This article indicates the principle for ANN bus protection based on function approximation ability,analyzes the functional relation of bus-bar object and builds the ANN model of bus-bar protection.

• 叙述了基于ANN函数逼近能力的母线保护原理,分析了母线保护物理对象的函数关系,构建了母线保护的人工神经网络模型。