Comprehensive evaluation and type selection of energy storage based on analytic hierarchy process

Owing to its high controllability and time transfer characteristics， energy storage technology is worth being applied in new-type power systems. The rational judgment of energy storage in various scenarios and the selection with a clear aim are of practical significance. First， 10 types of technical and economic indicators of energy storage are proposed for various demand scenarios of power systems， and a comprehensive evaluation index system of energy storage is constructed. Then， comprehensive evaluation and calculation on the above indexes is carried out by using analytic hierarchy process （AHP）， during which the relative importance of the judgment matrix is valuated by Delphi method， and the consistency check and correction are carried out to solve the combination weight of the scheme layer in relation to the target layer； then， a comprehensive evaluation and calculation of various types of energy storage is performed to obtain an optimal energy storage selection scheme. Finally， a regional power grid is