Cost-estimation-based restoration of active distribution networks considering differentiated customer reliability demands

During the power restoration process in distribution networks, costs and economics are often used as guiding factors for the restoration outcomes. However, the diversity and reliability demands of different customers are also crucial considerations. This paper proposes a cost-estimation-based restoration model with considering the differentiated reliability demands of power customers. The precise estimation of interruption costs across various industrial segments of power customers, as well as the calculation of grid interruption costs and power restoration costs form the cost-estimation-based objective together. Furthermore, an improved radial topology constraint is proposed to achieve the dynamic optimization of micro-grid island numbers in the reconfiguration process. Specially, the reliability demand constraints are proposed in this paper to satisfy the differentiated reliability requirements of power customers, based on the demand analysis of loads according to the sensitivity to reliability indices. The effectiveness and superiority of the proposed model are verified by numerical results of case studies on a modified IEEE-33 node distribution system.