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《Automation of Electric Power Systems》 2001-16
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PRACTICAL DYNAMIC SECURITY REGIONS OF BULK POWER SYSTEMS

Zeng Yuan l, Fan Jichaol, Yu Yixinl, Lu Fang', Huang Yaogui'(1. Tianjin University, T.ianjin 300072, China)(2. Central China Electric Power Systems Group, Wuhan 430000, China)  
A study on dynamic security regions (DSR) of a bulk power system shows that the boundary of the practicaldynamic security regions (PDSR) on injection space, which can ensure transient angle stability, is made up of the hyperplanes vertical to coordinates axes that represent upper and lower limits of the nodes injections. and a hyper--plane whichdescribes critical points about transient angle stability for specific serious contingency. The PDSR is constructed by the leastsquare approach, which uses lots of critical points searched by numerical simulation on the bulk power system. So it showscharacteristics on security stability of the actual system, and its precision can be accepted in engineering practice. This paperalso puts forward that the key nodes of the complicated power system can reduce the dimension of PDSR. Such PDSR can beexpressed, used and visualized easily. With its on--line application, not only whether the power system will guarantee itstransient stability corresponding to the specific system operating condition and contingency can be obtained. but also stabilitymargins in different directions on injection space by analytical calculation or observation. The supplied valid information canbe used in transient stabilit'y monitoring and control in present (monopolistic) power system as well as in the deregulatedelectricity market.This project is supported by National Key Basic Research Special Fund of China (No. G1998020307).
【Fund】: 国家重点基础研究专项经费资助项目 (G19980 2 0 30 7)
【CateGory Index】: TM711
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