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Estimation of Oscillatory Mode Activity from PMU Measurements

Hallvar Haugdal, Kjetil Uhlen, Daniel Muller, Hjortur Johannsson
2020 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)  
We propose a method for estimating the activity of oscillatory modes in power systems.  ...  It is expected that using this excitation measure will result in a more robust controller that is less prone to disturbances and noise.  ...  Further, the left and right eigenvectors describe controllability-and observability mode shapes for each of the modes.  ... 
doi:10.1109/isgt-europe47291.2020.9248789 dblp:conf/isgteurope/HaugdalUMJ20 fatcat:fz2fq7x7gfe33npvix2kvaqhpe

Synchrophasor Based Ocillation Detection: A Case Study for Indian Power Grid

Vaishali Rampurkar
2015 International Journal of Engineering Research and  
This paper presents the analysis of low frequency oscillation modes using the data from Phasor measurement unit located in Western and northern region of the country.  ...  The modes with low frequency oscillations were observed in both Western& northern region of the Indian grid.The Matrix Pencil technique was used to identify the oscillatory modes in system during the occurrence  ...  ACKNOWLEDGMENT The authors gratefully acknowledge the support provided byCenter of Excellence in Complex and Nonlinear DynamicalSystems, VJTI, Mumbai & Western Region Load DespatchCentre for valuable discussions  ... 
doi:10.17577/ijertv4is040029 fatcat:qwdlt47m5fehtnmq4sfu6q3dge

Experimental validation of an integrated controls-structures design methodology

Peiman G. Maghami, Kenny B. Elliott, Joseph E. Walz, Sandeep Gupta
1996 Journal of Guidance Control and Dynamics  
Using Linear-Quadratic-Guassian optimal dissipative controllers, it is observed that the redesigned structure leads to signicantly improved performance with alternate controllers as well.  ...  Experimental results indicate that the structure redesigned using the integrated design methodology requires signicantly less average control power than the nominal structure with control-optimized designs  ...  Bi-directional thrusters are used as control actuators and for disturbance injection; and collocated accelerometers are used for feedback control measurements.  ... 
doi:10.2514/3.21622 fatcat:ira7sctszjevnfqgui2o7d3iim

Nonlinear Observer Design for Dynamic Positioning Control of a Surface Vessel
선박운동제어를 위한 비선형 관측기 설계

Y.B. Kim, J.S. Jang
2012 Journal of the Korea Society For Power System Engineering  
Concluding Remarks In this paper, the authors proposed a new approach for dynamic positioning problem in the harbor area by using nonlinear observer and sliding mode controller.  ...  With uncertainty and complexity of ship dynamics and environmental disturbances, the authors propose a robust controller by using sliding mode control(SMC) technique.  ... 
doi:10.9726/kspse.2012.16.6.079 fatcat:k6zzdm3k7rcktmhdcvabezw54a

Assessment of Residue Approach & Geometric approach to Select Wide-Area Signals for Power System Damping Control

2016 International Journal of Science and Research (IJSR)  
result conform that wide-area damping control scheme is more effective than local control for damping of inter-area oscillation.  ...  The robustness analysis, simulations and different results show that in the case of wide-area signals selection , the geometric approach is more reliable and usefull the the residue approach.Also, the  ...  Rather this can be effectively damped by the use of remote signals from a distant location or combination of several locations.  ... 
doi:10.21275/v5i6.nov164609 fatcat:maieyhjabjcsrnknassdbk56hm

Analysis and enhancement of small-signal stability on DFIG based wind integrated power system through optimal design of linear quadratic regulator

Dipesh Kumar, Kalyan Chatterjee
2020 IET Renewable Power Generation  
The effects of transient disturbance on WIPS are examined without and with a controller in terms of performance and stability of the system.  ...  An artificial bee colony (ABC)-based swarm optimisation technique is used to evaluate the optimal weighting matrices of the LQR controller in parallel with minimising the performance index and dynamic  ...  Control strategies for WIPS The WECS faces severe consequences during terminal voltage dips and grid frequency deviation under system disturbance.  ... 
doi:10.1049/iet-rpg.2018.6095 fatcat:rmowfmfbzncshdcprhi3mrm2tm

Coordinated Control of Offshore Wind Farm and Onshore HVDC Converter for Effective Power Oscillation Damping

Yousef Pipelzadeh, Nilanjan Ray Chaudhuri, Balarko Chaudhuri, Tim C. Green
2017 IEEE Transactions on Power Systems  
Coordinated control over both onshore VSC and aggregated WF output overcomes the above limitations and is shown to be effective for power oscillation damping.  ...  A homotopy approach is used to design the coordinated controller, which can be implemented locally (at offshore WF and onshore converter site) using a decentralized architecture.  ...  The effectiveness of the PSS to damp power oscillations depends on several factors (e.g. system topology, load type and distribution, location of the WF and HVDC with the AC grids point of connection.  ... 
doi:10.1109/tpwrs.2016.2581984 fatcat:wryejppjjfentghuvmchges4bi

Damping of electro-mechanical oscillations in a multimachine system by direct load control

O. Samuelsson, B. Eliasson
1997 IEEE Transactions on Power Systems  
Active power mode controllability and phase angle mode observability are determined from the eigenvectors of a differential algebraic description of the uncontrolled system.  ...  Utility controlled customer loads as actuators present new possibilities for power system control.  ...  ACKNOWLEDGEMENTS The work reported in this paper is supported by Sydkraft AB and NUTEK, which is gratefully acknowledged.  ... 
doi:10.1109/59.627865 fatcat:cmxtj6n7und7vk7yore25x6qlm

Robust reference tracking and Load rejection on Non-linear system using Controllers

Renjini G.S, Deepa THANGAVELUSAMY
2021 GAZI UNIVERSITY JOURNAL OF SCIENCE  
Highlights • This paper focuses on different control topologies of power converter • A Non-Linear system was investigated in steady state and transient region. • Proposed system was regulated the DC output  ...  voltage in load disturbances region.  ...  Comparing these results, it was observed that LQR enhances the system with the stable controlled operation and it is efficiently used for 200W SMPS applications.  ... 
doi:10.35378/gujs.947882 fatcat:h2gg6lu5azc7tngeohw7qnmnqa

Optimal robust stabilizer design based on UPFC for interconnected power systems considering time delay

Hamid Reza Koofigar, Ghader Isazadeh
2017 Archives of Electrical Engineering  
The proposed controller is applied to a multi-machine interconnected power system from the IRAN power grid.  ...  A robust auxiliary wide area damping controller is proposed for a unified power flow controller (UPFC).  ...  Parameters with maximum observability for each critical mode Maximum observability Mode shape Mode index Table 3 . 3 Margin values of time delays with different choices for W 2Table 4.  ... 
doi:10.1515/aee-2017-0034 fatcat:hmbutjtajvdildkdbejcxrtwmq

Distributed wide-area control of power system oscillations under communication and actuation constraints

ABHISHEK JAIN, ARANYA CHAKRABORTTY, EMRAH BIYIK
2018 Zenodo  
In the current state-of-art, distributed controllers in power systems are executed over fixed communication topologies that are most often agnostic of the magnitude and location of the incoming disturbance  ...  In this paper a distributed Model Predictive Control design is presented for inter-area oscillation damping in power systems under two critical cyber–physical constraints — namely, communication constraints  ...  Acknowledgments The work of the second author was partly supported by the US National Science Foundation under grants ECCS 1054394 and ECCS 1544871.  ... 
doi:10.5281/zenodo.1490334 fatcat:5t66ghsug5dy5pyppbgni6ffea

Distributed wide-area control of power system oscillations under communication and actuation constraints

Abhishek Jain, Aranya Chakrabortty, Emrah Biyik
2018 Control Engineering Practice  
In the current state-of-art, distributed controllers in power systems are executed over fixed communication topologies that are most often agnostic of the magnitude and location of the incoming disturbance  ...  In this paper a distributed Model Predictive Control design is presented for inter-area oscillation damping in power systems under two critical cyber-physical constraints -namely, communication constraints  ...  Acknowledgments The work of the second author was partly supported by the US National Science Foundation under grants ECCS 1054394 and ECCS 1544871.  ... 
doi:10.1016/j.conengprac.2018.03.003 fatcat:wlfge3hskza3pkkqq7ioruino4

Experimental identification of smart material coupling effects in composite structures

S Chesne, C Jean-Mistral, L Gaudiller
2013 Smart materials and structures (Print)  
It allowed a reliable, powerful modal control system to be built, controlling two modes of the structure.  ...  A Linear Quadratic Gaussian algorithm was used to determine the modal controller-observer gains.  ...  Several active control strategies can be used, such as co-located control, as proposed in [8] .  ... 
doi:10.1088/0964-1726/22/7/075007 fatcat:wapsic4gk5cwdiesp5mkipf67e

Optimal sensor placement for modal identification using system-realization methods

Daniel C. Kammer
1996 Journal of Guidance Control and Dynamics  
GUIDANCE, VOL. 19, NO. 3: uncontrolled modes and not use them in the controller feedback, however, this requires more real-time computation power. IV.  ...  Kwan* Automation and Robotics Research Institute, Fort Worth, Texas 76118 Introduction LIDING mode control is a powerful robust control technique.  ... 
doi:10.2514/3.21688 fatcat:fw4frqlesvgonfhmqku7nvahxi

Design, Construction, and Modeling of a Flexible Rotor Active Magnetic Bearing Test Rig

Simon E. Mushi, Zongli Lin, Paul E. Allaire
2012 IEEE/ASME transactions on mechatronics  
Models for the power amplifiers, position sensors, signal conditioning and data converter hardware were developed, verified experimentally and included in the overall system model.  ...  A PID controller was developed and tuned to levitate the rotor and enable further system characterization.  ...  The fourth mode at 1554.5 Hz has less observable motion at the AMB locations.  ... 
doi:10.1109/tmech.2011.2160456 fatcat:l5ld3smvl5cgppygk2eodcxr64
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