Influence of wind speed and direction on flashover characteristic of composite insulators

被引：3

作者：

Jia, Bo-Yan ^{[1
,2
]}

Geng, Jiang-Hai ^{[1
]}

Fang, Chun-Hua ^{[2
]}

Hu, Cong ^{[2
]}

Wang, Bing-Zheng ^{[2
]}

机构：

[1] Hebei Electric power Research Institute

[2] School of Electrical Engineering, Wuhan University

来源：

Gaodianya Jishu/High Voltage Engineering | 2012年 / 38卷 / 01期

关键词：

Airflow; Arc; Composite insulators; Flashover voltage; Wind direction; Wind speed;

D O I：

10.3969/j.issn.1003-6520.2012.01.011

中图分类号：

学科分类号：

摘要：

Composite insulator flashover in power system is often related to windy weather. Besides flashover caused by windage yaw, we found that a certain number of composite insulator flashover faults still exist under the condition of low wind speed. For the lack of references that focus on the influence of air flow on composite insulators flashover voltage at home and abroad, and to study the influences of wind speed and direction on composite flashover voltage, we set up flashover platform in the wind tunnel laboratory to simulate different wind speed and direction in nature, and we obtained a relationship of wind speed, wind direction and the composite insulator flashover voltage through a large number of artificial flashover tests. The test results confirm that flashover voltage of composite insulators increases with wind speed. Flashover voltage is influenced by wind angle, and the closer of wind angle to 90°, the higher flashover voltage is. Air flow inhibits the formation and development of insulator flashover. The obtained ultraviolet results can be used to analyze composite insulator flashover accidents.

引用

页码：75 / 81

页数：6

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