Testing and modelling hollow-core composite station post insulators under short-circuit conditions

Author

Chisholm, W.A. ; Kuffel, J. ; Ng, Boon Poh ; de Tourreil, C.

Volume

1

fYear

2003

fDate

13-17 July 2003

Abstract

Hollow-core composite 230-kV station post insulators have been tested with single-phase short-circuit currents, simulating levels up to 85 kA rms-symmetric current (worst-case offset for an outer phase) in a three- phase system. Acoustic emission measurements indicated that these non-ceramic insulators (NCI) were not damaged by the short-circuit tests. Finite-element modelling of the insulator-bus system provided a good description of the tests. The finite-element modelling was used to calibrate a simpler model for station design, similar to the models upon which the ANSI/IEEE Standard 605 [ANSI/IEEE, 1984] and the IEC Standard 865 [IEC Standard, 1986; The Mechanical Effects of Short-Circuit Currents, 1996] are based.

Keywords

composite insulators; finite element analysis; insulator testing; short-circuit currents; 230 kV; 85 kA; acoustic emission measurements; finite-element modelling; hollow-core composite station post insulators; insulator-bus system; nonceramic insulators; short-circuit conditions; single-phase short-circuit currents; Acoustic emission; Acoustic testing; Cables; Capacitive sensors; Frequency; Insulator testing; Porcelain; Power transformer insulation; Samarium; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2003, IEEE

Print_ISBN

0-7803-7989-6

Type

conf

DOI

10.1109/PES.2003.1267170

Filename

1267170