Influence of Arc on Interrupting Capability of Generator-source Short-circuit Current for Generator Circuit-breaker

CHENG Yong; ZHANG Wen-bing; MA Zhan-feng; LIU Jing-bo; YAN Xu; ZHAO Pei

doi:10.13296/j.1001-1609.hva.2013.08.021

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Influence of Arc on Interrupting Capability of Generator-source Short-circuit Current for Generator Circuit-breaker

更新时间：2025-04-26

- Influence of Arc on Interrupting Capability of Generator-source Short-circuit Current for Generator Circuit-breaker
- High VoltageApparatus Vol. 49, Issue 8, Pages: 119-124(2013)
- 作者机构：
  
  西安高压电器研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.08.021
  CLC： TM561
- Published：2013
- 稿件说明：
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[1]成勇,张文兵,马占峰,刘景博,严旭,赵培.电弧对发电机断路器电源侧短路电流开断能力的影响分析[J].高压电器,2013,49(08):119-124.

CHENG Yong, ZHANG Wen-bing, MA Zhan-feng, et al. Influence of Arc on Interrupting Capability of Generator-source Short-circuit Current for Generator Circuit-breaker[J]. High voltageapparatus, 2013, 49(8): 119-124.
[1]成勇,张文兵,马占峰,刘景博,严旭,赵培.电弧对发电机断路器电源侧短路电流开断能力的影响分析[J].高压电器,2013,49(08):119-124. DOI： 10.13296/j.1001-1609.hva.2013.08.021.

CHENG Yong, ZHANG Wen-bing, MA Zhan-feng, et al. Influence of Arc on Interrupting Capability of Generator-source Short-circuit Current for Generator Circuit-breaker[J]. High voltageapparatus, 2013, 49(8): 119-124. DOI： 10.13296/j.1001-1609.hva.2013.08.021.

摘要

发电机断路器电源侧短路电流具有较大的非对称度

在特殊工况下

甚至会出现电流延迟过零的现象。笔者结合实际工程中的发电机参数

计算了考虑电弧前后发电机断路器电源侧短路电流的变化

阐述了电源侧短路电流出现延迟过零的原因

分析了电弧对电源侧预期短路电流的影响。对比发电机断路器电源侧预期短路电流计算结果和系统侧短路电流开断试验数据

分析了发电机断路器电源侧短路电流的开断能力

尤其是具有延迟电流零点短路电流的开断能力

其结果可作为确定发电机断路器电源侧短路电流开断能力的参考依据。

Abstract

Generator-source short-circuit current（GSC） exhibits high degree of asymmetry

which may lead to delayed current zero under special conditions.In this paper

based on generator parameters in practice

GSC waveforms of generator circuit-breaker（GCB） are calculated with and without the influence of arc

the reason why GSC appears delayed zero is discussed

and the influence of arc on predicting GSC is analyzed.Moreover

by comparing the calculation results of GSC with the interrupting waveform of system-source short-circuit current from test

the interrupting capability for GSC

especially GSC with delayed current zero

is analyzed.This study may provide a reference for determining the interrupting capability of GCB for GSC.

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