Marine low-voltage ring network distribution system

Abstract

The invention relates to a marine low-voltage ring network distribution system. Four main buses connected to equipment loads are connected in an end-to-end way to form the ring network distribution system; each main bus is connected with a generator, a connection switch and a high-resistance grounding device are connected between every two main buses, and each connection switch is provided with adirection protective device; and an arc light protector is connected between each main bus and the corresponding load. A high-resistance grounding technology is applied to minimize the risk of a short-circuit fault of the system; differential and directive area protection technologies of the line are used, so that any area with a short circuit fault in the system can be isolated rapidly, and a fault area is minimized; an arc monitoring technology is used to realize equipment and personnel protection; and redundant arrangement of a distributing board and redundant segment between busbars are used to realize redundancy of the power system.

Description

technical field [0001] The invention relates to a ship low-voltage ring network power distribution system in a ship power system. Background technique [0002] With the continuous development of the ship's electric propulsion system, the requirements for the ship's power station are getting higher and higher. The continuity and reliability of power supply have become one of the important indicators to measure the vitality of the ship's power system. However, the working environment of the ship's power system is harsh, such as temperature , humidity, salt spray, mold, etc., make the insulation of the ship's power system continue to stand the test; once the electrical equipment or cables on board have insulation failures, short circuits become one of the most common electrical faults during the operation of the power station; A feeder is directly led out from the main switchboard and is independent. It only supplies power to one distribution board or one electrical device; its...

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Problems solved by technology

[0002] With the continuous development of the ship's electric propulsion system, the requirements for the ship's power station are getting higher and higher. The continuity and reliability of power supply have become one of the important indicators to measure the vitality of the ship's power system. However, the working environment of the ship's power system is harsh, such as temperature , humidity, salt spray, mold, etc., make the insulation of the ship's power system continue to stand the test; once the electrical equipment or cables on board have insulation failures, short circuits become one of the most common electrical faults during the operation of the power station; A feeder is directly led out from the main switchboard and is independent. It only supplies power to one distribution board or one electrical device; its main feature is that once the feeder line fails, the electrical equipment on the road will Or the power distribution board will be cut off, the power supply reliability is poor, continuous and uninterrupted power supply cannot be realized, and the safety factor is low

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