基于实时数字仿真系统的小电流接地选线装置性能测试

Performance Test of Low Current Grounding Line Selection Device Based on Real-Time Digital Simulation System

单相接地故障是小电流接地配电网最为常见的故障类型,但现场投运的小电流接地选线装置往往难以满足应用需求,影响接地故障的快速准确处理。考虑到当前小电流接地选线厂家众多,装置型式多样,难以直观评价不同装置的选线性能并进行横向对比,现场选线装置的选型应用缺乏支撑依据。为此,基于实时数字仿真系统(RTDS);搭建了小电流接地选线装置测试平台并开展了不同选线装置的并行测试工作,通过全方位故障场景下的同台测试,为小电流选线装置的试点选型应用工作提供有力支撑。

Single phase grounding fault is the most common fault type in small current grounding distribution network,but the on-site low current grounding line selection device is often difficult to meet the application requirements,affecting the rapid and accurate treatment of grounding fault.Considering that there are many low current grounding line selection manufacturers and various device forms,it is difficult to intuitively evaluate the line selection performance of different devices and make horizontal comparison,and there is no supporting basis for the selection and application of on-site line selection devices.Therefore,based on the real-time digital simulation system(RTDS),this paper establishes a test platform for small-current grounding line selection device,and carries out parallel testing of different line selection devices.Through the same test under all-round fault scenarios,it provides strong support for the pilot application of small current line selection device.