Single-Phase Earth-Fault Protection of Power Cable of a Salt-Producing Floating Platform

Aleksandr Novozhilov, Zhanat Issabekov (), Timofey Novozhilov, Bibigul Issabekova and Lyazzat Tyulyugenova
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Aleksandr Novozhilov: Faculty of Energy, Department of “Electric Power Engineering”, Toraighyrov University, Building A, Lomov Str., 64, Pavlodar 140008, Kazakhstan
Zhanat Issabekov: Faculty of Energy, Department of “Electric Power Engineering”, Toraighyrov University, Building A, Lomov Str., 64, Pavlodar 140008, Kazakhstan
Timofey Novozhilov: Power Engineering Institute, Department of “Power Supply of Industrial Enterprises”, Omsk State Technical University, Mira Av., 11, Omsk 644050, Russia
Bibigul Issabekova: Faculty of Energy, Department of “Electric Power Engineering”, Toraighyrov University, Building A, Lomov Str., 64, Pavlodar 140008, Kazakhstan
Lyazzat Tyulyugenova: Faculty of Energy, Department of “Electric Power Engineering”, Toraighyrov University, Building A, Lomov Str., 64, Pavlodar 140008, Kazakhstan

Energies, 2025, vol. 18, issue 19, 1-10

Abstract: In this paper, a method to improve the protection of a four-core power cable of a salt-producing floating platform equipped with an automatic breaker with an independent tripping mechanism is suggested. The use of this automatic breaker in combination with a suggested protection device ensures reliable protection of not only the power cables of the platform against all faults but also the personnel of the platform and animals on the reservoir banks against electric shock in the event of a single-phase ground fault in reservoir water. This would be possible due to a voltage sensor made in the form of a metal ring on the power cable and a relay; one terminal of the relay winding is connected to the voltage sensor by a single-core control cable, and the other to the neutral of a power source on the platform. The typically open contacts of this relay are connected to an electric circuit which includes a power source and a coil for an independent tripping mechanism of the automatic breaker. This design ensures reliable operation of the suggested protection device in the event of a single-phase ground fault in the power cable of the platform when underwater cable insulation is damaged.

Keywords: floating platform; four-core cable; neutral; automatic breaker; protection system; voltage sensor; relay (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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