Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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一起500 kV避雷器內(nèi)部受潮故障特征與診斷分析

來(lái)源:電工電氣發(fā)布時(shí)間:2022-05-28 09:28 瀏覽次數(shù):430

一起500 kV避雷器內(nèi)部受潮故障特征與診斷分析

劉昌標(biāo),張翾喆,謝斯晗,丁凱,王志
(國(guó)網(wǎng)浙江省電力有限公司超高壓分公司,浙江 杭州 311199)
 
    摘 要:金屬氧化物避雷器是電力系統(tǒng)中重要的防雷和過(guò)電壓保護(hù)設(shè)備,開(kāi)展帶電檢測(cè)可有效地保證避雷器安全穩(wěn)定運(yùn)行。介紹了一起新投運(yùn)的 500 kV 金屬氧化鋅避雷器數(shù)據(jù)異常的典型案例,通過(guò)在線監(jiān)測(cè)、帶電檢測(cè)、停電診斷性試驗(yàn)確認(rèn)了避雷器內(nèi)部存在嚴(yán)重故障,經(jīng)解體檢查發(fā)現(xiàn),避雷器上節(jié)頂部主蓋板橡膠密封圈安裝質(zhì)量不佳致使避雷器內(nèi)部發(fā)生嚴(yán)重積水受潮是避雷器內(nèi)部故障的直接原因。指出針對(duì)新投運(yùn)設(shè)備建議加強(qiáng)監(jiān)控力度,以便及時(shí)有效地發(fā)現(xiàn)潛在缺陷,避免設(shè)備發(fā)生爆炸等嚴(yán)重安全事故。
    關(guān)鍵詞:避雷器;帶電檢測(cè);受潮;內(nèi)部故障
    中圖分類(lèi)號(hào):TM862     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2022)05-0045-04
 
The Internal Damp Fault Characteristics and Diagnosis
Analysis of a 500 kV Lightning Arrester
 
LIU Chang-biao, ZHANG Xuan-zhe, XIE Si-han, DING Kai, WANG Zhi
(EHV Branch Company of State Grid Zhejiang Electric Power Company, Hangzhou 311199, China)
 
    Abstract: MOA is a piece of crucial equipment for lightning protection and overvoltage protection in power systems, and carrying out live detection could effectively ensure the safe and stable operation of the arrester.This paper introduced a typical case of abnormal data of a 500 kV metal zinc oxide arrester which was put into operation newly. It has been confirmed that there was a severe fault inside the arrester through online monitoring, live detection, and power failure diagnostic tests.After disintegration inspection, it was found that the poor installation quality of the rubber sealing ring of the main cover on the top of the upper section of the arrester caused serious water accumulation inside the arrester, and dampness is the direct cause of the internal failure of the arrester.This paper points out that it is necessary to strengthen the monitoring of the new equipment to detect potential defects in time and avoid serious safety accidents such as
equipment explosions, etc.
    Key words: lightning arrester; live detection; damp; internal fault
 
參考文獻(xiàn)
[1] 范敏, 謝佳, 姜方財(cái), 等. 基于帶電檢測(cè)技術(shù)的金屬氧化物避雷器缺陷分析[J] . 電瓷避雷器,2017(2) :64-68.
[2] 朱海貌,黃銳,夏曉波,等. 金屬氧化物避雷器帶電檢測(cè)數(shù)據(jù)異常的診斷及分析[J] . 電瓷避雷器,2012(2) :68-71.
[3] 唐夢(mèng)穎,袁超,徐偉,等. 一起 220 kV 避雷器爆炸故障分析與防范措施[J] . 電工電氣,2017(2) :36-38.
[4] 林堅(jiān), 陳長(zhǎng)杰, 孫錦, 等. 金屬氧化物避雷器帶電檢測(cè)及其故障診斷與分析[J] . 電瓷避雷器,2015(1) :144-147.
[5] 何萍,朱穎,宴年平,等. 一起金屬氧化物避雷器帶電檢測(cè)數(shù)據(jù)異常的處理及防范[J] . 江西電力,2014(4) :66-69.
[6] 秦家遠(yuǎn),劉赟,何智強(qiáng). 一起 220 kV 避雷器內(nèi)部受潮缺陷診斷分析[J]. 江西電力,2016(10) :36-38.
[7] 高峰,郭潔,徐欣,等. 交流金屬氧化物避雷器受潮與阻性電流的關(guān)系[J] . 高電壓技術(shù),2009,35(11) :2629-2633.
[8] 魏紹東, 鄧維, 雷紅才, 等.500 kV 避雷器故障模擬及缺陷檢測(cè)試驗(yàn)研究[J] . 電瓷避雷器,2019(2) :109-114.
[9] 劉佳鑫,唐佳能,馬一菱,等.500 kV 金屬氧化物避雷器安裝缺陷的試驗(yàn)及分析[J] . 電瓷避雷器,2019(2) :79-83.