火电机组空冷岛底部高压绝缘子污闪的原因及防范措施

Flashover Reason and Countermeasures of High Voltage Insulator in Bottom of Thermal Power Units Air-cooling Island

根据空冷机组底部布置高压电气设备绝缘子以及高温季节空冷换热面进行水冲洗的实际情况,阐述了绝缘子发生污闪的成因,同时提出了相关防范措施。

According to situation of high voltage electrical equipment laying on the bottom of the air-cooling unit and the air-cooling heat transfer surface should be flushing by water during high temperature season,the paper discusses the reason of insulator flashover and proposes corresponding countermeasures.