基于ARM和FPGA的多通道局部放电检测系统设计

Design of Multi-channel Partial Discharge Detection System Based on ARM and FPGA

变压器局部放电极易引发高压变压器老化故障,通过检测局部放电产生的超声波信号来判断变压器的运行状况,是目前比较常用的检测手段。文章实现了一种基于ARM和FPGA的多通道局部放电检测系统。利用ARM处理器高性能,低功耗,低成本的优势和FPGA高速并行采集的特点,不同于以往由PC和采集卡为主体的局部放电检测仪,系统可以实现现场的实时在线检测。实际测试结果表明:该系统可以在多个通道实时检测出变压器局部放电的放电曲线,同时具备局部放电特性分析的能力。

The partial discharge in transformer can easily lead to the aging of the high-voltage transformer fault. It is a relatively common means that determining the condition of transformers by detect the ultrasonic signal of partial discharge. The design of multi-channel partial discharge detection system is based on ARM and FPGA. By taking the high-performance, the low-power, and the low-cost advantages of ARM, and taking the high-speed parallel acquisition characteristics advantages of FPGA. This design can achieve the real-time online detection in field instead of the previous PC based detection system. The actual test results show that the system can detect the discharge signal of multiple channels in real time, along with the ability to analyze the characteristics of partial discharge.