浙江电力

2017, v.36;No.259(11) 12-15+66

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一起电流二次回路非典型相间短路故障分析
Analysis on an Untypical Interphase Short-circuit Fault in Secondary Current Circuit

田洪磊,王一,吕旭东,张松,黄超
TIAN Honglei,WANG Yi,LYU Xudong,ZHANG Song,HUANG Chao

摘要(Abstract):

在一起非典型500 k V线路保护电流二次回路的相间短路故障中,由于短路电阻的存在,导致短路的两相电流出现了换相现象。通过对故障现象进行分析,结合理论计算出短路电阻大小,并借助PSCAD建模加以验证。根据仿真结果分析了短路电阻大小对短路电流的影响,为运维检修人员处理类似缺陷提供了参考。
This paper presents an untypical instance of phase-to-phase short-circuit fault in secondary current fault of 500 k V line protection. During to the short circuit resistance, the phases of the short-circuit current were inverted. By observation and analysis, the value of fault resistance is calculated, and the phenomenon is verified by PSCAD modeling. The influences of short-circuit resistance on short-circuit current is analyzed by simulation result, which can be referenced by operation and maintenance engineers in dealing with similar defects.

关键词(KeyWords): 电流二次回路;相间短路;短路电阻;故障分析;继电保护
secondary current circuit;interphase short circuit;short-circuit resistance;fault analysis;relay protection

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 田洪磊,王一,吕旭东,张松,黄超
TIAN Honglei,WANG Yi,LYU Xudong,ZHANG Song,HUANG Chao

DOI: 10.19585/j.zjdl.201711002

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