6533b823fe1ef96bd127f722
RESEARCH PRODUCT
A Method to Evaluate Voltages to Earth During an Earth Fault in an HV Network in a System of Interconnected Earth Electrodes of MV/LV Substations
L. MineoGaetano ZizzoA. Campocciasubject
EngineeringGroundbusiness.industryinterconnected earthing systemElectrical engineeringGESEnergy Engineering and Power TechnologyHigh voltageEarthing systemFault (power engineering)earth faultElectronic engineeringglobal earthing systemElectrical and Electronic EngineeringEarthing global earthing systems power systems faultsbusinessPower-system protectionLow voltageElectrical impedanceVoltagedescription
An easy and swift method to evaluate, in a system of interconnected earth electrodes, earth potentials on earthing systems of medium-voltage/low-voltage (MV/LV) substations, in an event of single-line-to-earth fault inside a high-voltage/medium- voltage (HV/MV) station, is presented. The advantage of the method is the simplicity of the mathematical model for solving complex systems of any size with a sufficient accuracy for practical purposes. This paper shows the results of simulations, performed on networks with different extensions and characteristics, organized in easy-to-read graphs and tables. A comparison of these results with the values obtained according to the procedure explained in the IEC-Standard 60909-3, and a study on the accuracy of the method has been made. Moreover, some considerations on the inclusion of earth electrodes of HV/MV stations within global earthing systems are done.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-10-01 | IEEE Transactions on Power Delivery |