The wind resource has the intermittence characteristic, and the electricity quantity of a wind farm is determined by the local wind resource. In practice, it is difficult to compare the economic operation situations of wind farms in different conditions. Evaluation indicators of economic operation for wind farms are discussed according to actual operation and monitoring situations of wind farms. The high/low frequency ride through of wind farms, the low voltage ride through of wind turbines, the SVC/SVG dynamic response characteristics and the ability of active power control are used for evaluation on wind farms. Then through consistency processing, dimensionless processing and weight calculating, a comprehensive evaluation method based on the variation coefficient method and the distance integrated evaluation method is established. The effectiveness of the evaluation system is verified by comparison of three different wind farms. Finally, the operation conditions of all the wind farms are ranked by the obtained relative approach degrees.
Multi-time scale energy management of wind farms based on comprehensive evaluation technology