An optimisation method of whole-process restoration decision-making of power systems considering disturbance-resisting ability of the restored network

Disturbance-resisting ability (DRA) of the restored network needs to be considered when making a restoration scheme of power systems, to ensure system security and reduce secondary blackout risk. This paper proposes an optimisation method of whole-process restoration decision-making with DRA of the restored network in consideration. Firstly, a load rate balance (LRB) index of the restored network is defined to represent the DRA index during restoration. Then, an optimisation model of whole-process restoration decision-making is established, considering the LRB index of the restored system. To solve the model by a linear programming method, the non-linear terms in the model are transformed into linear forms. Finally, a time-step decoupling method to reduce solving difficultness of the established model with the LRB index is derived, with purpose of accelerating the solving process. The numerical results of the IEEE 30-bus system and a practical power system verify effectiveness of the proposed method to obtain a restoration scheme to balance the system restoration benefit and security.