基于改进模块化故障分量的选相准则研究

Xiangning Lin, Zhimin Zhao, Z. Bo
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引用次数: 0

摘要

在各种系统参数和故障类型条件下,分析了基于模块化故障分量的选相器的性能。与基于两相电流差的选相器相比,该选相器的综合性能更好。然而,对于实际故障,这种相位选择器不能达到理论选择性。此外,当继电器安装在弱源一侧时,此相位选择器可能缺乏灵敏度。为此提出了一种改进方案来弥补上述不足,EMTP仿真结果表明了改进方案的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation on the phase selection criterion based on improved modular fault component
Under the conditions of the various system parameters and fault types, the performance of the phase selector based on modular fault component are analyzed. Compared with the phase selector based on difference of two phase currents, this phase selector is better in terms of overall performance. However, this phase selector cannot achieve theoretical selectivity for a real fault. Furthermore, this phase selector may lack of sensitivity where the relay is equipped on the side of weak source. So an improved scheme is presented to make up for above shortcomings, and the EMTP simulation has shown that the improved scheme is effective.
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