Application of Comprehensive Evaluation Method Integrated by Delphi and GAHP in Optimal Siting of Electric Vehicle Charging Station

The Analytic Hierarchy Process (AHP)´s judgment matrix is used to quantify a variety of qualitative factors. Combined with the original quantitative information, the integrated decision will be made. This article uses the Delphi to solve the personal one-sidedness problem of expert judgments. The Grey Analytic Hierarchy Process (GAHP) is made up of AHP and grey statistics decision which can handle the uncertain grey factor. Delphi and GAHP are used to form a new comprehensive evaluation method. This new method is applied to make up the comprehensive evaluation index system of electric vehicle charging station hail and define indicators´ weights. Based on this, the rationality comprehensive evaluation value of each optional hail will be defined and provide the basis for optimal decision of charging station locating. A practical example proves that this method has good practicability.