| The 10 kV power distribution network as in the power system directly to power users of network, distribution of the electric energy has extraordinary significance. However, complicated distribution network operation conditions, vulnerable to 10 kV overhead insulated wire break line caused by lightning, the serious influence power grid power supply reliability, and sustainability. In order to solve this problem, in this article, through all kinds of lightning protection equipment installation, and lightning protection equipment lightning protection effect of the comprehensive comparison, in-depth analysis of the distribution network and application effect of lightning protection measures, and enhance the level of distribution network lightning protection methods are studied.Paper summarizes the domestic and foreign research situation of lightning protection of 10 kV overhead insulated wires, from different angles expounds the lightning protection research the significance of the distribution network. Insulated wires are thoroughly analyzed the principle of lightning strike, lightning protection has been clear about the reason, and through the early preliminary grasp of the lightning protection equipment performance, this topic decided to arc over-voltage protector, lightning protection hardware, hardware is a detailed study, through the laboratory experiment to test the lightning protection performance of lightning protection devices. Protect gap lightning protection method is studied, and the protection gap should be prior to the discharge of insulator string, guide the lightning current into the earth, thus protect the insulator string and lines were destroyed. Use appropriate neutral point grounding way to reduce the rate of lightning arc built distribution network, for different network structure in different neutral grounding mode. First of all, but to give priority to with overhead line network adopts automatic tracing arc suppression coil grounding method, and considering the needs of the lightning protection and the response speed of the arc suppression coil, the proposal USES preset type automatic arc suppression device in order to meet the needs of the lightning protection. And types for different lines of power distribution system, the automatic reclosing device is put into operation conditions are analyzed.Paper from the perspective of theory and practical engineering applications of all kinds of existing lightning protection measures for the comprehensive analysis and evaluation, and studies the lightning protection to distribution network solutions, in order to ensure the safety and reliability of the power distribution system, at the same time, which laid a foundation for the development of the new lightning protection equipment. |
