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标题：改进的双馈风力发电机功率跟踪控制 |
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作者：张国栋,张洪阳,牟秀玉，等 |
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| 2017年第6期 访问次数：960次 |
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摘要：近年来随着风电装机规模的不断增大，风电接入网后的影响已经得到了广泛的关注。特别是在一些电网薄弱的偏远地区，经常会出现系统级的功率波动，造成难以预计的后果。鉴于目前对风电功率稳定性等方面的研究多集中于风场级，本文直接从单台机组的功率角度出发，结合变流器极限容量的和开环控制的方法，阐述了一种改进的双馈风力发电机（DFIG）功率快速跟踪控制方法。通过突加负载和突减负载，讨论了变流器极限容量对DFIG机组功率控制特性的影响，最后实验验证了分析的正确性，进而为系统级的功率稳定研究提供一定的依据。
关键词：功率波动;变流器极限容量;DFIG;功率跟踪
Abstract: With the continuous increases of wind power capacity, the impact of wind power access to grid is concerned. Certain areas fluctuation in the power is caused specially with weak grid, and this will cause a great of losses. The power stability was studied in wind field level, an improved method of DFIG power tracking control taking into account single generating unit's power with convertor maximum capacity and open loop was expressed here. The control performance of DFIG wind turbine under the convertor maximum capacity through load and unload test. The result of experimental verification showed the correctness, and contribution is achieved for power stability in wind system power side.
Key words: power fluctuation；convertor maximum capacity；DFIG；power tracking control
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