文章摘要
姚琦,刘吉臻,胡阳,等.含异步变速风机的风电场一次调频等值建模与仿真[J].电力系统自动化,2019,43(23):185-192. DOI: 10.7500/AEPS20181120004.
YAO Qi,LIU Jizhen,HU Yang, et al.Equivalent Modeling and Simulation for Primary Frequency Regulation of Wind Farm with Asynchronous Variable-speed Wind Turbines[J].Automation of Electric Power Systems,2019,43(23):185-192. DOI: 10.7500/AEPS20181120004.
含异步变速风机的风电场一次调频等值建模与仿真
Equivalent Modeling and Simulation for Primary Frequency Regulation of Wind Farm with Asynchronous Variable-speed Wind Turbines
DOI:10.7500/AEPS20181120004
关键词: 一次调频  异步变速风机  线性化模型  间隙度量  等值模型
KeyWords: primary frequency regulation  asynchronous variable-speed wind turbine  linearization model  gap metric  equivalent model
上网日期:2019-10-15
基金项目:国家自然科学基金资助项目(U1766204);河北省重点研发计划资助项目(18214316D);中央高校基本科研业务费专项资金资助项目(2017XS075)
作者单位E-mail
姚琦 华北电力大学控制与计算机工程学院, 北京市102206 hooyoung2011@gmail.com 
刘吉臻 华北电力大学控制与计算机工程学院, 北京市102206
新能源电力系统国家重点实验室(华北电力大学), 北京市102206 
 
胡阳 华北电力大学控制与计算机工程学院, 北京市102206  
孟洪民 国网信息通信产业集团有限公司, 北京市 102211  
摘要:
      风机参与系统一次调频目前已成为各国电网对风机并网的基本要求,但是适用于预测控制等算法的大型风电场频率响应动态特性数学描述尚未有充分研究。文中提出了参与调频前运行于最大功率点跟踪模式下的异步变速风机参与一次调频时的全风况出力响应模型,基于小信号增量法获得了不同工况下出力响应的线性化描述,与风机非线性模型对比验证了所提线性化模型的有效性和准确性。此外,在单机线性化模型基础上,基于间隙度量计算将特性相似的风机进行聚类,建立了风电场出力响应等值模型。仿真结果表明,所提等值模型在降低风电场调频模型复杂度的前提下保证了风电场频率响应特性的逼近精度。
Abstract:
      The participation of wind turbines in primary frequency regulation has become the basic requirement for grid-connected wind turbines in many countries. However, the mathematical description of dynamic characteristics of frequency response of large-scale wind farms suitable for predictive control algorithms is not yet fully studied. For the asynchronous variable-speed wind turbine operating in the maximum power point tracking mode before participating in frequency regulation, this paper develops a full-mode model of the asynchronous wind turbine participating in the primary frequency regulation. Based on the small-signal increment method, the linearized description of the output response under different operation conditions is obtained. The effectiveness and accuracy of the linearized model are verified by the comparison with the non-linear model of wind turbine. In addition, based on the single-machine linearization model, the similar wind turbines are clustered based on the gap metric calculation, and the equivalent model of wind farm output response is established. The simulation results show that the proposed equivalent model guarantees the accuracy of the frequency response characteristics of wind farm under the premise of reducing the complexity of frequency regulation model.
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