光伏温室冬季蓄电-储热能源管理研究

Study on Electricity-heat Storage Energy Management of Photovoltaic Greenhouse in Winter

在满足温室供暖需求的条件下,通过改变系统储热量对光伏温室进行供暖实验,探究配置不同光伏容量、蓄电池容量以及储热量的系统经济性与自耗率.结果表明:要满足温室供暖时长达到10 h,且保证温室温度满足夜间草莓生长需求,水箱储热量至少需要在26.25 kW·h以上.在储热量为35.00 kW·h及光伏容量为2.19 kW的系统中,蓄电池容量至少需要14 kW·h,系统才能满足温室供暖的要求且自耗率高于0.8;储热量为35.00 kW·h,光伏容量为4.38 kW,蓄电池容量为4 kW·h的系统成本最低,为1.61元/(kW·h).

Under the condition of meeting the demand for greenhouse heating,the photovoltaic greenhouse is heated by changing the heat storage of the system,and the system economy and self-consumption rate of configuring different photovoltaic capacity,battery capacity,and heat storage were explored.The results show that to meet the heating time of the greenhouse for 10 hours and ensure that the greenhouse temperature meets the needs of strawberry growth at night,the heat storage of the water tank needs to be at least 26.25 kW·h.In the system with heat storage of 35.00 kW·h and photovoltaic capacity of 2.19 kW,when the battery capacity is at least 14 kW·h,the system can meet the requirements of greenhouse heating and the self-consumption rate is higher than 0.8.The lowest system cost is 1.61 CNY/(kW·h)for a heat storage capacity of 35.00 kW·h,a photovoltaic capacity of 4.38 kW,and a battery capacity of 4 kW·h.