期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：57
期号：3
出版社：Journal of Theoretical and Applied
摘要：The stability of power electrical networks is a key factor for the delivery of high quality energy. A power system stabilizer (PSS) is designed to deliver a supplement excitation signal to a synchronous machine, to limit frequency oscillations. Frequency oscillations are consequences of either modifying the functioning point, or short circuits. Since power systems are highly non-linear systems, with configurations and parameters that change with time, the Conventional power system stabilizers (CPSS) are designed for a single functioning point. Their performances decrease when the functioning point is modified. In this paper, a fuzzy expert system (fuzzy power system stabilizer: FPSS) is designed to limit frequency oscillations of a power electrical network. Only 25 rules (comparatively to 49 rules of other works) were used to assure better performances than CPSS. Simulation tests include varying functioning points and short circuits.
关键词：Fuzzy expert system; Synchronous machine; Electrical power network; Power system stabilizer
