文章摘要
汤雪松,殷明慧,李冬运,等.变速与变桨协调的风电机组平滑功率控制[J].电力系统自动化,2019,43(2):112-120. DOI: 10.7500/AEPS20180319009.
TANG Xuesong,YIN Minghui,LI Dongyun, et al.Power Smoothing Control of Wind Turbine Generator via Coordinated Rotor Speed and Pitch Angle Regulation[J].Automation of Electric Power Systems,2019,43(2):112-120. DOI: 10.7500/AEPS20180319009.
变速与变桨协调的风电机组平滑功率控制
Power Smoothing Control of Wind Turbine Generator via Coordinated Rotor Speed and Pitch Angle Regulation
DOI:10.7500/AEPS20180319009
关键词: 风力发电  平滑功率控制  桨距角  动能缓冲  变速控制  变桨调节
KeyWords: wind power generation  power smoothing control  pitch angle  kinetic energy buffer  rotor speed control  pitch angle regulation
上网日期:2018-10-26
基金项目:国家自然科学基金资助项目(61673213);江苏省电力有限公司科技项目(J2017046);江苏风力发电工程技术中心开放基金资助项目(ZK18-03-02)
作者单位E-mail
汤雪松 南京理工大学自动化学院, 江苏省南京市 210094  
殷明慧 南京理工大学自动化学院, 江苏省南京市 210094 ymhui@vip.163.com 
李冬运 南京理工大学自动化学院, 江苏省南京市 210094  
刘建坤 国网江苏省电力有限公司电力科学研究院, 江苏省南京市 211103  
周连俊 新疆金风科技股份有限公司, 新疆维吾尔自治区乌鲁木齐市 830026  
邹云 南京理工大学自动化学院, 江苏省南京市 210094  
摘要:
      考虑到风电功率秒级波动对电网频率稳定的影响,需要对风电机组输出功率进行平滑控制。现有依靠风电机组实现风电功率平滑控制的方法大都存在频繁变桨的问题。为此提出了协调变速与变桨的平滑功率控制方法。该方法通过分离桨距角的上调和下调动作,将传统的基于变桨调节的恒转速(转速上限)控制转变为转速区间控制,使风轮机能够在任意桨距角下变速运行,从而更大程度地利用风轮机动能来平滑风电功率波动。因此,该方法在保证平滑控制效果的同时,能有效降低变桨动作频率和幅度,并减小变桨伺服机构的疲劳和叶片载荷。最后,基于风电机组模拟器的实验验证了所提方法的有效性。
Abstract:
      Considering the fluctuation of wind power in seconds exerts an influence on the frequency stability of power grids, it is required to smooth the output power of wind turbine generators. Currently, the wind turbine-depended methods for smoothing wind power usually lead to frequent pitch adjustment, therefore, a power smoothing control method coordinating the rotor speed and pitch angle regulation is proposed. By separating the upward and downward regulation of pitch angle, the conventional constant-speed(upper speed limit)control is redesigned as the rotor speed range control so that the variable-speed operation at any pitch position is available and the kinetic energy buffer of wind rotor can be more adequately used to smooth wind power fluctuations. Correspondingly, while guaranteeing the smoothing effect, the proposed method can effectively reduce the frequency and amplitude of pitch actions, and alleviate the pitch servo fatigue and blade stress. Finally, the proposed method is verified by the wind turbine simulator based experiments.
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