Research On Energy Management And Engineering Application Of Park Microgrid

With the construction of the national smart grid,the advancement of power market reforms and the promotion of new energy policies,the importance of microgrid construction has gradually emerged.With the rapid development of rooftop distributed photovoltaics,the construction of efficient,convenient,and small-scale optical storage systems is also accelerating.As an important foothold of the above practice,the park microgrid has gradually realized the transition from the research and experiment stage to the commercial application stage.Based on the research results and engineering applications of domestic and foreign microgrids,this paper designs and builds optical storage microgrids suitable for industrial parks.The microgrid integrates coordinated control and energy management,and has been operating stably for a long time in the park of a company.Firstly,this paper analyzes the typical topological structure and advantages and disadvantages of the microgrid.Based on the characteristics of the industrial park,the topology architecture,hierarchical architecture system,and operation control method applicable to the microgrid in the park are determined.At the same time,the functional module requirements of key equipment in the microgrid system is studied(Micro-grid central controller and micro-grid energy management system(cloud platform)),and detailed introduction of specific modules.Secondly,this paper focuses on the economic operation of the park's microgrid to mathematically model each unit in the system,analyze the costs and benefits in its operating cycle,and achieve the economics of system operation with the goal of minimizing the system operating cost.The sensitivity analysis studies the Impact of influencing factors on system technical and economic indicators.By introducing NPV theory,the benefits of the park microgrid system during the life cycle are analyzed,and the feasibility of the system scheme is demonstrated.Then,based on the park's microgrid including photovoltaic,energy storage,load and electric vehicles,the economic operation model of micro grid in the park with the participation of electric vehicles is constructed by analyzing the travel rules of electric vehicles and the way of participating in microgrid operation to make full use of the electric vehicle resources of employees in the park.It is verified that the participation of electric vehicles can improve the economic efficiency and renewable energy utilization level of the park's microgrid.Finally,the design functions of the park's microgrid central controller and the park's microgrid energy management system(cloud platform)are tested item by item,and the problems found are modified one by one to improve the stability during the later operation.