Monitoring of Partial Discharges in Cable Insulation and Cable Head Using Acoustic Method

• Autorzy: Ranachowski Zbigniew , Wieczorek Krzysztof , Ranachowski Przemysław , Dębowski Tomasz

Identyfikatory

DOI

10.24425/aoa.2022.141654

• Języki publikacji: EN

Abstrakty

EN

The article presents the application of Acoustic Emission (AE) method for detection and registration of partial discharges (PD) generated in medium voltage (MV) cable isolation and MV cable head. The insulation of the high voltage cable is made of a flexible material whose properties are characterised by a high coefficient of attenuation of the acoustic signals. For this reason, the AE method has not been used so far to detect PD in energetic cables. The subjects of the research were the MV cable and the standard T-type cable head. The cable contained defects which were the source of partial discharges. In case of cable head the PD were provoked by thin grounded electrode which was introduced into connector opening. The results of AE measurements are presented in the form of spectrograms. Acoustic Emission was evoked when the applied voltage level reached the value of 7.5 kV for the cable and 4 kV for the cable head. The authors used the acoustic instrumentation of their own design intended for future field use. Obtaining successful results of partial discharges measurements using the acoustic method in the cable insulation makes an original contribution of the presented work.

Słowa kluczowe

EN

partial discharges; medium voltage insulation; acoustic emission

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2022
• Tom: Vol. 47, No. 2
• Strony: 259--265
• Opis fizyczny: Bibliogr. 19 poz., rys., wykr.

Twórcy

autor

Ranachowski Zbigniew

• Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw, Poland

autor

Wieczorek Krzysztof

• Department of Electrical Engineering Fundamentals Wrocław University of Science and Technology Wrocław, Poland

autor

Ranachowski Przemysław

• Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw, Poland

autor

Dębowski Tomasz

• Institute of Fundamental Technological Research Polish Academy of Sciences Warsaw, Poland

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