On-line Monitoring Method for Inter-turn Short Circuit Fault of Dry-type Air-core Reactor Based on Power Factor Variation

ZHAO Chunming; AO Ming; WANG Yonghong; MENG Zihe

doi:10.14044/j.1674-1757.pcrpc.2020.03.015

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On-line Monitoring Method for Inter-turn Short Circuit Fault of Dry-type Air-core Reactor Based on Power Factor Variation

更新时间：2024-09-14

- On-line Monitoring Method for Inter-turn Short Circuit Fault of Dry-type Air-core Reactor Based on Power Factor Variation
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 3, Pages: 87-93(2020)
- 作者机构：
  
  1. 国网吉林省电力有限公司电力科学研究院
  2. 哈尔滨理工大学电气与电子工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.03.015
  CLC： TM47
- Published：2020，
- 稿件说明：
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[1]赵春明,敖明,王永红,孟子贺.基于功率因数变化量的干式空心电抗器匝间短路故障在线监测方法[J].电力电容器与无功补偿,2020,41(03):87-93.

ZHAO CHUNMING, AO MING, WANG YONGHONG, et al. On-line Monitoring Method for Inter-turn Short Circuit Fault of Dry-type Air-core Reactor Based on Power Factor Variation. [J]. Power capacitor & reactive power compensation, 2020, 41(3): 87-93.
[1]赵春明,敖明,王永红,孟子贺.基于功率因数变化量的干式空心电抗器匝间短路故障在线监测方法[J].电力电容器与无功补偿,2020,41(03):87-93. DOI： 10.14044/j.1674-1757.pcrpc.2020.03.015.

ZHAO CHUNMING, AO MING, WANG YONGHONG, et al. On-line Monitoring Method for Inter-turn Short Circuit Fault of Dry-type Air-core Reactor Based on Power Factor Variation. [J]. Power capacitor & reactive power compensation, 2020, 41(3): 87-93. DOI： 10.14044/j.1674-1757.pcrpc.2020.03.015.

摘要

干式空心电抗器匝间短路故障频发

现有的监测方法存在准确度低

可靠性差及成本高等问题。为此

提出了一种基于功率因数变化量的匝间短路故障在线监测方法。建立了匝间短路故障电抗器的电路模型

在不同位置数值计算了故障电抗器电气参数的变化量。在此基础上

确定了以功率因数为被监测量

并采用谐波分析法求取功率因数

最后搭建了试验平台进行试验研究。研究结果表明

匝间短路故障后

总电流变化很小

功率因数明显变大

各种电气参数的变化量均与短路位置有关。试验结果与理论分析结果相一致

验证了监测方法的正确性和有效性。

Abstract

As for the frequent occurrence of inter-turn short circuit fault of dry dry-type air-core reactor

the existing monitoring method has such problem as low accuracy

poor reliability and high cost.Therefore

a kind of method of inter-turn short circuit on-line monitoring based on the variation of power factor is proposed.A circuit model for an inter-turn short circuit is established and electrical parameter variation of the faulty reactor at different a numerical valued is calculated and

on this basis

the power factor is determined as the monitored quantity and power factor is obtained by the use of harmonic analysis is obtained and

finally

the test platform is set up for the test study.It is shown by the study result after the short circuit fault the total current becomes small and power factor becomes big remarkably.The variation of various electrical parameters is related to short circuit position.The test result and analysis result is identical

which verifies the correctness and effectiveness of the monitoring method.

关键词

干式空心电抗器功率因数变化量匝间短路在线监测

Keywords

dry-type air-core reactorvariation of power factorinter-turn short circuiton-line monitoring

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