WU Wencheng,WANG Xiaoru,SONG Xinli.Linear State Space Model Identification of AC/DC Hybrid System for Damping Control[J].Automation of Electric Power Systems,2022,46(9):91-98.
WU Wencheng,WANG Xiaoru,SONG Xinli.Linear State Space Model Identification of AC/DC Hybrid System for Damping Control[J].Automation of Electric Power Systems,2022,46(9):91-98. DOI: 10.7500/AEPS20210514006.
Linear State Space Model Identification of AC/DC Hybrid System for Damping Control
To extend the combined deterministic and stochastic systems identification and realization (DSR) method to the AC/DC hybrid systems with multiple DC circuits and realize the automatic state space model identification
a system-order determined method based on singular entropy and Tanh-Sigmoid saturation function is proposed
which has strong anti-noise ability and is more suitable for dense modal systems. On the basis of the determined system-order
a test data set of small-range input-parameter is constructed according to the relationship between the past horizon
future horizon
and the order. By comparing the performance indices of the identification model obtained from each parameter
the optimal identification result is selected. The method does not need to give the system input parameters manually. Finally
the effectiveness and the superiority of the proposed method are verified by the cases of the CIGRE Nordic 32-bus system and China Southern Power Grid.
关键词
Keywords
references
BOGODOROVA T. Modeling, model validation and uncertainty identification for power system analysis [D]. Stockholm, Sweden : KTH Royal Institute of Technology , 2017 .
YE Yunming , WANG Juanjuan , CHEN Wei , et al . Small-signal stability analysis of DC control loop for LCC-HVDC system [J]. Automation of Electric Power Systems , 2021 , 45 ( 16 ): 178 - 188 .
PIPELZADEH Y , CHAUDHURI B , GREEN T C . Coordinated damping control through multiple HVDC systems: a decentralized approach [C]// 2011 IEEE Power and Energy Society General Meeting , July 24-28 , 2011 , Detroit, USA : 1 - 8 .
RODRIGUEZ P , ROUZBEHI K . Multi-terminal DC grids: challenges and prospects [J]. Journal of Modern Power Systems and Clean Energy , 2017 , 5 ( 4 ): 515 - 523 .
徐政 . 交直流电力系统动态行为分析 [M]. 北京 : 机械工业出版社 , 2004 .
XU Zheng . Dynamic behavior analysis of AC/DC power system [M]. Beijing : China Machine Press , 2004 .
YUAN Ye , SUN Yuanzhang , CHENG Lin . Wide area PSS coordinated design based on multi-signal online identification [J]. Automation of Electric Power Systems , 2010 , 34 ( 8 ): 14 - 19 .
CHEN Shuheng , LI Xingyuan . Model identification in AC/DC parallel transmission system based on WAMS [J]. Proceedings of the CSEE , 2008 , 28 ( 4 ): 48 - 53 .
ZHANG Yingmin , LIU Kai , LI Xingyuan , et al . Design of decentralized robust damping controller for VSC-HVDC transmission system based on homotopic transformation [J]. Proceedings of the CSEE , 2016 , 36 ( 8 ): 2093 - 2102 .
LJUNG L , SINGH R , CHEN T . Regularization features in the system identification toolbox [J/OL]. IFAC-PapersOnLine , 2015 , 48 : 745 - 750 [ 2021-04-10 ]. https://doi.org/10.1016/j.ifacol.2015.12. 219 https://doi.org/10.1016/j.ifacol.2015.12.219 .
HOUTZAGER I , VAN WINGERDEN J W , VERHAEGEN M . VARMAX-based closed-loop subspace model identification [C]// Proceedings of the 48th IEEE Conference on Decision and Control (CDC) Held Jointly with 2009 28th Chinese Control Conference , December 15-18 , 2009 , Shanghai, China : 3370 - 3375 .
RUSCIO D D . subspace system identification theory and applications [M]. 6th ed . Porsgrunn, Norway : Telemark Institute of Technology , 2017 .
ZENG Zheng , ZHAO Rongxiang , YANG Huan . Small signal stability analysis based on singular entropy and TLS-ESPRIT algorithm for microgrid [J]. Electric Power Automation Equipment , 2012 , 32 ( 5 ): 7 - 12 .
WANG Shuqing , LIN Yuyu , MENG Yuandong , et al . Model order determination based on singular value decomposition [J]. Journal of Vibration and Shock , 2012 , 31 ( 15 ): 87 - 91 .
ZHU Rui , HANG Xiaochen , JIANG Dong , et al . Improved ERA algorithm based on singular value decomposition and modal order determination [J]. Journal of Vibration , Measurement & Diagnosis, 2018 , 38 ( 1 ): 115 - 122 .
LIAO Yuchen , ZHANG Kun , ZONG Zhouhong , et al . Model order determination method of stochastic subspace based on S-type function [J]. Journal of Southeast University (Natural Science Edition) , 2020 , 50 ( 3 ): 440 - 446 .
DI RUSCIO D . Closed and open loop subspace system identification of the Kalman filter [J]. Modeling, Identification and Control: a Norwegian Research Bulletin , 2009 , 30 ( 2 ): 71 - 86 .
AZIZ M H R A , MOHD-MOKHTAR R . Performance measure of some subspace-based methods for closed-loop system identification [C]// 2010 Second International Conference on Computational Intelligence, Modelling and Simulation , September 28-30 , 2010 , Bali, Indonesia : 255 - 260 .
SUO Jianglei , HU Zhijian , LIU Yukai , et al . Power system state space identification based on multi-innovation coupling least square algorithm [J]. Electric Power Automation Equipment , 2015 , 35 ( 7 ): 65 - 73 .
ALMUTAIRI A . Enhancement of power system stability using wide area measurement system based damping controller [D]. Manchester, UK : University of Manchester , 2011 .
ERIKSSON R , SÖDER L . Optimal coordinated control of multiple HVDC links for power oscillation damping based on model identification [J]. European Transactions on Electrical Power , 2012 , 22 ( 2 ): 188 - 205 .