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/mediumvoltage (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.
|Data di pubblicazione:||2008|
|Titolo:||A method to evaluate voltages to earth during an earth fault on a HV network in a system of interconnected earth electrodes of MV/lv substations|
|Autori:||CAMPOCCIA, A; MINEO, L; ZIZZO, G|
|Tipologia:||Articolo su rivista|
|Citazione:||CAMPOCCIA, A., MINEO, L., & ZIZZO, G. (2008). A method to evaluate voltages to earth during an earth fault on a HV network in a system of interconnected earth electrodes of MV/lv substations. IEEE TRANSACTIONS ON POWER DELIVERY, 23, n°4, 1763-1772.|
|Digital Object Identifier (DOI):||10.1109/TPWRD.2007.915905|
|Appare nelle tipologie:||01 - Articolo su rivista|