文章摘要
考虑风机一次调频的风电高占比电网机组组合
Unit commitment considering the primary frequency regulation of wind turbine in grids with a high proportion of wind power
投稿时间:2019-12-10  修订日期:2020-05-13
DOI:
中文关键词: 机组组合  一次调频  风力发电  调频约束
英文关键词: unit commitment  primary frequency modulation  wind power  frequency constraints
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
郭树锋 国网青海省电力公司 guoshufeng123@126.com 
李威 NARI Technology Co,Ltd  
胡珊珊 南京理工大学自动化学院 2499910536@qq.com 
谢东亮 NARI Technology Co,Ltd  
张节潭 State grid Qinghai Electric Power Company  
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中文摘要:
      随着风电的大规模、高渗透率接入电网,单纯常规机组一次调频已难以满足系统调频需求,迫切需要风电参与一次调频。在此背景下,本文在风机调频控制研究的基础上,提出了一种考虑风机参与系统一次调频的机组组合模型。该模型通过系统地加入稳态频率、频率最低点及频率变化率的约束条件,确保含风电电力系统预留足够的备用容量以支撑一次调频。本文采用大M法将非线性模型转化为混合整数线性规划模型,并调用CPLEX程序包求解。最后,在IEEE 39节点系统上验证了所提模型的有效性。仿真结果表明,本文提出的考虑风电参与一次调频的机组组合模型能提升系统承受负荷扰动的能力,从而满足更大负荷扰动下系统一次调频的备用需求。
英文摘要:
      With large-scale and high penetration level wind integration, it is difficult to meet the power grid''s need when only conventional units participate in primary frequency modulation, so the participation of wind power is urgently needed. In this context, based on the research of wind power frequency modulation control, a unit commitment model considering the wind turbines participating in primary frequency modulation is proposed. By systematically adding the constraints of steady-state frequency, minimum frequency and rate of change-of-frequency, the model ensures that enough spare capacity is reserved to support primary frequency modulation. In this paper, the big M method is used to transform the nonlinear model into a mixed integer linear programming model, and then the CPLEX package is called to solve the problem. Finally, the validity of the proposed model is verified on an IEEE 39-node system. The simulation results show that the proposed unit commitment model which considers wind power to participate in primary frequency modulation can improve the capacity of the system to withstand load disturbance, so as to meet the standby requirement of primary frequency modulation under larger load disturbance.
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