著者

佐々木 鉄於 小山 泰史

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.121, no.4, pp.559-569, 2001-04-01 (Released:2008-12-19)

参考文献数

4

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We study the voltage stiffness effect for cascading tripping and its protection in power systems. This paper describes a new selective method of proper system separating point to prevent from system failure extension to wide area. We define “the voltage stiffness” by short circuit capacity and line impedance, and explain an operation to select proper separation point. In addition, we consider the security after system separations. It is dominated by both increase of reactive power transmission losses and margin of reactive power supply of generator. The basic 4 power system structures are also considered in this paper. The topological analysis of power system can show the best system structure in both power interchange and cascading trip protection. We apply the proposed method to practical power systems and simulate power system faults. Simulation results show that separating system at the selected point can defend cascading tripping.