A supply restoration method of distribution system based on Soft Open Point

Soft Open Point (SOP) refers to a novel power electronic device installed in distribution system to replace the traditional tie switch. The application of SOP will promote the flexibility and resilience of the distribution system. Under a fault condition, SOP enables to provide voltage support and helps to expand the scope of power supply for the supply restoration. In this paper, a supply restoration model of distribution system is established based on SOP, which is essentially a complex nonlinear programming problem. The primal-dual interior-point algorithm is adopted to solve the problem, which can find the optimal solution rapidly and accurately. Then, the modified IEEE 33-node system is used to verify the effectiveness and efficiency of the proposed method.