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Discrete analysis of stability for PSS and SVC in electric power plant auxiliary system

Yanchi Zhang

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Abstract

For the coordination between devices,the discrete mathematical models of PSS(Power System Stabilizer),SVC(Static Var Compensator) and generator with excitation system are established for the power plant auxiliary system. The interaction between SVC and PSS,which are operating correlatively and closely,is studied and the ways to improve their stability are researched. It is pointed out that the design of SVC controller must consider the influence of the amplification factor of PSS. The simulation of SVC dynamic performance indicates that,the system stability can be enhanced by improving its proportional and integral coefficients. Simulative experiments validate the results of disperse analysis.

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What this paper is about

For the coordination between devices,the discrete mathematical models of PSS(Power System Stabilizer),SVC(Static Var Compensator) and generator with excitation system are established for the power plant auxiliary system. The interaction between SVC and PSS,which are operating correlatively and closely,is studied and the ways to improve their stability are researched. It is pointed out that the design of SVC controller must consider the influence of the amplification factor of PSS. The simulation of SVC dynamic performance indicates that,the system stability can be enhanced by improving its proportional and integral coefficients. Simulative experiments validate the results of disperse analysis.

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Available abstract

For the coordination between devices,the discrete mathematical models of PSS(Power System Stabilizer),SVC(Static Var Compensator) and generator with excitation system are established for the power plant auxiliary system. The interaction between SVC and PSS,which are operating correlatively and closely,is studied and the ways to improve their stability are researched. It is pointed out that the design of SVC controller must consider the influence of the amplification factor of PSS. The simulation of SVC dynamic performance indicates that,the system stability can be enhanced by improving its proportional and integral coefficients. Simulative experiments validate the results of disperse analysis.

Key concepts: Static VAR compensator, Control theory (sociology), Electric power system, Stability (learning theory), Controller (irrigation), Generator (circuit theory), Power (physics), Stabilizer (aeronautics)

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