@article{oai:nagoya.repo.nii.ac.jp:02003092,
 author = {Hayakawa, Naoki and Mori, Yuji and Kojima, Hiroki},
 issue = {1},
 journal = {IEEE Transactions on Dielectrics and Electrical Insulation},
 month = {Jan},
 note = {Liquid nitrogen (LN 2 ) is indispensable as the cooling and electrical insulating materials for high-temperature superconducting (HTS) power apparatus. Especially for the resistive superconducting fault current limiters (RSFCLs), a transient bubble disturbance in LN 2 is generated due to the quench of HTS materials, which may induce an electrical breakdown in LN 2 even under the rated voltage of RSFCL. We have been investigating not only the intrinsic breakdown characteristics of LN 2 under the steady-state operation, but also the dynamic breakdown characteristics of LN 2 under the fault current limiting operation of RSFCL. In this article, we investigate the heat flux and pressure dependence of the quench-induced dynamic breakdown characteristics of LN 2 by using an actual HTS conductor and a pancake coil model for RSFCL. In addition, the dynamic breakdown strength is discussed and systematized in terms of the volume effect of breakdown strength in LN 2 . A flowchart to estimate the intrinsic and dynamic breakdown strength in LN 2 is proposed toward the reliable and rational insulation design of RSFCL.},
 pages = {264--269},
 title = {Volume Effect of Dynamic Breakdown Strength in Liquid Nitrogen Under Transient Bubble Disturbance for Resistive Superconducting Fault Current Limiters},
 volume = {29},
 year = {2022}
}