| 新能源电站集电馈线对多变流器并网运行稳定性的影响 |
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| 引用本文： | 严亚兵,苗淼,袁小明.新能源电站集电馈线对多变流器并网运行稳定性的影响[J].电力系统自动化,2016,40(15):86-92. |
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| 作者姓名： | 严亚兵 苗淼 袁小明 |
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| 作者单位： | 强电磁工程与新技术国家重点实验室, 华中科技大学, 湖北省武汉市 430074,国网青海省电力公司, 青海省西宁市 810000,强电磁工程与新技术国家重点实验室, 华中科技大学, 湖北省武汉市 430074 |
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| 基金项目： | 国家自然科学基金重大项目(51190104);国家重点基础研究发展计划(973计划)资助项目(2012CB215100);国家电网公司科技项目(522830140003) |
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| 摘 要： | 风电、光伏等新能源电站中集电系统馈线的分布参数对各个基于LCL滤波器的发电单元变流器谐振特性影响较大,这给变流器控制系统设计带来挑战。为了分析集电系统馈线对多变流器并联运行稳定性的影响,在复频域中采用运算电路的节点导纳矩阵建立了多机系统的数学模型,并分析了模型频率函数特性。分析结果表明,集电系统中不同馈线类型下拓扑形式与馈线长度对变流器的稳定性影响存在较大区别,基于MATLAB/Simulink平台的仿真分析验证了相关结论。
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| 关 键 词： | 多变流器并网系统 电流控制环 集电系统 拓扑 新能源 |
| 收稿时间： | 2015/8/15 0:00:00 |
| 修稿时间： | 2016/3/31 0:00:00 |
Impact of Renewable Power Plant Collector System on Stability of Grid-connected Multi-converters |
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| YAN Yabing,MIAO Miao and YUAN Xiaoming.Impact of Renewable Power Plant Collector System on Stability of Grid-connected Multi-converters[J].Automation of Electric Power Systems,2016,40(15):86-92. |
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| Authors: | YAN Yabing MIAO Miao and YUAN Xiaoming |
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| Affiliation: | State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China,State Grid Qinghai Electric Power Company, Xining 810000, China and State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The distributed parameters of collector feeders on the photovoltaic and wind farm have an important influence on the resonance of converters based on LCL filters, presenting a challenge to converter control system design. In order to investigate the impact of the renewable power plant collector system on the stability of grid-connected multi-converters, a mathematical model for the multi-converter system is developed using the network admittance matrix in the complex frequency domain, and frequency characteristics are analyzed. It is shown that the influence on the stability of converters varies with topological form and feeder length of different feeder types in the collector system. The validity of the relevant conclusions is verified by simulation results based on MATLAB/Simulink. This work is supported by National Natural Science Foundation of China(No. 51190104), National Basic Research Program of China(973 Program)(No. 2012CB215100)and State Grid Corporation of China(No. 52283014003). |
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| Keywords: | grid-connected multi-converter system current control loop collector system topology renewable energy |
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