An Evaluation of Amorphous Transformer using Load Curve Pattern Model for Pole Transformer

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  • Takagi Msaaki
    Department of Electrical Engineering, School of Engineering, The University of Tokyo
  • Yamamoto Hiromi
    Department of Advanced Energy, Graduate School of Frontier Sciences, The University of Tokyo
  • Yamaji Kenji
    Department of Electrical Engineering, School of Engineering, The University of Tokyo

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  • 柱上変圧器負荷パターン作成モデルを用いたアモルファス変圧器の評価
  • チュウジョウ ヘンアツキ フカ パターン サクセイ モデル オ モチイタ アモルファス ヘンアツキ ノ ヒョウカ

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Abstract

Energy loss in transformer is composed of no load loss and load loss. No load loss of amorphous transformer (i.e. amorphous metal-based transformer) could be reduced by about 70% compared with traditional transformers (e.g. silicon steel-based transformer). If amorphous transformers are adopted to pole transformers owned by electric companies, large amount of energy savings and reduction of CO2 could be realized. However, amorphous transformers have disadvantages of high initial cost and high load loss parameters compared with traditional transformers.<br>Economies of pole transformers are evaluated in the paper by the sum of the initial cost and the power loss cost, that is calculated by the load curve pattern of pole transformers. Authors propose a load curve pattern model for pole transformers and analyze the effects in cases which amorphous transformers are adopted to pole transformers.<br>Simulation results show that most of the losses in pole transformers are no load loss, and amorphous transformer is effective in achieving substantial energy savings as well as environmental benefits.

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