Ship alternative-current zone power distribution network system and reliability analysis method thereof

Abstract

The invention discloses a ship alternative-current zone power distribution network system and a reliability analysis method thereof. The system is characterized in that an entire ship is divided into multiple zones, wherein the power supply of loads in one or more zones is guaranteed by one power generator unit, each power generator unit consists of a power generator, a power distribution panel, a circuit breaker and a load, an electric power bus passes through a watertight cabin from two sides of a cabin so as to join four power generators on the head and the end of the ship, and finally a circular power supply network is formed. The method comprises steps of drawing a corresponding reliability diagram according to a structure of the power distribution network; performing equivalence for local relatively-independent structures in serial connection or in parallel connection, and simplifying the reliability diagram; establishing different connection matrixes between one load point j and different power supplies; obtaining a minimal route according to the connection matrix so as to obtain a minimal cut set; eliminating the influence of a shared device on the calculation result by utilizing a session description protocol (SDP) method; and calculating a reliability parameter of the load point and a systematic reliability parameter.

Description

technical field [0001] The invention belongs to the field of ship engineering, and relates to a structural design of a ship's regional power distribution network and a reliability analysis method thereof. Background technique [0002] The power system composed of radial power distribution system and AC motor is the mainstream of the ship's power system at present. The load of the power system is fed by cables from a few centralized power distribution centers on the ship, which causes dozens of cables on board the ship. The penetration of various parts, especially a large number of cabin-penetrating cables is not only difficult to arrange, but also causes the opening sealing problem of the ship's pressure bulkhead. With the increasing capacity of the ship's power system, centralized power distribution has gradually become a very prominent problem in ship design and construction costs, and local electrical isolation has become very difficult; at the same time, it is also diffi...

AI Technical Summary

Problems solved by technology

However, the AC regional power distribution network structure is a relatively complex network structure. Designing a good AC regional power distribution network structure requires the ability to ensure multi-channel power supply and operational flexibility for important loads from the system structure, and improve system operation from the management point of view. Efficiency and critical load power supply duration, from the protection to limit the fault to a minimum

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