Simultaneous measurement of partial discharges using IEC60270 and radio-frequency techniques

Alistair Reid, Martin D. Judd, Richard A. Fouracre, Brian Stewart, Donald Hepburn

    Research output: Contribution to journalArticle

    Abstract

    Partial discharge (PD) measurement is an established condition monitoring technique used to facilitate the detection of incipient faults in high voltage electrical insulation systems such as gas-insulated switchgear and power transformers. By simultaneously recording partial discharge using both the IEC60270 'apparent charge' measurement technique and the more recent Radio Frequency method, which measures the energy radiated from the discharge, it is thought that more information can be gained about the nature of the PD source. Combined measurement has been carried out on various common PD source topologies recreated under laboratory conditions using PD test cells in a range of insulating media including SF6, oil and epoxy resin. Test cell geometries include floating electrodes, free particles and protrusions. By plotting apparent charge against the energy of the RF signal for a large number of PD pulses, the relationship between the two techniques can be quantified for a given test configuration.
    Original languageEnglish
    Pages (from-to)444-455
    Number of pages12
    JournalIEEE Transactions on Dielectrics and Electrical Insulation
    Volume18
    Issue number2
    DOIs
    Publication statusPublished - Apr 2011

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    Keywords

    • electrical engineering
    • partial discharge measurement
    • high voltage
    • electrical insulation

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