A Comprehensive Method for Power Quality Evaluation Based on Weighted Vertical Distance
To realize the intuitive and practical performance of power quality comprehensive evaluation,this paper presents a comprehensive method based on the orthogonal projection approach,which replaces Euclidean distance with vertical distance,and adds weight to the vertical distance.The weight of each indicator is calculated by the information entropy and the calculation formula is derived.The evaluation method which combines the orthogonal projection approach with the entropy weight method can improve the evaluation result validity.Finally,in comparison with the catastrophe decision theory and the TOPSIS approach,the orthogonal projection approach is proved to be practical and accurate.
power systemorthogonal projection methodcomprehensive evaluationelect ricit y market
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