微机可控高压并联电抗器保护的研制

Development of Microcomputer Protection for a Controllable High-voltage Shunt Reactor

对于长距离特高压输电线路,为减少损耗、平衡无功、控制电压,长远看有必要采用可根据输电负荷自动调节容量的可控高压并联电抗器。介绍了高阻抗原理可控高压并联电抗器保护的研制过程、保护配置和主保护原理,及其与普通高压并联电抗器保护的区别。该保护装置已应用于忻州开关站可控高压并联电抗器科研试验示范工程。

For long distance ultra-high voltage AC transmission lines, it is quite necessary to adopt a controllable shunt reactor which can self-regulate its capacity according to load to reduce the line loss, to balance reactive power and to control voltage. This paper presents the protection research process, the protection configuration and the main protection principles of the controllable reactor of the high impedance type. The difference between the controllable shunt reactor protection and common shunt reactor protection is also described. The protection device has been used in the controllable shunt reactor demonstration project of a 500 kV switching station in Xinzhou, Shanxi Province.