基于功角偏差反馈的构网型储能暂态功角稳定增强方法  

Improvement method for grid-forming energy storage power angle stabilization in transient state based on power angle deviation feedback

作　　者：孙压宁 任永峰 王欢 李超 郭筱 陈磊 SUN Yaning;REN Yongfeng;WANG Huan;LI Chao;GUO Xiao;CHEN Lei(School of Energy and Power Engineering Inner Mongolia University of Technology,Hohhot 010051,China;China Three Gorges New Energy(Group)Co.,Ltd.Construction Management Branch,Beijing 101100,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]中国三峡新能源(集团)股份有限公司建设管理分公司,北京101100

出　　处：《电力工程技术》2025年第2期90-99,共10页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(52367022)。

摘　　要：针对构网型储能接入以新能源为主体的新型电力系统中,由于新能源发电的不稳定导致电网电压跌落,进而引起构网型储能在暂态过程中出现功角失稳和过电流的问题,文中提出了基于功角偏差反馈的暂态功角稳定控制策略。首先,构网型储能采用虚拟同步发电机(virtual synchronous generator,VSG)控制,并基于VSG控制建立构网型储能模型。其次,通过VSG功角特性分析有功功率、功角稳定及输出电流之间的关系,并结合相图理论深入分析功角失稳的原因。在此基础上,以功角稳定范围和有功功率偏差为依据,设计了功角偏差反馈系数自适应调节策略。该策略通过功角偏差反馈来控制有功功率偏差,进而抑制功角增大,保持功角稳定,并有效抑制过电流。最后,通过时域仿真验证了理论分析的正确性及文中所提控制方法的有效性。For grid-forming energy storage integrated into power systems dominated by new energy,voltage drops in the grid are caused by the instability of new energy generation.Leading to transient power angle instability and overcurrent issues in grid-forming energy storage.A transient power angle stability control strategy based on power angle deviation feedback is proposed in the article.Firstly,grid-forming energy storage adopts virtual synchronous generator(VSG)control,and a corresponding model is established based on VSG control.Secondly,the relationship between active power,power angle stability,and output current is analyzed based on VSG power angle characteristics,and the causes of power angle instability are further analyzed using phase portrait theory.Based on this,an adaptive adjustment strategy for the power angle deviation feedback coefficient is designed,considering the power angle stability range and active power deviation.The active power deviation is controlled through power angle deviation feedback,thereby suppressing power angle amplification,maintaining power angle stability,and effectively mitigating overcurrent.Finally,time-domain simulations verify the correctness of the theoretical analysis and the effectiveness of the proposed control method.

关 键 词：构网型储能 虚拟同步发电机(VSG) 暂态功角稳定 功角偏差反馈 电压跌落 功角失稳 

分 类 号：TM46[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]