Optimal Control of Flexible Load of Rural Residential Buildings Under the Intervention of Agricultural Machinery Battery
The development of rural household PV is imminent.However,the dynamic matching of supply and demand caused by the random fluctuation of solar energy grows into a major obstacle to the development of rural household PV.With the rapid development of agricultural mechanization and electrification,the electric storage agricultural machinery is becoming more and more popular in rural areas.Using the energy storage battery of agricultural machinery in the idle period to assist the energy storage of residential buildings will become a new way to solve the problem of dynamic matching between supply and demand.This study took typical rural areas in the Guanzhong region as an example to conduct research.Typical farmers were selected to calculate the electricity load of residential buildings and consider the intervention of agricultural machinery and batteries.Under the assumption of installing 3 kW household photovoltaic,a flexible load optimization and control model with economic objectives was established to solve the problem.The results showed that:1)The available time and adjustable power of agricultural machinery battery resources and flexible load resources are highly influenced by seasons and agricultural production activities.2)With time-of-use electricity prices not implemented,the effective storage and discharge of agricultural machinery batteries can increase the photovoltaic consumption rate of typical farmers by 0.15％,5.99％,3.60％,and 8.41％on typical days of summer farming,summer fallowing,transition season fallowing,and winter fallowing,respectively.3)With time-of-use electricity prices implemented,the effective storage and discharge of agricultural machinery batteries can increase the photovoltaic consumption rate of typical farmers by 4.99％,15.56％,16.44％,and 31.48％on typical days of summer farming,summer fallowing,transition season fallowing,and winter fallowing,respectively.In addition,the effective storage and discharge of agricultural machinery batteries can also reduce the peak electricity load of typical farmers by 38.44％,41.94％,54.89％,and 41.54％on typical days of summer farming,summer fallowing,transition season fallowing,and winter fallowing,respectively.4)The effective storage and discharge of agricultural machinery batteries can increase the annual profits from the sales of electricity without time-of-use electricity prices implemented and with time-of-use electricity prices implemented by 18.93％and 51.07％.
demand responseflexible loadagricultural machineryresidential buildingshousehold photovoltaic system
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