电器与能效管理技术 ›› 2020, Vol. 0 ›› Issue (12): 22-27.doi: 10.16628/j.cnki.2095-8188.2020.12.004

• 研究与分析 • 上一篇    下一篇

开关柜局部放电信号抗干扰算法研究

侯春光, 张润奇, 曹云东, 高有华   

  1. 沈阳工业大学 电器新技术与应用研究所,辽宁 沈阳 110870
  • 收稿日期:2020-09-27 出版日期:2020-12-30 发布日期:2021-01-05
  • 作者简介:侯春光(1978—),男,副教授,研究方向为数字化电网、电力设备状态监测、配电设备智能化、人工智能。|张润奇(1995—),男,硕士研究生,研究方向为电器及其控制。|曹云东(1963—),男,教授,研究方向为现代电器设计理论及应用、电器智能化。

Research on Anti-Interference Algorithm of Partial Discharge Signal of Switch Cabinet

HOU Chunguang, ZHANG Runqi, CAO Yundong, GAO Youhua   

  1. Institute of Electrical New Technology and Application,Shenyang University of Technology,Shenyang 110870,China
  • Received:2020-09-27 Online:2020-12-30 Published:2021-01-05

摘要:

开关柜局部放电检测是对其绝缘性能分析的重要手段之一。超高频检测以其良好的灵敏性和抗干扰能力,成为局部放电检测主要方式,但分布在超高频检测范围内的周期性窄带干扰和方波干扰无法得到有效抑制。对含有周期性窄带干扰和方波干扰的超高频局部放电信号进行分析,提出一种基于互相关函数和波形形态参数的抗干扰算法。实验结果表明,经过抗干扰算法计算后,周期性窄带干扰和方波干扰被有效滤除,证明所提方法在超高频局部放电检测中具有良好的抗干扰效果。

关键词: 开关柜, 局部放电, 超高频, 抗干扰, 互相关函数, 波形形态参数

Abstract:

Partial discharge detection of switchgear is one of the important means for analyzing its insulation performance.UHF detection has become the main method of partial discharge detection due to its good sensitivity and anti-interference ability.However,the periodic narrowband interference and square wave interference distributed in the UHF detection range can not be effectively suppressed.This paper analyzes the UHF partial discharge signal containing periodic narrowband interference and square wave interference,and proposes an anti-jamming algorithm based on cross-correlation function and waveform morphological parameters.The experimental results show that after the anti-jamming algorithm is calculated,the periodic narrowband interference and square wave interference are effectively filtered out,which proves that this method has a good anti-interference effect in UHF partial discharge detection.

Key words: switchgear, partial discharge, UHF, anti-interference, cross-correlation function, waveform morphological parameters

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