水泥污秽对复合绝缘子污秽闪络特性的影响研究  

The Influence of Concrete Pollution on Flashover Characteristic of Composite Insulator

作　　者：李志玮[1] 周瑜[1] 姚欢 冯亦佳 

机构地区：[1]青海电力科学试验研究院,西宁810008 [2]西宁供电公司,西宁810000 [3]乐清电力实业总公司,浙江乐清325600

出　　处：《绝缘材料》2009年第5期45-47,51,共4页Insulating Materials

摘　　要：针对电力系统复合绝缘子污秽闪络产生的危害问题,提出了开展污秽闪络特性研究的重要性,研究了NaCl(盐密ESDD)一定的情况下,不同水泥污秽(灰密NSDD)对复合绝缘子污秽闪络特性的影响,研究结果表明:灰密对绝缘子人工污秽闪络电压也是有影响的,闪络电压与灰密成幂函数关系,并且灰密对闪络电压的影响是独立的。The importance of study on pollution flashover was pointed out; taking concrete and NaCI as the pollution, the AC flashover characteristic of polluted composites insulators under the conditions with the same equivalent salt deposit density（ESDD） and different non-soluble deposit density （NSDD） was researched by test. The results show that non-soluble deposit density has influence on the flashover voltage in artificial contaminated test; the flashover voltage Uf of the composite insulators decreases with the increase of NSDD by a power function with a negative index, and the NSDD＇s influence on the flashover voltage is independent.

关 键 词：复合绝缘子 水泥 人工污秽试验 污秽闪络 

分 类 号：TM216[一般工业技术—材料科学与工程] TM201.4[电气工程—电工理论与新技术]