Robust Optimal Dispatch Of Power System With Advanced Adiabatic Compressed Air Energy Storage And Wind Power Generation

Affected by energy shortage and environmental pollution,countries are vigorously developing renewable energy to promote energy transformation.Wind power generation is the most rapid in the development of renewable energy power because of its abundant wind resources and relatively mature technology.However,with the large-scale development of wind power,the volatility,randomness and uncertainty of its output force lead to its safe and stable operation and economy after grid connection.The application of large-scale energy storage technology is one of the effective measures to solve the above problems.In addition,due to the influence of uncertainty factors,the original deterministic power system optimization scheduling is no longer applicable,and robust optimization has been widely concerned because of its economic and security characteristics in uncertain environment.Against the above background,considering the economic,green,pollution-free and energy efficiency characteristics of advanced adiabatic compressed air technology,this paper uses AA-CAES power station system to promote wind power absorption and smooth wind power treatment fluctuations.For the power system with AA-CAES and wind power,a robust optimal scheduling method which can deal with uncertainty factors is proposed.Firstly,considering the operation characteristics of the AA-CAES power station system,the thermodynamic analysis and modeling of the system are carried out,including five processes,such as compression,expansion,heat transfer,heat storage and gas storage,and the operation constraints of the power station are given.Secondly,the uncertainty of wind power output is tested,and the cardinal uncertainty set is used to model it.This paper analyzes and deduces the game relationship in the robust optimization problem of power system with wind power,discusses it,and puts forward a general engineering game model.Lastly,considering the power balance,operation constraints of conventional units and AA-CAES power stations and wind power output interval constraints,the robust optimal dispatching model of wind power system with AA-CAES is established under the framework of engineering game method,the minimum operating cost of the system is taken as the optimization goal,and the dispatching strategy including conventional unit output,AA-CAES power station output and wind power planned dispatching output is formulated.The improved IEEE 30 node system is taken as an example to verify the proposed method.