| 引用本文: | 古庭,杨骐嘉,林呈辉,等.基于单机等值与选择模态分析的风电场等值建模方法[J].电力系统保护与控制,2020,48(1):102-111.[点击复制] |
| GU Tingyun,YANG Qijia,LIN Chenghui,et al.A wind farm equivalent modeling method based on single-machine equivalent modeling and selection modal analysis[J].Power System Protection and Control,2020,48(1):102-111[点击复制] |
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| 摘要: |
| 随着风电接入电网容量的不断增加，风电接入对系统稳定性的影响愈发明显。因此构建合理的风电场并网模型对研究含风电场电力系统的动态特性具有重要意义。针对风电场的详细建模常常带来模型阶数过高、仿真时间过长等问题，提出了一种基于单机等值与选择模态分析的风电场等值建模方法。该建模方法首先对多台风机进行聚合等效，然后在单机等值聚合模型基础上，应用选择模态分析的方法，进一步降低模型阶数。数值仿真结果表明，该动态等值方法不仅可实现不同风速下多台风机的等值，还能够近似还原多风机系统原始的稳态与暂态行为，从而在风电场并网分析中可显著减小模型阶数，提高计算速度。 |
| 关键词: 双馈风机 聚合模型 模式 选择模态分析 |
| DOI：10.19783/j.cnki.pspc.190116 |
| 投稿时间：2019-01-24修订日期：2019-05-13 |
| 基金项目:国家自然科学基金委青年基金资助项目(51807150);贵州电力科学研究院科技项目(GZKJXM2017 1048)“风电机组运行特性与区域电网稳定性研究研究部分” |
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| A wind farm equivalent modeling method based on single-machine equivalent modeling and selection modal analysis |
| GU Tingyun,YANG Qijia,LIN Chenghui,LIU Mingshun,GU Wei,WU Huawei,ZHANG Yu,LI Yujun |
| (Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang 550002, China;School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;Dispatching and Control Center of Guizhou Power Grid Co., Ltd., Guiyang 550002, China;Duyun Power Supply Bureau of Guizhou Power Grid Co., Ltd., Duyun 558000, China) |
| Abstract: |
| With the increasing of penetration of wind power in the power grid, the impact of wind power on the system stability becomes more and more apparent. Constructing a suitable Double-Fed Induction Generator (DFIG) farm model is the basis for the dynamic study of wind power embedded system. A novel method, based on the single-machine aggregation method and Selection Modal Analysis (SMA), is proposed for the modeling of wind farms in this paper to solve some problems, such as high-order model and long time for simulation. Firstly, multi-DFIGs are aggregated as an equivalent single DFIG. Then, based on the aggregated model, the SMA method is applied to further reduce the model order. The numerical simulation results show that the dynamic equivalent method can not only realize the equivalent of multiple wind turbines under different wind speeds, but also can fit the steady and transient behavior of the system, which can simplify the model and thus improve the computational efficiency. This work is supported by Youth Fund of National Natural Science Foundation of China (No. 51807150) and the Science and Technology Project of Electric Power Research Institute of Guizhou Power Grid Co., Ltd. (No. GZKJXM20171048) “Research on Operation Characteristics of Wind Turbine and Stability of Regional Power Grid”. |
| Key words: doubly fed induction generators aggregated model mode SMA |
