The Research Of Cable Fault Detector Based On SOPC

Electric cable is widely used in power system. It is very important to increase the reliability of power system by troubleshooting cable faults as soon as possible. The precision, efficiency and function of Cable Fault Detector depend on its core-processor's computation and control ability. At present, the development of Cable Cault Detector is mainly based on single chip, and it has not performed well in computation, analysis, measurement and intelligent control. Therefore, it is significant to make further research on more advanced Cable Fault Detector, which has great adaptablity to the modern society with high technology.In this paper, domestic and international Cable Fault Detectors are compared and analyzed. Based on the development and requirements on Cable Fault Detector, a solution of SOPC (System On a Programmable Chip)-based Cable Fault Detector is presented. This solution embeds Nios II processor in the FPGA chip to construct system control unit, which has high execution speed, high efficiency and strong real-time ability. Meanwhile, the solution uses Megacore fuctions to generate FFT module, which realizes the Self-Correlation arithmetic to calculate fault distance and estimates the fault type. Besides, the solution uses Avalon bus to customize high-speed data path, SDRAM controller, LCM controller,...