Dimensionless evaluation on economic operation of wind farm

Because of the intermittence of wind resource, as well as electricity quantity is determined by the local wind resource, it is difficult to compare the economic operation situations of wind farms of different wind resource and other conditions. Evaluation Indexes of economic operation for wind farms were discussed according to actual operation and monitoring situations of wind farms, as well as influencing factors for economic operation of wind farm. Available wind energy efficiency, earnings rate and maintenance coefficient were proposed as evaluation indexes. And through consistency processing, dimensionless processing and normalizing processing, a comprehensive evaluation system was established. The feasibility of the evaluation system was verified by comparison of three different wind farms. The evaluation indexes were also compared with thermal power, water power, nuclear power and other power industries, the results indicated system efficiency and earnings rate can be used in all power plants, and available wind energy efficiency and maintenance coefficient are of the wind farm´s characteristics.