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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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

Received: 06 May 2021

PACS:

TM854

Fund:国家电网公司总部科技项目资助（5500-201947423A-0-0-00）

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	Liu Peng
	Guo Yiyu
	Wu Zehua
	Zhang Wei
	Xie Liang

Cite this article:

Liu Peng,Guo Yiyu,Wu Zehua等. Simulation and Experimental Study on Corona Characteristics of Large Size Typical Electrodes Used in UHV Converter Station[J]. Transactions of China Electrotechnical Society, 2022, 37(13): 3431-3440.

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

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