Development of technology for the manufacture of crosslinked polyethylene insulated cables rated 138 through 345 kV
- 1 November 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. 96 (6), 1741-1753
- https://doi.org/10.1109/T-PAS.1977.32506
Abstract
This paper presents the results of an investigation to develop the technology required to manufacture chemically crosslinked polyethylene insulated power cables in the voltage range 138 to 345 kV, and having insulation thicknesses approximately equal to oil-impregnated paper insulated cables. Background studies are presented using miniature cable models to demonstrate the effect on voltage breakdown strength of irregularities at the conductor shield, contaminants in the insulation, and of type of insulation. A pilot extrusion line which incorporates the new technology for extrusion of full-size cables rated 138-345 kV is described. Data taken on full-size model cables, having 230 mils (5.8 mm) insulation thickness, manufactured on this pilot line are presented which demonstrate short time voltage breakdown average stresses in excess of 800 v/mil (32 kV/mm). This indicates that the technology appears feasible for manufacture of crosslinked polyethylene insulated cables rated 138, 230 and 345 kV, having insulation thicknesses of 500 mils (12.7 mm), 760 mils (19.3 mm) and 1050 mils (26.7 mm), respectively.Keywords
This publication has 11 references indexed in Scilit:
- High voltage cables with extruded insulation?Statistical controls and reliability evaluationIEEE Transactions on Power Apparatus and Systems, 1975
- Insulation properties of cross-linked polyethylene cables cured in inert gasIEEE Transactions on Power Apparatus and Systems, 1975
- Development of EHV Cross-Linked Polyethylene Insulated Power CablesIEEE Transactions on Power Apparatus and Systems, 1973
- Development and Installation of 138-kV Cable for Tests at EEI Waltz Mill Station: Cable 24IEEE Transactions on Power Apparatus and Systems, 1972
- Development and Installation of 138 kV Cable System for Tests at EEI Waltz Mill Station: Cable 21IEEE Transactions on Power Apparatus and Systems, 1972
- Development and Installation of 138 kV Cable for Tests at EEI Waltz Mill Station: Cable 22IEEE Transactions on Power Apparatus and Systems, 1972
- Development and Installation of 138 kV Cable for Tests at EEI Waltz Mill Station: Cable 26IEEE Transactions on Power Apparatus and Systems, 1972
- Design&Development of 138 KV Solid Dielectric Cable for Tests at Waltz Mill StationIEEE Transactions on Power Apparatus and Systems, 1972
- Development and Installation of 138 KV Cable Systems for Tests at EEI Waltz Mill Station: Cable 23IEEE Transactions on Power Apparatus and Systems, 1972
- Very High Tension Cables with Extruded Polyethylene InsulationIEEE Transactions on Power Apparatus and Systems, 1971