高海拔地区特高压换流站大尺寸复合支柱绝缘子直流污闪特性

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摘要在海拔2 100m的国家特高压工程实验室,采用恒压升降法全面深入地研究了一大一小和一大两小伞形、6.25m（5支串联组成）绝缘高度的两种大尺寸复合支柱绝缘子的直流污闪特性。试验表明：一大两小伞形大尺寸复合支柱绝缘子的直流污闪特性优于一大一小伞形;大尺寸试品的直流污闪电压与盐密、灰密均成幂函数关系,盐密对U_50%的影响程度明显大于灰密;与短串试品相比,盐密对大尺寸试品的影响较大;随着上、下表面污秽比的增大,大尺寸试品直流污闪电压增加不超过10%;在绝缘高度6.25m范围内,直流污闪电压与复合支柱绝缘子串长呈良好线性关系,但由于试验数据存在一定的分散性,大尺寸试品线性推导值和试验值相差约15%;大尺寸试品的紫外放电光子数大于短串,同时,受污秽不均匀分布的影响,大尺寸试品的中、下部紫外光子数稍大于上部;大尺寸试品的中、下端电弧桥接现象剧烈,电弧大范围跨接更为明显。

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	李立浧

关键词 ：大尺寸, 复合支柱绝缘子, 直流污闪特性, 污秽因素, 局部放电, 沿面电弧

Abstract：In order to investigate the DC pollution flashover performance of large-size composite post insulator at high altitude, this paper presents two types of large-size composite post insulators. The insulation height of each type is 6.25m. The artificial pollution tests were carried out at high altitude areas (2 100m) in National Engineering Laboratory for Ultra High Voltage Engineering Technology (Kunming). The pollution flashover voltage U_50% was determined by the up-and-down method. The DC pollution flashover performance of large-size composite post insulator with alternating large and two small sheds design is better than that with alternating large and small sheds design. The U_50% is related to both non soluble deposit density (ESDD) and equivalent salt deposit density (NSDD) by power function, where ESDD has much more significant effects on U_50% than NSDD. Compared with the short-size specimen, ESDD impacts largely on the large-size specimen. The more uneven distribution of pollution, the higher U_50% is, but no more than 10%. Within the insulation height range of 6.25m, the relationship between the length of composite post insulator and the U_50% is linear, but the error exists due to the dispersion of test data if U_50% of the large-size specimen is directly calculated from the short-size specimen. In this paper, the error was about 15%. The ultraviolet photon number of the large-size specimen is obviously more than that of the short-size specimen. Besides, the distribution of pollution obviously affects the ultraviolet photons number. Since the contaminant on the top side surface of the large-size specimen falls on the middle and lower parts after saturated moisture, the uneven degree of pollution distribute increases, and the ultraviolet photon numbers on the middle and lower parts of the large-size specimen are greater than that on the top part. The partial discharge phenomenon on the middle and lower parts of the large-size specimen are very intense, and the arc propagates widely, even bridges couple of sheds.

Key words： Large-size composite post insulator DC pollution flashover performance pollution factors partial discharge arcs on the surfaces

收稿日期: 2014-05-13 出版日期: 2016-07-11

PACS:

TM216

基金资助:国家自然科学基金面上项目资助（51177052）

通讯作者: 郝艳捧女,1974年生,教授,博士生导师,主要研究方向为污秽、覆冰和雷电下的外绝缘特性、电力设备绝缘状态诊断和大气压介质阻挡放电等。E-mail: yphao@scut.edu.cn（通信作者）

作者简介: 谷裕男,1984年生,博士,工程师,主要研究方向为输变电设备外绝缘。E-mail: 253011633@qq.com

引用本文:

谷裕, 阳林, 张福增, 薛艺为, 郝艳捧, 李立浧. 高海拔地区特高压换流站大尺寸复合支柱绝缘子直流污闪特性[J]. 电工技术学报, 2016, 31(10): 93-101. Gu Yu, Yang Lin, Zhang Fuzeng, Xue Yiwei, Hao Yanpeng, Li Licheng. DC Pollution Flashover Performance of Ultra High Voltage Convert Stations Large-Size Composite Post Insulators at High Altitude Areas. Transactions of China Electrotechnical Society, 2016, 31(10): 93-101.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I10/93

[1] 张志劲, 蒋兴良, 孙才新, 等. 染污绝缘子串直流污闪放电模型及验证[J]. 电工技术学报, 2009, 24(4): 36-41.
Zhang Zhijin, Jiang Xingliang, Sun Caixin, et al. DC pollution glashover model and its validation of polluted insulator strings[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 36-41.
[2] 张志劲, 蒋兴良, 孙才新, 等. 气压对绝缘子串流污闪特性影响[J]. 电工技术学报, 2010, 25(5): 38-43.
Zhang Zhijin, Jiang Xingliang, Sun Caixin, et al. Influence of air pressure on DC pollution flashover performance of insulator string[J]. Transactions of China Electrotechnical Society, 2010, 25(5): 38-43.
[3] 张志劲, 蒋兴良, 孙才新, 等. 低气压下绝缘子串直流污闪放电过程[J]. 电工技术学报, 2009, 24(4): 30-35, 47.
Zhang Zhijin, Jiang Xingliang, Sun Caixin, et al. DC pollution flashover process for insulator string at low air pressure[J]. Transactions of China Electro- technical Society, 2009, 24(4): 30-35, 47.
[4] 崔江流. 2001年初华北、华东和河南电网大面积污闪事故分析[J]. 电力设备, 2002, 2(4): 15-20.
Cui Jiangliu. Analysis of large area pollution flashover in North China, East China and Henan province in 2001[J]. Electrical Equipment, 2002, 2(4): 15-20.
[5] 宿志一. ±500kV葛南直流输电设备外绝缘运行概况及分析[J]. 电网技术, 2001, 25(2): 57-60.
Su Zhiyi. Operation and analysis of external insul- ation of ±500kV Ge-Nan transmission equipments[J]. Power System Technology, 2001, 25(2): 57-60.
[6] Baker A C, Zaffanella L E, Anzivino L D, et al. Contamination performance of HVDC station post insulators[J]. IEEE Transactions on Power Delivery, 1988, 3(4): 1968-1975.
[7] Naito K, Kunieda S, Hasegawa Y, et al. DC contamination performance of station insulators[J]. IEEE Transactions on Electrical Insulation, 1988, 23(6): 1015-1023.
[8] Seta T, Nagai K, Naito K, et al. Studies on performance of contaminated insulators energized with DC voltages[J]. IEEE Transactions on Power Apparatus and Systems, 1981, 100(2): 518-527.
[9] Naito K, Matsuoka R, Ito S, et al. An investigation of the horizontally mounted insulators for HVDC stations[J]. IEEE Transactions on Power Delivery, 1989, 4(1): 653-666.
[10] Sundararajan R, Gorur R. Pollution performance of DC station post insulator using a dynamic model[C]// IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Pocono Manor, 1993: 592-597.
[11] Fazelian M, Wu C Y, Cheng T C, et al. A study of the profile of HVDC insulators[J]. IEEE Transactions on Electrical Insulation, 1989, 24(1): 119-125.
[12] Wu D, Hartings R, Astrom U, et al. The performance of station post insulators for UHVDC applications[C]// Proceedings of the 10th International Symposium on High Voltage Engineering, Montreal, Canada, 1997, 3: 1-4.
[13] Wu D, Hartings R, Astrom U. The performance of station post insulators in uneven rain under DC voltage[C]//Proceedings of the 9th International Symposium on High Voltage Engineering, Graz, Austria, 1995: 32-37.
[14] 中国电力科学研究院. ±500kV直流输电外绝缘特性研究系列报告[R]. 北京: 中国电力科学研究院, 2004.
[15] 范建斌, 宿志一, 李武峰, 等. 高压直流支柱绝缘子和套管伞形结构研究[J]. 中国电机工程学报, 2007, 27(21): 1-6.
Fan Jianbin, Su Zhiyi, Li Wufeng, et al. Research on profiles of HVDC post insulator and bushing[J]. Proceedings of the CSEE, 2007, 27(21): 1-6.
[16] 唐炬, 谢军, 孙才新, 等. 直流电压下支柱绝缘子在高海拔淋雨状态下的放电特性[J]. 高电压技术, 1989, 15(4): 17-21.
Tang Ju, Xie Jun, Sun Caixin. DC flashover characterisitics of support insulators under wet condition at high altitude[J]. High Voltage Engin- eering, 1989, 15(4): 17-21.
[17] 孙才新, 唐炬, 谢军, 等. 在高海拔、淋雨、污秽环境中电站型支柱绝缘子的直流放电特性[J]. 电工技术学报, 1991, 6(1): 41-45, 64.
Sun Caixin, Tang Ju, Xie Jun, et al. DC discharge characteristics of substation support insulators in high altitude, rain and pollution environment[J]. Transactions of China Electrotechnical Society, 1991, 6(1): 41-45, 64.
[18] 杨皓麟, 张福增, 赵锋, 等. 高海拔地区±800kV复合支柱绝缘子直流污闪特性[J]. 高电压技术, 2009, 35(4): 749-754.
Yang Haolin, Zhang Fuzeng, Zhao Feng, et al. DC flashover performance of ±800kV composite post insulator in high altitude area[J]. High Voltage Engineering, 2009, 35(4): 749-754.
[19] 赵锋, 张福增, 杨皓麟, 等. 复合支柱绝缘子在高海拔地区直流污闪与污雨闪性能[J]. 清华大学学报(自然科学版), 2009, 49(10): 1581-1584.
Zhao Feng, Zhang Fuzeng, Yang Haolin, et al. DC pollution flashover and rain flashover performance for composite post insulators at high altitudes[J]. Tsinghua Univertigy (Science & Techlogy), 2009, 49(10): 1581-1584.
[20] 张福增, 张楚岩. 高海拔±800kV特高压直流大尺寸支柱绝缘子污闪特性试验研究[R]. 广州: 南方电网科学研究院, 2011.
[21] 张楚岩, 关志成, 张福增, 等. 换流站支柱绝缘子在高海拔地区的污秽外绝缘特性[J]. 高电压技术, 2012, 38(10): 2569-2574.
Zhang Chuyan, Guan Zhicheng, Zhang Fuzeng, et al. Pollution flashover performance of converter station post insulators at high altitude area[J]. High Voltage Engineering, 2012, 38(10): 2569-2574.
[22] 张楚岩, 张福增, 陈昌龙, 等. 高海拔地区直流特高压大尺寸复合外绝缘污闪特性研究[J]. 电工技术学报, 2012, 27(12): 20-28.
Zhang Chuyan, Zhang Fuzeng, Chen Changlong, et al. Research on pollution flashover characteristics of large-size composite outdoor insulation for UHV DC in high altitude area[J]. Transactions of China Electrotechnical Society, 2012, 27(12): 20-28.
[23] 谷裕, 郝艳捧, 薛艺为, 等. 特高压换流站复合支柱绝缘子伞伸出对其高海拔直流污闪性能的影响[J]. 中国电机工程学报, 2014, 34(15): 2478-2484.
Gu Yu, Hao Yanpeng, Xue Yiwei, et al. Influence of shed overhangs of composite post insulators in UHV convert stations on DC flashover performances at high altitude[J]. Proceedings of the CSEE, 2014, 34(15): 2478-2484.
[24] 谷裕, 郝艳捧, 张福增, 等. 沿海地区与内陆地区复合支柱绝缘子直流污闪特性比较[J]. 电网技术, 2014, 38(5): 1373-1378.
Gu Yu, Hao Yanpeng, Zhang Fuzeng, et al. Com- parison of DC flashover performances of polluted composite post insulators in coastal areas and inland areas[J]. Power System Technology, 2014, 38(5): 1373-1378.
[25] 王国利, 陆国庆, 李锐海, 等. 特高压工程技术(昆明)国家工程实验室的建设[J]. 高电压技术, 2009, 35(7): 1553-1558.
Wang Guoli, Lu Guoqing, Li Ruihai, et al. Con- struction of national engineering laboratory for UHV engineering technology (Kunming)[J]. High Voltage Engineering, 2009, 35(7): 1553-1558.
[26] 中国国家标准化管理委员会. GB/T 22707—2008 直流系统用高压绝缘子的人工污秽试验[S]. 2008.
[27] Swedish Transmission Research Institute (STRI). Hydrophobicity Classification Guide, STRI Guide 92/1[S]. 1992.
[28] 张仁豫, 关志成. 染污绝缘子在交流及正负极性直流电压作用下污闪电压差异的研究[J]. 高电压技术, 1984, 7(2): 2-8.
Zhang Renyu, Guan Zhicheng. Research of flashover voltage for contaminative insulator under AC and different polarity DC voltage[J]. High Voltage Engin- eering, 1984, 7(2): 2-8.
[29] IEC 61245—1993 Artificial pollution tests on high- voltage insulators to be used on DC systems[S]. 1993.