Cause Analysis on Abnormal Heating of Earthing Bar of 110 kV Dry-type Air-core Reactor

XU Peng; ZHAO Wenhan; SHENG Zhilei; YAO Qingyue

doi:10.14044/j.1674-1757.pcrpc.2020.02.018

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Cause Analysis on Abnormal Heating of Earthing Bar of 110 kV Dry-type Air-core Reactor

更新时间：2024-09-14

- Cause Analysis on Abnormal Heating of Earthing Bar of 110 kV Dry-type Air-core Reactor
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 2, Pages: 99-102(2020)
- 作者机构：
  
  国网江苏省电力有限公司检修分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.02.018
  CLC： TM47
- Published：2020，
- 稿件说明：
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[1]徐鹏,赵文翰,盛智蕾,姚庆悦.110 kV干式空心电抗器接地排发热异常原因分析[J].电力电容器与无功补偿,2020,41(02):99-102+109.

XU PENG, ZHAO WENHAN, SHENG ZHILEI, et al. Cause Analysis on Abnormal Heating of Earthing Bar of 110 kV Dry-type Air-core Reactor. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 99-102.
[1]徐鹏,赵文翰,盛智蕾,姚庆悦.110 kV干式空心电抗器接地排发热异常原因分析[J].电力电容器与无功补偿,2020,41(02):99-102+109. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.018.

XU PENG, ZHAO WENHAN, SHENG ZHILEI, et al. Cause Analysis on Abnormal Heating of Earthing Bar of 110 kV Dry-type Air-core Reactor. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 99-102. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.018.

摘要

干式空心电抗器运行时产生较大漏磁场

会对周围铁磁材料以及闭合金属环路产生影响

严重时危及整个系统运行安全。以一起特高压站110 kV干式空心电抗器接地排异常发热为例

分析了涡流致热和环流致热原理

并逐步排查得出造成其发热的主要原因是在电抗器漏磁范围内存在闭合回路。提出了解决接地排异常发热的应对策略

并分别从干式空心电抗器的安装工艺、设计选材、竣工验收以及运行维护4个方面给出建议

对避免类似故障的发生具有一定的参考意义。

Abstract

The big leakage magnetic field of dry-type air-core reactor in operation will cause influence on the surround ferromagnetic material and the closed metal loop and

when serious

will endanger safe operation of the whole system.In this paper

the abnormal heating of the earthing bar of one 110 kV dry type air core reactor at one UHV substation is taken as an example so analyze the principle of heating sue to eddy current and circulation

check one by one and get the reason that the heat is due to lop circuit within the leakage magnetic of the reactor.The counter measure to solve the abnormal heating of the earthing is proposed

the suggestion is given from such four aspects as installation process

material selection

acceptance and operation & maintenance of the dry-type air-core reactor are given

which can provide a definite reference in avoiding the similar fault.

关键词

电抗器接地排发热漏磁

Keywords

reactorearthing barheatmagnetic flux leakage

references

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