CN2872700Y - A marine power supply and transmission system - Google Patents

Abstract

The utility model provides a maritime affairs electric power supply and transmission system, which is built on a ship aiming at a container ship and is used for matching the supply and transmission of ship electricity or shore electricity, and comprises a high-voltage shore electricity junction box, a transformer, a high-voltage junction box, a low-voltage junction box, an automatic switcher, a process controller, a refrigeration container distribution panel, a main distribution panel, a frequency converter and other devices; when the ship is in shore, the shore power is connected to the system through a high-voltage cable, the automatic switcher converts the ship power supply system of the refrigeration container on the ship from the ship power to the refrigeration container distribution board according to the instruction sequence of the process controller, the load of the ship power is reduced, part of generators originally supplying power on the ship are stopped at the moment, the main distribution board on the ship controls the generators to supply power only by one of the generators, when the main distribution board switches the shore power, the ship power can be instantly connected with the shore power in parallel, and after the shore power is supplied, the generators in the rest operation are cut off and the shore power is completely supplied with power.

Description

A marine power supply and transmission system

technical field

The utility model relates to a maritime power supply and transmission system, in particular to a system that is different from the traditional system completely relying on ship power generation. , with the lightest load to avoid the hazards of transient changes such as transformers, generators or other onboard systems.

Background technique

Air pollution sources from ships include stationary pollution sources, mobile pollution sources and combustion air pollution sources. Ships are stationary pollution sources when docked at the wharf, mobile pollution sources when ships are sailing, and ship power systems are combustion air pollution sources. The air pollution sources produced by ships can be mainly divided into: dust and odor air pollution generated by ships during loading and unloading; exhaust pollution generated by diesel engines and boiler combustion in ship power systems. To ensure the survival of the earth is no longer the responsibility of a few people, but the obligation and responsibility of all people living here. Of course, including ships and ship owners cannot stay out of the matter.

The electricity demand on the container ship, including the refrigerated container system and the general power system, is supplied by self-contained generator sets. The power source of these generator sets depends on the power of the ship. For electricity, the diesel engine must be continuously operated. Since the container terminal operates for a long time, the air pollution caused will have a significant impact on the quality of life of the residents on the shore.

Utility model content

The purpose of this utility model is to provide a marine power supply and transmission system, which is built on a ship to match the power supply and transmission of ship power or shore power, which is characterized in that it includes:

High voltage shore power junction box for connecting to shore power;

A high-voltage junction box, installed on the port or starboard side or passage of the ship, is used for the refrigerated container system and for the general system on board in the engine room, and its input end is connected to the high-voltage shore power junction box;

A transformer installed on the port or starboard side or passageway of the ship for the use of the refrigerated container system and the general system of the ship in the engine room, the primary side of which is connected to the high-voltage junction box;

A low-voltage junction box, installed on the port or starboard side or passageway of the ship, for the use of the refrigerated container system and the general system on board in the engine room, and its input terminal is connected to the secondary side of the transformer;

Refrigerated container distribution board, installed on the port or starboard side or passage of the ship, for supplying power to the refrigerated containers loaded on the ship;

An automatic switch, one end is connected to the low-voltage junction box, and the other end is connected to the refrigerated container distribution board, it is normally open when it is powered by ship power, it is connected to a process controller, when it is converted to shore power supply , according to the sequence of the process controller to close and connect the line, so that the shore power is supplied to the distribution panel of the refrigerated container;

Main switchboard, connected to several generators to supply electricity on board;

When the ship is docked, the high-voltage cable is used to connect the shore power to the system, and the transformer supplies power at low voltage. After receiving the power supply signal, the automatic switcher converts the power supply system of the refrigerated container from the ship power to the shore power through the sequence of instructions. At this time, due to the reduction of the load of the ship's electricity, the main switchboard controls to disable some of the original power supply generators on the ship until the main switchboard on the ship is only powered by one of the generators; when the main switchboard is also connected to the shore power, the ship The electricity can be connected in parallel with the shore power instantaneously, and after the power is supplied by the shore power, the remaining generators in operation are cut off and the power is completely supplied by the shore power.

A frequency converter is installed between the main switchboard and the low-voltage junction box to make the system match the frequency of different power systems.

The high-voltage shore power junction box has multiple groups, and its capacity is about 13.2kV/6.6kV, 600A～1200A.

The high-voltage junction box has multiple groups, and vacuum circuit breakers are installed inside, and its capacity is about 13.2kV/6.6kV, 600A～1200A.

There are multiple groups of transformers, which are die-casting transformers, shared by 50/60Hz, with a capacity of about 13.2kV/6.6kV/6.0kV/440V/400V, 1000-3000kVA.

The low-voltage junction box has multiple groups, and an air circuit breaker is installed inside, and its capacity is about 440V/400V, 1200A～6000A.

There are multiple sets of automatic switchers with a capacity of 440V/400V, 600A-1000A.

The high-voltage junction box, the transformer and the low-voltage junction box can be assembled into one body.

The process controller is built with a program logic control system PLC.

From the above, it can be seen that since the power can be supplied by shore power, the power system of the ship can be stopped to reduce the source of air pollution caused by combustion; it is easier and safer because only one generator is running during operation, and it can ensure continuous power supply on board, and The load is small, and the electricity for the refrigerated container system is supplied in sequence by multiple sets of automatic switchers, so there will be no impact on the transformer, thereby increasing the service life of the transformer; Momentary change hazards to generators or onboard systems.

Description of drawings

Fig. 1 is a structural diagram of the power system of the present utility model.

[Description of main component symbols]

High-voltage shore power junction box 1 Transformer 2 High-voltage junction box 3

Low-voltage junction box 4 refrigerated container distributor 5 automatic switcher 6

Process Controller 6’ Main Switchboard 7 Generator Set 8

Inverter 9

Detailed ways

As shown in Figure 1, the power supply and transmission system of the utility model includes a high-voltage shore power junction box (SHORE CONECTION BOX) 1, a transformer (TRANSFORMER) 2, a high-voltage junction box (HIGH VLOTAGE PANEL) 3, a low-voltage junction box (LOW VLOTAGE PANEL) )4, refrigerated container distribution panel (REEFER CONTAINER DISTRIBUTION PANEL) 5, automatic switch 6, process controller (SEQUENCE TRANSFER CONTROL) 6', main switchboard (MAIN SWITCHBOARD) 7, frequency converter (CURRENCY INVERTER) 9 and other devices, It is mainly used to supply power to the cabin system and the power to the refrigerated container system. Here, three generators (GEN) 80, 81, and 82 are used in parallel on the ship shown in Figure 1, and two groups of refrigerated container systems ( Figure not shown) is an example, where:

High-voltage shore power junction box 1 is used to connect to shore power. The two groups are respectively installed on the left and right sides of the ship or the channels on both sides. The capacity is 13.2kV/6.6kV, 600A～1200A;

High-voltage junction box 3, three groups in total, including the first high-voltage junction box (S/S) 30, the second high-voltage junction box (P/S) 31 and the third high-voltage junction box 32 (CENTER), which are equipped with vacuum circuit breakers (VCB), with a capacity of 13.2kV/6.6kV, 600A～1200A, installed on the left and right sides of the ship or the channels on both sides for the use of the refrigerated container system, and for the general system on the ship in the engine room, and its input terminals are respectively connected to The high-voltage shore power junction box 1;

Transformer 2 is a die-casting transformer with three groups in total, shared at 50/60Hz, with a capacity of 13.2kV/6.6kV/6.0kV/440V/400V, 1000-3000kVA, including the first transformer 20 (5.5kV/450V, 2000kVA), the second transformer 21 (6.6kV/450V, 2000kVA) and the third transformer 22 (6.6kV/450V, 1500kVA), respectively installed on the left and right sides of the ship or the channels on both sides for the use of the refrigerated container system, and the engine room It is used by the general system on board, and its primary side is respectively connected to the three sets of high-voltage junction boxes 30, 31, 32;

Low-voltage junction boxes 4, three groups in total, are equipped with air circuit breakers (ACB) with a capacity of 440V/400V, 1200A～6000A, including the first low-voltage junction box (S/S) 40, the second low-voltage junction box (P/ S) 41 and the third low-voltage junction box (CENTER) 42 are respectively installed on the left and right sides of the ship or the channels on both sides for use by the refrigerated container system and in the engine room for use by the general system on board, and their input ends are respectively connected to the three The secondary sides of the group transformers 20, 21, 22;

The refrigerated container distribution panel 5, including the first refrigerated container distribution panel 50 and the second refrigerated container distribution panel 51, is respectively installed on the left and right sides of the ship or the channels on both sides, and is equipped with air circuit breakers (ACB) 4 to 12 group, its capacity is 440V/400V, 600A～1000A;

The automatic switcher 6 has a capacity of about 440V/400V, 600A～1000A, two groups of 4 to 12 in total, one end of which is connected to the low-voltage junction box 4, and the other end is connected to the refrigerated container distribution board 5. When the ship power supply is normally open (Open) state, it is connected to a process controller 6', when the ship power is converted to shore power via the low-voltage junction box 4, it is controlled according to the built-in program logic of the process controller 6' ( PLC) system, the circuit is closed sequentially in sections, so that the shore power is supplied to the distribution board of the refrigerated container for use by the refrigerated container, so as to reduce the instantaneous impact on the transformer 2 during power conversion, thereby increasing the service life of the transformer ;

The main switchboard 7 supplies general electricity on board the ship. When the ship is loaded with refrigerated containers, three generating sets 80, 81, and 82 are connected to be responsible for power supply;

The frequency converter 9 (AC450, 60/50Hz) is connected between the main switchboard 7 and the low-voltage junction box 4 to make the system match the frequency (50/60Hz) of different power systems;

Based on the above, when the ship is docked, the high-voltage cable A is connected to the shore power system, and the shore power is distributed to the transformer 2 and the low-voltage junction box 4 through the high-voltage junction box 3, and the power is supplied from the low-voltage end to the power supply system of the refrigerated container and the general on-board power supply system. electricity system;

When the automatic switcher 6 receives the power signal from the low-voltage junction box 4, it will switch the power supply system of the refrigerated container from the ship power supply to the power supply of the refrigerated container by the shore power supply to the refrigerated container distribution board in accordance with the connected process controller 6' instructing the subsection sequence , at this time, due to the reduction of the load of the ship's electricity, the main switchboard 7 controls the partial generators 80 and 81 that originally supplied power on the ship to be deactivated until the main switchboard 7 on the ship is powered by only one of the generators 82; in the main switchboard 7 When the shore power is also switched, the ship power can be instantaneously connected in parallel with the shore power, and after the power is supplied by the shore power, the remaining running generators 82 are cut off to completely supply power from the shore power.

There are more and more facts that it is difficult for feeder and distribution circuit breakers and insurance protection devices to achieve real protection for solid-state electronic equipment. These devices may be destroyed by extremely short-term transient changes that affect The hazards of electrical equipment are mainly manifested in the following aspects:

1. For electronic equipment;

There are many situations when electronic equipment encounters instantaneous changes. The first situation is that the equipment is disturbed, causing data confusion on the display screen or deadlock of the system, which may cause troubles in operation, but usually does not damage the equipment. The second situation is to accelerate the aging of equipment. If the instantaneous change is quite fixed and frequent, such as pulses appearing in the whole cycle, the aging of system components such as power rectifiers or integrated circuit components will be accelerated. Then the third situation occurs, which is the destruction of components. When the device starts to smoke somewhere or make a sound like a burst, it means that a big danger will occur.

Second, the motor;

Transient changes can affect the motor in several ways, first, if the motor is electronically controlled, it is sensitive to spikes. Second, generally for standard motors, the peak pulse acts on the winding, and the stator winding often absorbs energy due to instantaneous changes and heats up. Depending on the amount of energy absorbed, it will cause the insulation of the winding to drop or be completely destroyed. When the insulation is damaged, the motor will A short circuit or burnout occurs.

Three, the lighting system;

For incandescent systems, the action of the momentary change will cause the filament to blow and the bulb to burst. For standard fluorescent lamp systems, the peak pulse has two effects. First, the internal components of the rectifier are damaged and damaged. Second, if the peak pulse is slow enough to be boosted by the internal transformer, its peak voltage will cause damage to the fluorescent tube. At this time , the lamp can be seen to flicker briefly and then burn out.

Therefore, since the power on board of the utility model can be completely supplied by shore power, the power system of the ship can be stopped to reduce the air pollution source caused by combustion; it is relatively easy and safe because only one generator runs in operation, and it can ensure There is no power on the ship, and the load is small, so it will not cause impact on the transformer. Similarly, when the shore power is converted into ship power supply, it will not cause damage to the generator or the system on the ship. This is the main purpose of the utility model. feature.

In addition to the above, the power supply and transmission system of the present utility model also has the following characteristics, which are futuristic, flexible, safe, high reliability, low risk, easy to operate and easy to maintain, as detailed below:

1. The system design is powered by three sets of molded transformers, which are shared at 50/60Hz. Two sets are installed on the left and right sides of the ship for the refrigerated container system, and one set is installed in the cabin for the general system on board; the molded transformers It is dust-proof and maintenance-free, and it can be powered in time even after a long period of inactivity.

2. The utility model can assemble a high-voltage junction box, a transformer and a low-voltage junction box into one body to facilitate installation.

3. The feeder panel of the refrigerated container of the present invention is equipped with a program logic control (PLC) system, which can sequentially supply power to the refrigerated container system according to the setting, so as to reduce the impact on the transformer and ensure the life and safety of the transformer.

4. When there are no refrigerated containers on board, the special transformer for refrigerated containers can be disabled to reduce the waste of electricity and operating costs.

5. When a special transformer for a refrigerated container fails, the general transformer can provide part of the load to reduce cargo damage.

6. The electric power supply and transmission system of the present invention is equipped with a frequency converter, which is applicable to the demands of various ports in the world in the future.

The above-mentioned embodiments are only used to illustrate the utility model, but not to limit the utility model.

Claims (9)

1. a maritime affairs electric power is built and is put on boats and ships for communication system, supplies to fail in order to the electric power that mates ship electricity or bank electricity, it is characterized in that, comprising:

The high pressure shore connection box is in order to connect bank;

High pressrue connection box is installed on larboard or the starboard or the passage of boats and ships, cooling freeze that the counter system uses and the cabin in for General System use on the ship, its input is connected in described high pressure shore connection box;

Transformer is installed on larboard or the starboard or the passage of boats and ships, cooling freeze that the counter system uses and the cabin in for General System use on the ship, its primary side is connected in described high pressrue connection box;

Low pressure junction box is installed on larboard or the starboard or the passage of boats and ships, cooling freeze that the counter system uses and the cabin in for General System use on the ship, its input is connected in the secondary side of described transformer;

The refrigerated enclosed container distributor cap is installed on larboard or the starboard or the passage of boats and ships, in order to supply power to the refrigerated enclosed container that loads on the boats and ships;

Automatic switchover device, one end is connected in described low pressure junction box, the other end is connected in described refrigerated enclosed container distributor cap, by the power supply of ship electricity the time is normally open, it is connected with a process controller, when being converted to the power supply of bank electricity, connect circuit according to process controller segmentation orderly close-down, make the bank electricity be supplied to the refrigerated enclosed container distributor cap;

Main distributing board is connected with electricity consumption on a plurality of generator supply vessels;

When boats and ships pull in to shore, connect the bank electricity to system with high-tension cable, by transformer with low-voltage power supply, described automatic switchover device is after receiving electric power supply signal, by instruction sequences the refrigerated enclosed container electric power system is converted to by the supply of bank electricity by the ship electricity, this moment is because the load of ship electricity reduces, and described main distributing board control is stopped using the part generator of former power supply on the ship, and main distributing board is only by generator powered wherein on ship; Also transfer bank when electricity at main distributing board, the ship electricity can be instantaneous in parallel with the bank electricity, after the power supply of bank electricity, will remain that generator in turning round excises and fully by the electric supply capability of bank again.

2. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system, between described main distributing board and the low pressure junction box frequency converter is installed, and uses so that the frequency of system matches different electric power is used.

3. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described high pressure shore connection box has many groups, and its capacity is about 13.2kV/6.6kV, 600A～1200A.

4. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described high pressrue connection box has many groups, in vacuum circuit-breaker is housed, its capacity is about 13.2kV/6.6kV, 600A～1200A.

5. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described transformer has many groups, is a kind of die casting formula transformer, and 50/60Hz shares, and its capacity is about 13.2kV/6.6kV/6.0kV/440V/400V, 1000～3000kVA.

6. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described low pressure junction box has many groups, in air circuit is housed, its capacity is about 440V/400V, 1200A～6000A.

7. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described automatic switchover device has many groups, and capacity is 440V/400V, 600A～1000A.

8. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system described high pressrue connection box, transformer and low pressure junction box can be assembled into one.

9. maritime affairs electric power as claimed in claim 1 is characterized in that for communication system, has program logic control system PLC in the described process controller.