Investigation and Analysis of a Three Phase Current Unbalance Phenomenon in Thermal Power Plant

JIN Bai-rong; LI Dian

doi:10.14044/j.1674-1757.pcrpc.2012.01.016

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Investigation and Analysis of a Three Phase Current Unbalance Phenomenon in Thermal Power Plant

更新时间：2024-09-14

- Investigation and Analysis of a Three Phase Current Unbalance Phenomenon in Thermal Power Plant
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 33, Issue 1, Pages: 73-77(2012)
- 作者机构：
  
  绍兴电力局
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2012.01.016
  CLC： TM727.3
- Published：2012，
- 稿件说明：
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[1]金百荣,李电.一起热电厂三相电流不平衡现象调查分析[J].电力电容器与无功补偿,2012,33(01):73-77.

JIN BAI-RONG, LI DIAN. Investigation and Analysis of a Three Phase Current Unbalance Phenomenon in Thermal Power Plant. [J]. Power capacitor & reactive power compensation, 2012, 33(1): 73-77.
[1]金百荣,李电.一起热电厂三相电流不平衡现象调查分析[J].电力电容器与无功补偿,2012,33(01):73-77. DOI： 10.14044/j.1674-1757.pcrpc.2012.01.016.

JIN BAI-RONG, LI DIAN. Investigation and Analysis of a Three Phase Current Unbalance Phenomenon in Thermal Power Plant. [J]. Power capacitor & reactive power compensation, 2012, 33(1): 73-77. DOI： 10.14044/j.1674-1757.pcrpc.2012.01.016.

摘要

介绍了一起热电厂因线路割接后频繁出现三相电流不平衡现象

并根据电能质量在线监测系统历史数据

确认异常原因为上级电网电气化铁道负荷产生的负序电流引起

显示出电铁负荷造成的负序电流污染影响范围十分深远

发电机对系统负序电压十分敏感。

Abstract

A three phase current unbalance phenomenon after replacement of power line in a thermal power plant is introduced.Based on the historical data of on-line power quality monitoring system

it is confirmed that the abnormal phenomenon is caused by the negative sequence current produced by electric railway load from upper power grid;it is shown that the pollution influence of negative sequence current produced by electric railway load is very wide

and the generator is very sensitive to negative sequence voltage.

关键词

发电机电气化铁道负序电流三相电流不平衡

Keywords

generatorelectric railwaynegative sequence currentthree phase current unbalance

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