Grid stabilization using adjusted voltage regulator response to grid characteristics

Schneider, Kevin P.; Tuffner, Francis K.; Hansen, Jacob; Tang, Yingying; Radhakrishnan, Nikitha; Mana, Priya Thekkumparambath

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Grid stabilization using adjusted voltage regulator response to grid characteristics

Abstract

Apparatus and methods are disclosed for control systems for improving stability of electrical grids by temporarily reducing voltage output of electrical generators responsive to transient events on an electrical grid. In one example of the disclosed technology, a controller is coupled is to an automatic voltage regulator, which in turn adjusts excitation current of an electrical generator responsive to changes in frequency detected for the electrical grid. Reducing the output voltage temporarily allows for smaller generators to provide power to the microgrid. Methods for selecting parameters determining how the controller generates a regulation signal used to adjust the excitation current are further disclosed.

Inventors:: Schneider, Kevin P.; Tuffner, Francis K.; Hansen, Jacob; Tang, Yingying; Radhakrishnan, Nikitha; Mana, Priya Thekkumparambath

Issue Date:: Tue Sep 22 00:00:00 EDT 2020

Research Org.:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1735307

Patent Number(s):: 10784686

Application Number:: 15/875,981

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Classifications (CPCs):: H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

Show more

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
H02J2300/10 - The dispersed energy generation being of fossil origin, e.g. diesel generators
H02J3/241 - {The oscillation concerning frequency}
H02J3/381 - {Dispersed generators}

Show less

DOE Contract Number:: AC05-76RL01830

Resource Type:: Patent

Resource Relation:: Patent File Date: 01/19/2018

Country of Publication:: United States

Language:: English

Subject:: 24 POWER TRANSMISSION AND DISTRIBUTION; 42 ENGINEERING

Citation Formats


                    Schneider, Kevin P., Tuffner, Francis K., Hansen, Jacob, Tang, Yingying, Radhakrishnan, Nikitha, and Mana, Priya Thekkumparambath. Grid stabilization using adjusted voltage regulator response to grid characteristics.  United States: N. p., 2020. 
        Web.

Copy to clipboard


                    Schneider, Kevin P., Tuffner, Francis K., Hansen, Jacob, Tang, Yingying, Radhakrishnan, Nikitha, & Mana, Priya Thekkumparambath. Grid stabilization using adjusted voltage regulator response to grid characteristics.  United States.

Copy to clipboard


                    Schneider, Kevin P., Tuffner, Francis K., Hansen, Jacob, Tang, Yingying, Radhakrishnan, Nikitha, and Mana, Priya Thekkumparambath. Tue .  
        "Grid stabilization using adjusted voltage regulator response to grid characteristics".  United States.  https://www.osti.gov/servlets/purl/1735307.

Copy to clipboard


                    
@article{osti_1735307,

  title        = {Grid stabilization using adjusted voltage regulator response to grid characteristics},

  author       = {Schneider, Kevin P. and Tuffner, Francis K. and Hansen, Jacob and Tang, Yingying and Radhakrishnan, Nikitha and Mana, Priya Thekkumparambath},

  abstractNote = {Apparatus and methods are disclosed for control systems for improving stability of electrical grids by temporarily reducing voltage output of electrical generators responsive to transient events on an electrical grid. In one example of the disclosed technology, a controller is coupled is to an automatic voltage regulator, which in turn adjusts excitation current of an electrical generator responsive to changes in frequency detected for the electrical grid. Reducing the output voltage temporarily allows for smaller generators to provide power to the microgrid. Methods for selecting parameters determining how the controller generates a regulation signal used to adjust the excitation current are further disclosed.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Sep 22 00:00:00 EDT 2020},

  month        = {Tue Sep 22 00:00:00 EDT 2020}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Automated voltage support from load resources
patent, June 2018

Black, Jason Wayne; Rehberg, Eric; McCullough, Jason
US Patent Document 9,991,711
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9991711

Automatic voltage regulator, automatic voltage regulating method, generator excitation system, and power generation system
patent, January 2019

Mukoyama, Shinji; Shibata, Masahiko; Hiramatsu, Daisuke
US Patent Document 10,177,697
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/10177697

Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems
patent, May 2012

Tuffner, Francis K.; Kintner-Meyer, Michael C. W.; Hammerstrom, Donald J.
US Patent Document 8,183,826
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8183826

Effects of distributed energy resources on conservation voltage reduction (CVR)
conference, July 2011

Singh, Ruchi; Tuffner, Francis; Fuller, Jason
2011 IEEE Power & Energy Society General Meeting, 2011 IEEE Power and Energy Society General Meeting
https://doi.org/10.1109/PES.2011.6039702

Grid Friendly Appliance Controllers to Increase the Dynamic Stability of Networked Resiliency-based Microgrids
conference, April 2018

Tuffner, Francis K.; Radhakrishnan, Nikitha; Tang, Yingying
2018 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)
https://doi.org/10.1109/TDC.2018.8440136

Grid regulation services for energy storage devices based on grid frequency
patent, July 2013

Pratt, Richard M.; Hammerstrom, Donald J.; Kintner-Meyer, Michael C. W.
US Patent Document 8,478,452
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8478452

Method of Evaluating Change in Energy Consumption Due to Volt VAR Optimization
patent-application, March 2016

Williams, Tess L.; Schneider, Kevin P.; Campbell, Michael T.
US Patent Application 14/870525; 20160091539
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20160091539

Grid regulation services for energy storage devices based on grid frequency
patent, September 2017

Pratt, Richard M.; Hammerstrom, Donald J.; Kintner-Meyer, Michael C. W.
US Patent Document 9,753,440
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9753440

Conservation voltage reduction (CVR) at Snohomish County PUD
journal, January 1991

Kennedy, B. W.; Fletcher, R. H.
IEEE Transactions on Power Systems, Vol. 6, Issue 3
https://doi.org/10.1109/59.119238

Droop Control as an Alternative Inertial Response Strategy for the Synthetic Inertia on Wind Turbines
journal, March 2016

Van de Vyver, Jan; De Kooning, Jeroen D. M.; Meersman, Bart
IEEE Transactions on Power Systems, Vol. 31, Issue 2
https://doi.org/10.1109/TPWRS.2015.2417758

Analytic Considerations and Design Basis for the IEEE Distribution Test Feeders
journal, May 2018

Schneider, K. P.; Mather, B. A.; Pal, B. C.
IEEE Transactions on Power Systems, Vol. 33, Issue 3
https://doi.org/10.1109/TPWRS.2017.2760011

Thermal energy storage devices, systems, and thermal energy storage device monitoring methods
patent, September 2016

Tugurlan, Maria C.; Tuffner, Francis K.; Chassin, David P.
US Patent Document 9,441,889
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9441889

Implementation of conservation voltage reduction at Commonwealth Edison
journal, January 1990

Kirshner, D.
IEEE Transactions on Power Systems, Vol. 5, Issue 4
https://doi.org/10.1109/59.99368

Evaluating the Magnitude and Duration of Cold Load Pick-up on Residential Distribution Feeders Using Multi-State Load Models
journal, September 2016

Schneider, Kevin P.; Sortomme, Eric; Venkata, S. S.
IEEE Transactions on Power Systems, Vol. 31, Issue 5
https://doi.org/10.1109/TPWRS.2015.2494882

Multi-State Load Models for Distribution System Analysis
journal, November 2011

Schneider, Kevin P.; Fuller, Jason C.; Chassin, David P.
IEEE Transactions on Power Systems, Vol. 26, Issue 4
https://doi.org/10.1109/TPWRS.2011.2132154

Control System for Maintaining Preferred Battery Levels in a Microgrid
patent-application, October 2017

Varadarjan, Karthikeyan; Riazi, Ali
US Patent Application 15/084388; 20170288413
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20170288413

Grid regulation services for energy storage devices based on grid frequency
patent, April 2014

Pratt, Richard M.; Hammerstrom, Donald J.; Kintner-Meyer, Michael C. W.
US Patent Document 8,700,225
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8700225

Adaptive Dynamic Simulations for Distribution Systems Using Multistate Load Models
journal, March 2019

Schneider, Kevin P.; Tuffner, Francis K.; Elizondo, Marcelo A.
IEEE Transactions on Smart Grid, Vol. 10, Issue 2
https://doi.org/10.1109/TSG.2018.2794180

A Method for Evaluating Volt-VAR Optimization Field Demonstrations
journal, July 2014

Schneider, K. P.; Weaver, T. F.
IEEE Transactions on Smart Grid, Vol. 5, Issue 4
https://doi.org/10.1109/TSG.2014.2308872

Extremum Seeking control of smart inverters for VAR compensation
conference, July 2015

Arnold, Daniel B.; Negrete-Pincetic, Matias; Stewart, Emma M.
2015 IEEE Power & Energy Society General Meeting
https://doi.org/10.1109/PESGM.2015.7286378

Impact of V2G on real-time adaptive Volt/VAr optimization of distribution networks
conference, August 2013

Manbachi, M.; Farhangi, H.; Palizban, A.
2013 IEEE Electrical Power & Energy Conference (EPEC)
https://doi.org/10.1109/EPEC.2013.6802909

Conservation Voltage Reduction (CVR) at Northeast Utilities
journal, January 1987

Lauria, D. M.
IEEE Transactions on Power Delivery, Vol. 2, Issue 4
https://doi.org/10.1109/TPWRD.1987.4308241

Phasor modeling approach for single phase A/C motors
conference, July 2008

Lesieutre, Bernard; Kosterev, Dmitry; Undrill, John
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century
https://doi.org/10.1109/PES.2008.4596554

Whole house and power system analysis via grid connected appliance
patent, April 2018

McCullough, Jason; Rehberg, Eric
US Patent Document 9,954,363
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9954363

Whole House and Power System Analysis Via Grid Connected Appliance
patent-application, October 2016

McCullough, Jason; Rehberg, Eric
US Patent Application 15/091874; 20160315472
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20160315472

Voltage-VAr optimization (VVO) future trends, challenges and opportunities
conference, April 2017

Alimisis, Varvara; Costa, Luis Miguel; Tordjman, Philippe
2017 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT)
https://doi.org/10.1109/ISGT.2017.8086000

Preventing conflicts among bid curves used with transactive controllers in a market-based resource allocation system
patent, March 2017

Fuller, Jason C.; Chassin, David P.; Pratt, Robert G.
US Patent Document 9,589,297
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9589297

Frequency Control in Isolated/Islanded Microgrids Through Voltage Regulation
journal, May 2017

Farrokhabadi, Mostafa; Canizares, Claudio A.; Bhattacharya, Kankar
IEEE Transactions on Smart Grid, Vol. 8, Issue 3
https://doi.org/10.1109/TSG.2015.2479576

Hierarchal Framework for Integrating Distributed Energy Resources into Distribution Systems
patent-application, January 2019

Lian, Jianming; Kalsi, Karanjit; Wu, Di
US Patent Application 16/035377; 20190020220
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20190020220

Battery System Management Through Non-Linear Estimation of Battery State of Charge
patent-application, May 2018

Crawford, Alasdair James; Viswanathan, Vilayanur Venkataraman; Balducci, Patrick Joseph
US Patent Application 15/395389; 20180131200
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20180131200

Enabling Resiliency Operations Across Multiple Microgrids With Grid Friendly Appliance Controllers
journal, September 2018

Schneider, Kevin P.; Tuffner, Francis K.; Elizondo, Marcelo A.
IEEE Transactions on Smart Grid, Vol. 9, Issue 5
https://doi.org/10.1109/TSG.2017.2669642

Microgrids for Service Restoration to Critical Load in a Resilient Distribution System
journal, January 2018

Xu, Yin; Liu, Chen-Ching; Schneider, Kevin P.
IEEE Transactions on Smart Grid, Vol. 9, Issue 1
https://doi.org/10.1109/TSG.2016.2591531

Dynamic Adjustment of Power Plant Output Based On Electrical Grid Characteristics
patent-application, June 2012

Haj-Maharsi, Mohamed; Singh, Sunita; Sobrink, Kent Hans
US Patent Application 12/962218; 20120139241
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20120139241

Similar Records in DOE Patents and OSTI.GOV collections:

Frequency based electric vehicle charge controller system and method for implementing demand response and regulation services to power grid using frequency detection

Patent Koritarov, Vladimir

Frequency responsive charging for plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV), a frequency sensing charging system and a method are provided for implementing demand response and regulation services to power grid using frequency detection for a frequency-based charge controller for plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV). A frequency of the power grid is continuously monitored and compared to a predefined tolerance band by a frequency sensor. Responsive to the frequency being outside the predefined tolerance band, the frequency is applied to a programmable logic controller. The programmable logic controller uses the applied frequencymore » « less
Full Text Available
Real power regulation for the utility power grid via responsive loads

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

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 onemore » « less
Full Text Available
Setting operating points for circuits in an integrated circuit chip using an integrated voltage regulator power loss model

Patent Huang, Wei; Rodriguez, Miguel; Rao, Karthik

An apparatus includes an integrated circuit chip with a set of circuits having two or more subsets of circuits; an external voltage regulator separate from the integrated circuit chip; two or more integrated voltage regulators on the integrated circuit chip that each provide an input voltage to a respective subset of the circuits; and a controller. The controller determines, using an integrated voltage regulator power loss model, an electrical power loss for the integrated voltage regulators for a first combination of operating points for the subsets of the circuits. The controller then determines, based on the electrical power loss, amore » « less
Full Text Available
Using distributed power electronics-based devices to improve the voltage and frequency stability of distribution systems

Patent Du, Wei; Schneider, Kevin P.; Tuffner, Francis K.; ...

Methods include, in response to a line frequency variation of a power grid, adjusting a voltage setpoint of a voltage regulator coupled to the power grid at a grid edge to maintain a voltage at the grid edge, wherein the adjusting the regulated voltage setpoint is configured to reduce the line frequency variation to stabilize the line frequency of the power grid. Apparatus include a voltage regulator configured to couple to a power grid at a grid edge and to maintain a voltage at the grid edge, wherein the voltage regulator is further configured to adjust a voltage setpoint ofmore » « less
Full Text Available
Methods, systems and apparatus for adjusting modulation index to improve linearity of phase voltage commands

Patent Gallegos-Lopez, Gabriel; Perisic, Milun; Kinoshita, Michael H.

Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a motor drive system. The disclosed embodiments provide a mechanism for adjusting modulation index of voltage commands to improve linearity of the voltage commands.
Full Text Available

Similar Records

Title: Grid stabilization using adjusted voltage regulator response to grid characteristics

Abstract

Citation Formats

Automated voltage support from load resources patent, June 2018

Automatic voltage regulator, automatic voltage regulating method, generator excitation system, and power generation system patent, January 2019

Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems patent, May 2012

Effects of distributed energy resources on conservation voltage reduction (CVR) conference, July 2011

Grid Friendly Appliance Controllers to Increase the Dynamic Stability of Networked Resiliency-based Microgrids conference, April 2018

Grid regulation services for energy storage devices based on grid frequency patent, July 2013

Method of Evaluating Change in Energy Consumption Due to Volt VAR Optimization patent-application, March 2016

Grid regulation services for energy storage devices based on grid frequency patent, September 2017

Conservation voltage reduction (CVR) at Snohomish County PUD journal, January 1991

Droop Control as an Alternative Inertial Response Strategy for the Synthetic Inertia on Wind Turbines journal, March 2016

Analytic Considerations and Design Basis for the IEEE Distribution Test Feeders journal, May 2018

Thermal energy storage devices, systems, and thermal energy storage device monitoring methods patent, September 2016

Implementation of conservation voltage reduction at Commonwealth Edison journal, January 1990

Evaluating the Magnitude and Duration of Cold Load Pick-up on Residential Distribution Feeders Using Multi-State Load Models journal, September 2016

Multi-State Load Models for Distribution System Analysis journal, November 2011

Control System for Maintaining Preferred Battery Levels in a Microgrid patent-application, October 2017

Grid regulation services for energy storage devices based on grid frequency patent, April 2014

Adaptive Dynamic Simulations for Distribution Systems Using Multistate Load Models journal, March 2019

A Method for Evaluating Volt-VAR Optimization Field Demonstrations journal, July 2014

Extremum Seeking control of smart inverters for VAR compensation conference, July 2015

Impact of V2G on real-time adaptive Volt/VAr optimization of distribution networks conference, August 2013

Conservation Voltage Reduction (CVR) at Northeast Utilities journal, January 1987

Phasor modeling approach for single phase A/C motors conference, July 2008

Whole house and power system analysis via grid connected appliance patent, April 2018

Whole House and Power System Analysis Via Grid Connected Appliance patent-application, October 2016

Voltage-VAr optimization (VVO) future trends, challenges and opportunities conference, April 2017

Preventing conflicts among bid curves used with transactive controllers in a market-based resource allocation system patent, March 2017

Frequency Control in Isolated/Islanded Microgrids Through Voltage Regulation journal, May 2017

Hierarchal Framework for Integrating Distributed Energy Resources into Distribution Systems patent-application, January 2019

Battery System Management Through Non-Linear Estimation of Battery State of Charge patent-application, May 2018

Enabling Resiliency Operations Across Multiple Microgrids With Grid Friendly Appliance Controllers journal, September 2018

Microgrids for Service Restoration to Critical Load in a Resilient Distribution System journal, January 2018

Dynamic Adjustment of Power Plant Output Based On Electrical Grid Characteristics patent-application, June 2012

Automated voltage support from load resources
patent, June 2018

Automatic voltage regulator, automatic voltage regulating method, generator excitation system, and power generation system
patent, January 2019

Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems
patent, May 2012

Effects of distributed energy resources on conservation voltage reduction (CVR)
conference, July 2011

Grid Friendly Appliance Controllers to Increase the Dynamic Stability of Networked Resiliency-based Microgrids
conference, April 2018

Grid regulation services for energy storage devices based on grid frequency
patent, July 2013

Method of Evaluating Change in Energy Consumption Due to Volt VAR Optimization
patent-application, March 2016

Grid regulation services for energy storage devices based on grid frequency
patent, September 2017

Conservation voltage reduction (CVR) at Snohomish County PUD
journal, January 1991

Droop Control as an Alternative Inertial Response Strategy for the Synthetic Inertia on Wind Turbines
journal, March 2016

Analytic Considerations and Design Basis for the IEEE Distribution Test Feeders
journal, May 2018

Thermal energy storage devices, systems, and thermal energy storage device monitoring methods
patent, September 2016

Implementation of conservation voltage reduction at Commonwealth Edison
journal, January 1990

Evaluating the Magnitude and Duration of Cold Load Pick-up on Residential Distribution Feeders Using Multi-State Load Models
journal, September 2016

Multi-State Load Models for Distribution System Analysis
journal, November 2011

Control System for Maintaining Preferred Battery Levels in a Microgrid
patent-application, October 2017

Grid regulation services for energy storage devices based on grid frequency
patent, April 2014

Adaptive Dynamic Simulations for Distribution Systems Using Multistate Load Models
journal, March 2019

A Method for Evaluating Volt-VAR Optimization Field Demonstrations
journal, July 2014

Extremum Seeking control of smart inverters for VAR compensation
conference, July 2015

Impact of V2G on real-time adaptive Volt/VAr optimization of distribution networks
conference, August 2013

Conservation Voltage Reduction (CVR) at Northeast Utilities
journal, January 1987

Phasor modeling approach for single phase A/C motors
conference, July 2008

Whole house and power system analysis via grid connected appliance
patent, April 2018

Whole House and Power System Analysis Via Grid Connected Appliance
patent-application, October 2016

Voltage-VAr optimization (VVO) future trends, challenges and opportunities
conference, April 2017

Preventing conflicts among bid curves used with transactive controllers in a market-based resource allocation system
patent, March 2017

Frequency Control in Isolated/Islanded Microgrids Through Voltage Regulation
journal, May 2017

Hierarchal Framework for Integrating Distributed Energy Resources into Distribution Systems
patent-application, January 2019

Battery System Management Through Non-Linear Estimation of Battery State of Charge
patent-application, May 2018

Enabling Resiliency Operations Across Multiple Microgrids With Grid Friendly Appliance Controllers
journal, September 2018

Microgrids for Service Restoration to Critical Load in a Resilient Distribution System
journal, January 2018

Dynamic Adjustment of Power Plant Output Based On Electrical Grid Characteristics
patent-application, June 2012