| 引用本文: | 谷怀广,刘栋,米志伟,贾锋,符杨,魏书荣.基于分时间尺度解耦的风电机组气动-机械动态简化表示方法[J].电力自动化设备,2020,40(12): |
| GU Huaiguang,LIU Dong,MI Zhiwei,JIA Feng,FU Yang,WEI Shurong.Aerodynamic-mechanical dynamic simplified representation of wind turbine based on timing-scale decoupling[J].Electric Power Automation Equipment,2020,40(12): |
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| 摘要: |
| 针对现有风电机组建模中气动-机械部分模型对参数依赖大、参数难以获取的问题，基于分时间尺度解耦的原理提出气动-机械动态模型的简化表示方法。首先基于小信号分析方法得出风电机组简化建模的依据并进行误差量化分析，随后基于快慢时间尺度解耦的思想提出一种由风速直接得到发电机转速和输出有功动态的方法，并制定其适应宽风速区间的控制策略。所得气动-机械动态简化模型包含气动、轴系、最大功率跟踪控制，并通过限幅近似模拟变桨作用。该模型既可以直接用于机组发电性能评估，又可以接入任意详细程度的主电气部分模型接口，进而得到用于并网分析的完整机组模型，大幅简化风电机组模型并降低参数依赖。通过将所提模型与详细模型进行对比，验证了简化建模方法的有效性和精确性。 |
| 关键词: 风电机组 分时间尺度 简化建模 小信号分析 时域仿真 |
| DOI：10.16081/j.epae.202011027 |
| 分类号:TM614 |
| 基金项目:国家电网有限公司总部科技项目(构建海上风电集群的数字化能源平台的关键技术研究)(4000-201999532A-0-0-00) |
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| Aerodynamic-mechanical dynamic simplified representation of wind turbine based on timing-scale decoupling |
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GU Huaiguang1,2, LIU Dong1,2, MI Zhiwei1,2, JIA Feng3, FU Yang3, WEI Shurong3
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1.State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co.,Ltd.,Beijing 102209, China;2.Beijing Key Laboratory of DC Grid Technology and Simulation, Global Energy Interconnection Research Institute Co.,Ltd.,Beijing 102209, China;3.College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
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| Abstract: |
| In order to solve the problem that the aerodynamic-mechanical part of the wind turbine model depends heavily on the parameters, while the parameters are difficult to obtain, a simplified representation method of the aerodynamic-mechanical dynamic model is proposed based on the principle of timing-scale decoupling. Firstly, based on the small-signal analysis method, the basis for simplified modeling of wind turbine is obtained and the quantitative analysis of error is carried out. Then, based on the idea of fast and slow timing-scale decoupling, a method to directly obtain the generator speed and active power dynamics from the wind speed is proposed, and the control strategy to suit wide wind speed range is formulated. The proposed aerodynamic-mechanical simplified model includes aerodynamics, shafting, and maximum power tracking control, and approximates the pitch effect through limiting amplitude. The model can not only be directly used to evaluate the generation performance of the wind turbine unit, but also can be interfaced with the main electrical model at any level of detail to obtain a complete unit model for grid connection analysis, thereby greatly simplifying the wind turbine model and reducing parameter dependence. By compa-ring the proposed model with the detailed model, the effectiveness and accuracy of the simplified modeling method are verified. |
| Key words: wind turbine timing-scale simplified modeling small-signal analysis time domain simulation |
