To solve the problem of voltage fault location in secondary circuit nodes of relay protection,this article designs an intelligent substation secondary circuit node voltage fault location method based on neural network.Firstly,establish a database of secondary circuit node voltages and analyze fault data to identify the characteristics of voltage anomalies.Next,generate a fault status matrix and compare it with real-time monitoring data.Finally,a fault localization model is constructed to accurately locate voltage faults in the secondary circuit nodes of intelligent substations.The experimental results show that the method has a localization accuracy of 88.9%for 9 fault samples,with high accuracy and strong ability in handling multi-point faults.
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