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Intelligent shore power system and grid connection method

A technology of electric system and power grid, applied in the field of shore power system for intelligent identification of undisturbed switching of ship power grid, which can solve problems such as inapplicability of multiple power systems, transient impact of grid connection, and impact on ship equipment safety, etc., achieving high accuracy , fast response, fast effect

Inactive Publication Date: 2015-03-25
SHENZHEN CLOU DRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the technical problem that the existing shore power cannot be applied to multiple power systems, and the transient impact caused by grid connection affects the safety of ship equipment. The present invention provides an intelligent shore power system. The specific technical solution is as follows:

Method used

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  • Intelligent shore power system and grid connection method
  • Intelligent shore power system and grid connection method
  • Intelligent shore power system and grid connection method

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Effect test

Embodiment 1

[0033] see figure 1 , figure 1 It is a structural block diagram of the intelligent shore power system.

[0034] The invention provides an intelligent shore power system, which includes a variable frequency power supply, a switching network and a reactor, the reactor is a three-phase reactor, and the variable frequency power supply includes a rectifier module, an inverter module, a bus bar, a variable frequency power supply controller, a communication module, power grid sampling module; the rectifier module, busbar, inverter module, variable frequency power supply controller, power grid sampling module, switching network and reactor are connected in sequence, the communication module is connected with the variable frequency power supply controller, and the busbar connected to the variable frequency power supply controller; the power grid sampling module is connected to an external ship power supply cable through a sampling line, and the power grid sampling module obtains the i...

Embodiment 2

[0038] see figure 2 , figure 2 It is a structural block diagram of the intelligent shore power system.

[0039] The invention provides an intelligent shore power system, which includes a variable frequency power supply, a switching network and a reactor. The variable frequency power supply includes a rectifier module, an inverter module, a bus bar, a variable frequency power supply controller, a communication module, and a grid sampling module; the rectifier module , busbar, inverter module, variable frequency power supply controller, grid sampling module, switching network and reactor are connected in sequence, the communication module is connected with the variable frequency power supply controller, and the busbar is connected with the variable frequency power supply controller; A first vacuum contactor is connected between the inverter module and the reactor, the power grid sampling module is connected to an external ship power supply cable through a sampling line, and the...

Embodiment 3

[0052] see image 3 , image 3 It is a structural block diagram of the intelligent shore power system.

[0053] An intelligent shore power system includes a variable frequency power supply, a switching network and a reactor. The variable frequency power supply includes a rectifier module, an inverter module, a bus bar, a variable frequency power supply controller, a communication module, and a grid sampling module; the rectifier module, bus bar, The inverter module, variable frequency power controller, grid sampling module, switching network and reactor are connected in sequence, the communication module is connected to the variable frequency power controller, the bus bar is connected to the variable frequency power controller; the grid sampling The module is connected to an external ship power supply cable through a sampling line, and the power grid sampling module obtains the information of the external ship power grid in real time, and transmits the information of the exte...

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Abstract

The invention relates to an intelligent shore power system which comprises a variable-frequency power source, a switching network and an electric reactor. The variable-frequency power source comprises a rectifying module, an inversion module, a bus, a variable-frequency power source controller, a communication module and a power grid sampling module, wherein the rectifying module, the bus, the inversion module, the variable-frequency power source controller, the power grid sampling module, the switching network and the electric reactor are sequentially connected; the power grid sampling module obtains external ship power grid information in real time and transmits the external ship power grid information to the variable-frequency power source controller, the variable-frequency power source controller controls the switching network to switch power grid systems to be matched with a ship power grid according to the external ship power grid information, and shore power grid information is generated; when the external ship power grid information and the shore power grid information are the same, the variable-frequency power source controller controls the inversion module to be connected with the electric reactor, and after voltage is stabilized, the variable-frequency power source controller controls disconnection of an external marine auxiliary machine and the ship power grid through the communication module.

Description

technical field [0001] The invention relates to a shore power system, in particular to a shore power system for intelligently identifying the non-disturbance switching of a ship power grid. Background technique [0002] When the ship is sailing and docking in the port area, it mainly uses the diesel generator set (auxiliary engine) to generate electricity to meet the ship's electricity demand. The use of the built-in diesel generator set of the ship needs to burn a large amount of ship fuel oil (heavy oil or diesel oil). At the same time as the fuel oil gets electricity, the ship produces pollutant emissions. As the world's largest carbon emitter, China has made a commitment to the world that "by 2020, China's carbon dioxide emissions per unit of GDP will be reduced by 40% to 45% compared with 2005". The Ministry of Transport clearly stated: "Actively promote the use of shore power for ships calling at ports, and strive to build new docks and ships to support the constructi...

Claims

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Application Information

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IPC IPC(8): H02J3/40
CPCH02J3/40
Inventor 张润森刘佳刘鹏张树宏余艳文
Owner SHENZHEN CLOU DRIVE TECH CO LTD
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