构网型风电并网系统的振荡能量转移与功率支撑技术  

Oscillation Energy Transfer and Power Support Technology for Grid-forming Wind Power Grid-connected System

作　　者：张祥宇[1] 黄泳漩 付媛[2] ZHANG Xiangyu;HUANG Yongxuan;FU Yuan(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Baoding 071003,Hebei Province,China;Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province(North China Electric Power University),Baoding 071003,Hebei Province,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),河北省保定市071003 [2]河北省分布式储能与微网重点实验室(华北电力大学),河北省保定市071003

出　　处：《中国电机工程学报》2024年第23期9251-9261,I0011,共12页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(52277100);河北省自然科学基金项目(E2023502038);中央高校基本科研业务费(2023MS101)。

摘　　要：提升构网型风电机组的振荡能量转移效率是解决振荡抑制与频率支撑参数设计矛盾的关键,对于构网型控制技术的工程推广应用具有重要作用。该文首先分析同步发电机与构网型双馈风电机组间的转子角弹性耦合关系,并构建含构网型风电的两自由度系统弹性运动模型。其次,基于哈密顿能量函数方法,分析构网型风电机组与同步机间的振荡能量转移机理,分析提升构网型风电机组振荡能量转移效率的必要条件,并提出基于振荡能量高效转移的构网型风电机组功率主动支撑控制策略。最后,搭建风电高比例的仿真系统,验证所提控制方法可显著提升双馈风电机组对系统功率振荡与频率波动的抑制效果。Improving the oscillation energy transfer efficiency of grid-forming wind turbines is the key to solving the parameter design contradiction between oscillation suppression and frequency support,which plays an important role in the engineering application of grid-forming control technology.First,this paper analyzes the rotor angle elastic coupling relationship between a synchronous generator and a grid-forming doubly-fed wind turbine,and constructs a two-degree-of-freedom system elastic motion model with grid-forming wind power.Then,based on the Hamiltonian energy function method,the transfer mechanism of oscillation energy between the grid-forming wind turbine and the synchronous generator is analyzed,and the necessary condition for improving the oscillation energy transfer efficiency of the grid-forming wind turbine is analyzed.The active support control strategy of the grid-forming wind turbine power based on the efficient transfer of oscillation energy is proposed.Finally,a simulation system with high proportion of wind power is constructed,indicating that the proposed control method can significantly improve the suppression effect of doubly-fed wind turbines on system power oscillation and frequency fluctuation.

关 键 词：构网型控制 双馈风电机组 同步发电机 振荡能量 功率振荡 

分 类 号：TM712[电气工程—电力系统及自动化]