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

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基于操作過(guò)電壓作用35 kV干式空心電抗器故障原因分析

來(lái)源:電工電氣發(fā)布時(shí)間:2016-11-17 14:17 瀏覽次數(shù):8
基于操作過(guò)電壓作用35 kV干式空心電抗器故障原因分析
 
張小平,劉小波,吳冬文,黃斌,吳花
(國(guó)網(wǎng)江西省電力公司檢修分公司,江西 南昌 330029)

    摘 要:結(jié)合電抗器的運(yùn)行環(huán)境、投切過(guò)程及本身材質(zhì)結(jié)構(gòu),介紹了一起35 kV 電抗器閃絡(luò)故障。通過(guò)對(duì)電抗器運(yùn)行狀態(tài)調(diào)查、故障設(shè)備檢查、試驗(yàn)以及理論仿真分析,發(fā)現(xiàn)電抗器主要故障原因是斷路器頻繁投切過(guò)電壓,在封包玻璃纖維結(jié)構(gòu)不合理的電抗器首端線圈匝間絕緣層產(chǎn)生破壞。針對(duì)本次故障問(wèn)題,提出相應(yīng)防范措施,為今后電抗器絕緣選型、運(yùn)行維護(hù)提供參考。
    關(guān)鍵詞:干式空心電抗器;故障分析;防范措施
    中圖分類號(hào):TM472     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2016)11-0031-04
 
Fault Analysis of 35 kV Dry Air Reactor Based on
Switching Overvoltage Impact
 
ZHANG Xiao-ping, LIU Xiao-bo, WU Dong-wen, HUANG Bin, WU Hua
(State Grid Jiangxi Maintenance Company, Nanchang 330029, China)

    Abstract: Combining with the operating environment of reactors, switching process and itself material structure, this paper introduced a case of 35 kV reactors lightning fault. Analysis was made to reactors running status investigation, fault equipment inspection, testing and theoretical simulation. The main fault reason of reactors was the over-voltage during frequent switching between the reactor coils, which led to the turnto-turn insulating layer damage of reactors head end coils with unreasonable package fiberglass structure. For this fault problem, this paper proposed the preventive measures, which provides references for the future reactors insulating model selection and operating maintenance.
    Key words: dry air reactor; fault analysis; preventive measures
 
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