| Traditional energy systems are mutually independent, decentralized management mode lank of interaction, which is bound to cause energy waste and energy structure is not optimized.Will run independently of electricity, gas, thermal system, and the distributed energy system in a particular area within the scope of integrated management, build regional integrated energy system, is to realize the cold, heat, electricity, gas, solar energy varieties of coordination of complementary and integrated optimization, improve energy utilization ratio and the effective method to improve the energy structure.In this paper, the integrated energy system is taken as the research object, and the modeling, simulation and power flow analysis are carried out based on the interaction and coupling characteristics of different energy networks in the integrated energy system.The main contents of this paper are summarized as follows:1)Based on the integrated energy system energy framework, studied the based modeling of the distribution of source of micro grid system, other equipment level energy links and unit level systems , analyzed energy system for integrated different operating characteristics of each equipment and systems in the department of energy.2) The interaction characteristic of the integrated energy system and modeling and simulation research. In order to reflect the coupling characteristics of the multi energy system,two coupling modes are set up, one is the micro gas turbine, the other is the air conditioning system and the gas boiler. According to the two coupling models, Established the simulation model of the micro gas turbine combined with the power network and the natural gas pipeline network. Finally, an example is used to analysis the mutual influence between the characteristics of micro gas turbine and electric parameters of natural gas pipeline network system.3) The regional comprehensive energy system power flow analysis. First of all, the characteristics of electric energy, gas and heat energy flow in regional integrated energy system are analyzed. According to the characteristics of the power network and the natural gas network,established the power flow model of the integrated energy system, and the energy hub model.Secondly, based on different operation mode, the device coupling characteristic of the mutual influence between different energy sub network and interaction,the way to solving problem of comprehensive energy flow model were researched, unified solution to realize comprehensive energy system with multi energy flow.4) In a development zone integrated energy system as the research example, from the independent system constraints and boundary constraint conditions are analyzed together the operation of the system under different operating mode, to satisfy the constraint conditions of running state put forward the adjusting strategy, to ensure the safe and stable operation of the system, and verified the proposed tidal current model and calculating the effectiveness of the algorithm. |
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