High-voltage transformer group operation state real-time acquisition system

The invention provides a high-voltage transformer group operation state real-time acquisition system, which obtains the dielectric loss of a high-voltage transformer based on the secondary side voltage and leakage current of the high-voltage transformer, and performs mutual verification on the pressure, humidity and temperature data and the dielectric loss analyzed based on the secondary side voltage and leakage current. The fault monitoring reliability of the system is enhanced; compared with the traditional ultrasonic partial discharge detection method, the method for detecting the leakage current at the tail end of the equipment by adopting the micro-current sensor has the advantages that the anti-interference capability is stronger, useful signals can be extracted from noise, and the error of system detection is reduced. 本发明提出了一种高压互感器群运行状态实时采集系统，基于高压互感器二次侧电压和泄露电流得出高压互感器的介质损耗，并且将压强、湿度、温度数据与基于二次侧电压和泄露电流分析出的介质损耗进行互相验证，增强了本系统对故障监测的可靠性；采用微电流传感器检测设备末端的泄露电流的方法相比于传统的超声波局部放电检测方法，其抗干扰能力更强，可以将有用信号从噪声中提取出来，减少系统检测的误差。