Abstract
Electric switching power is the DC operation power that supply power to power plant and all kinds of transformer substations. The reliability and stability of the DC operation power system relates directly to the security of stations and substations. So by applying the computer technology for monitoring the appearance of circulation of DC operation power system, it plays an important role in improving the reliability and stability of the DC operation power system.
In this design, the history, present condition and development trends of the DC power supply system is introduced, analyzing the function and the technology request of the DC power supply system, designs the total construction of the DC power supply system which based on RS232 communication mode. The device adopts the method of modularization designing. The device consists of Master module and slave module and each module respectively monitors the power transform and power distribution part. The main control Microchip ADuC812 combined with xc95144 CPLD not only has achieved the function of multi-channel A/D and D/A conversions, but also the communication between the computer and the monitor devices.