双馈风电机组叶片变化对低电压穿越性能的影响研究

发布时间：2018-06-29 08:06

本文选题：双馈风电机组 + 低电压穿越　；参考：《可再生能源》2014年12期

【摘要】：风电机组的低电压穿越能力主要采用现场测试的方式考核。由于同种类型和容量的风电机组通常采用多种长度的叶片配置,在其中一种叶片长度的机组完成低电压穿越测试后,是否必须对其它叶片长度的机组进行重新检测是目前制造商和检测机构面临的问题。针对该问题,文章首先分析了不同的风轮直径引起风电机组低电压穿越过程中机械功率、发电机转速、桨距角、有功功率和无功功率等状态量的变化,提出风轮直径变化对机组各部件低电压穿越特性的影响程度;其次,采用Bladed与Matlab联合仿真模型,在与实测数据对比校验其仿真准确性后,通过设置Bladed模型中详细的叶片、传动链等机械参数,仿真对比不同风轮直径的风电机组各环节状态变量的区别,验证了理论分析的有效性;最后,以77 m和82 m风轮直径的1.5 MW风电机组低电压穿越测试数据进行对比分析,进一步验证了理论分析和仿真结果的正确性。研究表明,在一种叶片长度的双馈风电机组完成低电压穿越检测后,采用其他长度叶片的风电机组可通过模型仿真方式对其低电压穿越性能进行分析和评估。
[Abstract]:The low voltage traversing ability of wind turbine is mainly assessed by field test. Since wind turbines of the same type and capacity usually use a variety of blade configurations, after one of the blades has completed the low-voltage traversal test, Whether it is necessary to re-test other blade length units is a problem faced by manufacturers and inspection agencies at present. In order to solve this problem, the paper first analyzes the changes of mechanical power, generator speed, pitch angle, active power and reactive power during the low voltage traversing process of wind turbine caused by different wind turbine diameters. The influence of wind turbine diameter change on the low voltage traversing characteristics of unit components is proposed. Secondly, the Bladed and Matlab combined simulation model is used to verify the accuracy of the simulation, and the detailed blade in the Bladed model is set up after comparing with the measured data. The mechanical parameters such as transmission chain are simulated and compared with the different wind turbine diameters to verify the effectiveness of the theoretical analysis. The correctness of theoretical analysis and simulation results are further verified by comparing and analyzing the low voltage traversing test data of 1.5 MW wind turbine units with the diameter of 77 m and 82 m wind turbines. The results show that when a doubly-fed wind turbine with blade length completes the low-voltage traversing test, the low-voltage traversing performance can be analyzed and evaluated by the model simulation method for the wind turbine with other blades.
【作者单位】：中国电力科学研究院;
【基金】：国家能源应用技术研究及工程示范项目(NY20110406)
【分类号】：TM315

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