Search results for "power system faults"

showing 2 items of 2 documents

Currents Distribution During a Fault in an MV Network: Methods and Measurements

2016

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 neighboring substations. In this paper the problem of fault current distribution is introduced, the tes…

EngineeringDistribution (number theory)020209 energyGlobal earthing system02 engineering and technologyglobal earthing systemsFault (power engineering)Industrial and Manufacturing EngineeringFault current limiter0202 electrical engineering electronic engineering information engineeringmedicineCurrent distributionElectrical and Electronic EngineeringElectrical conductorsingle line to ground faultglobal earthing systems (GESs)Current distribution electrical safety global earthing systems (GESs) grounding power distribution faults power system faults single line to ground fault (SLGF)business.industryGroundElectric shockElectrical engineeringpower system faultsgroundingmedicine.diseaseGridSingle linecurrent distribution; electrical safety; global earthing systems; grounding; power distribution faults; power system faults; single line to ground fault; control and systems engineering; industrial and manufacturing engineering; electrical and electronic engineeringSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaPower system faultControl and Systems Engineeringsingle line to ground fault (SLGF)power distribution faultselectrical safetybusinessCurrent distribution; electrical safety; global earthing systems (GESs); grounding; power distribution faults; power system faults; single line to ground fault (SLGF); Control and Systems Engineering; Industrial and Manufacturing Engineering; Electrical and Electronic EngineeringPower distribution fault
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A New Protection Strategy for Electrical Distribution Systems

2010

In this paper, the authors propose a new protection strategy for electrical Medium Voltage distribution networks, based on a distributed intelligence system composed of a central unit and of many local processing units. The distributed intelligence system can precisely identify and locate faults in suitably limited times. Each local processing unit is composed of a data acquisition system and a data analysis system. The first allows the accurate reconstruction of the fundamental using only 1.5 cycles of under fault transient electrical quantities. The second performs suitably precise on-line fault diagnosis based on the data provided by the data acquisition module. The data acquisition algo…

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaPower Distribution Protection Power System Faults Fault Diagnosis Fault Location Fundamental ExtractionSettore ING-IND/31 - ElettrotecnicaSettore ING-INF/07 - Misure Elettriche E Elettroniche
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