SUN Dawei,LIU Hui,WU Linlin,et al.Modeling and Characteristic Analysis on Influence of Virtual Synchronous Generator on Low-frequency Oscillation[J].Automation of Electric Power Systems,2020,44(24):134-144.
SUN Dawei,LIU Hui,WU Linlin,et al.Modeling and Characteristic Analysis on Influence of Virtual Synchronous Generator on Low-frequency Oscillation[J].Automation of Electric Power Systems,2020,44(24):134-144. DOI: 10.7500/AEPS20200501002.
Modeling and Characteristic Analysis on Influence of Virtual Synchronous Generator on Low-frequency Oscillation
The virtual synchronous generator (VSG) control can simulate the operation characteristics of the synchronous generator (SG)
which helps the inverter power supply overcome the shortcomings of low inertia and low damping. However
the VSG control may cause the inverter power supply to participate in the low-frequency oscillation between machines or regions of a large power grid. Aiming at this problem
this paper develops a small-signal model of the VSG-SG interconnected system for the study of low-frequency oscillation characteristics of the power grid. Based on the model
the difference and connection between the VSG and SG influencing the low-frequency oscillation modes of the system are studied to reveal the mechanism of VSG affecting the low-frequency oscillation of power grid. The influence of various control parts in VSG on the low-frequency oscillation mode is also analyzed
which indicates the low-frequency oscillation risks of different types of VSGs. Finally
experiments on the RT-LAB platform are conducted to verify the results of the small-signal model analysis.
关键词
Keywords
references
DU W J , FU Q , WANG H F . Damping torque analysis of DC voltage stability of an MTDC network for the wind power delivery [J]. IEEE Transactions on Power Delivery , 2020 , 35 ( 1 ): 324 - 338 .
DU W J , FU Q , WANG H F . Subsynchronous oscillations caused by open-loop modal coupling between VSC-based HVDC line and power system [J]. IEEE Transactions on Power Systems , 2018 , 33 ( 4 ): 3664 - 3677 .
ZHONG Q C , HORNIK T . Control of power inverters in renewable energy and smart grid integration [M]. New York , USA: Wiley-IEEE Press , 2013 .
DU W J , FU Q , WANG H F . Open-loop modal coupling analysis for a multi-input multi-output interconnected MTDC/AC power system [J]. IEEE Transactions on Power Systems , 2019 , 34 ( 1 ): 246 - 256 .
ZHENG Tianwen , CHEN Laijun , CHEN Tianyi , et al . Review and prospect of virtual synchronous generator technologies [J]. Automation of Electric Power Systems , 2015 , 39 ( 21 ): 165 - 175 .
GE Jun , LIU Hui , JIANG Hao , et al . Analysis and discussion on adaptability of virtual synchronous generators in grid operation [J]. Automation of Electric Power Systems , 2018 , 42 ( 9 ): 26 - 35 .
SHI K , SONG W , GE H , et al . Transient analysis of microgrids with parallel synchronous generators and virtual synchronous generators [J]. IEEE Transactions on Energy Conversion , 2020 , 35 ( 1 ): 95 - 105 .
DU W J , FU Q , WANG H F . Power system small-signal angular stability affected by virtual synchronous generators [J]. IEEE Transactions on Power Systems , 2019 , 34 ( 4 ): 3209 - 3219 .
YAN Xiangwu , LIU Zhengnan , ZHANG Bo , et al . Small-signal stability analysis of parallel inverters with synchronous generator characteristics [J]. Power System Technology , 2016 , 40 ( 3 ): 910 - 917 .
LI Bin , ZHOU Lin , YU Xirui , et al . Improved power decoupling control strategy based on virtual synchronous generator [J]. IET Power Electronics , 2017 , 10 ( 4 ): 462 - 470 .
WU W H , CHEN Y D , ZHOU L M , et al . Sequence impedance modeling and stability comparative analysis of voltage-controlled VSGs and current-controlled VSGs [J]. IEEE Transactions on Industrial Electronics , 2019 , 66 ( 8 ): 6460 - 6472 .
DU Wei , JIANG Qirong , CHEN Jiaorui . Frequency control strategy of distributed generations based on virtual inertia in a microgrid [J]. Automation of Electric Power Systems , 2011 , 35 ( 23 ): 26 - 31 .
SONG Qiong , ZHANG Hui , SUN Kai , et al . Improved adaptive control of inertia for virtual synchronous generators in islanding micro-grid with multiple distributed generation units [J]. Proceedings of the CSEE , 2017 , 37 ( 2 ): 412 - 424 .
FU Qiang , DU Wenjuan , WANG Haifeng . Influence of multi virtual synchronous generators on power system electromechanical oscillation mode [J]. Proceedings of the CSEE , 2018 , 38 ( 19 ): 5615 - 5624 .
DU W J , FU Q , WANG H F . Concept of modal repulsion for examining the subsynchronous oscillations caused by wind farms in power systems [J]. IEEE Transactions on Power Systems , 2019 , 34 ( 1 ): 518 - 526 .
TOM L . Participation of inverter-connected distributed energy resources in gird voltage control [D]. Leuven , Belgium: Katholieke Universiteit , 2011 .
POGAKU N , PRPDANOVIC M , GREEEN T C . Modeling, analysis and testing of autonomous operation of an inverter-based microgrid [J]. IEEE Transactions on Power Electronics , 2007 , 22 ( 2 ): 613 - 624 .
SAKIMOTO K , MIURA Y , ISE T . Stabilization of a power system including inverter-type distributed generators by a virtual synchronous generator [J]. Electrical Engineering in Japan , 2014 , 187 ( 3 ): 7 - 17 .
WANG Shuo , HU Jiabing , YUAN Xiaoming . Virtual synchronous control for grid-connected DFIG-based wind turbines [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2015 , 3 ( 4 ): 932 - 944 .
MA J , QIU Y , LI Y , et al . Research on the impact of DFIG virtual inertia control on power system small-signal stability considering the phase-locked loop [J]. IEEE Transactions on Power Systems , 2017 , 32 ( 3 ): 2094 - 2105 .
SUN Dawei , LIU Hui , GAO Shun’an , et al . Small-signal modeling and stability analysis of current-controlled virtual synchronous generators [J]. Power System Technology , 2018 , 42 ( 9 ): 2983 - 2993 .
GRIGSBY L . Power system stability and control [M]. Abingdon , UK: Taylor & Francis , 2007 .
TU Chunming , XIE Weijie , XIAO Fan , et al . Influence analysis of control parameters of parallel system with multiple virtual synchronous generators on stability [J]. Automation of Electric Power Systems , 2020 , 44 ( 15 ): 77 - 86 .
ZHANG Baoqun , HU Changbin , MA Longfei , et al . Active power quality control for microgrid with virtual synchronous generator based on small-signal stability analysis [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 210 - 222 .
ZHANG Bo , ZHANG Xiaolei , JIA Jiaoxin , et al . Configuration method for energy storage unit of virtual synchronous generator based on requirements of inertia support and primary frequency regulation [J]. Automation of Electric Power Systems , 2019 , 43 ( 23 ): 202 - 216 .
SUN Dawei , LIU Hui , GAO Shun’an , et al . Comparison of different virtual inertia control methods for inverter-based generators [J]. Journal of Modern Power Systems and Clean Energy , 2020 , 8 ( 4 ): 768 - 777 .