The weighting of nth harmonic based on cardinal grey relational grade

The harmonic analysis in power system field is very important and necessary, but the past evaluation method is still fuzzy and the solution is nonunique. Therefore, in this paper, we use the grey method to solve the disadvantage, and present a new approach for the harmonic analysis. First, we based on the traditional grey relational grade and the distinguishing coefficient is modified to create the cardinal grey relational grade as our mathematics model. Second, we develop a grey relational matrix to do the weighting analysis for n^th harmonic. Third, we use the computer library in Chien-Kuo Institute as our example, and use it in the analysis of n^th harmonic weighting that uses the cardinal grey relational grade.