Comprehensive On-line Detection of Partial Discharge in Capacitive Power Equipment by Integration of HF and UHF

CHEN Jun; LIU Weidong; GU Le; HUANG Huihong; JIANG Hanru; SU Yangping

doi:10.13296/j.1001-1609.hva.2018.07.026

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Comprehensive On-line Detection of Partial Discharge in Capacitive Power Equipment by Integration of HF and UHF

更新时间：2025-04-26

- Comprehensive On-line Detection of Partial Discharge in Capacitive Power Equipment by Integration of HF and UHF
- High VoltageApparatus Vol. 54, Issue 7, Pages: 195-199(2018)
- 作者机构：
  
  1. 广州供电局有限公司
  2. 清华大学电机系电力系统及发电设备控制与仿真国家重点实验室
  3. 湖南电力电瓷电器有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.07.026
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]陈俊,刘卫东,顾乐,黄慧红,蒋汉儒,苏阳平.电容式电力设备局部放电高频和特高频综合在线检测[J].高压电器,2018,54(07):195-199.

CHEN Jun, LIU Weidong, GU Le, et al. Comprehensive On-line Detection of Partial Discharge in Capacitive Power Equipment by Integration of HF and UHF[J]. High voltageapparatus, 2018, 54(7): 195-199.
[1]陈俊,刘卫东,顾乐,黄慧红,蒋汉儒,苏阳平.电容式电力设备局部放电高频和特高频综合在线检测[J].高压电器,2018,54(07):195-199. DOI： 10.13296/j.1001-1609.hva.2018.07.026.

CHEN Jun, LIU Weidong, GU Le, et al. Comprehensive On-line Detection of Partial Discharge in Capacitive Power Equipment by Integration of HF and UHF[J]. High voltageapparatus, 2018, 54(7): 195-199. DOI： 10.13296/j.1001-1609.hva.2018.07.026.

摘要

文中提出了电容式电力设备局部放电的UHF和HFCT综合检测

既具有UHF方法的抗电磁干扰能力和定位能力

又具有HFCT方法的局部放电量估计的能力。实验结果显示:局部放电的HFCT的测量脉冲幅值和局部放电量具有较好的线性关系

可进行局部放电量标定和估计;以局部放电的UHF信号为时间参考

对HFCT信号进行平均降噪

可以有效提高信噪比

更好满足局部放电量估计的需求。

Abstract

For on-line detection of partial discharges（PD）in capacitive power equipment

it is proposed in this pa-per the integration of UHF and HFCT PD measurement which brings the advantage of UHF method of anti-electro-magnetic interference and PD location as well as the advantage of HFCT method of PD quantity estimation. It is ex-perimentally showed that there is a nearly liner relationship between the amplitudes of the HFCT PD pulses and thePD quantities

therefore the HFCT PD pulses can be calibrated for PD quantity estimation. Mean noise reducing isinvestigated for reducing the noise of the HFCT signals and then for better PD quantity estimation. Based on the timereferance of the UHF pulses

the HFCT signals are averaged and its signal noise ratio（SNR）can be improved.

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