轨道交通环网供电继电保护控制方案优化

Optimization of Relay Protection Scheme for Rail Transit Power Supply

轨道交通供电通常采用单环网或双环网接线。传统继电保护方案依靠电流和时间级差配合,系统保护可靠性较低。为了提高系统的可靠性,提出轨道交通环网供电继电保护控制优化方案,采用GOOSE通信保护配置方案得到整条线路开关信息数据,根据数据结果对过电流保护进行逻辑判断,确定故障发生位置,使故障位置附近的保护装置快速动作,解决继保级差配合问题,实现继电保护控制。

Rail transit power supply usually adopts single-ring network or double-ring network connection.The traditional relay protection scheme relies on cooperation of current and time level difference,so the reliability of system protection is low.In order to improve systemreliability,this paper puts forward the optimization of relay protection control scheme for rail transit ring network power supply.GOOSE communication protection configuration scheme is adopted to exchange the switch information data of the whole line,and over-current protection is logically judged according to data results to locate the fault,therefore enabling prompt action ofnearby protection device,solving the problem of poor coordination of relay protection and realizing relay protection control.