Research on the influence of fault current limiters on commutation failure and transient stability in AC/DC power system

2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) Pub Date : 2016-10-01 DOI:10.1109/APPEEC.2016.7779940

Li Xi, Yin Minghui, Li Wei, Cui Xiaodan, L. Yazhou, Hu Yang

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引用次数: 4

Abstract

In this paper, the method of installing fault current limiters (FCLs) near DC converter station is proposed, which is aimed at the commutation failure caused by short circuit fault of the DC inverter side in AC/DC power system. Influence mechanism of FCLs on suppressing commutation failure is analyzed. What's more, effects of FCLs in different locations on commutation failure are compared. In addition, theoretical analysis of transient stability on multiple high voltage direct current (HVDC) commutation failure system with FCLs is discussed using the extended equal area criterion (EEAC) theory. Finally, simulation is carried out based on an actual power grid. Theoretical and simulation results show that, the action of FCLs can not only limit the short-circuit current, but also effectively suppress commutation failure and alleviate the power imbalance and the transferred system flow caused by the concurrent commutation failures, which can significantly decrease the power impact of the regional section and improve the transient stability of the system.

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故障限流器对交直流电力系统换相失效及暂态稳定影响的研究

本文针对交直流电源系统中直流逆变器侧短路故障引起的换相失效，提出了在直流换流站附近安装故障限流器的方法。分析了fcl对抑制换相失效的影响机理。并比较了不同位置fcl对换相失效的影响。此外，利用扩展等面积判据(EEAC)理论，讨论了含fcl的多台高压直流换相故障系统暂态稳定性的理论分析。最后，以实际电网为例进行了仿真。理论和仿真结果表明，fcl的作用不仅能限制短路电流，还能有效抑制换相故障，缓解同步换相故障引起的功率不平衡和系统转移流，显著降低区域段功率影响，提高系统暂态稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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