基于滑模变结构的风电机组一次调频算法研究  

Primary Frequency Modulation Algorithm for Wind Turbine Based on Sliding Mode Variable Structure

作　　者：李继超[1] 贾梦欣 陈超波[1] 张彬彬[1] 王坤[1] 杨冰[2] LI Ji-chao;JIA Meng-xin;CHEN Chao-bo;ZHANG Bin-bin;WANG Kun;YANG Bing(School of Electronic and Information Engineering,Xi an Technological University,Xi an 710021,China;Xi an Institute of Applied Optics,Xi an 710065,China)

机构地区：[1]西安工业大学电子信息工程学院,西安710021 [2]西安应用光学研究所,西安710065

出　　处：《科学技术与工程》2024年第12期4998-5005,共8页Science Technology and Engineering

基　　金：国家重点研发计划(2022YFE0123400);西安市未央区科技计划项目(202205);陕西高校青年创新团队。

摘　　要：针对并网风电场中,经典一次调频控制方法存在抗干扰能力弱、机组易脱网的问题,提出一种基于滑模变结构的风电机组一次调频控制算法。首先,在永磁同步风电机组工作原理的基础上,建立含有大电网的风电机组模型。其次,为了解决传统比例积分微分(proportional integral differential,PID)控制下抗干扰能力弱的问题、引入经典滑模变结构控制器。然后,针对经典滑模变结构控制器导致执行机构存在抖振较多的缺点,提出一种基于sigmoid函数趋近率的滑模变结构一次调频控制算法。最后,通过MATLAB/Simulink对风电机组一次调频进行建模仿真,并与经典控制算法相比,验证了所提算法的可行性,在风速波动和电网故障的环境下,滑模变结构一次调频控制算法更具有效性。For grid-connected wind farms,the classical frequency modulation control method has the problems of weak anti-interference ability and easy off-grid unit.A frequency modulation control algorithm for wind turbines based on sliding mode variable structure was proposed.Firstly,based on the working principle of permanent magnet synchronous wind turbine,a wind turbine model containing large power grid was established.Secondly,in order to solve the problem of weak anti-interference ability under traditional proportional integral differential(PID)control,the classical sliding mode variable structure controller was introduced.Then,in view of the shortcoming of the classical sliding mode variable structure controller which leaded to more chattering,a sliding mode variable structure primary frequency modulation control algorithm based on sigmoid function reaching rate was proposed.Finally,MATLAB/Simulink was used to model and simulate the primary frequency modulation of wind turbines.Compared with the classical control algorithm,the feasibility of the proposed algorithm was verified.Under the circumstance of wind speed fluctuation and power grid failure,the sliding mode variable structure primary frequency modulation control algorithm is more effective.

关 键 词：风电机组 永磁同步发电机(PMSM) 一次调频 滑模变结构控制器 

分 类 号：TM73[电气工程—电力系统及自动化]