An Adaptive Reclosing Method for Distribution Networks Based on Active-Passive Fault Detection

Traditional non-check reclosing method might operate at continuous short circuit, causing secondary shock to the distribution networks. To this end, an adaptive reclosing method for distribution networks based on active-passive fault detection is proposed in this paper. Firstly, the characteristic of voltage rise accompanied by fault clearance is applied as passive detection criterion. Additionally, active signal is injected by the converter of distributed energy resources to identify the permanent/transient fault. Then the reclosing is completed through adaptive time delay. Simulation results show that the proposed adaptive reclosing method can identify fault state and close reliably.