补偿电压突变量方向元件
directional protective relay based on fault component of compensation voltage
突变量方向元件
directional protective relaying based on fault component compensating voltage
sudden-change direction element
变方变积矩阵
Variance-covariance Matrix
倒方向变换
transformation by reciprocal direction
对向方向角法
method by reciprocal bearings
多尺度多方向变换
multi-scale multi-directional transform
二维振动方向变换器
two dimensional vibration direction convertor
方向Beamlet变换DBT
directional Beamlet transform DBT