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요약정보
基于HHT-Prony算法的GIS局放信号检测 / GIS Partial Discharge Signal Detection Based on HHT-pronly Algorithm
Resource Type
Academic Journal
Authors
陈华冬
;
劳帮壮
;
王亚四
;
农正军
;
陈崇敬
;
CHEN Hua-dong
;
LAO Bang-zhuang
;
WANG Ya-si
;
NONG Zheng-jun
;
CHEN Chong-jing
Source
电气开关 / Electric Switcher
. 61(2):31-34
Subject
GIS
电力系统
局放信号
Prony算法
Language
Chinese
ISSN
1004-289X
Online Access
Find it @ DONGA
초록
GIS运行中发生的绝缘缺陷已严重威胁着电力系统的安全运行.GIS内可能因生产制造或长期运行中出现的潜伏性异物而导致不同程度的局部放电,长期放电会引起设备绝缘劣化,如果不能及时发现和处理,甚至会造成击穿或闪络,引发严重后果.所以,需要对局部放电进行监测.但局放信号容易受到外部信号的干扰,使得监测到的信号不准确,本文从信号去噪和识别的角度考虑,引入HHT和Prony算法.首先对监测到的局放信号进行去噪,然后对去噪的信号进行识别,与正常信号进行对比,得到局放信号的信号特征,从而进行有效的故障识别.
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