All-scenario-feasible stochastic unit commitment model considering renewable energy integrated into system reserve
The new power system with renewable energy generation as the main body has brought new challenges to the system dispatching.A stochastic unit commitment model considering wind power as the operating reserve is pro-posed to alleviate the reserve pressure brought by the integration of large-scale renewable energy.Firstly,the prob-ability density estimation of wind power prediction error is obtained based on the kernel density method,and the wind power reserve model is established according to the best confidence level.Secondly,we propose an all-scenar-io-feasible dispatching model based on the vertex scenarios with variable uncertainty sets and introduce strong non-anticipative constraints to meet the nonanticipativity of economic dispatching.Finally,in the improved IEEE-24 bus system,the effectiveness of the proposed stochastic unit commitment model is verified by the actual data and is compared with the scenario-based two-stage stochastic optimization.The experimental results show that the proposed model has satisfactory performance,can overcome the defects of numerical scenarios and large computing scale in stochastic optimization,and effectively reduces calculating time.
wind powerdispatching of reserveall-scenario-feasibilitynonanticipative constraints
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