Multi-objective Optimization Operation of Micro-energy Grid Regarding Multiple Synergistic Interactions
The micro-energy grid is an important carrier to promote the absorption of new energy and carbon emission reduction.It can provide electricity,heat,gas,hydrogen and other types of energy,which is conducive to realize the unified and coordinated dispatching of various energy sources.In this paper,firstly,we proposed a low-carbon micro-energy grid structure with a high proportion of wind power.The electricity and heat systems are interconnected through an energy hub that includes electricity-heat-hydrogen multi-energy conversion and storage.Secondly,we established a multi-objective optimization operation model of the micro-energy grid regarding multiple synergistic interactions,which comprehensively considers the response of the micro-energy grid to the energy price and the node marginal carbon emis-sion intensity of the upper-level energy network,the optimal operation of the distribution network and the heat network itself in the micro-energy grid,the internal flexible adjustment of the electricity-heat-hydrogen energy hub,and the flexibility of the terminal load.The optimization model is transformed into an easy-to-solve mixed integer second-order cone single-objective programming problem through piecewise linearization,second-order cone relaxation,and multi-objective weighted fuzzification.Finally,we interconnected the improved IEEE 33-node power system and the im-proved Bali 32-node thermal system to form a micro-energy grid through the electric-thermal-hydrogen energy hub for simulation verification.The results show that the energy supply and demand considering multiple cooperative interaction has advantages in the system operation economy and low carbon.
micro-energy gridelectricity-heat-hydrogen energy hubmultiple synergistic interactionspower flow constraintsmulti-objective optimization operation
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维普
