Overheat Defect Analysis and Treatment on Electromagnetic Unit of 500 kV CVT

QIAO Yajun; LIN Qixiong; LIN Libo

doi:10.14044/j.1674-1757.pcrpc.2015.04.013

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Overheat Defect Analysis and Treatment on Electromagnetic Unit of 500 kV CVT

更新时间：2024-09-14

- Overheat Defect Analysis and Treatment on Electromagnetic Unit of 500 kV CVT
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 36, Issue 4, Pages: 61-63(2015)
- 作者机构：
  
  广州供电局
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2015.04.013
  CLC： TM451
- Published：2015，
- 稿件说明：
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[1]乔亚军,林其雄,林李波.500kV CVT电磁单元过热缺陷分析与处理[J].电力电容器与无功补偿,2015,36(04):61-63+79.

QIAO YAJUN, LIN QIXIONG, LIN LIBO. Overheat Defect Analysis and Treatment on Electromagnetic Unit of 500 kV CVT. [J]. Power capacitor & reactive power compensation, 2015, 36(4): 61-63.
[1]乔亚军,林其雄,林李波.500kV CVT电磁单元过热缺陷分析与处理[J].电力电容器与无功补偿,2015,36(04):61-63+79. DOI： 10.14044/j.1674-1757.pcrpc.2015.04.013.

QIAO YAJUN, LIN QIXIONG, LIN LIBO. Overheat Defect Analysis and Treatment on Electromagnetic Unit of 500 kV CVT. [J]. Power capacitor & reactive power compensation, 2015, 36(4): 61-63. DOI： 10.14044/j.1674-1757.pcrpc.2015.04.013.

摘要

通过红外测温发现电容式电压互感器电磁单元异常发热后

对其进行检查发现中间变压器端子盒存在进水、锈蚀现象

二次端子绝缘电阻降低。通过结合现场情况、仿真分析、试验等方法

发现设备密封性能不良主要由密封胶条安装质量不良与密封盖板受力不均两个原因造成。针对缺陷原因

制定了排除同类设备隐患、改进设备密封结构、加强运行监测与设备验收等措施

有效保证设备安全稳定运行。

Abstract

The electromagnetic unit of capacitor voltage transformer is checked by the infrared temperature measurement after its abnormal heat and found such circumstance as water penetration and rust in the intermediate transformer

dielectric resistance reduction of secondary terminal. It is found through site situation

simulation analysis and test etc

that the weak sealing is due to bad installation quality of the sealing strip and uneven force of the sealing cover. As for the reason of the defects

such effective measures as eliminating hidden danger of similar equipment

improving the sealing structure of equipment

strengthening operation monitoring and equipment acceptance are formulated

which assures effectively safe and stable operation of equipment.

关键词

电容式电压互感器（CVT）红外测温中间变压器密封性能

Keywords

capacitor voltage transformer（CVT）infrared temperature measurementintermediate transformersealing performance

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Application of Infrared Temperature-measuring Technology in Fault Diagnosis of Capacitor Voltage Transformer

Study on Dielectric Loss of Intermediate Transformer of CVT

Analysis and Processing on Two Overheat Defects of Capacitor Voltage Transformer Electromagnetic Unit

Test Method on Site of Dielectric Loss for CVT

Influence of the Temperature Changes on CVT′s Accuracy

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Maintenance Company of the Luoyang Electric Power Company

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