基于Lyapunov能量函数的单电压环幅值控制构网型储能虚拟阻抗参数整定方法  

A Lyapunov energy function-based virtual impedance parameter tuning method for grid-forming energy storage under single loop voltage magnitude control

作　　者：熊亮雳 游力 韩刚 熊昊哲 田梦如 徐晨 XIONG Liangli;YOU Li;HAN Gang;XIONG Haozhe;TIAN Mengru;XU Chen(State Grid Hubei Electric Power Co.,Ltd.Electric Power Research Institute,Wuhan 430077,China;School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200444,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]上海大学机电工程与自动化学院,上海200444

出　　处：《电力系统保护与控制》2025年第6期30-41,共12页Power System Protection and Control

基　　金：国家电网有限公司总部科技项目资助(5108-202218280A-2-311-XG)。

摘　　要：集中式构网型储能电站是高比例新能源电力系统中的重要装备,能够主动为系统提供电压、惯量支撑以及阻尼。常用的构网型控制方案包括电压电流双环与单电压环幅值控制,后者具备更强的暂态电压支撑能力,但面临着更为严峻的暂态过电流风险。在单电压环幅值控制的基础上,叠加虚拟阻抗控制抑制暂态过流,同时将有功环节的相角与无功环节的电压动态过程综合考虑,构建了系统的Lyapunov能量函数,分析系统的暂态稳定性,进行虚拟阻抗参数整定。与传统的仅考虑有功环节相角动态过程的相平面法相比,采用Lyapunov能量函数得到的参数范围更加准确。仿真结果验证了添加虚拟阻抗控制后,构网型储能电站能够应对上级电网电压暂降及相位跳变,并将暂态电流限制在合理范围内。同时,验证了Lyapunov能量函数法进行虚拟阻抗参数整定的有效性。Centralized grid-forming energy storage stations are critical pieces of equipment in high-proportion of new energy power systems.They can actively provide voltage support,inertia support,and damping.Common grid-forming control schemes include voltage and current dual-loop control and single-loop voltage magnitude control.The latter has stronger transient voltage support ability,but faces more severe transient overcurrent risks.To mitigate transient overcurrent,virtual impedance control is introduced on top of single voltage-loop amplitude control.Additionally,the dynamic processes of the active power/phase angle and reactive power/voltage are comprehensively considered to construct the system’s Lyapunov energy function.This function is used to analyze transient stability and determine virtual impedance parameters.Compared to the traditional phase plane method,which only considers the active power/phase angle dynamics,the Lyapunov energy function provides a more accurate parameter range.Simulation results verify that,with the virtual impedance control,the grid-forming energy storage power station can effectively respond to voltage dips and phase jumps while keeping the transient current within a reasonable range.Also,the effectiveness of the Lyapunov energy function method for virtual impedance parameter tuning is confirmed.

关 键 词：构网型储能电站 单电压环幅值控制 虚拟阻抗 Lyapunov能量函数 

分 类 号：TM7[电气工程—电力系统及自动化]