基于RTDS的智能变电站故障排查试验方案设计

Trouble Shooting Test Scheme Design of Intelligent Substation Based on RTDS

智能变电站发生故障时,后台监控系统会发出大量的告警信号,运行人员有时无法及时、准确判断故障区域,对此设计了4种排查不同类型故障的闭环测试方案。方案1可排查线路保护或变压器保护装置故障,方案2可排查网络交换机故障,方案3可排查合并单元和智能终端设备故障,方案4可排查系统复杂故障。通过RTDS仿真试验验证了4种方案的正确性、可靠性,可实现对智能变电站单装置、单间隔、整站及区域电网的闭环测试,可解决智能变电站电气二次系统故障难以排查的技术难题。

When intelligent substation fault occurs, the background monitoring system will send a lot of alarm signals and the operating personnel sometimes cannot judge the fault area timely and accurately. In view of this situation, the design of four closed loop test schemes for check different types of fault was presented, the first scheme could troubleshoot protection device of transformer or line, the second scheme could troubleshoot network switch, the third scheme could troubleshoot the merging unit and intelligent terminal equipment, the fourth scheme could check complex fault of the whole system. The accuracy and reliability of the four schemes was verified through experiment, through the combination of these four schemes could realize the closed-loop test of intelligent substation single device, single spaced, station and regional power grid, and the technical problem that electrical secondary system of intelligent substation fault was difficult to search was solved.