The feasibility of replacing or upgrading utility distribution transformers during routine maintenance

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Description

It is estimated that electric utilities use about 40 million distribution transformers in supplying electricity to customers in the United States. Although utility distribution transformers collectively have a high average efficiency, they account for approximately 61 billion kWh of the 229 billion kWh of energy lost annually in the delivery of electricity. Distribution transformers are being replaced over time by new, more efficient, lower-loss units during routine utility maintenance of power distribution systems. Maintenance is typically not performed on units in service. However, units removed from service with appreciable remaining life are often refurbished and returned to stock. Distribution transformers ... continued below

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105 p.

Creation Information

Barnes, P.R.; Van Dyke, J.W.; McConnell, B.W.; Cohn, S.M. & Purucker, S.L. April 1, 1995.

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Description

It is estimated that electric utilities use about 40 million distribution transformers in supplying electricity to customers in the United States. Although utility distribution transformers collectively have a high average efficiency, they account for approximately 61 billion kWh of the 229 billion kWh of energy lost annually in the delivery of electricity. Distribution transformers are being replaced over time by new, more efficient, lower-loss units during routine utility maintenance of power distribution systems. Maintenance is typically not performed on units in service. However, units removed from service with appreciable remaining life are often refurbished and returned to stock. Distribution transformers may be removed from service for many reasons, including failure, over- or underloading, or line upgrades such as voltage changes or rerouting. When distribution transformers are removed from service, a decision must be made whether to dispose of the transformer and purchase a lower-loss replacement or to refurbish the transformer and return it to stock for future use. This report contains findings and recommendations on replacing utility distribution transformers during routine maintenance, which is required by section 124(c) of the Energy Policy Act of 1992. The objectives of the study are to evaluate the practicability, cost-effectiveness, and potential energy savings of replacing or upgrading existing transformers during routine utility maintenance and to develop recommendations on was to achieve the potential energy savings.

Physical Description

105 p.

Notes

OSTI as DE95013967

Source

  • Other Information: PBD: Apr 1995

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  • Other: DE95013967
  • Report No.: ORNL--6804/R1
  • Grant Number: AC05-84OR21400
  • DOI: 10.2172/82474 | External Link
  • Office of Scientific & Technical Information Report Number: 82474
  • Archival Resource Key: ark:/67531/metadc783191

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Creation Date

  • April 1, 1995

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Jan. 25, 2016, 3:53 p.m.

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Barnes, P.R.; Van Dyke, J.W.; McConnell, B.W.; Cohn, S.M. & Purucker, S.L. The feasibility of replacing or upgrading utility distribution transformers during routine maintenance, report, April 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc783191/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.