To characterize the operation risk of wind power, the concept of wind power fluctuation costs is proposed, the environmental benefits of wind power integration are calculated from the perspective of wind power, which can reflect the environmental benefits of wind power more clearly. An improved economic dispatch model is proposed based on the comprehensive power generation costs calculated by the operating costs of thermal power units, wind power fluctuation costs and environmental benefits. The planned output of thermal and wind power is taken as the decision variables and solved by particle swarm optimization, and the economic change law of wind power integration is explored. The effectiveness and practicability of the proposed model are verified by IEEE 39-bus, 118-bus system.
Keywords renewable energy generation, optimal allocation, operation risk, environmental benefits