Search results for "Lightning arrester"

showing 2 items of 2 documents

EMI Analysis in Electrical Drives under Lightning Surge Conditions

2012

In this paper, a complete model of a power drive system including the earth electrodes is proposed to evaluate electromagnetic conducted interference due to lightning pulses. Circuit model of a power drive system is joined with a full-wave approach for the simulation of the time behavior of the grounding system. The proposed model enables to predict the electromagnetic conducted interference generated in the power drive system when lightning conditions involve the earth electrodes.

Conducted electromagnetic interferenceEngineeringbusiness.industryGroundElectromagnetic compatibilityElectrical engineeringElectromagnetic interference (EMI) electromagnetic transients finite-difference time-domain method induction motor drives lightning protection moments method.Condensed Matter PhysicsEarthing systemLightning arresterLightningAtomic and Molecular Physics and OpticsElectromagnetic interferencePhysics::GeophysicsSettore ING-IND/31 - ElettrotecnicaHardware_GENERALPhysics::Plasma PhysicsEMIElectronic engineeringElectrical and Electronic Engineeringbusiness
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Lightning-current distribution in MV grids interconnected earthing systems

2017

The paper presents first investigations results on the effects of lightning stroke on medium voltage (MV) installations' earthing systems, connected together with the metal shields of the MV distribution grid cables. The study enables to evaluate the distribution of the lightning current among interconnected earth electrodes in order to assess if the interconnection, usually done for reducing earth potential rise during an earth fault, can give place to dangerous situations far from the installation hit by the lightning stroke. Two case studies of direct lightning stroke are presented and discussed: two interconnected MV substations of the MV grid; a high voltage/medium voltage (HV/MV) stat…

EngineeringEnvironmental Engineering020209 energyEnergy Engineering and Power TechnologyShields02 engineering and technologyLightning arresterLightningIndustrial and Manufacturing EngineeringEarthing systemSettore MAT/08 - Analisi Numerica0202 electrical engineering electronic engineering information engineeringElectronic engineeringElectrical and Electronic EngineeringInterconnectionBondingEarth potential risebusiness.industryElectrical engineeringGridEarthing systemLightningSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicabusinessGlobal Earthing SystemVoltage2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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