Digital Traction Substation Commissioning Operation Design

As the rapid development of our technologies, the conventional comprehensive automatic system has not been able to meet the requirements of the substation management and operation. To enhance the information sharing, improve the interoperability of different devices and so on, people put forward the "digital substation" concept. Compared with conventional substation, digital substation has many advantages, but the time it applied in practice is not long, which began from September2006, and the time applied in traction substation cases are even shorter, the technologies and experience are lacked, so the commissioning is needed to solve these problems.In order to verify the feasibility of digital traction substation, this paper has made the commissioning design, and it mainly includes these contents:1. First, the digital traction substation is briefly introduced, including technical principles, system structure, equipment characteristics, and advantages compared with the conventional traction substation, and then, mainly summarize the key technologies of digital traction substation.2. Second, through analysis and comparison, the design methods of the digital substation’s key technologies are discussed, including electronic transformer, intelligent circuit breaker, communication network, etc, and the improve of the digital system’s reliability is discussed by using redundancy.3. Third, through remaking of a real traction substation, the commissioning digital system is established, and the system’s "fault lead safety" ability is designed combining with redundancy and GO method, and the connection mode of secondary equipment is designed too, focusing on the communication network, and synchronization.4. Finally, function tests for the designed system are formulated, including test contents, test methods, equipment requirements, performance index and so on, and the actual function tests are used as examples.By the researches in this paper, the design of digital system is discussed, and a commissioning digital traction substation is established, and finally, the system function tests are made to detect the correctness of important functions, and to ensure the digital traction operating correctly.