Marine redundancy auxiliary system and control method thereof

Abstract

The invention discloses a marine redundancy auxiliary system which comprises a power station, and the power station is connected to a first direct-current bus through a working contactor and a high-speed fuse in sequence, and is successively connected with a daily auxiliary inverter, a sine-wave filter, a overcurrent protection circuit breaker , and an isolation transformer; an outlet of the isolation transformer is divided into two paths, one path is connected to a 380V busbar through a pre-magnetizing contactor, and the other path is connected to a 380V busbar through a working circuit breaker and a working contactor; the 380V busbar is connected with a 380V auxiliary load; the 380V busbar is connected with a 220V busbar through the overcurrent protection circuit breaker and a daily transformer, and the 220V busbar is connected with a 220V auxiliary load. The first direct-current bus is connected with a second direct-current bus through a bus section switch, and components the same as those on the first direct-current bus are arranged between the first direct-current bus and the 380V busbar. According to the marine redundancy auxiliary system, a redundant auxiliary power supply problem of a power storage battery power station is solved, and power loss of a whole ship is prevented; and the consistency of the total working time of two sets of auxiliary systems and sudden switching of the transformer are ensured.

Description

technical field [0001] The invention belongs to the field of ships, and in particular relates to a ship redundant auxiliary system and a control method thereof. Background technique [0002] Future ships are characterized by electrification, automation, intelligence and green energy saving. The characteristics of new energy ships, especially battery-powered ships, are more in line with the development direction of future ships. [0003] Auxiliary systems of a ship are subsystems necessary for the normal operation of the ship. Auxiliary systems are usually cold backup and partitioned to reduce the complexity of the entire ship's electrical system. The auxiliary systems of conventional ships include pumping systems such as fans and water pumps, as well as daily life systems such as lighting and air conditioning; at the same time, the control system of ships is usually a redundant power supply system, and the auxiliary system power supply is one of the redundant power supply ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a redundant auxiliary system for ships and its control method to solve three problems, (1) to solve the redundant auxiliary power supply problem of power battery power station, when one group of auxiliary systems fails, the other group The normal auxiliary system can be put into operation automatically to prevent the whole ship from losing power

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