基于装置电源同步的氧化锌避雷器在线监测系统设计

Design of Online Monitoring System for MOA Based on Synchronous of Power Device Power Synchronization

阻性电流的计算需要同步测量金属氧化锌避雷器(MOA)的电压和泄漏电流,对此提出一种基于装置电源同步采集阻性电流的方案,该方案以装置电源为参考完成阻性电流计算,不需要增加同步时钟源和同步信号线,降低了系统的结构复杂度和施工难度。测试结果表明,该方案精度高,可以满足阻性电流计算的要求。

The calculation of resistive current requires simultaneous measurement of the voltage and leakage current of the metal zinc oxide arrester(MOA).In this regard,a method of synchronously collecting resistive current based on the power supply of the device is proposed.The solution uses the device power supply as a reference to complete the resistive current calculation,without adding a synchronous clock source and a synchronous signal line,and reduces the structural complexity and construction difficulty of the system.The test results show that the scheme has high accuracy and can meet the requirements of resistive current calculation.