@article{oai:nagoya.repo.nii.ac.jp:00005259,
 author = {Hayakawa, N. and Kobayashi, T. and Hazeyama, M. and Takahashi, T. and Yasuda, K. and Okubo, H.},
 issue = {1},
 journal = {IEEE Transactions on Dielectrics and Electrical Insulation [see also IEEE Transactions on Electrical Insulation]},
 month = {Feb},
 note = {Partial discharge (PD) inception characteristics of liquid nitrogen (LN_2)/ polypropylene (PP) laminated paper composite insulation system for high temparature superconducting (HTS) cables were investigated in terms of the volume effect and the V-t characteristics. The electrical and optional measurements of PD inception characteristics showed that initial PD could be generated between PP laminated paper layers, as well as in a butt gap. Using a parameter called satistically stressed liquid volume (SSLV) based on the discharge probability in both butt gaps and LN_2 filled thin layers between PP laminated papers, we could systematically analyze and evaluate the volume effect on PD inception stress (PDIE). Furthermore, experimental results revealed that n values of V-t characteristics at PD inception were as high as 80-110. On the other hand, the lower n values obtained at breakdown were interpreted by the intensified PD development in thermal bubbles generated after the PD inception.},
 pages = {166--174},
 title = {Partial discharge inception characteristics of LN/sub 2//polypropylene laminated paper composite insulation system for high temperature superconducting cables},
 volume = {12},
 year = {2005}
}