Research and Implementation of Partial Discharge in HV Switchgear Using TEV Sensor

HUANG Shilong; WANG Xiaohui; GUO Xumin; LI Yansong; ZHAO Tao; LIU Yunpeng

doi:10.13296/j.1001-1609.hva.2016.10.004

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Research and Implementation of Partial Discharge in HV Switchgear Using TEV Sensor

更新时间：2025-04-26

- Research and Implementation of Partial Discharge in HV Switchgear Using TEV Sensor
- High VoltageApparatus Vol. 52, Issue 10, Pages: 19-26(2016)
- 作者机构：
  
  1. 华北电力大学河北省输变电设备安全防御重点实验室
  2. 河南省电力公司
  3. 汕头市供电局
  4. 江苏省电力公司检修分公司无锡分部
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.10.004
  CLC： TM591
- Published：2016
- 稿件说明：
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[1]黄世龙,王晓辉,郭旭敏,李岩松,赵涛,刘云鹏.采用TEV传感器的开关柜局部放电检测技术研究与实现[J].高压电器,2016,52(10):19-26.

HUANG Shilong, WANG Xiaohui, GUO Xumin, et al. Research and Implementation of Partial Discharge in HV Switchgear Using TEV Sensor[J]. High voltageapparatus, 2016, 52(10): 19-26.
[1]黄世龙,王晓辉,郭旭敏,李岩松,赵涛,刘云鹏.采用TEV传感器的开关柜局部放电检测技术研究与实现[J].高压电器,2016,52(10):19-26. DOI： 10.13296/j.1001-1609.hva.2016.10.004.

HUANG Shilong, WANG Xiaohui, GUO Xumin, et al. Research and Implementation of Partial Discharge in HV Switchgear Using TEV Sensor[J]. High voltageapparatus, 2016, 52(10): 19-26. DOI： 10.13296/j.1001-1609.hva.2016.10.004.

摘要

分析了开关柜内发生局部放电时柜体表面产生暂态地电压原理及TEV传感器设计原理。依据设计原理研制了一种TEV传感器

运用TEV传感器对3种典型开关柜缺陷模型进行了试验研究

并对放大检波前后的TEV信号进行了分析。基于所设计的TEV传感器、放大检波电路以及超声波法研制了一套开关柜局部放电检测装置

并运用该装置对多个变电站进行了实测。结果表明:TEV原始信号幅值低于100 m V

能量分布在3

00 MHz之间;所设计的放大检波电路提高了原始TEV信号的信噪比

降低了采集难度

试验研究和现场测试验证了该套检测装置的有效性。

Abstract

The mechanism of transient earth voltages（TEV）aroused by partial discharge in switchgears and the design mechanism of the TEV sensor are analyzed

the TEV sensor is designed according to its design mechanism and is used to record the TEV information corresponding to three typical PD models in HV switchgears. The original and after-amplifying-modulating TEV signal is analyzed. Detection system is developed combining with TEV sensor

amplifier demodulation and AE method. The system has been tested in several substations. The results show that

the amplitude of TEV original signal is lower than 100 m V

the energy distribution is lied in the frequency of3 MHz to 200 MHz. The designed amplification demodulation circuit has improved the SNR and reduced the difficulty of collecting:Experimental research and field application verify the effectiveness of the system.

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