Methods of computing steady-state voltage stability margins of power systems
Abstract
In steady-state voltage stability analysis, as load increases toward a maximum, conventional Newton-Raphson power flow Jacobian matrix becomes increasingly ill-conditioned so power flow fails to converge before reaching maximum loading. A method to directly eliminate this singularity reformulates the power flow problem by introducing an AQ bus with specified bus angle and reactive power consumption of a load bus. For steady-state voltage stability analysis, the angle separation between the swing bus and AQ bus can be varied to control power transfer to the load, rather than specifying the load power itself. For an AQ bus, the power flow formulation is only made up of a reactive power equation, thus reducing the size of the Jacobian matrix by one. This reduced Jacobian matrix is nonsingular at the critical voltage point, eliminating a major difficulty in voltage stability analysis for power system operations.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1429386
- Patent Number(s):
- 9921602
- Application Number:
- 14/655,474
- Assignee:
- Rensselaer Polytechnic Institute, Troy, NY
- Patent Classifications (CPCs):
-
G - PHYSICS G05 - CONTROLLING G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL
G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Nov 20
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 24 POWER TRANSMISSION AND DISTRIBUTION
Citation Formats
Chow, Joe Hong, and Ghiocel, Scott Gordon. Methods of computing steady-state voltage stability margins of power systems. United States: N. p., 2018.
Web.
Chow, Joe Hong, & Ghiocel, Scott Gordon. Methods of computing steady-state voltage stability margins of power systems. United States.
Chow, Joe Hong, and Ghiocel, Scott Gordon. Tue .
"Methods of computing steady-state voltage stability margins of power systems". United States. https://www.osti.gov/servlets/purl/1429386.
@article{osti_1429386,
title = {Methods of computing steady-state voltage stability margins of power systems},
author = {Chow, Joe Hong and Ghiocel, Scott Gordon},
abstractNote = {In steady-state voltage stability analysis, as load increases toward a maximum, conventional Newton-Raphson power flow Jacobian matrix becomes increasingly ill-conditioned so power flow fails to converge before reaching maximum loading. A method to directly eliminate this singularity reformulates the power flow problem by introducing an AQ bus with specified bus angle and reactive power consumption of a load bus. For steady-state voltage stability analysis, the angle separation between the swing bus and AQ bus can be varied to control power transfer to the load, rather than specifying the load power itself. For an AQ bus, the power flow formulation is only made up of a reactive power equation, thus reducing the size of the Jacobian matrix by one. This reduced Jacobian matrix is nonsingular at the critical voltage point, eliminating a major difficulty in voltage stability analysis for power system operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 20 00:00:00 EDT 2018},
month = {Tue Mar 20 00:00:00 EDT 2018}
}
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Works referenced in this record:
Voltage stability discrimination system for power systems
patent, November 1990
- Iba, Kenji; Suzuki, Hiroshi
- US Patent Document 4,974,140
Stability transfer limit calculation in a power transmission network
patent, October 1996
- Marceau, Richard; Galiana, Francisco D.; Mailhot, Richard
- US Patent Document 5,566,085
Method for voltage stability analysis of power systems
patent, April 1998
- Ejebe, Gabriel C.; Tong, Jianzhong
- US Patent Document 5,745,368
Voltage instability predictor (VIP)--method and system for performing adaptive control to improve voltage stability in power systems
patent, April 2001
- Vu, Khoi; Novosel, Damir
- US Patent Document 6,219,591
Applications and methods for voltage instability predictor (VIP)
patent, June 2001
- Vu, Khoi; Julian, Danny; Gjerde, Jan
- US Patent Document 6,249,719
Power flow controller responsive to power circulation demand for optimizing power transfer
patent, October 2006
- Chow, Joe; Wei, Xuan K.; Fardanesh, Bruce
- US Patent Document 7,117,070
Method for calculating power flow solution of a power transmission network that includes unified power flow controllers
patent, February 2007
- Chu, Chia-Chi; Lee, Sheng-Huei; Tsai, Hung-Chi
- US Patent Document 7,177,727
Method for calculating power flow solution of a power transmission network that includes interline power flow controller (IPFC)
patent, January 2008
- Chu, Chia-Chi; Lee, Sheng-Huei; Tsai, Hung-Chi
- US Patent Document 7,321,834
Method of calculating power flow solution of a power grid that includes generalized power flow controllers
patent, October 2010
- Chu, Chia-Chi; Lee, Sheng-Huei; Chen, Chung-Hsiung
- US Patent Document 7,813,884
System and method for monitoring and managing electrical power transmission and distribution networks
patent, July 2011
- Trias, Antonio
- US Patent Document 7,979,239
Methods and systems for power systems analysis: a non-iterative state solver/estimator for power systems operation and control
patent, January 2012
- Fardanesh, Bruce
- US Patent Document 8,108,184
Measurement based voltage stability monitoring and control
patent, February 2012
- Zhang, Pei; Min, Liang; Chen, Jian
- US Patent Document 8,126,667
Power flow analysis for balanced power distribution systems
patent, December 2012
- Sun, Hongbo
- US Patent Document 8,326,594
Apparatus, methods and systems for parallel power flow calculation and power system simulation
patent, August 2015
- Seaman, Aden; Romaniuk, Oliver
- US Patent Document 9,099,866
Power Flow Simulation System, Method and Device
patent-application, January 2012
- Deaver, SR., Brian; Parikh, Parag
- US Patent Application 13/005410; 20120022713
Real-Time Monitoring of Electric Power System Voltage Stability Margins
patent-application, March 2013
- Glavic, Mevludin; Lelic, Muhidin; Novosel, Damir
- US Patent Application 13/607496; 20130066480
Hybrid Three-Phase Power Flow Analysis Method for Ungrounded Distribution Systems
patent-application, August 2013
- Sun, Hougbo
- US Patent Application 13/366608; 20130204556
Systems for Real-Time Available Transfer Capability Determination of Large Scale Power Systems
patent-application, August 2013
- Chiang, Hsiao-Dong; Tada, Yasuyuki; Wang, Cheng-Shan
- US Patent Application 13/649587; 20130218494