考虑风速差异的风电场调频备用协调控制策略  

Coordinated Control of Frequency-Regulation Reserve Capacity for Wind Farm Considering Wind Speed Difference

作　　者：张蕊 李晓明 高泽明 孟令聪 秦超[3] 曾沅[3] 张文旭 ZHANG Rui;LI Xiaoming;GAO Zeming;MENG Lingcong;QIN Chao;ZENG Yuan;ZHANG Wenxu(Electric Power Research Institute,State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050021,China;State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050021,China;Key Laboratory of Smart Grid,Ministry of Education(Tianjin University),Tianjin 300072,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,石家庄市050021 [2]国网河北省电力有限公司,石家庄市050021 [3]智能电网教育部重点实验室(天津大学),天津市300072

出　　处：《电力建设》2023年第2期101-109,共9页Electric Power Construction

基　　金：国家电网公司总部科技项目“基于数据驱动的复杂大电网有功频率控制策略研究”(5100-202113024A-0-0-00)。

摘　　要：由于风资源分布的差异性,风电场内不同机组的减载备用能力不同。在预留减载备用时,风电场应考虑不同机组的减载备用能力差异。针对该问题,构建了双馈风机的可用调频容量模型,在此基础上,提出了考虑风速差异的风电场调频备用协调控制策略。该策略根据不同风速机组的可用调频容量差异协调风电场的调频资源,在满足备用容量的同时充分利用转子动能,通常仅需控制部分风机,简化系统复杂性。在DIgSILENT/PowerFactory中搭建了系统仿真模型,仿真结果表明所提策略使风电场内不同风速的机组协调配合,改善系统的频率调节能力,缓解同步机调频压力。Due to the difference of wind resource distribution, different units in the wind farm have different de-loading reserve capacity. When reserving de-loading reserve, the wind farm should consider the difference of de-loading reserve capacity of different units. In order to solve this problem, the available frequency-regulation capacity model of doubly-fed induction generator is constructed in this paper. According to this model, a coordinated control of frequency-regulation reserve capacity for wind farm considering wind speed difference is proposed. In this strategy, the frequency-regulation resources of wind farms are coordinated according to the differences of available frequency-regulation capacity of different wind turbines, and the kinetic energy of the rotor is fully utilized while the reserve capacity is satisfied. Usually, only part of the wind turbines are controlled, which simplifies the complexity of the control system. The system simulation model is built in DIgSILENT/PowerFactory. The simulation results show that the proposed strategy can coordinate the units with different wind speeds in the wind farm, improve the frequency-regulation capability of the system and alleviate the frequency-regulation pressure of the synchronous machine when load disturbance occurs.

关 键 词：双馈感应发电机 风电场 可用调频容量 协调控制 功率分配 

分 类 号：TM614[电气工程—电力系统及自动化]