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《Proceedings of the Csee》 1999-01
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A NEW METHOD FOR FAULT CALCULATION IN POWER SYSTEM BASED ON THE DECOMPOSITION COORDINATON METHOD

Cao Guochen Haerbin Institute of Technology,Haerbin\ 150001\ China Wu Xiaomei\ Song Jiahua Northeast Institute of Electric Power Engineering,Jilin\ 132012\ China Liu Zhuo Haerbin Institute of Technology,Haerbin\ 150001\ China  
In this paper,a decomposition coordination method for fault calculations in a power system with symmetrical and/or asymmetrical components is presented.A fault is modeled as a modification to the network topology of original networks.Based on the decomposition coordination method,a large scale power system is divided into several subsystems without electromagnetic connections between them and by using the compensation method and the phase sequence parameter transformation technique,any fault problem can be solved without constituting the mathematical model of faulted subsystems.The method can fully utilize the fact that the symmetrical components can be decoupled in symmetrical component coordinates,and can be adaptable to the network changes in topology caused by the faults.The method has been proved to be fast and accurate by a numerical example.
【CateGory Index】: TM744
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