摘要
本保护装置根据西北地区330kV安康—南郊同杆双回线的要求,由三方联合开发研制。可提供电流平衡、电流比相以及适用于各种运行方式变化的复合横联保护,具有动作速度快(近处故障时小于15ms)、灵敏度高(相继动作区小于10％)、功耗小及独立选相等优点。保护具有完善的闭锁回路,在出现任何形式的单回线运行方式时,能自动闭锁保护,防止误动作。
This protective relaying system is designed for 330kV Ankang-Nanjiao double-circuit line on same tower in North-West China. It is a complex transverse differential protection which includes current balance relays and current phase comparison relays. It possesses high speed, high sensitivity, low burden for CT and PT, and sophisticated function of phase-selection. Besides, based on the automatic blocking circuits, maloperation of the protection can be avoided when one of the parallel lines is disconnected.
出处
《电力系统自动化》
EI
CSCD
北大核心
1989年第4期38-43,共6页
Automation of Electric Power Systems
