Research on Multistage Self-healing Planning of Distribution Network based on Genetic Algorithm

The self-healing function of the distribution network can be realized by diagnosing and warning the distribution network before the fault and locating and isolating the distribution network after the fault, so as to ensure the safe and stable operation of the distribution network and the reliable use of electricity by users. In this study, the self-healing function of distribution network is included in the factors of distribution network planning. Taking the whole life cycle as the objective function and the profit maximization as the objective, a multi-stage planning model considering the self-healing function of distribution network is established, and the optimal scheme under multi-stage planning is obtained by using genetic algorithm. In this study, the results of multi-stage planning were used as variables to minimize the full life cycle costs. The results show that although the planning method considering self-healing function has a large investment in the early stage, the profit is more substantial in the long run, and it is beneficial to reduce the operation risk of distribution network.