Ship shore power connection method and system

An electrical method and electrical system technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of reducing the efficiency of shore power connection of ships, chaotic operation, and inability to uniformly deploy, so as to improve the safety of power supply, improve efficiency, Effect of simplified power supply operation

Active Publication Date: 2018-02-23
GUANGZHOU MARITIME INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The different conditions of the ship often lead to the need to choose between a variety of different power supply methods when connecting to shore power, which is confusing to operate and cannot be deployed uniformly, which greatly reduces the efficiency of shore power connection

Method used

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  • Ship shore power connection method and system
  • Ship shore power connection method and system
  • Ship shore power connection method and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0074] see figure 1 , which is a schematic diagram of a ship-to-shore power system according to Embodiment 1 of the present invention. The ship shore power system of the present invention includes a shore communication module, a judgment module, a central processing module, a first power supply module, a second power supply module, a third power supply module, a fourth power supply module, a detection module and a billing module. The detection module includes a frequency detection module, a voltage detection module, a current detection module and a phase detection module. In this embodiment, the shore power supply can provide the following two power supply standards, 400V / 50Hz and 6.6kV / 60Hz.

[0075]The shore power connection method for ships of the present invention comprises the following steps:

[0076] Step 1: The shore communication module checks whether there is a ship information input requesting to connect to shore power. The ship information includes ship seamless ...

Embodiment 2

[0206] The ship shore power connection method and system in this embodiment are basically the same as in Embodiment 1. The principle of the method based on the voltage difference envelope and the structure of the first power supply module are basically the same as in Embodiment 1. The main difference is that the voltage difference The difference in the structure of the envelope detection device 11 is used to obtain the voltage difference envelope signal of one phase of the ship power and the shore power through the gate of the voltage multiplexer.

[0207] see Figure 14 , which is a circuit diagram of the voltage difference envelope detection device in the second embodiment.

[0208] Specifically, the voltage difference envelope detection device includes a voltage difference acquisition circuit 0111 , an absolute value conversion circuit 0112 and a shaping and detection circuit 0113 . The two input terminals of the voltage difference acquisition circuit 0111 are respectively...

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Abstract

Disclosed is a ship shore power connection method. The ship shore power connection method comprises the following steps of inquiring whether there is ship information input with a shore power connection requirement or not, and if so, executing the following steps; judging whether the ship is equipped with a shipboard transformer for high-voltage boarding or not according to transformer informationon the ship, if so, selecting high-voltage shore power connection, and if not, selecting low-voltage shore power connection; if the low-voltage shore power connection is selected, judging whether theship power distribution standard is consistent to shore power electrical standard or not according to the ship power distribution information, if so, selecting equal-voltage and equal-frequency powersupply, and if not, selecting variable-voltage and variable-frequency power supply; and judging whether the ship has a seamless shore power connection interface or not according to the ship seamlessshore power connection interface information, if so, selecting seamless shore power connection, and if not, selecting shore power connection in a power down manner. By virtue of the method, which modeof the ship is adopted for shore power connection can be accurately judged according to whether the ship is equipped with the shipboard transformer or not, whether the ship is equipped with the selecting seamless shore power connection interface or not, and the ship power distribution standard ship information, thereby greatly improving ship shore power connection efficiency.

Description

technical field [0001] The present invention relates to the technical field of power consumption for ships, in particular to a method and system for connecting ships to shore power. Background technique [0002] Ship shore power technology means that the ship connects to the power grid at the dock side during the berth, and obtains the power required for its water pumps, communications, ventilation, lighting and other facilities from the shore power supply, thereby turning off its own diesel generator. After the ship is connected to the shore power, it can effectively reduce the emission of exhaust gas. It has the remarkable advantages of energy saving and environmental protection. It can reduce the noise pollution generated by the operation of the generator set and reduce the cost. Therefore, the government and its transportation departments, shipping companies, and port companies are vigorously promoting shore power. usage of. [0003] However, most of the shore power sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02M5/42
CPCH02J3/00H02M5/42
Inventor 肖乐明韩佳
Owner GUANGZHOU MARITIME INST
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