高壓電機定子繞組絕緣薄弱點定位方法的研究
吳磊1,莫岳平1,龔維明2
(1 揚州大學(xué) 水利與能源動力工程學(xué)院,江蘇 揚州 225127;
2 江蘇省江都水利工程管理處,江蘇 揚州 225200)
摘 要:針對現(xiàn)有局部放電檢測法不能解決高壓電機定子繞組絕緣薄弱點的定位問題,研究了絕緣薄弱點在局放下產(chǎn)生電場信號的特點,設(shè)計了手持式局放定位探測器。通過與局放儀配合使用,有效解決了高壓電機定子繞組絕緣薄弱點定位問題。試驗結(jié)果表明:該裝置能準確定位電機定子端部的絕緣薄弱點位置,從而避免電機絕緣故障的進一步擴大。
關(guān)鍵詞:高壓電機;局部放電;絕緣薄弱點定位;定位探測器
中圖分類號:TM305.2 文獻標識碼:A 文章編號:1007-3175(2016)01-0044-05
Research on Positioning Method of High-Voltage Motor Stator Winding Insulation Vulnerabilities
WU Lei1, MO Yue-ping1, GONG Wei-ming2
(1 School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China;
2 Jiangdu Water Control Project Management Office of Jiangsu Province, Yangzhou 225200, China)
Abstract: In allusion to the problem that the existing partial discharge detection method cannot locate the motor stator winding insulation vulnerabilities, this paper researched the winding insulation vulnerabilities which produced an electric field under the partial discharge signals and designed a handheld partial discharge positioning detector. Cooperated with the partial discharge detector, the positioning problem of high-voltage motor stator winding insulation vulnerabilities could be solved effectively. The experimental results show that the detector can accurately locate the insulation vulnerabilities position at motor stator ends, so as to reduce the risk of motor problems due to the insulation fault.
Key words: high-voltage motor; partial discharge; insulation vulnerabilities positioning; position detector
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