特高压换流站大尺寸典型电极起晕特性的仿真与试验

doi:10.19595/j.cnki.1000-6753.tces.210631

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摘要为确保特高压换流站均压屏蔽装置设计合理可靠,提出用于一种分析复杂电场环境下大尺寸典型电极起晕特性的三维仿真计算方法,并开展大尺寸球、环电极电晕试验进行试验验证。试验结果表明,所提出的计算方法能够有效计算特高压换流站大尺寸典型电极表面起晕电场强度,预测值与试验值的相对误差范围在-2.6%~3.4%之间。该文分析并验证了均压环等效半径经验公式,获得该公式适用的均压环管径与环径范围。研究成果可为大尺寸电极起晕电场强度预测、换流站均压屏蔽金具设计提供参考和依据。

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关键词 ：特高压, 大尺寸电极, 电晕试验, 起晕电场强度

Abstract：To ensure the reliable design of the shielding device in UHV converter stations, a three-dimensional method to analyze corona onset characteristic of large size shielding devices was proposed in the paper. The corona test is carried out with large size sphere and ring electrodes, and the test results show that the method this paper proposed can effectively predict the corona onset E-field strength on the surface of large-size typical electrodes in UHV converter stations, and the relative error between the prediction value and the experimental value is between -2.6% and 3.4%. The empirical formula for equivalent radius of grading ring is analyzed and verified, which the scope of the formula about pipe diameter and ring diameter is determined. The research can provide basis for the prediction of the corona onset electric strength of the large size electrodes and the design of the shielding devices.

Key words： UHV large size shielding device corona test corona onset E-field strength

收稿日期: 2021-05-06

PACS:

TM854

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, 吴泽华, 张炜, 谢梁. 特高压换流站大尺寸典型电极起晕特性的仿真与试验[J]. 电工技术学报, 2022, 37(13): 3431-3440. Liu Peng, Guo Yiyu, Wu Zehua, Zhang Wei, Xie Liang. Simulation and Experimental Study on Corona Characteristics of Large Size Typical Electrodes Used in UHV Converter Station. Transactions of China Electrotechnical Society, 2022, 37(13): 3431-3440.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.210631 https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I13/3431

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