Design and Implementation of Partial Discharge Acquisition System Based on FPGA

This paper designs and implements a FPGA-based partial discharge signal acquisition system based on the needs and challenges of partial discharge detection technology. Partial discharge is an early warning signal of insulation failure of power equipment. The real-time and accuracy of detection are crucial to ensure the stability of the smart distribution network. The advantage of ultrasonic detection method is that it has strong anti-electromagnetic interference ability, especially in a strong electromagnetic environment, it can provide stable detection results. The hardware design includes ultrasonic receiving module, signal conditioning circuit, signal acquisition circuit, and control and signal processing circuit. The ultrasonic module uses a 40kHz sensor to receive signals, the conditioning circuit realizes envelope detection through AD8310, and the data acquisition is completed by the high sampling rate 3PA1030 ADC. The control part is based on Xilinx Artix-7 FPGA design, integrating data caching, transmission and clock management functions. The software part adopts a top-down design method to construct signal reception and transmission, module configuration, data acquisition and transmission processes to ensure the functional integrity and data stability of the system. Experimental verification shows that the system can accurately capture and process partial discharge signals, and the test results meet the design expectations, with high reliability and practicality. The successful implementation of this system provides effective technical support for the application and promotion of partial discharge detection technology, and also lays the foundation for real-time monitoring and fault diagnosis of smart distribution network equipment.