智能变电站中励磁涌流制动功能的现场测试方法

Field test method of intelligent substation's magnetizing surge current restraint function

提出了应用于智能变电站中主变保护励磁涌流制动功能的一种现场测试方法,介绍了测试系统的各装置功能及整体实施方案。该测试方法运用电力系统数字仿真软件DDRTS作为测试系统主机,通过研究变压器励磁涌流产生的机理以及波形特征,在DDRTS中搭建了变压器仿真测试励磁涌流模型,将仿真数据实时同步传输给现场主变高中低三侧的采样合并单元,通过现场主变保护的动作情况与故障录波验证了该测试方法的可实施性。

A field test method is proposed for the intelligent substation's magnetizing surge current restraint function and the function of test system's each device and the overall implementation of the program is described. The test program uses DDRTS( a digital power system simulation software) as a test system mainframe. By studying the generated mechanism of transformer inrush and waveform characteristics,the transformer magnetizing inrush model is built in DDRTS and the simulation data are transferred in real time synchronously to the main transformer's three side sampling merging unit. The implement-ability of test method is verified through the actions of main transformer protection and fault recording.