500 kV线路地线绝缘子间隙烧伤研究

doi:10.11930.2015.7.153

摘要/Abstract

摘要： 针对500 kV线路地线绝缘子间隙烧伤实际工程问题，通过系统性分析发现地线绝缘子接地方式安装错误导致耐张段地线全绝缘，是造成间隙烧伤的主要原因。其次，地线绝缘子间隙结构设计不合理也是一个重要原因。对500 kV线路可能采取的所有接地方式进行了不同工况下的定量研究，通过仿真计算绝缘架空地线在不同接地方式下的感应电流、感应电压和感应能量，进一步量化确定地线绝缘子间隙烧伤的原因。结合仿真结果和工程实际，提出了地线绝缘子间隙改进方案。

关键词: 500 kV, 地线绝缘子, 间隙, 烧伤, 仿真计算

Abstract: In view of the parallel gap burn problem of ground wire insulator for 500 kV transmission lines, a systematic analysis indicates that the wrong grounding mode of ground wire insulator, which leads to the complete insulation of the strain section, is the principal reason for the parallel gap burn, and the unreasonable structure of ground wire insulator gap is another important reason. In this paper, a quantitative study has been carried out on all the grounding modes of 500 kV transmission line under different operating conditions. The induced current, induced voltage and induced energy are simulated and calculated under different grounding modes of ground wire, and the reasons for the parallel gap burn problem are further quantitatively determined. Finally, based on the simulation results and engineering practices, an improved scheme is proposed for the parallel gap of ground wire insulators.

Key words: 500 kV, ground wire insulator, parallel gap, electricity burn, simulation calculation

中图分类号:

TM85

方玉群，徐飞明，顾浩，梁加凯，孙光旭，邢哲鸣. 500 kV线路地线绝缘子间隙烧伤研究[J]. 中国电力, 2015, 48(7): 153-160.

FANG Yuqun, XU Feiming, GU Hao, LIANG Jiakai, SUN Guangxu, XING Zheming. Research on Parallel Gap Burn of Ground Wire Insulator for 500 kV Transmission Lines[J]. journal1, 2015, 48(7): 153-160.

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https://www.electricpower.com.cn/CN/Y2015/V48/I7/153

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