CN113746098A - Ship power distribution system and main system - Google Patents
Ship power distribution system and main system Download PDFInfo
- Publication number
- CN113746098A CN113746098A CN202111151711.5A CN202111151711A CN113746098A CN 113746098 A CN113746098 A CN 113746098A CN 202111151711 A CN202111151711 A CN 202111151711A CN 113746098 A CN113746098 A CN 113746098A
- Authority
- CN
- China
- Prior art keywords
- switch
- distribution board
- motor
- propulsion
- energy storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides a ship power distribution system and a main system, wherein the ship power distribution system comprises: a distribution board, a motor, an energy storage device and a generator; the distribution board includes: the system comprises a left propulsion power distribution board, a right propulsion power distribution board and an energy storage power distribution board; an electric motor comprising an energy storage side-push electric motor; the energy storage distribution board is connected with the left propulsion distribution board and is also respectively connected with the right propulsion distribution board, the energy storage side-pushing motor and the energy storage device; the left propulsion distribution board and the right propulsion distribution board are both connected with the generator; the generator is used for providing power for the plurality of motors through the distribution board; the energy storage device is used for providing a standby power supply when the left propulsion distribution board or the right propulsion distribution board cannot distribute power for the energy storage distribution board so as to ensure the continuity of the power supply provided by the energy storage side propulsion motor by the energy storage distribution board; and the motor is used for controlling the running state of the ship. The ship power distribution system can still maintain the redundancy of the system and reduce the ship building cost under the condition of reducing one side push of the ship.
Description
Technical Field
The invention relates to the technical field of power ship control, in particular to a ship power distribution system and a main system.
Background
A Dynamic Positioning System (DP) is a closed-loop control System, which uses a thruster to provide environmental force to resist wind, waves, flow and the like acting on a ship, so that the ship is kept at a required position on the sea level as much as possible, the Positioning cost of the ship cannot increase with the increase of the water depth, and the operation is convenient.
For a ship equipped with a secondary Dynamic positioning system (DP 2 for short) and a tertiary Dynamic positioning system (DP 3 for short), a redundant design needs to be made for a propulsion motor for Dynamic positioning and a power supply system thereof, so as to ensure that the DP system still has the capability of maintaining or recovering the Dynamic positioning thereof when a maximum single point fault occurs, thereby ensuring the safety of the ship.
At present, the conventional method is to arrange an equal number of propulsion motors on two sides of a distribution board, and when the maximum single point fault occurs (such as short circuit of the distribution board, and failure of half of the distribution board), the remaining half of the propulsion motors can still maintain the dynamic positioning capability of the ship. For ships with severe operating sea conditions and high DP positioning capability requirements, the number of the propulsion motors can exceed 4 and reach 6 or more, the design can occupy larger space of the ships, and meanwhile, the shipbuilding cost is also high.
Disclosure of Invention
The invention aims to provide a ship power distribution system and a main system, which can ensure the functions of a DP2 or DP3 system of a ship, reduce the installation of a side-push motor and further reduce the ship construction cost.
In a first aspect, an embodiment of the present invention provides a ship power distribution system, where the ship power distribution system includes: a distribution board, a motor, an energy storage device and a generator; the distribution board includes: the system comprises a left propulsion power distribution board, a right propulsion power distribution board and an energy storage power distribution board; an electric motor comprising an energy storage side-push electric motor; the energy storage distribution board is connected with the left propulsion distribution board and is also respectively connected with the right propulsion distribution board, the energy storage side-pushing motor and the energy storage device; the left propulsion distribution board and the right propulsion distribution board are both connected with the generator; the generator is used for providing power for the plurality of motors through the distribution board; the energy storage device is used for providing a standby power supply when the left propulsion distribution board or the right propulsion distribution board cannot distribute power for the energy storage distribution board so as to ensure the continuity of the power supply provided by the energy storage side propulsion motor by the energy storage distribution board; and the motor is used for controlling the running state of the ship.
Furthermore, the motor also comprises a left main push motor and a left side push motor; the left main push motor and the left side push motor are both connected with the left push distribution board; and the left pushing distribution board is used for distributing power for the left main pushing motor and the left pushing motor respectively.
Furthermore, the motor also comprises a right main push motor and a right side push motor; the right main push motor and the right main push motor are connected with the right push distribution board; and the right pushing power distribution board is used for distributing power for the right main pushing motor and the right pushing motor respectively.
Furthermore, a first switch is arranged in a built-in circuit of the left propulsion distribution board; a second switch is arranged in a built-in circuit of the right propulsion distribution board; a third switch, a fourth switch, a fifth switch and a sixth switch are arranged in a built-in circuit of the energy storage distribution board; the generator further comprises a first main generator, a second main generator, a third main generator and a fourth main generator; the first main generator and the second main generator are respectively connected with the left propulsion distribution board; a first main generator and a second main generator for providing power to the left propulsion switchboard; the third main generator and the fourth main generator are respectively connected with the right propulsion distribution board; a third main generator and a fourth main generator for providing power to the right propulsion switchboard.
Further, when the ship is in a dynamic positioning working state, the left main push motor, the left side push motor, the energy storage side push motor, the right main push motor and the right side push motor are all used for controlling the running state of the ship; the first switch, the second switch, the third switch, the fifth switch and the sixth switch are in a closed state, and the fourth switch is in an open state; a left propulsion switchboard to distribute power to the energy storage device; or the first switch, the second switch, the fourth switch, the fifth switch and the sixth switch are in a closed state, and the third switch is in an open state; and the right propulsion distribution board is used for distributing power for the energy storage device.
Further, when the left propulsion distribution board fails, the second switch, the fourth switch, the fifth switch and the sixth switch are controlled to be in a closed state, and the first switch and the third switch are controlled to be in an open state; so that the energy storage side push motor, the right main push motor and the right side push motor are all used for controlling the running state of the ship.
Further, when the right propulsion distribution board fails, the first switch, the third switch, the fifth switch and the sixth switch are controlled to be in a closed state, and the second switch and the fourth switch are controlled to be in an open state; so that the energy storage side push motor, the left main push motor and the left side push motor are all used for controlling the running state of the ship.
Further, when the energy storage distribution board fails, the first switch and the second switch are controlled to be in a closed state, and the third switch and the fourth switch are controlled to be in an open state; so that the left main push motor, the left side push motor, the right main push motor and the right side push motor are all used for controlling the running state of the ship.
Further, the ship power distribution system further comprises a frequency converter and an inverter; the distribution board and the frequency converter are sequentially connected with the motor, and the frequency converter is used for adjusting the frequency of a power supply; the energy storage distribution board, the inverter and the energy storage device are sequentially connected, and the inverter is used for converting alternating current and direct current.
In a second aspect, the present invention also provides a ship power distribution main system, where the main system includes a ship, a dynamic positioning control system, and the ship power distribution system; the ship power distribution system is arranged on a ship and is connected with the dynamic positioning control system; the dynamic positioning control system is used for receiving an external signal so as to enable the ship power distribution system to control the running state of a ship according to the requirement of a user; the vessel is equipped with a secondary dynamic positioning system or a tertiary dynamic positioning system.
The embodiment provided by the invention has the following beneficial effects:
the invention provides a ship power distribution system and a main system, wherein the ship power distribution system comprises: a distribution board, a motor, an energy storage device and a generator; the distribution board includes: the system comprises a left propulsion power distribution board, a right propulsion power distribution board and an energy storage power distribution board; an electric motor comprising an energy storage side-push electric motor; the energy storage distribution board is connected with the left propulsion distribution board and is also respectively connected with the right propulsion distribution board, the energy storage side-pushing motor and the energy storage device; the left propulsion distribution board and the right propulsion distribution board are both connected with the generator; the generator is used for providing power for the plurality of motors through the distribution board; the energy storage device is used for providing a standby power supply when the left propulsion distribution board or the right propulsion distribution board cannot distribute power for the energy storage distribution board so as to ensure the continuity of the power supply provided by the energy storage side propulsion motor by the energy storage distribution board; and the motor is used for controlling the running state of the ship. The ship power distribution system can still maintain the redundancy of the system and reduce the ship building cost under the condition of reducing one side push of the ship.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention as set forth above.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a single line diagram of a prior art marine power distribution system;
FIG. 2 is a schematic diagram of a ship power distribution system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another marine power distribution system provided by an embodiment of the present invention;
fig. 4 is a single line diagram of a distribution board provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a ship power distribution main system according to an embodiment of the present invention.
Icon: 101-a first electrical panel; 102-a second switchboard; 103-a first main push motor; 104-a first side push motor; 105-a second side propulsion motor; 106-a second main push motor; 107-third side push motor; 108-fourth side push motor; 200-a marine power distribution system; 201-left propulsion switchboard; 202-right propulsion switchboard; 203-energy storage distribution board; 204-an energy storage device; 205-energy storage side-pushing motor; 206-a generator; 301-a first main generator; 302-a second main generator; 303-a third main generator; 304-a fourth main generator; 305-left main push motor; 306-left side push motor; 307-right main push motor; 308-right side push motor; 401-a first switch; 402-a second switch; 403-a third switch; 404-a fourth switch; 405-a fifth switch; 406-a sixth switch; 407-frequency converter; 408-an inverter; 409-daily distribution board; 500-a ship power distribution main system; 501-a ship; 502-dynamic positioning control system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For ships equipped with DP2 and DP3, the propulsion motors and their power supply systems for dynamic positioning need to be designed redundantly to ensure that the DP system still has the ability to maintain or restore its dynamic positioning in the event of a maximum single point failure, thereby ensuring the safety of the ship.
At present, the conventional method is to arrange an equal number of propulsion motors on two sides of a distribution board, and when the maximum single point fault occurs (such as short circuit of the distribution board, and failure of half of the distribution board), the remaining half of the propulsion motors can still maintain the dynamic positioning capability of the ship. For a ship with severe operating sea conditions and a high DP positioning capability requirement, the number of propulsion motors may exceed 4, and may reach 6 or more, as shown in fig. 1, which is a single line diagram of a DP3 ship power system in the prior art, and the diagram is provided with two power distribution boards (a first power distribution board 101, a second power distribution board 102), 2 main propulsion motors (a first main propulsion motor 103, a second main propulsion motor 106), and 4 side propulsion motors (a first side propulsion motor 104, a second side propulsion motor 105, a third side propulsion motor 107, and a fourth side propulsion motor 108), that is, a total of 6 motors are provided. When the maximum single point fault occurs, one main push and 2 side pushes are left to work, and the capability of the DP system can be maintained.
Based on the above, the embodiment of the invention provides a ship power distribution system and a main system, and the technology can be applied to the power distribution scene of ships configured with DP2 and DP 3.
Example one
To facilitate understanding of the present embodiment, a ship power distribution system 200 disclosed in the present embodiment is first described, as shown in fig. 2.
The ship power distribution system 200 includes: a switchboard, motor, energy storage device 204, and generator 206; the distribution board includes: a left propulsion switchboard 201, a right propulsion switchboard 202 and an energy storage switchboard 203. Motors, including energy storage side thrust motor 205; the energy storage power distribution board 203 is connected with the left propulsion power distribution board 201, and is also respectively connected with the right propulsion power distribution board 202, the energy storage side propulsion motor 205 and the energy storage device 204; the left propulsion switchboard 201 and the right propulsion switchboard 202 are both connected with the generator 206; generator 206 is used to provide power to the plurality of motors through the power distribution board; the energy storage device 204 is used for providing standby power when the left propulsion distribution board 201 or the right propulsion distribution board 202 cannot distribute power for the energy storage distribution board 203, so as to ensure the continuity of the power provided by the energy storage distribution board 203 to the energy storage side propulsion motor 205; and the motor is used for controlling the running state of the ship.
In particular implementations, the panels are suitable for use in coastal, ocean and river marine ac power stations, ac 440V50HZ or 450V60HZ grids, for controlling and monitoring the operation of the main generator 206, and for distributing power from the ship or shore power (generator 206) through the main panels (left propulsion panel 201 and right propulsion panel 202) to the marine power plant. The generator 206 can provide power to the left propulsion switchboard 201 and the right propulsion switchboard 202, and then the left propulsion switchboard 201 or the right propulsion switchboard 202 can distribute power to the energy storage switchboard 203; note that, here, the left and right propulsion switchboards 201, 202 cannot simultaneously supply power to the energy storage switchboard 203 to affect the operating state of one switchboard when the other switchboard malfunctions. When one of the left propulsion switchboard 201 or the right propulsion switchboard 202 encounters a failure, the energy storage switchboard 203 is allowed to replace the failed line, i.e., one more side propulsion motor is provided in order to ensure redundancy of the DP2 and DP3 systems, and the number of motors provided on the left and right switchboards is reduced, thereby finally reducing the total number of motors.
The embodiment of the invention provides a ship power distribution system, which comprises: a distribution board, a motor, an energy storage device and a generator; the distribution board includes: the system comprises a left propulsion power distribution board, a right propulsion power distribution board and an energy storage power distribution board; an electric motor comprising an energy storage side-push electric motor; the energy storage distribution board is connected with the left propulsion distribution board and is also respectively connected with the right propulsion distribution board, the energy storage side-pushing motor and the energy storage device; the left propulsion distribution board and the right propulsion distribution board are both connected with the generator; the generator is used for providing power for the plurality of motors through the distribution board; the energy storage device is used for providing a standby power supply when the left propulsion distribution board or the right propulsion distribution board cannot distribute power for the energy storage distribution board so as to ensure the continuity of the power supply provided by the energy storage side propulsion motor by the energy storage distribution board; and the motor is used for controlling the running state of the ship. The ship power distribution system can still maintain the redundancy of the system and reduce the ship building cost under the condition of reducing one side push of the ship.
Example two
To facilitate an understanding of the present embodiment, another ship power distribution system 200 disclosed in the present embodiment is described, as shown in fig. 3.
The motor further includes a left main push motor 305 and a left push motor 306; a left main push motor 305 and a left push motor 306, both connected to the left push switchboard 201; a left push switchboard 201 for distributing power to the left main push motor 305 and the left push motor 306, respectively.
The motor further comprises a right main push motor 307 and a right push motor 308; a right main push motor 307 and a right push motor 308, both connected to the right push switchboard 202; and a right push switchboard 202 for distributing electric power to a right main push motor 307 and a right push motor 308, respectively.
The generator 206 further comprises a first main generator 301, a second main generator 302, a third main generator 303 and a fourth main generator 304; the first main generator 301 and the second main generator 302 are respectively connected with the left propulsion switchboard 201; a first main generator 301 and a second main generator 302 for providing power to the left propulsion switchboard 201; the third main generator 303 and the fourth main generator 304 are respectively connected with the right propulsion switchboard 202; a third main generator 303 and a fourth main generator 304 for providing power to the right propulsion switchboard 202.
Specifically, the generator 206 is a device for providing power, i.e., 4 generators 206 are used to provide power to the system. The left and right propulsion switchboards 201, 202 are devices between the generator 206 and the motor, and are a kind of bridge for orderly distributing power to the motor.
A first switch 401 is provided in the built-in circuit of the left propulsion power board 201; a second switch 402 is provided in the built-in circuit of the right propulsion switchboard 202; the built-in circuit of the energy storage distribution board 203 is provided with a third switch 403, a fourth switch 404, a fifth switch 405 and a sixth switch 406, as shown in fig. 4, which is a single line diagram of a ship distribution board.
The following (a) to (b) are operation principles of the ship power distribution system 200. It is first assumed that any one main pusher motor and any two side pusher motors can meet the requirements for maintaining the DP system capability.
When the ship is in a normal navigation state and in a near-port working state, the left propulsion distribution board 201 and the right propulsion distribution board 202 simultaneously supply power to the energy storage distribution board. The first switch 401, the second switch 402, the third switch 403, and the fourth switch 404 are all in a closed state.
In particular implementations, any one of the main generators can now power the entire marine power distribution system 200, i.e., any generator can power all of the propulsion systems and charge the energy storage device. At this time, the left and right propulsion switchboards are connected to the energy storage switchboard 203, and both can distribute power to the energy storage switchboard 203 at the same time.
When the ship is in a dynamic positioning working state, the left main push motor 305, the left side push motor 306, the energy storage side push motor 205, the right main push motor 307 and the right side push motor 308 are all used for controlling the running state of the ship; the first switch 401, the second switch 402, the third switch 403, the fifth switch 405, and the sixth switch 406 are in a closed state, and the fourth switch 404 is in an open state; a left propulsion switchboard 201 for distributing power to the energy storage device 204.
Specifically, in the above situation, that is, in the DP operation condition, the first switch 401, the second switch 402, the third switch 403, the fifth switch 405, and the sixth switch 406 are in the closed state, so that the left propulsion power distribution board 201 and the energy storage power distribution board 203 are connected, and further the first main generator 301 and the second main generator 302 supply power to the left propulsion system, and then charge the energy storage device 204 through the left propulsion system; the third main generator 303 and the fourth main generator 304 supply power to the right propulsion system.
(1) When the left propulsion switchboard 201 fails during the distribution of power to the energy storage device 204 at the left propulsion switchboard 201, the second switch 402, the fourth switch 404, the fifth switch 405 and the sixth switch 406 are controlled to be in a closed state, and the first switch 401 and the third switch 403 are controlled to be in an open state; so that the energy storage side push motor 205, the right main push motor 307 and the right side push motor 308 are all used for controlling the running state of the ship.
In specific implementation, when a single point fault that the left propulsion distribution board 201 is short-circuited occurs, the first switch 401 is immediately opened, the energy storage side propulsion motor 205 is instantly supplied with Power by the energy storage device 204, meanwhile, the Power Management System (PMS) of the distribution board is automatically switched to the fourth switch 404 to be closed, the third switch 403 is opened, the right propulsion distribution board 202 supplies Power to the energy storage distribution board 203, so that the situation that one main propulsion board and two side propulsion boards are always on the grid is ensured, and the DP System keeps the Power positioning capability.
(2) When the right propulsion switchboard 202 fails during the distribution of power to the energy storage device 204 at the left propulsion switchboard 201, the first switch 401, the third switch 403, the fifth switch 405 and the sixth switch 406 are controlled to be in a closed state, and the second switch 402 and the fourth switch 404 are controlled to be in an open state; so that the energy storage side push motor 205, the left main push motor 305 and the left side push motor 306 are all used for controlling the running state of the ship.
In a particular implementation, when a single point failure occurs that shorts the right propulsion switchboard 202, the second switch 402 is immediately opened and the fourth switch 404 is inherently open. At the moment, the main push and the two side pushes are always on the net, so that the DP system is ensured to keep the power positioning capability.
(3) When the energy storage distribution board 203 fails in the process of distributing power to the energy storage device 204 at the left propulsion distribution board 201, controlling the first switch and the second switch to be in a closed state, and controlling the third switch and the fourth switch to be in an open state; so that the left main push motor, the left side push motor, the right main push motor and the right side push motor are all used for controlling the running state of the ship.
In particular implementations, the energy storage switchboard 203 is used to power the side thrust and energy storage devices 204 of the switchboard itself. And the energy storage device 204 is used for providing a standby power supply when the energy storage distribution board 203 loses the main power supply, so as to ensure the power supply continuity of the energy storage distribution board 203. When a single point fault of short circuit of the energy storage distribution board 203 occurs, the third switch 403 is controlled to be immediately switched off, at the moment, the fourth switch 404 is switched off originally, and at the moment, the left main push and the right main push and the two side pushes are simultaneously on the net, so that the DP system is ensured to keep the power positioning capability.
Thirdly, when the ship is in a dynamic positioning working state, the left main push motor 305, the left side push motor 306, the energy storage side push motor 205, the right main push motor 307 and the right side push motor 308 are all used for controlling the running state of the ship; the first switch 401, the second switch 402, the fourth switch 404, the fifth switch 405, and the sixth switch 406 are in a closed state, and the third switch 403 is in an open state; a right propulsion switchboard 202 for distributing power to an energy storage device 204.
In a specific implementation, the above case is different from the case (two) in that the left propulsion distribution board 201 distributes power to the energy storage device 204; and case (three) is where the right propulsion switchboard 202 distributes power to the energy storage device 204.
(1) When the left propulsion switchboard 201 fails during the distribution of power to the energy storage device 204 at the right propulsion switchboard 202, the first switch 401 is controlled to be immediately opened, and the third switch 403 is opened at this time. In this case, it is ensured that one main push (right main push motor 307) and two side pushes (right side push motor 308 and energy storage side push motor 205) are always on the net, thereby ensuring that the DP system maintains the dynamic positioning capability.
(2) When the right propulsion switchboard 202 distributes power to the energy storage device 204, when the right propulsion switchboard 202 fails, the second switch 402 is controlled to be immediately switched off, the energy storage side propulsion motor 205 is instantly powered by the energy storage device 204, meanwhile, the switchboard PMS is automatically switched to be switched on by the third switch 403, the fourth switch 404 is switched off, and the left propulsion switchboard 201 supplies power to the energy storage switchboard 203, so that the situation that one main propulsion switchboard and two side propulsion switchboards are always on the net is ensured, and the DP system is ensured to keep the power positioning capability.
(3) When the energy storage distribution board 203 fails during the distribution of power to the energy storage device 204 by the right propulsion distribution board 202, the fourth switch 404 is controlled to be opened immediately, and the third switch 403 is opened originally. In this case, the left main push and the right main push and the left side push and the right side push are simultaneously on the net, so that the DP system is ensured to keep the dynamic positioning capability.
In a specific implementation, in a DP operation condition, the left propulsion distribution board 201 and the right propulsion distribution board 202 cannot distribute power to the energy storage device 204 at the same time (that is, the second situation and the third situation do not occur at the same time, so as to prevent the distribution board on one side from working when a fault occurs, and the distribution board on the other side is affected); one of the third switch 403 and the fourth switch 404 is closed and one is open and the energy storage switchboard 203 is powered by one of the propulsion switchboards. Specifically, in the DP operating state, when the third switch 403 is closed and the fourth switch 404 is open, power is distributed to the energy storage power board 203 by the left propulsion power board 201; or when the third switch 403 is open and the fourth switch 404 is closed, power is distributed to the energy storage switchboard 203 by the right propulsion switchboard 202.
The ship power distribution system 200 further includes a frequency converter 407; the switchboard, the frequency converter 407 are connected with the motor in sequence, and the frequency converter 407 is used for adjusting the power supply frequency.
The ship power distribution system 200 further includes an inverter 408; the energy storage distribution board 203 and the inverter 408 are connected to the energy storage device 204 in sequence, and the inverter 408 is used for converting alternating current and direct current.
The ship distribution system 200 further includes a daily distribution board 409 and a daily transformer. The left and right propulsion power distribution boards and internal air switches thereof are used for supplying power to the main propulsion motor, the side propulsion motor, the energy storage power distribution board 203 and distributing power to the daily power distribution board 409. The domestic transformer is used for providing safe and proper power for loads except ship propulsion. The number of the inverters 408, the frequency converters 407, the daily distribution board 409 and the daily transformers can be multiple, and the functions are the same.
After the energy storage system is added to the ship power distribution system, the energy storage power distribution board supplies power in two ways, the configuration of a side propulsion motor is reduced, even if the maximum single-point fault occurs, the main propulsion and 2 side propulsion can still be guaranteed, and the capacity of the DP system is maintained. Therefore, the requirement of the ship on the side-push installation space is reduced, and the ship construction cost is saved. Because the energy storage distribution board with the energy storage device is added and is designed into two paths for power supply, the propulsion load on the energy storage distribution board can still ensure the power supply when the maximum single-point fault occurs in the distribution system, and the power supply is seamlessly switched to another distribution board for power supply, thereby ensuring the maintenance of the dynamic positioning capability of the DP system. The use of the energy storage device in the energy storage distribution board enables the DP system to maintain redundancy at the maximum single point of failure with one side push reduction. The installation of a side pushing motor can be reduced while the functions of DP2 and DP3 systems are ensured, and further the ship construction cost is reduced.
EXAMPLE III
To facilitate understanding of the present embodiment, a ship power distribution main system 500 disclosed in the present embodiment is described, as shown in fig. 5.
The main system comprises a ship 501, a dynamic positioning control system 502 and the ship power distribution system 200; the ship power distribution system 200 is arranged on a ship 501, and the ship power distribution system 200 is connected with the dynamic positioning control system 502; the dynamic positioning control system 502 is used for receiving an external signal so that the ship power distribution system 200 controls the running state of the ship 501 according to the requirement of a user; vessel 501 is configured with a secondary dynamic positioning system or a tertiary dynamic positioning system.
The ship power distribution main system provided by the embodiment of the invention has the same technical characteristics as the ship power distribution system provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A marine power distribution system, comprising: a distribution board, a motor, an energy storage device and a generator; the electrical distribution board includes: the system comprises a left propulsion power distribution board, a right propulsion power distribution board and an energy storage power distribution board; the motor comprises an energy storage side-pushing motor; the energy storage distribution board is connected with the left propelling distribution board and is also respectively connected with the right propelling distribution board, the energy storage side propelling motor and the energy storage device; the left propulsion switchboard and the right propulsion switchboard are both connected with the generator;
the generator is used for providing power for the plurality of motors through the power distribution board;
the energy storage device is used for providing a standby power supply when the left propulsion distribution board or the right propulsion distribution board cannot distribute power for the energy storage distribution board so as to ensure the continuity of the power supply provided by the energy storage distribution board to the energy storage side propulsion motor;
the motor is used for controlling the running state of the ship.
2. The marine power distribution system of claim 1, wherein the motor further comprises a left main push motor and a left side push motor;
the left main push motor and the left side push motor are both connected with the left push distribution board;
the left pushing power distribution board is used for distributing power for the left main pushing motor and the left pushing motor respectively.
3. The marine power distribution system of claim 2, wherein the motor further comprises a right main push motor and a right side push motor;
the right main push motor and the right main push motor are both connected with the right push distribution board;
and the right pushing distribution board is used for distributing electric power for the right main pushing motor and the right pushing motor respectively.
4. The marine power distribution system of claim 3, wherein the left propulsion power distribution board has a first switch disposed in the built-in circuit; a second switch is arranged in a built-in circuit of the right propulsion distribution board; a third switch, a fourth switch, a fifth switch and a sixth switch are arranged in a built-in circuit of the energy storage distribution board;
the generator further comprises a first main generator, a second main generator, a third main generator and a fourth main generator;
the first main generator and the second main generator are respectively connected with the left propulsion distribution board;
the first and second main generators for providing power to the left propulsion switchboard;
the third main generator and the fourth main generator are respectively connected with the right propulsion distribution board;
the third and fourth main generators for providing power to the right propulsion switchboard.
5. The marine power distribution system of claim 4, wherein the left main propulsion motor, the left side propulsion motor, the stored energy side propulsion motor, the right main propulsion motor and the right side propulsion motor are all used to control the operating state of the marine vessel when the marine vessel is in the dynamic positioning operating state;
the first switch, the second switch, the third switch, the fifth switch, and the sixth switch are in a closed state, and the fourth switch is in an open state; the left propulsion switchboard is used for distributing power for the energy storage device;
or the first switch, the second switch, the fourth switch, the fifth switch and the sixth switch are in a closed state, and the third switch is in an open state; the right propulsion switchboard is used for distributing power for the energy storage device.
6. The marine power distribution system of claim 5, wherein when the left propulsion distribution board fails, the second switch, the fourth switch, the fifth switch and the sixth switch are controlled to be in a closed state, and the first switch and the third switch are controlled to be in an open state, so that the energy storage side pushing motor, the right main pushing motor and the right side pushing motor are all used for controlling the running state of the marine vessel.
7. The marine power distribution system of claim 6, wherein when the right propulsion distribution board fails, the first switch, the third switch, the fifth switch and the sixth switch are controlled to be in a closed state, and the second switch and the fourth switch are controlled to be in an open state, so that the energy storage side pushing motor, the left main pushing motor and the left side pushing motor are all used for controlling the running state of the marine vessel.
8. The marine power distribution system of claim 7, wherein when the energy storage distribution panel fails, the first switch and the second switch are controlled to be in a closed state, and the third switch and the fourth switch are controlled to be in an open state, so that the left main push motor, the right main push motor and the right main push motor are all used for controlling the running state of the marine vessel.
9. The marine power distribution system of claim 7, further comprising a frequency converter and an inverter;
the distribution board, the frequency converter and the motor are sequentially connected, and the frequency converter is used for adjusting the power supply frequency;
the energy storage distribution board, the inverter and the energy storage device are sequentially connected, and the inverter is used for alternating current and direct current conversion.
10. A marine vessel power distribution master system, comprising a marine vessel, a dynamic positioning control system and a marine vessel power distribution system according to any one of claims 1 to 9;
the ship power distribution system is arranged on the ship and connected with the dynamic positioning control system;
the dynamic positioning control system is used for receiving an external signal so as to enable the ship power distribution system to control the running state of the ship according to the user requirement;
the vessel is configured with a secondary dynamic positioning system or a tertiary dynamic positioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111151711.5A CN113746098A (en) | 2021-09-29 | 2021-09-29 | Ship power distribution system and main system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111151711.5A CN113746098A (en) | 2021-09-29 | 2021-09-29 | Ship power distribution system and main system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113746098A true CN113746098A (en) | 2021-12-03 |
Family
ID=78741776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111151711.5A Pending CN113746098A (en) | 2021-09-29 | 2021-09-29 | Ship power distribution system and main system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113746098A (en) |
-
2021
- 2021-09-29 CN CN202111151711.5A patent/CN113746098A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11139650B1 (en) | Primary node of seafloor observatory network based on constant current power supply | |
| US7544108B2 (en) | Power generation, distribution, and on-board power supply system for low-emissive surface marine (navy) ships of different classes and sizes | |
| JP5465255B2 (en) | System and apparatus for transmitting power to a ship | |
| US20130313894A1 (en) | Blackout Ride-Through System | |
| EP3035477A1 (en) | A power system comprising a central energy storage system and a method of controlling power transfer in a power system | |
| EP3209556B1 (en) | Power system of a floating vessel | |
| KR20090076819A (en) | Marine power distribution and propulsion systems | |
| EP3109964A1 (en) | Dc grid | |
| CN114600331A (en) | Energy storage system and power supply system for marine vessel | |
| WO2015132186A1 (en) | Power system for a floating vessel | |
| EP3944447A1 (en) | Flexible access substation and control method therefor | |
| CN216215903U (en) | Ship power distribution system and main system | |
| CN217036824U (en) | Propeller power switching system and dynamic positioning ship | |
| KR102562066B1 (en) | Redundant power supply system | |
| CN113746098A (en) | Ship power distribution system and main system | |
| EP3203601A1 (en) | Power control system | |
| JP2006271074A (en) | Uninterruptible power supply system | |
| US20230378747A1 (en) | An electric power system | |
| JP2008067491A (en) | Common spare uninterruptible power supply system | |
| CN113991829B (en) | Power supply switching system of propeller | |
| CN111717358A (en) | Double-winding electric propulsion system and ship | |
| CN206389115U (en) | A kind of centralized two-node cluster hot backup for bank electricity system switches high-voltage variable frequency power source | |
| CN114336712B (en) | DP3 ship energy storage closed-loop power system and energy storage battery pack control method thereof | |
| CN110768366B (en) | Hydrogen igniter power supply system suitable for passive advanced pressurized water reactor | |
| CN218022142U (en) | Multi-group electrically propelled ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |