Power supply control system

Abstract

The embodiment of the utility model provides a power supply control system, and the system comprises a power supply unit which comprises a power input end; the power switching unit is connected with the power supply unit; the switch units are respectively connected between the plurality of power supply input ends and the power supply switching unit, and the switch units are configured to correspondingly switch on / off the first line based on the availability / unavailability of the power supply input ends; the sampling units are respectively connected to a plurality of power supply input ends and are used for acquiring electrical information of the power supply input ends; the control unit is respectively connected with the switch unit, the sampling unit and the power supply switching unit, and is configured to generate an execution signal based on the conduction condition and / or the electrical information of the first line; the power supply switching unit performs power supply switching operation on the power supply unit according to the execution signal. According to the invention, the power supply is automatically switched through the power supply switching unit, switching failure caused by the problem of a control circuit is reduced, and contactor wear and arc damage caused by frequent switching are avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of power supply technology, and in particular to a power supply control system. Background Art

[0002] However, the current microgrids with mixed power sources face challenges in control and switching management in actual operation. The control strategy commonly used in related technologies relies on a decentralized control mode based on PLC-type contactors. This method not only has a complex control architecture, but also makes it difficult to achieve precise management, resulting in reduced inflexibility at the system operation level. Specifically, there are frequent problems with the switching control lines between the various power sources, which often cause switching failures due to line failures or improper configuration, reducing the reliability of power supply and affecting the overall performance of the microgrid.

[0003] In addition, as a switching element, the contactor is used for high-frequency operation. The arc and thermal effects will cause damage to the contacts, which will become defective over time, affecting the conductivity, increasing the resistance, and even causing fire hazards when the heat is severe. At the same time, the mechanical structure of the contactor is prone to jamming and failure due to frequent operation, wear and environmental factors, which will reduce the service life, increase maintenance costs, and affect the continuity and stability of the power grid operation. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide a power supply control system to solve the problems in the related art.

[0005] A first aspect of the present disclosure provides a power supply control system, which is applied to a ship carrier, and includes:

[0006] A power supply unit, comprising a plurality of power input terminals;

[0007] A power switching unit, connected to the power supply unit, wherein the power supply unit supplies power to at least one external load unit through the power switching unit;

[0008] A plurality of switch units are respectively connected between the plurality of power input terminals and the power switching unit, wherein one of the plurality of switch units is configured to turn on / off a first line between the corresponding power input terminal and the power switching unit based on availability / unavailability of the corresponding power input terminal;

[0009] A plurality of sampling units are respectively connected to the plurality of power input terminals and are used to respectively collect electrical information of the corresponding power input terminals;

[0010] a control unit, connected to the plurality of switch units, the plurality of sampling units and the power switching unit, respectively, and configured to generate an execution signal based on the conduction condition of the first line and / or the electrical information;

[0011] The power switching unit performs a power switching operation on the power supply unit according to the execution signal.

[0012] In an embodiment of the first aspect, the multiple power input terminals are respectively coupled to at least two of a clean energy system, an energy storage battery, and a mains power supply.

[0013] In an embodiment of the first aspect, a first inverter cabinet is further included between the clean energy system and the one switch unit;

[0014] And / or, a second inverter cabinet is also included between the energy storage battery and the one switch unit.

[0015] In an embodiment of the first aspect, one of the plurality of sampling units includes: an electric energy meter, configured to collect the electrical information.

[0016] In an embodiment of the first aspect, the electric energy meter is a rail-type electric energy meter.

[0017] In an embodiment of the first aspect, the at least one external load unit comprises at least one first load unit coupled to the power switching unit via an uninterruptible power supply module;

[0018] And / or, the first load unit comprises a first sub-load unit coupled to the uninterruptible power supply module via a voltage conversion module;

[0019] The control unit is connected to the first sub-load unit, and is further configured to generate the execution signal based on feedback information collected by the first sub-load unit.

[0020] In an embodiment of the first aspect, the first sub-load unit includes: a monitoring unit for monitoring the ship vehicle information, a control module for controlling the ship, a smoke sensor, a water leakage detector, a temperature and humidity sensor, a fire alarm, a touch display and a combustible gas detector.

[0021] In an embodiment of the first aspect, one of the plurality of switch units comprises:

[0022] A first switch module is connected to one of the plurality of power input terminals and is grounded through a power lightning arrester;

[0023] A second switch module is connected between one of the plurality of power input terminals and the power switching unit, and is used for switching on or off the first line.

[0024] In an embodiment of the first aspect, the power supply control system further includes a plurality of indication units, respectively coupled to the plurality of power input terminals, for indicating whether the corresponding power input terminals are available.

[0025] In an embodiment of the first aspect, the power supply control system further includes a human-computer interaction unit connected to the control unit, and the control unit is further configured to generate the execution signal based on input information of the human-computer interaction unit.

[0026] The beneficial effects of the present invention are as follows: the control unit controls the power switching unit to automatically switch the power supply according to the available status of each power input terminal and the electrical information. Compared with the traditional distributed control method, the switching time is greatly shortened, the switching failure caused by control line problems is reduced, the overall operation efficiency is improved, and the contactor wear and arc damage caused by frequent switching are avoided, the service life of the equipment is extended, and the safety risks caused by electrical failures are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a power supply control system in one embodiment of the present disclosure is shown.

[0028] Figure 2 A schematic diagram of the structure of a power supply unit in a power supply control system according to an embodiment of the present disclosure is shown.

[0029] Figure 3 A schematic structural diagram of a power supply control system in another embodiment of the present disclosure is shown.

[0030] Figure 4 A schematic structural diagram of a power supply control system in yet another embodiment of the present disclosure is shown.

[0031] Figure 5 A schematic diagram of the structure of a switch unit in a power supply control system according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0032] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0033] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0036] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0037] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0038] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0039] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0040] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0041] In related technologies, the control strategy used relies on a decentralized control mode based on a PLC-type contactor. This method not only has a complex control architecture, but also makes it difficult to achieve precise management, resulting in reduced flexibility at the system operation level. Problems with the switching control lines between power sources frequently occur, often resulting in switching failures due to line faults or improper configuration, which reduces the reliability of power supply and affects the overall performance of the microgrid.

[0042] In addition, as a switching element, the contactor is used for high-frequency operation. The arc and thermal effects will cause damage to the contacts, which will become defective over time, affecting the conductivity, increasing the resistance, and even causing fire hazards when the heat is severe. At the same time, the mechanical structure of the contactor is prone to jamming and failure due to frequent operation, wear and environmental factors, which will reduce the service life, increase maintenance costs, and affect the continuity and stability of the power grid operation.

[0043] In the power supply control system in the disclosed embodiment, the control unit controls the power switching unit to automatically switch the power supply according to the available status of each power input terminal and the electrical information. Compared with the traditional distributed control method, the switching time is greatly shortened, the switching failure caused by control line problems is reduced, the overall operation efficiency is improved, and the contactor wear and arc damage caused by frequent switching are avoided, thereby extending the service life of the equipment and reducing the safety risks caused by electrical failures.

[0044] exist Figure 1 In the example, a schematic diagram of the structure of a power supply control system in an embodiment of the present disclosure is shown. The power supply control system can be applied to a ship carrier. Specifically, the power supply control system includes:

[0045] The power supply unit 100 includes a plurality of power input terminals 101;

[0046] A power switching unit 200, connected to the power supply unit 100, wherein the power supply unit 100 supplies power to at least one external load unit 300 through the power switching unit 200;

[0047] A plurality of switch units 400 are respectively connected between the plurality of power input terminals 101 and the power switching unit 200, wherein one switch unit 400 among the plurality of switch units 400 is configured to connect / disconnect a first line between the corresponding power input terminal 101 and the power switching unit 200 based on availability / unavailability of the corresponding power input terminal 101;

[0048] A plurality of sampling units 500 are respectively connected to the plurality of power input terminals 101 and are used to respectively collect electrical information of the corresponding power input terminals 101;

[0049] a control unit 600, connected to the plurality of switch units 400, the plurality of sampling units 500 and the power switching unit 200, respectively, and configured to generate an execution signal based on the conduction condition of the first line and / or the electrical information;

[0050] The power switching unit 200 performs a power switching operation on the power supply unit 100 according to the execution signal.

[0051] Specifically, in some embodiments, the power supply unit 100 includes multiple independent power input terminals 101, such as a generator driven by a main engine, an auxiliary generator, and a renewable energy (such as a solar panel) converter, etc. The power input terminal 101 can be flexibly connected to different power sources to meet the power requirements under different working conditions.

[0052] The power switching unit 200 can automatically turn on or off the first line according to the execution signal of the control unit 600, and switch between different power sources without interruption to ensure the continuity of power supply. At the same time, it can reduce physical contact, thereby reducing the possibility of wear and arc generation.

[0053] As an example, the switch unit 400 may adopt advanced solid-state switch technology or enhanced electromagnetic relays, which can automatically turn on or off the first line according to external instructions or the available state of the power supply (such as voltage, current stability and power health). The sampling unit 500 is used to monitor electrical parameters such as voltage, current, frequency and power factor in real time, and send electrical information containing electrical parameters to the control unit 600. The control unit 600 analyzes the power quality of the input power at the power input end according to the electrical information, and obtains the analysis result. According to the analysis result, an execution signal is generated to control the input power by controlling the power switching unit 200 to select an input power with good power quality.

[0054] As an example, when the control unit 600 detects that the voltage is lower than a preset threshold (for example, lower than 80% of the rated voltage) or the current is abnormal (overload or no current flowing, which means a circuit breakers) based on the electrical information, the power quality of the corresponding input power supply is analyzed to be poor.

[0055] Power quality can be voltage quality, current quality, and frequency quality.

[0056] Optionally, the control unit 600 may integrate a processor, receive electrical information and switch status feedback from the sampling unit 500, and generate an accurate execution signal after comprehensive analysis. It should be noted that the processor generates a control signal (such as an execution signal, a switch control signal) based on feedback information, which belongs to the prior art, and the present disclosure does not involve software improvement.

[0057] When the control unit 600 determines that the power supply needs to be switched based on the analysis results of the power quality and the analysis results of the conduction of the first line, an execution signal is sent to the power switching unit 200. After receiving the instruction, the power switching unit 200 quickly executes the execution signal and switches on the first line between the corresponding power input terminal 101 and the power switching unit 200, reducing the delay and risk caused by the traditional contactor operation. The automatic switching of the power switching unit 200 greatly shortens the switching time from one power supply to another, and reduces the power supply interruption caused by the switching delay.

[0058] Optionally, as an example, the power switching unit 200 uses an integrated thyristor to perform power switching operations on the power supply unit 100. The integrated thyristor reduces the number of external components, simplifies the circuit design and assembly process, and reduces system complexity and assembly costs. This also helps to improve the reliability of the system and reduce failure points. The integrated thyristor has lower conduction loss and switching loss, thereby improving the energy efficiency of the overall system. In addition, it can also support higher operating frequencies and greater current capacity.

[0059] Optional, in Figure 2 In the example, the plurality of power input terminals 101 are respectively coupled to at least two of the clean energy system 111 , the energy storage battery 112 and the mains electricity 113 .

[0060] Specifically, in some embodiments, the clean energy system 111, such as a solar photovoltaic panel array or a wind turbine, ensures that the system can give priority to using environmentally friendly and sustainable energy. The energy storage battery 112 stores electricity when there is an excess of clean energy, and releases electricity when there is an energy shortage or no sunshine at night to ensure the continuity and stability of the power supply. The mains 113 network ensures that the system can still operate under extreme conditions (such as insufficient solar power generation due to long-term rainy weather, or temporary lack of wind resources).

[0061] Optionally, the control unit 600 can monitor the input status (including voltage, current and power factor, etc.) of each power input terminal 101 in real time, and make decisions based on a preset optimization strategy. For example, when it is detected that the output power of the solar photovoltaic panel reaches a peak value, the control unit 600 will automatically reduce the usage ratio of the mains 113 and instruct the energy storage battery 112 to enter the charging mode; conversely, if it is predicted that weather changes will lead to a decrease in clean energy output, the system will schedule the energy storage battery 112 to discharge in advance and appropriately increase the access to the mains 113 to maintain the overall power balance of the system and the power supply quality on the user side.

[0062] Optional, in Figure 3 In the example, a first inverter cabinet 700 is further included between the clean energy system 111 and the one switch unit 400;

[0063] And / or, a second inverter cabinet 701 is further included between the energy storage battery 112 and the one switch unit 400 .

[0064] Specifically, in some embodiments, the clean energy system 111 usually generates direct current (DC), while most loads require alternating current (AC). The first inverter cabinet 700 is used to convert direct current into alternating current, ensuring that the power loss during the conversion process is minimized, while providing the necessary voltage and frequency adjustment functions to match the needs of specific loads. As an example, the first inverter cabinet 700 can also be embedded with an intelligent monitoring module, which can monitor the output status of the clean energy system 111 in real time, and communicate with the control unit 600 to dynamically adjust the inverter parameters and optimize the power quality.

[0065] The energy storage battery 112 stores electrical energy (generally in the form of DC) during off-peak hours and releases it when needed. The second inverter cabinet 701 has a similar function to the first inverter cabinet 700, but is designed specifically for the energy storage battery 112 and is responsible for converting the DC power stored in the battery into AC power output. It also has intelligent regulation capabilities and dynamically adjusts the working mode according to system instructions and battery status.

[0066] Optional, in Figure 4 In the example, one sampling unit 500 among the plurality of sampling units 500 includes: an electric energy meter 501, which is used to collect the electrical information.

[0067] Specifically, in some embodiments, an electric energy meter 501 is provided in the sampling unit 500, which can not only accurately measure basic electrical parameters such as current, voltage, active power, reactive power, etc. of the power input terminal 101, but also monitor and record the total amount of electric energy consumed or generated, as well as power factor and other indicators reflecting energy utilization efficiency in real time.

[0068] Optionally, in order to adapt to different application environments and electrical levels, the electric energy meter 501 supports a wide range of voltage (such as single-phase 220V to three-phase 400V) and current (from a few amperes to hundreds of amperes) measurements, and has good electromagnetic compatibility and environmental adaptability to ensure stable operation under complex working conditions. And the electric energy meter 501 exchanges data with the control unit 600 through a built-in communication module (such as RS485, Modbus, etc.) to achieve remote monitoring and data analysis. The control unit 600 can perform energy consumption analysis, fault warning, efficiency evaluation, and formulation of optimized scheduling strategies based on these real-time collected data.

[0069] Optionally, the electric energy meter 501 is a rail-type electric energy meter 501 .

[0070] Specifically, in some embodiments, the rail-type energy meter 501 improves the flexibility and efficiency of electrical information collection, and is particularly suitable for electrical system environments that require frequent adjustments or expansions. The rail-type energy meter 501 can be quickly installed on a standard 35mm rail in an electrical cabinet without the need for special tools. This design allows the user to easily add or replace the energy meter 501 according to actual needs without interrupting the operation of the entire electrical system, reducing downtime and labor costs during maintenance and upgrades.

[0071] In addition to detecting the electrical information of the power input terminal 101, the rail-type energy meter 501 also has a compact structural design to ensure efficient use in a limited space while maintaining good heat dissipation performance, and can ensure long-term stable operation even in an electrical cabinet with dense wiring.

[0072] Optionally, as an example, in order to enhance user interaction, an LCD display can be configured on the front panel of the rail-type electricity meter 501 to display key electrical data in real time and be equipped with simple operation buttons, so that on-site personnel can intuitively view the current energy consumption status or make basic setting adjustments, and perform preliminary fault diagnosis and data verification without relying on external equipment.

[0073] Optional, in Figure 4 In the example, the at least one external load unit 300 includes at least one first load unit 301 coupled to the power switching unit 200 via an uninterruptible power supply module 801;

[0074] And / or, the first load unit 301 includes a first sub-load unit 310 coupled to the uninterruptible power supply module 801 via a voltage conversion module 802;

[0075] The control unit 600 is connected to the first sub-load unit 310 , and is further configured to generate the execution signal based on the feedback information collected by the first sub-load unit 310 .

[0076] Specifically, in some embodiments, the uninterruptible power supply module 801 is used to convert the voltage on the power input side into 220V for use by 220V electrical appliances on the ship carrier. At the same time, the uninterruptible power supply ensures that when the power supply unit 100 or the power switching unit 200 fails, it can continue to supply power to the first load unit 301, thereby ensuring uninterrupted operation of the ship carrier.

[0077] The voltage transformation module 802 is used to regulate and transform the electric energy received from the uninterruptible power supply module 801 to meet the specific voltage and current requirements of the first sub-load unit 310 .

[0078] Optional, in Figure 4In the example, the first sub-load unit 310 includes: a monitoring unit 311 for monitoring the ship's carrier information, a control module 312 for controlling the ship, a smoke sensor 313, a water leakage detector 314, a temperature and humidity sensor 315, a fire alarm 316, a touch display 317 and a combustible gas detector 318.

[0079] Specifically, in some embodiments, to ensure that the first sub-load unit 310, which integrates a variety of sensors required for the normal operation of the ship carrier (including but not limited to the monitoring unit 311, the control module 312, the smoke sensor 313, the water leakage detector 314, the temperature and humidity sensor 315, the fire alarm 316, the touch display 317 and the combustible gas detector 318) can maintain continuous power supply under any circumstances, an emergency bypass is also provided in the present disclosure, which is provided between the first load unit 301 and the energy storage battery 112 and is coupled to the power switching unit 200. The emergency bypass conducts the power path between the energy storage battery 112 and the first sub-load unit 310 at the moment of detecting (automatic detection or manual detection, which can be selected according to actual conditions) an abnormality in the input power supply (such as an emergency situation such as a power outage of the city power 113, a failure of the clean energy system 111, etc.) or an abnormality in the power switching unit 200. This ensures that even in an emergency, various key sensors and control devices carried by the first sub-load unit 310 can continue to work uninterruptedly, continuously monitor the ship's status, respond to emergencies and implement necessary controls to ensure ship safety and operational continuity.

[0080] As an example, the emergency bypass can also be connected to advanced fault detection and isolation logic, which can automatically determine whether to safely return to the input power supply mode after the input power returns to stability, or continue to be powered by the energy storage battery 112 according to actual conditions (such as unstable input power quality) until the environment returns to normal. In addition, the system is also equipped with an energy management function to optimize the discharge rate and depth of the energy storage battery 112, extend the emergency power supply time, and ensure that the ship's autonomous operation capability is not affected while waiting for external rescue or completing necessary operations.

[0081] Optionally, the monitoring unit 311 is used to continuously collect and analyze data from various parts of the ship. It can monitor the basic information of the ship such as the position, speed, heading, fuel consumption, and the parameters related to navigation safety such as the ship's posture and weather conditions in real time.

[0082] The control module 312 works closely with the monitoring unit 311. The control module 312 automatically or passively (such as control signals generated by user operations) adjusts the navigation status of the ship according to the monitoring data and the preset safety and efficiency strategies, such as steering gear control, engine output power adjustment, etc. It can also perform emergency avoidance operations, such as automatically adjusting the course to avoid obstacles when encountering dangerous situations. The smoke sensor 313 is arranged in key areas of the ship, such as the cabin, kitchen and living area. The smoke sensor 313 can quickly detect smoke and warn of fire risks in advance, winning precious time for timely fire-fighting measures. The water leakage detector 314 is installed on the bottom of the ship and possible water seepage areas, using sensor technology to monitor any abnormal water accumulation. Once a water leak is detected, an alarm is immediately issued to prevent the expansion of water damage accidents. The temperature and humidity sensors 315 are distributed in locations such as cargo warehouses, living areas and electronic equipment rooms to monitor the ambient temperature and humidity, ensure the storage conditions of the cargo and the comfort of the personnel, and prevent the electronic equipment from being damaged due to improper temperature and humidity. The fire alarm 316 works in conjunction with the smoke sensor 313. When a fire is confirmed, it immediately triggers an audible and visual alarm throughout the ship, instructs personnel to evacuate quickly, and activates the automatic fire extinguishing system. The touch display 317 is located on the bridge or other key operating areas. As a human-machine interaction interface, it displays all monitoring data, alarm information and control options, allowing the crew to intuitively and conveniently understand the status of the ship and perform operational control. The combustible gas detector 318 is deployed in potential gas leakage areas, such as fuel storage rooms and kitchens, to monitor flammable and explosive gases such as methane and liquefied petroleum gas in real time to prevent fires or explosions caused by gas leaks.

[0083] Optionally, the sensors integrated in the first sub-load unit 310 monitor the status and environmental conditions of the ship in real time, and these sensors are connected to the control module 312 via wired or wireless communication protocols (such as CAN bus, Modbus, WiFi, etc.). The microprocessor in the control module 312 first pre-processes the received raw data, including filtering (removing noise), calibration (ensuring data accuracy), standardization (facilitating subsequent processing), and preliminary analysis to identify any initial signs of abnormality or emergency. The control module 312 generates execution signals based on the following possible factors, such as whether the current load level is close to the maximum bearing capacity of the first sub-load unit 310, whether there is voltage fluctuation, whether overload protection is required, etc., to ensure the stable operation of the system. The control module 312 generates execution signals based on the feedback information of the first sub-load unit 310, which may include adjusting the voltage level of the power input, changing the current limit setting value, activating or shutting down a specific power protection mechanism, etc. For example, if the current demand of the first sub-load unit 310 increases, and the current power input is insufficient to meet this demand, the control module 312 may issue an instruction to increase the input power.

[0084] Optional, in Figure 5 In the example, one of the plurality of switch units 400 includes:

[0085] A first switch module 401 is connected to one of the plurality of power input terminals 101 and is grounded via a power lightning arrester 402;

[0086] The second switch module 403 is connected between one of the multiple power input terminals 101 and the power switching unit 200 and is used to connect or disconnect the first line.

[0087] Specifically, in some embodiments, the first switch module 401 is used to provide a primary protection layer for the power input to prevent lightning strikes or other surge events from damaging the system. As an example, the lightning arrester 402 can use components such as gas discharge tubes or varistors. When an abnormally high voltage (such as caused by lightning strikes) is detected, it quickly turns on and discharges excess energy to the ground to ensure that subsequent circuits are not damaged.

[0088] The second switch module 403 dynamically controls the on and off of the first power line according to system requirements or fault conditions. As an example, the second switch module 403 can be equipped with an intelligent controller, which can receive instructions from the upper control unit 600, or independently decide whether to turn on or off the first line according to preset conditions (such as voltage and current thresholds), thereby achieving switching or protective disconnection of the power path. Efficient and reliable switching elements such as solid-state relays (SSRs) or electromagnetic relays can be used to ensure that no sparks are generated during the switching process, reduce mechanical wear, and improve service life and reliability.

[0089] Optional, in Figure 4 In the example, the power supply control system further includes a plurality of indication units 900 , which are respectively coupled to the plurality of power input terminals 101 and are used to indicate whether the corresponding power input terminals 101 are available.

[0090] Specifically, in some embodiments, the indication unit 900 is used for intuitive and real-time monitoring of the status of multiple power input terminals 101, ensuring that the operator can quickly identify the working status of each power input terminal 101, and respond and allocate power resources in a timely manner. As an example, each indication unit 900 can be composed of an LED light (or an LCD display) and a corresponding status monitoring circuit, and the LED light can use different colors (such as green for "available", red for "fault", and yellow for "standby") to intuitively convey power status information.

[0091] Optional, in Figure 4In the example, the power supply control system further includes a human-computer interaction unit 1000 connected to the control unit 600 , and the control unit 600 is further configured to generate the execution signal based on input information of the human-computer interaction unit 1000 .

[0092] Specifically, in some embodiments, the human-computer interaction unit 1000 includes a touch screen display, a key panel or a voice recognition module, etc., and a suitable interaction method can be selected according to the application scenario. The touch screen display provides a graphical interface to display the system status, menu options and operation guides; the key panel is suitable for simple and direct operation instruction input; and the voice recognition module is suitable for hands-free operation environments, such as industrial sites or barrier-free facilities. The human-computer interaction unit 1000 collects the user's input information to generate a specific execution signal, and the power switching unit 200 adjusts the input power according to the execution signal.

[0093] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present disclosure shall still be covered by the protection scope of the present disclosure.

Claims

1. A power supply control system, characterized in that: Applied to ship vehicles, including: A power supply unit, comprising a plurality of power input terminals; A power switching unit, connected to the power supply unit, wherein the power supply unit supplies power to at least one external load unit through the power switching unit; A plurality of switch units are respectively connected between the plurality of power input terminals and the power switching unit, wherein one of the plurality of switch units is configured to turn on / off a first line between the corresponding power input terminal and the power switching unit based on availability / unavailability of the corresponding power input terminal; A plurality of sampling units are respectively connected to the plurality of power input terminals and are used to respectively collect electrical information of the corresponding power input terminals; a control unit, connected to the plurality of switch units, the plurality of sampling units and the power switching unit, respectively, and configured to generate an execution signal based on the conduction condition of the first line and / or the electrical information; The power switching unit performs a power switching operation on the power supply unit according to the execution signal.

2. The power supply control system according to claim 1, characterized in that: The multiple power input terminals are respectively coupled to at least two of the clean energy system, the energy storage battery and the mains electricity.

3. The power supply control system according to claim 2, characterized in that: A first inverter cabinet is also included between the clean energy system and the one switch unit; And / or, a second inverter cabinet is also included between the energy storage battery and the one switch unit.

4. The power supply control system according to claim 1, characterized in that: One of the plurality of sampling units comprises: an electric energy meter, configured to collect the electrical information.

5. The power supply control system according to claim 4, characterized in that: The electric energy meter is a rail-type electric energy meter.

6. The power supply control system according to claim 1, characterized in that: The at least one external load unit comprises at least one first load unit coupled to the power switching unit via an uninterruptible power supply module; And / or, the first load unit comprises a first sub-load unit coupled to the uninterruptible power supply module via a voltage conversion module; The control unit is connected to the first sub-load unit, and is further configured to generate the execution signal based on feedback information collected by the first sub-load unit.

7. The power supply control system according to claim 6, characterized in that: The first sub-load unit includes: a monitoring unit for monitoring the ship carrier information, a control module for controlling the ship, a smoke sensor, a water leakage detector, a temperature and humidity sensor, a fire alarm, a touch display and a combustible gas detector.

8. The power supply control system according to claim 1, characterized in that: One of the plurality of switch units comprises: A first switch module is connected to one of the plurality of power input terminals and is grounded through a power lightning arrester; A second switch module is connected between one of the plurality of power input terminals and the power switching unit, and is used for switching on or off the first line.

9. The power supply control system according to claim 1, characterized in that: The power supply control system further includes a plurality of indication units, which are respectively coupled to the plurality of power input terminals and are used to indicate whether the corresponding power input terminals are available.

10. The power supply control system according to claim 1, characterized in that: The power supply control system further includes a human-machine interaction unit connected to the control unit, and the control unit is further configured to generate the execution signal based on input information of the human-machine interaction unit.

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