Return voltage measurements Diagnostic interpretations based on the dielectric time constants

• Autorzy: Patsch R. , Kamenka D. , Menzel J.
• Języki publikacji: EN

Abstrakty

EN

Return voltage measurements of paper-oil insulations such as medium voltage cables have proven to be a reliable method to determine the actual state of degradation and/or the humidity of the insulation. As a first step, the interpretation of the measurements can be done based on the p-factor. This parameter is sensitive to the dielectric properties and especially the humidity of the solid part of the insulation, whereby aged or humid cables show a higher p-factor. The calculation of the dielectric time constants ?1 and ?2 of the two insulating materials oil and cellulose is unique for the return voltage method and hence exceeds the information extractable from other diagnostic methods.

Słowa kluczowe

EN

return voltage; paper-oil insulation; boundary polarization; ageing; Maxwell model; dielectric; time constants

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 4/2
• Strony: 1157--1169
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Patsch R.

autor

Kamenka D.

autor

Menzel J.

• Institute of Materials and Diagnostics in Electrical Engineering University of Siegen, Germany

Bibliografia

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• [3] NÉMETH E., Practical experiences of diagnostic testing of power cable lines by the voltage-response method, IWK '95, Ilmenau, Germany, 1995, 699–708.
• [4] ZAENGL W.S., IEEE EI-Mag., 19, (2003), 5.
• [5] ZAENGL W.S., IEEE EI-Mag., 19, (2003), 9.
• [6] PATSCH R., BERTON F., KOUZMINE O., The Influence of the Ambient Temperature on the Diagnostic Response of Paper-Oil Insulated Cables, APTADM ‘01, Wroclaw, Poland, 2001, 34–37.
• [7] HOUHANESSIAN V.D., Measurement and Analysis of Dielectric Response in Oil-Paper Insulation Systems, PhD-Thesis, ETH Zürich, Switzerland, 1998.
• [8] ALEKSEEV B.A., Elektrichestvo, 2 (959), 58.
• [9] PATSCH R., KOUZMINE O., WSEAS Trans. on Circuits and Systems, 9 (2005), 1191.
• [10] PATSCH R., KOUZMINE O., p-Factor, a Meaningful Parameter for the Evaluation of Return Voltage Measurements, CEIDP ‘02, Cancun, Mexico, 2002, 906–909.
• [11] PATSCH R., KOUZMINE O., The Influence of Climatic Conditions on the Diagnostic Results of Return Voltage Measurements, ISEI'02, Boston, USA, 2002, 191–419.
• [12] PATSCH R., KOUZMINE O., Return Voltage Measurements – a good Tool for the Diagnosis of Paper-Oil-Insulations, IEEE PowerTech, St. Petersburg, Russia, 2005, CD.