电力变电站二次系统防雷接地的探讨

A Discussion on Earthing of Lightning Arrestor in the Secondry System of Transformer Substation

共用接地是防止电站二次系统的防雷的有效手段,通过分析雷电侵入变电站二次系统的途径、强度和所造成的危害,在阐明共用接地系统可防止二次设备遭受地电位反击的工作原理,结合变电站工作实际,提出了二次设备采取的基本防雷建议措施。对同类地区电站二次防雷系统的设计具有一定的参考价值。

Sharing earthing is an effectire measure to arrest kitning in the secondary system of transformer substation. The system and elabrating the principle that sharing earthing paper,by analysing the approach, strength and impairment of lightning invasion into the system prevents the secondary apparatus from being reacted by earth potential ,in combination with the reality of the substation,proposes the basic lightning-arresting measbre for the secondary apparatus,which has some reference for the design of the system of the same sort of region.