Distribution Network Based On Embedded Systems To Reconstruct The Experimental Device Development

Distribution Network Reconfiguration (DNR) is a hot topic in the research on distribution network automation system which can improve the network running structure, reduce active loss, and increase network reliability by changing the combination states of section switches and contact switches. Consequently, it is meaningful to design a DNR experiment device on which we can practise the DNR algorithm research and simulate the whole process of reconfiguration.The test bench is composed of four function modules: distribution network circuit simulation module, embedded system module, data acquisition module, and reconfiguration execution module. Among these modules the embedded system module, which is composed of S3C2410X microprocessor based on ARM920T core and Linux embedded operating system, is the center control module. Its main function is to receive the parameters from data acquisition module, run the DNR algorithm, and then output its operation result. The distribution network circuit simulation module is a low voltage distribution network based on IEEE-RBTS Bus2 and Bus 4.The data acquisition module centers about a STC MCU, and its main function is to get the parameters from the distribution network circuit simulation module and then send these parameters to the embedded system module. The reconfiguration execution module chooses a ALTERA FPGA as its processor to implement the order of reconfiguration. Then this paper introduces and analyzes the four function modules about their principle, function, the keys and difficulties about their design, and also develops a DNR algorithm and successfully realizes it on this test bench.Finally, this paper shows the results of the experiment and the points to be improved and developed.