谢剑峰，秦成，黄澜涛，徐懿.变压器近区短路电流在线监测设备的研制[J].电测与仪表,2013,50(12):. .Monitoring Equipment of Short-circuit Current of Transformer[J].Electrical Measurement & Instrumentation,2013,50(12):.
变压器近区短路电流在线监测设备的研制
Monitoring Equipment of Short-circuit Current of Transformer
In case of a short-circuit fault occurring in the low voltage side of the 110kV transformer, a large current may flow through the transformer windings. And if the short-circuit occurring frequently, the transformer would be damaged seriously. In order to solve this problem, an on line monitoring equipment was proposed in the paper to detect the current using the four-wire method and auto-range measuring circuitry. The TMS320F2812 and LPC2220 were employed as the embedded microprocessors and a dual-port RAM was used to perform the data interaction. And the communication based on the TCP/IP protocol was used to collect the real-time currents data in normal status and the fault status. With these data, the characteristic values could be calculated and the waveform of short-circuit current could be stored.
