CN114336621A - Gas-electric hybrid power ship energy management system and method - Google Patents
Gas-electric hybrid power ship energy management system and method Download PDFInfo
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- CN114336621A CN114336621A CN202210149145.2A CN202210149145A CN114336621A CN 114336621 A CN114336621 A CN 114336621A CN 202210149145 A CN202210149145 A CN 202210149145A CN 114336621 A CN114336621 A CN 114336621A
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Abstract
The embodiment of the invention discloses a gas-electric hybrid power ship energy management system and method. The system can realize that: by arranging the shore power supply device, the lithium battery power supply device and the gas generator power supply device, and controlling the closing or opening states of the first switch-on switch, the second switch-on switch and the third switch-on switch under different working conditions of the ship, the energy requirements of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device under the working conditions of berthing, sailing and sailing of the ship are realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of ship control, in particular to a gas-electric hybrid power ship energy management system and method.
Background
At present, a hybrid ship electric propulsion system basically adopts a diesel generator set to generate power, exchanges main network power distribution and is matched with a lithium battery to generate power and supply power. However, due to the limited conditions of limited capacity, high price, long service life of the lithium battery and the like of the lithium battery, the existing inland ship only adopts a pure electric mode for sightseeing and touring ships, and cannot adopt the lithium battery as a main power supply to supply power to the ships in a large scale. In addition, the ship using the diesel generator set as the main power supply has low power generation efficiency, is in a low-load working condition for a long time, has low energy utilization rate and high consumption rate, has high carbon emission, and is particularly forbidden to be used in some inland scenic spots. Therefore, in the existing ship power system, an energy management system with high energy utilization rate and meeting the low-carbon emission requirement is urgently needed to be designed.
Disclosure of Invention
The invention provides an energy management system and method for a gas-electric hybrid ship, which are used for meeting the energy supply requirement of the gas-electric hybrid ship, realizing efficient energy utilization and effectively reducing carbon emission.
In a first aspect, an embodiment of the present invention provides a gas-electric hybrid ship energy management system, including: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with the main power grid through the first switch-on/off switch and is used for supplying power to a ship; the lithium battery power supply device is connected with the main power grid through the second switch-off switch and used for supplying power to a ship; the gas generator power supply device is connected with the main power grid through the third switch-on switch and used for supplying power to a ship; the integrated monitoring apparatus is configured to:
under the working condition of ship berthing operation, controlling the first switching-on and switching-off switch to be switched on, and switching off the second switching-on and switching-off switch and the third switching-on and switching-off switch; when the electric quantity of the lithium battery power supply device does not meet a first preset electric quantity, the lithium battery power supply device is charged;
under the working condition of ship berthing, controlling the first switching-on switch to switch on, switching off the second switching-on switch and the third switching-off switch, and performing charge-discharge maintenance on the lithium battery power supply device according to a preset period;
under the ship navigation working condition, controlling the second switching-on switch to be switched on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on;
under the working condition of ship navigation operation, controlling the third switching-on switch to be switched on, and switching off the first switching-on switch and the second switching-off switch; and when the third type of condition occurs in the gas generator power supply device, controlling the third switch-on switch to switch off and the second switch-on switch to switch on, or, when the fourth type of condition occurs in the gas generator power supply device, controlling the second switch-on switch to switch on.
Optionally, the first type of condition at least includes one of insufficient power of the lithium battery, abnormal tripping of the second switch-off switch, abnormal output voltage of the lithium battery power supply device, and abnormal output frequency of the lithium battery power supply device.
Optionally, the second condition at least includes that the electrical load required by the main power grid is greater than one of a preset load of the lithium battery power supply device and an insufficient output power of the lithium battery power supply device during heavy load inquiry.
Optionally, the integrated monitoring apparatus is configured to: and under the second condition, when the electric load required by the main power grid is less than or equal to the first preset multiplying power of the lithium battery power supply device, controlling the gas generator power supply device to be disconnected, and controlling the third switch-on switch to be switched off after disconnection.
Optionally, the third type of condition includes at least one of an abnormal tripping of the third switch-on switch, an abnormal output voltage of the gas generator power supply device, and an abnormal output frequency of the gas generator power supply device.
Optionally, the fourth condition includes at least one of a required electrical load being greater than a preset load of the gas generator power supply and an insufficient output power of the gas generator power supply when the query is heavily loaded.
Optionally, the integrated monitoring apparatus is configured to: and under the fourth condition, when the electric load required by the main power grid is less than or equal to a second preset multiplying power of the power supply device of the gas generator, controlling the power supply device of the lithium battery to be disconnected, and controlling the second switch-on switch to be switched off after disconnection.
Optionally, the integrated monitoring apparatus is further configured to: and under the working condition of ship berthing operation, when the first switch-off and switch-on switch is abnormally tripped, the second switch-off and switch-on switch is controlled to be switched on, so that the lithium battery power supply device replaces the shore power supply device to supply power for the ship.
Optionally, the energy management system of the gas-electric hybrid ship further comprises an alarm device electrically connected with the comprehensive monitoring device; the integrated monitoring apparatus is further configured to: and under the working condition of ship berthing, when the first switching-on/switching-off switch is abnormally tripped, sending an alarm signal to the alarm device.
In a second aspect, an embodiment of the present invention further provides a gas-electric hybrid ship energy management method, where the gas-electric hybrid ship energy management method is executed by a gas-electric hybrid ship energy management system, where the gas-electric hybrid ship energy management system includes: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with the main power grid through the first switch-on/off switch and is used for supplying power to a ship; the lithium battery power supply device is connected with the main power grid through the second switch-off switch and used for supplying power to a ship; the gas generator power supply device is connected with the main power grid through the third switch-on switch and used for supplying power to a ship;
the management method comprises the following steps:
under the working condition of ship berthing operation, controlling the first switching-on and switching-off switch to be switched on, and switching off the second switching-on and switching-off switch and the third switching-on and switching-off switch; when the electric quantity of the lithium battery power supply device does not meet a first preset electric quantity, the lithium battery power supply device is charged;
under the working condition of ship berthing, controlling the first switching-on switch to switch on, switching off the second switching-on switch and the third switching-off switch, and performing charge-discharge maintenance on the lithium battery power supply device according to a preset period;
under the ship navigation working condition, controlling the second switching-on switch to be switched on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on;
under the working condition of ship navigation operation, controlling the third switching-on switch to be switched on, and switching off the first switching-on switch and the second switching-off switch; and when the third type of condition occurs in the gas generator power supply device, controlling the third switch-on switch to switch off and the second switch-on switch to switch on, or, when the fourth type of condition occurs in the gas generator power supply device, controlling the second switch-on switch to switch on.
The invention provides a gas-electric hybrid power ship energy management system and a method, and the gas-electric hybrid power ship energy management system can realize that: by arranging the shore power supply device, the lithium battery power supply device and the gas generator power supply device and controlling the switching-on or switching-off states of the first switching-on switch, the second switching-off switch and the third switching-on switch under different working conditions of the ship, the energy requirements of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device under the berthing working condition, the sailing working condition and the sailing working condition of the ship are realized, because the power supply of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device is reasonably matched, the energy utilization rate can be improved while the energy supply of the ship is ensured, and only the first type condition and the second type condition of the lithium battery under the sailing working condition of the ship occur, and the gas generator power supply device is started to supply power under the sailing working condition of the ship, carbon emissions can be effectively reduced while ensuring the energy supply of the ship. And the lithium battery power supply device can increase the electric energy for the ship and simultaneously carry out peak clipping and valley filling on the power grid, thereby playing the role of energy saving, and effectively increasing the conversion rate of energy.
Drawings
Fig. 1 is a block diagram of a gas-electric hybrid ship energy management system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gas-electric hybrid vessel energy management system according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for managing energy of a gas-electric hybrid ship according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a block diagram of a gas-electric hybrid ship energy management system provided in an embodiment of the present invention. Referring to fig. 1, the gas-electric hybrid vessel energy management system includes: the system comprises a shore power supply device 10, a lithium battery power supply device 20, a gas generator power supply device 30, a first switch-on switch 40, a second switch-on switch 50, a third switch-on switch 60, a main power grid 70 and a comprehensive monitoring device 80; the shore power supply device 10 is connected with a main power grid 70 through a first switch-on/off switch 40 and is used for supplying power to the ship 100; the lithium battery power supply device 20 is connected with the main power grid 70 through the second opening and closing switch 50 and is used for supplying power to the ship 100; the gas generator power supply device 30 is connected with the main power grid 70 through a third opening and closing switch 60 and is used for supplying power to the ship 100;
the integrated monitoring apparatus 80 is configured to:
under the working condition of ship berthing operation, controlling the first switching-on switch 40 to be switched on, and switching off the second switching-on switch 50 and the third switching-off switch 60; when the power of the lithium battery power supply device 20 does not meet the first preset power, the lithium battery power supply device 20 is charged;
under the working condition of ship berthing, controlling the first switching-on switch 40 to switch on, switching off the second switching-on switch 50 and the third switching-off switch 60, and performing charging and discharging maintenance on the lithium battery power supply device 20 according to a preset period;
under the ship navigation working condition, controlling the second switching-on switch 50 to be switched on, and switching off the first switching-on switch 40 and the third switching-off switch 60; when the lithium battery power supply device 20 has a first type of condition, the third switch-on switch 60 is controlled to be switched on and the second switch-off switch 50 is controlled to be switched off, or when the lithium battery power supply device 20 has a second type of condition, the third switch-on switch 60 is controlled to be switched on;
under the working condition of ship navigation operation, controlling the third switching-on switch 60 to switch on, and switching off the first switching-on switch 40 and the second switching-off switch 50; and when the third type of condition occurs in the gas generator power supply device 30, the third switch-off switch 60 is controlled to be switched off and the second switch-off switch 50 is controlled to be switched on, or, when the fourth type of condition occurs in the gas generator power supply device 30, the second switch-off switch 50 is controlled to be switched on.
The shore power supply device 10 can be a shore power supply; the lithium battery power supply 20 may be a lithium battery pack, such as 1 pack of 300KWH lithium battery packs; the gas generator power supply 30 may be a gas generator, for example, a 1 340KW gas generator. The integrated monitoring device 80 may be a PLC controller. The integrated monitoring device 80 can remotely control the opening or closing of a first opening and closing switch of the shore power supply device 10, the opening or closing of a second opening and closing switch of the lithium battery power supply device, and the opening or closing of a third opening and closing switch of the gas generator power supply device through a marine Maintenance System (PMS).
The energy management system of the gas-electric hybrid power ship has four working modes, which are respectively as follows: a berthing mode (i.e., berthing operating condition), a sailing mode (i.e., sailing operating condition), and a sailing mode (i.e., sailing operating condition). The integrated monitoring device 80 can select the operation mode of the ship according to specific situations, for example, when the ship is berthed on the shore, the berthing mode is selected; when the ship is berthed and works, selecting a berthing operation mode; when the ship navigates, selecting a navigation mode; when the ship sails for operation, a sailing operation mode is selected.
Wherein, under the operation operating mode that boats and ships berth, lithium cell power supply unit 20 still can be connected with bank electricity power supply unit 10 through the switch, and when lithium cell power supply unit 20 electric quantity did not satisfy first predetermined electric quantity, comprehensive monitoring device 80 can be through control switch closure control bank electricity power supply unit 10 for its charges. The first preset electric quantity may be 95%, and the specific value may be set according to an actual situation, which is not specifically limited herein.
The lithium battery power supply device 20 can be further connected with the gas generator power supply device 30 through a switch, and when the electric quantity of the lithium battery power supply device 20 is relatively low, the comprehensive monitoring device 80 can control the gas generator power supply device 30 to charge the lithium battery power supply device through the control switch.
The preset period may be two weeks, three weeks, etc., and the specific value may be set according to an actual situation, which is not specifically limited herein.
In the technical scheme of the embodiment, the implementation process of the gas-electric hybrid power ship energy management system is as follows: referring to fig. 1, when the ship requires an on-shore berthing operation, the integrated monitoring apparatus 80 selects an on-shore berthing operation mode. Under the operation mode of berthing, comprehensive monitoring device 80 controls first switch-on switch 40 to close, and second switch-on switch 50 and third switch-on switch 60 separating brake for bank electricity power supply unit 10 reduces the lithium cell use for boats and ships power supply on the one hand, improves the life of lithium cell, avoids using gas generator power supply unit power supply when the another side is leaned on the bank, reduces the carbon emission, and is energy-concerving and environment-protective. In the berthing operation mode, the comprehensive monitoring device 80 monitors the remaining power (State of Charge, SCO) of the lithium battery power supply device 20 in real time, and controls the shore power supply device 10 to Charge the lithium battery power supply device 20 when the SOC of the lithium battery power supply device 20 is lower than a first preset power, so that the service life of the lithium battery can be protected, and on the other hand, when the shore power supply device 10 is abnormal and cannot supply power, the power required by the berthing operation of the ship can be continuously maintained due to sufficient power of the lithium battery, thereby further fully ensuring the power supply of the ship. When the ship needs to be berthed ashore, the integrated monitoring device 80 selects a berthing mode. Under the working condition of berthing, the comprehensive monitoring device 80 controls the first switching-on switch 40 to be switched on, and the second switching-on switch 50 and the third switching-off switch 60 to be switched off, so that the shore power supply device 10 supplies power to the ship. And under the working condition of parking, the comprehensive monitoring device 80 performs charging and discharging maintenance on the lithium battery power supply device 20 according to a preset period. When the ship needs to navigate, the integrated monitoring device 80 selects a navigation condition mode. Under the sailing working condition mode, the comprehensive monitoring device 80 controls the second switching-on switch 50 to be switched on, and the first switching-on switch 40 and the third switching-off switch 60 to be switched off, so that the lithium battery power supply device 20 supplies power to the ship, energy required by ship sailing can be met, and carbon emission can be reduced because the lithium battery is clean energy; when the comprehensive monitoring device 80 detects that the first-class condition occurs in the lithium battery power supply device 20, the third switch-on switch 60 is controlled to be switched on, the second switch-off switch 50 is controlled to be switched off, the gas generator power supply device 30 is controlled to start power supply, and meanwhile, the lithium battery power supply device 20 is controlled to stop supplying power to the ship, so that the gas generator power supply device 30 replaces the lithium battery power supply device 20 to supply power to the ship, and the power required by normal navigation of the ship can be guaranteed when the first-class condition occurs in the navigation process of the ship; or, when the second kind of situation occurs in the lithium battery power supply device 20, the third switch-on switch 60 is controlled to be switched on, and the gas generator power supply device 30 is controlled to start power supply, so that the gas generator power supply device 30 and the lithium battery power supply device 20 supply power to the ship in parallel, and the power required by the ship in normal navigation can be ensured when the second kind of situation occurs in the ship navigation process. When the ship needs a sailing operation, the integrated monitoring device 80 selects a sailing operation mode. Under the navigation operation working condition mode, the comprehensive monitoring device 80 controls the third switching-on switch 60 to be switched on, and the first switching-off switch 40 and the second switching-off switch 50 are switched off; when the third type of situation occurs in the gas generator power supply device 30, the third switch-off switch 60 is controlled to be switched off, the second switch-off switch 50 is controlled to be switched on, the lithium battery power supply device 20 is controlled to start power supply, and meanwhile, the gas generator power supply device 30 is controlled to stop supplying power to the ship, so that the lithium battery power supply device 20 replaces the gas generator power supply device 30 to supply power to the ship, and the power required by normal navigation of the ship can be ensured when the third type of situation occurs in the navigation process of the ship; or, when the fourth type of situation occurs in the gas generator power supply device 30, the second switch-on switch 40 is controlled to be switched on, and the lithium battery power supply device 20 is controlled to start power supply, so that the gas generator power supply device 30 and the lithium battery power supply device 20 supply power to the ship in parallel, and the power required by normal navigation of the ship can be ensured when the fourth type of situation occurs in the navigation process of the ship. In the process that the lithium battery power supply device 20 and the gas generator power supply device 30 are parallel, the gas generator power supply device 30 serves as a main power supply to supply power, and the lithium battery power supply device 20 is matched with the ship power grid to perform an energy-saving effect on peak clipping and valley filling, so that the energy distribution of the whole ship is optimized, the efficient energy conversion rate is realized, and the carbon emission is effectively reduced. Therefore, the energy requirements of the ship on the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device under the ship berthing operation working condition, the berthing working condition, the sailing working condition and the sailing working condition can be realized through the system, the energy utilization rate can be improved while the energy supply of the ship is ensured due to reasonable matching of the power supply of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device, only the first kind of situation and the second kind of situation occur to the lithium battery under the ship sailing working condition, and the power supply of the gas generator power supply device is started under the ship sailing working condition, so that the carbon emission can be effectively reduced while the energy supply of the ship is ensured.
The technical scheme of this embodiment, through providing a gas-electric hybrid ship energy management system, this gas-electric hybrid ship energy management system includes: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with a main power grid through a first switch-on and switch-off switch and used for supplying power to the ship; the lithium battery power supply device is connected with the main power grid through a second switch-off switch and used for supplying power to the ship; the gas generator power supply device is connected with the main power grid through a third switch-on switch and used for supplying power to the ship; the integrated monitoring device is configured to: under the working condition of ship berthing operation, controlling a first switching-on switch to switch on, and switching off a second switching-on switch and a third switching-off switch; when the electric quantity of the lithium battery power supply device does not meet the first preset electric quantity, the lithium battery power supply device is charged; under the working condition of ship berthing, controlling the first switching-on switch to switch on, and the second switching-on switch and the third switching-off switch to switch off, and performing charging and discharging maintenance on the lithium battery power supply device according to a preset period; under the ship navigation working condition, controlling the second switching-on switch to switch on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on; under the working condition of ship navigation operation, controlling the third switch-on switch to switch on, and switching off the first switch-on switch and the second switch-on switch; and when the third type of condition occurs in the gas generator power supply device, the third switch-off switch is controlled to be switched off and the second switch-off switch is controlled to be switched on, or when the fourth type of condition occurs in the gas generator power supply device, the second switch-off switch is controlled to be switched on. The energy management system of the gas-electric hybrid power ship can realize that: by arranging the shore power supply device, the lithium battery power supply device and the gas generator power supply device and controlling the switching-on or switching-off states of the first switching-on switch, the second switching-off switch and the third switching-on switch under different working conditions of the ship, the energy requirements of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device under the berthing working condition, the sailing working condition and the sailing working condition of the ship are realized, because the power supply of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device is reasonably matched, the energy utilization rate can be improved while the energy supply of the ship is ensured, and only the first type condition and the second type condition of the lithium battery under the sailing working condition of the ship occur, and the gas generator power supply device is started to supply power under the sailing working condition of the ship, carbon emissions can be effectively reduced while ensuring the energy supply of the ship. And the lithium battery power supply device can increase the electric energy for the ship and simultaneously carry out peak clipping and valley filling on the power grid, thereby playing the role of energy saving, and effectively increasing the conversion rate of energy.
On the basis of the above technical solution, optionally, the first type of condition at least includes one of insufficient electric quantity of the lithium battery, abnormal tripping of the second switch-off switch, abnormal output voltage of the lithium battery power supply device, and abnormal output frequency of the lithium battery power supply device.
Specifically, under boats and ships navigation operating mode, when this kind of situation of lithium cell electric quantity is not enough appeared, specific energy management mode is: under the ship navigation working condition, the second switch-on switch 50 is switched on, and the first switch-on switch 40 and the third switch-on switch 60 are switched off, so that the lithium battery power supply device 20 supplies power to the ship. If the comprehensive monitoring device 80 detects that the electric quantity SOC of the lithium battery power supply device 20 is lower than the second preset electric quantity, the comprehensive monitoring device 80 controls the third switch-on switch 60 to be switched on and the second switch-off switch 50 to be switched off, and simultaneously controls the gas generator power supply device 30 to be started. The specific control process is as follows: if the gas generator fails to start, a starting failure alarm is sent out; if the gas generator is successfully started and the voltage is established, the comprehensive monitoring device 80 sends a gas generator synchronous command, the third switch-on switch 60 is automatically and synchronously switched on, so that the gas generator control device 30 is electrically connected with the main power grid 70 through the third switch-on switch 60, the comprehensive monitoring device 80 automatically adjusts the rotating speed of the gas generator, transfers the power load output by the lithium battery power supply device 20 to the gas generator power supply device 30, switches the lithium battery power supply device 20 from the discharging mode to the charging mode, namely controls the second switch-on switch 50 to be switched off, so that the lithium battery stops the discharging mode, controls a switch (not shown) between the lithium battery power supply device 20 and the gas generator power supply device 30 to be switched on, switches the lithium battery from the discharging mode to the charging mode, and supplies power to the whole ship by the gas generator power supply device 30 and charges the lithium battery power supply device 20, when the SOC of the lithium battery power supply device is charged to the third preset electric quantity, the comprehensive monitoring device 80 automatically switches back to the lithium battery power supply device 20 for power supply, i.e. controls the second switch-on switch 50 to switch on, and controls the third switch-on switch 60 to switch off. The second preset electric quantity may be 20%, the third preset electric quantity may be 70%, and the specific value may be set according to an actual situation, which is not specifically limited herein.
Under the ship navigation operating mode, when the second switch-off and switch-off state is abnormal, the specific energy management mode is as follows: under the ship navigation working condition, the second switch-on switch 50 is switched on, and the first switch-on switch 40 and the third switch-on switch 60 are switched off, so that the lithium battery power supply device 20 supplies power to the ship. When the second switch-off switch is abnormally tripped, that is, the lithium battery power supply device 20 is abnormally tripped, and the main power grid loses power, the comprehensive monitoring device 80 controls the third switch-off switch 60 to be switched on and the second switch-off switch 50 to be switched off, and simultaneously controls the gas generator power supply device 30 to start and sends out navigation operating mode fault alarm information. The specific control process is as follows: and if the gas generator fails to start, a starting failure alarm is sent out. If the gas generator is started successfully, after the voltage is established, the comprehensive monitoring device 80 sends out a gas generator synchronous command, and the third opening and closing switch 60 is automatically and synchronously closed, so that the gas generator control device 30 is electrically connected with the main power grid 70 through the third opening and closing switch 60; if the third switch-on switch 60 fails to switch on, the comprehensive monitoring device 80 sends out a switch-on failure alarm, and the power grid recovers power supply after successful switch-on.
The electricity output by the lithium battery is ac electricity, and the main grid is ac electricity, so the dc electricity output by the lithium battery power supply device 20 needs to be converted by the dc-ac conversion device and then output to the main grid. Similarly, the output of the gas generator power supply device 30 is an alternating current, and when the gas generator power supply device 30 charges the lithium battery power supply device 20, the alternating current output by the gas generator power supply device 30 needs to be converted by an alternating current-to-direct current device and then is transmitted to the lithium battery power supply device 20. The direct current-alternating current or alternating current-direct current conversion equipment can be a charging/inverting integrated machine, wherein alternating current input or output by the charging/inverting integrated machine has certain frequency, and the power supply of the lithium battery power supply device can be influenced when the frequency and/or the voltage are abnormal. Therefore, under the ship sailing working condition, when the output voltage and/or the frequency of the lithium battery power supply device are abnormal, the specific energy management mode is as follows: generally, the output voltage range of a lithium battery power supply device is set as follows: delaying for 10s when the time is greater than or equal to 106%, and delaying for 10s when the time is less than or equal to 90%; the output frequency range is set as: when the time is more than or equal to 105 percent, or less than or equal to 95 percent, the time is delayed for 10 s. Under the ship sailing condition, if the output voltage and/or the frequency of the lithium battery power supply device are abnormal, the comprehensive monitoring device 80 controls the third switch-on switch 60 to be switched on and the second switch-off switch 50 to be switched off, and simultaneously controls the gas generator power supply device 30 to be started. The specific process is as follows: after the voltage is established, the comprehensive monitoring device 80 sends a power supply disconnection command of the lithium battery power supply device on the grid and controls the second switch-on switch 50 to switch off, and after the second switch-on switch 50 switches off, the comprehensive monitoring device 80 sends a switch-on command of the third switch-on switch 60 and a power supply stop command of the lithium battery power supply device 20, so that the third switch-on switch 60 is switched on, and the gas generator power supply device 30 is switched on to supply power to the main grid 70.
Optionally, the second type of condition includes at least one of a required electrical load of the main grid being greater than a preset load of the lithium battery power supply device and an insufficient output power of the lithium battery power supply device during a heavy inquiry.
Specifically, under boats and ships navigation operating mode, when the required power consumption load of main electric wire netting is greater than this kind of situation of load of presetting of lithium cell power supply unit, concrete energy management mode is: under the ship navigation working condition, the second switch-on switch 50 is switched on, and the first switch-on switch 40 and the third switch-on switch 60 are switched off, so that the lithium battery power supply device 20 supplies power to the ship. When the required electrical load of the main power grid is greater than the preset load of the lithium battery power supply device 20, the comprehensive monitoring device 80 controls the third switch-on switch 60 to switch on and simultaneously controls to start the gas generator power supply device 30, so that the gas generator power supply device 30 and the lithium battery power supply device 20 supply power to the ship in parallel, and the load is automatically distributed.
Specifically, under the boats and ships navigation operating mode, when this kind of situation of lithium battery power supply unit's output is not enough when heavy inquiry appears, specific energy management mode is: under the ship navigation working condition, the second switch-on switch 50 is switched on, and the first switch-on switch 40 and the third switch-on switch 60 are switched off, so that the lithium battery power supply device 20 supplies power to the ship. When the frequency converter is randomly pushed to carry out heavy-load inquiry, if the output power of the on-grid lithium battery power supply device is larger than or equal to the power (for example 112KW) required by the heavy-load inquiry, a starting permission signal is sent out; if the surplus capacity of the on-grid lithium battery power supply device is insufficient, the on-grid lithium battery power supply device can not meet the requirement of propulsion operation, the third switch-on switch 60 is controlled to be switched on, namely, the gas generator power supply device is started to be connected to the main bus in parallel, and the gas generator power supply device and the lithium battery power supply device are connected in parallel to operate to send a propulsion permission starting signal.
Optionally, the integrated monitoring apparatus is configured to: and under the second condition, when the electric load required by the main power grid is less than or equal to the first preset multiplying power of the lithium battery power supply device, controlling the gas generator power supply device to be disconnected, and controlling the third switch-on switch to be switched off after disconnection.
The first preset multiplying power can be 70%, and the specific numerical value can be set according to the actual situation, which is not specifically limited herein.
Specifically, when the second type of situation occurs, the comprehensive monitoring device controls the third switch-on switch to be switched on, so that the gas generator power supply device 30 and the lithium battery power supply device 20 supply power to the ship in parallel. After a period of parallel operation, when the power load required by the main power grid is less than or equal to the first preset multiplying power of the lithium battery power supply device, the power output by the lithium battery power supply device 20 can meet the load of the main power grid at the moment, so the integrated monitoring device 80 controls the gas generator power supply device 30 to be disconnected, and controls the third switch-on switch 60 to be switched off after the disconnection, so that the gas generator power supply device 30 stops supplying power, the lithium battery power supply device 20 supplies power, and the carbon emission is reduced while the power supply of the ship is ensured.
Optionally, the third type of condition includes at least one of an abnormal tripping of the third switch-on switch, an abnormal output voltage of the gas generator power supply device, and an abnormal output frequency of the gas generator power supply device.
Specifically, under boats and ships navigation operation operating mode, when this kind of situation of third switch-on switch abnormal tripping appears, concrete energy management mode is: under the working condition of ship navigation operation, the third switch-on switch 60 is switched on, and the first switch-on switch 40 and the second switch-off switch 50 are switched off, so that the power supply device 30 of the gas generator supplies power to the ship. When the third switch-on switch is tripped abnormally, that is, the power supply device of the gas generator is tripped in a fault, and the main grid loses power, the comprehensive monitoring device 80 controls the third switch-on switch 60 to be switched off and the second switch-on switch 50 to be switched on, so that the lithium battery power supply device 20 replaces the power supply device 30 of the gas generator to supply power to the ship. The specific control flow is as follows: the second switch-off and switch-on switch is in a switch-off state; the charging/inversion all-in-one machine is ready, has no fault and is in a stop state; the integrated monitoring device automatically sends a 'discharge mode' signal to the charging/inverting integrated machine; the charging/inversion all-in-one machine feeds back a discharging mode signal to an alternating current distribution board, and a charging/inversion all-in-one machine discharging mode indicator lamp of the distribution board is lightened; the integrated monitoring device automatically sends a starting command to the charging/inverting integrated machine; the charging/inversion integrated machine feeds back an operation signal, and an operation indicator lamp of the distribution board is lightened; the integrated monitoring device automatically sends a 'parallel operation' command to the charging/inverting integrated machine; and the charging/inverting integrated machine executes parallel operation control, feeds back a second switch-on switch-on signal to a distribution board switch-on second switch-on switch, and the lithium battery power supply device supplies power to the distribution board.
Specifically, under the boats and ships navigation operation operating mode, when this kind of situation of gas generator power supply unit output voltage or frequency anomaly appears, specific energy management mode is: generally, the output voltage range of the gas generator power supply device is set as follows: delaying for 10s when the time is greater than or equal to 106%, and delaying for 10s when the time is less than or equal to 90%; the output frequency range is set as: when the time is more than or equal to 105 percent, or less than or equal to 95 percent, the time is delayed for 10 s. Under the working condition of ship navigation operation, the third switch-on switch 60 is switched on, and the first switch-on switch 40 and the second switch-off switch 50 are switched off, so that the power supply device 30 of the gas generator supplies power to the ship. If the output voltage and/or frequency of the gas generator power supply device is abnormal, the integrated monitoring device 80 controls the second switch-on switch 50 to be switched on and the third switch-on switch 60 to be switched off, and simultaneously controls and starts the gas generator power supply device 20. The specific process is as follows: the gas generator power supply device 20 is started, after voltage is built, the comprehensive monitoring device 80 sends a switching-off command of a third switch-on switch 60 in a power grid and controls the second switch-on switch 50 to switch off, after the third switch-on switch 60 is switched off, the comprehensive monitoring device 80 sends a parallel operation command to the charging/inverting integrated machine, the charging/inverting integrated machine executes parallel operation control and feeds back a switching-on signal of the second switch-on switch to a switch-on second switch-on switch of a distribution panel, and the lithium battery power supply device discharges to a main busbar of the distribution panel. The integrated monitoring device 80 delays for 3 minutes to automatically stop the power supply device of the gas generator.
Optionally, the fourth condition includes at least one of a required electrical load of the main grid being greater than a predetermined load of the gas generator power supply and an insufficient output power of the gas generator power supply upon a heavy inquiry.
Specifically, under boats and ships navigation operation operating mode, when the required power consumption load is greater than this kind of situation of load of predetermineeing of gas generator power supply unit, concrete energy management mode is: under the working condition of ship navigation operation, the third switch-on switch 60 is switched on, and the first switch-on switch 40 and the second switch-off switch 50 are switched off, so that the power supply device 30 of the gas generator supplies power to the ship. When the required electrical load of the main power grid is greater than the preset load of the gas generator power supply device, the comprehensive monitoring device 80 controls the second switch-on switch 50 to switch on and simultaneously controls to start the lithium battery power supply device 20, so that the lithium battery power supply device 20 and the gas generator power supply device 30 supply power to the ship in parallel, and the load is automatically distributed.
Specifically, under the working condition of ship navigation operation, when the output power of the gas generator power supply device is insufficient during heavy inquiry, the specific energy management mode is as follows: under the working condition of ship navigation operation, the third switch-on switch 60 is switched on, and the first switch-on switch 40 and the second switch-off switch 50 are switched off, so that the power supply device 30 of the gas generator supplies power to the ship. When any propulsion frequency converter is subjected to heavy load inquiry, if the output power of the on-grid gas generator power supply device is larger than or equal to the power (for example 112KW) required by the heavy load inquiry, a starting permission signal is sent; if the surplus capacity of the on-grid gas generator power supply device is insufficient, the on-grid gas generator power supply device cannot meet the requirement of propulsion operation, the second switch-on switch 50 is controlled to be switched on, namely the gas generator power supply device is started to be connected to the main bus in parallel, the gas generator power supply device and the lithium battery power supply device are connected in parallel to operate, and a propulsion permission starting signal is sent.
Optionally, the integrated monitoring apparatus is configured to: and under the fourth condition, when the electric load required by the main power grid is less than or equal to the second preset multiplying power of the power supply device of the gas generator, controlling the power supply device of the lithium battery to be disconnected, and controlling the second switch-on switch to be switched off after disconnection.
The second preset multiplying power can be 70%, and the specific numerical value can be set according to the actual situation, which is not specifically limited herein.
Specifically, when the fourth condition occurs, the comprehensive monitoring device controls the second switch-on switch to be switched on, so that the lithium battery power supply device 20 and the gas generator power supply device 30 supply power to the ship in parallel. After a period of parallel operation, when the power load required by the main power grid is less than or equal to the second preset multiplying power of the gas generator power supply device, the power output by the gas generator power supply device 30 can meet the load of the main power grid at the moment, so that the comprehensive monitoring device 80 controls the lithium battery power supply device to be disconnected, and controls the second switch-on switch to be switched off after the disconnection. And the lithium battery power supply device is switched from the discharging mode to the charging mode, that is, the switch between the lithium battery power supply device and the gas generator power supply device is controlled to be closed, so that the gas generator power supply device 30 charges the lithium battery power supply device while supplying power to the whole ship.
Optionally, the integrated monitoring apparatus is further configured to: under the working condition of ship berthing operation, when the first switch-off and switch-on switch is abnormally tripped, the second switch-off and switch-on switch is controlled, so that the lithium battery power supply device replaces a shore power supply device to supply power to the ship, and the ship berthing operation can be normally carried out.
Optionally, the energy management system of the gas-electric hybrid ship further comprises an alarm device 90 electrically connected with the comprehensive monitoring device 80; the integrated monitoring apparatus 80 is further configured to: and under the working condition of ship berthing, when the first switch-off and switch-on switch is abnormally tripped, sending an alarm signal to the alarm device 90.
Wherein, the alarm device can be an acousto-optic alarm sensor.
In addition, under the working condition of berthing, the comprehensive monitoring device 80 carries out charging and discharging maintenance operation on the lithium battery power supply device according to a preset period, and sends alarm information such as 'lithium battery maintenance' and the like so as to remind a crew of carrying out charging and discharging maintenance on the lithium battery. After the maintenance is completed, the crew presses the "maintenance complete" button for lithium battery charging and discharging maintenance, and the comprehensive supervision device 80 counts the maintenance time of the lithium battery again. Wherein, the charge-discharge maintenance operation of lithium battery power supply unit can be carried out under semi-automatic or manual mode, and specific maintenance flow can be: firstly, the second switch-off and switch-on switch is in a switch-off state; manually pressing a charge-discharge maintenance button on the touch screen; the integrated monitoring device automatically opens a first switch-off and switch-on switch; the integrated monitoring device switches the charging mode signal to the discharging mode and sends the discharging mode signal to the charging/inverting integrated machine; the charging/inversion all-in-one machine feeds back a discharging mode signal to an alternating current distribution board, and a charging/inversion all-in-one machine discharging mode indicator lamp of the distribution board is lightened; the integrated supervisory device 80 automatically sends a start command to the charging/inverting all-in-one machine; the charging/inversion integrated machine feeds back an operation signal, and an operation indicator lamp of the distribution board is lightened; the integrated supervisory device 80 automatically sends a 'parallel operation' command to the charging/inverting all-in-one machine; and the charging/inverting integrated machine executes parallel operation control, feeds back a second switch-on switch-on signal to a distribution board switch-on second switch-on switch, and the lithium battery power supply device supplies power to the whole ship for discharge maintenance. When the lithium battery discharges to 70%, the distribution board sends a stop command to the charging/inverting integrated machine; and the charging/inverting integrated machine feeds back a second switch-off switch switching-off signal to a distribution board switch-off second switch-off switch. The integrated supervisory device 80 automatically closes the first switch-on and switch-off switch; the distribution board sends a charging mode signal to the charging/inverting integrated machine; the charging/inversion integrated machine feeds back a charging mode signal to the alternating current distribution board, and a charging/inversion integrated machine charging mode indicator lamp of the distribution board is lightened; the distribution board sends a starting command to the charging/inverting integrated machine; and the charging/inverting integrated machine feeds back a second switch-on switch switching-on signal to a distribution board to switch on the second switch-on switch, and the distribution board charges the lithium battery power supply device. The charging/inversion integrated machine feeds back an operation signal, and an operation indicator lamp of the distribution board is lightened; when the charging electric quantity reaches 99%, the distribution board sends a stop command to the charging/inverting integrated machine; and the charging/inverting integrated machine feeds back a second switch-off switch switching-off signal to the distribution board switch-off second switch-off switch (if the disconnection is finished, a stop command needs to be automatically sent after the disconnection is finished).
As an implementation manner, fig. 2 is a schematic structural diagram of an energy management system of a gas-electric hybrid ship provided in an embodiment of the present invention. Referring to fig. 2, the shore power supply device 10 is connected to a main power grid 70 through a first switching-on/off switch 40, the lithium battery power supply device 20 is connected to the main power grid 70 through a second switching-on/off switch 50, the gas generator power supply device 30 is connected to the main power grid 70 through a third switching-on/off switch 60, and a plurality of power loads are further connected to the main power grid 70, for example, the switches QF201 to QF208 are respectively connected to one power load, the switches QF209 to QF210 are connected to one power load, the switches QF211 to QF212 are connected to one power load, the switch QF213 is connected to one power load, and the switches QF214 to QF215 are connected to one power load; the propeller 1 is connected to the main power grid 70 through the ac-dc converter and then through the switch QF4, and is used for taking electricity from the main power grid 70. In addition, a set of redundant propellers 2 is arranged to be connected with the main power grid 70 through an alternating current-direct current converter and a switch QF5, and used for getting electricity from the main power grid 70 and ensuring the stability and reliability of the ship propulsion system so as to ensure the power supply of the ship. In addition, in order to fully guarantee the power supply of the ship, a standby power supply UPS is also arranged. The specific number, setting, and the like of the electrical loads depend on the actual conditions of the ship, and are not specifically limited herein.
Fig. 3 is a flowchart of an energy management method for a gas-electric hybrid ship according to a third embodiment of the present invention. The third embodiment of the invention provides a gas-electric hybrid power ship energy management method, and referring to fig. 3, the management method specifically comprises the following steps:
According to the technical scheme of the embodiment, the method is executed by a gas-electric hybrid power ship energy management system, and the gas-electric hybrid power ship energy management system comprises: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with a main power grid through a first switch-on and switch-off switch and used for supplying power to the ship; the lithium battery power supply device is connected with the main power grid through a second switch-off switch and used for supplying power to the ship; the gas generator power supply device is connected with the main power grid through a third switch-on switch and used for supplying power to the ship; the management method comprises the following steps: under the working condition of ship berthing operation, controlling a first switching-on switch to switch on, and switching off a second switching-on switch and a third switching-off switch; when the electric quantity of the lithium battery power supply device does not meet the first preset electric quantity, the lithium battery power supply device is charged; under the working condition of ship berthing, controlling the first switching-on switch to switch on, and the second switching-on switch and the third switching-off switch to switch off, and performing charging and discharging maintenance on the lithium battery power supply device according to a preset period; under the ship navigation working condition, controlling the second switching-on switch to switch on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on; under the working condition of ship navigation operation, controlling the third switch-on switch to switch on, and switching off the first switch-on switch and the second switch-on switch; and when the third type of condition occurs in the gas generator power supply device, the third switch-off switch is controlled to be switched off and the second switch-off switch is controlled to be switched on, or when the fourth type of condition occurs in the gas generator power supply device, the second switch-off switch is controlled to be switched on. The energy management method for the gas-electric hybrid power ship can realize the following steps: by arranging the shore power supply device, the lithium battery power supply device and the gas generator power supply device and controlling the switching-on or switching-off states of the first switching-on switch, the second switching-off switch and the third switching-on switch under different working conditions of the ship, the energy requirements of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device under the berthing working condition, the sailing working condition and the sailing working condition of the ship are realized, because the power supply of the shore power supply device and/or the lithium battery power supply device and/or the gas generator power supply device is reasonably matched, the energy utilization rate can be improved while the energy supply of the ship is ensured, and only the first type condition and the second type condition of the lithium battery under the sailing working condition of the ship occur, and the gas generator power supply device is started to supply power under the sailing working condition of the ship, carbon emissions can be effectively reduced while ensuring the energy supply of the ship. And the lithium battery power supply device can increase the electric energy for the ship and simultaneously carry out peak clipping and valley filling on the power grid, thereby playing the role of energy saving, and effectively increasing the conversion rate of energy.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A gas-electric hybrid marine energy management system, comprising: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with the main power grid through the first switch-on/off switch and is used for supplying power to a ship; the lithium battery power supply device is connected with the main power grid through the second switch-off switch and used for supplying power to a ship; the gas generator power supply device is connected with the main power grid through the third switch-on switch and used for supplying power to a ship; the integrated monitoring apparatus is configured to:
under the working condition of ship berthing operation, controlling the first switching-on and switching-off switch to be switched on, and switching off the second switching-on and switching-off switch and the third switching-on and switching-off switch; when the electric quantity of the lithium battery power supply device does not meet a first preset electric quantity, the lithium battery power supply device is charged;
under the working condition of ship berthing, controlling the first switching-on switch to switch on, switching off the second switching-on switch and the third switching-off switch, and performing charge-discharge maintenance on the lithium battery power supply device according to a preset period;
under the ship navigation working condition, controlling the second switching-on switch to be switched on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on;
under the working condition of ship navigation operation, controlling the third switching-on switch to be switched on, and switching off the first switching-on switch and the second switching-off switch; and when the third type of condition occurs in the gas generator power supply device, controlling the third switch-on switch to switch off and the second switch-on switch to switch on, or, when the fourth type of condition occurs in the gas generator power supply device, controlling the second switch-on switch to switch on.
2. The gas-electric hybrid power ship energy management system according to claim 1, wherein the first type of condition at least includes one of an insufficient power of a lithium battery, an abnormal tripping of the second switch-off switch, an abnormal output voltage of the lithium battery power supply device, and an abnormal output frequency of the lithium battery power supply device.
3. A gas-electric hybrid marine vessel energy management system according to claim 1, wherein said second type of condition comprises at least one of a required electrical load on the main grid being greater than a predetermined load on the lithium battery powered device and an insufficient output power of the lithium battery powered device upon a heavy load query.
4. The gas-electric hybrid marine vessel energy management system of claim 3, wherein said integrated monitoring device is configured to: and under the second condition, when the electric load required by the main power grid is less than or equal to the first preset multiplying power of the lithium battery power supply device, controlling the gas generator power supply device to be disconnected, and controlling the third switch-on switch to be switched off after disconnection.
5. The gas-electric hybrid marine vessel energy management system of claim 1, wherein the third type of condition comprises at least one of an abnormal tripping of the third switch-on switch, an abnormal output voltage of the gas-generator power supply, and an abnormal output frequency of the gas-generator power supply.
6. The gas-electric hybrid marine vessel energy management system according to claim 1, wherein the fourth type of condition includes at least one of a required electrical load being greater than a predetermined load of the gas-generator power supply and an insufficient output power of the gas-generator power supply upon a heavy inquiry.
7. The gas-electric hybrid marine vessel energy management system of claim 6, wherein said integrated monitoring device is configured to: and under the fourth condition, when the electric load required by the main power grid is less than or equal to a second preset multiplying power of the power supply device of the gas generator, controlling the power supply device of the lithium battery to be disconnected, and controlling the second switch-on switch to be switched off after disconnection.
8. The gas-electric hybrid marine vessel energy management system of claim 1, wherein said integrated monitoring device is further configured to: and under the working condition of ship berthing operation, when the first switch-off and switch-on switch is abnormally tripped, the second switch-off and switch-on switch is controlled to be switched on, so that the lithium battery power supply device replaces the shore power supply device to supply power for the ship.
9. The gas-electric hybrid marine energy management system of claim 1, further comprising an alarm device electrically connected to the integrated monitoring device; the integrated monitoring apparatus is further configured to: and under the working condition of ship berthing, when the first switching-on/switching-off switch is abnormally tripped, sending an alarm signal to the alarm device.
10. A gas-electric hybrid ship energy management method is characterized by being executed by a gas-electric hybrid ship energy management system, and the gas-electric hybrid ship energy management system comprises the following steps: the system comprises a shore power supply device, a lithium battery power supply device, a gas generator power supply device, a first switch-off switch, a second switch-off switch, a third switch-off switch, a main power grid and a comprehensive monitoring device; the shore power supply device is connected with the main power grid through the first switch-on/off switch and is used for supplying power to a ship; the lithium battery power supply device is connected with the main power grid through the second switch-off switch and used for supplying power to a ship; the gas generator power supply device is connected with the main power grid through the third switch-on switch and used for supplying power to a ship;
the management method comprises the following steps:
under the working condition of ship berthing operation, controlling the first switching-on and switching-off switch to be switched on, and switching off the second switching-on and switching-off switch and the third switching-on and switching-off switch; when the electric quantity of the lithium battery power supply device does not meet a first preset electric quantity, the lithium battery power supply device is charged;
under the working condition of ship berthing, controlling the first switching-on switch to switch on, switching off the second switching-on switch and the third switching-off switch, and performing charge-discharge maintenance on the lithium battery power supply device according to a preset period;
under the ship navigation working condition, controlling the second switching-on switch to be switched on, and switching off the first switching-on switch and the third switching-off switch; when the lithium battery power supply device has a first type of condition, controlling the third switch-on switch to be switched on and the second switch-off switch to be switched off, or when the lithium battery power supply device has a second type of condition, controlling the third switch-on switch to be switched on;
under the working condition of ship navigation operation, controlling the third switching-on switch to be switched on, and switching off the first switching-on switch and the second switching-off switch; and when the third type of condition occurs in the gas generator power supply device, controlling the third switch-on switch to switch off and the second switch-on switch to switch on, or, when the fourth type of condition occurs in the gas generator power supply device, controlling the second switch-on switch to switch on.
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| CN109823505A (en) * | 2019-03-25 | 2019-05-31 | 海通科创(深圳)有限公司 | One kind being used for towed steamer hybrid power system and method |
| CN113328442A (en) * | 2020-02-28 | 2021-08-31 | 韩国海洋大学产学合作基金会 | Comprehensive power control management system for ship |
| CN112865112A (en) * | 2021-03-18 | 2021-05-28 | 国核电力规划设计研究院有限公司 | Energy storage type shore power system for port |
| CN113300422A (en) * | 2021-05-17 | 2021-08-24 | 交通运输部水运科学研究所 | Ship hybrid power supply system, ship and power supply control method thereof |
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