Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Investigation and Estimation of Transformer Load Factor for Rationalization of Transformer's Efficiency

변압기 효율 적정화를 위한 변압기 부하율 조사 및 추정

  • Received : 2015.11.24
  • Accepted : 2015.12.07
  • Published : 2016.01.31
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Abstract

In this paper, We investigate the number of 795 transformer in the private electrical facilities and analyze the annual load factor. The results show that the annual load factor of transformer is 20.16% in manufacturing industry, education services(school) is 9.59%, retail and wholesale services is 19.68%, resort and leisure industry is 10.93%, office building is 13.10%, and apartment houses is 14.69%. Education services, resort and leisure industry are being operated with a very low annual load factor. The relatively small capacity of less than 500kVA transformer also been analyzed that is being operated with a low load factor. Therefore, In order to minimize the power loss of the transformer, it is advisable to complement the Transformer Efficiency Management system to be designed the efficiency is good transformer when the load is low. Analysis results will be used as the basis for the provision of transformer efficiency management system and be used High-efficiency transformers promotion system.

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References

  1. Korea Energy Agency, www.kemco.or.kr
  2. Efficiency Management Operating Code, Ministry of Trade, Industry and Energy, 2012.
  3. Y.P. Wang, H.M Hong, S.D. Kim, "A Study on Characteristic for a Maximum Utilization Factor of Transformer with Regard to Load Characteristics in General Customers", KIIEE Vol. 23, No. 12, pp. 217-223, 2009.
  4. Y.S. Lee, J.Y Seo, H.S. Shin, S.M Cho, J.C. Kim, "The Study on Estimation of The Transformer Capacity of Housing and Economic Evaluation Using Case Studies", KIIEE Vol. 24, No. 9, pp. 142-149, 2010.
  5. S.D. Kim, Y.P. Wang, "A Study on Characteristics for a Contract Power Conversion Factor and Analysis of a Maximun Utilization Factor of Transformer in General Customers", KIIEE Vol. 22, No. 5, pp. 80-85, 2008.
  6. S.K. Seo, Y.T. Oh, S.D Kim, W.Y. Shin, S.B. Yoo, J. Lee "A Study on the Assessment of Reasonable Transrformer Capacity by Capacity by the Improvement of Diversity Factor", KIIEE Vol. 24, No. 8, pp. 15-20, 2010.
  7. S.K. Seo, S.D Kim, C.D. Na, Y.T Oh "A Study on the Application of Load Capacity by Unit Household and Analysis of Maximum Utilization Factor of Transformer with Respect to Power Consumption Characteristics in the Lease Apartment", KIIEE Vol. 24, No. 2, pp. 127-132, 2010.
  8. Korea Electrical Safety Corporation, www.kesco.or.kr
  9. S.I. Lee, S.M. Bae, G.H. kim, H.J. Jeon, "Analsysis of Power Transformers survey in Domestic", KIEE, conference, 2008.