| Vigorous development of clean energy construction for the adjustment of China’s energy structure,improve the ecological environment is of great significance.The abundant and unused rooftop resources in rural areas provide good prerequisites for the promotion of household PV,and China encourages the steady promotion of rural distributed PV power generation construction,but the proportion of rural household PV is generally low for self-use,and the large-scale distributed PV grid connection will cause a certain impact on grid stability,making the development scale of rural household PV subject to certain constraints.By analyzing the operational characteristics of distributed PV system,based on the principle of maximizing the consumption of PV power generation in the vicinity,the configuration of household PV storage capacity is optimized,which can reduce the overall cost of electricity for users on the one hand,and on the other hand,it can improve the ability to consume clean energy in the vicinity and reduce the residual power of distributed photovoltaic power generation connected to the power grid,which helps to improve the stability and reliability of the regional distribution network.This paper investigates the optimization of the configuration of energy storage capacity for household PV systems in rural areas,aiming to increase the proportion of household PV power generation for self-consumption,reduce the amount of grid electricity,and lower the cost of electricity for customers.The article analyzes the influencing factors and load characteristics of rural household electricity consumption,constructs a whole life cycle cost and benefit calculation model for household PV systems,and adopts financial net present value(FNPV),financial internal rate of return(FIRR)and payback period as the main evaluation parameters for the economic benefits of rural household PV energy storage systems.Considering the constraints of PV output characteristics,real-time power balance and energy storage charging and discharging safety,an optimization model is constructed to optimize the capacity configuration of household PV storage with the objective of optimal economic benefits of the household PV system.The calculation results show that the deployment of reasonable capacity of energy storage batteries for the household PV system,the use of energy storage to store the unconsumed PV power during the daytime,and the release of electricity to supply electricity to customers during the night time,can reduce the power of household photovoltaic connected to the power grid and significantly improve the economic and environmental benefits of the system.Based on the configuration of energy storage battery,the scheduling management of residential household adjustable load is considered to further improve the self-consumption ratio of household PV power generation and optimize the economy of household optical storage system.Finally,the reliability of the optimization scheme proposed in this paper is verified by sensitivity analysis.The study on the optimization of rural household photovoltaic power generation storage configuration can provide a decision reference for rural clean energy construction in the context of new power system construction. |
PDF Full Text Request