The Application And Optimization Study Of Microcomputer Generation-transformer Unit Protection In Large Generation-transformer Unit

This paper begin with a review of the status and development of China's power system relay protection technology, and detailed explain the history,status and development of generation-transformer group protection.According to the use of WFBZ-01 protection in big generation-transformer group, we introduce the problem of the tests and running of the protection, and give the solutions; and we also brief analyze the correct action,action instance of the tests,running of the protection, when the 3w,3Uo generation stator earth fault protection,out-of-step protection are in misoperation, we have a detail action analysis of unit work experiment, introduce the accident's solution instance, summed up the protection misoperation, point out the shortcomings of the principle of the protection, and give detail improved measures.Finally, this paper discuss the author's experience of the principle of magnetic lose protection and reverse power protection,impedance protection,differential protection setting calculation,stator earth fault protection.