Influencing Factors of Composite Insulator and Grading Ring Surface Electric Fields in UHV AC Power Transmission Lines

doi:10.3969/j.issn.1000-7229.2013.09.009

Abstract

Abstract:

The numerical simulation study on the composite insulator and grading ring surface electric field distribution in UHV AC power transmission line has the characteristics of the various mediums, the complicated structure and the large amount of calculation. In order to assure the calculation accuracy, related influencial factors should be comprehensively analyzed to reasonably simplify the calculation model and enhance computational efficiency. A whole and a simplified 3D finite element model of double composite insulator in UHV AC transmission line was built. The influences of conductors, towers, hardware fittings, yoke plate on the composite insulator and grading ring surface electric field distribution were studied. Finally, the reasonability of the simplified model was validated. The comparison results between whole model and simplified model show that the simplification of tower is reasonable, and the simplification method that omits the hardware fittings and yoke plate is feasible, with controlling three-phase bundled conductors within a certain length. The simplified model can replace the whole model to analyze the electric field and potential distribution of the composite insulator and the electric field distribution on the grading ring surface, and it can reduce the calculation scale, as well as improve the analysis efficiency of parameters optimization for the insulators string and grading ring in UHV AC transmission lines.

Key words: UHV AC power transmission line, composite insulator, grading ring, finite element method (FEM), electric field distribution, influencial factors

HUANG Daochun, HUANG Zhengfang, ZHANG Yuan, WANG Guoli, RUAN Jiangjun, PI Weicai. Influencing Factors of Composite Insulator and Grading Ring Surface Electric Fields in UHV AC Power Transmission Lines[J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(9): 42-47.

References

［1］Huang D C, Shu Y B, Ruan J J, et al. Ultra high voltage transmission in China: Developments, current status and future prospects［J］. Proceedings of the IEEE, 2009, 97(3): 555-583.

［2］赵彪，孙河，刘姜玲.特高压交流试验示范工程的经济性［J］.电力建设，2009,30(11):24-26.

［3］Phillips A J, Kuffel J, Baker A, et al. Electric fields on AC composite transmission line insulators［J］. IEEE Transactions on Power Delivery, 2008, 23(2): 823-830.

［4］钱之银，叶自强，张宇. 北兰线500 kV合成绝缘子断串原因试验分析［J］. 高电压技术，2004，30(6)：24-26.

［5］张鸣，陈勉. 500 kV罗北甲线合成绝缘子芯棒脆断原因分析［J］. 电网技术，2003，27(12)：51-53.

［6］杨杰，吉晓波，周国华，等. 均压装置对复合绝缘子电气性能的影响［J］. 高电压技术，2004，30(2)：24-25，50.

［7］李鹏，范建斌，李光范，等. 1 000 kV级特高压交流线路绝缘子串电位分布计算和均压环设计［J］. 中国电力，2006，39(10)： 33-36.

［8］王景朝，樊宝珍，侯继勇，等. 1 000 kV输电线路绝缘子串的均压屏蔽技术［J］. 高电压技术，2007，33(12)：9-13.

［9］张子阳，赵彦珍，李华良，等. 1 000 kV交流特高压输电线路用玻璃绝缘子串电压分布特性的研究［J］. 华东电力，2007， 35(6)：29-31.

［10］邓桃，赵志刚，李鹏，等. 基于有限元方法的1 000 kV级特高压交流线路耐张串均压环优化设计［J］. 中国电力，2007， 40(12)：43-47.

［11］卞星明，张福增，王黎明，等．1 000 kV交流复合绝缘子均压环参数设计［J］. 高电压技术，2009，35(5)：980-985.

［12］焦保利，郑平，杨迎建，等. 1 000 kV特高压交流变电金具电晕特性及优化［J］. 高电压技术，2009，35(6)：1237-1242.

［13］谢天喜，刘鹏，李靖，等. 交流1 000 kV同塔双回输电线路复合绝缘子电场分布［J］. 高电压技术，2010，36(1)：224-229.

［14］冯勇，彭宗仁,，刘鹏，等. 特高压交流输电线路瓷绝缘子的均压特性［J］. 高电压技术，2010，36(1)：270-274.

[1]	BAI Hao，YUAN Zhiyong,SUN Rui,ZHANG Qiang,SHI Xuntao1BAI Hao，YUAN Zhiyong,SUN Rui,ZHANG Qiang,SHI Xuntao. Method Based on Apriori Algorithm and Convolution Neural Network for Mining Main Influencing Factors of Distribution Equipment Operation Efficiency [J]. Electric Power Construction, 2020, 41(3): 31-38.
[2]	LIN Li, ZHOU Peng, ZOU Lanqing. Assemment and Influential Factors Analysis of Power Energy Efficiency Based on New Energy Industrial Orientation [J]. Electric Power Construction, 2017, 38(1): 123-.
[3]	TANG Ke, WEN Wu, DING Junjie, ZHAN Qinghua, XIAO Wei, LIU Chao. Temperature Field Simulation of Cable Joints Based on FEM [J]. Electric Power Construction, 2016, 37(2): 145-150.
[4]	MA Huancheng, LIN Xiaohuan, CAO Wen, SHEN Wei, WANG Tong, WANG Yang. Power Frequency Electric Field Effect on Human Body in 750 kV AC Transmission Lines [J]. Electric Power Construction, 2016, 37(1): 50-55.
[5]	HUANG Chengcai, LI Yonggang. A Review of Aging Evaluation Methods for Composite Insulators [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(9): 28-34.
[6]	LIU Caolan, ZHU Kuanjun, LIU Bin, LIU Shengchun. Break Impact Influence Factors of UHV Composite Strain Insulator String [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(4): 55-58.
[7]	ZHANG Jun, WU Jinlong, LIANG Yundan, CHEN Xiaojun, YAO Weizheng. Finite Element Analysis on Insulation Structure of Modular Multi-Level Converter [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(3): 31-35.
[8]	LI Peng, WU Guangya，MA Bin, ZHU Yong, ZHANG Xiaorong, WANG Yongliang. UV Aging Test on Silicone Rubber Used for Composite Insulators in Qinghai-Tibet Project [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(3): 69-73.
[9]	JIANG Zhimin1, CHEN Tianxiang1, HAN Qiang2. Simulation Analysis of Electric Field Distribution of 220 kV Icing Composite Insulator with Four Sheds [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(11): 73-78.
[10]	NAN Jing, LI Xuelin, XU Tao, XU Zuoming, WAN Xiaodong, YAO Tao, LIU Qin, LI Jin, CAI Lin, JIA Ru. Ice Flashover Test of 750 kV Anti-Icing Composite Insulators [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(10): 47-51.
[11]	CUI Wei， DU Xiuwen， YANG Haifeng . Analysis on Influencial Factor of Power Demand Based on Principal Component Analysis [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(8): 34-39.
[12]	MI Kai, ZHANG Yongjin, LV Xindong, FAN Weidong, PAN Xiaodong. Application of Tension Composite Insulator in 750 kV Power Transmission Lines [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(2): 96-99.
[13]	. Electric Field Distribution of UHV AC Parallel Lines [J]. ELECTRIC POWER CONSTRUCTION, 2012, 33(12): 11-16.