Losses in Power Distribution Transformers

Ketkaew, Chaliew;Philphud, Mana;Sungthong, Tossapol;Rachawong, Wiriya;Kalong, Putchong;Noohawm, Onurai;Rerkpreedapong, Dulpichet

  • Received : 2015.08.10
  • Accepted : 2015.11.20
  • Published : 2015.12.31


The paper presents the estimation of power losses in distribution transformer of Provincial Electricity Authority (PEA) distribution system at Muang district of Suphanburi province in Thailand. Data of 416 power distribution transformers composed of transformer (kVA), load current, no load loss and full load loss which were used for calculating energy losses. It was found that the total energy loss of all transformers is approximately 1,756,380 kWh/year.


Technical losses;Energy losses;Distribution transformer loss


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