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

作　　者：郭树锋 李威[2] 胡珊珊 谢东亮[2] 张节潭 GUO Shufeng;LI Wei;HU Shanshan;XIE Dongliang;ZHANG Jietan(State Gnd Qinghai Electric Power Company,Ximing 810008,China;NARI Technology Co.,Ltd.,Nanjing 211106,China;School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]国网青海省电力公司,青海西宁810008 [2]国电南瑞科技股份有限公司,江苏南京211106 [3]南京理工大学自动化学院,江苏南京210094

出　　处：《电力工程技术》2020年第4期61-67,共7页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(61773214,51977111);国家电网有限公司科技项目“大型新能源基地送端电网调频特性分析及优化控制技术研究”(52280016-00DT)。

摘　　要：随着风电大规模、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。文中在风机调频控制研究的基础上,提出一种考虑风机参与系统一次调频的机组组合模型。该模型通过加入稳态频率、频率最低点和频率变化率为约束条件,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。文中采用大M法将非线性模型转化为混合整数线性规划模型,并调用Matlab中CPLEX程序包求解。最后,在IEEE 39节点系统上验证了该模型的有效性。仿真结果表明,该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。With large-scale and high penetration level wind integration,it is difficult to meet power grid need when only conventional units participate in primary frequency modulation,so the participation of wind power is urgently needed. 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. The big M method is used to transform the nonlinear model into a mixed integer linear programming model,and then the CPLEX package of Matlab is used to solve the problem. Finally,the validity of the proposed model is verified on IEEE 39-bus system. The simulation results show that the proposed model 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.

关 键 词：机组组合 一次调频 风力发电 调频约束 负荷扰动 

分 类 号：TM734[电气工程—电力系统及自动化]