摘要
通过对广东省珠海地区2010年2月2—7日连续大雾期间输电线路在线监测数据进行分析,认为沿海地带化工产业集聚区域绝缘水平降低的主要原因是湿沉降(酸雾和盐雾)所致,也是等值附盐密度测量值低而实际污秽等级高的主要原因。在对合成绝缘子、瓷绝缘子和玻璃绝缘子的监测数据进行比较后,认为采取提高瓷绝缘子和玻璃绝缘子爬电比距的方法并不能有效地遏制湿沉降对外绝缘的危害,而选择使用合成绝缘子则具有较好的效果。
Upon investigation into the data of transmission line collected in Zhuhai,China in the foggy weather during February 2nd—7th,2010,it is confirmed that the reduced insulation level in the chemical industry cluster along the coast area is mainly induced by the wet precipitation（acid fog and salt fog） in that area.The wet precipitation also in part explains the actually high pollution class with low measured equivalent salt deposit density（ESDD）.By comparing the monitoring data of composite,porcelain and glass insulators,it is concluded that the damage of wet precipitation to external insulation can not be effectively reduced by increasing the creepage distance of porcelain and glass insulators,whereas the use of composite insulators is of better effect.
出处
《广东电力》
2010年第9期32-36,共5页
Guangdong Electric Power
关键词
湿沉降
输电线路
等值附盐密度
泄漏电流
wet precipitation
transmission line
equivalent salt deposit density（ESDD）
leakage current
