Allocation Method of Voltage Sag Based on User’s Quantitative Demand

In recent years, the key work of power grid company is to provide voltage sag management service for high-precision and sensitive load. The current voltage sag treatment scheme mainly determines the capacity of the standby power supply through the equipment tolerance assessment, and the treatment cost is too high. In this paper, the configuration method of voltage sags control device is put forward, and the comprehensive benefit evaluation index system of power quality control for power user’s is established, the quality problem of a large number of products caused by voltage sags in the customer’s production line is solved, and the unnecessary economic loss is reduced. The research results presented in this paper effectively reduce the equipment trip, production process interruption, reduce user’s loss, improve product quality.