Search results for "sustainable islands"

showing 2 items of 2 documents

Space charge accumulation in undersea HVDC cables as function of heat exchange conditions at the boundaries – water-air interface

2020

Transmission lines with undersea HVDC cables are an interesting technological solution for the supply of electrical energy to islands. The accumulation of space charge inside the dielectric layer of a HVDC cable is one of the most important element to consider in its design and during operation. The formation of space charge is due to various factors including the high dependence on the temperature of the electrical conductivity of the insulation and the establishment of a thermal gradient under load conditions. This research is focused on the space charge accumulation phenomenon around a section of a HVDC cable half dipped in water and half in air. Due to the high difference in thermal con…

010302 applied physicsMaterials science020209 energyElectric potential energy02 engineering and technologyMechanicsThermal conduction01 natural sciencesSpace chargeHVDC cables space charge sustainable islandsSettore ING-IND/31 - ElettrotecnicaTemperature gradientThermal conductivityElectric power transmissionElectric field0103 physical sciencesHeat exchanger0202 electrical engineering electronic engineering information engineering2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)
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Effect of Heat Exchange Transient Conditions with Moving Water-Air Interface on Space Charge Accumulation in Undersea HVdc Cables

2021

The accumulation of space charge inside the dielectric layer of an HVdc cable is one of the most important issue to be considered in the design stage and during the operating conditions. The separation of space charge is due to several factors including the dependence on temperature of the electrical conductivity of the insulation and the establishment of a thermal gradient under load conditions. This article is focused on the investigation of the effect of an axial heat transmission on the space charge and electric field distributions in an HVdc cable. In order to assess the impact of this phenomenon, a case study involving a cable immersed partly in water and partly in air has been simula…

Materials scienceHVdcField (physics)Thermal resistancethermal ratingPEAMechanicsElectrical phenomenaSpace chargeIndustrial and Manufacturing EngineeringCablesSettore ING-IND/31 - ElettrotecnicaContinuity equationControl and Systems EngineeringElectric fieldHeat transferHeat exchangerspace chargeElectrical and Electronic Engineeringsustainable islands
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