When evaluating the operation and maintenance level of wind farm

the conventional method only considers the quantity of availability and pays no attention to the quality. To solve this problem

this paper proposes the definition and calculation method for the wind energy availability index and availability quality index

on the basis of the availability rate defined in Rules for Reliability Evaluation of Wind Power Equipment

and combining with the effect of wind energy distribution over time. This method comprehensively evaluates the overall operation and maintenance effect of the wind farm from the aspects of maintenance plan formulation

fault early warning and treatment

spare parts management and wind farm weather tracking

which adapts to the wind energy's characteristics of non-controllable. Moreover

this method has been applied in evaluation of operation and maintenance of 86 wind farms of Huaneng Renewables Corporation

and the results proved that it is accurate and efficient

which can accurately evaluate the operation and maintenance level of fans

wind farms and regional companies.