Line fault distance measurement method and system based on improved RBF (Radial Basis Function) network

The invention discloses a line fault distance measurement method and system based on an improved RBF network, and belongs to the technical field of power system high-voltage direct-current transmission relay protection. Target characteristic quantity is optimized and background noise is removed based on a variational mode decomposition method, and then fault distance measurement is performed based on the improved RBF network; accurate positioning can be realized without accurately calculating a line attenuation constant. 本发明公开了一种基于改进RBF网络的线路故障测距方法及系统，属于电力系统高压直流输电继电保护技术领域，先基于变分模态分解方法对目标特征量进行优化，去除背景噪音，进而基于改进的RBF网络进行故障测距，无需准确计算线路衰减常数也能够实现准确定位。