Research on the Power State Estimation Based on the Combination of the Innovation Graph Approach and the Current Reckoning Method

The scale of the network determines the need for system partition management, the network block partition estimation makes the state estimation problem of large network converse into two medium or small network. This paper proposes combination of the innovation graph approach and the current reckoning method to form a new partition identification method, which can achieve complementary advantages of the two methods and can performance comprehensive identification. In the process of partition, take several factors related to the regional characteristics and measurement configuration into account, there are differences in different regions by using the innovation graph approach or current reckoning method.