Abstract：The power grid stability can be improved by the using of two-shot auto-reclosing on EHV transmission lines. At present in North China power grid, protection devices with two-shot auto-reclosing function have been used on some 500kV transmission lines, but some obstacles remain in the popularization and application of this kind of devices. In order to promote the using of two-shot auto-reclosing in the state grid of China, this paper analyzes the adaptability of the current two-shot au-to-reclosing scheme used on 500kV transmission lines in North China power grid under the six-unified standards of State Grid, and puts forward the existing problems and solutions. On this basis, two-shot auto-reclosing scheme of 500kV transmission lines based on the six-unified standards logics are proposed, as well as the logic design of device.
刘奎, 杜鹃, 陆金凤, 戴光武, 杨慧敏. 基于“六统一”规范的500kV输电线路二次重合闸改进方案研究[J]. 电气技术, 2020, 21(6): 111-115.
Liu Kui, Du Juan, Lu Jinfeng, Dai Guangwu, Yang Huimin. Research on improving scheme of two-shot auto-reclosing used on 500kV transmission lines basing on the six-unified standards. Electrical Engineering, 2020, 21(6): 111-115.
2020, Vol. 21 
