Efficient fault detection, localization, and isolation in MT-HVDC systems based on distance protection and LoRaWAN communication

• DOI: 10.1016/j.egyr.2023.10.083
• Publication Date: 2023-11-04T07:19:22Z
• Authors: Asmaa M. Aboelezz; Abdelfattah A. Eladl; Mohamed T. Abo Am...; Manar H. Elderigi; Mohamed A. Mohamed; Sara W. Aldoadoa; Abdelrahman R. El...; Hana M. Alnegeri; Taher M. Elshreef; Ali A. Eldwany; Mohanad S. Shabka; Bilal Naji Alhasnawi; Bishoy E. Sedhom; Vladimír Bureš
• Keywords: High-voltage direct current; Transient (computer programming); Power-system protection; Isolation

Multiterminal High-Voltage Direct Current (MT-HVDC) systems offer numerous benefits compared to conventional alternating current (AC) power systems, including higher density and improved efficiency. However, the need for adequate protection schemes HVDC remains a significant obstacle their widespread adoption. Much attention has been given developing methods address this. Moreover, of MT-HVDC presents challenge due bidirectional flow, dynamic system characteristics, fault characteristics that cannot be addressed using methods. This paper represents centralized unit based on distance scheme involves two-stage relay process. The first stage detection by measuring voltage obtain impedance, which is then reach point. second identifying location selecting correct faulty zone. technique provides both main backup protection. A central control supports approach presented in this communicate relays update settings. LoRaWAN communication protocol employed, as it more excellent coverage than other standardized technologies can cover long distances. proposed method studied under different scenarios, contingency, simultaneous faults, resistances, locations, types. results provide effectiveness method. cleared within 1.32–1.8 ms.