DocumentCode :
1358898
Title :
Identification of voltage collapse through direct equilibrium tracing
Author :
Feng, Zhihong ; Ajjarapu, Venkataramana ; Long, Bo
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Volume :
15
Issue :
1
fYear :
2000
fDate :
2/1/2000 12:00:00 AM
Firstpage :
342
Lastpage :
349
Abstract :
This paper describes an approach for identifying power system voltage collapse. Unlike the conventional two-step procedure, it simultaneously solves the system differential and algebraic equations (at steady state) to obtain the equilibrium points. Combined with a parameterized continuation technique, the methodology identifies voltage collapse during the direct equilibrium tracing, without rebuilding system dynamic Jacobian and checking its singularity. This significantly reduces the computational cost. All the assumptions of slack and PV buses are removed. The generator field and armature current limits are also accurately implemented. Numerical test results with the New England 39-bus system are presented. Three more systems with up to 8267 buses and 1112 machines are employed to demonstrate the capability of the approach
Keywords :
bifurcation; differential equations; electric generators; power system dynamic stability; power system state estimation; 8267 bus system; New England 39-bus system; PV buses; algebraic equations; armature current limits; bifurcation; computational cost reduction; differential equations; direct equilibrium tracing; generator field; parameterized continuation technique; power system voltage collapse; voltage collapse identification; Bifurcation; Equations; Jacobian matrices; Load flow; Power system dynamics; Power system modeling; Power system security; Power systems; Steady-state; Voltage;
fLanguage :
English
Journal_Title :
Power Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8950
Type :
jour
DOI :
10.1109/59.852142
Filename :
852142
Link To Document :
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