Abstract: Accurately locating the fault section of the distribution network can have significant implications for improving power supply service satisfaction and optimizing the business environment.At present, the multi-source information fusion distribution network fault location method based on the low-voltage user outage information will still misjudge when the signal of the automated feeder terminal unit (FTU) is distorted, especially when the low-voltage user outage information collection fails, the fault location accuracy is greatly reduced.This paper introduces a FTU switch trip signal to adjust the model input based on the existing framework, ultimately constructing a fault location model with enhanced fault tolerance.The simulation results show that the proposed method has higher accuracy than the method without signal correction when the single fault signal is distorted or the fault information of low-voltage users cannot be collected.