This article explores and establishes comprehensive evaluation index system of wind power accommodation ability considering microscopic index and macroscopic index

and the index system includes conventional evaluation indexes such as forecast deviation

simultaneity factor and anti-peak rate

also newly introduced evaluation indexes such as installed capacity

power adequacy and accommodation space. Bayesian weight modified method is used for solving index weights of 8 wind power accommodation indexes. The paper puts forward a comprehensive evaluation model of wind power accommodation ability based on improved radar chart method

and this model changes traditional radar chart fan-shaped sector to quadrilateral evaluation region

and increasing angle bisector can solve the problem that evaluation results are not unique. It constructs new area and perimeter vectors of radar chart

which make the evaluation results give consideration to level of aggregation and balance degree of evaluation objectives

and case study results show that this model has a certain practical value.