【摘要】 3种不同伞型的复合绝缘子在亲水性状态和 4种海拔高度、两种盐密下进行了人工污秽试验 ,并和典型的电瓷绝缘子做了比较 ,同时也进行了憎水性状态下复合绝缘子的污闪试验。试验结果表明 ,复合绝缘子污闪电压随气压降低有规律地降低 ,而且即使表面丧失憎水性其耐污闪性能也远高于电瓷绝缘子。更多还原

【Abstract】 For three types of composite insulators with the hydrophilic surfaces, the artificial contamination tests are carried out in four pressure cases corresponding to the altitude from 0 m to 3 000 m with two typical kinds of equivalent salt deposit density (ESDD). The test results show that the flashover voltage of the composite insulator regularly decreases with the dropping of the air pressure. It is also observed that, in the high altitude cases, even if under the most serious condition, the pollution behavior of composite insulator performs much better than that of the normal porcelain insulator.更多还原