QUANTITATIVE COMPARATIVE ANALYSIS OF WIDEBAND DYNAMIC CHARACTERISTICS OF VSG-CONTROLLED GRID-FOLLOWING/GRID-FORMING CONVERTERS

Han Lu; Li Shaolin; Qin Shiyao; Yuan Chang; Li Pengkun

doi:10.19912/j.0254-0096.tynxb.2024-1761

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (11) : 542-552. DOI: 10.19912/j.0254-0096.tynxb.2024-1761

QUANTITATIVE COMPARATIVE ANALYSIS OF WIDEBAND DYNAMIC CHARACTERISTICS OF VSG-CONTROLLED GRID-FOLLOWING/GRID-FORMING CONVERTERS

Han Lu^1,2, Li Shaolin¹, Qin Shiyao¹, Yuan Chang², Li Pengkun¹

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Abstract

Aiming at the problem of insufficient quantitative comparative study on the wideband dynamic characteristics of the grid-following/grid-forming converters, this study initially constructs a small-signal model to represent the wideband dynamics of grid-following/grid-forming converters under virtual synchronous control, followed by comprehensive validation in both time and frequency domains. Building upon this foundation, the research employs eigenmode and participation factor analysis to quantitatively assess and compare the wideband dynamic characteristics and stability of the converters, identifying weakly damped eigenmodes and pinpointing critical control parameters. Moreover, utilizing the root locus method, the study quantitatively examines how active support parameters—such as virtual inertia and primary frequency modulation—along with grid strength, influence the dynamic characteristics of the converters and delineates their patterns of variation. Conclusively, the accuracy and validity of the findings are substantiated through the development of a detailed time-domain simulation model of the grid-following and grid-forming converters in Matlab/Simulink.

Key words

virtual synchronous generator / grid-following control / grid-forming control / wideband dynamic characteristics / quantitative analysis

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Han Lu, Li Shaolin, Qin Shiyao, Yuan Chang, Li Pengkun. QUANTITATIVE COMPARATIVE ANALYSIS OF WIDEBAND DYNAMIC CHARACTERISTICS OF VSG-CONTROLLED GRID-FOLLOWING/GRID-FORMING CONVERTERS[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 542-552 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1761

References

[1] 谢小荣, 贺静波, 毛航银, 等. “双高” 电力系统稳定性的新问题及分类探讨[J]. 中国电机工程学报, 2021, 41(2): 461-474.
XIE X R, HE J B, MAO H Y, et al.New issues and classification of power system stability with high shares of renewables and power electronics[J]. Proceedings of the CSEE, 2021, 41(2): 461-474.
[2] QUAN X J, YU R Y, ZHAO X, et al.Photovoltaic synchronous generator: architecture and control strategy for a grid-forming PV energy system[J]. IEEE journal of emerging and selected topics in power electronics, 2020, 8(2): 936-948.
[3] 李少林, 王伟胜, 张兴, 等. 基于频率响应区间划分的风电机组虚拟惯量模糊自适应控制[J]. 电网技术, 2021, 45(5): 1658-1665.
LI S L, WANG W S, ZHANG X, et al.Fuzzy adaptive virtual inertia control strategy of wind turbines based on system frequency response interval division[J]. Power system technology, 2021, 45(5): 1658-1665.
[4] LASSETER R H, CHEN Z, PATTABIRAMAN D.Grid-forming inverters: a critical asset for the power grid[J]. IEEE journal of emerging and selected topics in power electronics, 2020, 8(2): 925-935.
[5] 秦世耀, 齐琛, 李少林, 等. 电压源型构网风电机组研究现状及展望[J]. 中国电机工程学报, 2023, 43(4): 1314-1334.
QIN S Y, QI C, LI S L, et al.Review of the voltage-source grid forming wind turbine[J]. Proceedings of the CSEE, 2023, 43(4): 1314-1334.
[6] BECK H P, HESSE R.Virtual synchronous machine[C]//2007 9th International Conference on Electrical Power Quality and Utilisation. Barcelona, Spain, 2008: 1-6.
[7] DRIESEN J, VISSCHER K.Virtual synchronous generators[C]//2008 IEEE Power and Energy Society General Meeting-Conversion and Delivery of Electrical Energy in the 21st Century. Pittsburgh, PA, USA, 2008: 1-3.
[8] 张学广, 付志超, 陈文佳, 等. 弱电网下考虑锁相环影响的并网逆变器改进控制方法[J]. 电力系统自动化, 2018, 42(7): 139-145.
ZHANG X G, FU Z C, CHEN W J, et al.An improved control method for grid-connected inverters considering impact of phase-locked loop under weak grid condition[J]. Automation of electric power systems, 2018, 42(7): 139-145.
[9] 葛豪宇, 杨明, 方聪, 等. 弱电网下计及并网逆变器耦合效应的新型锁相环设计方法及其稳定性分析[J]. 电网技术, 2024, 48(12):5108-5117.
GE H Y, YANG M, FANG C, et al.A new phase-locked loop design method and stability analysis considering the coupling effect of grid-connected inverter under weak grid[J]. Power system technology, 2024, 48(12): 5108-5117.
[10] 张进, 李少林, 王伟胜, 等. 双馈风电机组虚拟惯量控制量化分析与参数优化整定[J]. 电网技术, 2023, 47(4): 1369-1379.
ZHANG J, LI S L, WANG W S, et al.Quantitative analysis and parameter optimization of virtual inertia control for doubly fed wind turbine[J]. Power system technology, 2023, 47(4): 1369-1379.
[11] 杨欢红, 焦伟, 黄文焘, 等. 考虑暂态功角稳定和故障限流的并网逆变器下垂暂态控制策略[J]. 电力系统保护与控制, 2023, 51(23): 59-70.
YANG H H, JIAO W, HUANG W T, et al.Droop transient control strategy considering transient power angle stability and fault current limitation of a grid-connected inverter[J]. Power system protection and control, 2023, 51(23): 59-70.
[12] 何鑫, 左芸裴, 杨映海, 等. 基于虚拟同步机参数自适应调节的并网逆变器控制策略研究[J]. 太阳能学报, 2024, 45(7): 259-266.
HE X, ZUO Y P, YANG Y H, et al.Research on control strategy of grid-connected inverter based on parameter adaptive adjustment of virtual synchronous generator[J]. Acta energiae solaris sinica, 2024, 45(7): 259-266.
[13] ARGHIR C, JOUINI T, DÖRFLER F. Grid-forming control for power converters based on matching of synchronous machines[J]. Automatica, 2018, 95: 273-282.
[14] 姜汉周, 潘欢, 纳春宁. 混合负载下基于虚拟振荡器控制的离网逆变器控制策略研究[J]. 电力系统保护与控制, 2023, 51(9): 88-96.
JIANG H Z, PAN H, NA C N.Island inverter control strategy based on improved virtual oscillator control under mixed load[J]. Power system protection and control, 2023, 51(9): 88-96.
[15] 朱作滨, 孙树敏, 丁月明, 等. 基于自适应VSG控制策略永磁直驱风电系统研究[J]. 太阳能学报, 2024, 45(1): 116-124.
ZHU Z B, SUN S M, DING Y M, et al.Research on PMSG wind power system based on adaptive VSG control strategy[J]. Acta energiae solaris sinica, 2024, 45(1): 116-124.
[16] 张继红, 宋广宇, 熊伟, 等. 基于虚拟复阻抗的增强型鲁棒电压下垂控制方法及环流抑制策略[J]. 太阳能学报, 2021, 42(12): 401-409.
ZHANG J H, SONG G Y, XIONG W, et al.Enhanced robust voltage droop control method and circulating current suppression strategy based on virtual complex impedance[J]. Acta energiae solaris sinica, 2021, 42(12): 401-409.
[17] 李志军, 贾学岩, 王丽娟, 等. 基于改进惯量阻尼特性的VSG控制策略[J]. 太阳能学报, 2021, 42(7): 78-85.
LI Z J, JIA X Y, WANG L J, et al.Improved virtual synchronous generator based on enhanced inertia and damping characteristics[J]. Acta energiae solaris sinica, 2021, 42(7): 78-85.
[18] 伍文华, 陈燕东, 周乐明, 等. 虚拟同步发电机接入弱电网的序阻抗建模与稳定性分析[J]. 中国电机工程学报, 2019, 39(6): 1560-1571, 1853.
WU W H, CHEN Y D, ZHOU L M, et al.Sequence impedance modeling and stability analysis for virtual synchronous generator connected to the weak grid[J]. Proceedings of the CSEE, 2019, 39(6): 1560-1571, 1853.
[19] 谢震, 许可宝, 秦世耀, 等. 基于电压源型和电流源型双馈风电机组稳定性对比分析[J]. 电网技术, 2021, 45(5): 1724-1735.
XIE Z, XU K B, QIN S Y, et al.Comparative analysis of doubly-fed wind turbine stability based on voltage source and current source[J]. Power system technology, 2021, 45(5): 1724-1735.
[20] 王晓东, 李凯凯, 卢奭瑄, 等. 基于VSG的风电机组虚拟惯量控制策略[J]. 太阳能学报, 2018, 39(5): 1418-1425.
WANG X D, LI K K, LU S X, et al.Virtual synchronous generator based virtual inertia control strategy of wind turbine[J]. Acta energiae solaris sinica, 2018, 39(5): 1418-1425.
[21] 刘淇玉, 李永刚, 王月, 等. 构网型并网逆变器状态空间建模及稳定性分析[J]. 华北电力大学学报(自然科学版), 2024, 51(1): 83-93.
LIU Q Y, LI Y G, WANG Y, et al.State space modeling and stability analysis of grid-forming inverter[J]. Journal of North China Electric Power University (natural science edition), 2024, 51(1): 83-93.
[22] MIDDLEBROOK R D.Small-signal modeling of pulse-width modulated switched-mode power converters[J]. Proceedings of the IEEE, 1988, 76: 343-354.