Wireless intelligent control shore power connection device for ship

Abstract

The invention discloses a ship wireless intelligent control shore power connection device, and relates to the technical field of ship shore power connection. The device comprises a shore power control cabinet and a handheld ship power controller, and the shore power control cabinet is internally provided with a shore power controller, an isolation transformer, an air switch, a 630A alternating current contactor, a solid-state relay, a fuse, a cable, a plug and the like. Wherein the handheld ship power controller can acquire the reading of a ship load screen digital voltmeter or the reading of a pointer type voltmeter through a camera acquisition device, transmits related voltage data to an intelligent module of the handheld ship power controller through an identification system, and then sends the voltage data to a remote shore power controller through a wireless module and an antenna; according to the method, unnecessary energy consumption is reduced by simplifying the shore power connection process, so that the energy cost is reduced, emission of harmful substances of ship diesel power generation is reduced due to ship shore power connection, environmental protection is facilitated, and fines and treatment cost possibly generated due to excessive emission are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ship shore power connection, and specifically to a ship wireless intelligent control shore power connection device. Background Art

[0002] The rational utilization of energy will better promote future sustainable development. With the development of the economy, China's energy also faces challenges. The document No. 14 issued by the Ministry of Transport and Water Resources of the Chinese government website in 2019 proposed to increase the coordinated promotion of ships using shore power when berthing, and promote the development of green transportation. Increase support and promote the normal use of shore power. At present, most of the shore power connection technologies provided by ports require ships to cut off power to connect to shore power, and cannot connect to shore power seamlessly. The reset of some instruments is troublesome, resulting in ships with short berthing times being reluctant to connect to shore power. Especially for scientific research ships, many instruments and equipment will cause problems such as data loss, unstable measurement data, intelligent out-of-control, and troublesome recovery due to power failure, and the continuity of power supply is more needed. For the convenience, economy and operability of more ships to connect to shore power when berthing.

[0003] In the traditional ship shore power connection method, when berthing, it is necessary to first disconnect the ship generator and then connect to the shore power; when leaving the port, first disconnect the shore power and then connect to the ship power. After the ship's electrical equipment is powered off, the restart and reset are troublesome. The reset of the compass and other equipment takes more than four hours after power failure, affecting the departure; for instruments with special power requirements, data loss and troublesome startup will occur, which is very inconvenient; for some ships with a long distance from the shore, serious voltage drop will occur after loading, and shore control voltage regulation is inconvenient. Although some low-voltage ship controls can connect to shore power seamlessly by wire, and can achieve seamless connection to shore power with high intelligent control, the investment in ships is large and the cost is high. In view of the above problems, the inventor proposes a ship wireless intelligent control shore power connection device to solve the above problems. Summary of the Invention

[0004] In order to solve the problem that although some low-voltage ship controls can connect to shore power seamlessly by wire, can achieve seamless connection to shore power, and have high intelligent control, but the investment in ships is large and the cost is high; the purpose of the present invention is to provide a ship wireless intelligent control shore power connection device.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A ship wireless intelligent control shore power connection device includes a shore power control cabinet and a portable ship power controller. Inside the shore power control cabinet, there are a shore power controller, an isolation transformer, an air switch, a 630A AC contactor, a solid-state relay, a fuse, a cable, a plug, etc.

[0006] Preferably, the portable ship power controller can collect the readings of the digital voltmeter or the pointer voltmeter on the ship load screen through the camera acquisition device, transmit the relevant voltage data to the intelligent module of the portable ship power controller through the recognition system, and then send the voltage data to the shore power controller at a long distance through the wireless module and the antenna. The portable ship power controller includes a touch screen, a wireless module, an antenna and an intelligent module.

[0007] Preferably, the shore power controller internally includes a core module and a corresponding intelligent module.

[0008] Preferably, the core module is a wireless sampling module and an antenna.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] 1. The present invention does not need to disconnect the ship power first and then connect the shore power, realizing seamless grid connection without power interruption, improving the efficiency and safety of the ship connecting to the shore power, reducing the number of equipment start-stop times, and extending the service life of the equipment;

[0011] 2. By simplifying the shore power connection process, the present invention reduces unnecessary energy consumption, thereby reducing energy costs. And the ship connecting to the shore power reduces the emission of harmful substances from ship diesel power generation, which is not only beneficial to environmental protection but also avoids fines and treatment costs that may be generated due to excessive emissions;

[0012] 3. By the ship docking and applying seamless shore power connection, the present invention is economical and practical. It not only improves the power quality but also can save energy, reduce the ship's sewage discharge, and reduce air pollution, which has important significance for the sustainable development of society, economy and ecology;

[0013] 4. The present invention realizes convenient shore power connection after the ship docks through a wireless intelligent control method, with low cost, energy-saving and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of the process structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the control cabinet of the present invention.

[0017] Figure 3 It is a schematic diagram of the wiring principle structure of the control cabinet of the present invention.

[0018] Figure 4 This is a schematic structural diagram of the operation process for the ship of the present invention to berth and connect to the grid. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment: As Figures 1-4 shown, the present invention provides a technical solution: a ship wireless intelligent shore power connection device, including a shore power control cabinet and a portable ship power controller. Inside the shore power control cabinet, there are a shore power controller, an isolation transformer, an air switch, a 630A AC contactor, a solid-state relay, a fuse, a cable, a plug, etc. The shore power connection cable introduces the shore power supply into one end of the contactor through the fuse, and the other end of the contactor is connected to the ship power. Close the air switch, supply power to the shore power controller through the isolation transformer. The shore power controller receives the signal sent by the portable ship power controller, detects the ship-shore voltage signal, and controls the opening and closing of the AC contactor through the solid-state relay to achieve ship-shore grid connection and off-grid. Through the control of the touch screen in the portable ship power controller, input the rated power of the ship generator and the instantaneous load power of the ship, so as to obtain the target frequency of the grid-connected ship power. Adjust the ship generator to the target frequency. Click "Grid Connection Start" on the touch screen of the portable ship power controller, and then through the wireless transceiver device of the ship power controller and the wireless transceiver device of the shore power controller, remotely control the shore power contactor to achieve grid connection. After successful grid connection, at the same time start the frequency and load control, intelligently control the generator power to drop to 10% of the rated power, control the main switch of the generator to trip, and manually turn off the diesel engine. And it can also achieve remote voltage regulation. For example, when the ship connects to the shore power and the load voltage drops severely, a voltage regulation command can be issued to adjust the shore power supply, and wireless voltage regulation is carried out through the ship-shore wireless transceiver device; to stabilize the voltage on the ship. The core of the device of the present invention is to realize wireless intelligent shore power connection. Through wireless transmission and intelligent processing, it realizes convenient shore power connection for ships and remote voltage regulation to make the load voltage of the ship stable.

[0021] Among them, the portable ship power controller can collect the readings of the digital voltmeter or pointer voltmeter on the ship load screen through the camera acquisition device, transmit the relevant voltage data to the intelligent module of the portable ship power controller through the recognition system, and then send the voltage data to the shore power controller at a long distance through the wireless module and the antenna. The portable ship power controller includes a touch screen, a wireless module, an antenna, and an intelligent module.

[0022] By adopting the above technical solution, in the shore power controller, its antenna receives signals, and the wireless module and the intelligent module process and control the solid-state relay in the control cabinet.

[0023] Inside the shore power controller, there are a core module and corresponding intelligent modules.

[0024] By adopting the above technical solution, the 630A AC contactor is controlled by the solid-state relay to achieve automatic ship-shore grid connection, thus realizing seamless intelligent grid connection without having to first disconnect the ship's power and then connect the shore power.

[0025] The core module is a wireless sampling module and an antenna.

[0026] By adopting the above technical solution, two key technologies, namely seamless shore power connection with wireless intelligent control and frequency load control during shore power connection, are taken as important innovation points, and a ship power grid connection device is invented in cooperation with the seamless shore power connection technology of dual-inverter output. During the docking process with the ship's generator, the frequency load control controls the power of the ship's generator after grid connection to 10% power-off. The seamless power supply device for shore power connection is smoothly and reliably docked with the shore power.

[0027] Working principle: The shore power connection method is controlled by remotely operating the touch screen of the portable ship power controller. First, according to the current ship receiving shore power, input the rated power of the ship's generator (KW) and the instantaneous load power of the ship (KW) to obtain the display of the grid connection target frequency. After adjusting the ship's power frequency to match it, click the "Grid Connection Start" touch screen in the portable ship power controller. Its instruction sends a signal to the shore through the wireless device. The shore power controller receives the signal, issues a control instruction to control the solid-state relay in the shore power controller, and controls the opening and closing of the contactor, thereby realizing the rapid grid connection of the ship to the shore power.

[0028] After the ship docks, for grid connection preparation: Adjust the speed of the ship's generator, that is, adjust the ship's power frequency to be equivalent to the shore power frequency. In the portable ship power controller, input the power of the ship's diesel generator and the real-time load it carries into the corresponding columns of the portable ship power controller. The portable ship power controller immediately calculates the grid connection frequency based on the generator power and the load carried. According to the frequency shown on the controller, adjust the ship's diesel power generation frequency to be equivalent to the calculated frequency. In the portable ship power controller, press the [Grid Connection Start] button. The portable ship power control sends a grid connection signal instruction to the shore power controller wirelessly. After the shore power controller receives the signal through the wireless transceiver device, it automatically detects the load voltage, detects the lowest point of the voltage difference envelope between the ship's power and the shore power, and the controller issues a closing instruction to control the 630A AC contactor to close through the solid-state relay, and the ship's power grid connection is successful. After the grid connection is successful, control the power of the ship's generator to 10% power-off to achieve seamless docking with the shore power.

[0029] Closing the switch at the lowest point of the envelope of the voltage difference between the ship's power and shore power can avoid surge current from damaging devices, improve the operating efficiency of ship equipment, reduce the number of equipment starts and stops, and extend the service life of the equipment. For the developed ship power grid connection device, the shore power center processing module collects voltage and current signals on the bus, obtains relevant information through phase sequence detection, phase line voltage detection, phase line phase detection, current detection, etc., and processes this information. It sends a paralleling closing command or a disconnection opening command to the ship power controller, or sends a command to adjust the output power of the generator to the ship power controller. Crew members can respond to various control commands of the operation through the human-machine interface of the touch screen to achieve grid connection.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A wireless intelligent control device for connecting a ship to a shore power supply, including a shore power control cabinet and a portable ship power controller, characterized in that: The shore power control cabinet contains a shore power controller, isolation transformer, air switch, 630A AC contactor, solid-state relay, fuse, cable, plug, etc.

2. The wireless intelligent control shore power connection device for ships according to claim 1, characterized in that: The portable ship electrical controller can collect the digital voltmeter readings or pointer voltmeter readings of the ship load screen through a camera acquisition device, transmit the relevant voltage data to the portable ship electrical controller intelligent module through an identification system, and then send the voltage data to a remote shore power controller through a wireless module and an antenna. The portable ship electrical controller includes a touch screen, a wireless module, an antenna and an intelligent module.

3. The wireless intelligent control shore power connection device for ships according to claim 1, characterized in that: The shore power controller includes a core module and a corresponding intelligent module.

4. The wireless intelligent control shore power connection device for ships according to claim 1, characterized in that: The core modules are wireless sampling module and antenna.

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