Abstract:In order to realize the economic configuration of fault indicator.This paper improves the objective function of the optimal configuration principle of the existing distribution network fault indicator with the aim of reducing the economic loss. This papertake a small rural 10kV distribution network as an example, explainedthe influence of the branch of the power distribution network on the average time of finding the fault point, so the scheme of fault indicator configuration is simplified. On this basis, taking use of the genetic algorithm to solve the objective functionof the 10kV distribution network.The results show thatthe reasonable configuration of fault indicator is beneficial to reduce the economic losses caused by the failure of the fault. On the basis of the optimalconfiguration of the fault indicator, adding the number of fault indicator is good to reduce the average time to find the fault point.