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Title: Energy storage requirements of dc microgrids with high penetration renewables under droop control

Abstract

Energy storage is a important design component in microgrids with high penetration renewable sources to maintain the system because of the highly variable and sometimes stochastic nature of the sources. Storage devices can be distributed close to the sources and/or at the microgrid bus. In addition, storage requirements can be minimized with a centralized control architecture, but this creates a single point of failure. Distributed droop control enables a completely decentralized architecture but, the energy storage optimization becomes more difficult. Our paper presents an approach to droop control that enables the local and bus storage requirements to be determined. Given a priori knowledge of the design structure of a microgrid and the basic cycles of the renewable sources, we found that the droop settings of the sources are such that they minimize both the bus voltage variations and overall energy storage capacity required in the system. This approach can be used in the design phase of a microgrid with a decentralized control structure to determine appropriate droop settings as well as the sizing of energy storage devices.

Authors:
 [1];  [1];  [1];  [2]
  1. Michigan Technological Univ., Houghton, MI (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1123297
Alternate Identifier(s):
OSTI ID: 1433585
Report Number(s):
SAND-2013-10581J
Journal ID: ISSN 0142-0615; PII: S0142061514007972
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
International Journal of Electrical Power and Energy Systems
Additional Journal Information:
Journal Volume: 68; Journal Issue: C; Journal ID: ISSN 0142-0615
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; microgrid; energy storage; optimization; control

Citation Formats

Weaver, Wayne W., Robinett, Rush D., Parker, Gordon G., and Wilson, David G. Energy storage requirements of dc microgrids with high penetration renewables under droop control. United States: N. p., 2015. Web. doi:10.1016/j.ijepes.2014.12.070.
Weaver, Wayne W., Robinett, Rush D., Parker, Gordon G., & Wilson, David G. Energy storage requirements of dc microgrids with high penetration renewables under droop control. United States. doi:10.1016/j.ijepes.2014.12.070.
Weaver, Wayne W., Robinett, Rush D., Parker, Gordon G., and Wilson, David G. Fri . "Energy storage requirements of dc microgrids with high penetration renewables under droop control". United States. doi:10.1016/j.ijepes.2014.12.070. https://www.osti.gov/servlets/purl/1123297.
@article{osti_1123297,
title = {Energy storage requirements of dc microgrids with high penetration renewables under droop control},
author = {Weaver, Wayne W. and Robinett, Rush D. and Parker, Gordon G. and Wilson, David G.},
abstractNote = {Energy storage is a important design component in microgrids with high penetration renewable sources to maintain the system because of the highly variable and sometimes stochastic nature of the sources. Storage devices can be distributed close to the sources and/or at the microgrid bus. In addition, storage requirements can be minimized with a centralized control architecture, but this creates a single point of failure. Distributed droop control enables a completely decentralized architecture but, the energy storage optimization becomes more difficult. Our paper presents an approach to droop control that enables the local and bus storage requirements to be determined. Given a priori knowledge of the design structure of a microgrid and the basic cycles of the renewable sources, we found that the droop settings of the sources are such that they minimize both the bus voltage variations and overall energy storage capacity required in the system. This approach can be used in the design phase of a microgrid with a decentralized control structure to determine appropriate droop settings as well as the sizing of energy storage devices.},
doi = {10.1016/j.ijepes.2014.12.070},
journal = {International Journal of Electrical Power and Energy Systems},
number = C,
volume = 68,
place = {United States},
year = {Fri Jan 09 00:00:00 EST 2015},
month = {Fri Jan 09 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 16 works
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