnetic activity mirrors that of major disturbances in the U.S. high-voltage electric power grid. The claims statistics thus reveal that large-scale geomagnetic variability couples into the low-voltage power distribution network and that relat...

  3. Vehicle-to-Grid Power: Battery, Hybrid, and Fuel Cell Vehicles as Resources for Distributed Electric Power in California

    E-Print Network [OSTI]

    Kempton, Willett; Tomic, Jasna; Letendre, Steven; Brooks, Alec; Lipman, Timothy

    2001-01-01

    at the power plant as the figure suggests; in California, itplants running at full power, or about 4% of current Californiastationary power plants is 0.75 TW e . In California, under

  4. Smart Grid | Department of Energy

    Office of Environmental Management (EM)

    Electric Power Smart Grid Smart Grid Rows of battery racks at the Salem Smart Power Center in Salem, Oregon. The Battelle-led Pacific Northwest Smart...

  5. A Discussion Paper circulated by Brunel Institute of Power Systems 15/09/03 Prospects for Grid-Computing in Future Power Networks

    E-Print Network [OSTI]

    Taylor, Gary

    -operate) in providing reliable, cheap and sustainable electrical energy supply. 2.1 The nature of Grid-computing Grid be as readily available as electrical energy by simply `plugging in to a Grid'. This short article is intended. Grid-Computing Grid-computing has a good pedigree. It is championed by the same people that brought us

  6. Sandia Energy - Solar Energy Grid Integration Systems (SEGIS...

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

    Solar Energy Grid Integration Systems (SEGIS) Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics Grid Integration Solar Energy Grid Integration Systems...

  7. Cyber Security & Smart Grid 

    E-Print Network [OSTI]

    Shapiro, J.

    2011-01-01

    and interoperability ESL-KT-11-11-23 CATEE 2011, Dallas, Texas, Nov. 7 ? 9, 2011 Cyber Vulnerabilities In The Legacy Power Grid ? SCADA Security ? Supervisory Control and Data Acquisition (SCADA) systems are used extensively to control and monitor the national... & Smart Grid Jonathan Shapiro Texas Institute The Clean Air Through Energy Efficiency (CATEE) Conference Cyber Security & Smart Grid ESL-KT-11-11-23 CATEE 2011, Dallas, Texas, Nov. 7 ? 9, 2011 Cyber Security and The Smart Grid Networks...

  8. Green Energy Workshop Student Posters Semantic Complex Event Processing for Smart Grid Information

    E-Print Network [OSTI]

    Hwang, Kai

    for Smart Grid Information Integration and Demand Management Qunzhi Zhou, Yogesh of the power grid to a Smart Grid. The benefits of Smart Grid include demand Grid Demonstration Project. We define an ontology model for Smart Grid

  9. Key Challenges in the North American Power Grid | GE Global Research

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

    A Journey Inside the Complex and Powerful World of Industrial Circuit Breakers Bringing Technology to Life Photovoltaic Power Generation in Flagstaff Subscribe to Future Posts...

  10. Text of article published in IEEE Smart Grid, March 2012. http://smartgrid.ieee.org/march-2012/527-microgrids-an-emerging-technology-to-enhance-power-system-

    E-Print Network [OSTI]

    Text of article published in IEEE Smart Grid, March 2012. http://smartgrid.ieee.org/march-2012/527-microgrids-an-emerging-technology-to-enhance-power-system- reliability Title: Microgrids: An emerging solution to combat reduced power reliability Authors: Siddharth Suryanarayanan, Elias Kyriakides

  11. High-Power Zinc-Air Energy Storage: Enhanced Metal-Air Energy Storage System with Advanced Grid-Interoperable Power Electronics Enabling Scalability and Ultra-Low Cost

    SciTech Connect (OSTI)

    2010-10-01

    GRIDS Project: Fluidic is developing a low-cost, rechargeable, high-power module for Zinc-air batteries that will be used to store renewable energy. Zinc-air batteries are traditionally found in small, non-rechargeable devices like hearing aids because they are well-suited to delivering low levels of power for long periods of time. Historically, Zinc-air batteries have not been as useful for applications which require periodic bursts of power, like on the electrical grid. Fluidic hopes to fill this need by combining the high energy, low cost, and long run-time of a Zinc-air battery with new chemistry providing high power, high efficiency, and fast response. The battery module could allow large grid-storage batteries to provide much more power on very short demand—the most costly kind of power for utilities—and with much more versatile performance.

  12. A simple mathematical description of an off-grid hybrid solarwind power generating system This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Blasone, Massimo

    A simple mathematical description of an off-grid hybrid solar­wind power generating system­771 doi:10.1088/0143-0807/34/3/763 A simple mathematical description of an off-grid hybrid solar energy from the PV cells to the storage unit. In this paper we consider the energy flow in the off-grid

  13. Future Grid: The Environment Future Grid Initiative White Paper

    E-Print Network [OSTI]

    Future Grid: The Environment Future Grid Initiative White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Future Grid: The Environment Prepared for the Project "The Future Grid to Enable Sustainable Energy Systems" Funded by the U

  14. Applications for Coal and Natural Gas Power Plants in a Smart Grid Future

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O D SFederal FacilityApplicant IApplicationSC14Smart Grid

  15. Application of smart grid in photovoltaic power systems, ForskEL (Smart

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex A S Jump to:Angola onAperionCommissionEnergyROW |andGrid

  16. Principal Characteristics of a Modern Grid

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

    does not address the 21 st century power supply challenges The benefits of a modernized grid are substantial Running today's digital society through yesterday's grid is like...

  17. Impact Assessment of Plug-in Hybrid Vehicles on the U.S. Power Grid

    SciTech Connect (OSTI)

    Kintner-Meyer, Michael CW; Nguyen, Tony B.; Jin, Chunlian; Balducci, Patrick J.; Secrest, Thomas J.

    2010-09-30

    The US electricity grid is a national infrastructure that has the potential to deliver significant amounts of the daily driving energy of the US light duty vehicle (cars, pickups, SUVs, and vans) fleet. This paper discusses a 2030 scenario with 37 million plug-in hybrid electric vehicles (PHEVs) on the road in the US demanding electricity for an average daily driving distance of about 33 miles (53 km). The paper addresses the potential grid impacts of the PHEVs fleet relative to their effects on the production cost of electricity, and the emissions from the electricity sector. The results of this analysis indicate significant regional difference on the cost impacts and the CO2 emissions. Battery charging during the day may have twice the cost impacts than charging during the night. The CO2 emissions impacts are very region-dependent. In predominantly coal regions (Midwest), the new PHEV load may reduce the CO2 emission intensity (ton/MWh), while in others regions with significant clean generation (hydro and renewable energy) the CO2 emission intensity may increase. Discussed will the potential impact of the results with the valuation of carbon emissions.

  18. International Journal of Smart Grid and Clean Energy Smart Grid Security: Threats, Vulnerabilities and Solutions

    E-Print Network [OSTI]

    Aloul, Fadi

    International Journal of Smart Grid and Clean Energy Smart Grid Security: Threats, Vulnerabilities is currently evolving into the smart grid. Smart grid integrates the traditional electrical power grid, controlling and managing the demands of customers. A smart grid is a huge complex network composed of millions

  19. Efficient algorithm for locating and sizing series compensation devices in large power transmission grids: I. Model implementation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Frolov, Vladimir; Backhaus, Scott; Chertkov, Misha

    2014-10-24

    We explore optimization methods for planning the placement, sizing and operations of Flexible Alternating Current Transmission System (FACTS) devices installed to relieve transmission grid congestion. We limit our selection of FACTS devices to Series Compensation (SC) devices that can be represented by modification of the inductance of transmission lines. Our master optimization problem minimizes the l1 norm of the inductance modification subject to the usual line thermal-limit constraints. We develop heuristics that reduce this non-convex optimization to a succession of Linear Programs (LP) which are accelerated further using cutting plane methods. The algorithm solves an instance of the MatPower Polishmore »Grid model (3299 lines and 2746 nodes) in 40 seconds per iteration on a standard laptop—a speed up that allows the sizing and placement of a family of SC devices to correct a large set of anticipated congestions. We observe that our algorithm finds feasible solutions that are always sparse, i.e., SC devices are placed on only a few lines. In a companion manuscript, we demonstrate our approach on realistically-sized networks that suffer congestion from a range of causes including generator retirement. In this manuscript, we focus on the development of our approach, investigate its structure on a small test system subject to congestion from uniform load growth, and demonstrate computational efficiency on a realistically-sized network.« less

  20. Improving the Power Grid with Superconducting Technology New superconducting technology will help America reduce the demand for additional electric power

    E-Print Network [OSTI]

    Pennycook, Steve

    will help America reduce the demand for additional electric power generation and increased delivery because they have virtually no resistance to electric current, offering the possibility of new electric@ornl.gov #12;Working with Industry to Develop Electric Power Applications Superconducting technologies

  1. GRIDS: Grid-Scale Rampable Intermittent Dispatchable Storage

    SciTech Connect (OSTI)

    2010-09-01

    GRIDS Project: The 12 projects that comprise ARPA-E’s GRIDS Project, short for “Grid-Scale Rampable Intermittent Dispatchable Storage,” are developing storage technologies that can store renewable energy for use at any location on the grid at an investment cost less than $100 per kilowatt hour. Flexible, large-scale storage would create a stronger and more robust electric grid by enabling renewables to contribute to reliable power generation.

  2. Efficient Switches for Solar Power Conversion: Four Quadrant GaN Switch Enabled Three Phase Grid-Tied Microinverters

    SciTech Connect (OSTI)

    2012-02-13

    Solar ADEPT Project: Transphorm is developing power switches for new types of inverters that improve the efficiency and reliability of converting energy from solar panels into useable electricity for the grid. Transistors act as fast switches and control the electrical energy that flows in an electrical circuit. Turning a transistor off opens the circuit and stops the flow of electrical current; turning it on closes the circuit and allows electrical current to flow. In this way a transistor can be used to convert DC from a solar panel into AC for use in a home. Transphorm’s transistors will enable a single semiconductor device to switch electrical currents at high-voltage in both directions—making the inverter more compact and reliable. Transphorm is using Gallium Nitride (GaN) as a semiconductor material in its transistors instead of silicon, which is used in most conventional transistors, because GaN transistors have lower losses at higher voltages and switching frequencies.

  3. Predictability of PV power grid performance on insular sites without weather stations: use of artificial neural networks

    E-Print Network [OSTI]

    Voyant, Cyril; Paoli, Christophe; Nivet, Marie Laure; Poggi, Philippe

    2009-01-01

    The official meteorological network is poor on the island of Corsica: only three sites being about 50 km apart are equipped with pyranometers which enable measurements by hourly and daily step. These sites are Ajaccio (seaside), Bastia (seaside) and Corte (average altitude of 486 meters). This lack of weather station makes difficult the predictability of PV power grid performance. This work intends to study a methodology which can predict global solar irradiation using data available from another location for daily and hourly horizon. In order to achieve this prediction, we have used Artificial Neural Network which is a popular artificial intelligence technique in the forecasting domain. A simulator has been obtained using data available for the station of Ajaccio that is the only station for which we have a lot of data: 16 years from 1972 to 1987. Then we have tested the efficiency of this simulator in two places with different geographical features: Corte, a mountainous region and Bastia, a coastal region. ...

  4. Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

    SciTech Connect (OSTI)

    Diana K. Grauer; Michael E. Reed

    2011-11-01

    This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

  5. Computational Needs for the Next Generation Electric Grid Proceedings

    E-Print Network [OSTI]

    Birman, Kenneth

    2012-01-01

    stability prediction for power grids”, 2011.    [47]  D.  ?Multigrid on GPU: tackling power grid analysis on parallel control of the electric power grid,”  Technical Report EECS?

  6. AUSTRIAN GRID AUSTRIAN GRID

    E-Print Network [OSTI]

    Author 1.0 2005-07-28 Initial Version See cover on page 3 #12;AUSTRIAN GRID 3/18 A PROTOTYPE OF THE SEE

  7. Now Available: Smart Grid Investments Improve Grid Reliability...

    Office of Environmental Management (EM)

    D.C., May 8, 2013. | Official White House Photo by Pete Souza. Smart Grid Week: Hurricane Season and the Department's Efforts to Make the Grid More Resilient to Power Outages...

  8. Utility-Scale Solar Power Converter: Agile Direct Grid Connect Medium Voltage 4.7-13.8 kV Power Converter for PV Applications Utilizing Wide Band Gap Devices

    SciTech Connect (OSTI)

    2012-01-25

    Solar ADEPT Project: Satcon is developing a compact, lightweight power conversion device that is capable of taking utility-scale solar power and outputting it directly into the electric utility grid at distribution voltage levels—eliminating the need for large transformers. Transformers “step up” the voltage of the power that is generated by a solar power system so it can be efficiently transported through transmission lines and eventually “stepped down” to usable voltages before it enters homes and businesses. Power companies step up the voltage because less electricity is lost along transmission lines when the voltage is high and current is low. Satcon’s new power conversion devices will eliminate these heavy transformers and connect a utility-scale solar power system directly to the grid. Satcon’s modular devices are designed to ensure reliability—if one device fails it can be bypassed and the system can continue to run.

  9. Impacts of Improved Day-Ahead Wind Forecasts on Power Grid Operations: September 2011

    SciTech Connect (OSTI)

    Piwko, R.; Jordan, G.

    2011-11-01

    This study analyzed the potential benefits of improving the accuracy (reducing the error) of day-ahead wind forecasts on power system operations, assuming that wind forecasts were used for day ahead security constrained unit commitment.

  10. Correlated Failures of Power Systems: The Analysis of the Nordic Grid

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    transmission system, such as the energy management system (EMS), are controlled by SCADA systems. SCADA systems]. These security flaws are inherited by any system which deploys SCADA, in particular power transmission systems

  11. Increasing the Resolution of Wide-Area Situational Awareness of the Power Grid through Event Unmixing

    E-Print Network [OSTI]

    Tolbert, Leon M.

    signal measurements. Since a Virginia Tech research team developed the first prototype PMU in 1988, PMUs of power system. As a member of the PMU family, the Frequency Distur- bance Recorder (FDR) was developed

  12. RTDS-Based Design and Simulation of Distributed P-Q Power Resources in Smart Grid

    E-Print Network [OSTI]

    Taylor, Zachariah David

    2014-01-01

    and N. Gulhar, “Taking demand response to the next level,”Xu, “An Event-Driven Demand Response Scheme for Power SystemDemand side management: Demand response, intelligent energy

  13. Control strategies for 2-quadrant converter used in grid power flow control

    E-Print Network [OSTI]

    Maestri, Sebastian; Uicich, Gustavo; Benedetti, Mario; Papastergiou, Konstantinos; Le Godec, Gilles

    2015-01-01

    This work presents the analysis of a two-quadrant regulator connected to the DC-link of a 4-quadrant magnet supply. The key objective is to present some regulation strategies for controlling the peak power required from the power network as well as to recover the magnet energy into capacitor banks. A comparative study that highlights the trade off between the size of reactive elements, and the peak current drawn from the electrical network is presented.

  14. Cyber-Physical Systems Security for Smart Grid

    E-Print Network [OSTI]

    Cyber-Physical Systems Security for Smart Grid Future Grid Initiative White Paper Power Systems-Physical Systems Security for Smart Grid Prepared for the Project "The Future Grid to Enable Sustainable Energy

  15. Investigation of a family of power conditioners integrated into the utility grid: Category 1. Residential power conditioner. Final report

    SciTech Connect (OSTI)

    Steigerwald, R.L.; Ferraro, A.; Tompkins, R.E.

    1981-07-01

    The development of power conditioners for residential photovoltaic applications of approximately 5 to 30 kW is reported. The interface of the inverter and the solar array, as well as the ac utility is investigated including the effects of array input current, utility impedance, and injected harmonic currents. The trade-off study of alternate power conversion schemes are covered which results in a recommended approach. A conceptual design of the recommended approach, including performance results obtained from an inverter simulated is presented. (LEW)

  16. Study of Power Converter Topologies with Energy Recovery and grid power flow control Part B: boost converter with energy storage

    E-Print Network [OSTI]

    Rogelio, Garcia Retegui; Gustavo, Uicich; Mario, Benedetti; Gilles, Le Godec; Konstantinos, Papastergiou

    2015-01-01

    In the framework of a Transfer line (TT2) Consolidation Programme, a number of studies on Energy cycling have been commissioned. Part of this work involves the study of dierent power electronic system topologies for magnet energy recovery. In this report, the use of a boost front-end converter supplying DC link of a 4-quadrant magnet supply is analysed. The key objective of the study is to find control strategies that result in the control of the peak power required from the power network as well as to recover the magnet energy into capacitor banks with controlled voltage fluctuation. The study comprises the modelling of the system by means of the method of state averaging and the development of regulation strategies to energy management. The proposed control strategies can be divided in two groups: in the first group, the magnet current is used to define the reference for the control system, while in the second group this current is unknown and some strategies are devised to limit the power drawn from the el...

  17. Cascading Power Outages Propagate Locally in an Influence Graph that is not the Actual Grid Topology

    E-Print Network [OSTI]

    Hines, Paul D H; Rezaei, Pooya

    2015-01-01

    In a cascading power transmission outage, component outages propagate non-locally; after one component outages, the next failure may be very distant, both topologically and geographically. As a result, simple models of topological contagion do not accurately represent the propagation of cascades in power systems. However, cascading power outages do follow patterns, some of which are useful in understanding and reducing blackout risk. This paper describes a method by which the data from many cascading failure simulations can be transformed into a graph-based model of influences that provides actionable information about the many ways that cascades propagate in a particular system. The resulting "influence graph" model is Markovian, since component outage probabilities depend only on the outages that occurred in the prior generation. To validate the model we compare the distribution of cascade sizes resulting from n-2 contingencies in a 2896 branch test case to cascade sizes in the influence graph. The two dist...

  18. Effect on the condition of the metal in A K-300-3.5 turbine owing to multicycle fatigue from participation of a power generating unit in grid frequency and power regulation

    SciTech Connect (OSTI)

    Lebedeva, A. I.; Zorchenko, N. V.; Prudnikov, A. A.

    2011-09-15

    The effect on the condition of the rotor material owing to multicycle fatigue caused by variable stresses during participation of a power generating unit in grid frequency and power regulation is evaluated using the K-300-23.5 steam turbine as an example. It is shown that during normalized primary frequency regulation the safety factor is at least 50, while during automatic secondary regulation of frequency and power there is essentially no damage to the metal.

  19. 1st International Workshop on High Performance Computing, Networking and Analytics for the Power Grid

    E-Print Network [OSTI]

    1st International Workshop on High Performance Computing, Networking and Analytics for the Power Transient Stability" #12;1st International Workshop on High Performance Computing, Networking and Analytics (University of Vermont). "Developing a Dynamic Model of Cascading Failure for High Performance Computing using

  20. Optimal Two-Tier Forecasting Power Generation Model in Smart Grids

    E-Print Network [OSTI]

    Iyengar, S. S.

    resources mostly use fos- sil fuel as their energy source which is a ma- jor environmental concern. Additionally, DRR utilization helps power system to become dis- persed. Therefore, not only SG is more dis Processing, 8(4), 79-88, 2014 ISSN : 0973-8215 IK International Publishing House Pvt. Ltd., New Delhi, India

  1. Green power grids: how energy from renewable sources affects network and markets

    E-Print Network [OSTI]

    Mureddu, Mario; Chessa, Alessandro; Scala, Antonio; Damiano, Alfonso

    2015-01-01

    The increasing attention to environmental issues is forcing the implementation of novel energy models based on renewable sources, fundamentally changing the configuration of energy management and introducing new criticalities that are only partly understood. In particular, renewable energies introduce fluctuations causing an increased request of conventional energy sources oriented to balance energy requests on short notices. In order to develop an effective usage of low-carbon sources, such fluctuations must be understood and tamed. In this paper we present a microscopic model for the description and the forecast of short time fluctuations related to renewable sources and to their effects on the electricity market. To account for the inter-dependencies among the energy market and the physical power dispatch network, we use a statistical mechanics approach to sample stochastic perturbations on the power system and an agent based approach for the prediction of the market players behavior. Our model is a data-d...

  2. Capturing Dynamics in the Power Grid: Formulation of Dynamic State Estimation through Data Assimilation

    SciTech Connect (OSTI)

    Zhou, Ning; Huang, Zhenyu; Meng, Da; Elbert, Stephen T.; Wang, Shaobu; Diao, Ruisheng

    2014-03-31

    With the increasing complexity resulting from uncertainties and stochastic variations introduced by intermittent renewable energy sources, responsive loads, mobile consumption of plug-in vehicles, and new market designs, more and more dynamic behaviors are observed in everyday power system operation. To operate a power system efficiently and reliably, it is critical to adopt a dynamic paradigm so that effective control actions can be taken in time. The dynamic paradigm needs to include three fundamental components: dynamic state estimation; look-ahead dynamic simulation; and dynamic contingency analysis (Figure 1). These three components answer three basic questions: where the system is; where the system is going; and how secure the system is against accidents. The dynamic state estimation provides a solid cornerstone to support the other 2 components and is the focus of this study.

  3. PowerGrid - A Computation Engine for Large-Scale Electric Networks

    SciTech Connect (OSTI)

    Chika Nwankpa

    2011-01-31

    This Final Report discusses work on an approach for analog emulation of large scale power systems using Analog Behavioral Models (ABMs) and analog devices in PSpice design environment. ABMs are models based on sets of mathematical equations or transfer functions describing the behavior of a circuit element or an analog building block. The ABM concept provides an efficient strategy for feasibility analysis, quick insight of developing top-down design methodology of large systems and model verification prior to full structural design and implementation. Analog emulation in this report uses an electric circuit equivalent of mathematical equations and scaled relationships that describe the states and behavior of a real power system to create its solution trajectory. The speed of analog solutions is as quick as the responses of the circuit itself. Emulation therefore is the representation of desired physical characteristics of a real life object using an electric circuit equivalent. The circuit equivalent has within it, the model of a real system as well as the method of solution. This report presents a methodology of the core computation through development of ABMs for generators, transmission lines and loads. Results of ABMs used for the case of 3, 6, and 14 bus power systems are presented and compared with industrial grade numerical simulators for validation.

  4. Investigation of a family of power conditioners integrated into a utility grid: final report Category I

    SciTech Connect (OSTI)

    Wood, P.; Putkovich, R.P.

    1981-07-01

    A study was conducted of the requirements for and technologies applicable to power conditioning equipment in residential solar photovoltaic systems. A survey of companies known or thought to manufacture power conditioning equipment was conducted to asses the technology. Technical issues regarding ac and dc interface requirements were studied. A baseline design was selected to be a good example of existing technology which would not need significant development effort for its implementation. Alternative technologies are evaluated to determine which meet the baseline specification, and their costs and losses are evaluated. Areas in which cost improvements can be obtained are studied, and the three best candidate technologies--the current-sourced converter, the HF front end converter, and the programmed wave converter--are compared. It is concluded that the designs investigated will meet, or with slight improvement could meet, short term efficiency goals. Long term efficiency goals could be met if an isolation transformer were not required in the power conditioning equipment. None of the technologies studied can meet cost goals unless further improvements are possible. (LEW)

  5. The interconnection of photovoltaic power systems with the utility grid: An overview for utility engineers

    SciTech Connect (OSTI)

    Wills, R.H.

    1994-06-01

    Utility-interactive (UI) photovoltaic power systems mounted on residences and commercial buildings are likely to become a small, but important source of electric generation in the next century. This is a new concept in utility power production--a change from large-scale central generation to small-scale dispersed generation. As such, it requires a re-examination of many existing standards and practices to enable the technology to develop and emerge into the marketplace. Much work has been done over the last 20 years to identify and solve the potential problems associated with dispersed power generation systems. This report gives an overview of these issues and also provides a guide to applicable codes, standards and other related documents. The main conclusion that can be drawn from this work is that there are no major technical barriers to the implementation of dispersed PV generating systems. While more technical research is needed in some specific areas, the remaining barriers are fundamentally price and policy.

  6. Wind Energy Management System EMS Integration Project: Incorporating Wind Generation and Load Forecast Uncertainties into Power Grid Operations

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Huang, Zhenyu; Etingov, Pavel V.; Ma, Jian; Guttromson, Ross T.; Subbarao, Krishnappa; Chakrabarti, Bhujanga B.

    2010-01-01

    The power system balancing process, which includes the scheduling, real time dispatch (load following) and regulation processes, is traditionally based on deterministic models. Since the conventional generation needs time to be committed and dispatched to a desired megawatt level, the scheduling and load following processes use load and wind and solar power production forecasts to achieve future balance between the conventional generation and energy storage on the one side, and system load, intermittent resources (such as wind and solar generation), and scheduled interchange on the other side. Although in real life the forecasting procedures imply some uncertainty around the load and wind/solar forecasts (caused by forecast errors), only their mean values are actually used in the generation dispatch and commitment procedures. Since the actual load and intermittent generation can deviate from their forecasts, it becomes increasingly unclear (especially, with the increasing penetration of renewable resources) whether the system would be actually able to meet the conventional generation requirements within the look-ahead horizon, what the additional balancing efforts would be needed as we get closer to the real time, and what additional costs would be incurred by those needs. To improve the system control performance characteristics, maintain system reliability, and minimize expenses related to the system balancing functions, it becomes necessary to incorporate the predicted uncertainty ranges into the scheduling, load following, and, in some extent, into the regulation processes. It is also important to address the uncertainty problem comprehensively by including all sources of uncertainty (load, intermittent generation, generators’ forced outages, etc.) into consideration. All aspects of uncertainty such as the imbalance size (which is the same as capacity needed to mitigate the imbalance) and generation ramping requirement must be taken into account. The latter unique features make this work a significant step forward toward the objective of incorporating of wind, solar, load, and other uncertainties into power system operations. Currently, uncertainties associated with wind and load forecasts, as well as uncertainties associated with random generator outages and unexpected disconnection of supply lines, are not taken into account in power grid operation. Thus, operators have little means to weigh the likelihood and magnitude of upcoming events of power imbalance. In this project, funded by the U.S. Department of Energy (DOE), a framework has been developed for incorporating uncertainties associated with wind and load forecast errors, unpredicted ramps, and forced generation disconnections into the energy management system (EMS) as well as generation dispatch and commitment applications. A new approach to evaluate the uncertainty ranges for the required generation performance envelope including balancing capacity, ramping capability, and ramp duration has been proposed. The approach includes three stages: forecast and actual data acquisition, statistical analysis of retrospective information, and prediction of future grid balancing requirements for specified time horizons and confidence levels. Assessment of the capacity and ramping requirements is performed using a specially developed probabilistic algorithm based on a histogram analysis, incorporating all sources of uncertainties of both continuous (wind and load forecast errors) and discrete (forced generator outages and start-up failures) nature. A new method called the “flying brick” technique has been developed to evaluate the look-ahead required generation performance envelope for the worst case scenario within a user-specified confidence level. A self-validation algorithm has been developed to validate the accuracy of the confidence intervals.

  7. Microsoft PowerPoint - MACRUC Smart Grid School_rev 2A_NETL.pptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on darkMicroorganismsnow widely usingOverview ofWeSchool MACRUC 15 th

  8. New Battery Design Could Help Solar and Wind Power the Grid | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolar Photovoltaic(MillionNatureThousand Cubic Feet) Sold3 NewEnergy

  9. Case Study - Minnesota Power - Accelerating Grid Modernization in Minnesota - November 2012.pdf

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a lCarib Energy (USA)civilEnergy Water HeatersSmartMinnesota Power

  10. Urban Electric Power Takes Energy Storage from Startup to Grid-Scale |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With WIPPfinalUnexpectedofWyko NT33004.Department of Energy Urban

  11. INL and NREL Demonstrate Power Grid Simulation at a Distance - News

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHighHussein KhalilResearch8 IEEEINL Equipment to AidReleases |

  12. Tips: Smart Meters and a Smarter Power Grid | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report1538-1950 Timeline of Events:Smart Meters and a Smarter Power

  13. Microsoft PowerPoint - 02.11.2010_Smart Grid Conference.pptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on darkMicroorganisms to Speed Production of Biofuels9STM,

  14. Export of reactive nitrogen from coal-fired power plants in the U.S.: Estimates from a plume-in-grid modeling study - article no. D04308

    SciTech Connect (OSTI)

    Vijayaraghavan, K.; Zhang, Y.; Seigneur, C.; Karamchandani, P.; Snell, H.E.

    2009-02-15

    The export of reactive nitrogen (nitrogen oxides and their oxidation products, collectively referred to as NOy) from coal-fired power plants in the U.S. to the rest of the world could have a significant global contribution to ozone. Traditional Eulerian gridded air quality models cannot characterize accurately the chemistry and transport of plumes from elevated point sources such as power plant stacks. A state-of-the-science plume-in-grid (PinG) air quality model, a reactive plume model embedded in an Eulerian gridded model, is used to estimate the export of NOy from 25 large coal-fired power plants in the U. S. (in terms of NOx and SO{sub 2} emissions) in July 2001 to the global atmosphere. The PinG model used is the Community Multiscale Air Quality Model with Advanced Plume Treatment (CMAQ-APT). A benchmark simulation with only the gridded model, CMAQ, is also conducted for comparison purposes. The simulations with and without advanced plume treatment show differences in the calculated export of NOy from the 25 plants considered reflecting the effect of using a detailed and explicit treatment of plume transport and chemistry. The advanced plume treatment results in 31% greater simulated export of NOy compared to the purely grid-based modeling approach. The export efficiency of NOy (the fraction of NOy emitted that is exported) is predicted to be 21% without APT and 27% with APT. When considering only export through the eastern boundary across the Atlantic, CMAQ-APT predicts that the export efficiency is 24% and that 2% of NOy is exported as NOx, 49% as inorganic nitrate, and 25% as PAN. These results are in reasonably good agreement with an analysis reported in the literature of aircraft measurements over the North Atlantic.

  15. Optimization and Analysis of High-Power Hydrogen/Bromine-Flow Batteries for Grid-Scale Energy Storage

    SciTech Connect (OSTI)

    Cho, KT; Albertus, P; Battaglia, V; Kojic, A; Srinivasan, V; Weber, AZ

    2013-10-07

    For storage of grid-scale electrical energy, redox-flow batteries (RFBs) are considered promising technologies. This paper explores the influence of electrolyte composition and ion transport on cell performance by using an integrated approach of experiments and cost modeling. In particular, the impact of the area-specific resistance on system capability is elucidated for the hydrogen/bromine RFB. The experimental data demonstrate very good performance with 1.46 W cm(-2) peak power and 4 A cm(-2) limiting current density at ambient conditions for an optimal cell design and reactant concentrations. The data and cost model results show that higher concentrations of RFB reactants do not necessarily result in lower capital cost as there is a tradeoff between cell performance and storage (tank) requirements. In addition, the discharge time and overall efficiency demonstrate nonlinear effects on system cost, with a 3 to 4 hour minimum discharge time showing a key transition to a plateau in terms of cost for typical RFB systems. The presented results are applicable to many different RFB chemistries and technologies and highlight the importance of ohmic effects and associated area-specific resistance on RFB viability.

  16. Predictability of PV power grid performance on insular sites without weather stations: use of artificial neural networks

    E-Print Network [OSTI]

    Voyant, Cyril; Paoli, Christophe; Nivet, Marie Laure; Poggi, Philippe; Haurant, P; 10.4229/24thEUPVSEC2009-5BV.2.35

    2010-01-01

    The official meteorological network is poor on the island of Corsica: only three sites being about 50 km apart are equipped with pyranometers which enable measurements by hourly and daily step. These sites are Ajaccio (41\\degree 55'N and 8\\degree 48'E, seaside), Bastia (42\\degree 33'N, 9\\degree 29'E, seaside) and Corte (42\\degree 30'N, 9\\degree 15'E average altitude of 486 meters). This lack of weather station makes difficult the predictability of PV power grid performance. This work intends to study a methodology which can predict global solar irradiation using data available from another location for daily and hourly horizon. In order to achieve this prediction, we have used Artificial Neural Network which is a popular artificial intelligence technique in the forecasting domain. A simulator has been obtained using data available for the station of Ajaccio that is the only station for which we have a lot of data: 16 years from 1972 to 1987. Then we have tested the efficiency of this simulator in two places w...

  17. New York Completes Smart Grid Project to Build a More Reliable...

    Energy Savers [EERE]

    New York Completes Smart Grid Project to Build a More Reliable, Resilient Power Grid New York Completes Smart Grid Project to Build a More Reliable, Resilient Power Grid April 15,...

  18. Proposal to negotiate two blanket purchase contracts, without competitive tendering, for the supply of high-power RF grid-tubes for the CERN accelerators

    E-Print Network [OSTI]

    2005-01-01

    This document concerns the award of two contracts, without competitive tendering, for the supply of different types of RF high-power grid-tubes (triodes and tetrodes) for the operation of CERN accelerators. For the reasons set out in this document, the Finance Committee is invited to agree to the negotiation of two blanket purchase contracts, without competitive tendering, for the supply of different types of RF high-power grid-tubes (triodes and tetrodes) with: - THALES (FR) for a total amount of 6 800 000 euros (10 540 000 Swiss francs) for a period of five years, subject to revision for inflation from January 2006; - RICHARDSON (DE) for a total amount of 1 100 000 euros (1 705 000 Swiss francs) for a period of five years, subject to revision for inflation from January 2006.

  19. A Fast Gridded Method for the Estimation of the Power Spectrum of the CMB from Interferometer Data with Application to the Cosmic Background Imager

    E-Print Network [OSTI]

    S. T. Myers; C. R. Contaldi; J. R. Bond; U. -L. Pen; D. Pogosyan; S. Prunet; J. L. Sievers; B. S. Mason; T. J. Pearson; A. C. S. Readhead; M. C. Shepherd

    2002-05-23

    We describe an algorithm for the extraction of the angular power spectrum of an intensity field, such as the cosmic microwave background (CMB), from interferometer data. This new method, based on the gridding of interferometer visibilities in the aperture plane followed by a maximum likelihood solution for bandpowers, is much faster than direct likelihood analysis of the visibilities, and deals with foreground radio sources, multiple pointings, and differencing. The gridded aperture-plane estimators are also used to construct Wiener-filtered images using the signal and noise covariance matrices used in the likelihood analysis. Results are shown for simulated data. The method has been used to determine the power spectrum of the cosmic microwave background from observations with the Cosmic Background Imager, and the results are given in companion papers.

  20. Final report for %22High performance computing for advanced national electric power grid modeling and integration of solar generation resources%22, LDRD Project No. 149016.

    SciTech Connect (OSTI)

    Reno, Matthew J.; Riehm, Andrew Charles; Hoekstra, Robert John; Munoz-Ramirez, Karina; Stamp, Jason Edwin; Phillips, Laurence R.; Adams, Brian M.; Russo, Thomas V.; Oldfield, Ron A.; McLendon, William Clarence, III; Nelson, Jeffrey Scott; Hansen, Clifford W.; Richardson, Bryan T.; Stein, Joshua S.; Schoenwald, David Alan; Wolfenbarger, Paul R.

    2011-02-01

    Design and operation of the electric power grid (EPG) relies heavily on computational models. High-fidelity, full-order models are used to study transient phenomena on only a small part of the network. Reduced-order dynamic and power flow models are used when analysis involving thousands of nodes are required due to the computational demands when simulating large numbers of nodes. The level of complexity of the future EPG will dramatically increase due to large-scale deployment of variable renewable generation, active load and distributed generation resources, adaptive protection and control systems, and price-responsive demand. High-fidelity modeling of this future grid will require significant advances in coupled, multi-scale tools and their use on high performance computing (HPC) platforms. This LDRD report demonstrates SNL's capability to apply HPC resources to these 3 tasks: (1) High-fidelity, large-scale modeling of power system dynamics; (2) Statistical assessment of grid security via Monte-Carlo simulations of cyber attacks; and (3) Development of models to predict variability of solar resources at locations where little or no ground-based measurements are available.

  1. Grid Computing and its Applications in the Biomedical Informatics Domain

    E-Print Network [OSTI]

    Demurjian, Steven A.

    to the electric power grid which supplies virtually unlimited electric power to an individual or entity the resources of the computer grid (the appliance is turned on consuming power from the electric power grid of the Grid there would be a cost per CPU hour charged for usage. Currently Sun Micro systems charges $1

  2. Modeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter

    E-Print Network [OSTI]

    Bak, Claus Leth

    of power converter are important issues todays as the grid is becoming much more power electronics filtering and resonance damping methods are studied in islanded micro- grid application to reduceModeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter based

  3. SU-E-J-102: Separation of Metabolic Supply and Demand: From Power Grid Economics to Cancer Metabolism

    SciTech Connect (OSTI)

    Epstein, T; Xu, L; Gillies, R; Gatenby, R

    2014-06-01

    Purpose: To study a new model of glucose metabolism which is primarily governed by the timescale of the energetic demand and not by the oxygen level, and its implication on cancer metabolism (Warburg effect) Methods: 1) Metabolic profiling of membrane transporters activity in several cell lines, which represent the spectrum from normal breast epithelium to aggressive, metastatic cancer, using Seahorse XF reader.2) Spatial localization of oxidative and non-oxidative metabolic components using immunocytochemical imaging of the glycolytic ATP-producing enzyme, pyruvate kinase and mitochondria. 3) Finite element simulations of coupled partial differential equations using COMSOL and MATLAB. Results: Inhibition or activation of pumps on the cell membrane led to reduction or increase in aerobic glycolysis, respectively, while oxidative phosphorylation remained unchanged. These results were consistent with computational simulations of changes in short-timescale demand for energy by cell membrane processes. A specific model prediction was that the spatial distribution of ATP-producing enzymes in the glycolytic pathway must be primarily localized adjacent to the cell membrane, while mitochondria should be predominantly peri-nuclear. These predictions were confirmed experimentally. Conclusion: The results in this work support a new model for glucose metabolism in which glycolysis and oxidative phosphorylation supply different types of energy demand. Similar to power grid economics, optimal metabolic control requires the two pathways, even in normoxic conditions, to match two different types of energy demands. Cells use aerobic metabolism to meet baseline, steady energy demand and glycolytic metabolism to meet short-timescale energy demands, mainly from membrane transport activities, even in the presence of oxygen. This model provides a mechanism for the origin of the Warburg effect in cancer cells. Here, the Warburg effect emerges during carcinogenesis is a physiological response to an increase in energy demands from membrane transporters, required for cell division, growth, and migration. This work is supported by the NIH Physical Sciences in Oncology Center grant 1U54CA143970-03 and NIH R01 CA077575-10.

  4. An engineering-economic analysis of combined heat and power technologies in a (mu)grid application

    E-Print Network [OSTI]

    Bailey, Owen; Ouaglal, Boubekeur; Bartholomew, Emily; Marnay, Chris; Bourassa, Norman

    2002-01-01

    quality and reliability photovoltaic Power Exchange marketin California Power Exchange revenue neutral microgrid

  5. Scalable Real Time Data Management for Smart Grid

    SciTech Connect (OSTI)

    Yin, Jian; Kulkarni, Anand V.; Purohit, Sumit; Gorton, Ian; Akyol, Bora A.

    2011-12-16

    This paper presents GridMW, a scalable and reliable data middleware for smart grids. Smart grids promise to improve the efficiency of power grid systems and reduce green house emissions through incorporating power generation from renewable sources and shaping demand to match the supply. As a result, power grid systems will become much more dynamic and require constant adjustments, which requires analysis and decision making applications to improve the efficiency and reliability of smart grid systems.

  6. Sandia Energy - Grid System Planning for Wind: Wind Generator...

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

    Grid System Planning for Wind: Wind Generator Modeling Home Stationary Power Energy Conversion Efficiency Wind Energy Siting and Barrier Mitigation Grid System Planning for Wind:...

  7. Grid Monitoring, Modeling, and Analysis | ornl.gov

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

    Grid Monitoring, Modeling, and Analysis SHARE Grid Monitoring, Modeling, and Analysis The electric power industry has undergone extensive changes over the past several decades and...

  8. Prospects of Smart Grid Technologies for a Sustainable and Secure...

    Open Energy Info (EERE)

    Prospects of Smart Grid Technologies for a Sustainable and Secure Power Supply Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Prospects of Smart Grid Technologies for a...

  9. Modeling, Characterization and Simulation of On-Chip Power Delivery Networks and Temperature Profile on Multi-Core Microprocessors

    E-Print Network [OSTI]

    Li, Duo

    2010-01-01

    The power grid model used. . . . . . . . . . . . . . . . . .143 xii List of Figures The power gridRealization for On-Chip Power Grid Network Analysis Power

  10. Solar Energy Grid Integration Systems. Final Report of the Princeton Power Systems Development of the 100kW Demand Response Inverter.

    SciTech Connect (OSTI)

    Bower, Ward Isaac; Heavener, Paul (Princeton Power Systems, Inc., Princeton, NJ); Sena-Henderson, Lisa; Hammell, Darren (Princeton Power Systems, Inc., Princeton, NJ); Holveck, Mark (Princeton Power Systems, Inc., Princeton, NJ); David, Carolyn; Akhil, Abbas Ali; Gonzalez, Sigifredo

    2012-01-01

    Initiated in 2008, the Solar Energy Grid Integration (SEGIS) program is a partnership involving the U.S. Department of Energy, Sandia National Laboratories, electric utilities, academic institutions and the private sector. Recognizing the need to diversify the nation's energy portfolio, the SEGIS effort focuses on specific technologies needed to facilitate the integration of large-scale solar power generation into the nation's power grid Sandia National Laboratories (SNL) awarded a contract to Princeton Power Systems, Inc., (PPS) to develop a 100kW Advanced AC-link SEGIS inverter prototype under the Department of Energy Solar Energy Technologies Program for near-term commercial applications. This SEGIS initiative emphasizes the development of advanced inverters, controllers, communications and other balance-of-system components for photovoltaic (PV) distributed power applications. The SEGIS Stage 3 Contract was awarded to PPS on July 28, 2010. PPS developed and implemented a Demand Response Inverter (DRI) during this three-stage program. PPS prepared a 'Site Demonstration Conference' that was held on September 28, 2011, to showcase the cumulative advancements. This demo of the commercial product will be followed by Underwriters Laboratories, Inc., certification by the fourth quarter of 2011, and simultaneously the customer launch and commercial production sometime in late 2011 or early 2012. This final report provides an overview of all three stages and a full-length reporting of activities and accomplishments in Stage 3.

  11. Grid Integration

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

    Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its grid integration subprogram.

  12. Identification of Severe Multiple Contingencies in Electric Power Systems

    E-Print Network [OSTI]

    Donde, Vaibhav

    2010-01-01

    a nonlinear model for the power grid, including traditionalRobust operation of a power grid requires anticipation of

  13. Grid Applications for Energy Storage Flow Cells for Energy Storage Workshop

    E-Print Network [OSTI]

    Storage #12;Competitive Electric Market Structure Power Generation Distributed Generation Grid Management Power Mkts. & Reliability Micro-Grids Power Quality Grid Reliability Competitive State Regulated FERCGrid Applications for Energy Storage Flow Cells for Energy Storage Workshop Washington DC 7

  14. OpenADR Open Source Toolkit: Developing Open Source Software for the Smart Grid

    E-Print Network [OSTI]

    McParland, Charles

    2012-01-01

    important part of power grid planning and operation. Theview of demand response as a power grid system behavior thatWhile much of the current power grid head end is already

  15. Optimal Planning and Operation of Smart Grids with Electric Vehicle Interconnection

    E-Print Network [OSTI]

    Stadler, Michael

    2012-01-01

    sources and EVs on the power grid and electricity prices.storage capabilities to the power grid by utilizing plug-inprices due to additional power grid loads from EVs. Since

  16. Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid

    E-Print Network [OSTI]

    Hill, Steven Craig

    2013-01-01

    63  Off?Grid (Stand?Alone) PV Power System not well established. OFF-GRID (STAND-ALONE) PV POWER SYSTEMvariability characteristics of off-grid PV power systems and

  17. Development of a low cost integrated 15 kW A.C. solar tracking sub-array for grid connected PV power system applications

    SciTech Connect (OSTI)

    Stern, M.; West, R.; Fourer, G.; Whalen, W.; Van Loo, M.; Duran, G.

    1997-02-01

    Utility Power Group has achieved a significant reduction in the installed cost of grid-connected PV systems. The two part technical approach focused on (1) The utilization of a large area factory assembled PV panel, and (2) The integration and packaging of all sub-array power conversion and control functions within a single factory produced enclosure. Eight engineering prototype 15kW ac single axis solar tracking sub-arrays were designed, fabricated, and installed at the Sacramento Municipal Utility District{close_quote}s Hedge Substation site in 1996 and are being evaluated for performance and reliability. A number of design enhancements will be implemented in 1997 and demonstrated by the field deployment and operation of over twenty advanced sub-array PV power systems. {copyright} {ital 1997 American Institute of Physics.}

  18. Quiz: Test Your Grid IQ | Department of Energy

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

    Quiz: Test Your Grid IQ Quiz: Test Your Grid IQ April 20, 2015 - 2:20pm Addthis Test your Power Grid IQ Do you know your synchrophasors from your microgrids? Test your knowledge of...

  19. Abstract--This paper looks into the vulnerabilities of the electric power grid and associated communication network, in the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for electrical energy supply and their conception/renovation as "smart" grids [4]-[8] with distributed generation challenge, European Foundation for New Energy-EDF at Ecole Centrale Paris and Supelec, Paris, France. He is also with Energy Department, Politecnico di Milano, 20133 Milan, Italy (phone: 39-02-2399.6340; fax: 39

  20. Power network analysis and optimization

    E-Print Network [OSTI]

    Zhang, Wanping

    2009-01-01

    and J. N. Kozhaya, “Fast power grid simulation,” in Proc.C. Chen, “Efficient large-scale power grid analysis based onare connected between power grid nodes and the ground. Time-

  1. The Evolution of the Internet Community and the "Yet-to-Evolve" Smart Grid Community: Parallels and Lessons-to-be-Learned

    E-Print Network [OSTI]

    McParland, Charles

    2010-01-01

    little involvement in power grid operations – the consumer.an integrated, efficient and secure electrical power grid.remaking of the present power grid into the Smart Grid is

  2. Principal Characteristics of a Modern Grid

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

    Delivery and Energy Reliability MODERN GRID S T R A T E G Y Danish Power System Transformation 58 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R...

  3. Vids4Grids- Controls, Connectors & Surge Protectors

    Broader source: Energy.gov [DOE]

    Modernizing our grid means exciting new devices in the power sector. Find out how new lighting controls, connectors and surge protection will bring out electric grid to the next level.

  4. Cyber-Physical Systems Security for Smart Grid

    E-Print Network [OSTI]

    Cyber-Physical Systems Security for Smart Grid Future Grid Initiative White Paper Power Systems-Physical Systems Security for Smart Grid Prepared for the Project "The Future Grid to Enable Sustainable Energy Acknowledgements This white paper was developed as one of nine white papers in the project "The Future Grid

  5. An engineering-economic analysis of combined heat and power technologies in a (mu)grid application

    E-Print Network [OSTI]

    Bailey, Owen; Ouaglal, Boubekeur; Bartholomew, Emily; Marnay, Chris; Bourassa, Norman

    2002-01-01

    Economic Analysis of Combined Heat and Power Technologies inEconomic Analysis of Combined Heat and Power Technologies inAgency (1998). Combined Heat and Power in Denmark. Version

  6. The Global Grid

    E-Print Network [OSTI]

    Chatzivasileiadis, Spyros; Andersson, Göran

    2012-01-01

    This paper puts forward the vision that a natural future stage of the electricity network could be a grid spanning the whole planet and connecting most of the large power plants in the world: this is the "Global Grid". The main driving force behind the Global Grid will be the harvesting of remote renewable sources, and its key infrastructure element will be the high capacity long transmission lines. Wind farms and solar power plants will supply load centers with green power over long distances. This paper focusses on the introduction of the concept, showing that a globally interconnected network can be technologically feasible and economically competitive. We further highlight the multiple opportunities emerging from a global electricity network such as smoothing the renewable energy supply and electricity demand, reducing the need for bulk storage, and reducing the volatility of the energy prices. We also discuss possible investment mechanisms and operating schemes. Among others, we envision in such a system...

  7. Sensor Grid: Integration of Wireless Sensor Networks and the Grid

    E-Print Network [OSTI]

    Teo, Yong-Meng

    With the convergence of technologies such as MEMS sensor devices, wireless networking, and low-power em- beddedSensor Grid: Integration of Wireless Sensor Networks and the Grid Hock Beng Lim1 , Yong Meng Teo1 Microsystems, Inc. E-mail: [limhb, teoym]@comp.nus.edu.sg Abstract Wireless sensor networks have emerged

  8. Randomized Auction Design for Electricity Markets between Grids and Microgrids

    E-Print Network [OSTI]

    Li, Zongpeng

    Randomized Auction Design for Electricity Markets between Grids and Microgrids Linquan Zhang Dept power markets with grid-to-microgrid and microgrid-to-grid energy sales are studied, with an auction of algorithms General Terms Algorithms, Design, Economics Keywords Power Grid; Microgrids; Unit Commitment

  9. Grid Security

    E-Print Network [OSTI]

    Sinnott, R.O.

    Sinnott,R.O. National Centre for e-Social Science book, Grid Computing: Technology, Service and Application, CRC Press, November 2008.

  10. Smart Grid Integration Laboratory

    SciTech Connect (OSTI)

    Wade Troxell

    2011-09-30

    The initial federal funding for the Colorado State University Smart Grid Integration Laboratory is through a Congressionally Directed Project (CDP), DE-OE0000070 Smart Grid Integration Laboratory. The original program requested in three one-year increments for staff acquisition, curriculum development, and instrumentation â?? all which will benefit the Laboratory. This report focuses on the initial phase of staff acquisition which was directed and administered by DOE NETL/ West Virginia under Project Officer Tom George. Using this CDP funding, we have developed the leadership and intellectual capacity for the SGIC. This was accomplished by investing (hiring) a core team of Smart Grid Systems engineering faculty focused on education, research, and innovation of a secure and smart grid infrastructure. The Smart Grid Integration Laboratory will be housed with the separately funded Integrid Laboratory as part of CSUâ??s overall Smart Grid Integration Center (SGIC). The period of performance of this grant was 10/1/2009 to 9/30/2011 which included one no cost extension due to time delays in faculty hiring. The Smart Grid Integration Laboratoryâ??s focus is to build foundations to help graduate and undergraduates acquire systems engineering knowledge; conduct innovative research; and team externally with grid smart organizations. Using the results of the separately funded Smart Grid Workforce Education Workshop (May 2009) sponsored by the City of Fort Collins, Northern Colorado Clean Energy Cluster, Colorado State University Continuing Education, Spirae, and Siemens has been used to guide the hiring of faculty, program curriculum and education plan. This project develops faculty leaders with the intellectual capacity to inspire its students to become leaders that substantially contribute to the development and maintenance of Smart Grid infrastructure through topics such as: (1) Distributed energy systems modeling and control; (2) Energy and power conversion; (3) Simulation of electrical power distribution system that integrates significant quantities of renewable and distributed energy resources; (4) System dynamic modeling that considers end-user behavior, economics, security and regulatory frameworks; (5) Best practices for energy management IT control solutions for effective distributed energy integration (including security with the underlying physical power systems); (6) Experimental verification of effects of various arrangements of renewable generation, distributed generation and user load types along with conventional generation and transmission. Understanding the core technologies for enabling them to be used in an integrated fashion within a distribution network remains is a benefit to the future energy paradigm and future and present energy engineers.

  11. 2012 Smart Grid Peer Review Presentations - Day 2 Smart Grid...

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

    Day 2 Smart Grid panel discussion are below. Moderator: Lee Kreval, SDG&E 2012 SG Peer Review - Day 2 Panel Discussion: Puesh Kumar, American Public Power Association 2012 SG Peer...

  12. Buildings-to-Grid Technical Opportunities: From the Grid Perspective

    SciTech Connect (OSTI)

    Kropski, Ben; Pratt, Rob

    2014-03-28

    This paper outlines the nature of the power grid, lists challenges and barriers to the implementation of a transactive energy ecosystem, and provides concept solutions to current technological impediments.

  13. Vids 4 Grids: Surge Arresters and Switchgears

    Broader source: Energy.gov [DOE]

    A new video series is increasing general public knowledge of the cutting edge jobs in the power sector that are essential to implementing a national clean-energy Smart Grid. Find out how switches and surge arresters are making the grid more reliable -- helping to bring the grid into the 21st century.

  14. Computational Needs for the Next Generation Electric Grid Proceedings

    E-Print Network [OSTI]

    Birman, Kenneth

    2012-01-01

    of Energy  Computational Needs for Next Generation Electric Generation Electric Grid   HyungSeon   Oh  National Energy generation  communication requirements, technologies, and architecture for the electric power  grid”, IEEE   Power and Energy 

  15. Assessment of TRAC-PF1/MOD1 against a loss-of-grid transient in Ringhals 4 power plant

    SciTech Connect (OSTI)

    Sjoberg, A; Almberger, J; Sandervag, O

    1989-07-01

    A loss of grid transient in a three loop Westinghouse PWR has been simulated with the frozen version of TRAC-PF1/MOD1 computer code. The results reveal the capability of the code to qualitatively predict the different pertinent phenomena and the data comparison was quite encouraging. Accurate predictions of the system response required careful determination of the boundary conditions simulating the turbine governor valves and steam dump valves behaviour. An explicit modeling of the steam generator internals was also found to be important for the results. It was also revealed that the pressurizer system including spray and heaters and their operation should be modeled in some detail for proper response. 4 refs., 18 figs.

  16. Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

    SciTech Connect (OSTI)

    Diana K. Grauer

    2011-10-01

    This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

  17. The Quest for Sustainable Smart Grids

    E-Print Network [OSTI]

    Nardelli, Pedro H J; Cardieri, Paulo; Latva-aho, Matti

    2013-01-01

    This paper is a reply to the opinion paper: Transdisciplinary electric power grid science (PNAS), 2013 [arXiv:1307.7305].

  18. Case Study - EPB Smart Grid Investment Grant

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

    Grid Investment Grant 1 Smart switches installed in EPB service territory A Smarter Electric Circuit: Electric Power Board of Chattanooga Makes the Switch EPB of Chattanooga,...

  19. BPA Study of Smart Grid Economics ...

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

    Study of Smart Grid Economics Identifies Attractive Opportunities and Key Uncertainties Bonneville Power Administration (BPA) and Navigant Consulting recently released a white...

  20. Opening Remarks, Grid Integration Initiative Overview

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

    Loads Power Systems Integration Lab PV and Grid Simulators Energy Systems Integration Lab Fuel Cells, Electrolyzers Outdoor Test Area EVs, MV equipment Rooftop PV & Wind Energy...