Energy Optimization Of Microgrid With Distributed Energy

Micro grid technology and distributed power technology has become effective ways to solve the global environmental problems and energy crisis. With the development trend of centralized power supply to distributed power supply, the energy optimization of microgrid which includes distributed energy has very important value on theory and engineeringThis paper combines solar with cold and hot electricity co-generation, a system which can realize the comprehensive utilization of photovoltaic/thermal solar energy and meet the system need of cooling, heating and electricity load (PVCU-CCHP) is designed. The index of energy, environment, economic and comprehensive evaluation also are disigned. At the same time the two kinds of operation mode, ordering power by heating and ordering heating by power are set. And the three different control strategies are respectively set. With the example system, the operation optimization and capacity configuration of system are analyzed. This paper can provide the reference for the integrated application of solar energy in the combined cooling heating and power system.Based on the above basis, the other kind of solar CCHP——Photovoltaic solar-thermal integration CCHP (PVST-CCHP) is designed, At the same time two kinds of operation modes:ordering power by heating and ordering heating by power are set. Based on the life cycle, the indices of energy, environment, economic and comprehensive evaluation are established. With the separation production as a reference, the operation control strategies of PVST-CCHP and PVCU-CCHP are evaluated with a case in point as an example. And the capacity configuration of the optimal system is studied by paticle swarm optimization, Then the maximize comprehensive benefit of CCHP can be implemented.At last, the microgrid which includes variety of distributed power such as photovoltaic arrys, wind turbines is set. Comprehensively considering the operation cost and the pollutant treatment cost of the microgrid system, the maximum comprehensive benefits are set as the objective function for the dynamic economic dispatch. Then the influence of uncertainty factors such as the fluctuation of the renewable energy, load fluctuation error, fault shutdown of the unit, the different operation scheduling strategies and batteries on dynamic economic dispatch are analyzed by example system. The results can provide the reference to the research of microgrid dispatch.