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New Formulations for the Unit Commitment Problem - Optimal Control and Switching-Time Parameterization Approaches

Luís A. C. Roque, Fernando A.C.C. Fontes, Dalila B.M.M. Fontes
2017 Proceedings of the 14th International Conference on Informatics in Control, Automation and Robotics  
Then, the problem is formulated as a switching time dynamic optimization problem involving only real-valued controls.  ...  The Unit Commitment Problem (UCP) is a well-known combinatorial optimization problem in power systems.  ...  , and NORTE-45-2015-02-Stride.  ... 
doi:10.5220/0006465603260331 dblp:conf/icinco/RoqueFF17 fatcat:ddxxtj3tjbh5vfdkzlgt3a67pu

Real-Time Dispatch for Multi-Unit Hydroelectric Plants with AC Optimal Power Flow: The Case of the Santo Antonio System

Danilo P. C. Filho, Erlon C. Finardi, Antonio F. C. Aquino
2021 IEEE Access  
This paper proposes a technique for incorporating ACPF constraints in real-time hydro dispatch, promoting widespread methods and optimization tools.  ...  The testbed is the Santo Antônio system, composite by 50 generating units, 13 power transformers, and 41 buses.  ...  Ui ref Parameterized unit i auxiliary reference for optimal power flow solution (binary). ΔU max Maximum switching operations relative to an auxiliary reference. I.  ... 
doi:10.1109/access.2021.3124041 fatcat:ch4pzrfd4jdw3mlrn52qccqtci

A Deterministic Approach to Locating Series Flow-Controllers Within Transmission Systems to Alleviate Congestion

Paul Cuffe, Andrew Keane
2017 Figshare  
To articulate the value that such flexibility might provide, a new simplified unit commitment and dispatch formulation is presented, which integrally uses series flow-controllers to manage congestion and  ...  The present work proposes a new concept for power system control, and embeds series flow-controllers within meshed transmission networks to gauge the extent to which their dispatchable flows can be used  ...  Paul Cuffe (paul.cuffe@ucd.ie) was a visiting scholar at the University of Melbourne for portion of the preparation time of this manuscript.  ... 
doi:10.6084/m9.figshare.5441680 fatcat:am4n2rnmdvfhnl4womdzjbjxye

A deterministic approach to locating series flow-controllers within transmission systems to alleviate congestion

Paul Cuffe, Andrew Keane
2018 Electric power systems research  
To articulate the value that such flexibility might provide, a new simplified unit commitment and dispatch formulation is presented, which integrally uses series flow-controllers to manage congestion and  ...  The present work proposes a new concept for power system control, and embeds series flow-controllers within meshed transmission networks to gauge the extent to which their dispatchable flows can be used  ...  Paul Cuffe (paul.cuffe@ucd.ie) was a visiting scholar at the University of Melbourne for portion of the preparation time of this manuscript.  ... 
doi:10.1016/j.epsr.2017.09.015 fatcat:uognp4rejrfrji5qjc7za6jkou

Performance analysis of industrial ethernet networks by means of timed model-checking [chapter]

Daniel Witsch, Birgit Vogel-Heuser, Jean-Marc Faure, Gaëlle Marsal
2006 Information Control Problems in Manufacturing 2006  
Ethernet networks are promising for the harmonization of the communication technologies in manufacturing automation but they have not been specifically intended for industrial control applications.  ...  Considering a real-time Ethernet network as a case-study, this paper describes sophisticated modelingtechniques, which help to alleviate the state-space explosion, for the timed model-checker Uppaal.  ...  devices, which connect the network to the controlling devices and store-and-forward Ethernet switches.  ... 
doi:10.1016/b978-008044654-7/50151-5 fatcat:ujvtxobrp5ae3ej6zr6pnm6chu

Stochastic optimal generation bid to electricity markets with emissions risk constraints

F.-Javier Heredia, Julián Cifuentes-Rubiano, Cristina Corchero
2018 Journal of Environmental Management  
This work investigates the influence of the emissions reduction plan and the incorporation of the medium-term derivative commitments in the optimal generation bidding strategy for the day-ahead electricity  ...  Two different technologies have been considered: the high-emission technology of thermal coal units and the low-emission technology of combined cycle gas turbine units.  ...  Acknowledgements We thank the staff of the Wholesale Energy Markets Division of Gas Natural Fenosa and the anonymous reviewers for their valuable comments and suggestions. References  ... 
doi:10.1016/j.jenvman.2017.11.010 pmid:29195168 fatcat:c5fjtmz5njhkvhblxxlyngfoku

PERFORMANCE ANALYSIS OF INDUSTRIAL ETHERNET NETWORKS BY MEANS OF TIMED MODEL-CHECKING

Daniel Witsch, Birgit Vogel-Heuser, Jean-Marc Faure, Gaëlle Marsal
2006 IFAC Proceedings Volumes  
Ethernet networks are promising for the harmonization of the communication technologies in manufacturing automation but they have not been specifically intended for industrial control applications.  ...  Considering a real-time Ethernet network as a case-study, this paper describes sophisticated modelingtechniques, which help to alleviate the state-space explosion, for the timed model-checker Uppaal.  ...  devices, which connect the network to the controlling devices and store-and-forward Ethernet switches.  ... 
doi:10.3182/20060517-3-fr-2903.00063 fatcat:jjdfxfjqkfbtrh4uiudc7v6gve

Numerical Trajectory Optimization with Swarm Intelligence and Dynamic Assignment of Solution Structure

Pradipto Ghosh, Bruce A. Conway
2012 Journal of Guidance Control and Dynamics  
., “A Novel Approach for Unit Commitment Problem via an Effective Hybrid Particle Swarm Optimization,” IEEE Transactions on Power Systems, Vol. 21, No. 1, 2006, pp. 411-418. doi: 10.1109/TPWRS.2005.860907  ...  Then such a problem can be posed as a parameter optimization problem where the parameters are the starting values Syqi Of each control (1 or —1), the number of switches n, (1, 2, or 3), the switching times  ... 
doi:10.2514/1.55594 fatcat:fy577nyufvbrba7odmsauab344

An energy management system for off-grid power systems

Daniel Zelazo, Ran Dai, Mehran Mesbahi
2012 Energy Systems, Springer Verlag  
This work extends the principles of unit commitment and economic dispatch problems to off-grid power systems where the loads are also schedulable.  ...  We propose a general optimization framework for solving the energy management problem in these systems.  ...  Acknowledgements The authors would like to thank the associate editor and reviewers for the in-depth comments and discussions regarding this work.  ... 
doi:10.1007/s12667-012-0050-4 fatcat:l6stj7edh5gpzom3k43nojafbq

Biological network design strategies: discovery through dynamic optimization

Bambang S. Adiwijaya, Paul I. Barton, Bruce Tidor
2006 Molecular Biosystems  
Here we investigate an approach to analyze the relationship between a network structure and its function using the framework of optimization.  ...  We applied optimization methodology to study a reversible modification network unit commonly found in signal transduction systems, and we explored the use of this methodology to discover design principles  ...  Acknowledgements We are grateful for discussions with Douglas A. Lauffenburger, Drew Endy, and members of our research groups, as well as for the comments of an anonymous referee.  ... 
doi:10.1039/b610090b pmid:17216046 fatcat:urotgzrcofgefhjmhw2hyx5aka

A Decade Survey of Engineering Applications of Genetic Algorithm in Power System Optimization

Chichebe. M. Akachukwu, Abiodun M. Aibinu, Mark N. Nwohu, Habeeb Bello Salau
2014 2014 5th International Conference on Intelligent Systems, Modelling and Simulation  
The limitations on the use of conventional methods and stochastic search paved the way to wide applications of GA optimization techniques in tackling problems related to engineering and sciences.  ...  The utilization of Genetic Algorithms (GA) in tackling engineering problems has been a major issue arousing the curiosity of researchers and practitioners in the area of systems and engineering research  ...  A design optimization problem of the FACTS-based controller was formulated; both the PSO and GA optimization techniques were used to search for optimal controller parameters [13] .  ... 
doi:10.1109/isms.2014.15 fatcat:ntokkmrpwrgm5nbh45spfh3pma

Realistic modeling of a combined heat and power plant in the context of mixed integer linear programming

Thomas Weber, Nina Strobel, Thomas Kohne, Jakob Wolber, Eberhard Abele
2018 Energy Informatics  
Power gradients are mapped by differentiating between the control signal of the CHP unit and the actually generated power output for thermal and electrical power.  ...  Mixed integer linear programming (MILP) is a powerful tool for solving mathematical optimization problems.  ...  Acknowledgements The authors gratefully acknowledge the financial support of the Kopernikus-Project "SynErgie" by the Federal Ministry of Education and Research (BMBF) and the project supervision by the  ... 
doi:10.1186/s42162-018-0037-z fatcat:jqcdh7zbbrea5fcwgut7stn3oe

Particle Swarm Optimization: Basic Concepts, Variants and Applications in Power Systems

Y. del Valle, G.K. Venayagamoorthy, S. Mohagheghi, J.-C. Hernandez, R.G. Harley
2008 IEEE Transactions on Evolutionary Computation  
For each application, technical details that are required for applying PSO, such as its type, particle formulation (solution representation), and the most efficient fitness functions are also discussed  ...  Particle swarm optimization (PSO), part of the swarm intelligence family, is known to effectively solve large-scale nonlinear optimization problems.  ...  For the unit-commitment scheduling problem, Miranda and Win-Oo [224] have presented the application of differential evolutionary particle swarm optimization to the unit commitment-generator scheduling  ... 
doi:10.1109/tevc.2007.896686 fatcat:adc66fptffebrgaapbjvb2imj4

Unified Modeling and Prediction of Weather and Climate: A 25-Year Journey

Andrew Brown, Sean Milton, Mike Cullen, Brian Golding, John Mitchell, Ann Shelly
2012 Bulletin of The American Meteorological Society - (BAMS)  
Practical experience in developing and using the U.K. Met Office Unified Model for both weather and climate prediction provides lessons about both the benefits and challenges of seamless prediction.  ...  Effort is being invested in exploring stochastic approaches to the parameterization problem both for purposes of generating more realistic ensemble spread (Shutts 2005) and to try to make performance  ...  In terms of the traditional atmospheric physics parameterizations used for both weather and climate, our approach now is to, as far as possible, keep them identical for use on all time scales.  ... 
doi:10.1175/bams-d-12-00018.1 fatcat:f7mfvfs2dfagfpdcehatvvbo2q

Distributed Control of Clustered Populations of Thermostatic Loads in Multi-Area Systems: A Mean Field Game Approach

Vincenzo Trovato, Antonio De Paola, Goran Strbac
2020 Energies  
This paper proposes a scalable distributed solution for the operation of large populations of TCLs providing frequency response and performing energy arbitrage.  ...  A mean field game formulation is used to implement a compact description of the interactions between typical power system characteristics and TCLs flexibility properties.  ...  Conflicts of Interest: The authors declare no conflict of interest. Energies 2020, 13, 6483  ... 
doi:10.3390/en13246483 fatcat:2lj4v26ajfarbprhqrbbxqqqmu
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