文档介绍：第 28 卷第 6 期中国电机工程学报 , 2008
2008 年 2 月 25 日 Proceedings of the CSEE ©2008 . 7
文章编号:0258-8013 (2008) 06-0007-06 中图分类号:TM 852 文献标识码:A 学科分类号:470⋅40
低气压下特高压直流污秽复合
绝缘子覆冰闪络特性
张志劲,蒋兴良,孙才新,舒立春,苑吉河,王波
(输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区 400030)
Icing Flashover Performance of UHV posite
Insulators at Low Atmospheric Pressure
ZHANG Zhi-jin, JIANG Xing-liang, SUN Cai-xin, SHU Li-chun, YUAN Ji-he, WANG Bo
(State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University),
Shapingba District, Chongqing 400030, China)
ABSTRACT: The newly building ±800 kV ultra high voltage 拔的影响。该文在人工气候室模拟高海拔的低气压研究了 2
(UHV) transmission lines in China will adopt posite 种不同伞型结构的染污复合绝缘子直流冰闪特性。结果表
insulator for its excellent preventing pollution performance, 明:特高压直流复合绝缘子冰闪电压随冰厚和污秽程度增加
which face with the multi influence of ice and high altitude. 均呈幂函数规律下降,2 种绝缘子冰厚影响特征指数分别为
The paper studies the DC icing flashover performance of two 、,污秽影响特征指数则分别为 2、 4。
different shed configurations of posite insulators 而冰闪电压与高海拔低气压之间满足幂函数关系,其气压影
at low air pressure simulated by the multifunction artificial 响特征指数与绝缘子型式、覆冰状态和覆冰量、污秽程度等
climate chamber. The test results show that the DC icing 有关。在中等覆冰条件下,五三型结构复合绝缘子具有较好
flashover voltage may depress by power function rule with the 的覆冰电气性能。