A control system for improved battery utilization in a PV-powered peak-shaving system

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Description

Photovoltaic (PV) power systems offer the prospect of allowing a utility company to meet part of the daily peak system load using a renewable resource. Unfortunately, some utilities have peak system- load periods that do not match the peak production hours of a PV system. Adding a battery energy storage system to a grid-connected PV power system will allow dispatching the stored solar energy to the grid at the desired times. Batteries, however, pose system limitations in terms of energy efficiency, maintenance, and cycle life. A new control system has been developed, based on available PV equipment and a data ... continued below

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4 p.

Creation Information

Palomino, E; Stevens, J. & Wiles, J. August 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Palomino, E Salt River Project, Phoenix, AZ (United States)
  • Stevens, J. Sandia National Labs., Albuquerque, NM (United States)
  • Wiles, J. New Mexico State Univ., Las Cruces, NM (United States). Southwest Technology Development Inst.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Photovoltaic (PV) power systems offer the prospect of allowing a utility company to meet part of the daily peak system load using a renewable resource. Unfortunately, some utilities have peak system- load periods that do not match the peak production hours of a PV system. Adding a battery energy storage system to a grid-connected PV power system will allow dispatching the stored solar energy to the grid at the desired times. Batteries, however, pose system limitations in terms of energy efficiency, maintenance, and cycle life. A new control system has been developed, based on available PV equipment and a data acquisition system, that seeks to minimize the limitations imposed by the battery system while maximizing the use of PV energy. Maintenance requirements for the flooded batteries are reduced, cycle life is maximized, and the battery is operated over an efficient range of states of charge. This paper presents design details and initial performance results on one of the first installed control systems of this type.

Physical Description

4 p.

Notes

OSTI as DE96012941

Source

  • 25. photovoltaic solar energy conference, Washington, DC (United States), 13-17 May 1996

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  • Other: DE96012941
  • Report No.: SAND--96-1650C
  • Report No.: CONF-960513--19
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 279501
  • Archival Resource Key: ark:/67531/metadc672005

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Creation Date

  • August 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Sept. 6, 2016, 8:32 p.m.

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Palomino, E; Stevens, J. & Wiles, J. A control system for improved battery utilization in a PV-powered peak-shaving system, article, August 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc672005/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.