The simulation of self-healing restoration control for smart distribution network

In this paper, a novel self-healing restoration control method after distribution network faulting is applied to minimize the active power loss. Back-Forward sweep method based on layered node is selected to calculate power flow according to the radial distribution network model. Moreover, in order to avoid closed-loop structure scheme, a new solution which can reduce the dimension of mathematical optimization calculation is offered during network reconstruction process. If the total number of open switches in the system is equal to the number of tie-switches, and at the same time the system has no island, then the network must be the structure without closed-loop. Furthermore, the island judgement is made conveniently by flow calculation program with no need for a special program. The design is implemented to an IEEE16 nodes system by matlab. Simulation result shows that the solutions of reconstruction decrease from 65536 groups to 13 groups. Accordingly, the correctness and validity of the proposed method can be verified, which is simple and easy to be programmed. It is suited to the real-time control for smart distribution network.