AC loss characteristics in monolayer and multi-layer power transmission cables: gap effect

LI Quan （Cambridge 大）；雨宮尚之, 竹内活徳, 中村武恒（京大）；藤原昇（SRL）

Abstract:This paper presents a comprehensive analysis of the influence caused by gaps between tape coated conductors to AC losses of monolayer and multi-layer power transmission cables， which is named gap effect. It is obtained and proved that gap effect significantly influences AC losses of monolayer cables， while hardly influencing the cables with many layers， specifically 6-layer cables. Firstly， the gap effect to cables constructed with different number of layers is discussed. Further more， the variation of AC losses of individual layers in a 6-layer cable is analyzed. Secondly， AC losses of cables with different critical current distributions are calculated. The results are presented and discussed for comparing the influences of critical current and gap effect. The magnetic flux and current distributions are illustrated to assist the analyses.