330kV线路保护“沟通三跳”压板投退分析

Analysis on the Application of the “Triple Trip Circuit Linking” Pressure Plate of the 330 kV Transmission Line Protections

介绍青海电网330 kV线路保护"沟通三跳"压板不同保护厂家设计思路和理念,在330 kV线路保护投入单重方式下,不同厂家线路保护"沟通三跳"压板投退不同。针对青海电网常用线路保护装置进行分析,对指导现场"沟通三跳"压板投退,帮助运维人员更好地理解"沟通三跳"有积极意义。

This paper gives an introduction to various concepts and thoughts of different manufacturers on the design of the 330 kV line protections for the Qinghai power grid. In the case of the single phase re-closure mode of the 330 kV line protections in service,the ways to put the ＂Triple trip circuit linking＂pressure plate into service and to withdraw the pressure plate from service are different from the different manufacturers. An analysis on the protection devices common in the Qinghai power grid is given in this paper to guide the application of the ＂Triple trip circuit linking＂pressure plate in practice and help the operator and maintainers understand the＂Three phase tripping linking up＂principle better.