Time-domain Anti-interference Technology for UHF PD Detection Based on Automatic Time Difference Analysis

FENG Xinyan; LI Mu; MAN Xiaokun; ZHANG Haijie; ZANG Yiming

doi:10.13296/j.1001-1609.hva.2020.08.033

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Time-domain Anti-interference Technology for UHF PD Detection Based on Automatic Time Difference Analysis

更新时间：2025-04-26

- Time-domain Anti-interference Technology for UHF PD Detection Based on Automatic Time Difference Analysis
- High VoltageApparatus Vol. 56, Issue 8, Pages: 217-223(2020)
- 作者机构：
  
  1. 国网山东省电力公司检修公司
  2. 国网山东省电力公司经济技术研究院
  3. 国网山东省电力公司建设公司
  4. 上海交通大学电气工程系
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.08.033
  CLC： TM855
- Published：2020
- 稿件说明：
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[1]冯新岩,李沐,蔄晓琨,张海杰,臧奕茗.基于自动时差分析的特高频局部放电检测时域抗干扰技术[J].高压电器,2020,56(08):217-223.

FENG Xinyan, LI Mu, MAN Xiaokun, et al. Time-domain Anti-interference Technology for UHF PD Detection Based on Automatic Time Difference Analysis[J]. High voltageapparatus, 2020, 56(8): 217-223.
[1]冯新岩,李沐,蔄晓琨,张海杰,臧奕茗.基于自动时差分析的特高频局部放电检测时域抗干扰技术[J].高压电器,2020,56(08):217-223. DOI： 10.13296/j.1001-1609.hva.2020.08.033.

FENG Xinyan, LI Mu, MAN Xiaokun, et al. Time-domain Anti-interference Technology for UHF PD Detection Based on Automatic Time Difference Analysis[J]. High voltageapparatus, 2020, 56(8): 217-223. DOI： 10.13296/j.1001-1609.hva.2020.08.033.

摘要

外部环境干扰是造成特高频在线监测系统发出虚警和漏警等错误报警信息的主要原因

制约着特高频局放检测技术的发展。针对目前特高频局部放电带电检测过程中外部放电干扰信号识别难度大、识别手段复杂等问题

文中提出了基于自动时差分析的时域抗干扰技术。利用检测传感器及背景传感器检测到的信号的时间差

通过参数设置和逻辑判断

分析其是否为干扰信号并进行滤除。在126 kV GIS试品模型上进行了验证试验

结果表明

该方法可以有效地自动滤除外部放电干扰信号

解决了特高频局放检测中抗干扰这一核心难题

具有良好的应用价值和重要的推广价值。

Abstract

Environmental interference is the major factor responsible for false alarm and missing alarm of the UHF online monitoring system

which restricts the development of UHF（partial discharge）PD detection. In order to solve the problem that external discharge interference signal is difficult to identify and the identification means is complex in current UHF PD live detection process

this paper presents a time-domain anti-interference technology based on automatic time difference analysis. The time difference between the signals of detecting sensor and background noise sensor is used

combining with parameters setting and judgment logic

to determine and filter the interference signal.Test is conducted on the 126 kV GIS model to verify this technology

and the result indicates that this technology is able to filter interference signal automatically

thus the anti-interference problem in UHF PD Detection is solved.This anti-interference technology is worthy of application and promotion.

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