Abstract: The effective evaluation of microgrid is an important reference for the planning，construction and

operation of microgrid. The comprehensive evaluation index system of microgrid planning was constructed step by

step from three aspects of composition structure evaluation，technical evaluation and benefit evaluation. In view of the characteristics of the comprehensive evaluation of microgrid planning scheme，such as numerous evaluation

component types and open range，different standardization strategies were designed according to the evaluation

component of different characteristics，especially for some indicators with maximum and minimum values.

Arctangent and negative index mapping functions were introduced to reasonably map the evaluation indicator range to [-1，1]. At the same time，the quantitative results could reflect the deviation between the ideal value，and form a set of index classification quantitative method suitable for the comprehensive evaluation of the current microgrid planning scheme. Finally，three different planning schemes of a typical microgrid were comprehensively evaluated with analysis hierarchy process （AHP）. The case results verify the effectiveness of the quantization method.

      Key words: microgrid；planning；comprehensive evaluation；classification and quantification