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On modeling of high-voltage short circuit current limiter in East China Power Grid

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3 Author(s)
Song Han ; Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Xue-yan Mao ; Li-quan He

This paper establishes a model of HV-SCCL for electromechanical transient simulation using user-defined program of PSASP software. This model decides whether or how thyristor protected series compensation (TPSC) would be switched on or off and consequently controls the capacitive reactance value, through comparing periodically line current and its variation rate with the corresponding short-circuit current (SCC) threshold. The effectiveness of the proposed model is proved in a 4-machine system. Furthermore, its effects for limiting SCC and influences on system stability under conditions of different reactance parameters of SCCL are presented and analyzed in (East China Power Grid) ECPG. The results indicate that parameter selection of reactor in the SCCL applied to transmission line should not only consider an anticipative SCC limiting factor but also take into account those restrictions of series compensation degree, while the reinserting time of TPSC is also one of the critical elements required special attention in stability studies.

Published in:

Power and Energy Society General Meeting, 2010 IEEE

Date of Conference:

25-29 July 2010