基于GPS同步的金属氧化锌避雷器无线带电检测系统设计和实现

摘要

金属氧化锌避雷器(MOA)的阻性电流大小能较好地反应其设备状态,传统的MOA阻性电流测量方法每次测试时需在电压互感器二次侧接线,有较大的安全隐患.提出了一种新型的MOA阻性电流无线测量方法,基于GPS和无线通信模块实现便携式电流检测装置与电压监测装置的无线同步测量,通过基于傅里叶级数的算法实现检测MOA的阻性电流.重点阐述了系统的组成以及硬件的设计原理和实现方法,试验测试和现场运行测试结果表明方法满足MOA阻性电流测量的要求.%The resistive current of Metal oxide surge arrester ( MOA) indicates the condition of the equipment well. The traditional method of the measurement of MOA resistive current need wiring in the output of PT second side every time. This brings more security risks. This paper proposed a new method of MOA resistive current wireless measurement. It uses a portable current detection device and voltage monitoring device to realize wireless simultaneous measurement based on GPS and wireless communication, and detects the resistive current of MOA based on Fourier Series algorithm. This thesis focus on the system composition and hardware design. The result show that the method meets the requirement of measurement of resistive current of MOA.