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Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417), 2004
Return voltage measurement (RVM) and low frequency domain spectroscopy (FDS) have been successfully used to assess moisture content of oil/paper insulation. This paper is focused on modeling the dielectric response of transformer insulation with RVM data and FDS data respectively to get a relationship between these two methods and to facilitate a ...
null Shuzhen Xu +3 more
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Return voltage measurement (RVM) and low frequency domain spectroscopy (FDS) have been successfully used to assess moisture content of oil/paper insulation. This paper is focused on modeling the dielectric response of transformer insulation with RVM data and FDS data respectively to get a relationship between these two methods and to facilitate a ...
null Shuzhen Xu +3 more
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The interpretation of return voltage curves of paper-oil-cables
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132), 2002The paper reports on return voltage measurements performed on different 10 kV paper-oil insulated belted-type cables used in network systems with isolated neutral and with effective earthing of the neutral. The different cable design, e.g., the increased thickness of insulation between conductor and sheath for isolated systems, has a strong influence ...
R. Patsch, null Jochen Jung, O. Kouzmine
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Detection of water trees in medium voltage XLPE cables by return voltage measurements
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132), 2002Several methods are proposed in literature to characterize the state of deterioration of water-treed cable insulation. One of these methods is the return voltage measurement (RVM) method, which was initially introduced as a diagnostic method for oil-paper insulating systems.
B. Jonuz +4 more
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Mechanism of assessing moisture in transformer insulation by return voltage method
2011 Second International Conference on Mechanic Automation and Control Engineering, 2011Water of oil paper insulation in transformer will accelerate its insulation ageing, which is the key factor for its failures. Therefore, it is necessary to estimate water content of solid insulation for guaranteeing a safety and reliable operation of power transformers.
null Tao Zhang +2 more
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Return voltage-a reliable diagnosis for water treed cables?
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319), 2003To characterize the state of deterioration of water treed cable insulation different methods are in use. The problems with all diagnostic tools are firstly the sensitivity and secondly the lack of selectivity. Except for very severely deteriorated cables, the commonly used signals like loss tangent or depolarization currents are not able to detect ...
J. Jung, R. Patsch, D. Kamenka
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Application of Return Voltage Measurement for Space Charge Detection and Measurement in LDPE
2020 IEEE Applied Signal Processing Conference (ASPCON), 2020The phenomenon of return voltage build-up in dielectric materials has been explained from the concept of space charge accumulation. Return voltage build-up was observed in thin low density polyethylene samples after they were charged and discharged for specific intervals.
Nasirul Haque
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Correlation between return voltage and relaxation current measurements on XLPE medium voltage cables
11th International Symposium on High-Voltage Engineering (ISH 99), 1999The 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.
G. Hoff, H. Kranz
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Return voltage measurements on metal oxide surge arresters
11th International Symposium on High-Voltage Engineering (ISH 99), 1999A number of diagnostics are currently available to monitor the condition of metal oxide surge arresters. Very often a number of these diagnostics do not provide meaningful interpretation about the condition of arresters. The authors have experienced one such anomaly during their involvement with multipulse operating duty tests on distribution type ...
T. Saha, T. Dinh
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p-factor, a meaningful parameter for the evaluation of return voltage measurements
Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2003The paper aims at a better understanding of the results of return voltage measurements of electric equipment whose insulation consists of two or more different dielectric materials, like in electric power equipment where often paper-oil insulations are used.
R. Patsch, O. Kouzmine
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Modelling return voltage measurements of multi-layer insulation systems
Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM), 2002The purpose of this paper is to analyse voltage return measurements starting from a theoretical analysis of a series combination of several dielectric materials. Each material is characterised by its conductivity, permittivity and dielectric response function.
U. Gafvert, E. Ildstad
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