Intelligent environmental protection high-voltage shore power supply system

Abstract

The invention discloses an intelligent environment-friendly high-voltage shore power supply system which is characterized by comprising a high-voltage switch cabinet I, a high-voltage inverter connected with the high-voltage switch cabinet I, a high-voltage switch cabinet II connected with an output end of the high-voltage inverter, a high-voltage cable connected with the high-voltage switch cabinet II and ship electric equipment, a voltage transducer II, a frequency meter II and a phase detector II which are connected with the high-voltage inverter by the high-voltage switch cabinet II, a current transducer II connected with the high-voltage inverter by the high-voltage switch cabinet II, a second DSP (Digital Signal Processor) connected with the voltage transducer II, the frequency meter II, the phase detector II and the current transducer II respectively, and a communication module which is connected with a ship power generator and the second DSP respectively, and used for transmitting an amplitude, frequency and a phase of output voltage, and output current of the ship power generator to the second DSP. The high-voltage shore power supply system can monitor a ship power grid at any time, can control a shore power supply to synchronously run with the system, and is reliable and practical.

Description

Technical field [0001] The invention relates to an intelligent environmental protection high-voltage shore power supply system. Background technique [0002] In recent years, due to the rapid development of the national economy, the port business has become increasingly busy, and the number and density of ships calling at piers has doubled. Because existing ships usually use fuel oil products such as heavy oil and diesel to generate electricity, they can meet the needs of ships after berthing and docking. The electricity demand of the ship’s power supply system generally requires a large amount of fuel oil to provide electricity to the ship, forming a port chimney group, causing huge pollution to the port environment; and there is a certain amount of noise pollution when the ship’s generator is working; in addition, the ship’s generator The efficiency is low, so during the berthing period, if power can be supplied through the port, it can effectively reduce the cost, and is benef...

AI Technical Summary

Problems solved by technology

[0002] In recent years, due to the rapid development of the national economy, the port business has become increasingly busy, and the number and density of ships calling at the docks have increased exponentially. Because existing ships usually use fuel products such as heavy oil, diesel, etc. The electricity demand of the power supply system on board generally requires a large amount of fuel oil to provide electricity to the ship, forming a group of port chimneys, which has caused huge pollution to the port environment; and there is a certain amount of noise pollution when the ship's generator is working; in addition, the ship's generator The efficiency is low, so during the berthing period, if the power supply can be provided through the port, the cost can be effectively reduced, and it is beneficial to the maintenance of the ship's power generation equipment. At the same time, because the frequency of the foreign ship power grid is mostly 60Hz, a small part of the ship power grid frequency is 50Hz

The frequency of my country's port power grid is 50Hz, and ships with different power grid frequencies may berth at the port at the same time. However, the current shore power technology solution cannot supply power to multiple ships at the same time, nor can it provide 50Hz and 60Hz power at the same time, which hinders port shore power. For the development and promotion of the system, it is of great practical significance and practical value to study the simultaneous power supply technology for 60Hz ships and 50Hz ships in the port power grid; in addition, the existing shore power supply generally adopts: input filter + frequency converter + output transformer + sine The device configuration form of the filter can be seen that in order to avoid the interference of the harmonics generated by the ordinary frequency converter on the ship's electrical equipment and the ship's power grid, it is necessary to configure filters at the input and output ends of the shore power supply, the structure is complex, High cost and inconvenient maintenance

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