A fault control method, device, equipment and medium of a ship

Abstract

The application provides a fault control method, device, equipment and medium of a ship, wherein the method comprises: acquiring a first current value and a first voltage value of a target port; calculating a first output equivalent impedance value of the target port according to the first current value and the first voltage value of the target port; judging whether a target ship load is faulty according to the first output equivalent impedance value and an impedance threshold value of the target ship load; if the target ship load is faulty, controlling a first target switch to be turned off, the first target switch being arranged between the target port and the target ship load and being used for controlling whether the target port supplies power to the target ship load. The method can effectively diagnose whether the target ship load is faulty, effectively isolate the power output from the target port to the target ship load when the fault occurs, and achieve the effect of isolating the fault and protecting the navigation safety of the ship.

Description

Technical Field

[0001] This application relates to the field of ship control technology, and more specifically, to a ship fault control method, device, equipment, and medium. Background Technology

[0002] Currently, load failures are among the most common faults in ship electrical systems, accounting for over 80% of all failures. Types of load failures include phase-to-phase short circuits and grounding faults. When a load failure occurs, it needs to be detected and isolated quickly.

[0003] In shipboard power distribution systems, hybrid energy storage systems comprising batteries and supercapacitors are connected to the DC bus via converters. During load faults, the energy storage system, along with the power supply, outputs a short-circuit current. The current-limiting function of the power converter presents new challenges for short-circuit fault protection. Although the energy of the fault current is limited, its amplitude and gradient are very close to inrush current and overcurrent, making fault diagnosis more difficult. This makes traditional fault diagnosis methods unsuitable for shipboard multi-terminal DC power distribution systems. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a fault control method, device, equipment and medium for ships, which can determine whether there is a fault in the target ship load by measuring and calculating the output equivalent impedance value of the target port, and control the target switch. This solves the problem that traditional fault diagnosis methods in the prior art are difficult to apply to the multi-terminal DC power distribution system of ships, and achieves effective diagnosis of whether there is a fault in the target ship load. When a fault occurs, it can effectively isolate the electrical energy output from the target port to the target ship load, thereby achieving the effect of isolating the fault and protecting the navigation safety of the ship.

[0005] In a first aspect, embodiments of this application provide a fault control method for a ship, the method comprising: acquiring a first current value and a first voltage value of a target port, the target port being a power supply port in the ship's power supply circuit that is closest to a target ship load and is used to supply power to the target ship load; calculating a first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port; determining whether the target ship load has a fault based on the first output equivalent impedance value and an impedance threshold of the target ship load; and if the target ship load has a fault, controlling a first target switch to open, the first target switch being disposed between the target port and the target ship load, used to control whether the target port supplies power to the target ship load.

[0006] Optionally, the first target switch is controlled to disconnect by the following steps: after determining that the target ship load has a fault and this fault lasts for a preset time, a second current value and a second voltage value of the target port are obtained; based on the second current value and the second voltage value of the target port, a second output equivalent impedance value of the target port is calculated; based on the second output equivalent impedance value and the impedance threshold of the target ship load, it is determined whether the target ship load still has a fault; if the target ship load still has a fault, the first target switch is controlled to disconnect.

[0007] Optionally, the target port is connected to the ship's main power supply so that the main power supply can supply power to the target ship load. The ship also includes a backup power supply. The method further includes: determining whether the first target switch is disconnected; if so, controlling the second target switch to close, the second target switch being used to control whether the backup power supply supplies power to the target ship load.

[0008] Optionally, the method further includes: acquiring a third current value and a third voltage value of a target port, the target port being connected to the ship's backup power supply so that the backup power supply can supply power to the target ship load; calculating a third output equivalent impedance value of the target port based on the third current value and the third voltage value of the target port; determining whether the target ship load has a fault based on the third output equivalent impedance value and the impedance threshold of the target ship load; and if the target ship load has a fault, controlling the second target switch to disconnect.

[0009] Optionally, the second target switch is controlled to disconnect by the following steps: after determining that the target ship load has a fault and this fault persists for a preset time, the fourth current value and the fourth voltage value of the target port are obtained; based on the fourth current value and the fourth voltage value of the target port, the fourth output equivalent impedance value of the target port is calculated; based on the fourth output equivalent impedance value and the impedance threshold of the target ship load, it is determined whether the target ship load still has a fault; if the target ship load still has a fault, the second target switch is controlled to disconnect.

[0010] Optionally, the impedance threshold of the target ship load is determined by the following steps: calculating an intermediate impedance value based on the rated voltage and rated power of the target ship load; determining whether the intermediate impedance value is greater than the maximum load impedance value of the ship; if the intermediate impedance value is greater than the maximum load impedance value of the ship, then the maximum load impedance value of the ship is determined as the impedance threshold of the target ship load; if the intermediate impedance value is less than or equal to the maximum load impedance value of the ship, then the intermediate impedance value of the ship is determined as the impedance threshold of the target ship load.

[0011] Optionally, the intermediate impedance value can be calculated based on the rated voltage and rated power values ​​of the target ship load using the following formula:

[0012]

[0013] Where Z is the intermediate impedance value, V is the rated voltage value of the target ship load, and P is the rated power value of the target ship load.

[0014] Secondly, embodiments of this application also provide a fault control device for a ship. The device includes a filter circuit, a first target switch, and a control module. One end of the first target switch is connected to the positive terminal of a target port, and the other end of the first target switch is connected to one end of the filter circuit. The other end of the filter circuit is connected to the positive terminal of a target ship load, and the negative terminal of the target ship load is connected to the negative terminal of the target port. The data detection terminal of the control module is connected between the positive terminal of the target port and the first target switch to obtain a first current value and a first voltage value of the target port. The control terminal of the control module is connected to the control terminal of the first target switch to control the closing or opening of the first target switch. The control module includes:

[0015] The target port measurement unit is used to acquire the first current value and the first voltage value of the target port, wherein the target port is the power supply port that is closest to the target ship load in the ship's power supply circuit and is used to supply power to the target ship load;

[0016] The first output equivalent impedance value calculation unit is used to calculate the first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port.

[0017] The target ship load fault determination unit is used to determine whether the target ship load has a fault based on the first output equivalent impedance value and the impedance threshold of the target ship load.

[0018] The first target switch control unit is used to control the first target switch to open if the target ship load has a fault. The first target switch is located between the target port and the target ship load and is used to control whether the target port supplies power to the target ship load.

[0019] Thirdly, embodiments of this application also provide an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the ship fault control method described above are performed.

[0020] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program that, when executed by a processor, performs the steps of the ship fault control method described above.

[0021] This application provides a ship fault control method, device, equipment, and medium. By measuring and calculating the output equivalent impedance value of the target port, it determines whether there is a fault in the target ship load and controls the target switch. This solves the problem that traditional fault diagnosis methods in the prior art are difficult to apply to the multi-terminal DC power distribution system of ships. It effectively diagnoses whether there is a fault in the target ship load and effectively isolates the electrical energy output from the target port to the target ship load when a fault occurs, thereby achieving the effect of isolating the fault and protecting the navigation safety of the ship.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A flowchart illustrating a ship fault control method provided in an embodiment of this application;

[0025] Figure 2 A flowchart illustrating another ship fault control method provided in this application embodiment;

[0026] Figure 3 A schematic diagram of the structure of a ship fault control device provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of a control module provided in an embodiment of this application;

[0028] Figure 5 This application provides a schematic diagram of the structure of an electronic device. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0030] First, the applicable scenarios for this application will be introduced. This application can be applied to the field of ship control technology.

[0031] Research has revealed that load failures are among the most common faults in ship electrical systems, accounting for over 80% of all failures. Types of load failures include phase-to-phase short circuits and grounding faults. When a load failure occurs, it is crucial to detect and isolate it quickly.

[0032] In shipboard power distribution systems, hybrid energy storage systems comprising batteries and supercapacitors are connected to the DC bus via converters. During load faults, the energy storage system, along with the power supply, outputs a short-circuit current. The current-limiting function of the power converter presents new challenges for short-circuit fault protection. Although the energy of the fault current is limited, its amplitude and gradient are very close to inrush current and overcurrent, making fault diagnosis more difficult. This makes traditional fault diagnosis methods unsuitable for shipboard multi-terminal DC power distribution systems.

[0033] Based on this, embodiments of this application provide a fault control method, apparatus, equipment, and medium for ships, which can effectively diagnose whether there is a fault in the target ship's load, and effectively isolate the electrical energy output from the target port to the target ship's load when a fault occurs, thereby achieving the effect of isolating the fault and protecting the ship's navigation safety.

[0034] Please see Figure 1 , Figure 1 This is a flowchart illustrating a ship fault control method provided in an embodiment of this application. Figure 1 As shown in the embodiments of this application, the ship fault control method includes:

[0035] S101. Obtain the first current value and the first voltage value of the target port.

[0036] The target port is the power supply port in the ship's power supply circuit that is closest to the target ship load and is used to supply power to the target ship load.

[0037] S102. Calculate the first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port.

[0038] Specifically, the first output equivalent impedance value can be calculated using the following formula:

[0039]

[0040] Among them, Z eq1 V1 is the first output equivalent impedance value, V1 is the first voltage value, and I1 is the first current value.

[0041] S103. Based on the first output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load has a fault.

[0042] Specifically, the impedance threshold of the target ship load can be determined through the following steps: Calculate the intermediate impedance value based on the rated voltage and rated power of the target ship load; determine whether the intermediate impedance value is greater than the maximum load impedance value of the ship; if the intermediate impedance value is greater than the maximum load impedance value of the ship, then the maximum load impedance value of the ship is determined as the impedance threshold of the target ship load; if the intermediate impedance value is less than or equal to the maximum load impedance value of the ship, then the intermediate impedance value of the ship is determined as the impedance threshold of the target ship load.

[0043] The intermediate impedance value can be calculated using the following formula based on the rated voltage and rated power of the target ship load:

[0044]

[0045] Among them, Z r V is the intermediate impedance value, V is the rated voltage value of the target ship load, and P is the rated power value of the target ship load.

[0046] Here, the normal calculation of the impedance value of the target ship load is the rated voltage value divided by the rated power value. However, in this application, the square of the rated voltage value should be used to calculate the impedance value. In this way, a redundancy in fault measurement is provided between normal working conditions and fault working conditions, ensuring that the fault will not be misjudged due to a short-term increase in the load of the target load.

[0047] S104. If the target ship's load is faulty, the first target switch is disconnected.

[0048] The first target switch is located between the target port and the target ship load, and is used to control whether the target port supplies power to the target ship load.

[0049] Specifically, the first target switch can be turned off through the following steps; please refer to [link / reference]. Figure 2 , Figure 2 A flowchart illustrating another ship fault control method provided in this application embodiment. Figure 2 As shown in the embodiments of this application, the ship fault control method includes:

[0050] S201. After determining that the target ship's load has a fault and that the fault lasts for a preset time, obtain the second current value and the second voltage value of the target port.

[0051] S202. Calculate the second output equivalent impedance value of the target port based on the second current value and the second voltage value of the target port.

[0052] Specifically, the second output equivalent impedance value can be calculated using the following formula:

[0053]

[0054] Among them, Z eq2 V2 is the second output equivalent impedance value, V2 is the second voltage value, and I2 is the second current value.

[0055] S203. Based on the second output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load still has a fault;

[0056] S204. If the target ship load still has a fault, then control the first target switch to disconnect.

[0057] In this way, by setting a preset time and then judging the load of the target ship after the preset time delay, it is possible to avoid misjudgment of faults when the load of the target ship is started up or when a high-power load is connected and causes system oscillation.

[0058] Optionally, the target port is connected to the ship's main power supply so that the main power supply can supply power to the target ship load. The ship also includes a backup power supply. The method further includes: determining whether the first target switch is disconnected; if so, controlling the second target switch to close, the second target switch being used to control whether the backup power supply supplies power to the target ship load.

[0059] In this way, when a load abnormality occurs on the normal power supply line, it is possible to try to continue supplying power to the target ship's load from the backup power source.

[0060] Specifically, when the output of the backup power supply is used as the target port to supply power to the target ship load, the method further includes: obtaining a third current value and a third voltage value of the target port, the target port being connected to the ship's backup power supply so that the backup power supply supplies power to the target ship load; calculating a third output equivalent impedance value of the target port based on the third current value and the third voltage value of the target port; determining whether the target ship load has a fault based on the third output equivalent impedance value and the impedance threshold of the target ship load; and if the target ship load has a fault, controlling the second target switch to disconnect.

[0061] The second target switch can be controlled to disconnect by the following steps: after determining that the target ship load has a fault and this fault has persisted for a preset time, the fourth current value and the fourth voltage value of the target port are obtained; based on the fourth current value and the fourth voltage value of the target port, the fourth output equivalent impedance value of the target port is calculated; based on the fourth output equivalent impedance value and the impedance threshold of the target ship load, it is determined whether the target ship load still has a fault; if the target ship load still has a fault, the second target switch is controlled to disconnect.

[0062] The description of the fault control method when the output of the backup power supply is used as the target port to supply power to the target ship load can be referred to in S101 to S104, and the same technical effect can be achieved, so it will not be elaborated here.

[0063] In this way, when the ship switches to backup power to supply power to the target load, the above method isolates the ship's faults, thereby ensuring the ship's navigation safety.

[0064] Optionally, the method further includes: determining whether the first current value is less than zero; if the first current value is less than zero, then controlling the first target switch to open.

[0065] This ensures that if the current direction is incorrect, the target ship load will be protected from damage due to the incorrect current direction by disconnecting the target switch.

[0066] The ship fault control method provided in this application determines whether there is a fault in the target ship load by measuring and calculating the output equivalent impedance value of the target port, and controls the target switch. This solves the problem that traditional fault diagnosis methods in the prior art are difficult to apply to the multi-terminal DC power distribution system of ships. It effectively diagnoses whether there is a fault in the target ship load, and effectively isolates the electrical energy output from the target port to the target ship load when a fault occurs, thereby achieving the effect of isolating the fault and protecting the navigation safety of the ship.

[0067] Based on the same inventive concept, this application also provides a ship fault control device corresponding to the ship fault control method. Since the principle of the device in this application is similar to the ship fault control method described above in this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0068] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a ship fault control device provided in an embodiment of this application. Figure 3 As shown, the ship's fault control device includes: target port 301, filter circuit 303, first target switch 302, control module 304 and target ship load 305.

[0069] In this configuration, one end of the first target switch 302 is connected to the positive terminal of the target port 301, and the other end of the first target switch 302 is connected to one end of the filter circuit 303. The other end of the filter circuit 303 is connected to the positive terminal of the target ship load 305, and the negative terminal of the target ship load 305 is connected to the negative terminal of the target port 301. The data detection terminal of the control module 304 is connected between the positive terminal of the target port 301 and the first target switch 302 to obtain the first current value and the first voltage value of the target port 301. The control terminal of the control module 304 is connected to the control terminal of the first target switch 302 to control the closing or opening of the first target switch 302.

[0070] In this way, through the filtering of the filter circuit 303, the current and voltage values ​​of the target port 301 can be accurately measured, ensuring the accuracy of the measurement.

[0071] Please see Figure 4 Based on the structure of the aforementioned ship fault control device, Figure 4 This is a schematic diagram of the structure of a control module provided in an embodiment of this application. Figure 4 As shown, the control module 400 includes:

[0072] The target port measurement unit 401 is used to acquire the first current value and the first voltage value of the target port, wherein the target port is the power supply port that is closest to the target ship load in the ship's power supply circuit and is used to supply power to the target ship load.

[0073] The first output equivalent impedance value calculation unit 402 is used to calculate the first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port.

[0074] The target ship load fault determination unit 403 is used to determine whether the target ship load has a fault based on the first output equivalent impedance value and the impedance threshold of the target ship load.

[0075] The first target switch control unit 404 is used to control the first target switch to open if the target ship load has a fault. The first target switch is located between the target port and the target ship load and is used to control whether the target port supplies power to the target ship load.

[0076] The control device provided in this application embodiment can determine whether there is a fault in the target ship load by measuring and calculating the output equivalent impedance value of the target port, and control the target switch. This solves the problem that traditional fault diagnosis methods in the prior art are difficult to apply to the multi-terminal DC power distribution system of ships. It can effectively diagnose whether there is a fault in the target ship load, and effectively isolate the electrical energy output from the target port to the target ship load when a fault occurs, thereby achieving the effect of isolating the fault and protecting the navigation safety of the ship.

[0077] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 5 As shown, the electronic device 500 includes a processor 510, a memory 520, and a bus 530.

[0078] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 and the memory 520 communicate via the bus 530. When the machine-readable instructions are executed by the processor 510, they can perform the operations described above. Figure 1 as well as Figure 2 The steps of the ship fault control method in the method embodiment shown are described in detail in the method embodiment, and will not be repeated here.

[0079] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 1 as well as Figure 2 The steps of the ship fault control method in the method embodiment shown are described in detail in the method embodiment, and will not be repeated here.

[0080] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0082] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0083] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0084] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0085] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A failure control method of a ship, characterized by, The method includes: Acquire the first current value and the first voltage value of the target port, wherein the target port is the power supply port in the ship's power supply circuit that is closest to the target ship load and is used to supply power to the target ship load; Calculate the first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port; Based on the first output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load has a fault; The impedance threshold of the target ship load is determined by the following steps: Calculate an intermediate impedance value based on the rated voltage and rated power of the target ship load; determine whether the intermediate impedance value is greater than the maximum load impedance value of the ship; if the intermediate impedance value is greater than the maximum load impedance value of the ship, then the maximum load impedance value of the ship is determined as the impedance threshold of the target ship load; if the intermediate impedance value is less than or equal to the maximum load impedance value of the ship, then the intermediate impedance value of the ship is determined as the impedance threshold of the target ship load. If the target ship load has a fault, the first target switch is controlled to open. The first target switch is located between the target port and the target ship load and is used to control whether the target port supplies power to the target ship load. The first target switch is controlled to disconnect through the following steps: After determining that the target ship's load is faulty and that the fault persists for a preset time, the second current value and the second voltage value of the target port are obtained. Calculate the second output equivalent impedance value of the target port based on the second current value and the second voltage value of the target port; Based on the second output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load still has a fault; If the target vessel's load still has a fault, then the first target switch is disconnected.

2. The method of claim 1, wherein, The target port is connected to the ship's main power supply so that the target ship load is powered by the main power supply. The ship also includes a backup power supply. The method further includes: Determine whether the first target switch has been disconnected; If so, the second target switch is closed, which controls whether the backup power supply provides power to the target ship load.

3. The method of claim 2, wherein, The method further includes: Obtain the third current value and the third voltage value of the target port, which is connected to the ship's backup power supply so that the backup power supply can supply power to the target ship's load; Calculate the third output equivalent impedance value of the target port based on the third current value and the third voltage value of the target port; Based on the third output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load has a fault; If the target vessel's load is faulty, the second target switch is disconnected.

4. The method of claim 3, wherein, The second target switch is disconnected by following these steps: After determining that the target ship's load has a fault and that the fault persists for a preset time, the fourth current value and the fourth voltage value of the target port are obtained. Calculate the fourth output equivalent impedance value of the target port based on the fourth current value and the fourth voltage value of the target port; Based on the fourth output equivalent impedance value and the impedance threshold of the target ship load, determine whether the target ship load still has a fault; If the target vessel load still has a fault, then the second target switch is disconnected.

5. The method of claim 1, wherein, The intermediate impedance value is calculated using the following formula based on the rated voltage and rated power values ​​of the target ship load: wherein, is an intermediate impedance value, V is a rated voltage value of the target ship load, and P is a rated power value of the target ship load.

6. A malfunction control device of a marine vessel, characterized by, The device includes a filter circuit, a first target switch, and a control module. One end of the first target switch is connected to the positive terminal of a target port, and the other end of the first target switch is connected to one end of the filter circuit. The other end of the filter circuit is connected to the positive terminal of a target ship load, and the negative terminal of the target ship load is connected to the negative terminal of the target port. The data detection terminal of the control module is connected between the positive terminal of the target port and the first target switch to obtain a first current value and a first voltage value of the target port. The control terminal of the control module is connected to the control terminal of the first target switch to control the closing or opening of the first target switch. The control module includes: The target port measurement unit is used to acquire the first current value and the first voltage value of the target port, wherein the target port is the power supply port that is closest to the target ship load in the ship's power supply circuit and is used to supply power to the target ship load; The first output equivalent impedance value calculation unit is used to calculate the first output equivalent impedance value of the target port based on the first current value and the first voltage value of the target port. The target ship load fault determination unit is used to determine whether the target ship load has a fault based on the first output equivalent impedance value and the impedance threshold of the target ship load. The impedance threshold of the target ship load is determined through the following steps: calculating an intermediate impedance value based on the rated voltage and rated power of the target ship load; determining whether the intermediate impedance value is greater than the maximum load impedance value of the ship; if the intermediate impedance value is greater than the maximum load impedance value of the ship, then the maximum load impedance value of the ship is determined as the impedance threshold of the target ship load; if the intermediate impedance value is less than or equal to the maximum load impedance value of the ship, then the intermediate impedance value of the ship is determined as the impedance threshold of the target ship load. A first target switch control unit is configured to control the first target switch to open if the target ship load has a fault. The first target switch is located between the target port and the target ship load and is used to control whether the target port supplies power to the target ship load. The control of the first target switch to open is achieved through the following steps: after determining that the target ship load has a fault and this fault has persisted for a preset time, a second current value and a second voltage value of the target port are obtained; based on the second current value and the second voltage value of the target port, a second output equivalent impedance value of the target port is calculated; based on the second output equivalent impedance value and the impedance threshold of the target ship load, it is determined whether the target ship load still has a fault; if the target ship load still has a fault, the first target switch is controlled to open.

7. An electronic device, comprising: include: A processor, a memory, and a bus, the memory storing machine readable instructions executable by the processor, the processor in communication with the memory via the bus when the electronic device is running, the processor executing the machine readable instructions to perform the steps of the method of any of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, A computer readable storage medium storing a computer program, the computer program when executed by a processor performing the steps of the method of any of claims 1 to 5.

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