XIA Haitao,ZHOU Xiaoping,LIU Yifeng,et al.Stability Analysis and Improvement Method for AC/DC System with Series Compensation and STATCOMs[J].Automation of Electric Power Systems,2022,46(22):151-162.
XIA Haitao,ZHOU Xiaoping,LIU Yifeng,et al.Stability Analysis and Improvement Method for AC/DC System with Series Compensation and STATCOMs[J].Automation of Electric Power Systems,2022,46(22):151-162. DOI: 10.7500/AEPS20211207003.
Stability Analysis and Improvement Method for AC/DC System with Series Compensation and STATCOMs
The small-signal instability problem of the receiving end of the AC/DC system caused by series compensation (SC) and multiple static synchronous compensators (STATCOMs) is studied. Based on the change law of the dominant pole trajectories of the system closed-loop transfer function
the impacts of SC capacitor
STATCOM and its parallel number on the small-signal stability of the high voltage direct current (HVDC) transmission system are analyzed. The theoretical results reveal that: the application of SC is beneficial to the system stability at low and high frequencies
but it adds a pair of mid-frequency poles to the system
and the mid-frequency poles reduce the overall stability margin of the system; the application of STATCOM strengthens the system damping at the mid-frequency
but the system stability at the high frequency becomes worse with more STATCOMs in parallel. Aiming at the phenomenon
the corresponding mechanism explanations are given from the perspectives of the characteristics of constant extinction angle control and frequency-domain impedance (admittance). In order to improve the mid- and high-frequency stability of the system
the firing angle order feedback control and the active current compensation control are proposed. Then
the validity of the theoretical analysis results and the effectiveness of the proposed methods are verified by the PSCAD/EMTDC simulation software. Finally
the stability difference of the system is compared when the inverter adopts the constant extinction angle control and the constant voltage control.
LIU Zhenya , ZHANG Qiping , DONG Cun , et al . Efficient and security transmission of wind, photovoltaic and thermal power of large-scale energy resource bases through UHVDC projects [J]. Proceedings of the CSEE , 2014 , 34 ( 16 ): 2513 - 2522 .
YAO Wenfeng , ZHANG Yong , HONG Chao , et al . Operation characteristics and improved measures of DC system terminated at weak AC system [J]. Southern Power System Technology , 2015 , 9 ( 4 ): 54 - 59 .
ZHOU Hongyu , LI Peiping , YAO Wei , et al . Active power control strategy of electrochemical energy storage for mitigating subsequent DC commutation failures [J]. Automation of Electric Power Systems , 2021 , 45 ( 19 ): 70 - 79 .
MEI Yong , ZHAO Xiaobin , XIE Huifan , et al . Analysis and control measures of harmonic oscillation in power system integrated with DC through series compensation [J]. Automation of Electric Power Systems , 2019 , 43 ( 9 ): 187 - 191 .
ZHAO Xiaobin , XIE Xiaorong , LI Yan , et al . Mechanism and counter-measure of sub-/ super-synchronous ferromagnetic resonance between HVDC and AC system with series compensation [J]. Electric Power Automation Equipment , 2021 , 41 ( 7 ): 160 - 166 .
XING Chao , XI Xinze , LI Shengnan , et al . Effect of large capacity STATCOM on operation and fault characteristics of receiving DC converter station [J]. Power System Protection and Control , 2019 , 47 ( 15 ): 78 - 85 .
HU Peng , AI Xin , XIAO Shiwu , et al . Sequence impedance of static var generator and analysis of influencing factors on subsynchronous oscillation [J]. Transactions of China Electrotechnical Society , 2020 , 35 ( 17 ): 3703 - 3713 .
GUO Chunyi , JIANG Wen , ZHAO Chengyong , et al . Dynamic model and small-signal analysis of LCC-HVDC system with STATCOM at the inverter busbar [J]. Proceedings of the CSEE , 2018 , 38 ( 14 ): 4046 - 4055 .
LI C , BURGOS R , WEN B , et al . Stability analysis of power systems with multiple STATCOMs in close proximity [J]. IEEE Transactions on Power Electronics , 2020 , 35 ( 3 ): 2268 - 2283 .
SHU D W , XIE X R , RAO H , et al . Sub- and super-synchronous interactions between STATCOMs and weak AC/DC transmissions with series compensations [J]. IEEE Transactions on Power Electronics , 2018 , 33 ( 9 ): 7424 - 7437 .
LU J , YUAN X M , HU J B , et al . Motion equation modeling of LCC-HVDC stations for analyzing DC and AC network interactions [J]. IEEE Transactions on Power Delivery , 2020 , 35 ( 3 ): 1563 - 1574 .
LI C , BURGOS R , WEN B , et al . Analysis of STATCOM small-signal impedance in the synchronous d - q frame [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2020 , 8 ( 2 ): 1894 - 1910 .
HARNEFORS L , BONGIORNO M , LUNDBERG S . Input-admittance calculation and shaping for controlled voltage-source converters [J]. IEEE Transactions on Industrial Electronics , 2007 , 54 ( 6 ): 3323 - 3334 .
YUAN Xiaoming , CHENG Shijie , HU Jiabing . Multi-time scale voltage and power angle dynamics in power electronics dominated large power systems [J]. Proceedings of the CSEE , 2016 , 36 ( 19 ): 5145 - 5154 .
HE Yangzan , WEN Zengyin . Analysis of electric power system (volume Ⅱ) [M]. 3rd ed . Wuhan : Huazhong University of Science and Technology Press , 2002 .
XIE Xiaorong , LI Haozhi . Advances on power system oscillation [J]. Chinese Science Bulletin , 2020 , 65 ( 12 ): 1119 - 1129 .
NAYAK O B , GOLE A M , CHAPMAN D G , et al . Control sensitivity indices for stability analysis of HVDC systems [J]. IEEE Transactions on Power Delivery , 1995 , 10 ( 4 ): 2054 - 2060 .
WILLEMS J C . Dissipative dynamical systems: Part Ⅰ general theory [J]. Archive for Rational Mechanics and Analysis , 1972 , 45 ( 5 ): 321 - 351 .
HARNEFORS L , ZHANG L , BONGIORNO M . Frequency-domain passivity-based current controller design [J]. IET Power Electronics , 2008 , 1 ( 4 ): 455 .
CHEN Wei , YE Yunming , ZHOU Baorong , et al . Influence of constant voltage control and predictive constant extinction angle control on small-signal stability of HVDC [J]. Automation of Electric Power Systems , 2020 , 44 ( 18 ): 98 - 106 .
Negative-sequence Current Control Strategy for Hybrid Cascaded STATCOM in Unbalanced Power Grid
Analysis on Interaction Between Power Synchronization Loop and Terminal Voltage Loop in Grid-connected System of Grid-forming Converter
Review of Stability Analysis Methods and Improvement Measures for Power System Dominated by Multiple Virtual Synchronous Generators
Related Author
Haitao XIA
Xiaoping ZHOU
Yifeng LIU
Lerong HONG
An LUO
WEI Miaoyu
LU Daorong
WU Tianhong
Related Institution
College of Automation Engineering, Nanjing University of Aeronautics and Astronautics
School of Electrical and Automation Engineering, Nanjing Normal University
Jiangsu Jinfan Power Technology Co., Ltd.
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, Southeast University