Optimal Power Management Strategy for Energy Storage with Stochastic Loads

In this paper, a power management strategy (PMS) has been developed for the control of energy storage in a system subjected to loads of random duration. The PMS minimises the costs associated with the energy consumption of specific systems powered by a primary energy source and equipped with energy...

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Main Authors: Stefano Pietrosanti, William Holderbaum, Victor M. Becerra
Format: Article
Language:English
Published: MDPI AG 2016-03-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/9/3/175
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author Stefano Pietrosanti
William Holderbaum
Victor M. Becerra
author_facet Stefano Pietrosanti
William Holderbaum
Victor M. Becerra
author_sort Stefano Pietrosanti
collection DOAJ
description In this paper, a power management strategy (PMS) has been developed for the control of energy storage in a system subjected to loads of random duration. The PMS minimises the costs associated with the energy consumption of specific systems powered by a primary energy source and equipped with energy storage, under the assumption that the statistical distribution of load durations is known. By including the variability of the load in the cost function, it was possible to define the optimality criteria for the power flow of the storage. Numerical calculations have been performed obtaining the control strategies associated with the global minimum in energy costs, for a wide range of initial conditions of the system. The results of the calculations have been tested on a MATLAB/Simulink model of a rubber tyre gantry (RTG) crane equipped with a flywheel energy storage system (FESS) and subjected to a test cycle, which corresponds to the real operation of a crane in the Port of Felixstowe. The results of the model show increased energy savings and reduced peak power demand with respect to existing control strategies, indicating considerable potential savings for port operators in terms of energy and maintenance costs.
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spelling doaj.art-e8f40678360346299486e152edd43ec32022-12-22T02:08:22ZengMDPI AGEnergies1996-10732016-03-019317510.3390/en9030175en9030175Optimal Power Management Strategy for Energy Storage with Stochastic LoadsStefano Pietrosanti0William Holderbaum1Victor M. Becerra2School of Systems Engineering, University of Reading, Whiteknights, Reading RG6 6AY, UKSchool of Systems Engineering, University of Reading, Whiteknights, Reading RG6 6AY, UKSchool of Engineering, University of Portsmouth, Anglesea Road, Portsmouth PO1 3DJ, UKIn this paper, a power management strategy (PMS) has been developed for the control of energy storage in a system subjected to loads of random duration. The PMS minimises the costs associated with the energy consumption of specific systems powered by a primary energy source and equipped with energy storage, under the assumption that the statistical distribution of load durations is known. By including the variability of the load in the cost function, it was possible to define the optimality criteria for the power flow of the storage. Numerical calculations have been performed obtaining the control strategies associated with the global minimum in energy costs, for a wide range of initial conditions of the system. The results of the calculations have been tested on a MATLAB/Simulink model of a rubber tyre gantry (RTG) crane equipped with a flywheel energy storage system (FESS) and subjected to a test cycle, which corresponds to the real operation of a crane in the Port of Felixstowe. The results of the model show increased energy savings and reduced peak power demand with respect to existing control strategies, indicating considerable potential savings for port operators in terms of energy and maintenance costs.http://www.mdpi.com/1996-1073/9/3/175energy storagepower managementoptimizationstochastic loadsflywheelRTG crane
spellingShingle Stefano Pietrosanti
William Holderbaum
Victor M. Becerra
Optimal Power Management Strategy for Energy Storage with Stochastic Loads
Energies
energy storage
power management
optimization
stochastic loads
flywheel
RTG crane
title Optimal Power Management Strategy for Energy Storage with Stochastic Loads
title_full Optimal Power Management Strategy for Energy Storage with Stochastic Loads
title_fullStr Optimal Power Management Strategy for Energy Storage with Stochastic Loads
title_full_unstemmed Optimal Power Management Strategy for Energy Storage with Stochastic Loads
title_short Optimal Power Management Strategy for Energy Storage with Stochastic Loads
title_sort optimal power management strategy for energy storage with stochastic loads
topic energy storage
power management
optimization
stochastic loads
flywheel
RTG crane
url http://www.mdpi.com/1996-1073/9/3/175
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AT williamholderbaum optimalpowermanagementstrategyforenergystoragewithstochasticloads
AT victormbecerra optimalpowermanagementstrategyforenergystoragewithstochasticloads