Hardware Design of Voltage Transformer Secondary Side Polarity Test System
The voltage transformer plays a role of monitoring the secondary voltage in the substation,which can protect the voltage of the high voltage equipment in the substation,so its correct and reliable operation is very impor-tant.The three-phase four-star type voltage transformer can be composed of four single-phase voltage transformers,whose polarity is easy to connect wrong.It is necessary to test the polarity of the voltage transformer in the new sub-station and after the maintenance of the substation equipment.After the polarity is correct,the substation can be put into operation.In this paper,based on the single chip microcomputer design three-phase four-star voltage transformer polarity detection equipment,divided into primary side excitation power,secondary side handheld terminal equip-ment.The experimental platform is built,and the experimental results show that the device can accurately detect whether there is any error in the polarity connection mode of the voltage transformer.
voltage transformerpolarity detectionsingle chip microcomputer
万方数据
维普
