微型电脑应用2023，Vol.39Issue(11)：43-47,5.
基于脉冲电流法的高压开关柜局部放电在线监测系统设计
Design of On-line Partial Discharge Monitoring System for High Voltage Switchgear Based on Pulse Current Method
摘要
Abstract
In order to monitor whether the partial discharge state of high voltage switchgear belongs to fault state,an on-line partial discharge monitoring system of high voltage switchgear based on pulse current method is designed.The UHF sensor module collects the UHF signal of the operation state of the high-voltage switchgear.After finding that the high-voltage switchgear has a partial discharge state,the pulse current information detection module is driven to collect the discharge signal of the switchgear,and the partial discharge signal is denoised and introduced into the DSP module through the partial discharge signal denoising method of the high-voltage switchgear based on the second generation wavelet denoising.The DSP module uses the discharge signal feature extraction method based on the optimal binary tree complex wavelet decomposition to extract the discharge signal features of the optimal binary tree complex wavelet decomposition,and then starts the partial discharge feature fusion recognition model based on neural network and evidence theory to judge whether the identified partial discharge belongs to fault discharge.After testing,the system can effectively monitor the partial discharge state of high voltage switchgear,and is of application value.关键词
脉冲电流法/高压开关柜/局部放电/在线检测系统/特征融合识别Key words
pulse current method/high voltage switch cabinet/local discharge/online detection system/feature fusion recogni-tion分类
信息技术与安全科学引用本文复制引用
李钊枢,林宪峰,佘佳玺,许超..基于脉冲电流法的高压开关柜局部放电在线监测系统设计[J].微型电脑应用,2023,39(11):43-47,5.基金项目
国网黑龙江省电力有限公司黑河供电公司科技资助项目(5224202000Y7) （5224202000Y7）
