JIANG Xin,YI Hao,ZHUO Fang,et al.Low-frequency Oscillation Analysis and Damping Control for Grid-forming Converters Based on DC Voltage Synchronization[J].Automation of Electric Power Systems,2024,48(16):30-39.
JIANG Xin,YI Hao,ZHUO Fang,et al.Low-frequency Oscillation Analysis and Damping Control for Grid-forming Converters Based on DC Voltage Synchronization[J].Automation of Electric Power Systems,2024,48(16):30-39. DOI: 10.7500/AEPS20230826001.
Low-frequency Oscillation Analysis and Damping Control for Grid-forming Converters Based on DC Voltage Synchronization
The grid-forming converters based on DC voltage synchronization cannot only stabilize DC voltage but also realize the self-synchronization of converters. However
the interaction between DC voltage dynamics and control loops may cause low-frequency oscillation of the system. To study the mechanism of low-frequency oscillation
the “active power-power angle” model for stability analysis is built with consideration of the DC voltage synchronization control loop and AC voltage loop. It is found that DC voltage synchronization introduces more phase lag compared with active power synchronization
while the AC voltage loop also introduces phase lag in the loop. As a result
the system loop gain has the -180° phase crossing in the low frequency range with a high magnitude
thereby triggering the low-frequency oscillation issues. Based on the analysis of the low-frequency oscillation mechanism
two phase compensation methods for DC voltage synchronization control are proposed. Through reshaping the system loop phase in the high-gain-amplitude area of the low-frequency range
the damping control and oscillation suppression in the low-frequency range can be realized. Finally
the simulation and the experiment verify the correctness of the theoretical analysis and the effectiveness of the proposed methods.
HU Bo , XIE Kaigui , SHAO Changzheng , et al . Commentary on risk of new power system under goals of carbon emission peak and carbon neutrality: characteristics, indices and assessment methods [J]. Automation of Electric Power Systems , 2023 , 47 ( 5 ): 1 - 15 .
TENG Xianliang , TAN Chao , CHANG Li , et al . Review and prospect of research on active power and frequency control in power system with high proportion of renewable energy [J]. Automation of Electric Power Systems , 2023 , 47 ( 15 ): 12 - 35 .
SUN Huadong , WANG Baocai , LI Wenfeng , et al . Research on inertia system of frequency response for power system with high penetration electronics [J]. Proceedings of the CSEE , 2020 , 40 ( 16 ): 5179 - 5192 .
LI Yuguo , YI Hao , JIANG Xin , et al . Mechanism researching on low-frequency resonance of renewable-energy grid-following inverters under very weak grid and the stability-improving strategy based on dynamic reactive power over compensation [J]. Proceedings of the CSEE , 2023 , 43 ( 2 ): 482 - 496 .
XU Jieyi , LIU Wei , LIU Shu , et al . Current state and development trends of power system converter grid-forming control technology [J]. Power System Technology , 2022 , 46 ( 9 ): 3586 - 3595 .
ZHAN Changjiang , WU Heng , WANG Xiongfei , et al . An overview of stability studies of grid-forming voltage source converters [J]. Proceedings of the CSEE , 2023 , 43 ( 6 ): 2339 - 2359 .
LIU Xin , GUO Zhibo , JIA Jiaoxin , et al . Stability analysis and virtual impedance design of virtual synchronous machine based on sequence impedance [J]. Transactions of China Electrotechnical Society , 2023 , 38 ( 15 ): 4130 - 4146 .
YU Yanxue , GUAN Wanlin , CHEN Xiaoguang , et al . Synchronous frequency resonance in virtual synchronous generator based on sequence-impedance [J]. Transactions of China Electrotechnical Society , 2022 , 37 ( 10 ): 2584 - 2595 .
WANG Guangyu , FU Lijun , HU Qi , et al . Analysis and control of low-frequency oscillation damping of virtual synchronous generator considering influence of voltage loop [J]. Automation of Electric Power Systems , 2022 , 46 ( 14 ): 177 - 184 .
MA Yilin , YANG Huan , QU Zisen , et al . Design method for improving damping characteristics of virtual synchronous generator [J]. Power System Technology , 2021 , 45 ( 1 ): 269 - 275 .
XUE Yicheng , ZHANG Zheren , XU Zheng , et al . Impact analysis and damping control of grid-forming converter for low-frequency oscillation of AC system [J]. Automation of Electric Power Systems , 2023 , 47 ( 16 ): 103 - 113 .
HUANG L B , XIN H H , WANG Z , et al . A virtual synchronous control for voltage-source converters utilizing dynamics of DC-link capacitor to realize self-synchronization [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2017 , 5 ( 4 ): 1565 - 1577 .
CAO Y J , WANG W Y , LI Y , et al . A virtual synchronous generator control strategy for VSC-MTDC systems [J]. IEEE Transactions on Energy Conversion , 2018 , 33 ( 2 ): 750 - 761 .
FANG J Y , LI H C , TANG Y , et al . Distributed power system virtual inertia implemented by grid-connected power converters [J]. IEEE Transactions on Power Electronics , 2018 , 33 ( 10 ): 8488 - 8499 .
ALI KHAJEHODDIN S , KARIMI-GHARTEMANI M , EBRAHIMI M . Grid-supporting inverters with improved dynamics [J]. IEEE Transactions on Industrial Electronics , 2019 , 66 ( 5 ): 3655 - 3667 .
WANG Z X , YI H , ZHUO F , et al . Active power control of voltage-controlled photovoltaic inverter in supporting islanded microgrid without other energy sources [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2022 , 10 ( 1 ): 424 - 435 .
WANG Z X , YI H , JIANG Y J , et al . Voltage control and power-shortage mode switch of PV inverter in the islanded microgrid without other energy sources [J]. IEEE Transactions on Energy Conversion , 2022 , 37 ( 4 ): 2826 - 2836 .
LIU Y H , WANG Y E , WANG M H , et al . Coordinated VSG control of photovoltaic/battery system for maximum power output and grid supporting [J]. IEEE Journal on Emerging and Selected Topics in Circuits and Systems , 2022 , 12 ( 1 ): 301 - 309 .
YUAN Xiaotian , DU Zhengchun , LI Yujun , et al . Two-stage control of dc voltage synchronized direct driven wind turbine for active damping support [J/OL]. Power System Technology : 1 - 12 [ 2023-07-30 ]. https://doi.org/10.13335/j.1000-3673.pst.2022.2448 https://doi.org/10.13335/j.1000-3673.pst.2022.2448 .
HARNEFORS L . Modeling of three-phase dynamic systems using complex transfer functions and transfer matrices [J]. IEEE Transactions on Industrial Electronics , 2007 , 54 ( 4 ): 2239 - 2248 .
LI X Q , LIN P F , TANG Y , et al . Stability design of single-loop voltage control with enhanced dynamic for voltage-source converters with a low LC-resonant-frequency [J]. IEEE Transactions on Power Electronics , 2018 , 33 ( 11 ): 9937 - 9951 .
WU H , WANG X F . Passivity-based dual-loop vector voltage and current control for grid-forming VSCs [J]. IEEE Transactions on Power Electronics , 2021 , 36 ( 8 ): 8647 - 8652 .
Analysis on Interaction Between Power Synchronization Loop and Terminal Voltage Loop in Grid-connected System of Grid-forming Converter
Analysis on Key Influence Factors of Ratio of Grid-forming and Grid-following Converters in Hybrid Parallel Grid-connected System
Stability Mechanism Analysis of Power Synchronization Control for Grid-forming Converters
Analysis and Control of Low-frequency Oscillation Damping of Virtual Synchronous Generator Considering Influence of Voltage Loop
Related Author
YAO Xing
ZHAN Meng
LIU Qi
ZHANG Bin
ZHANG Xueguang
XU Dianguo
FANG Zheng
HUANG Yunhui
Related Institution
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Hubei Electric Power Security and High Efficiency Key Laboratory (Huazhong University of Science and Technology)
School of Electrical Engineering and Automation, Harbin Institute of Technology
State Key Laboratory of Maritime Technology and Safety (Wuhan University of Technology)
School of Automation, Wuhan University of Technology
National Key Laboratory of Science and Technology on Vessel Integrated Power System (Navy University of Engineering)