變壓器長期充氮存放的微觀變化過程研究及質(zhì)量控制
盧慶港1,祝新建2,周化忠1,李奇1,毛華3
(1 蘇州熱工研究院有限公司,江蘇 蘇州 215004;
2 中廣核工程有限公司,廣東 臺山 529228;
3 珠海許繼電氣有限公司,廣東 珠海 519001)
摘 要: 介紹了長時間充氮存放的變壓器的處理過程,分析了氮氣中的微水對絕緣性能的影響、絕緣材料老化降解、空腔及氣泡形成等微觀變化過程。基于實際工程案例,通過試驗數(shù)據(jù)對比,驗證了微觀分析的正確性以及采取措施的有效性,為后續(xù)變壓器的充氮存放管理提供了借鑒。
關(guān)鍵詞: 充氮;微觀變化;微水;降解;空腔
中圖分類號:TM411 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2015)01-0021-05
Microcosmic Change Process Study and Quality Control of Transformer Storage with Nitrogen Filled Long Time
LU Qing-gang1, ZHU Xin-jian2, ZHOU Hua-zhong1, LI Qi1, MAO Hua3
(1 Suzhou Nuclear Power Research Institute Co., Ltd, Suzhou 215004, China;
2 China Nuclear Power Engineering Co., Ltd, Taishan 529228, China;
3 Zhuhai XJ Electric Co., Ltd, Zhuhai 519 001, China)
Abstract: Introduction was made to the process of transformer storage with nitrogen filled long time. Analysis was made to the microcosmic change process from three parts of long time storage of transformer with nitrogen, one is that minim moisture in nitrogen gas impacts on insulation performance, other one is aging and degradation of insulation and third one is that cavity and bubble turn up in transformer. This paper verified the validity of the microscopic analysis as well as the effectiveness of the actions via test data analysis, which provides practical experience for manufacturer.
Key words: nitrogen filled; microcosmic change; minim moisture; degradation; cavity
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