The invention discloses a
dynamic screening and comprehensive weight setting method for low-
voltage transformer area
line loss rate analysis indexes, including the following steps of: collecting and summarizing low-
voltage transformer area
line loss rate analysis indexes, and establishing a first-level
index system of a low-
voltage transformer area
line loss rate; dynamically screening the first-level
index system by a
principal component analysis, screening out a low-dimensionality second-level
index system of the low-voltage transformer area line
loss rate, using the low-voltage transformer area line
loss rate as a third-level index, and thereby obtaining the dynamic index
system, including three levels, of the low-voltage transformer area line
loss rate; working out the comprehensive weight of the second-level indexes to the third-level indexes in the dynamic index
system by a step analysis-
factor analysis method, and assessing the contribution rate of each second-level index to the low-voltage transformer area line loss rate according to the obtain comprehensive weight. According to the
dynamic screening and comprehensive weight setting method provided by the invention, on the one hand, a reference base is provided for analyzing the low-voltage transformer area line loss rate by a power supply enterprise; in addition, the contribution rates of the indexes to the line loss rate are assessed, thus being conductive to assisting the power supply enterprise to perform targeted management and transformation to the low-voltage transformer area line loss rate.