光伏电力混合储能系统的能量管理策略研究

文章提出了一种光伏电力混合储能系统的能量管理控制策略,主要应用于含有光伏电源(Photovoltaic,PV)、电池能量存储(Battery Energy Storage, BES)和交流负载的发电网络系统中。该策略能够充分利用电力系统中组合架构之间的连接关系,有效缓解了目前电网中BES系统存在的过充电、欠充电等问题,并将充放电电流控制在一个相对稳定的范围内,延长了电池的使用寿命。分别在含有传统铅酸和锂离子电池的混合能量系统中使用6 kVA电源转换器进行实验,结果证明了所提出的能量管理策略的正确性和有效性。

Research on ienergy management of photovoltaic hybrid energy storage system

This paper proposes an energy management control strategy for a photovoltaic power hybrid energy storage system,which is mainly used for off-grid applications that contain smart converters in photovoltaics(PV),battery energy storage(BES)and AC loads.This energy management strategy can make full use of the connection relationship between the combined architecture in the power system and effectively alleviate the overcharge and undercharge problems caused by battery energy storage.Meanwhile,it also can control the charge and discharge current within a relatively stable range,thus extending the service life of the battery.Finally,a series of experiments in a hybrid energy system containing traditional lead-acid and lithium-ion batteries are carried out through using a 6 kVA power converter.The results prove the correctness and effectiveness of the proposed energy management strategy.