| 微网系统不平衡电压补偿控制策略 |
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| 引用本文： | 施永,杨向真,苏建徽,赖纪东,茆美琴. 微网系统不平衡电压补偿控制策略[J]. 电力系统自动化, 2017, 41(23): 96-102 |
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| 作者姓名： | 施永 杨向真 苏建徽 赖纪东 茆美琴 |
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| 作者单位： | 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009; 合肥工业大学教育部光伏系统工程研究中心, 安徽省合肥市 230009,合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009; 合肥工业大学教育部光伏系统工程研究中心, 安徽省合肥市 230009,合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009; 合肥工业大学教育部光伏系统工程研究中心, 安徽省合肥市 230009,合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009; 合肥工业大学教育部光伏系统工程研究中心, 安徽省合肥市 230009,合肥工业大学电气与自动化工程学院, 安徽省合肥市 230009; 合肥工业大学教育部光伏系统工程研究中心, 安徽省合肥市 230009 |
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| 基金项目： | 国家自然科学基金资助项目(51577047) |
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| 摘 要： | 微网系统中负荷不平衡会造成系统中电压的不平衡,影响微网系统的供电质量。针对这一问题,文中首先介绍了微网系统逆变器的控制方法,然后基于下垂控制,分析了微网系统电压不平衡的原因。为保证微网逆变器端口和公共耦合点电压能同时满足供电质量标准的要求,提出一种采用微网中储能逆变器对逆变器端口和微网公共耦合点不平衡电压进行同时补偿的控制策略,对所提补偿策略进行了详细的阐述,最后通过仿真和实验分析验证了所提方法的有效性。
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| 关 键 词： | 微网(微电网)；电压不平衡；下垂控制；电压补偿控制；储能逆变器 |
| 收稿时间： | 2017-06-17 |
| 修稿时间： | 2017-09-06 |
Compensation Control Strategy of Unbalanced Voltage for Microgrid |
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| SHI Yong,YANG Xiangzhen,SU Jianhui,LAI Jidong and MAO Meiqing. Compensation Control Strategy of Unbalanced Voltage for Microgrid[J]. Automation of Electric Power Systems, 2017, 41(23): 96-102 |
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| Authors: | SHI Yong YANG Xiangzhen SU Jianhui LAI Jidong MAO Meiqing |
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| Affiliation: | School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China; Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China; Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China; Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China; Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China and School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China; Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Load unbalance in the microgrid can lead to voltage unbalance, which will reduce the power supply quality of the microgrid. To solve this problem, this paper firstly describes the microgrid inverter control method. Then the reason of voltage unbalance in the microgrid is analyzed based on the droop control. To ensure the voltage quality can meet the power supply standard requirements at the microgrid inverter output port and the point of common coupling, an energy storage inverter based unbalance voltage compensation method is proposed, which can simultaneously compensate the unbalance voltage at the inverter output port and the point of common coupling. The proposed strategy is described in details and its performance is verified by simulation in the MATLAB/Simulink software environment and the experiments on the microgrid experimental platform. |
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| Keywords: | microgrid voltage unbalance droop control voltage compensation control energy storage inverter |
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