多雾地区输变电设备外绝缘配置的探索

Investigation of External Insulation Selection for Power Delivery & Transmission Equipment in Foggy Area

介绍雾的微物理特征及其与大气污染的关系 ,对污秽和较清洁的多雾地区进行雾试样采集、分析 ;实测雾在绝缘子表面因湿沉降产生的污染影响度 ,并用公式估算持续污秽雾的湿沉降对空中悬浮物的污染影响 ;提出清洁雾已不存在 ,在易出现持续大雾天气的地区 。

This paper introduces the micro physical character for fog and its relation with air pollution. The collection & analysis of fog example are conducted in the polluted and comparably clean foggy area. The pollution caused by droplet fallout at the surface of insulator is measured, and the pollution of suspended matter in the air caused by droplet fallout of sustained polluted fog is estimated by formula. It is pointed out that the clean fog is not existed, the selection of insulator's creepage distance per kilovolt should be in accordance with the level higher than that in actual place where sustained fog is easy to occur.