Condition-based Maintenance Decision-making Model for Power System Based on Master-slave Association Sets Decomposition

In the context of the condition-based maintenance, in order to fully consider the functional association between devices, and for the present situation that the existing research on power system functional association regards the power system as the series system, the system condition-based maintenance mathematical model based on master-slave association sets decomposition is proposed. In this paper, in the premise that the law of equipment state change is known, based on the functional association between devices, the power system in this model is considered as an approximate hybrid system, and the concept of the master-slave association set is given. This paper takes the master-slave association set as the unit to perform maintenance decision-making in the study period. Then, based on the idea of opportunistic maintenance, the method of solving the state probability after adding the master-slave association sets to the maintenance plans is given On this basis, the quantitative expressions of equipment individual loss and system operation risk are given, and the system condition-based maintenance mathematical model is established with the minimum of the sum of the two as the goal. And the validity and practicality of the model is verified by the examples.