Cryogenic power transmission technology: Cryogenic dielectrics
Abstract
Partial discharge characteristics of three-layer polymer samples, impregnated with helium in a wide range of pressure and temperature (0.3-1.5 MPa and 4.2-12 K), are reported. Electrode-adjacent and mid-dielectric butt gaps are investigated. Results of PD measurements conducted on embossed films and on a sample with a shielded butt gap are discussed. Dc dielectric strength measurements on two layers of cellulose paper, impregnated by helium at 1 MPa and 12 K, are reported. Flashover problems, encountered with dc measurements on polymer films, are also summarized. Results of low temperature resistivity measurments made on a conducting paper are given. Experimental plans for the forthcoming and final quarter of the program are presented.
- Publication:
-
Quarterly Report
- Pub Date:
- December 1976
- Bibcode:
- 1976ornl.reptR.....
- Keywords:
-
- Cryogenics;
- Dielectrics;
- Power Lines;
- Superconducting Power Transmission;
- Cellulose;
- Cryogenic Fluids;
- Electrical Resistivity;
- Flashover;
- Low Temperature Tests;
- Plastic Tapes;
- Engineering (General)