復合絕緣子帶電檢測技術研究及應用現狀
李世林1，李特2，張湘3
1 永嘉縣供電局，浙江 永嘉 325100； 2 浙江省電力公司電力科學研究院，浙江 杭州 310014； 3 自貢電業局，四川 自貢 643000
摘 要：隨著復合絕緣子在電力系統中的廣泛應用，其引發的事故逐漸增加，通過帶電檢測技術實時檢測絕緣子狀態顯得極為重要?？偨Y了復合絕緣子憎水性和局部缺陷的帶電檢測技術，包括憎水性指示函數法、紅外法等方法，對各種技術的檢測原理、適用范圍及優缺點進行了對比分析，在此基礎上，介紹了復合絕緣子帶電檢測前沿技術。結果表明，憎水指示函數法在特征量的選擇和提取等方面尚需進一步研究；電場法適用于高電壓等級絕緣子狀態檢測；光纖傳感器法能發現芯棒局部缺陷；激光誘導熒光法適用面廣、檢測距離遠，值得進行深入研究并應用于工程實際。
關鍵詞：復合絕緣子；帶電檢測；局部缺陷；憎水性
中圖分類號：TM855 文獻標識碼：A 文章編號：1007-3175(2013)06-0007-04
Research and Application Status of Live Detection Technique for Composite Insulator
LI Shi-lin1, LI Te2, ZHANG Xiang3
1 Yongjia Power Supply Bureau, Yongjia 325100, China; 2 Z(P)EPC Electric Power Research Institute, Hangzhou 310014, China; 3 Zigong Electric Bureau, Zigong 643000, China
Abstract: With the increasing application of composite insulators in power system, the faults caused by composite insulator defects raise gradually in recent years, so using live detection techniques to detect the conditions of composite insulators is vital to assure the safety of transmission line. This paper summarized the live detection techniques of hydrophobicity and local defects of composite insulators, including the hydrophobicity function, infrared image and so on. Analysis was made to the detection principle, application scope and merits and demerits of these methods. On this basis, introduction was made to the advanced technologies of composite insulator live detection. The results show that there is a need for further research on the choosing and extracting characteristic parameters of hydrophobicity function method; the electric field method is suitable for high-voltage level power lines; the optical fiber sensor method can detect local defects in time; the laser-induced fluorescence (LIF) method has advantages such as good adaptability and large distance detecting ability, which are worthy of further study and applied to the field. Key words: composite insulator; live detection; local defect; hydrophobicity
參考文獻
[1] 王少華，葉自強，羅盛.500kV復合絕緣子斷裂機理及檢測方法[J].中國電力，2011，44(8)：19-21．
[2] Larsson A，Roslund A，Kroll S，et al.In-Situ Diagnostics of HV Outdoor Insulators Using Laser-Induced Fluorescence Spectroscopy[J]. IEEE Transactions on Dielectrics and Electrical Insulation，2002，9(2)：274-281．
[3] 祁兵，唐良瑞，張晶.絕緣子憎水性圖像檢測方法研究[J].中國電機工程學報，2008，28(31)：120-124.
[4] Berg M, Thottappillil R, Scuka V.Hydrophobicity estimation of HV polymeric insulating materials——Development of a digital image processing method[J].IEEE Transactions on Dielectrics and Electrical Insulation,2001, 8(6)：1098-1107.
[5] Chen Xiujuan, Li Chengrong, Huang Xingquan,etal.On-line estimating the level of hydrophobicity of composite insulators using the digital images[C]//Electrical Insulation Conference and Electrical Manufacturing Expo, 2005．
[6] 宋偉，趙林杰，李成榕，等.復合絕緣子在線檢測技術的發展[J].高電壓技術，2005，31(5)：28-30.
[7] Li Ming, Li Chengrong, Chen Yangchun.The improvement on the measuring precision of detecting fault composite insulators by using electric field mapping[C]//IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2005．
[8] Gubanski S M, Dernfalk A, Andersson J, et al.Diagnostic Methods for Outdoor Polymeric Insulators[J].IEEE Transactions on Dielectrics and Electrical Insulation, 2007, 14(5)：1065-1080．
[9] Shaffner D H，Ruff D L，Vaillancourt G H.Experience with a composite insulator testing instrument based on the electric field method[C]//The 9th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings, 2000.
[10] 郭琳，孫茁，劉萬獻，等.電場法檢測復合絕緣子的實驗研究[J].河南電力，2003，15(3)：11-14．
[11] Chen Yangchun, Li Chengrong.Online detecting composite insulators by two dimensions electric field distribution[C]//IEEE International Symposium on Electrical Insulation, 2006.
[12] 程養春，李成榕，王偉，等.水分和污穢對電場法在線檢測合成絕緣子的影響[J].高電壓技術，2001，27(6)：14-15．
[13] 魏遠航，陳潤華.高壓輸電線路復合絕緣子發熱機理的研究[J].高電壓技術，2007，33(5)：25-28．
[14] 蔡煒，羅兵，孟剛，等.基于光傳感復合絕緣子智能監測技術探討[J].電瓷避雷器，2011(3)：1-5．
[15] Qaddoumi N，El-Hag A，Hosani M，et al.Detecting defects in outdoor non-ceramic insulators using near-field microwave non-destructive testing[J]．IEEE Transactions on Dielectrics and Electrical Insulation，2010，17(2)：402-407．
