CONCEPT STUDIES OF VESSEL ELECTRICAL POWER TRANSMISSION UNIT

Power supply of remote from the main communications objects is a one of the main problem in the Arctic area reclamation. Due to the fact that offline power sources have a limited power value, it is necessary to solve the problem of forced power supply to the high-power consumers (industrial installations, localities, etc.). For this purpose, floating power units based on the nuclear power plant are developed and used. At studying the various mooring systems for a floating power unit, the most appropriate option is single point mooring (SPM) with internal vessel turret system. The system allows fixing a vessel position and providing uninterruptible power supply of consumer through the mooring unit. The main part of the system is electrical energy reception and transmission device. It represents slip-ring contact for connecting cables of object and electrical system of the floating power unit. Creation of ship electrical power system consists of converters and commutation equipment is required for realizing transmission and distribution of electrical energy. The analysis results of electrical energy transmission system options from the floating power unit to the object (consumer) are presented in the paper. The various construction options of the electrical energy reception and transmission device for direct docking with the mooring unit are developed. According to the criteria of reliability, manufacturability, weight and volume, a comparison of transmission system options for voltages levels of 10.5, 35 and 110 kV is made. Parameter of ship’s and underwater transmission lines such us numbers and section of cables as well as power and voltage losses have been estimated. Based on the study results, the possibility and feasibility of using such systems are assessed.

electrical power system, electrical energy transmission, slip-ring contact, floating power unit, single point mooring, electrical energy reception and transmission device, modeling

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