Results 111 to 120 of about 10,554 (149)

Modeling of partial discharge (PD) for solid insulation with void and building a hardware setup to measure partial discharge

2016 Biennial International Conference on Power and Energy Systems: Towards Sustainable Energy (PESTSE), 2016
In high voltage (HV) electrical power systems; varieties of materials (solid, liquid and gaseous) are used for insulation purpose to protect the early failure in High Voltage power equipment. Most of insulating materials are not perfect in all respect and contain some impurities.
Devendra Gowda, null Anandraj
openaire   +1 more source

Partial discharge. IX. PD in gas-insulated substations-fundamental considerations

IEEE Electrical Insulation Magazine, 1991
For pt.VIII see ibid., vol.7, no.5, p.9 et seq. (1991). The physical aspects of partial discharge (PD) in SF/sub 6/ gas-insulated substations (GIS) are reviewed. The orientation is toward present and developing techniques for evaluating defects in solid and gaseous insulation systems on the basis of PD measurement.
R. Baumgartner, B. Fruth, W. Lanz, K. Pettersson   +3 more
openaire   +1 more source

The correlation between partial discharges (PD) and gassing in insulating liquids

10th International Conference on Conduction and Breakdown in Dielectric Liquids, 2002
The authors report on investigations performed to determine the relationship between PD parameters and the dissolved gas generated by partial discharges in mineral-based oil. The PD activity of mineral-based oil is shown to depend upon many parameters, including the influence of the standing time between the filling of the test vessel and the switching
H. Borsi, U. Schroder
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Partial discharges in HV machines; initial considerations for a PD specification

IEE Proceedings A Science, Measurement and Technology, 1993
Partial discharge (PD) specifications exist for all types of electrical equipment except motors and generators. Whereas specifications essentially require that the equipment is discharge-free the stator conductor bar insulation of the motors and generators under consideration is micaceous and has excellent PD resistance.
J.W. Wood, H.G. Sedding, W.K. Hogg, I.J. Kemp, H. Zhu   +4 more
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Partial discharge (PD) measuring techniques

15th IET International School on High Voltage Engineering and Testing 2008, 2008
The physical background of partial discharges will be explained on simple models. The requirements on the complete partial discharge measuring systems including the calibration and evaluation of the measuring results will be discussed and examples of partial discharge measurements on transformers in the laboratory and on site will be presented. Finally
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Partial discharge. III. Cavity-induced PD in solid dielectrics

IEEE Electrical Insulation Magazine, 1990
For pt.II see ibid., vol.6, no.5, p.35 et seq. (1990). The question of how to relate the magnitude of the measured, effective, partial discharge (PD) to the size, shape, and position of the cavity within a solid dielectric system is addressed. The causes of cavities are examined, and a brief review of gas breakdown is given. It is then shown that for a
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Partial discharge. IV. Commercial PD testing

IEEE Electrical Insulation Magazine, 1991
For pt.III see ibid., vol.6, no.6, p.11 et seq. (1990). Commercially available partial discharge (PD) detectors are described, along with their important characteristics. The primary characteristics that detectors have in common and that are used as a basis for classification are the number of inputs used, the bandwidth of the detector, and the method ...
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Partial discharge. X. PD in gas-insulated substations-measurement and practical considerations

IEEE Electrical Insulation Magazine, 1992
For pt.IX see ibid., vol.7, no.6, p.5 et seq. (1991). An overview of engineering practice related to partial discharge (PD) measurements in gas-insulated substations (GISs) is provided. The following questions are addressed: why measure PD in GIS?; in which phases of the life cycle should PD be measured?; what PD measurements are presently available ...
R. Baumgartner, B. Fruth, W. Lanz, K. Pettersson   +3 more
openaire   +1 more source

Development of automatic identification method for GIS PD (Partial Discharge) defects diagnosis

2007 IEEE Lausanne Power Tech, 2007
In this paper, an overview of a new GIS (gas insulated switchgear) PD (partial discharge) diagnostic algorithm for both single-defects and multi-defects in HiPDS-G (Hyundai intelligent preventive diagnostic system for GIS) developed by HHI(Hyundai Heavy Industries Co., Ltd) is given.
Young Chan Choi, Seung Wan Jung, Soo Nam Kim, Seong Il Kim, Joong Lok Kwon   +4 more
openaire   +1 more source

Calibrating the UHF technique of partial discharge detection using a PD simulator

IEEE Transactions on Dielectrics and Electrical Insulation, 1995
The paper describes a technique for simulating the presence of partial discharges in gas-insulated substation (GIS) equipment. The technique employs a pulse generator to inject current pulses through a suitable protrusion. The current pulses have similar temporal characteristics to those produced by an actual discharge event, with the added advantage ...
A.G. Sellars, S.J. MacGregor, O. Farish
openaire   +1 more source