<dd id="mimiw"><samp id="mimiw"></samp></dd>

<address id="mimiw"><nav id="mimiw"><delect id="mimiw"></delect></nav></address>

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

    Article retrieval

    文章檢索

    一起35 kV站用變非電量保護跳閘事件分析

    來源:電工電氣發(fā)布時間:2019-07-16 14:16 瀏覽次數(shù):709
    一起35 kV站用變非電量保護跳閘事件分析
     
    張春剛,甘龍,孫西,歐陽勁松
    (云南電網(wǎng)有限責任公司昆明供電局,云南 昆明 650000)
     
        摘 要:某500 kV變電站內(nèi)35 kV站用變由于有載調(diào)壓重瓦斯繼電器誤動,造成保護裝置動作跳閘,分別從后臺機報文顯示、保護裝置信息記錄檢查、現(xiàn)場站用變油枕檢查、油樣分析、瓦斯繼電器拆卸檢查等方面全面分析非電量保護跳閘原因,確定本次跳閘是由于2號站用變有載調(diào)壓重瓦斯真空管破裂進油,導致常開觸點粘死導通引起站用變保護重瓦斯動作。提出相應預防措施,為預防類似安全隱患參考。
        關鍵詞:站用變;非電量保護;有載調(diào)壓重瓦斯;預防措施
        中圖分類號:TM407;TM773     文獻標識碼:B     文章編號:1007-3175(2019)07-0042-04
     
    A Case of Tripping Accident Analysis of 35 kV Station Transformer on Non-Electricity Protection
     
    ZHANG Chun-gang, GAN Long, SUN Xi, OUYANG Jin-song
    (Kunming Power Supply Bureau of Yunnan Power Grid Co., Ltd, Kunming 650000, China)
     
        Abstract: On account of an accident of tripping-out of protective device operation caused by misoperation of gas relay with on-load voltage regulating in a 500 kV substation, this paper comprehensively analyzed the tripping reasons of non electric quantity protection from the aspects of message display of background machine, information record and inspection of protective device, inspection of oil pillow for site substation, oil sample analysis and disassembly inspection of gas relay etc, to make sure that this tripping was caused by gas relay vacuum tube fracture and oil-taking with on-load voltage regulating in No.2 station transformer, leading to normally open contact sticking to make the gas relay action. The corresponding precautionary measures are proposed to provide references for preventing the analogy potential safety hazard.
        Key words: station transformer; non electric quantity protection; on load tap changing heavy gas; preventive measures
     
    參考文獻
    [1] 陳曉云,張偉光.220 kV變壓器重瓦斯事故分析及預防措施[J]. 電氣技術,2018,19(1):94-96.
    [2] 曹鐵山,董德,曾勇,等. 一次主變瓦斯保護誤動的原因及預防措施[J]. 電氣技術,2017,18(7):103-105.
    [3] 滿瑞. 一起220 kV電力變壓器重瓦斯誤動的事故分析及處理[J]. 變壓器,2016,53(11):61-63.
    [4] 毛知新,文勁宇. 變壓器油中溶解氣體光聲光譜檢測技術研究[J]. 電工技術學報,2015,30(7):135-143.
    [5] 安貴元,高輝,楊雪梅,等. 在線監(jiān)測在高壓電氣設備工況分析中的典型應用[J]. 電氣技術,2014,15(8):68-69.

     

    亚洲无码av成人在线,亚洲影院AV无码一区二区,亚洲无码第二页,成人无码AV网站在线观看不卡 (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })();