Title :
Partial discharge inception V-t characteristics for pressurized liquid nitrogen/PPLP® composite insulation system
Author :
Hazeyama, M. ; Hayakawa, N. ; Honjo, S. ; Masuda, T. ; Okubo, H.
Author_Institution :
Nagoya Univ., Japan
Abstract :
We discuss partial discharge (PD) inception characteristics and V-t characteristics of PD inception in liquid nitrogen (LN2)/polypropylene laminated paper (PPLP®) composite insulation system for high temperature superconducting (HTS) cable. Experimental results revealed that the magnitude of initial PD was in the range of 2.0-30 pC irrespective of butt gap condition and the initial PD was generated at the first and third quadrant of the voltage phase independent pressurized condition of LN2. Furthermore, life time indices n of V-t characteristics at PD inception were experimentally identified and the dependency on the pressure of LN2 was clarified.
Keywords :
composite insulating materials; filled polymers; nitrogen; partial discharges; power cable insulation; HTS cable insulation; N2; PD inception; butt gap condition; high temperature superconducting cable; life time indices; partial discharge inception V-t characteristics; polypropylene laminated paper; pressurized liquid nitrogen/PPLP composite insulation system; Atmospheric measurements; Cable insulation; Dielectrics and electrical insulation; Electrodes; High temperature superconductors; Nitrogen; Partial discharges; Power cables; Superconducting cables; Voltage;
Conference_Titel :
Dielectric Liquids, 2002. ICDL 2002. Proceedings of 2002 IEEE 14th International Conference on
Print_ISBN :
0-7803-7350-2
DOI :
10.1109/ICDL.2002.1022710
