Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency

This paper proposes an effective control methodology for the Energy Storage System (ESS), compensating for renewable energy intermittency. By connecting generation variability and the preset service range of the State of Charge (SOC), this methodology successfully secures the desired SOC range while...

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Main Authors: Jae Woong Shim, Heejin Kim, Kyeon Hur
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/7/1190
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author Jae Woong Shim
Heejin Kim
Kyeon Hur
author_facet Jae Woong Shim
Heejin Kim
Kyeon Hur
author_sort Jae Woong Shim
collection DOAJ
description This paper proposes an effective control methodology for the Energy Storage System (ESS), compensating for renewable energy intermittency. By connecting generation variability and the preset service range of the State of Charge (SOC), this methodology successfully secures the desired SOC range while smoothing out power fluctuations. Adaptive to grid conditions, it can adjust response time (control bandwidth) of the ESS via energy feedback coefficients subject to the ESS capacity and its SOC range. This flexibility facilitates the process of developing ESS operation and planning strategies. Mathematical analysis proves that the proposed method controls the ESS to perform best for specific frequency bands associated with power fluctuation. Time-domain simulation studies along with power-spectrum analysis using PSCAD and MATLAB demonstrate the excellent power-smoothing performance to the power grid.
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spelling doaj.art-ba88776ad02445e5b3dd243d3601adc12022-12-22T04:23:26ZengMDPI AGEnergies1996-10732019-03-01127119010.3390/en12071190en12071190Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable IntermittencyJae Woong Shim0Heejin Kim1Kyeon Hur2Department of Energy Engineering, Inje University, Gimhae 50834, KoreaSchool of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, KoreaSchool of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, KoreaThis paper proposes an effective control methodology for the Energy Storage System (ESS), compensating for renewable energy intermittency. By connecting generation variability and the preset service range of the State of Charge (SOC), this methodology successfully secures the desired SOC range while smoothing out power fluctuations. Adaptive to grid conditions, it can adjust response time (control bandwidth) of the ESS via energy feedback coefficients subject to the ESS capacity and its SOC range. This flexibility facilitates the process of developing ESS operation and planning strategies. Mathematical analysis proves that the proposed method controls the ESS to perform best for specific frequency bands associated with power fluctuation. Time-domain simulation studies along with power-spectrum analysis using PSCAD and MATLAB demonstrate the excellent power-smoothing performance to the power grid.https://www.mdpi.com/1996-1073/12/7/1190power-smoothingwind turbineenergy storage systemESS sizingenergy feedback
spellingShingle Jae Woong Shim
Heejin Kim
Kyeon Hur
Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
Energies
power-smoothing
wind turbine
energy storage system
ESS sizing
energy feedback
title Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
title_full Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
title_fullStr Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
title_full_unstemmed Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
title_short Incorporating State-of-Charge Balancing into the Control of Energy Storage Systems for Smoothing Renewable Intermittency
title_sort incorporating state of charge balancing into the control of energy storage systems for smoothing renewable intermittency
topic power-smoothing
wind turbine
energy storage system
ESS sizing
energy feedback
url https://www.mdpi.com/1996-1073/12/7/1190
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