Optimal dispatch of gas-electric integrated energy system with uncertain power source in market environment
The concept and framework of the interconnected integrated energy system is Analyzed to establish an integrated energy coordination framework for the natural gas market and the electricity market.In the gas-electricity energy system,the uncertainty of power and energy demand is comprehensively considered to establish a comprehensive energy system optimization dispatch model based on mixed integer optimization in day-ahead market stage and the real-time market stage.Two models,comprehensive energy system stochastic optimal dispatch model and a comprehensive energy system sequence optimal dispatch model,are proposed based on the cooperation relationship of gas market and the electricity market.The differences and advantages are analyzed between two models which are all considering constraints of gas supply-demand and physical network requirements analyze.Simulations demonstrate that through the coordinated operation of multiple energy source types,the uncertainty of the demand and supply of multiple energy sources can be balanced on a larger scale to make better use of renewable energy.At the same time,it is pointed out that the sequence opti-mization dispatching model of the integrated energy system is more suitable for the gas-electric integrated energy system.
power market environmentuncertain power sourceintegrated energy systemsequential optimal dispatching model