基于绝缘横担的配电网综合防雷系统配置与实施方案

Configuration and Implementation Scheme for Integrated Lightning Protection System of Distribution Network Based on Insulated Crossarm

摘要:

配电网由于设计规范限制，绝缘水平低，自身雷电防护能力较弱。随着复合绝缘材料在 10 kV 配电网上的应 用推广，绝缘横担通过与常规防雷措施特点对比，其优异的防雷击闪络和防工频续流能力，可实现大幅提升 10 kV 输 电线路雷击防护能力。为进一步降低 10 kV 配电网雷击跳闸或断线事故的发生，提出了基于绝缘横担并结合常规防 雷措施组成的区段式配网综合防雷系统，实现多层次、立体化的防雷。

Abstract:

Due to the limitations of design specification，the distribution network has low insulation level and weak lightning protection ability． With the application and promotion of composite insulation materials in 10 kV distribution network，through the comparison of the characteristics of insulation crossarm and conventional lightning protection measures，the excellent protection ability against lightning flashover and power frequency continuous current of insulated crossarm can be realized to significantly improve the lightning protection ability of 10 kV transmission line． In order to further reduce the occurrence of lightning tripping or wire breaking accidents in 10 kV distribution network，a comprehensive lightning protection system of section distribution network based on insulated crossarm and combined with conventional lightning protection measures is proposed to realize multi － level and three － dimensional lightning protection system．