The Design Of Distributed Power Supply Network Fault Recording System

Currently, along with the electric power system's magnification and LAN interlink, the performance of power system becomes increasingly complicated. The fault diagnosis and recording system, as the recording equipment of electrical power system temporary fault process, is incessantly developing and updating. And also make the advanced request to the speed of operation and accurate grade.The paper in detail introduces one kind electric power system's fault diagnosis and record system which based on the distributed structure, exactly it is one kind embedded fault recording device. The whole system is based on the distributed structure, the main function of embedded fault recording device includes fault data acquisition, fault-startup criterion and network data transfers, and data analysis function realizes by the backstage supervisor. It suits in 220～500kV voltage rank electrical power system fault recording. Uses 32-bit RISC microprocessor ARM and the high speed DSP multi-tasking; Use FPGA to design the hardware data sampling controller, to ensure the sampling precision and the sampling synchronization; May record 36 groups analog signals and 80 groups switches signals; Uses distributed and modular design, may dispersedly install in the cabinet, at the same time linked to a management computer or transfer data to the far control center through the 10M/100M Ethernet.The system adopts embedded Multi-task operating system uClinux, which has consummate network function and splendid file system. Because uClinux is not a real-time operating system, we uses RTlinux patch to improve system real-time performance.At present, the hardware system design, the debugging work and the hardware drive have already completed. The uClinux operating system transplant work has already completed. The application software has basic completed and we can use Ethernet to complete the transfers of command or procedure document.