Ship power station control method, device, electronic equipment and storage medium

Abstract

The present invention discloses a ship power station control method, device, electronic device and storage medium, including: obtaining the actual output power of the exhaust gas turbine generator and judging whether it is greater than the gear power; if so, determining the gear power as the maximum output power of the exhaust gas turbine generator and determining the first target output power of the exhaust gas turbine generator according to the maximum output power, and determining the second target output power of other generators according to the target output total power and the first target output power; controlling each generator to work at the target output power, if not, triggering an alarm of insufficient power generation capacity, controlling other generators to increase the output power, and when the alarm is released within a preset time, determining the target output power of each generator according to the actual output power of the exhaust gas turbine generator. The target output power of each generator is adjusted according to the actual output power of the exhaust gas turbine generator, ensuring the stability of the power supply of the ship power station and improving the energy utilization rate of the ship.

Description

Technical Field

[0001] The present invention relates to the technical field of ship power supply, and in particular to a ship power station control method, device, electronic equipment and storage medium. Background Art

[0002] During normal navigation, the main engine shaft drives the shaft belt generator to generate electricity, and a fuel generator is provided as a supplement. With the mandatory implementation of the national "3060" target and EEDI (Energy Efficiency Design Index), research on green energy-saving technologies for ships has become a very urgent need.

[0003] Exhaust gas turbine generator is a kind of green energy-saving technology for ships. During normal navigation of the ship, the exhaust gas from the main engine of the ship is used to generate superheated steam through the exhaust gas economizer. Part of this steam is used for heating and insulation on the ship, and the rest is used for electricity generation by the exhaust gas turbine generator.

[0004] However, the power generation of the exhaust gas turbine generator is affected by the heat usage on the ship and the output of the main engine, and the power generation of the exhaust gas turbine generator will fluctuate. How to control the grid-connected power supply of the exhaust gas turbine generator to ensure the stability of the ship's power supply has become a technical difficulty that needs to be solved urgently. Summary of the invention

[0005] The present invention provides a ship power station control method, device, electronic equipment and storage medium to solve the problem that the power generation of the exhaust gas turbine generator in the ship power station is affected by the heat usage on the ship, resulting in unstable power supply of the ship power station when connected to the grid for power supply.

[0006] In a first aspect, the present invention provides a ship power plant control method for controlling a ship power plant including an exhaust gas turbine generator and other generators, wherein the other generators include at least one of a shaft generator and a fuel generator, comprising:

[0007] Obtaining the actual output power of the exhaust gas turbine generator, and determining whether the actual output power is greater than the power of the currently selected gear;

[0008] If so, determining the gear power as the maximum output power of the exhaust gas turbine generator;

[0009] determining a first target output power of the exhaust gas turbine generator according to the maximum output power;

[0010] Acquire a target total output power of the ship power station, and determine a second target output power of other generators according to the target total output power and the first target output power;

[0011] controlling the exhaust gas turbine generator to operate at the first target output power, and controlling the other generators to operate at the second target output power;

[0012] If not, trigger an alarm for insufficient power generation capacity, and control the other generators to increase output power;

[0013] When the insufficient power generation capacity alarm is lifted within the preset time period, the actual output power of the exhaust gas turbine generator is determined as the maximum output power, and the process returns to the step of determining the first target output power of the exhaust gas turbine generator based on the maximum output power.

[0014] Optionally, determining the first target output power of the exhaust gas turbine generator according to the maximum output power includes:

[0015] The product of the maximum output power and a preset ratio is calculated as a first target output power of the exhaust gas turbine generator, wherein the preset ratio is less than 1.

[0016] Optionally, the determining the first target output power of the exhaust gas turbine generator according to the maximum output power further includes:

[0017] When the first target output power is less than the minimum output power of the exhaust gas turbine generator, the minimum output power is determined as the first target output power of the exhaust gas turbine generator.

[0018] Optionally, determining the second target output power of other generators according to the first target output power includes:

[0019] Determining a target total output power of the ship power station, and calculating a difference between the target total output power and the first target output power;

[0020] The number of the other generators is determined, and a ratio of the difference to the number is calculated as a second target output power of the other generators.

[0021] Optionally, the triggering of an alarm for insufficient power generation capacity and controlling the other generators to increase output power includes:

[0022] triggering an alarm for insufficient power generation capacity, and calculating the difference between the gear power and the actual output power to obtain the shortfall power;

[0023] The other generators are controlled to increase output power so that the increased total output power of the other generators is equal to the gap power.

[0024] Optionally, also include:

[0025] When the power generation capacity insufficient alarm is not released within a preset time, obtaining the rotation speed of the steam turbine of the ship;

[0026] When the rotation speed is less than a preset rotation speed, the exhaust gas turbine generator is controlled to stop being connected to the grid.

[0027] Optionally, after controlling the exhaust gas turbine generator to stop being connected to the grid, the method further includes:

[0028] Generate an alarm message for reselecting the gear power;

[0029] After detecting the reselected gear power, the exhaust gas turbine generator is controlled to stop reconnecting to the grid, and returns to the step of obtaining the actual output power of the exhaust gas turbine generator and determining whether the actual output power is greater than the currently selected gear power.

[0030] In a second aspect, the present invention provides a ship power plant control device for controlling a ship power plant including an exhaust gas turbine generator and other generators, wherein the other generators include at least one of a shaft generator and a fuel generator, including:

[0031] A power generation capacity determination module, used to obtain the actual output power of the exhaust gas turbine generator and determine whether the actual output power is greater than the power of the currently selected gear;

[0032] a maximum output power determination module, configured to determine the gear power as the maximum output power of the exhaust gas turbine generator;

[0033] A first target output power determination module, configured to determine a first target output power of the exhaust gas turbine generator according to the maximum output power;

[0034] A second target output power determination module, used to obtain a target total output power of the ship power station, and determine a second target output power of other generators according to the target total output power and the first target output power;

[0035] a generator control module, configured to control the exhaust gas turbine generator to operate at the first target output power, and to control the other generators to operate at the second target output power;

[0036] A power generation capacity insufficient alarm module, used to trigger a power generation capacity insufficient alarm and control the other generators to increase output power;

[0037] The maximum output power redetermining module is used to determine the actual output power of the exhaust gas turbine generator as the maximum output power when the insufficient power generation capacity alarm is released within a preset time period, and return to the first target output power determination module.

[0038] In a third aspect, the present invention provides an electronic device, the electronic device comprising:

[0039] at least one processor; and

[0040] a memory communicatively connected to the at least one processor; wherein,

[0041] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the ship power plant control method described in any one of the first aspects of the present invention.

[0042] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the ship power station control method described in any one of the first aspects of the present invention when executed by a processor.

[0043] In the embodiment of the present invention, when the actual output power of the exhaust gas turbine generator is greater than the selected gear power, the gear power is set as the maximum output power of the exhaust gas turbine generator, and the first target output power of the exhaust gas turbine generator is determined according to the maximum output power, and the second target output power of other generators is determined according to the target total output power of the ship power station and the first target output power. When the actual output power of the exhaust gas turbine generator is less than or equal to the selected gear power, the insufficient power generation capacity alarm is triggered and the other generators are controlled to increase the output power. When the insufficient power generation capacity alarm is released within a preset time, the actual output power of the exhaust gas turbine generator is determined as the maximum output power, and the target output power of each generator is re-determined according to the maximum output power, so that the target output power of the exhaust gas turbine generator and other generators is dynamically adjusted according to the actual output power of the exhaust gas turbine generator, and the sum of the output power of each generator is equal to the target total output power of the ship power station, which ensures the stability of the power supply of the ship power station after the exhaust gas turbine generator is connected to the grid, and makes full use of the waste heat of the exhaust gas from the combustion of the ship main engine, thereby improving the energy utilization rate of the ship.

[0044] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a flow chart of a ship power station control method provided by Embodiment 1 of the present invention;

[0047] Figure 2 is a schematic diagram of a ship power station in an embodiment of the present invention;

[0048] Figure 3 is a flow chart of a ship power station control method provided by Embodiment 2 of the present invention;

[0049] Figure 4 It is a structural schematic diagram of a ship power station control device provided by Embodiment 3 of the present invention;

[0050] Figure 5 It is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0052] Embodiment 1

[0053] Figure 1 This is a flow chart of a ship power station control method provided in Embodiment 1 of the present invention. This embodiment can be applied to controlling the grid-connected power supply of exhaust gas turbine generators in ship power stations. This method can be executed by a ship power station control device. The ship power station control device can be implemented in the form of hardware and / or software. The ship power station control device can be configured in an electronic device. Figure 1 As shown, the ship power station control method includes:

[0054] S101. Obtain the actual output power of the exhaust gas turbine generator, and determine whether the actual output power is greater than the power of the currently selected gear.

[0055] like Figure 2As shown, the ship power station of this embodiment includes an exhaust gas turbine generator, at least one shaft generator and / or at least one fuel generator, wherein the exhaust gas turbine generator can be a generator that generates electricity by heating water with the high-temperature exhaust gas discharged after the ship's main engine burns fuel, the shaft generator can be a generator driven by the ship's main engine shaft, and the fuel generator can be a generator that burns diesel or gasoline to generate electricity. Figure 2 The ship power station shown includes an exhaust gas turbine generator, two shaft belt generators and four fuel generators. Of course, in practical applications, technicians in this field can set any number of shaft belt generators and fuel generators, and each generator can be connected to the power supply bus through a frequency converter.

[0056] In this embodiment, a gear selection switch of the exhaust gas turbine generator can be set on the control console, and each gear corresponds to a different gear power. In an example, the gear switch can include 900kW, 500kW, and 250kW, and the user can select a gear among them. After determining the actual output power of the exhaust gas turbine generator, it can be determined whether the actual output power is greater than the gear power of the selected gear. If so, execute S102-S105, if not, execute S106-S107.

[0057] S102: Determine the gear power as the maximum output power of the exhaust gas turbine generator.

[0058] When the actual output power of the exhaust gas turbine generator is greater than the gear power of the selected gear, it is determined that the power generation capacity of the exhaust gas turbine generator is sufficient, and the gear power of the selected gear can be determined as the maximum output power of the exhaust gas turbine generator, that is, the rated power of the exhaust gas turbine generator currently working.

[0059] S103: Determine a first target output power of the exhaust gas turbine generator according to the maximum output power.

[0060] In one embodiment, the maximum output power may be determined as the first target output power of the exhaust gas turbine generator, so that the exhaust gas turbine generator outputs electrical energy at the maximum power.

[0061] In another embodiment, the product of the maximum output power and a preset ratio can be calculated as the first target output power of the exhaust gas turbine generator, wherein the preset ratio is less than 1, thereby avoiding the exhaust gas turbine generator being in a high load state when generating electricity at the maximum output power, causing the exhaust gas turbine generator to fail or be damaged, thereby extending the service life of the exhaust gas turbine generator.

[0062] S104: Acquire the target total output power of the ship power station, and determine the second target output power of other generators according to the target total output power and the first target output power.

[0063] In this embodiment, the other generators may be at least one of a shaft belt generator and a fuel generator, the number of other generators may be more than one, and the target total output power of the ship power station may be the power expected to be output by the ship power station, that is, it may be the minimum output power of the ship power station when meeting the ship's electricity consumption. The difference between the target total output power of the ship power station and the first target output power of the exhaust gas turbine generator may be calculated, and the difference is the total power output by the other generators.

[0064] In one embodiment, when the number of other generators is one, the calculated difference is the second target output power of the other generators. In another embodiment, when the number of other generators is two or more, the ratio of the difference to the number of other generators can be calculated, and the ratio is used as the second target output power of each other generator, that is, the other generators evenly distribute the load. Of course, in actual applications, the other generators may not evenly distribute the load, and this embodiment does not limit the way in which the other generators distribute the load.

[0065] S105, controlling the exhaust gas turbine generator to operate at a first target output power, and controlling other generators to operate at a second target output power.

[0066] When the power generation capacity of the exhaust gas turbine generator is sufficient, after determining the first target output power of the exhaust gas turbine generator and determining the second target output power of other generators, the exhaust gas turbine generator can be controlled to operate at the first target output power and the other generators can be controlled to operate at the second target output power. For example, the inverter of each generator can be controlled to adjust each generator to generate electricity at the target output power.

[0067] S106. Trigger an alarm for insufficient power generation capacity, and control other generators to increase output power.

[0068] When the actual output power of the exhaust gas turbine generator is less than or equal to the gear power of the selected gear, it is determined that the power generation capacity of the exhaust gas turbine generator is insufficient, and an alarm for insufficient power generation capacity can be triggered. For example, an alarm can be triggered by broadcasting a warning sound and / or controlling the indicator light to flash, etc., to indicate that the power generation capacity of the exhaust gas turbine generator is insufficient, and the output power of other generators can be increased, for example, the output power of the shaft belt generator and the fuel generator can be gradually increased to transfer the load on the exhaust gas turbine generator.

[0069] S107: When the alarm of insufficient power generation capacity is released within a preset time period, the actual output power of the exhaust gas turbine generator is determined as the maximum output power.

[0070] After increasing the output power of other generators to transfer the load of the exhaust gas turbine generator, if the actual output power of the exhaust gas turbine generator matches the load currently loaded on the exhaust gas turbine generator within the preset time, for example, the actual output power of the exhaust gas turbine generator is greater than the load currently loaded on the exhaust gas turbine generator, it means that the actual output power of the exhaust gas turbine generator can meet the load requirement loaded on the exhaust gas turbine generator, and the power generation capacity of the exhaust gas turbine generator is sufficient. The alarm of insufficient power generation capacity can be released, and the current actual output power of the exhaust gas turbine generator is determined as the maximum output power, and return to S103 to redetermine the target output power of each generator of the ship power station.

[0071] In the embodiment of the present invention, when the actual output power of the exhaust gas turbine generator is greater than the selected gear power, the gear power is set as the maximum output power of the exhaust gas turbine generator, and the first target output power of the exhaust gas turbine generator is determined according to the maximum output power, and the second target output power of other generators is determined according to the target total output power of the ship power station and the first target output power. When the actual output power of the exhaust gas turbine generator is less than or equal to the selected gear power, the insufficient power generation capacity alarm is triggered and the other generators are controlled to increase the output power. When the insufficient power generation capacity alarm is released within a preset time, the actual output power of the exhaust gas turbine generator is determined as the maximum output power, and the target output power of each generator is re-determined according to the maximum output power, so that the target output power of the exhaust gas turbine generator and other generators is dynamically adjusted according to the actual output power of the exhaust gas turbine generator, and the sum of the output power of each generator is equal to the target total output power of the ship power station, which ensures the stability of the power supply of the ship power station after the exhaust gas turbine generator is connected to the grid, and makes full use of the waste heat of the exhaust gas from the combustion of the ship main engine, thereby improving the energy utilization rate of the ship.

[0072] Embodiment 2

[0073] Figure 3 This is a flow chart of a ship power station control method provided in the second embodiment of the present invention. The embodiment of the present invention is optimized on the basis of the above-mentioned first embodiment. Figure 3 As shown, the ship power station control method includes:

[0074] S301. Obtain the actual output power of the exhaust gas turbine generator, and determine whether the actual output power is greater than the power of the currently selected gear.

[0075] In this embodiment, a gear selection switch of the exhaust gas turbine generator can be set on the ship's control console, and each gear corresponds to a different gear power. In an example, the gear switch can include 900kW, 500kW, and 250kW. Taking the gear power of the currently selected gear as 500kW as an example, the actual output power of the exhaust gas turbine generator can be calculated by detecting the actual output current and actual output voltage of the exhaust gas turbine generator, and it can be determined whether the actual output power of the exhaust gas turbine generator is greater than the selected gear power, such as whether it is greater than 500kW. If so, execute S302-S306, if not, execute S307-S311.

[0076] S302: Determine the gear power as the maximum output power of the exhaust gas turbine generator.

[0077] When the actual output power of the exhaust gas turbine generator is greater than the gear power of the selected gear, it is determined that the power generation capacity of the exhaust gas turbine generator is sufficient, and the gear power of the selected gear can be determined as the maximum output power of the exhaust gas turbine generator, that is, the rated power of the exhaust gas turbine generator currently working.

[0078] Taking the gear power of the currently selected gear as 500 kW as an example, when the actual output power of the exhaust gas turbine generator is greater than 500 kW, the maximum output power of the exhaust gas turbine generator is set to 500 kW.

[0079] S303: Calculate the product of the maximum output power and a preset ratio to serve as the first target output power of the exhaust gas turbine generator, wherein the preset ratio is less than 1.

[0080] In this embodiment, the preset ratio is less than 1, and the product of the maximum output power and the preset ratio can be calculated as the first target output power of the exhaust gas turbine generator. For example, assuming that the preset ratio is 0.8, the first target output power of the exhaust gas turbine generator is 500kW×0.8=400kW. By calculating the product of the maximum output power and the preset ratio as the first target output power of the exhaust gas turbine generator, it is possible to avoid the exhaust gas turbine generator being in a high load state when operating at the maximum output power, causing the exhaust gas turbine generator to fail or be damaged, thereby extending the service life of the exhaust gas turbine generator.

[0081] In another embodiment, when the first target output power is less than the minimum output power of the exhaust gas turbine generator, the minimum output power is determined as the first target output power of the exhaust gas turbine generator. For example, when the minimum output power of the exhaust gas turbine generator is 180 kW, assuming that the calculated first target output power is less than 180 kW, the first target output power is set to 180 kW. By limiting the minimum output power of the exhaust gas turbine generator, adverse factors when the exhaust gas turbine generator runs at a lower power are avoided, thereby ensuring that the exhaust gas turbine generator runs in a normal state.

[0082] S304: Obtain the target total output power of the ship power station, and calculate the difference between the target total output power and the first target output power.

[0083] The target total output power of the ship power station can be the minimum power of the ship power station when meeting the ship's electricity needs. After determining the first target output power of the exhaust gas turbine generator, the difference between the target total output power and the first target output power is calculated. The difference is the total power of other generators, that is, the total output power of the shaft generator and / or the fuel generator.

[0084] For example, assuming that the target total output power of the ship power station is 1000 kW and the first target output power of the exhaust gas turbine generator is 400 kW, the difference is 1000 kW-400 kW=600 kW.

[0085] S305: Determine the number of other generators, and calculate the ratio of the difference to the number as the second target output power of the other generators.

[0086] The number of other generators is the total number of shaft generators and fuel generators, such as Figure 2 As shown, the number of shaft generators is 2, the number of fuel generators is 4, and the number of other generators is 6. The ratio of the difference to the number of other generators can be calculated as the target output power of each other generator. Taking the above difference of 600kW as an example, the second target output power of other generators is 600kW / 6=100kW, that is, the second target output power of each shaft generator is 100kW, and the second target output power of each fuel generator is also 100kW.

[0087] S306: Control the exhaust gas turbine generator to operate at the first target output power, and control other generators to operate at the second target output power.

[0088] When the power generation capacity of the exhaust gas turbine generator is sufficient, after determining the first target output power of the exhaust gas turbine generator and determining the second target output power of other generators, the exhaust gas turbine generator can be controlled to operate at the first target output power and the other generators can be controlled to operate at the second target output power. For example, the inverter of each generator can be controlled to adjust the output power of each generator.

[0089] S307, triggering an alarm for insufficient power generation capacity, and calculating the difference between the gear power and the actual output power to obtain the shortfall power.

[0090] When the actual output power of the exhaust gas turbine generator is less than or equal to the gear power of the selected gear, it is determined that the power generation capacity of the exhaust gas turbine generator is insufficient, which can trigger an alarm for insufficient power generation capacity, and calculate the difference between the gear power and the actual output power to obtain the gap power. For example, assuming that the gear power is 500kW and the actual output power of the exhaust gas turbine generator is 350kW, the gap power can be 500kW-350kW=150kW.

[0091] S308. Control other generators to increase output power so that the total output power increased by other generators is equal to the shortfall power.

[0092] Specifically, the output power of the shaft belt generator and the fuel generator can be increased by frequency and load regulation to transfer the load on the exhaust gas turbine generator. For example, the gap power can be evenly distributed to the shaft belt generator and the fuel generator so that the sum of the power increments of the shaft belt generator and the fuel generator is equal to the gap power.

[0093] S309: When the alarm of insufficient power generation capacity is lifted within a preset time period, the actual output power of the exhaust gas turbine generator is determined as the maximum output power.

[0094] In this embodiment, due to the alarm of insufficient power generation capacity, the output power of other generators is increased to reduce the load on the exhaust gas turbine generator. When the load on the exhaust gas turbine generator is less than or equal to the actual output power of the exhaust gas turbine generator, it is determined that the current power generation capacity of the exhaust gas turbine generator can meet the load demand loaded on the exhaust gas turbine generator, and the alarm of insufficient power generation capacity can be released. When the alarm is no longer given within a preset time, it is determined that the power generation of the exhaust gas turbine generator is stable, and the current actual output power of the exhaust gas turbine generator can be determined as the maximum output power, and the process returns to S303 to redetermine the first target output power of the exhaust gas turbine generator and the second target output power of other generators.

[0095] S310: When the alarm of insufficient power generation capacity is not released within a preset time period, the rotation speed of the steam turbine of the ship is obtained.

[0096] If the insufficient power generation capacity alarm is not released within the preset time, it means that the power generation capacity of the exhaust gas turbine generator is further reduced, and the rotation speed of the steam turbine of the ship can be obtained.

[0097] S311. When the rotation speed is less than a preset rotation speed, the exhaust gas turbine generator is controlled to stop being connected to the grid.

[0098] Since the speed of the steam turbine is related to the amount and temperature of the exhaust gas supplied, a low speed of the steam turbine will reduce the output power of the exhaust gas turbine generator. When the alarm of insufficient power generation capacity is not lifted within the preset time and the speed of the steam turbine is less than the preset speed, it is determined that the current output power of the exhaust gas turbine generator is too low, and the exhaust gas turbine generator can be controlled to stop being connected to the grid. For example, the grid-connected switch of the exhaust gas turbine generator is controlled to be disconnected, thereby avoiding the problem of unstable power supply of the ship power station caused by frequent adjustment of the power of other generators due to grid connection when the power generation capacity of the exhaust gas turbine generator is low.

[0099] In an optional embodiment, after the exhaust gas turbine generator is controlled to stop being connected to the grid, an alarm message for reselecting the gear power may be generated, and after the reselected gear power is detected, the exhaust gas turbine generator is controlled to stop being reconnected to the grid, and the process returns to S301. Exemplarily, after the exhaust gas turbine generator is controlled to stop being connected to the grid, a voice message for selecting a gear lower than the currently selected gear may be played to prompt the user to select a lower gear, and after the reselected gear is detected, the grid-connected switch of the exhaust gas turbine generator is controlled to be closed, and the process returns to S301.

[0100] In this embodiment, when the actual output power of the exhaust gas turbine generator is greater than the currently selected gear power, the gear power is determined as the maximum output power of the exhaust gas turbine generator, and the product of the maximum output power and the preset ratio is calculated as the first target output power of the exhaust gas turbine generator, and the target total output power of the ship power station is obtained, and the difference between the target total output power and the first target output power is calculated, the number of other generators is determined, and the ratio of the difference to the number is calculated as the second target output power of the other generators, the exhaust gas turbine generator is controlled to operate at the first target output power, and the other generators are controlled to operate at the second target output power, and when the actual output power of the exhaust gas turbine generator is greater than the currently selected gear power, an alarm of insufficient power generation capacity is triggered, and the gear power is calculated. The difference between the power efficiency and the actual output power is used to obtain the gap power, and other generators are controlled to increase their output power so that the total output power increased by other generators is equal to the gap power. When the alarm of insufficient power generation capacity is lifted within the preset time, the actual output power of the exhaust gas turbine generator is determined as the maximum output power, and the first target output power and the second target output power are re-determined based on the maximum output power, thereby realizing dynamic adjustment of the target output power of the exhaust gas turbine generator and other generators according to the actual output power of the exhaust gas turbine generator, and the sum of the output power of each generator is equal to the target total output power of the ship power station, thereby ensuring the stability of the power supply of the ship power station after the exhaust gas turbine generator is connected to the grid, and making full use of the waste heat of the exhaust gas from the combustion of the ship's main engine, thereby improving the energy utilization rate of the ship.

[0101] Furthermore, when the alarm of insufficient power generation capacity is not lifted within the preset time period, the rotation speed of the ship's steam turbine is obtained, and the exhaust gas turbine generator is controlled to stop connecting to the grid when the rotation speed is less than the preset speed. After the exhaust gas turbine generator is controlled to stop connecting to the grid, an alarm message for reselecting the gear power is generated. After detecting the reselected gear power, the exhaust gas turbine generator is controlled to stop and reconnect to the grid, thereby achieving the goal of stopping the exhaust gas turbine generator from connecting to the grid when the power generation capacity is low and then reselecting the gear to connect to the grid. This solves the problem of frequent adjustment of the output power of each generator due to inappropriate gear selection when the power generation capacity of the exhaust gas turbine generator is low, thereby ensuring the stability of power supply to the ship's power station.

[0102] Embodiment 3

[0103] Figure 4 This is a schematic diagram of the structure of a ship power station control device provided by the third embodiment of the present invention. Figure 4 As shown, the ship power station control device is used to control a ship power station including an exhaust gas turbine generator and other generators, the other generators including at least one of a shaft generator and a fuel generator, specifically including:

[0104] The power generation capacity determination module 401 is used to obtain the actual output power of the exhaust gas turbine generator and determine whether the actual output power is greater than the power of the currently selected gear;

[0105] A maximum output power determination module 402, configured to determine the gear power as the maximum output power of the exhaust gas turbine generator;

[0106] A first target output power determination module 403, configured to determine a first target output power of the exhaust gas turbine generator according to the maximum output power;

[0107] The second target output power determination module 404 is used to obtain the target total output power of the ship power station, and determine the second target output power of other generators according to the target total output power and the first target output power;

[0108] A generator control module 405, used to control the exhaust gas turbine generator to operate at a first target output power, and to control other generators to operate at a second target output power;

[0109] The power generation capacity insufficient alarm module 406 is used to trigger the power generation capacity insufficient alarm and control other generators to increase the output power;

[0110] The maximum output power redetermining module 407 is used to determine the actual output power of the exhaust gas turbine generator as the maximum output power when the power generation capacity insufficient alarm is released within a preset time period, and return it to the power generation capacity judgment module.

[0111] Optionally, the first target output power determination module 403 includes:

[0112] The first target output power calculation unit is used to calculate the product of the maximum output power and a preset ratio as the first target output power of the exhaust gas turbine generator, wherein the preset ratio is less than 1.

[0113] Optionally, the first target output power determination module 403 further includes:

[0114] The minimum output power determination unit is used to determine the minimum output power as the first target output power of the exhaust gas turbine generator when the first target output power is less than the minimum output power of the exhaust gas turbine generator.

[0115] Optionally, the second target output power determination module 404 includes:

[0116] A power difference calculation unit, used to calculate the difference between the target output total power and the first target output power;

[0117] The second target output power calculation unit is used to determine the number of other generators and calculate the ratio of the difference to the number as the second target output power of the other generators.

[0118] Optionally, the insufficient power generation capacity alarm module 406 includes:

[0119] The gap power calculation unit is used to trigger the alarm of insufficient power generation capacity and calculate the difference between the gear power and the actual output power to obtain the gap power;

[0120] The power increasing unit is used to control other generators to increase their output power so that the total output power increased by other generators is equal to the shortfall power.

[0121] Optionally, also include:

[0122] The speed acquisition module is used to obtain the speed of the steam turbine of the ship when the alarm of insufficient power generation capacity is not released within a preset time;

[0123] The grid-connection stop module is used to control the exhaust gas turbine generator to stop connecting to the grid when the speed is less than a preset speed.

[0124] Optionally, also include:

[0125] The gear selection prompt module is used to generate an alarm message for reselecting the gear power;

[0126] The reconnection module is used to control the exhaust gas turbine generator to stop reconnection to the grid after detecting the reselected gear power, and return to the first target output power determination module 403.

[0127] The ship power station control device provided in the embodiment of the present invention can execute the ship power station control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0128] Embodiment 4

[0129] Figure 5 A schematic diagram of an electronic device 50 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0130] like Figure 5 As shown, the electronic device 50 includes at least one processor 51, and a memory connected to the at least one processor 51 in communication, such as a read-only memory (ROM) 52, a random access memory (RAM) 53, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 51 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 52 or the computer program loaded from the storage unit 58 to the random access memory (RAM) 53. In the RAM 53, various programs and data required for the operation of the electronic device 50 can also be stored. The processor 51, the ROM 52, and the RAM 53 are connected to each other via a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0131] A number of components in the electronic device 50 are connected to the I / O interface 55, including: an input unit 56, such as a keyboard, a mouse, etc.; an output unit 57, such as various types of displays, speakers, etc.; a storage unit 58, such as a disk, an optical disk, etc.; and a communication unit 59, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 59 allows the electronic device 50 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0132] The processor 51 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 51 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 51 executes the various methods and processes described above, such as a ship power plant control method.

[0133] In some embodiments, the ship power plant control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 58. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 50 via the ROM 52 and / or the communication unit 59. When the computer program is loaded into the RAM 53 and executed by the processor 51, one or more steps of the ship power plant control method described above may be performed. Alternatively, in other embodiments, the processor 51 may be configured to execute the ship power plant control method in any other appropriate manner (e.g., by means of firmware).

[0134] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0135] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0136] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0137] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0138] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0139] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0140] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0141] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ship power station control method, characterized in that: For controlling a marine power plant including an exhaust gas turbine generator and another generator, the other generator including at least one of a shaft generator and a fuel oil generator, comprising: Obtaining the actual output power of the exhaust gas turbine generator, and determining whether the actual output power is greater than the power of the currently selected gear; If so, determining the gear power as the maximum output power of the exhaust gas turbine generator; determining a first target output power of the exhaust gas turbine generator according to the maximum output power; Acquire a target total output power of the ship power station, and determine a second target output power of other generators according to the target total output power and the first target output power; controlling the exhaust gas turbine generator to operate at the first target output power, and controlling the other generators to operate at the second target output power; If not, trigger an alarm for insufficient power generation capacity, and control the other generators to increase output power; When the insufficient power generation capacity alarm is lifted within the preset time period, the actual output power of the exhaust gas turbine generator is determined as the maximum output power, and the process returns to the step of determining the first target output power of the exhaust gas turbine generator based on the maximum output power.

2. The ship power plant control method according to claim 1, characterized in that: The step of determining the first target output power of the exhaust gas turbine generator according to the maximum output power comprises: The product of the maximum output power and a preset ratio is calculated as a first target output power of the exhaust gas turbine generator, wherein the preset ratio is less than 1.

3. The ship power plant control method according to claim 2, characterized in that: The step of determining the first target output power of the exhaust gas turbine generator according to the maximum output power further includes: When the first target output power is less than the minimum output power of the exhaust gas turbine generator, the minimum output power is determined as the first target output power of the exhaust gas turbine generator.

4. The ship power plant control method according to claim 1, characterized in that: The acquiring the target total output power of the ship power station, and determining the second target output power of other generators according to the target total output power and the first target output power, comprises: Obtaining a target total output power of the ship power station, and calculating a difference between the target total output power and the first target output power; The number of the other generators is determined, and a ratio of the difference to the number is calculated as a second target output power of the other generators.

5. The ship power station control method according to any one of claims 1 to 4, characterized in that: The triggering of the insufficient power generation capacity alarm and controlling the other generators to increase the output power comprises: triggering an alarm for insufficient power generation capacity, and calculating the difference between the gear power and the actual output power to obtain the shortfall power; The other generators are controlled to increase output power so that the increased total output power of the other generators is equal to the gap power.

6. The ship power station control method according to any one of claims 1 to 4, characterized in that: Also includes: When the power generation capacity insufficient alarm is not released within a preset time, obtaining the rotation speed of the steam turbine of the ship; When the rotation speed is less than a preset rotation speed, the exhaust gas turbine generator is controlled to stop being connected to the grid.

7. The ship power station control method according to claim 6, characterized in that: After controlling the exhaust gas turbine generator to stop being connected to the grid, the method further includes: Generate an alarm message for reselecting the gear power; After detecting the reselected gear power, the exhaust gas turbine generator is controlled to stop reconnecting to the grid, and returns to the step of obtaining the actual output power of the exhaust gas turbine generator and determining whether the actual output power is greater than the currently selected gear power.

8. A ship power station control device, characterized in that: For controlling a marine power plant including an exhaust gas turbine generator and another generator, the other generator including at least one of a shaft generator and a fuel oil generator, comprising: A power generation capacity determination module, used to obtain the actual output power of the exhaust gas turbine generator and determine whether the actual output power is greater than the power of the currently selected gear; a maximum output power determination module, configured to determine the gear power as the maximum output power of the exhaust gas turbine generator; A first target output power determination module, configured to determine a first target output power of the exhaust gas turbine generator according to the maximum output power; A second target output power determination module, used to obtain a target total output power of the ship power station, and determine a second target output power of other generators according to the target total output power and the first target output power; a generator control module, configured to control the exhaust gas turbine generator to operate at the first target output power, and to control the other generators to operate at the second target output power; A power generation capacity insufficient alarm module, used to trigger a power generation capacity insufficient alarm and control the other generators to increase output power; The maximum output power redetermining module is used to determine the actual output power of the exhaust gas turbine generator as the maximum output power when the insufficient power generation capacity alarm is released within a preset time period, and return to the first target output power determination module.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the ship power plant control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the ship power station control method according to any one of claims 1 to 7 when executed.

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