Optimal Design of Grading Rings for 750 kV AC Composite Insulator

BO Xue-wei1; BIAN Xing-ming2; WANG Li-ming2; GAO De-gang1; REN Gui-qing1

doi:10.13296/j.1001-1609.hva.2010.12.003

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Optimal Design of Grading Rings for 750 kV AC Composite Insulator

更新时间：2025-04-26

- Optimal Design of Grading Rings for 750 kV AC Composite Insulator
- High VoltageApparatus Vol. 46, Issue 12, Pages: 5-8(2010)
- 作者机构：
  
  1. 大连电瓷集团股份有限公司
  2. 清华大学深圳研究生院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2010.12.003
  CLC： TM216
- Published：2010
- 稿件说明：
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[1]薄学微,卞星明,王黎明,高德刚,任贵清.750kV交流复合绝缘子均压环优化设计[J].高压电器,2010,46(12):5-8.

BO Xue-wei1, BIAN Xing-ming2, WANG Li-ming2, et al. Optimal Design of Grading Rings for 750 kV AC Composite Insulator[J]. High voltageapparatus, 2010, 46(12): 5-8.
[1]薄学微,卞星明,王黎明,高德刚,任贵清.750kV交流复合绝缘子均压环优化设计[J].高压电器,2010,46(12):5-8. DOI： 10.13296/j.1001-1609.hva.2010.12.003.

BO Xue-wei1, BIAN Xing-ming2, WANG Li-ming2, et al. Optimal Design of Grading Rings for 750 kV AC Composite Insulator[J]. High voltageapparatus, 2010, 46(12): 5-8. DOI： 10.13296/j.1001-1609.hva.2010.12.003.

摘要

基于有限元数值仿真计算方法

建立了750 kV线路杆塔—导线—绝缘子的塔线三维电场仿真模型

研究优化750 kV复合绝缘子均压环的结构参数

并对均压环的均压效果进行了分析。计算结果表明

均压环可显著地改善绝缘子电场分布

高压端均压环表面的最大电场强度控制在20 kV/cm以下

可见电晕和无线电干扰试验的结果表明

高压端金具和均压环的起晕电压、无线电干扰水平均符合国家标准或规程要求

设计的均压环能够满足750 kV输电线路对复合绝缘子的使用要求。研究结果为750 kV输电线路外绝缘设计提供了有益的参考。

Abstract

In this paper

the structural parameters of grading rings for 750 kV composite insulator were optimized by means of finite element numerical simulation based on the building of 750 kV line tower-conductors-insulators three-dimensional electric field simulation models.The effects of the grading rings were analyzed.The calculation results show that grading ring can significantly improve the distribution of electric field

the greatest electric field strength on surface of the line end grading ring less than 20 kV/cm.The corona and RIV tests show the corona inception voltage and radio interference level of the fittings and corona rings can well meet the national standards or specifications.The grading rings designed can meet the requirements of 750 kV transmission line.The result provides a useful reference for the external insulation design of 750 kV transmission.

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