Research on the Application of Partial Transmission Network Reconfiguration in Power Grid Equipment Maintenance Scenarios

Aiming at the impact of transmission equipment maintenance on power grid security and measures resources, this paper studies the feasibility of applying partial transmission network reconfiguration in maintenance scenarios. Based on the DC power flow model, a partial reconfiguration optimization model of transmission network is constructed. Taking the branch switching cost as the main objective and considering the system loss comprehensively. The constraints consider the influence of power flow over-limit under the condition based on maintenance and expected faults. In order to improve the computational efficiency and avoid the dimension explosion problem in the conventional optimization model, this paper also proposes a strategy by limiting the set of switchable branches to reduce the number of integer variables and eliminate redundant constraints in the model, thereby reducing the scale of the model solution. Finally, the effectiveness is verified by testing a provincial power grid model. It means that the method proposed has practical significance for improving the enforceability and efficiency of maintenance scheduling.