Axle generator test method, device, equipment and medium for dual-fuel ship

Abstract

The invention discloses a shaft generator test method, device and equipment for a dual-fuel ship and a medium, and belongs to the technical field of ship electrical engineering. The method comprises the following steps: connecting all electric load equipment of the dual-fuel ship to the first power distribution device; cutting off the connection between the first power distribution device and the second power distribution device; and performing an axle generator test based on the second power distribution device to obtain a test result of the axle generator. According to the technical scheme, the electric load equipment is connected to the first power distribution device, the connection between the first power distribution device and the second power distribution device is cut off, and the axle generator test is carried out based on the second power distribution device, so that the condition that the electric load equipment has no power supply due to failure and abnormity of the axle generator test can be avoided; and the ship navigation safety and reliability in the test process are improved.

Description

Technical Field

[0001] This application belongs to the technical field of ship electrical engineering, and particularly relates to a shaft generator test method, device, equipment and medium for a dual-fuel ship. Background Technique

[0002] A shaft generator is a device that drives power generation by means of the mechanical energy of the ship's main engine transmission shaft. It converts the surplus power of the main engine operation into electrical energy, effectively improving the ship's energy utilization efficiency and reducing fuel consumption and operating costs. However, the shaft generator is vulnerable to the complex working conditions of the ship, and its performance may decline or there may be potential faults. Therefore, it is very necessary to carry out shaft generator tests.

[0003] Currently, the shaft generator test is generally directly carried out by using the electrical load equipment on the ship. However, this method has major safety hazards. Once the shaft generator fails, has abnormal performance or unstable power output during the test, it is extremely easy to cause the interruption of the ship's power supply, resulting in the key systems such as ship navigation, communication and propulsion being unable to operate normally, seriously threatening the ship's navigation safety.

[0004] Therefore, how to ensure the stable power supply of the ship during the shaft generator test is an urgent problem for those skilled in the art to solve. Summary of the Invention

[0005] The embodiments of this application provide a shaft generator test method, device, equipment and medium for a dual-fuel ship, aiming to avoid the situation of no power supply for the electrical load equipment caused by the failure or abnormality of the shaft generator test, and improve the navigation safety and reliability of the ship during the test.

[0006] In a first aspect, the embodiments of this application provide a shaft generator test method for a dual-fuel ship. The dual-fuel ship is equipped with a dual-fuel generator, a shaft generator, electrical load equipment, a load test device and a power distribution device. The power distribution device includes a first power distribution device and a second power distribution device. The method includes:

[0007] Connect all the electrical load equipment of the dual-fuel ship to the first power distribution device;

[0008] Cut off the connection between the first power distribution device and the second power distribution device. Among them, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0009] Based on the second power distribution device, a shaft generator test is carried out to obtain the test result of the shaft generator.

[0010] Second aspect, an embodiment of the present application provides a shaft generator test device for a dual-fuel ship. The dual-fuel ship is equipped with a dual-fuel generator, a shaft generator, electrical load equipment, a load test device, and a power distribution device. The power distribution device includes a first power distribution device and a second power distribution device. The device includes:

[0011] An electrical load access module for connecting all the electrical load equipment of the dual-fuel ship to the first power distribution device;

[0012] A power distribution connection cut-off module for cutting off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0013] A shaft generator test module for performing a shaft generator test based on the second power distribution device to obtain a test result of the shaft generator.

[0014] Third aspect, an embodiment of the present application provides an electronic device. The electronic device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0015] Fourth aspect, an embodiment of the present application provides a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0016] In the embodiment of the present application, all the electrical load equipment of the dual-fuel ship is connected to the first power distribution device; the connection between the first power distribution device and the second power distribution device is cut off; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device; a shaft generator test is performed based on the second power distribution device to obtain a test result of the shaft generator. The above-mentioned shaft generator test method for a dual-fuel ship can avoid the situation of no power supply to the electrical load equipment caused by the abnormal failure of the shaft generator test by connecting the electrical load equipment to the first power distribution device and cutting off the connection between the first power distribution device and the second power distribution device, and perform the shaft generator test based on the second power distribution device, thereby improving the navigation safety and reliability of the ship during the test process. Description of the Drawings

[0017] Figure 1 is a schematic flowchart of a shaft generator test method for a dual-fuel ship provided in Embodiment 1 of the present application;

[0018] Figure 2 It is a schematic diagram of the power grid of the dual-fuel ship provided in the first embodiment of the present application;

[0019] Figure 3 It is a schematic flow chart of the shaft generator test method for the dual-fuel ship provided in the second embodiment of the present application;

[0020] Figure 4 It is a schematic flow chart of the shaft generator test method for the dual-fuel ship provided in the third embodiment of the present application;

[0021] Figure 5 It is a schematic flow chart of the shaft generator test method for the dual-fuel ship provided in the fourth embodiment of the present application;

[0022] Figure 6 It is a schematic flow chart of the shaft generator test method for the dual-fuel ship provided in the fifth embodiment of the present application;

[0023] Figure 7 It is a schematic structural diagram of the shaft generator test device for the dual-fuel ship provided in the sixth embodiment of the present application;

[0024] Figure 8 It is a schematic structural diagram of the electronic device provided in the seventh embodiment of the present application. Detailed implementation manners

[0025] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following further describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for ease of description, only parts related to the present application are shown in the drawings, rather than all the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. When the operations are completed, the process can be terminated, but there may also be additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0026] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application fall within the scope of protection of the present application.

[0027] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0028] The following will combine the accompanying drawings and, through specific embodiments and their application scenarios, elaborate in detail on the shaft generator test method, device, equipment, and medium for dual-fuel ships provided by the embodiments of this application.

[0029] Embodiment 1

[0030] Figure 1 It is a schematic flowchart of the shaft generator test method for a dual-fuel ship provided by Embodiment 1 of this application. As Figure 1 shown, it specifically includes the following steps:

[0031] S101, connect all the electrical load devices of the dual-fuel ship to the first power distribution device;

[0032] First, this application is applicable to scenarios where shaft generator tests need to be carried out on dual-fuel ships. Specifically, the connection and disconnection of electrical load devices, the connection between the first power distribution device and the second power distribution device, and the conduct of shaft generator tests, etc. can be executed by an intelligent terminal capable of controlling the power system of the dual-fuel ship, and the power system of the dual-fuel ship can be optimized according to the obtained test results of the shaft generator, thereby improving the operating reliability of the power system of the dual-fuel ship.

[0033] Based on the above usage scenarios, it can be understood that the execution subject of this application can be the intelligent terminal, such as a desktop computer, a laptop computer, a mobile phone, a tablet computer, and an interactive multimedia device, etc., and no excessive limitations are imposed here.

[0034] A dual-fuel ship can refer to a ship that can use two different fuels (such as diesel and natural gas, etc.) as the power source, such as a dual-fuel PCTC (Pure Car and Truck Carrier). A dual-fuel generator can be a power generation device installed on a dual-fuel ship that can use two different fuels (such as diesel and natural gas, etc.) to generate electrical energy.

[0035] The shaft generator can be a device that utilizes the rotational power of the ship's main engine shafting to drive power generation. The shaft generator is connected to the transmission shaft of the main engine. When the main engine is operating, it drives the generator to rotate and generate electricity by means of the power of the main engine. Specifically, in this solution, the dual-fuel ship can be equipped with a set of 1200KW (kilowatt) variable-frequency shaft generator system; among them, 1200KW indicates that the rated power of each shaft generator in the shaft generator system is 1200KW, and variable-frequency means that the output characteristics of the shaft generator can be adjusted by changing the frequency of the power supply.

[0036] The electrical load equipment can refer to various equipment on the ship that needs to consume electrical energy to operate, including but not limited to the ship's lighting system, ventilation equipment, air-conditioning system, navigation equipment, communication equipment, electric auxiliary equipment in the ship's power system, and various electrical appliances in the living facilities, etc.

[0037] The load test device can be a device that can simulate various electrical load conditions during the actual operation of the ship in the shaft generator test, such as a dry load cylinder. Specifically, the dry load cylinder is a device used to test the performance of the generator; the dry load cylinder can simulate various different load conditions, absorb the electrical energy output by the generator, and detect parameters such as the output voltage, current, and frequency of the generator under different loads to evaluate the performance and stability of the generator.

[0038] The distribution device can be an important part of the power system, used for distributing, controlling, and protecting the electrical energy generated by the generator. The distribution device can rationally distribute the electrical energy output by the generator to each branch according to the needs of different electrical load equipment, and perform switch control, overload protection, and short-circuit protection on the circuit, etc. The distribution device can include a first distribution device and a second distribution device; in the case of not conducting the shaft generator test, both the first distribution device and the second distribution device are used to distribute electrical energy to the electrical load equipment on the dual-fuel ship; in the case of conducting the shaft generator test, the first distribution device is used to simultaneously distribute electrical energy to the electrical load equipment that was originally connected to the first distribution device and the second distribution device on the dual-fuel ship, and the second distribution device is dedicated to conducting the shaft generator test.

[0039] Figure 2 It is an example diagram of the power grid of the dual-fuel ship provided in the first embodiment of this application. Figure 2It is a three-phase three-wire AC 450V 60Hz IT system; three-phase three-wire is a circuit form where there are three phase lines (live wires) in a three-phase circuit and no neutral line (neutral wire); AC represents alternating current, meaning the power grid provides an alternating current; 60Hz indicates that the frequency of the alternating current is 60 Hertz, that is, the current changes periodically 60 times per second; IT is a power system grounding method, where "I" means the power supply end is not grounded or grounded through a high impedance, and "T" means the exposed conductive parts of electrical equipment are directly grounded. As Figure 2 shown, Figure 2 it distinguishes the starboard side and the port side; the main switchboard is within the box, and MSB01 - MSB11 represent different segments or circuits of the main switchboard. The thickest white line in the box is the AC busbar; No.1GEN, No.2GEN, and No.3GEN respectively represent the No.1, No.2, and No.3 dual-fuel generators, and these dual-fuel generators are directly connected to the AC busbar; PTO 1200KW is the above-mentioned 1200KW variable-frequency shaft generator system, which is directly connected to the AC busbar; Aux.Machines (auxiliary machinery), OilMist Detection Fans (oil mist detection fans), HVAC Fans (heating, ventilation, and air conditioning fans), and Pump supply (pump power supply), etc. are all electrical load devices. Among them, according to Figure 2 this, the first distribution device of this solution can refer to the starboard side of the main switchboard, and the second distribution device of this solution can refer to the port side of the main switchboard.

[0040] Connecting all the electrical load devices of the dual-fuel ship to the first distribution device can mean that the electrical load devices originally connected to the first distribution device continue to be connected to the first distribution device, and the electrical load devices originally connected to the second distribution device are changed to be connected to the second distribution device. The actual operation of connecting all the electrical load devices of the dual-fuel ship to the first distribution device can be achieved through the power station PMS (Power Management System).

[0041] S102, cut off the connection between the first distribution device and the second distribution device; where the first distribution device is connected to at least one dual-fuel generator, and the second distribution device is connected to the shaft generator and the load test device;

[0042] The first distribution device being connected to at least one dual-fuel generator is used to ensure that all the electrical load devices connected to the first distribution device are not affected by abnormal shaft generator tests and still have power supply for normal operation.

[0043] The second distribution device is connected to the shaft generator and the load test device, enabling the second distribution device to be used for shaft generator tests.

[0044] By disconnecting the synchronization panel connection switch between the first power distribution device and the second power distribution device, the connection between the first power distribution device and the second power distribution device can be cut off. Among them, the synchronization panel is an important device in the power system for realizing synchronous operation when generators are operating in parallel, such as Figure 2 the SYN (synchronization device) in

[0045] S103, conduct a shaft generator test based on the second power distribution device to obtain the test results of the shaft generator.

[0046] The shaft generator test is a series of tests and inspection operations on the shaft generator, aiming to evaluate the performance and reliability of the shaft generator to ensure its normal operation in the power system of a dual-fuel ship. The shaft generator test can include load test, sudden load addition and removal test, synchronous paralleling test, and standby generator self-start test, etc. The test results can refer to the conclusions obtained through the analysis and evaluation of the data collected during the test process, the observed phenomena, and various test indicators after the shaft generator test is completed.

[0047] The method of obtaining the test results of the shaft generator by conducting a shaft generator test based on the second power distribution device can be to obtain the load test results of the shaft generator by conducting a load test based on the second power distribution device, and / or obtain the sudden load addition and removal test results of the shaft generator by conducting a sudden load addition and removal test based on the second power distribution device, and / or obtain the synchronous paralleling test results of the shaft generator by conducting a synchronous paralleling test based on the second power distribution device, and / or obtain the standby generator self-start results of the shaft generator by conducting a standby generator self-start test based on the second power distribution device.

[0048] Optionally, before conducting a shaft generator test based on the second power distribution device to obtain the test results of the shaft generator, the following items can also be inspected for guarantee: wiring and insulation inspection are completed; all power supply voltages are available; there are no any faults or alarms in the shaft generator system; the shaft generator is under local control; the shaft speed is within the test range; the main switchboard is ready to operate; the monitoring and alarm system is ready to operate.

[0049] In this technical solution, optionally, conducting a shaft generator test based on the second power distribution device to obtain the test results of the shaft generator includes:

[0050] Conducting a load test based on the second power distribution device to obtain the load test results of the shaft generator;

[0051] and / or,

[0052] Perform a sudden load application and rejection test based on the second power distribution device to obtain the sudden load application and rejection test results of the shaft generator.

[0053] And / or,

[0054] Perform a synchronization paralleling test based on the second power distribution device to obtain the synchronization paralleling test results of the shaft generator.

[0055] And / or,

[0056] Perform a standby generator self-start test based on the second power distribution device to obtain the standby generator self-start results of the shaft generator.

[0057] The load test can be used to evaluate the performance of the shaft generator under different load conditions. The load test results are the conclusions drawn after analyzing the load test process and data. The method of obtaining the load test results of the shaft generator by performing a load test based on the second power distribution device can be to obtain at least two preset first load information and the test time associated with the preset first load information, adjust the load parameters of the shaft generator to the preset first load information through the load test device, obtain the load test record data during the test time, and determine the load test results of the shaft generator according to the preset first load information, test time, and load test record data.

[0058] The sudden load application and rejection test can be used to test the dynamic response ability of the shaft generator when suddenly increasing or decreasing a large amount of load. The sudden load application and rejection test results are the conclusions obtained after analyzing the sudden load application and rejection test process and data. The method of obtaining the sudden load application and rejection test results of the shaft generator by performing a sudden load application and rejection test based on the second power distribution device can be to, when the load parameter of the shaft generator is the rated load, adjust the load parameter of the shaft generator to 0 through the load test device, and / or obtain at least two preset second load information and adjust the load parameter of the shaft generator to the preset second load information through the load test device, obtain the sudden load application and rejection test record data, and determine the sudden load application and rejection test results of the shaft generator according to the sudden load application and rejection test record data.

[0059] The synchronization paralleling test can be used to test whether the shaft generator can achieve synchronization when operating in parallel with other generators. The synchronization paralleling test results are the conclusions drawn after analyzing the synchronization paralleling test process and data. The method of obtaining the synchronization paralleling test results of the shaft generator by performing a synchronization paralleling test based on the second power distribution device can be to control the shaft generator to operate in parallel with the dual-fuel generator, obtain the synchronization paralleling test record data, and determine the synchronization paralleling test results of the shaft generator according to the synchronization paralleling test record data.

[0060] The self-starting test of the standby generator can be used to simulate the starting time, starting success rate of the standby generator, and whether it can supply power normally after starting under the condition of main power failure. The result of the self-starting of the standby generator is the conclusion obtained after analyzing the process and data of the self-starting test of the standby generator. The method of obtaining the self-starting result of the standby generator of the shaft generator based on the second power distribution device can be to select a dual-fuel generator as the standby generator, and obtain the access status of the standby generator under the condition of the failure of the shaft generator, and / or, under the condition of the change of the operating parameters of the ship engine, obtain the access status of the shaft generator and the standby generator, and / or, under the condition that the load parameter of the shaft generator exceeds the first preset load threshold, obtain the access status of the standby generator, and / or, when the shaft generator and the dual-fuel generator are operating in parallel and the load parameter of the standby generator is less than the second preset load threshold, obtain the access status of the standby generator.

[0061] The advantage of this solution is that by conducting load tests, sudden load addition and removal tests, synchronization and paralleling tests, and self-starting tests of the standby generator based on the second power distribution device, etc., the operating performance and reliability of the shaft generator under different working conditions can be comprehensively and accurately evaluated, which helps to discover potential faults and performance shortcomings in advance, and provides a scientific basis for the optimal design and operation and maintenance strategy formulation of the power system of dual-fuel ships, thereby improving the safety, stability and economy of the overall power supply of dual-fuel ships.

[0062] In the embodiment of the present application, all the electrical load devices of the dual-fuel ship are connected to the first power distribution device; the connection between the first power distribution device and the second power distribution device is cut off; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device; based on the second power distribution device, a shaft generator test is carried out to obtain the test result of the shaft generator. The above-mentioned shaft generator test method for a dual-fuel ship can avoid the situation of no power supply to the electrical load devices caused by the abnormal failure of the shaft generator test by connecting the electrical load devices to the first power distribution device and cutting off the connection between the first power distribution device and the second power distribution device, and based on the second power distribution device to carry out the shaft generator test, which improves the navigation safety and reliability of the ship during the test.

[0063] Embodiment 2

[0064] Figure 3It is a schematic flow chart of the shaft generator test method for a dual-fuel ship provided in the second embodiment of the present application. This solution makes a better improvement to the above embodiment. The specific improvement is as follows: Based on the second power distribution device, a load test is performed to obtain the load test result of the shaft generator, including: obtaining at least two preset first load information and the test time associated with the preset first load information; adjusting the load parameters of the shaft generator to the preset first load information through the load test device; obtaining the load test record data during the test time; wherein, the load test record data includes at least one of current data, voltage data, frequency data, power factor data, and the rotational speed data of the ship engine; according to the preset first load information, the test time, and the load test record data, determine the load test result of the shaft generator.

[0065] As Figure 3 shown, it specifically includes the following steps:

[0066] S301, connect all the electrical load devices of the dual-fuel ship to the first power distribution device;

[0067] S302, cut off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0068] S303, obtain at least two preset first load information and the test time associated with the preset first load information;

[0069] The preset first load information may refer to the specific values that the load parameters of the shaft generator should reach in the load test, which may include 0%, 25%, 50%, 75%, and 100%, etc. Among them, the load parameter of the shaft generator may refer to the load rate, which is the ratio of the actual output active power of the shaft generator to the rated active power, expressed as a percentage.

[0070] The test time associated with the preset first load information may refer to the duration during which the load parameter of the shaft generator remains consistent with the preset first load information. For example, the test time associated with the preset first load information of 0% is 5 min (minutes), the test times associated with the preset first load information of 25%, 50%, and 75% are 10 min, and the test time associated with the preset first load information of 100% is 60 min.

[0071] The preset first load information and the test time associated with the preset first load information can be set by the test personnel based on the performance requirements of the shaft generator.

[0072] S304. Adjust the load parameters of the shaft generator to the preset first load information through the load test device.

[0073] The method of adjusting the load parameters of the shaft generator to the preset first load information through the load test device can be to adjust the resistive load in the load test device to adjust the load parameters of the shaft generator to the preset first load information.

[0074] S305. Obtain the load test record data during the test time; wherein, the load test record data includes at least one of current data, voltage data, frequency data, power factor data, and the rotational speed data of the ship engine.

[0075] The load test record data can refer to a series of parameter data that can reflect the operating state of the shaft generator collected and recorded during the load test of the shaft generator; the load test record data can include current data, voltage data, frequency data, power factor data, and the rotational speed data of the ship engine, etc.; the load test record data can be collected by relevant professional sensors.

[0076] Current refers to the directional movement of electric charges in a conductor, and current data represents the amount of electric charge passing through the cross-section of the conductor per unit time; voltage data represents the ability of the electric field force to do work on electric charges; frequency data refers to the number of periodic changes of alternating current per unit time; power factor data is an important indicator to measure the energy utilization efficiency of electrical equipment and is the ratio of active power to apparent power; the rotational speed data of the ship engine refers to the number of revolutions per minute of the crankshaft of the ship engine. Among them, the ship engine is the engine that provides power for the ship, and its main function is to convert the chemical energy of fuel into mechanical energy to drive the ship to sail; in this solution, the ship engine can be a 2-stroke dual-fuel main engine.

[0077] S306. Determine the load test result of the shaft generator according to the preset first load information, the test time, and the load test record data.

[0078] The method of determining the load test result of the shaft generator according to the preset first load information, the test time, and the load test record data can be to directly integrate the preset first load information, the test time, and the load test record data to obtain the load test result of the shaft generator.

[0079] The advantage of this solution is that by adjusting the load parameters of the shaft generator to at least two preset first load information through the load test device and obtaining the load test record data during the test time, the performance of the shaft generator can be comprehensively analyzed from multiple working condition dimensions, and the output stability differences of the shaft generator under light load or heavy load conditions can be accurately identified.

[0080] Embodiment III

[0081] Figure 4 It is a schematic flow chart of the shaft generator test method for a dual-fuel ship provided in Embodiment III of the present application. This solution makes a better improvement on Embodiment I. The specific improvement is as follows: Based on the second power distribution device, a sudden load addition and removal test is performed to obtain the sudden load addition and removal test results of the shaft generator, including: when the load parameter of the shaft generator is the rated load, adjusting the load parameter of the shaft generator to 0 through the load test device; and / or, obtaining at least two preset second load information, and adjusting the load parameter of the shaft generator to the preset second load information through the load test device; obtaining the sudden load addition and removal test record data; wherein, the sudden load addition and removal test record data includes at least one of instantaneous speed regulation rate data, steady speed regulation rate data, steady state recovery time data, instantaneous voltage data, and steady voltage data; determining the sudden load addition and removal test results of the shaft generator according to the sudden load addition and removal test record data.

[0082] As Figure 4 shown, it specifically includes the following steps:

[0083] S401, connect all the electrical load devices of the dual-fuel ship to the first power distribution device;

[0084] S402, cut off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0085] S403, when the load parameter of the shaft generator is the rated load, adjust the load parameter of the shaft generator to 0 through the load test device;

[0086] and / or,

[0087] Obtain at least two preset second load information, and adjust the load parameter of the shaft generator to the preset second load information through the load test device;

[0088] Optionally, during the sudden load increase and sudden load decrease test, the rotational speed of the ship's engine needs to be maintained at a fixed value, such as 75 rpm (revolutions per minute); and when the load parameter of the shaft generator is less than or equal to 100%, the power factor of the shaft generator is set to a preset value, such as 0.8.

[0089] The rated load can refer to the maximum load capacity that the shaft generator can continuously and stably operate as specified during design and manufacturing, that is, the load parameter is 100%. To adjust the load parameter of the shaft generator to 0 through the load test device, the circuit breaker in the load test device can be turned off.

[0090] The preset second load information can refer to the specific value that the load parameter of the shaft generator should reach in the sudden load increase and sudden load decrease test, which can include 0%, 33%, 66%, and 100%, etc. The preset second load information can be set by the tester based on the performance requirements of the shaft generator. To adjust the load parameter of the shaft generator to the preset second load information through the load test device, the load parameter of the shaft generator can be adjusted from a lower-level preset second load information to a higher-level preset second load information through the load test device, such as from 0% to 33%, from 33% to 66%, and from 66% to 100%.

[0091] S404, obtain the sudden load increase and sudden load decrease test record data; wherein, the sudden load increase and sudden load decrease test record data includes at least one of the instantaneous speed regulation rate data, steady-state speed regulation rate data, steady-state recovery time data, instantaneous voltage data, and steady-state voltage data;

[0092] The sudden load increase and sudden load decrease test record data can refer to a series of parameter data that can reflect the operating state of the shaft generator collected and recorded during the sudden load increase and sudden load decrease test of the shaft generator; the sudden load increase and sudden load decrease test record data can include the instantaneous speed regulation rate data, steady-state speed regulation rate data, steady-state recovery time data, instantaneous voltage data, and steady-state voltage data, etc.; the sudden load increase and sudden load decrease test record data can be calculated and analyzed based on the data collected by relevant professional sensors.

[0093] The transient speed regulation rate data refers to the instantaneous change rate of the rotational speed of the shaft generator when the load parameters of the shaft generator suddenly change, and the corresponding index threshold can be 10%; the steady-state speed regulation rate data refers to the change rate of the rotational speed of the shaft generator when the shaft generator returns to a steady state (the change rate of the rotational speed of the shaft generator does not exceed 1%) after the load parameters of the shaft generator start to change, and the corresponding index threshold can be 5%; the steady-state recovery time data refers to the duration from when the load parameters of the shaft generator start to change to when the shaft generator returns to a steady state, and the corresponding index threshold can be 5 seconds; the instantaneous voltage data refers to the instantaneous measured value of the output terminal voltage of the shaft generator during the change process of the load parameters of the shaft generator; the steady-state voltage data refers to the value at which the output terminal voltage of the shaft generator reaches a stable and unchanged value after the load parameters of the shaft generator start to change.

[0094] S405. Determine the load rejection and application test results of the shaft generator according to the load rejection and application test record data.

[0095] The method for determining the load rejection and application test results of the shaft generator according to the load rejection and application test record data can be to compare the load rejection and application test record data with the corresponding index thresholds of the load rejection and application test record data to determine whether the load rejection and application test record data meet the preset index regulations, and integrate each comparison result to obtain the load rejection and application test results of the shaft generator.

[0096] The advantage of this solution is that by adjusting the load parameters of the shaft generator to 0 through the load test device when the load parameters of the shaft generator are at the rated load, and / or adjusting the load parameters of the shaft generator to at least two preset second load information through the load test device, and obtaining the load rejection and application test record data such as the transient speed regulation rate data, the steady-state speed regulation rate data, the steady-state recovery time data, the instantaneous voltage data, and the steady-state voltage data, the dynamic response ability and stability of the shaft generator under extreme load change conditions can be comprehensively and accurately evaluated.

[0097] Embodiment 4

[0098] Figure 5It is a schematic flow chart of the shaft generator test method for a dual-fuel ship provided in Embodiment 4 of this application. This solution makes a better improvement on Embodiment 1. The specific improvement is that at least one dual-fuel generator is also connected to the second power distribution device; correspondingly, a synchronization and paralleling test is carried out based on the second power distribution device to obtain the synchronization and paralleling test results of the shaft generator, including: controlling the shaft generator to operate in parallel with the dual-fuel generator; obtaining the synchronization and paralleling test record data; wherein, the synchronization and paralleling test record data includes at least one of the current data, voltage data, frequency data, power data, and power factor data of the shaft generator and the dual-fuel generator; determining the synchronization and paralleling test results of the shaft generator according to the synchronization and paralleling test record data.

[0099] As Figure 5 shown, it specifically includes the following steps:

[0100] S501, connect all the electrical load devices of the dual-fuel ship to the first power distribution device;

[0101] S502, cut off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, the second power distribution device is connected to the shaft generator and the load test device; at least one dual-fuel generator is also connected to the second power distribution device;

[0102] Connecting at least one dual-fuel generator to the second power distribution device can be used to test the parallel operation performance between the dual-fuel generator connected to the second power distribution device and the shaft generator.

[0103] S503, control the shaft generator to operate in parallel with the dual-fuel generator;

[0104] It can be understood that before controlling the shaft generator to operate in parallel with the dual-fuel generator, it is necessary to keep the shaft generator in the standby state and the load test device in the available state.

[0105] The parallel operation of the shaft generator and the dual-fuel generator can refer to an operation mode in which the shaft generator and the dual-fuel generator supply power to the load test device at the same time. The actual operation of controlling the shaft generator to operate in parallel with the dual-fuel generator can be realized through the power station PMS (Power Management System), or by manually starting the shaft generator on the main switchboard.

[0106] Optionally, after the shaft generator is operated in parallel with the dual-fuel generator, it is necessary to maintain the rotational speed of the ship engine at a fixed value, such as 75 rpm (revolutions per minute); the power factor of the shaft generator is a preset value, such as 0.8; and the load distribution function is in the manual mode.

[0107] S504. Obtain the synchronous paralleling test record data; wherein, the synchronous paralleling test record data includes at least one of the current data, voltage data, frequency data, power data, and power factor data of the shaft generator and the dual-fuel generator.

[0108] The synchronous paralleling test record data may refer to a series of parameter data that can reflect the operating states of the shaft generator and the dual-fuel generator, which are collected and recorded during the synchronous paralleling test of the shaft generator; the synchronous paralleling test record data may include the current data, voltage data, frequency data, power factor data of the shaft generator and the dual-fuel generator, as well as the rotational speed data of the ship engine, etc.; the synchronous paralleling test record data can be collected by relevant professional sensors.

[0109] S505. Determine the synchronous paralleling test result of the shaft generator according to the synchronous paralleling test record data.

[0110] The method for determining the synchronous paralleling test result of the shaft generator according to the synchronous paralleling test record data can be to directly integrate the synchronous paralleling test record data to obtain the synchronous paralleling test result of the shaft generator.

[0111] In this technical solution, optionally, after controlling the shaft generator to operate in parallel with the dual-fuel generator, the method further includes:

[0112] Obtain the load distribution test record data; wherein, the load distribution test record data includes the difference data between the active load of the shaft generator and the dual-fuel generator and the proportionally allocated active load according to the quota, the difference data between the reactive load and the proportionally allocated reactive load according to the quota, and the current fluctuation amplitude data.

[0113] The load distribution test record data may refer to a series of parameter data that can reflect the load distribution states of the shaft generator and the dual-fuel generator, which are collected and recorded during the synchronous paralleling test of the shaft generator; the load distribution test record data may include the difference data between the active load of the shaft generator and the dual-fuel generator and the proportionally allocated active load according to the quota, the difference data between the reactive load and the proportionally allocated reactive load according to the quota, and the current fluctuation amplitude data.

[0114] The active load may refer to the actual active power of the shaft generator / dual-fuel generator collected; the rated proportionally distributed active load may refer to the product of the ratio of the rated active power of the shaft generator / dual-fuel generator in the total rated active power of all generators and the total active load; the index threshold of the difference data between the active load of the shaft generator and the dual-fuel generator and the rated proportionally distributed active load may be between ±15% of the rated active power of the generator with the largest rated active power.

[0115] The reactive load may refer to the actual reactive power of the shaft generator / dual-fuel generator collected; the rated proportionally distributed reactive load may refer to the product of the ratio of the rated reactive power of the shaft generator / dual-fuel generator in the total rated reactive power of all generators and the total reactive load; the index threshold of the difference data between the reactive load of the shaft generator and the dual-fuel generator and the rated proportionally distributed reactive load may be between ±10% of the rated reactive power of the generator with the largest rated reactive power.

[0116] The current fluctuation amplitude data may refer to the range of change in the current data deviating from its average level or set value during the synchronous paralleling test, which may be equal to the difference between the maximum value and the minimum value.

[0117] The load distribution test record data can be calculated and analyzed based on the data collected by relevant professional sensors.

[0118] The advantage of setting the solution in this way is that by obtaining the difference data between the active load of the shaft generator and the dual-fuel generator and the rated proportionally distributed active load, the difference data between the reactive load and the rated proportionally distributed reactive load, and the current fluctuation amplitude data and other load distribution test record data, the balance and rationality of the load distribution among generators can be accurately evaluated, and potential problems such as power distribution imbalance or abnormal current fluctuation during the operation of the generators can be discovered in a timely manner.

[0119] The advantage of setting the solution in this way is that by controlling the parallel operation of the shaft generator and the dual-fuel generator and obtaining the current data, voltage data, frequency data, power data, and power factor data and other synchronous paralleling test record data of the shaft generator and the dual-fuel generator, the compatibility and stability of the parallel operation of the shaft generator and the dual-fuel generator can be comprehensively verified.

[0120] Embodiment 5

[0121] Figure 6It is a schematic flow chart of the shaft generator test method for a dual-fuel ship provided in Embodiment 5 of this application. This solution makes a better improvement to Embodiment 1. The specific improvement is as follows: Based on the second power distribution device, a standby generator self-start test is carried out to obtain the standby generator self-start result of the shaft generator, including: selecting a dual-fuel generator as the standby generator; obtaining the access status of the standby generator when the shaft generator fails; and / or, obtaining the access status of the shaft generator and the standby generator when the operating parameters of the ship engine change; and / or, obtaining the access status of the standby generator when the load parameter of the shaft generator exceeds the first preset load threshold; and / or, obtaining the access status of the standby generator when the shaft generator is operating in parallel with the dual-fuel generator and the load parameter of the standby generator is less than the second preset load threshold.

[0122] As Figure 6 shown, it specifically includes the following steps:

[0123] S601, connect all the electrical load devices of the dual-fuel ship to the first power distribution device;

[0124] S602, cut off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0125] S603, select a dual-fuel generator as the standby generator;

[0126] The standby generator can refer to the backup device of the main generator (here refers to the shaft generator); when the main generator fails, cannot work properly or there are other special requirements in the system, the standby generator can start and be connected to the power system to ensure the continuity of power supply; a dual-fuel generator can be selected as the standby generator based on the performance requirements of the standby generator.

[0127] S604, obtain the access status of the standby generator when the shaft generator fails;

[0128] and / or,

[0129] obtain the access status of the shaft generator and the standby generator when the operating parameters of the ship engine change;

[0130] and / or,

[0131] obtain the access status of the standby generator when the load parameter of the shaft generator exceeds the first preset load threshold;

[0132] and / or

[0133] When the shaft generator operates in parallel with the standby generator and the load parameter of the standby generator is less than the second preset load threshold, obtain the access status of the standby generator.

[0134] The access status of the shaft generator / standby generator may refer to the situation where the shaft generator / standby generator is connected to the second power distribution device and is in a power supply working state. The access status of the shaft generator / standby generator can be directly read.

[0135] The failure of the shaft generator may refer to the situation where the shaft generator cannot supply power normally. When the shaft generator fails, the access status of the standby generator should be connected to the second power distribution device and in a power supply working state to provide power supply by the standby generator when the shaft generator cannot supply power normally.

[0136] The operating parameters of the ship engine may include the rotational speed, torque, temperature, and pressure of the ship engine, etc.; in this solution, the operating parameter of the ship engine may particularly refer to the rotational speed of the ship engine. When the operating parameters of the ship engine change, the access status of the shaft generator should be not connected to the second power distribution device, and the access status of the standby generator should be connected to the second power distribution device and in a power supply working state to provide stable power supply by the standby generator when the operating parameters of the ship engine change, that is, when the output of the shaft generator is unstable and affects power supply.

[0137] The first preset load threshold may be a preset lower limit of the load parameter of the shaft generator indicating that the shaft generator is overloaded. When the load parameter of the shaft generator exceeds the first preset load threshold, the access status of the standby generator should be connected to the second power distribution device and in a power supply working state so that the standby generator can share the load when the shaft generator is overloaded.

[0138] The second preset load threshold may be a preset upper limit of the load parameter of the standby generator indicating that the standby generator is underloaded. When the shaft generator operates in parallel with the standby generator and the load parameter of the standby generator is less than the second preset load threshold, the access status of the standby generator should be not connected to the second power distribution device to avoid the standby generator being in a low-load and inefficient operating state for a long time and reducing equipment loss and energy waste.

[0139] The advantage of this solution is that by obtaining the access status of the shaft generator and / or the standby generator in the case of a failure of the shaft generator, and / or in the case of a change in the operating parameters of the ship's engine, and / or in the case of the load parameter of the shaft generator exceeding the first preset load threshold, and / or in the case of the shaft generator and the standby generator operating in parallel and the load parameter of the standby generator being less than the second preset load threshold, the stability and reliability of the ship's power system in the case of equipment failure, operating condition fluctuations or load imbalance can be determined.

[0140] Embodiment Six

[0141] Figure 7 It is a schematic structural diagram of a shaft generator test device for a dual-fuel ship provided in Embodiment Six of the present application. As Figure 7 shown, the device includes:

[0142] An electrical load access module 710 for connecting all electrical load devices of the dual-fuel ship to the first power distribution device;

[0143] A power distribution connection cutting module 720 for cutting off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device;

[0144] A shaft generator test module 730 for performing a shaft generator test based on the second power distribution device to obtain a test result of the shaft generator.

[0145] In an embodiment of the present application, an electrical load access module is used to connect all electrical load devices of the dual-fuel ship to the first power distribution device; a power distribution connection cutting module is used to cut off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device; a shaft generator test module is used to perform a shaft generator test based on the second power distribution device to obtain a test result of the shaft generator. The above shaft generator test device for a dual-fuel ship can avoid the situation of no power supply to electrical load devices caused by abnormal shaft generator test failures by connecting electrical load devices to the first power distribution device and cutting off the connection between the first power distribution device and the second power distribution device, and performing a shaft generator test based on the second power distribution device, thereby improving the navigation safety and reliability of the ship during the test process.

[0146] The shaft generator test device for a dual-fuel ship in the embodiments of the present application can be a device, or a component, integrated circuit, or chip in a terminal. This device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The non-mobile electronic device can be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiments of the present application do not make specific limitations.

[0147] The shaft generator test device for a dual-fuel ship in the embodiments of the present application can be a device with an operating system. This operating system can be the Android operating system, the IOS operating system, or other possible operating systems. The embodiments of the present application do not make specific limitations.

[0148] The shaft generator test device for a dual-fuel ship provided in the embodiments of the present application can implement each process implemented in the above-mentioned Embodiments 1 to 5. To avoid repetition, it will not be elaborated here.

[0149] Embodiment 7

[0150] As Figure 8 shown, the embodiments of the present application also provide an electronic device 800, including a processor 801, a memory 802, and a program or instruction stored on the memory 802 and executable on the processor 801. When the program or instruction is executed by the processor 801, it implements each process of the above-mentioned embodiment of the shaft generator test method for a dual-fuel ship and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0151] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0152] Embodiment 8

[0153] The embodiments of the present application also provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned embodiment of the shaft generator test method for a dual-fuel ship and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0154] Among them, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media such as computer read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0155] Embodiment Nine

[0156] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above-mentioned embodiment of the shaft generator test method for dual-fuel ships, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0157] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0158] It should be noted that in this article, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article, or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0159] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) and includes several instructions for causing a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0160] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can still make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

[0161] The above is only the preferred embodiment of the present application and the technical principles applied. The present application is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments and substitutions that can be made by those skilled in the art will not depart from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments. Without departing from the concept of the present application, it may also include more other equivalent embodiments, and the scope of the present application is determined by the scope of the claims.

Claims

1. A test method for shaft generator of a dual-fuel ship, characterized in that, The dual-fuel ship is equipped with a dual-fuel generator, a shaft generator, electrical load equipment, a load test device, and a power distribution device. The power distribution device includes a first power distribution device and a second power distribution device. The method includes: Connect all the electrical load equipment of the dual-fuel ship to the first power distribution device; Cut off the connection between the first power distribution device and the second power distribution device. Wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device; Conduct a shaft generator test based on the second power distribution device to obtain the test result of the shaft generator.

2. The test method for the shaft generator of a dual-fuel ship according to claim 1, characterized in that, Conduct a shaft generator test based on the second power distribution device to obtain the test result of the shaft generator, including: Conduct a load test based on the second power distribution device to obtain the load test result of the shaft generator; and / or, Conduct a sudden load addition and sudden load removal test based on the second power distribution device to obtain the sudden load addition and sudden load removal test result of the shaft generator; and / or, Conduct a synchronization and paralleling test based on the second power distribution device to obtain the synchronization and paralleling test result of the shaft generator; and / or, Conduct a standby generator self-start test based on the second power distribution device to obtain the standby generator self-start result of the shaft generator.

3. The test method of the shaft generator of the dual-fuel ship according to claim 2, characterized in that, Conduct a load test based on the second power distribution device to obtain the load test result of the shaft generator, including: Obtain at least two preset first load information and the test time associated with the preset first load information; Adjust the load parameters of the shaft generator to the preset first load information through the load test device; Obtain the load test record data during the test time. Wherein, the load test record data includes at least one of current data, voltage data, frequency data, power factor data, and the rotational speed data of the ship engine; Determine the load test result of the shaft generator according to the preset first load information, the test time, and the load test record data.

4. The test method for the shaft generator of the dual-fuel ship according to claim 2, characterized in that, Conduct a sudden load addition and sudden load removal test based on the second power distribution device to obtain the sudden load addition and sudden load removal test result of the shaft generator, including: When the load parameter of the shaft generator is the rated load, adjust the load parameter of the shaft generator to 0 through the load test device; and / or, Obtain at least two preset second load information, and adjust the load parameters of the shaft generator to the preset second load information through the load test device; Obtain the sudden load addition and sudden load removal test record data. Wherein, the sudden load addition and sudden load removal test record data includes at least one of instantaneous speed regulation rate data, stable speed regulation rate data, steady-state recovery time data, instantaneous voltage data, and stable voltage data; Determine the sudden load addition and sudden load removal test result of the shaft generator according to the sudden load addition and sudden load removal test record data.

5. The test method for the shaft generator of a dual-fuel ship according to claim 2, characterized in that The second power distribution device is also connected to at least one dual-fuel generator; Correspondingly, conduct a synchronization and paralleling test based on the second power distribution device to obtain the synchronization and paralleling test result of the shaft generator, including: Control the shaft generator to operate in parallel with the dual-fuel generator; Obtain synchronous paralleling test record data; wherein, the synchronous paralleling test record data includes at least one of current data, voltage data, frequency data, power data, and power factor data of the shaft generator and the dual-fuel generator. Determine the synchronous paralleling test result of the shaft generator according to the synchronous paralleling test record data.

6. The test method for the shaft generator of a dual-fuel ship according to claim 5, characterized in that, After controlling the shaft generator and the dual-fuel generator to operate in parallel, the method further includes: Obtain load distribution test record data; wherein, the load distribution test record data includes difference data between the active load of the shaft generator and the dual-fuel generator and the active load distributed according to the rated ratio, difference data between the reactive load and the reactive load distributed according to the rated ratio, and current fluctuation amplitude data.

7. The test method for the shaft generator of the dual-fuel ship according to claim 2, characterized in that, Based on the second power distribution device, perform a standby generator self-start test on the shaft generator to obtain the standby generator self-start result of the shaft generator, including: Select a dual-fuel generator as the standby generator; In the case of a failure of the shaft generator, obtain the access status of the standby generator; And / or, In the case of a change in the operating parameters of the ship engine, obtain the access status of the shaft generator and the standby generator; And / or, In the case that the load parameter of the shaft generator exceeds a first preset load threshold, obtain the access status of the standby generator; And / or, In the case that the shaft generator and the standby generator operate in parallel and the load parameter of the standby generator is less than a second preset load threshold, obtain the access status of the standby generator.

8. An shaft generator test device for a dual-fuel ship, characterized in that, The dual-fuel ship is configured with a dual-fuel generator, a shaft generator, electrical load equipment, a load test device, and a power distribution device, and the power distribution device includes a first power distribution device and a second power distribution device; the device includes: An electrical load access module for connecting all electrical load equipment of the dual-fuel ship to the first power distribution device; A power distribution connection cut-off module for cutting off the connection between the first power distribution device and the second power distribution device; wherein, the first power distribution device is connected to at least one dual-fuel generator, and the second power distribution device is connected to the shaft generator and the load test device; A shaft generator test module for performing a shaft generator test based on the second power distribution device to obtain the test result of the shaft generator.

9. An electronic device, characterized in that, It includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements the steps of the shaft generator test method for a dual-fuel ship as described in any one of claims 1-7.

10. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, it implements the steps of the shaft generator test method for a dual-fuel ship as described in any one of claims 1-7.

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