柱上変圧器負荷パ夕ーン作成モデルを用いたアモルファス変圧器の評価

摘要

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 CO_2 could be realized. However, amorphous transformers have disadvantages of high initial cost and high load loss parameters compared with traditional transformers.rnEconomies 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.rnSimulation 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.%通常，変圧器の鉄心に用いられるけい素鋼板は原子が周rn期的に配列した結晶構造である。それに対して，アモルファrnス合金は溶融状態から急激に冷却することで作られる非結rn晶の固体である。変圧器の鉄心部分にアモルファス合金をrn使用することで損失電力を低減することが出来る。原子配rn列に規則性がないアモルファス合金では，鉄心に磁束が通rnる際の損失（ヒステリシス損）が少なくなる。また板厚はrnけい素鋼板と比べて約1/10となるので，渦電流損も低減さrnれる。