| 基于超级电容储能的光伏并网低电压穿越研究 |
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| 引用本文： | 舒大松.,黄挚雄,康伦,陈世明.基于超级电容储能的光伏并网低电压穿越研究[J].湖南大学学报(自然科学版),2014,41(8):60-64. |
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| 作者姓名： | 舒大松. 黄挚雄 康伦 陈世明 |
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| 作者单位： | 1. 中南大学信息科学与工程学院,湖南长沙410075;湖南广播电视大学机电工程系,湖南长沙410004
2. 中南大学信息科学与工程学院,湖南长沙,410075 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用超级电容储能配合光伏并网系统实现其低电压穿越功能,在电网电压跌落时,并网逆变器直接功率控制(DPC)的有功参考根据电网电压跌落程度进行给定,同时通过控制双向DC/DC变换器将直流母线侧多余能量存储于超级电容,以平衡逆变器两侧的功率,维持直流母线电压稳定.最后通过仿真验证了采用超级电容储能的协调控制方案的有效性和可行性.
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| 关 键 词： | 光伏发电系统 超级电容 双向DC/DC变换器 直接功率控制(DPC) 低电压穿越(LVRT) |
Research on the Low Voltage Ride-through of Grid-connected Photovoltaic System Based on Supercapacitor Energy Storage |
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| SHU Da-song,HUANG Zhi-xiong,KANG Lun,CHEN Shi-ming.Research on the Low Voltage Ride-through of Grid-connected Photovoltaic System Based on Supercapacitor Energy Storage[J].Journal of Hunan University(Naturnal Science),2014,41(8):60-64. |
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| Authors: | SHU Da-song HUANG Zhi-xiong KANG Lun CHEN Shi-ming |
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| Institution: | (1.School of Information Science and Engineering, Central South Univ, Changsha,Hunan410075,China;2. Department of Mechanical and Electrical Engineering, Hunan Radio & TV Univ, Changsha,Hunan410004,China) |
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| Abstract: | In order to realize the LVRT of the PV power system by using supercapacitor energy storage during the grid voltage drop, the active power reference of the DPC according to the grid voltage sags are given, at the same time by controlling the bidirectional DC/DC converter with voltage and current dual loop, the DC side of excess energy stores in supercapacitors, in order to balance the power on both sides of the inverter and to maintain the DC bus voltage. The proposed scheme is proved to be feasible and effective in MATLAB/Simulink. |
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| Keywords: | photovoltaic power systems supercapacitors DC/DC converters direct power control low voltage ride-through(LVRT) |
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