川渝特高压输电线路绝缘子串均压屏蔽环的高海拔电晕特性

QUAN Shanshan; XIE Liang; CAO Jing; ZHANG Rui; PENG Changzhi; DENG Jiejie

doi:10.13336/j.1003-6520.hve.20250122

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川渝特高压输电线路绝缘子串均压屏蔽环的高海拔电晕特性

更新时间：2026-09-16

- 川渝特高压输电线路绝缘子串均压屏蔽环的高海拔电晕特性
- Vol. 52, Issue 3, Pages: 1405-1426(2026)
- 作者机构：
  
  1. 中国电力科学研究院有限公司,北京,100192
  2. 武汉大学电气与自动化学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：10.13336/j.1003-6520.hve.20250122
  CLC：
- Received：31 March 2026，
  
  Published：2026
- 稿件说明：
移动端阅览
QUAN Shanshan, XIE Liang, CAO Jing, et al. 川渝特高压输电线路绝缘子串均压屏蔽环的高海拔电晕特性[J]. 2026, 52(3): 1405-1426.
DOI：

QUAN Shanshan, XIE Liang, CAO Jing, et al. 川渝特高压输电线路绝缘子串均压屏蔽环的高海拔电晕特性[J]. 2026, 52(3): 1405-1426. DOI： 10.13336/j.1003-6520.hve.20250122.

摘要

交流输电线路金具电晕效应的海拔修正和电场强度控制是选型配置的关键因素，目前对3 km以上高海拔特高压电力金具的电晕特性研究较少，相关的规律尚不完善。利用环境气候室，模拟不同海拔条件下的气候开展不同金具的电晕特性，提出了适用于输电线路均压屏蔽金具电晕试验需求的分段式海拔修正计算方法；采用低海拔试验研究和有限元仿真相结合的方法，推荐了高海拔工程要求的场强控制值。在此基础上依据3~5 km海拔的设计要求，通过建模仿真计算获得了悬垂和耐张绝缘子串金具的选型方案，同时在低海拔23 m和高海拔4 300 m进行了真型电晕特性试验验证，试验时电晕熄灭电压均高于规定电压且有一定的裕度，可满足高海拔特高压输电线路的防晕设计要求。研究成果已应用于国内川渝高海拔特高压输电线路工程设计中。

Abstract

The altitude correction and electric field strength control of corona effect for AC transmission lines are the key factors for selection and configuration. At present

the research on corona characteristics of UHV power fittings over 3 km altitude is rarely available in the literature

and the regularity is not perfect. Therefore

the corona characteristics of different fittings are simulated under different altitude conditions by using environmental climate chamber

and a segmented altitude correction calculation method is proposed which is suitable for corona tests of grading and shielding rings. The field strength control value of high altitudes is obtained by combining corona tests and finite element simulations. According to the design requirements of 3~5 km altitude

the selection schemes of fittings for suspension and tension insulator string are required by the modeling and simulation software. According to the simulation

the recommended schemes are verified by visible corona tests at the altitude of 23 m and 4 300 m

and the corona extinction voltages are higher than the specified voltage and have a certain margin. The tests can meet the requirements of high-altitude UHV transmission lines. The research results have been applied to the design of Sichuan - Chongqing high altitude UHV transmission project of china.

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