Abstract
The expansion of medium-voltage networks by cable lines, or changes in the earth fault location method or changes of the neutral point treatment increasingly lead to rising earth fault currents and earth potential rises (EPR) at the fault location.
Based on the inductively coupled conductor loops model according to Carson and Pollaczek, in a first step, the fault current distribution and the potential distribution are determined in a simplified analytical way. In a second step, the results are compared to an extended independent modelling and, with this, further in-depth analyses are performed. As a result, the decisive influencing factors for the current and potential conditions in connected (global) earthing systems and their practical significance in the event of a single-pole fault are derived
Based on the inductively coupled conductor loops model according to Carson and Pollaczek, in a first step, the fault current distribution and the potential distribution are determined in a simplified analytical way. In a second step, the results are compared to an extended independent modelling and, with this, further in-depth analyses are performed. As a result, the decisive influencing factors for the current and potential conditions in connected (global) earthing systems and their practical significance in the event of a single-pole fault are derived
| Translated title of the contribution | Global grounding systems: determination of the earth potential rise (EPR) in medium voltage cable networks in the event of a single pole faul |
|---|---|
| Original language | German |
| Pages (from-to) | 39-45 |
| Journal | Elektrotechnik und Informationstechnik |
| Volume | 136 |
| DOIs | |
| Publication status | Published - 6 Feb 2019 |