CN219322079U - Ship power system - Google Patents
Ship power system Download PDFInfo
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- CN219322079U CN219322079U CN202320300173.XU CN202320300173U CN219322079U CN 219322079 U CN219322079 U CN 219322079U CN 202320300173 U CN202320300173 U CN 202320300173U CN 219322079 U CN219322079 U CN 219322079U
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Abstract
The utility model relates to the technical field of ships, in particular to a ship power system, which comprises a power supply device, a main distribution board, a first main propeller, a second main propeller, a first bow side push, a second bow side push and a bow telescopic push; the main switchboard comprises a first busbar and a second busbar, wherein the first main propeller and the first bow side push are respectively connected with the first busbar, the second main propeller and the second bow side push are respectively connected with the second busbar, the main switchboard further comprises a frequency converter and a first transformer, a power distribution unit of the frequency converter comprises a third busbar, the first busbar is electrically connected with an input end of the third busbar through the first transformer, the second busbar is electrically connected with an input end of the third busbar, and the bow part is telescopically pushed to be electrically connected with an output end of the third busbar. When the main switchboard of the power system has single-point fault, the frequency converter takes electricity from the busbar which does not have fault in the main switchboard, so that the positioning capability of the ship is improved.
Description
Technical Field
The utility model relates to the technical field of ships, in particular to a ship power system.
Background
The spilled oil recovery ship is used as a professional ship for treating the offshore spilled oil event, and has good positioning capability, so that the spilled oil recovery ship can be stably lowered and stably operated, and can better play a role in emergency preparation. The ship DP power system comprises a thruster system and a positioning control system, wherein the thruster system comprises two nacelle full-rotation main thrusters, two head-side thrusters and a bow telescopic thruster. The conventional DP power system of the oil spill recovery ship adopts a conventional power supply scheme to carry out grouping power supply on the propellers of different redundancy groups according to the power positioning power supply redundancy requirement in the CCS specification, and divides all the propellers into a group A and a group B and provides power in groups, wherein the power supply of other propellers cannot be influenced by any group of power failure.
Under the power positioning and power supply redundancy requirement, the single bow expansion and pushing can only be classified into a group A or a group B. However, because the telescopic pushing of the bow has obvious advantages on the ship positioning capability, if the power supply group where the telescopic pushing of the bow is located has the largest single-point fault, the whole power system can only leave 1 full-rotation main propeller and 1 bow side push to provide power for ship positioning, the positioning capability of the ship can be greatly reduced, and particularly, the spilled oil recovery emergency rescue ship is usually used for rescue under the very severe sea condition, so that the ship positioning capability needs to be improved as much as possible.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problem to be solved by the utility model is to provide a ship power system which can improve the ship positioning capability.
In order to solve the technical problems, the utility model adopts the following technical scheme: the ship power system comprises a power supply device, a main distribution board, a first main propeller, a second main propeller, a first bow side push, a second bow side push and a bow expansion push; the main switchboard comprises a first busbar and a second busbar, the two power supply devices are respectively connected with the first busbar and the second busbar in a one-to-one correspondence mode, the first main propeller and the first bow side push are respectively connected with the first busbar, the second main propeller and the second bow side push are respectively connected with the second busbar, the power distribution unit of the frequency converter comprises a third busbar, the first busbar is electrically connected with the input end of the third busbar through the first transformer, the second busbar is electrically connected with the input end of the third busbar, and the bow part is flexible to push and is electrically connected with the output end of the third busbar.
Further, the power supply device comprises more than two generator sets, and the generating power of the generator sets is more than 1000kW.
Further, auxiliary equipment and a second transformer of the telescopic pushing of the bow are further included, and the auxiliary equipment is electrically connected with the output end of the third busbar through the second transformer.
Further, the first busbar and the second busbar are both alternating current busbars, and the third busbar is a direct current busbar;
the frequency converter comprises two DC/AC power converters and two AC/DC power converters, and the first transformer and the second busbar are respectively and electrically connected with the input end of the third busbar through one AC/DC power converter; the bow telescopic push and the second transformer are respectively and electrically connected with the output end of the third busbar through one DC/AC power converter.
Further, the first connection switch between the first busbar and the second busbar is disconnected.
Further, the first transformer is an isolation transformer.
The utility model has the beneficial effects that: the utility model provides a ship power system realizes being connected with the power supply of converter through pushing away the bow is flexible with the output electricity of third female row is connected, because the power supply of third female row comes from two power supply unit who is connected with first female row and second female row respectively, so the power of the distribution unit of converter comes from two independent power supply unit to can realize that a bow is flexible pushes away and is supplied power by two power supply unit simultaneously. When the main switchboard of the power system has single-point faults, the frequency converter takes electricity from a busbar which does not have faults in the main switchboard, so that 50% of power sources can be still obtained by the telescopic pushing of the bow part, the complete stopping and swinging of the telescopic pushing of the bow part is avoided, and therefore, when the power system has single-point faults, at least one main propeller, one bow side pushing and the telescopic pushing of the bow part can provide power for positioning of a ship, and the positioning capability of the ship is improved.
Drawings
FIG. 1 is a block diagram showing a connection of a marine power system according to the present utility model;
FIG. 2 is a block diagram showing a connection of a marine power system according to the present utility model;
FIG. 3 is an enlarged view of portion A of FIG. 2;
description of the reference numerals:
1. a power supply device; 11. a first power supply group; 12. a second power supply group; 13. a generator set; 14. mooring the generator; 2. a main switchboard; 21. a first busbar; 22. a second busbar; 3. a first main propeller; 4. a second main propeller; 5. pushing the first bow; 6. pushing the second bow; 7. the bow part is pushed in a telescopic way; 8. a frequency converter; 81. a DC/AC power converter; 82. an AC/DC power converter; 83. a power distribution unit; 831. a third busbar; 9. a first transformer; 10. a second transformer; 101. an auxiliary device; 102. a power transformer.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 3, the present utility model provides a ship power system, which includes a power supply device, a main switchboard, a first main propeller, a second main propeller, a first bow side push, a second bow side push and a bow expansion push; the main switchboard comprises a first busbar and a second busbar, the two power supply devices are respectively connected with the first busbar and the second busbar in a one-to-one correspondence mode, the first main propeller and the first bow side push are respectively connected with the first busbar, the second main propeller and the second bow side push are respectively connected with the second busbar, the power distribution unit of the frequency converter comprises a third busbar, the first busbar is electrically connected with the input end of the third busbar through the first transformer, the second busbar is electrically connected with the input end of the third busbar, and the bow part is flexible to push and is electrically connected with the output end of the third busbar.
From the above description, the beneficial effects of the utility model are as follows: the utility model provides a ship power system realizes being connected with the power supply of converter through pushing away the bow is flexible with the output electricity of third female row is connected, because the power supply of third female row comes from two power supply unit who is connected with first female row and second female row respectively, so the power of the distribution unit of converter comes from two independent power supply unit to can realize that a bow is flexible pushes away and is supplied power by two power supply unit simultaneously. When the main switchboard of the power system has single-point faults, the frequency converter takes electricity from a busbar which does not have faults in the main switchboard, so that 50% of power sources can be still obtained by the telescopic pushing of the bow part, the complete stopping and swinging of the telescopic pushing of the bow part is avoided, and therefore, when the power system has single-point faults, at least one main propeller, one bow side pushing and the telescopic pushing of the bow part can provide power for positioning of a ship, and the positioning capability of the ship is improved.
Further, the power supply device comprises more than two generator sets, and the generating power of the generator sets is more than 1000kW.
From the above description, each power supply device can supply power through more than two generator sets, so that power failure caused by faults of a single generator set can be avoided, and the safety performance of power supply is improved.
Further, auxiliary equipment and a second transformer of the telescopic pushing of the bow are further included, and the auxiliary equipment is electrically connected with the output end of the third busbar through a second transformer.
From the description, auxiliary equipment for assisting the telescopic pushing of the bow part is powered from the busbar of the frequency converter in the connection mode, so that the auxiliary equipment and the telescopic pushing of the bow part can be ensured to run synchronously.
Further, the first busbar and the second busbar are both alternating current busbars, and the third busbar is a direct current busbar;
the frequency converter comprises two DC/AC power converters and two AC/DC power converters, and the first transformer and the second busbar are respectively and electrically connected with the input end of the third busbar through one AC/DC power converter; the bow telescopic push and the second transformer are respectively and electrically connected with the output end of the third busbar through one DC/AC power converter.
From the above description, the frequency converter realizes bidirectional inversion of current through the DC/AC power converter and the AC/DC power converter, and realizes the busbar under-voltage control function of the frequency converter, thereby playing a role in power supply protection.
Further, the first connection switch between the first busbar and the second busbar is disconnected.
From the above description, it is known that the first busbar and the second busbar are disconnected, so that separate power supply can be realized.
Further, the first transformer is an isolation transformer.
Referring to fig. 1 to 3, a first embodiment of the present utility model is as follows: there is provided a marine power system comprising a power supply 1, a main switchboard 2, a first main propulsion 3, a second main propulsion 4, a first bow side push 5, a second bow side push 6, a bow telescopic push 7, a frequency converter 8, a first transformer 9, a second transformer 10 and auxiliary equipment 101 for bow telescopic push. Specifically, the power supply device includes a first power supply unit 11 and a second power supply unit 12, where the first power supply unit and the second power supply unit each include two power generating units 13, the first power supply unit further includes a parking power generator 14, and the second power supply unit includes two power generating units. The generating power of the generating set is larger than 1000kW, the generating power of the preferable generating set is 2310kW, and the generating power of the parking generator is 400kW.
In this embodiment, the first transformer is an isolation transformer.
In this embodiment, the main switchboard includes a first busbar 21 and a second busbar 22, where the first busbar and the second busbar are ac busbars, and a first connection switch between the first busbar and the second busbar is turned off. The voltages of the first busbar and the second busbar are 690V respectively. The output end of the first power supply group is electrically connected with the input end of the first busbar, and the output end of the second power supply group is electrically connected with the input end of the second busbar. The first main propeller and the first bow side pusher are respectively and electrically connected with the output end of the first busbar, the second main propeller and the second bow side pusher are respectively and electrically connected with the output end of the second busbar,
in this embodiment, the frequency converter includes two DC/AC power converters 81, two AC/DC power converters 82, and a power distribution unit 83, and the power distribution unit of the frequency converter includes a third busbar 831, where the third busbar is a DC busbar. Specifically, the input end of the third busbar is electrically connected with one end of the first transformer through one AC/DC power converter, and the other end of the first transformer is electrically connected with the output end of the first busbar. The input end of the third busbar is electrically connected with the output end of the second busbar through the other AC/DC power converter. The bow telescopic push is electrically connected with the output end of the third busbar through one DC/AC power converter. One end of the second transformer is electrically connected with the output end of the third busbar through another DC/AC power converter, and the other end of the second transformer is electrically connected with the auxiliary equipment. In this embodiment, the auxiliary equipment includes a seawater cooling pump, a fresh water cooling pump, a hydraulic pump station starter, a lubricating oil pump starter, a third isolation transformer, an AFE and a control box; the seawater cooling pump, the fresh water cooling pump, the hydraulic pump station starter, the third isolation transformer of the lubricating oil pump starter, the AFE and the control box are all electrically connected with the output end of the third busbar through the second transformer.
In this embodiment, the power of the first main propeller and the second main propeller is 3000kW, the power of the first bow side pushing and the second bow side pushing is 1200kW, and the power of the bow expansion pushing is 1000kW.
In this embodiment, two power transformers 102 are further included, one power transformer is electrically connected to the output end of the first busbar, and the other power transformer is electrically connected to the output end of the second busbar.
In this embodiment, the capacity of the first transformer is 800kVA, the capacity of the second transformer is 200kVA, and the capacity of the power transformer is 1500kVA.
Working principle:
the first power supply group and the second power supply group of the power supply device generate power through the generator set, the first power supply group supplies power to the first busbar, the second power supply group supplies power to the second busbar, the first main propeller and the first bow side push respectively supply power to the first busbar, and the second main propeller and the second bow side push respectively supply power to the second busbar; the frequency converter comprises a third busbar, the third busbar is used for supplying power to the first busbar and the second busbar, the bow part is telescopically pushed to be connected with a power distribution unit of the frequency converter through being electrically connected with an output end of the third busbar, and the third busbar is provided with a power supply required for providing thrust for the bow part. When the main switchboard of the power system normally operates, the bow telescopic pushing has 100% of power sources, and when the main switchboard of the power system has single-point faults, the frequency converter takes electricity from a busbar which does not have faults in the main switchboard, so that 50% of power sources can still be obtained by the bow telescopic pushing.
In summary, the present utility model provides a ship power system, which is electrically connected to the output end of the third busbar by stretching and pushing the bow, so as to realize power supply connection with the frequency converter. When the main switchboard of the power system has single-point faults, the frequency converter takes electricity from a busbar which does not have faults in the main switchboard, so that 50% of power sources can be still obtained by the telescopic pushing of the bow part, the complete stopping and swinging of the telescopic pushing of the bow part is avoided, and therefore, when the power system has single-point faults, at least one main propeller, one bow side pushing and the telescopic pushing of the bow part can provide power for positioning of a ship, and the positioning capability of the ship is improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (6)
1. A ship power system comprises a power supply device, a main distribution board, a first main propeller, a second main propeller, a first bow side push, a second bow side push and a bow expansion push; the main switchboard comprises a first busbar and a second busbar, the two power supply devices are respectively connected with the first busbar and the second busbar in a one-to-one correspondence manner, the first main propeller and the first bow side push are respectively connected with the first alternating current busbar, and the second main propeller and the second bow side push are respectively connected with the second alternating current busbar.
2. The marine power system of claim 1, wherein the power supply means comprises more than two generator sets, the generator sets having a power generation of greater than 1000kW.
3. The marine power system of claim 1, further comprising a bow telescoping auxiliary device and a second transformer, wherein the auxiliary device is electrically connected to the output of the third busbar through the second transformer.
4. A marine propulsion system as claimed in claim 3 wherein the first busbar and the second busbar are both ac busbars and the third busbar is a dc busbar;
the frequency converter comprises two DC/AC power converters and two AC/DC power converters, and the first transformer and the second busbar are respectively and electrically connected with the input end of the third busbar through one AC/DC power converter; the bow telescopic push and the second transformer are respectively and electrically connected with the output end of the third busbar through one DC/AC power converter.
5. The marine propulsion system of claim 1, wherein the first connection switch between the first busbar and the second busbar is open.
6. The marine power system of claim 1, wherein the first transformer is an isolation transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320300173.XU CN219322079U (en) | 2023-02-23 | 2023-02-23 | Ship power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320300173.XU CN219322079U (en) | 2023-02-23 | 2023-02-23 | Ship power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219322079U true CN219322079U (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320300173.XU Active CN219322079U (en) | 2023-02-23 | 2023-02-23 | Ship power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219322079U (en) |
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2023
- 2023-02-23 CN CN202320300173.XU patent/CN219322079U/en active Active
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