Research On Key Technologies Of Energy Coordination Control Systerm In Park Microgrid

Modern industrial parks have roof photovoltaic cells,energy storage devices,ice storage air conditioning systems and other energy coupling systems.The main contents of this paper focus on how to share solar energy in industrial parks on a large scale,coordinate and control multi-point energy storage,and coordinate the regulation of ice storage air conditioning system.This paper mainly elaborates on the following aspects:(1)The electrical structure of the microgrid group in the park is introduced,and the energy equipment in the microgrid is modeled,and the trend fitting of the historical data of similar days is carried out to predict the power situation of the equipment in the microgrid in the park.This paves the way for the discussion of coordinated control method.(2)Coordination control method of cooling capacity of ice storage system in park is studied.First,the cooling system on decision day is allocated to obtain the additional power demand of the cooling system.Prepare for the coordinated control of electric energy in the following parks;(3)The power regulation capability of the campus sub-microgrid is studied to determine the power range that the sub-microgrid can emit or absorb at the decision-making time.Based on the secondary energy network coordination system of the park microgrid group,The economic dispatching model is established by taking the economy of dispatching operation and transformer loss as the optimization objective function and the energy balance as the constraint condition.(4)The hardware platform of the system is built around smart meter and cloud client,and the software platform of the system is built through Kingview,MATLAB,MySQL and other software.Based on the above research,this paper establishes the energy coordinated control system of the microgrid group in the park.Compared with the traditional energy coordinated control system,the system is more intelligent and the coordinated result is more economical,which improves the defect that the traditional way relies too much on the experience of technicians.The energy coordination method of microgrid group proposed in this paper establishes the secondary network of energy coordination between microgrids,which greatly reduces the photovoltaic discarded light,and also has great significance for peak shaving and valley filling of power system.At the same time,the software and hardware system based on the energy coordination control method can be used for reference in practical engineering.