Abstract: A terminal configuration optimization method based on the combination of depth-first search and genetic algorithm is proposed. This method uses each load point as the starting point to search the main circuit and sub-circuit in the distribution network with distribution terminals. The search simultaneously judges the influence of current faults on the reliability of power supply at load points and accumulates. By constructing the selection conditions of selection operators, the depth-first search can be carried out. The combination of reliability calculation method and genetic algorithm can solve the optimization problem of distribution terminals quickly, and can be easily programmed on computer. It can also solve the optimal terminal configuration of different distribution networks on the premise of modifying only the basic parameters of the network. The calculation example takes different average power supply availability as constraints, and analyses the terminal configuration scheme and economic benefits under different constraints, which verifies the effectiveness of the proposed algorithm.

Key words: reliability, terminal optimization, recursively searching, genetic algorithms