换流阀的通断对阀塔避雷器均压环表面电场的影响

doi:10.11930/j.issn.1004-9649.2016.04.032.06

中国电力 ›› 2016, Vol. 49 ›› Issue (4): 32-37.DOI: 10.11930/j.issn.1004-9649.2016.04.032.06

换流阀的通断对阀塔避雷器均压环表面电场的影响

董志勇¹,杜志叶¹,阮江军¹,金硕¹,周胜¹,胡蓉²,孙帮新²

1. 武汉大学电气工程学院,湖北武汉 430072;
2. 南方电网超高压公司,广东广州 510620

收稿日期:2015-06-08 出版日期:2016-04-20 发布日期:2016-04-27
作者简介:董志勇(1989-),男,河南信阳人,硕士研究生,从事电磁场计算、高电压与绝缘技术研究。E-mail: 953735347@qq.com
基金资助:
国家重点基础研究发展计划项目(973计划)(2011CB209404)

The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring

DONG Zhiyong¹, DU Zhiye¹, RUAN Jiangjun¹, JIN Shuo¹, ZHOU Sheng¹, HU Rong², SUN bangxin²

1. School of Electrical Engineering, Wuhan University, Wuhan 430072, China;
2. EHV Company, CSG, Guangzhou 510620, China

Received:2015-06-08 Online:2016-04-20 Published:2016-04-27
Supported by:
This work is supported by National Basic Research Program of China (973 Program) (No. 2011CB209404).

摘要/Abstract

摘要： 为分析换流阀的通断对阀塔避雷器均压环的影响,采用静电场有限元数值方法,在阀厅整体模型中,对阀塔避雷器均压环表面的电场分布情况进行分析。首先基于12脉动整流电路的原理,分析了换流阀各阀组件在计算时的加载方式,然后结合仿真得到阀厅设备在额定功率和轻载运行时的电位波形。采用静电场瞬时加载法求解,得到各种运行工况下阀塔避雷器均压环场强分布云图和最大值分布规律。通过分析阀塔避雷器均压表面的最大场强与换流阀的导通截止状态发现,在当前设计方案及配置条件下,截止状态下的阀塔避雷器均压环最大场强较导通状态下偏高。这表明换流阀在截止时对周围均压环电场产生的影响较开通时影响更大,这为后续阀厅金具设计优化提供更切合实际、更为准确的计算思路,具有重要的指导意义。

关键词: 换流阀, 均压环, 避雷器, 阀厅, 开通和截止, 最大场强

Abstract: In order to analyze the impact of converter valve’s on-off on the tower arrester grading ring, the electrostatitic field finite element method is applied to analyze the electric field distribution on the surface of tower arrester grading ring. Firstly, the loading mode in calculation is analyzed for each valve assembly of the converter valves based on the principle of the 12 pulse rectifier circuit. Then, the potential waveform of main equipment in the valve hall under rated power and light load power is obtained by simulation. Finally, by using the instantaneous loading method of electrostatic field, the distribution characteristics and the maximum value location of the electric field intensity on the tower arrester grading ring is obtained under various working conditions. It is found through analyzing the maximum electric field intensity on the tower arrester grading ring and the converter valve’s on-off state, that the maximum electric field intensity on the tower arrester grading ring under OFF state is higher than that under ON state, which shows that the converter valve on the OFF state had greater impact on the equipment around than that on the ON state.

Key words: converter valve, grading ring, arrester, valve hall, ON and OFF state, maximum field intensity

中图分类号:

TM835

董志勇,杜志叶,阮江军,金硕,周胜,胡蓉,孙帮新. 换流阀的通断对阀塔避雷器均压环表面电场的影响[J]. 中国电力, 2016, 49(4): 32-37.

DONG Zhiyong, DU Zhiye, RUAN Jiangjun, JIN Shuo, ZHOU Sheng, HU Rong, SUN bangxin. The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring[J]. Electric Power, 2016, 49(4): 32-37.

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https://www.electricpower.com.cn/CN/Y2016/V49/I4/32

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换流阀的通断对阀塔避雷器均压环表面电场的影响

The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring

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换流阀的通断对阀塔避雷器均压环表面电场的影响

The Impact of Converter Valve’s on-off on the Surface Electric Field of the Tower Arrester Grading Ring

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