This paper addresses the ground faults protection issues in the closed-loop operation of MV industrial power systems, analyzing how neutral grounding status can affect the protection system operation. In particular, besides the widely established practice in industrial plants (i.e. low-resistance grounding), in this paper an alternative neutral grounding solution is proposed, which consists in the operation with compensated neutral (Petersen coil-resistor combination). The implementation of pilot relaying schemes (PRS); supporting zero-sequence wattmetric directional relays, is evaluated in order to ensure selectivity of protection systems and improve fault clearance times.
Electrical Safety in MV Industrial Power Systems: An Innovative Solution with Compensated Neutral / Ciniello, V., Loggia, R., Martirano, L., Lauria, S.. - (2025), pp. 1-7. (2025 IEEE International Conference on Environment and Electrical Engineering and 2025 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2025 grc ) [10.1109/eeeic/icpseurope64998.2025.11169140].
Electrical Safety in MV Industrial Power Systems: An Innovative Solution with Compensated Neutral
Ciniello, Vincenzo;Loggia, Riccardo;Martirano, Luigi;Lauria, Stefano
2025
Abstract
This paper addresses the ground faults protection issues in the closed-loop operation of MV industrial power systems, analyzing how neutral grounding status can affect the protection system operation. In particular, besides the widely established practice in industrial plants (i.e. low-resistance grounding), in this paper an alternative neutral grounding solution is proposed, which consists in the operation with compensated neutral (Petersen coil-resistor combination). The implementation of pilot relaying schemes (PRS); supporting zero-sequence wattmetric directional relays, is evaluated in order to ensure selectivity of protection systems and improve fault clearance times.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
