| 引用本文: | 何奔腾,周春霞.短线路两相短路时距离保护误差分析[J].电力自动化设备,2001,(11):12-13,63 |
| .Error Anaalsis of Distance Relay Protection in Phase-to-Phase Short Circuit Fault[J].Electric Power Automation Equipment,2001,(11):12-13,63 |
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| 摘要: |
| 距离保护在高压及超高压输电线路得到广泛应用，随着国内电网建设的加强，高压输电线路的长度越来越短，特别是城市电网中，短线路不断增多，但是短线路在两相短路时，由于测量电压的误差会放大，可能引起距离保护的超越。推导了短线路两相短路时电压测量误差的计算公式，分析了该误差对距离保护的影响。 |
| 关键词: 误差分析 距离保护 两相短路 输电线路 继电保护 电网 |
| DOI： |
| 分类号:TM773 |
| 基金项目: |
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| Error Anaalsis of Distance Relay Protection in Phase-to-Phase Short Circuit Fault |
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HE Ben teng 1 ZHOU Chun xia 2
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| Abstract: |
| Distance relay is widely used in HV and EHV transmission lines.Along with the development of power system,the transmission lines become shorter and shorter,especially in urban network.Because the voltage measuring error increases when phase to phase short circuit occurs, distance relay protection will act improperly.A formula of voltage measuring error calculation is derived form phase to short circuit,and its influence on distance relay protection is analyzed. |
| Key words: error analysis,distance relay,phase to phase short circuit, |
