摘要
高比例风力发电使用大量的电力电子装置接入电网,本身不能像传统的同步发电机一样具备内在的惯性响应特性,在受到外界扰动时很难支撑风电系统自身频率的稳定性。常规的虚拟同步机(VSG)控制在惯量主动支撑方面很难满足实际运行需求,因此提出一种灵活自适应旋转惯量、阻尼综合VSG永磁直驱风电系统控制策略。首先,建立虚拟同步机永磁直驱风电系统机侧、网侧控制单元模型以及网侧和机侧之间的电流前馈控制单元。对风电VSG系统进行稳定性分析及参数整定。其次,设计自适应旋转惯量、阻尼综合控制规律,并对控制规律相关参数进行分析。最后,基于自适应灵活旋转惯量、阻尼综合控制规律建立风电系统仿真模型。通过仿真验证了该方法的可行性,仿真结果表明:该方法应用于风电系统相比于VSG/自适应旋转惯量VSG具有更好的调频特性以及具备直流母线抗扰动调压的特性。
The vast majority of wind power generation relies on a multitude of power electronic devices to connect to the power grid,which cannot possess the inherent inertia response characteristics of conventional synchronous generator.Additionally,a wind power system maintain frequency stability under outside disturbances is a challenge.Conventional virtual synchronous generator(VSG)control often fails to meet the specific operational needs for inertia active support.Hence,this paper provides a flexible adaptive rotational inertia and damping control technique for a VSG permanent magnet direct drive wind power system.First,the foundational structure of the current feed-forward control unit linking the grid and generator sides,the generator side converter control unit,and the grid side converter control unit is respectively established.An examination of the stability and parameter settings for wind power VSG system are done.Second,the adaptive control law of rotational inertia and damping is designed,and the relevant parameters are set.Last but not least,a simulation model for wind power VSG system is created using an adaptive flexible control rule for rotational inertia and damping.Simulation results verify the effectiveness of this approach.The simulation results suggest that this method has better frequency regulation features and anti-disturbance regulation characteristics of DC bus voltage compared to VSG/adaptive rotational inertia VSG wind power system.
作者
朱作滨
孙树敏
丁月明
黄绍平
Zhu Zuobin;Sun Shumin;Ding Yueming;Huang Shaoping(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China;Electric Power Research Institute of State Grid Shandong Electric Power Company,Ji’nan 250000,China;State Grid Shandong Electric Power Company Rizhao Power Supply Company,Rizhao 276800,China;School of Electrical and Information Engineering,Hunan Institute of Engineering,Xiangtan 411100,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2024年第1期116-124,共9页
Acta Energiae Solaris Sinica
基金
国网总部科技项目(5400-202216167A-1-1-ZN,4000-202216059A-1-1-ZN)。
作者简介
通信作者:朱作滨(1988-),男,博士研究生,主要从事电力电子与分布式并网技术方面的研究。913672953@qq.com。
