Research on rolling generation dispatch for power system integrated with significant wind power

To cope with increasingly serious global energy crisis and environmental problem, renewable energy, like hydropower and wind power, develops rapidly in power system. This paper mainly focuses on improving the traditional generation dispatch methods which lack effective response to the intermittency and uncertainty of large scale wind power integration. Based on the principle of flexible hydropower preferentially complementing stochastic wind power, the original wind-hydro-thermal hybrid system is decomposed into wind-hydro subsystem and thermal subsystem. A rolling generation dispatch model based on rolling updated wind power is proposed, which rolling corrects units output in power schedule process. By introducing the concept of expected breed rate and elitist preservation strategy, the improved particle swarm optimization algorithm combined with the exterior penalty function is used to solve the proposed model. At last, some test results are illustrated to verify the validity of the proposed rolling generation dispatch model.