Search results for " electrical insulation"

showing 3 items of 3 documents

A digital device for the diagnosis of insulation systems

2004

A complete innovative measurement system (D2SI - device for the diagnosis of insulation systems) for both acquisition, analysis and processing of partial discharge signals generated in insulation systems under voltage stress (IEC standard), was designed and realized; several measurements on practical insulation systems demonstrated the full and correct equipment operation.

Stress (mechanics)EngineeringDigital devicebusiness.industrySystem of measurementPartial dischargeElectrical engineeringDielectrics and electrical insulation Partial discharge measurement Stress measurement Signal analysis Partial discharges Signal processing Signal generators Voltage IEC standards Signal designIec standardsbusinessVoltageThe 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2004. LEOS 2004.
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Simplified Hybrid PD Model in Voids

2011

In this paper a novel approach to model partial discharges (PD) activity taking place inside a spherical void in epoxy resin system has been traced. The approach is based on a time varying conductance of the inner void, subjected to multistress conditions: voltage, temperature and pressure. A simple lumped circuit macro-model simulates the global effects of PD activity: the different parameters influencing the discharge phenomenon in the void are taking into account by using a physical approach resulting in a time varying conductance inside the circuit. The evaluated PD activity has been compared with experimental and simulated one for the accessible and inaccessible part of the system. A d…

Void (astronomy)Engineeringbusiness.industryPhysical approachConductanceProbability density functionMechanicsEpoxyPD model Partial discharge (PD) Weibull function electrical insulation probability function voidSettore ING-IND/31 - ElettrotecnicaTemperature and pressurevisual_artElectronic engineeringvisual_art.visual_art_mediumbusinessVoltageWeibull distribution
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Simplified hybrid PD model in voids: Pattern validation

2013

The purpose of the present work is to show the validation of a new model to simulate the physical phenomenon of partial discharge (PD) produced in air voids inside insulating epoxy resin. The model has been developed on the basis of a new approach that combines the known circuit model of three capacitors with a model used to describe the behavior of the ionized channel inside of the inclusion during the discharge phenomenon, short-circuiting the capacity that represents the void. The approach is based on time-variable conductance of the void, subjected to multistress conditions: voltage, temperature and pressure. The new approach has been developed from a time variable conductivity model us…

Void (astronomy)Materials sciencePartial discharge (PD) void PD model electrical insulation Weibull function probability functionProbability density functionMechanicsDielectricSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConductivityCapacitancelaw.inventionSettore ING-IND/31 - ElettrotecnicaCapacitorlawPartial dischargeElectronic engineeringVoltage4th International Conference on Power Engineering, Energy and Electrical Drives
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