220 kV倒置式電流互感器金屬膨脹器噴油分析及措施
顧文雯1,柯于剛2
(1 國網(wǎng)無錫供電公司,江蘇 無錫 214061;2 國網(wǎng)江蘇省電力公司檢修分公司,江蘇 無錫 214101)
摘 要:對倒置式電流互感器運行中常見的金屬膨脹器噴油或爆炸現(xiàn)象進行了分析,指出了產(chǎn)品存在設(shè)計不合理、生產(chǎn)工藝不達標(biāo)及出廠試驗把關(guān)不嚴(yán)等問題,并針對該問題提出嚴(yán)格控制工藝標(biāo)準(zhǔn),提高出廠試驗標(biāo)準(zhǔn)等整改措施,提高了該類型倒置式電流互感器產(chǎn)品的出廠質(zhì)量,排除了該類型倒置式電流互感器運行時產(chǎn)生的安全隱患。
關(guān)鍵詞:倒置式電流互感器;油色譜分析;介質(zhì)損耗因數(shù);局部放電試驗
中圖分類號:TM452 文獻標(biāo)識碼:B 文章編號:1007-3175(2017)11-0056-03
Cause Analysis and Countermeasures of 220 kV Inverted Current Transformer Metal Expander Oil Injection
GU Wen-wen1, KE Yu-gang2
(1 State Grid Wuxi Power Supply Company, Wuxi 214061, China;
2 State Grid Jiangsu Electric Power Maintenance Branch Company, Wuxi 214101, China)
Abstract: Analysis was made to the common metal expander oil injection or explosion phenomenon in the operation of inverted current transformer. There were several problems such as unreasonable product design, substandard manufacturing technique and undetected predelivery test. In allusion to these problems, this paper proposed the strict control technological standard to improve the predelivery test standard etc countermeasures, which improves the outgoing quality of this type of inverted current transformer product and eliminates the potential safety hazard when the inverted current transformer running.
Key words: inverted current transformer; oil chromatographic analysis; dielectric loss factor; partial discharge test
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