Correlation between return voltage and relaxation current measurements on XLPE medium voltage cables
Correlation between return voltage and relaxation current measurements on XLPE medium voltage cables
- Author(s):
- DOI: 10.1049/cp:19990896
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- Author(s): Source: 11th International Symposium on High-Voltage Engineering (ISH 99), 1999 page ()
- Conference: 11th International Symposium on High-Voltage Engineering (ISH 99)
- DOI: 10.1049/cp:19990896
- ISBN: 0 85296 719 5
- Location: London, UK
- Conference date: 23-27 Aug. 1999
- Format: PDF
The destruction free determination of the ageing status of a polymeric cable insulation is a significant issue for the assessment of remaining life time. The ageing status can be determined by measuring the dielectric properties in time or frequency domain. Because of the nonlinear behaviour of aged polymeric materials, time resolved measurements seem to be more meaningful. In time domain the dielectric properties can be obtained by measuring the relaxation current or the return voltage. Due to the different results and interpretations of those measurements, this paper discusses the comparability of these procedures. Furthermore, influences of electromagnetic disturbances are discussed. (4 pages)
Inspec keywords: power cable testing; power cable insulation; ageing; insulation testing; voltage measurement; XLPE insulation; electric current measurement; nondestructive testing
Subjects: Voltage measurement; Current measurement; Power cables; Organic insulation
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