A ship shore power system and control method

A technology for electrical systems and ships, applied in the direction of AC network load balancing, etc., can solve problems such as inability to integrate or share energy from energy storage devices into the grid

Active Publication Date: 2022-03-11
THE PLA NAVY SUBMARINE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventor found that the existing solutions still have at least the following defects: the excess electric energy in the energy storage device cannot be integrated into the grid or shared

Method used

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  • A ship shore power system and control method
  • A ship shore power system and control method
  • A ship shore power system and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like Figure 1~5 As shown, a ship shore power system includes an AC power distribution module 1, a charging and discharging module 2 installed in a container, an energy storage module 3 and a main control module 5, an AC power distribution module 1, a charging and discharging module 2 and an energy storage module 3 are all connected to the main control module 5; the AC power distribution module 1 is connected to the charging and discharging module 2 through an identifiable plug 6, and is used to convert the voltage of the grid into an input voltage; the charging and discharging module 2 includes an inverter 21, The transformer 22 and the energy storage converter 23, the input end of the inverter 21 is connected to the AC power distribution module 1, the output end of the energy storage converter 23 is connected to the energy storage module 3, and the main control module 5 is used to control the charging and discharging module 2; receive the input voltage, and output the...

Embodiment 2

[0046] Different from Embodiment 1: the detector 42 of this embodiment includes a temperature sensor, a smoke detector, a gas flow detector and an oxygen concentration detector, and a temperature sensor, a smoke detector, a gas flow detector and an oxygen concentration detector connected to the control unit. The temperature sensor is used to monitor the environmental changes of the shore power module in real time and convert them into corresponding temperature values. The smoke detector is used to monitor the environmental changes of the shore power modules in real time and convert them into corresponding smoke concentrations. Oxygen is needed in the initial stage of a fire. Combustion, oxygen starts to flow, and the gas flow meter on the top can quickly detect the flow of gas, which is helpful for early detection of fire, fire extinguishing, and reduction of large losses. At the same time, the reduction of oxygen will be detected by the oxygen concentration meter in time. Dis...

Embodiment 3

[0049] The difference from Embodiment 1 is that the identifiable plug 6 of this embodiment includes a male plug and a female plug, an identification chip is provided on the male plug, and an identifier matching the identification chip is provided on the female plug, so that the identification chip of each line and the The identifiers are paired one by one, but the male or female plugs with different identification chips cannot be paired, which helps to reduce the probability of mis-insertion. In addition, the female plug is equipped with a magnetic ring and a movable permanent magnet corresponding to the magnetic ring. When the identification chip and the identifier cooperate, the identification is successful, and the magnetic ring generates magnetism. The magnetism of the magnetic ring is the same as that of the permanent magnet. The space for insertion; the outer side of the male plug and the outer side of the female plug are both covered with a buffer layer to limit shaking;...

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Abstract

The invention discloses a ship shore power system, which comprises an AC power distribution module, a charging and discharging module installed in a container, an energy storage module, a fire protection module and a main control module, and the AC power distribution module, the charging and discharging module and the energy storage module are all connected The main control module; the AC power distribution module is connected to the charging and discharging module through an identifiable plug, which is used to convert the voltage of the grid into an input voltage; the charging and discharging module includes an inverter, a transformer and an energy storage converter connected in sequence. The input end of the converter is connected to the AC power distribution module, the output end of the energy storage converter is connected to the energy storage module, and the main control module is used to control the charging and discharging module according to the remaining power of the energy storage module; receive the input voltage and output the charging voltage , or convert the voltage of the energy storage module into grid-connected voltage, or share the energy storage module with other ships; the invention can integrate or share the excess electric energy of the energy storage module into the grid. In addition, the invention also discloses a control method of the shore power system of the ship.

Description

technical field [0001] The invention belongs to the technical field of power supply equipment, and in particular relates to a ship shore power system and a control method. Background technique [0002] Nowadays, large ships, especially oil tankers and container ships, usually use fuel oil products to generate electricity when they are in port to meet the power demand of ships. In recent years, as fuel oil prices hit new highs repeatedly, the cost of ship power generation continues to rise, and a large amount of sulfide and nitrogen oxides are produced during the combustion of heavy oil, causing serious pollution to the surrounding environment. If the land power grid is used to supply power to ships berthing at the port, firstly, it can greatly reduce the environmental pollution in the port area and build a clean and pleasant green port. Secondly, it can reduce the operating cost of the ship when berthing at the port, increase the power supply income of the port and power gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 孙俊忠周智勇王宗亮张鑫蔡巍孙硕吴言凤
Owner THE PLA NAVY SUBMARINE INST
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