基于测速反馈的VSG惯量和阻尼自适应控制策略  

Speed Feedback Based Adaptive Control Strategy for VSG Inertia and Damping

作　　者：王素娥[1] 狄嘉 郝鹏飞[1] 巩磊 WANG Su’e;DI Jia;HAO Pengfei;GONG Lei(School of Electrical and Control Engineering,Shanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学电气与控制工程学院,陕西西安710021

出　　处：《智慧电力》2025年第3期53-61,共9页Smart Power

基　　金：国家自然科学基金资助项目(52407059);陕西省重点研发计划(2024GX-YBXM-468)。

摘　　要：虚拟同步发电机(VSG)中虚拟转动惯量J和阻尼系数D灵活可调,当系统受到扰动时,J和D取值不当会导致有功功率振荡等问题。为此,提出一种改进VSG参数自适应控制策略。首先,引入测速反馈控制,等效增大系统阻尼,增强扰动过程中系统稳定性;为避免高频噪声影响,将纯微分环节用经典微分器代替。其次,基于扰动过程功角特性曲线,设计一种双曲正切函数(tanh)自适应控制策略,并给出参数取值范围。最后,将所提控制策略运用在不同工况下,通过仿真与RT-LAB半实物平台验证了所提策略可有效抑制系统功率振荡,同时J和D取值明显减小。In virtual synchronous generators (VSG),the virtual moment of inertia (J) and damping coefficient (D) are flexibly adjustable.However,the inappropriate values of J and D can lead to issues such as active power oscillations when the system is disturbed.Therefore,the paper proposes an improved adaptive control strategy for VSG parameters.Firstly,speed feedback control is introduced to equivalently increase the system damping,thereby enhancing the system stability during disturbances.To avoid the impact of high-frequency noise,the pure differential link is replaced with a classical differentiator.Secondly,based on the power angle characteristic curve during the disturbance process,a hyperbolic tangent function (tanh) based adaptive control strategy is designed,and the parameter value range is provided.Finally,the proposed control strategy is applied under different operating conditions,and simulations along with the RT-LAB hardware-in-the-loop platform verify that the proposed strategy can effectively suppress system power oscillations,while the values of J and D are significantly reduced.

关 键 词：VSG 虚拟惯量和阻尼 功率扰动 电网强度 稳态优化 

分 类 号：TM464[电气工程—电器]