摘要
受光照、温度等自然条件影响,光伏电源输出有功功率具有较大的波动性。因此,本身既非恒压源又非恒流源的光伏电源并网运行时会产生一系列问题,如对电网冲击性大、需增加旋转备用容量、难以参与电网调度等。利用电池储能系统来控制有功功率输出,可以使平滑光伏电源功率波动成为可能。研究了光储联合发电系统的运行模式,提出了适用于光储联合发电系统的拓扑结构和控制策略,并对储能用功率转换系统(PCS)进行了分析和设计,最后基于某光伏电站的实际历史运行数据,对所提出的方案进行仿真研究,仿真结果验证了光储联合发电系统控制策略的有效性和可行性,为光储联合运行示范工程提供了一定的理论依据和有力借鉴。
Due to weather conditions, the output power of Photovoltaic （PV） systems often experience significant fluctuation. The PV power is therefore neither a constant voltage source nor a constant current source. This can lead to a series of issues when connected to a power grid including power surge, requirement of more spinning reserve capacity and difficulties in participating power grid dispatching. The use of energy storage could improve the quality of PV output via controlling the power output. In this article, a Photovoltaic - Energy Storage Hybrid System is proposed and topology diagram and a control strategy are presented. A power converter system （PCS） is designed and analyzed for the energy storage system. These are validated through simulation using operation data of a real PV power station.
出处
《储能科学与技术》
CAS
2013年第3期300-306,共7页
Energy Storage Science and Technology
关键词
光储联合发电系统
功率转换系统
双向DC
DC变换器
网侧变流器
控制策略
solar photovoltaic-energy storage hybrid system
power converter system
bidirectional DC/DC converter
grid-side converter
control strategy
