应用电场强度等效法的特高压交流双回线路双摆防舞器电晕试验及优化设计  

Equivalent Electric Field Strength Method used in Corona Test and Optimization Design of Double-Swinging Protectors for UHVAC Double Circuit Tension Support

作　　者：刘鹏[1] 郭伊宇 林锐 赵纪倩 全姗姗 Liu Peng;Guo Yiyu;Lin Rui;Zhao Jiqian;Quan Shanshan(State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University, Xi’an 710049 China;PowerChina Fujian Electric Power Engineering Co.Ltd ,Fuzhou 350003 China;China Energy Construction Group Jiangsu Electric Power Design Institute Co.Ltd, Nanjing 210036 China;China Electric Power Research Institute ,Beijing 100192 China)

机构地区：[1]电力设备电气绝缘国家重点实验室(西安交通大学),西安710049 [2]中国电建集团福建省电力勘测设计院有限公司,福州350003 [3]中国能源建设集团江苏省电力设计院有限公司,南京210036 [4]中国电力科学研究院有限公司,北京100192

出　　处：《电工技术学报》2022年第15期3963-3972,共10页Transactions of China Electrotechnical Society

摘　　要：针对一起特高压交流双回输电线路上双摆防舞器电晕放电现象,结合有限元法和电场强度等效法仿真分析并优化了实际线路和单相简化试验布置中双摆防舞器表面电场,获得电晕试验电压并进行电晕试验。研究结果表明,缩短有效摆臂长度、增大摆锤半径可以有效地提高双摆防舞器起晕电压;原椭球摆锤双摆防舞器未通过电晕试验,建议在保证双摆防舞器总重量一定情况下,可通过缩短有效摆臂长度,采用大尺寸空心球形摆锤方案调整其电场特性。优化后双摆防舞器已通过三相带电运行试验,无电晕放电现象。该研究成果可为线路金具设计和制造提供指导。In terms of the corona discharge phenomenon of double-swinging protectors on an ultra high voltage alternating current(UHVAC) double-circuit transmission line, combined with finite element method and field strength equivalent method, the surface electric field of the double-swinging protectors,in the transmission line and the single-phase simplified test layout, was analyzed and optimized, besides the corona test voltage was obtained and the corona test was performed. The results show that shortening the effective swing arm length and increasing the pendulum radius can increase corona onset voltage effectively;The original double-swinging protectors of ellipsoidal pendulum failed to pass the corona test,suggested to replace it with a large-size hollow spherical pendulum and shorten the effective swing arm length to adjust the electric field characteristics on the premise of a certain total weight. After optimization,the double-swinging protectors has passed the three-phase transmission line test, without observed corona discharge. The research results can provide guidance for the design and manufacture of line fittings.

关 键 词：特高压 电场强度等效法 线路金具 电晕试验 

分 类 号：TM726[电气工程—电力系统及自动化]