电压互感器二次侧极性测试系统硬件设计  

Hardware Design of Voltage Transformer Secondary Side Polarity Test System

作　　者：吴忠平 WU Zhong-ping(Suizhou Power Supply Company,State Grid Hebei Electric Power Co.Ltd.,Suizhou 441399,China)

机构地区：[1]国网湖北省电力有限公司随州供电公司,湖北随州441399

出　　处：《电气开关》2024年第6期91-94,共4页Electric Switchgear

摘　　要：电压互感器在变电站中起到监测二次电压的作用,能够对变电站的高压设备进行电压保护,因此其正确可靠地运行十分重要。三相四星型的电压互感器可采用4个单相电压互感器构成,其极性容易接错。在新建变电站、变电站设备维护后都需要对电压互感器的极性进行检测。极性正确后,变电站才能够投入运行。基于单片机设计了三相四星型的电压互感器的极性检测设备,分为一次侧激励电源,二次侧手持终端设备。并搭建了实验平台,实验结果表明:该设备能够准确检测电压互感器的极性接线的方式是否存在错误。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 important.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 substation 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 equipment.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.

关 键 词：电压互感器 极性检测 单片机 

分 类 号：TM451[电气工程—电器]