High-voltage frequency conversion marine shore power system

Abstract

The invention discloses a high-voltage frequency conversion marine shore power system. The system consists of a high-voltage frequency conversion power supply device, a high-voltage shore power connection box, a high-voltage cable drum and a shipborne transformer substation, wherein a first marine distribution bus is arranged between the high-voltage cable drum and the shipborne transformer substation; a second marine distribution bus is further arranged at one end of the shipborne transformer substation; a wharf apron harbor district power substation is used for supplying power for the high-voltage frequency conversion power supply device; the high-voltage frequency conversion power supply device outputs a power supply through voltage transformation and frequency conversion treatment of the power supply of a power grid; cables are laid into the high-voltage shore power connection box by utilizing a cable chute and a conveying trestle bridge; in the transmission process, the power supply is conveyed to the first marine distribution bus or the second marine distribution bus; after the system is adopted, the high-voltage frequency conversion power supply device outputs the 6.6kV / 60Hz or 6kV / 50Hz power supply after the voltage transformation and frequency conversion treatment of the 10kV / 50Hz power supply of the power grid in the harbor berth period, and through the power supply of the power grid of a harbor, the harbor provides the voltage, frequency, power and the like of a shore power supply so as to meet all electric power facility electricity demands required after harbor berth.

Description

technical field [0001] The invention relates to a ship shore power supply system, in particular to a high-voltage frequency conversion ship shore power system used for stopping the use of ship generators and switching to port power grid power supply during the ship berth. Background technique [0002] At present, in recent years, the pace of port construction is getting faster and faster, the number and density of ships berthing at the dock have increased significantly, and fuel consumption has caused a large amount of exhaust gas and particulate matter emissions. Generally, a medium-sized container ship discharges pollutants equivalent to 50 The daily discharge of 10,000 National IV heavy-duty trucks seriously pollutes the environment. [0003] In addition, many foreign developed countries have promoted ship shore power technology, but the port power grid directly supplies power to the ship power grid at the same frequency. There are also a few ports in China that have trie...

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Problems solved by technology

[0003] In addition, many foreign developed countries have promoted ship shore power technology, but the port power grid directly supplies power to the ship power grid at the same frequency. There are also a few ports in China that have tried shore power construction, but most of the technical solutions are not comprehensive enough, and only a few The project is put into use

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