Brittleness entropy of complex system based protection of microgrid

Microgrid has become an important auxiliary method to solve many problems of the power system in some developed countries. There are many distributed generation in the microgrid, that will lead the fault of traditional over stage current protection. The microgrid is looked as a complex system. In order to solve the problems of the protection of the Microgrid, this paper will use brittleness entropy of the complex system. The protection of the microgrid is divided into the system level protection and the unit level protection. The negentropy is used to the system level protection and the brittle link entropy is used to the unit level protection. The flowchart of the microgrid protection is given at last.