引用本文:张卫东,刘祖明,申兰先.利用储能平抑波动的光伏柔性并网研究[J].电力自动化设备,2013,33(5):
ZHANG Weidong,LIU Zuming,SHEN Lanxian.Flexible grid-connection of photovoltaic power generation system with energy storage system for fluctuation smoothing[J].Electric Power Automation Equipment,2013,33(5):
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利用储能平抑波动的光伏柔性并网研究
张卫东1,2, 刘祖明1, 申兰先1
1.云南师范大学 太阳能研究所 云南省农村能源工程重点实验室 教育部可再生能源材料先进技术与制备重点实验室,云南 昆明 650092;2.成都军区昆明总医院,云南 昆明 650032
摘要:
以光伏柔性并网为研究对象,目的是通过光伏方阵整个白天的波动功率曲线找到满足并网标准的储能系统定额,采用实际气象数据驱动的光伏方阵输出功率仿真结合低通滤波算法的研究方法,在满足并网标准的1 min最大变化量和10 min最大变化量的前提下得到储能系统定额,针对选定的功率曲线探讨了低通滤波器时间常数与储能系统定额的关系。结论:在光伏电站中引入储能系统,可实现光伏柔性并网;时间常数越大,波动平抑效果越好,与此同时对储能系统容量和功率的需求更高;柔性并网所需储能系统定额主要取决于多云天气下的辐照波动强度。
关键词:  光伏发电系统  柔性并网  储能  平抑波动  低通滤波算法
DOI:
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基金项目:科技部科技攻关计划资助项目(0170152211009)
Flexible grid-connection of photovoltaic power generation system with energy storage system for fluctuation smoothing
ZHANG Weidong1,2, LIU Zuming1, SHEN Lanxian1
1.Solar Research Institution,Key Laboratory of Yunnan Provincial Renewable Energy Engineering,Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology,Ministry of Education,Yunnan Normal University,Kunming 650092,China;2.Kunming General Hospital of Chengdu Military Command,Kunming 650032,China
Abstract:
The fluctuating power curve of PV(PhotoVoltaic) array during day is investigated and the capacity of energy storage system is set for the flexible grid-connection of PV power generation system. The real meteorological data of a PV power station are applied and,combined with the low-pass filter algorithm,the capacity of its energy storage system meeting the requirements of PV grid-connection standard for the maximum power variation rate of both 1 min and 10 min is obtained. The relationship between filter time constant and energy storage capacity is discussed for the selected power curves. The conclusion is that,the flexible grid-connection of PV power system can be realized by the integration of energy storage system;the greater the filter time constant is,the better the effect of fluctuation smoothing is and the higher the power and capacity needs of energy storage system are;the energy storage capacity is mainly determined by the irradiance fluctuation in cloudy day.
Key words:  photovoltaic power generation system  flexible grid-connection  energy storage  fluctuation smoothing  low-pass filter algorithm

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