The Research Of The Integrated Energy Station Planning Of Multi Energy Coordination And Energy Storage In Industrial Parks

Through the coupling and coordination of demand response,an integrated energy system can convert heat,electricity,cold,and gas into an organic whole,thus reduce the huge waste of energy during energy consuming valley hours and load difference between energy consuming peak hours and valley hours,finally to improve the energy efficiency of the whole system and the equipment efficiency,economic benefit,and to realize the comprehensive benefit maximization system.The integrated energy system is becoming an important direction of future energy system development.The integrated energy system planning is used to guide the configuration and design of the integrated energy system and lays the foundation for the operation and control of the integrated energy system study.It is a basic part of the integrated energy system research,and plays a crucial role.The integrated energy system is composed of integrated energy station,distributed energy station and energy supply network.The integrated energy station can centrally supply all kinds of cold,heat and electric loads,and is at the core position.The planning of the integrated energy station involves the optimization of all kinds of energy equipment and the position of the station.In this study,the optimization of the equipment capacity configuration of the integrated energy station is selected as the research object.The research focuses on the coordinated operation strategy of the multi energy conversion equipment and the joint planning with the energy storage.Typically,an integrated energy station includes heat pumps,steam turbines,gas turbines,gas boilers,condensing steam turbines,electric boilers and other energy supply equipment;cold storage,heat storage,power storage and other energy storage equipment,as well as wind power,photovoltaic and other renewable energy power generation equipment.The integrated energy station planning is divided into the optimization of the lower level of the equipment operation and the configuration of the upper level of the equipment.For the lower the device operation simulation and optimization,first need to establish the relationship between the energy efficiency and energy conversion equipment model;then build the constraint equation of each equipment operation,power balance constraint equations including real-time cold,heat and electricity,gas and other energy and energy storage in a running period by the integral the real-time power balance equation of energy balance equation.Then the whole system is taken as the main body to establish the objective function to optimize the operation of each equipment.Considering the real-time power constraints of each device(capacity constraints and other constraints),the optimization solution is needed.In order to improve the speed of solving,the constraints of simulation of multi energy equipment in cooperative operation is linearized.For the upper range optimization,the range of change of each equipment capacity is given as a constraint condition to optimize the equipment capacity.Considering the system efficiency constraint system in the overall results,the life cycle cost is chose as the goal to establish the objective function to be optimized.The particle swarm algorithm is used to optimize the nonlinear process.The optimization results are obtained through a number of iterative processes between the lower layer optimization and the upper layer optimization.Finally,the capacity planning process,results and analysis of the energy storage and multi energy cooperative equipment in the comprehensive energy station are given in chapter 5 as an example.The analysis results show that the comprehensive energy station can effectively reduce energy waste and reduce peak valley load difference through energy storage and multi energy cooperation,thereby improving the energy efficiency and equipment utilization of the entire energy system.