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

doi:10.19595/j.cnki.1000-6753.tces.210903

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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。

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关键词 ：特高压, 电场强度等效法, 线路金具, 电晕试验

Abstract：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.

Key words： Ultra high voltage(UHV) equivalent electric field strength method line fittings corona test

收稿日期: 2021-06-19

PACS:

TM726

通讯作者: 郭伊宇男,1996年生,硕士研究生,研究方向为高电压试验技术、电力设备绝缘结构设计及多物理场仿真。E-mail：gosick@stu.xjtu.edu.cn

作者简介: 刘鹏男,1979年生,教授,博士生导师,研究方向为高端交/直流套管关键技术、特高压GIL类关键技术、电力设备绝缘结构设计及多物理场仿真等。E-mail：pengliu@mail.xjtu.edu.cn

引用本文:

刘鹏, 郭伊宇, 林锐, 赵纪倩, 全姗姗. 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[J]. 电工技术学报, 2022, 37(15): 3963-3972. Liu Peng, Guo Yiyu, Lin Rui, Zhao Jiqian, Quan Shanshan. Equivalent Electric Field Strength Method used in Corona Test and Optimization Design of Double-Swinging Protectors for UHVAC Double Circuit Tension Support. Transactions of China Electrotechnical Society, 2022, 37(15): 3963-3972.

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