Commissioning Research Of The PSL602 Line Protection

The automation technology of the substation has being developed very fast for recent years, many substation automation systems have been run into working. Also the microcomputer protection, as the important applying of substation automation system, has developed rapidly, and it has been applied to electric power system widely. It has made outstanding progress of the micro-computer protection device in the speed and accuracy as well as reliability. But the logic operation of the micro-computer protection device is not intuitionistic and results in testing difficulty. This paper discusses emphatically the testing demand, the testing technology and testing experience based on the basic principle of digital PSL 602 line protection,. Following are the details:1. Firstly, the paper summarizes the condition of relay protection and test technology and illustrates the technology requirement of the microcomputer test device. Because the complicacy of the protection device have been developed continuously, the knowledge involved in protection test are very extensive, the methods of test are various and the practice problems to be meet are very complicated2. Secondly, the paper discusses the basal protect function and configure of the PSL602 line protection device and stresses the protect function such as vertical association protection, distance protection, zero sequence protection and auto-recloser The above protect function in detail and specific test schemes and procedures are put forward.3. Finally, the paper analyses and discusses the output interface of the protection device and protection related device, export relay as well as secondary circuit. The solutions are brought forward combined problems of the PSL602 protection device and design drawing .Above the research achievements give the directive suggestion and requirement to relay protection testing personnel about debugging the PSL602 line protection device.