Title :
Optimization of EP/Al2O3-composites for SF 6 gas insulated power apparatus
Author :
Seifert, J.M. ; Lorenzo, M. Di ; Herden, A. ; Kamer, H.C. ; Schifani, R.
Author_Institution :
Tech. Univ. Braunschweig, Germany
Abstract :
Support insulation in high voltage gas insulated substation (GIS) or gas insulated line (GIL) equipment must fulfill special requirements concerning the insulating, mechanical and environmental properties of the applied composite materials. This paper focuses on the performance reached by applying adhesion technology to increase the microscopic adhesion or bonding strength between Al2O3 filler surfaces and an epoxy matrix. The filler type and the medium filler grain size are varied to find an optimum in the mechanical crack resistance parameters. Besides the well-known mechanical, dielectric and electrical testing methods, a special partial discharge (PD) resistance testing method (Cigre II method) is applied to compare the PD resistivities of the investigated composites
Keywords :
SF6 insulation; adhesion; alumina; composite insulating materials; crack detection; epoxy insulation; gas insulated substations; insulation testing; mechanical testing; partial discharges; Al2O3; Al2O3 filler surfaces; Cigre II method; SF6; SF6 gas insulated power apparatus; adhesion technology; bonding strength; composite materials; dielectric testing; electrical testing; epoxy/Al2O3 composites; gas insulated line equipment; high voltage gas insulated substation; mechanical crack resistance parameters; mechanical testing; medium filler grain size; microscopic adhesion; partial discharge resistance testing method; support insulation; Adhesives; Electric resistance; Gas insulated transmission lines; Gas insulation; Geographic Information Systems; Mechanical factors; Partial discharges; Substations; Testing; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.804643
