750kV变电站避雷器受力分析

Force analysis of Lightning Arrester in 750 kV Substation

文章对常用750kV避雷器进行受力分析,并探究在极端条件下避雷器断裂的可能性。通过构建引下线、管型母线和避雷器的复合受力结构,核验了极端条件下避雷器能否承受荷载强度。在理论验证确定避雷器理想强度足够在极端条件下保证正常工作时,根据750kV变电站避雷器断裂先例,对避雷器断裂的可能原因进行了分析,并从设计角度给出了一些可行性建议。

This paper analyzes the force of 750 kV arresters and explores the possibility of lightning arrester breaking under extreme conditions.The load strength of the arrester under extreme conditions is verifi ed by constructing the composite force structure of the lead line,the tube busbar and the arrester.According to the fault precedent of 750 kV substation arrester,the possible cause of arrester fracture is analyzed,and some feasible suggestions are given from the design point of view.