Distribution of Electric Field and Optimization of Anti-pollution Flash Coating Parameters for Factory-Composited Insulators

doi:10.11930/j.issn.1004-9649.201805203

Abstract

Abstract: In this paper, the distribution of electric field of factory- composited DC insulators under different coating thicknesses and coating processes was simulated on the basis of finite element method for the constant electric field simulation. The distributions of electric field of the insulators including without RTV coating coated insulator, fully RTV coating coated insulator, partially RTV coating coated insulator and different RTV coating thickness insulator were obtained through simulation analysis. The calculated results show that the maximum electric field strength around the pin (coating edge) will not exceed the corona onset field strength in the air both for factory-composited porcelain and glass insulators when the RTV coating thickness is not less than 0.3 mm and the coat completely covers the surface of the insulator. While the electric field strength at the edge of the steel foot is very high when coating blank exists near the pin. The results in this paper provide guidance for optimizing the parameters of the anti-fouling flash coating of factory-composited insulators.

Key words: factory-composited insulators, RTV coating, coverage range, coating blank, electric field strength

CLC Number:

TM216

WU Wenhua, ZHANG Rui, YUAN Jincan, WU Guangya, ZHANG Qin, YANG Binzhong, SHEN Yamei. Distribution of Electric Field and Optimization of Anti-pollution Flash Coating Parameters for Factory-Composited Insulators[J]. Electric Power, 2019, 52(1): 88-95.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201805203

https://www.electricpower.com.cn/EN/Y2019/V52/I1/88

References 20

[1]	宿志一, 李庆峰. 中国电网防污闪措施的回顾和总结[J]. 电网技术, 2010, 34(12):124-130 SU Zhiyi, LI Qingfeng. Historical review and summary on measures against pollution flashover occurred in power grids in China[J]. Power System Technology, 2010, 34(12):124-130
[2]	陈原, 崔江流, 姚文军, 等. 电力系统防污闪现状与技术政策分析[J]. 中国电力, 2004, 37(2):97-101 CHEN Yuan, CUI Jiangliu, YAO Wenjun, et al. Analysis on present status and technology policy of anti-contamination-flashover in power system[J]. Electric Power, 2004, 37(2):97-101
[3]	贾志东, 陆海, 胡亚荣, 等. 高湿气候下RTV防污闪涂料的运行特性分析[J]. 电网技术, 2014, 38(8):2291-2297 JIA Zhidong, LU Hai, HU Yarong, et al. Analysis of operating performance of RTV coating used in areas with humid climate[J]. Power System Technology, 2014, 38(8):2291-2297
[4]	高海峰, 贾志东, 关志成. 运行多年RTV涂料绝缘子表面涂层老化分析研究[J]. 中国电机工程学报, 2005, 25(9):158-163 GAO Haifeng, JIA Zhidong, GUAN Zhicheng. Aging study on RTV coating covered on insulators and energized for many years[J]. Proceedings of the CSEE, 2005, 25(9):158-163
[5]	陈原, 张章奎, 岳乔. 以RTV涂料作为永久性反污措施的可行性研究[J]. 华北电力技术, 2001(12):3-4, 8 CHEN Yuan, ZHANG Zhangkui, YUE Qiao. Feasibility study on using RTV coating as permanent anti-contamination-flashover measure[J]. North China Electric Power, 2001(12):3-4, 8
[6]	陈原, 吴光亚, 叶廷路, 等. 发展工厂复合化绝缘子提高特高压电网配置质量[J]. 中国电力, 2017, 50(8):1-15 CHEN Yuan, WU Guangya, YE Tinglu, et al. Development of factory-composited insulators for improving UHV grid configuration quality[J]. Electric Power, 2017, 50(8):1-15
[7]	沈其荣, 范建二, 李伟. 防止盘形悬式绝缘子复合化后冲击过电压性能下降措施探讨[C]//宁波:2015输变电年会, 2015:419-422.
[8]	高海峰, 贾志东, 关志成, 等. 运行多年RTV涂料绝缘子防污性能的研究[J]. 中国电力, 2004, 37(12):22-26 GAO Haifeng, JIA Zhidong, GUAN Zhicheng, et al. Study on ability of antipollution flashover of aging RTV coated insulators[J]. Electric Power, 2004, 37(12):22-26
[9]	蓝磊, 王汉良, 文习山, 等. 高温硫化硅橡胶加速电晕老化试验分析及其寿命预测[J]. 高电压技术, 2012, 38(4):782-787 LAN Lei, WANG Hanliang, WEN Xishan, et al. Accelerated corona aging tests analysis and lifetime prediction of HTV silicone rubber[J]. High Voltage Engineering, 2012, 38(4):782-787
[10]	司马文霞, 杨庆, 孙才新, 等. 基于有限元和神经网络方法对超高压合成绝缘子均压环结构优化的研究[J]. 中国电机工程学报, 2005, 25(17):115-120 SIMA Wenxia, YANG Qing, SUN Caixin, et al. Optimization of corona ring design for EHV composite insulator using finite element and neural network method[J]. Proceedings of the CSEE, 2005, 25(17):115-120
[11]	王秋莎, 律方成, 刘云鹏, 等. 电晕对室温硫化硅橡胶憎水性的影响研究[J]. 华北电力大学学报(自然科学版), 2010(4):14-17 WANG Qiusha, LV Fangcheng, LIU Yunpeng, et al. Study on the influence of corona on the hydrophobicity of RTV silicon rubber[J]. Journal of North China Electric Power University(Natural Science Edition), 2010(4):14-17
[12]	KUMAGAI Seiji, YOSHIMURA Noboru. Hydrophobic transfer of RTV silicone rubber aged in single and multiple environmental stresses and the behavior of LMW silicone fluid[J]. IEEE Transactions on Power Delivery, 2003, 18(2):506-516.
[13]	JAHROMI A N, CHERNEY E A, JAYARAM S H, et al. Aging characteristics of RTV silicone rubber insulator coatings[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(2):444-452.
[14]	DEVENDRANATH D, ARAVIND K A, RAMULU A, et al. Accelerated-ageing test for RTV-coated insulators:Analysis of electrical and material properties[J]. IEEE Proceedings Generation, Transmission and Distribution, 2005, 152(5):635-644.
[15]	CHO Hiroaki, ASHIDA Yasunori, NAKAMURA Shuhei, et al. Improvement of heat-resistance of RTV silicone with reduced environmental impact by loading selective fillers elastomer[J]. Journal of the Adhesion Society of Japan, 2012, 48(7):237-247.
[16]	ALI M, HACKAM R. Effects of saline water and temperature on surface properties of HTV silicone rubber[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(5):1368-1378.
[17]	ALI M, HACKAM R. Recovery of hydrophobicity of HTV silicone rubber after accelerated aging in saline solutions[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2009, 16(3):842-852.
[18]	绝缘子用常温固化硅橡胶防污闪涂料:DL/T 627-2012[S].
[19]	郝艳捧, 熊国锟, 刘芹, 等. 基于有限元法的染污直流支柱复合绝缘子伞裙参数优化[J]. 中国电机工程学报, 2013, 33(2):183-190 HAO Yanpeng, XIONG Guokun, LIU Qin, et al. Optimization of shed parameters of polluted DC post composite insulators based on finite element method[J]. Proceedings of the CSEE, 2013, 33(2):183-190
[20]	田冀焕, 沙彦超, 周远翔, 等. 800 kV等级高压隔离开关的交、直流电场仿真计算[J]. 高电压技术, 2011, 37(5):1216-1223 TIAN Jihuan, SHA Yanchao, ZHOU Yuanxiang, et al. Simulation of AC and DC electric field for 800 kV grade high voltage disconnector[J]. High Voltage Engineering, 2011, 37(5):1216-1223