异步风电机组轴系模型稳定性及参数稳定域分析  

Analysis of Stability and Parameter Stabilizing Region of Shaft Model of Asynchronous Wind Turbine

作　　者：刘昊天 卢占会[1] LIU Haotian;LU Zhanhui(School of Mathematics and Physics,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学数理学院,北京102206

出　　处：《华北电力大学学报（自然科学版）》2024年第5期93-99,共7页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(U1866204).

摘　　要：风力发电是近年来我国电力系统发展的热门领域,风电系统的稳定性的研究成为重要的课题。异步风电机组轴系模型由风力机、轴系、异步发电机等部件组成,准确分析和研究模型运行的稳定性显得尤为重要。在已有的异步风电机组五质量块轴系模型的基础上,将模型进行约化,并考虑到模型中某些运行参数在实际系统中可能是在一定范围内变化的不确定值,利用动力系统稳定性的相关理论,借助Gersgorin圆盘定理等工具,讨论当模型处于稳态时,找出不改变模型稳定性的参数稳定域的一种方法,该方法为研究含异步风电机组的电力系统的失稳问题提供了参考。最后通过算例验证了结论的有效性。Wind power generation is a hot field in the development of electric power system in recent years,and the study on stability of wind power system has become an important subject.The shaft model of asynchronous wind turbine is composed of wind turbine,shaft,asynchronous generator and other components.It is particularly important to analyze and study the stability of the model operation.Based on the existing five-mass shaft model of asynchronous wind turbine,we reduced the model.Considering that some parameters in the model may be uncertain values varying within some ranges in the actual system,we used the related theories of dynamical system stability and the Gersgorin disk theorem.This paper discussed a method to find the parameter stabilizing region that did not change the stability of the model when the model was in steady state.This method provides a reference for studying the instability problem of power system with asynchronous wind turbine.Finally,the method was verified by the numerical simulation,and the result shows that it is practical and effective.

关 键 词：异步风电机组 稳定性 五质量块模型 Gersgorin圆盘定理 参数稳定域 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] O193[理学—数学]