6533b7ddfe1ef96bd1273e33
RESEARCH PRODUCT
Current and Voltage Behaviour During a Fault in a HV/MV System: Methods and Measurements
Pasquale MontegiglioRoberto NapoliGiovanni ValtortaF. TummolilloM. L. Di SilvestreE. MorozovaGiuseppe PariseA. BarresiE. Riva SanseverinoA. De SimoneLuigi MartiranoRiccardo TommasiniPietro ColellaEnrico PonsFrancesco TorelliLuigi PariseGaetano ZizzoG. Cafarosubject
Engineeringelectrical and electronic engineeringGlobal earthing systemCurrent distribution; Electrical safety; Global earthing systems; grounding; Power distribution faults; Single line to ground faultHardware_PERFORMANCEANDRELIABILITYFault (power engineering)Fault current limiterElectronic engineeringmedicineGlobal earthing systemscurrent distribution; electrical safety; global earthing systems; grounding; power distribution faults; single line to ground fault; electrical and electronic engineering; energy engineering and power technologyenergy engineering and power technologyCurrent distributionPower distribution faultsElectrical safetySingle line to ground faultElectric shockGroundbusiness.industryElectrical engineeringgroundingSingle linemedicine.diseaseEarthing systemSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaCurrent (fluid)businessPower distribution faultVoltagedescription
When a single line to ground fault happens on the MV side of a HV/MV system, only a small portion of the fault current is injected into the ground by the ground-grid of the faulty substation. In fact the fault current is distributed between grounding electrodes and MV cables sheaths. In systems with isolated neutral or with resonant earthing this may be sufficient to provide safety from electric shock. Experimental measurements were performed on a real MV distribution network: a real single line to ground fault was made and fault currents were measured in the faulty substation and in four neighbouring substations. In this paper the problem of fault current distribution is introduced, the test system is described and the measurements results are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-06-01 |