Research On The Power Capacity Of Industrial Optical Storage Microgrid And The Optimal Configuration Of Its Photovoltaic Array

In recent years,human consumption of traditional energy is increasing,which leads to the crisis of energy and the worsening of living environment.To develop clean energy and improve energy efficiency is the common aspiration of mankind.The distributed photovoltaic power plants are installed on the roofs of industrial enterprises and equipped with reasonable storage energy to build industrial PV-storage micro-grid.This not only makes full use of the idle roof of the enterprise,but also can promote the extinction of photovoltaic,reduce the energy loss of power transmission,and has research and application value.At present,the research on the power supply capacity allocation of the industrial PV-storage system is easy to ignore the power supply reliability of the important load in the industrial enterprises,and the optimized configuration of the PV array structure in the micro-grid under local shadow shading is not analyzed deeply.In this paper,the optimal configuration model of the power supply capacity of the industrial light storage micro-grid is proposed,and the optimal configuration of the PV array structure under local shadow shading is analyzed.Based on the analysis of the characteristics of the electric load of industrial users,the optimal operation strategy of industrial PV-storage micro-grid is put forward.Then,the paper analyzes the cost and the income composition of the industrial PV-storage micro-grid.A multi-objective optimization model based on the maximum annual net income of the micro-power grid and the largest local PV elimination rate was established,and the NSGA-? algorithm was used to solve the optimization model,and the innovation of the research was to consider two variables of PV capacity and energy storage capacity in micro-grid.In the process of the design and construction of the industrial PV-storage micro-grid,the photovoltaic array installed on the roof of the factory is prone to be shaded by the local shadow,which will affect the output characteristics of the photovoltaic array.Firstly,the principle of local shadow shading affecting the output characteristics of photovoltaic array is analyzed,and then the optimal configuration rules of the structure of PV array under local shadow shading are proposed.According to this rule,the PV array structure of two typical industrial roofs with local shading is optimized,and the output power and efficiency of PV arrays are improved effectively.In this paper,an actual construction of industrial PV-storage micro-grid project in Jiangsu Province,the simulation results show that the optimal configuration method of the PV-storage micro-power network can guarantee the power supply reliability of the user's important load during the operation of the micro-grid,and promote the local elimination of PV power generation in the grid operation,and improve the distributed PV capacity.And the storage system also enables enterprises to purchase electricity at the low price of electricity at the peak of electricity prices to supplement the load on the demand for electricity to increase the revenue.At the same time,the optimized configuration method of the PV array under the local shadow shading system can effectively improve the energy efficiency of the PV array module.Therefore,this paper can provide a richer reference for the decision-making of micro-grid investment and operators.