An adaptive combined power supply system and method for high voltage on-line monitoring equipment

Abstract

The application discloses a kind of adaptive combined power supply system and method for high pressure online monitoring equipment.Therein, system includes: laser emission and control system being arranged in low voltage side;Energy receiving and management unit being arranged in high voltage side;And the composite function fiber connecting laser emission and control system and energy receiving and management unit, for synchronous transmission light energy and communication signal;Wherein, energy receiving and management unit includes: photovoltaic conversion module, for receiving and transmitting laser through composite function fiber, and it is converted into electric energy;Current transformer power acquisition module, for obtaining electric energy from high voltage busbar induction;And intelligent power management module is electrically connected with photovoltaic conversion module and current transformer power acquisition module respectively, for according to busbar current state, executes multimodal adaptive power distribution strategy, to carry out seamless switching between laser power supply mode, hybrid power supply mode and CT power supply mode, and power supply to monitoring equipment load.

Description

Technical Field

[0001] This invention relates to the field of online monitoring technology for high-voltage electrical equipment, and more specifically, to an adaptive combined power supply system and method for high-voltage online monitoring equipment. Background Technology

[0002] As new power systems develop towards higher proportions of renewable energy integration and greater power electronics, online monitoring of high-voltage transmission lines and substation equipment has become a crucial link in ensuring the safe and stable operation of the power grid. Online monitoring equipment is widely deployed in fields at voltage levels of 110kV and above. These devices generally require a continuous, stable, and high-power power supply, and must be able to operate reliably under a wide range of fluctuations in bus current, from no-load to short-circuit faults.

[0003] However, existing power supply solutions all have inherent drawbacks. Solar power converts light energy into electrical energy through the photovoltaic effect, achieving electrical isolation, but it is severely limited by sunlight conditions, making it difficult to guarantee continuous power supply during cloudy or rainy weather and at night. Laser power transmission, based on fiber optic transmission of light energy to the high-voltage side for photoelectric conversion, solves the insulation problem, but is limited by laser output power and photoelectric conversion efficiency, making it difficult to meet the high power requirements of high-voltage online monitoring equipment. Furthermore, high-power lasers have limited lifespans and are expensive. Current transformers (CTs) extract energy from the busbar using the principle of electromagnetic induction, providing significant power, but under light loads, insufficient induced electromotive force creates a "power supply dead zone," and short-circuit faults pose risks of overvoltage surges and core saturation. Wireless power supply methods such as magnetic coupling resonance and microwave radiation achieve non-contact energy transmission through near-field coupling or far-field radiation, avoiding physical connections. However, in high-voltage applications, transmission efficiency decreases sharply with increasing distance, is susceptible to electromagnetic interference from metal components, and has limited output power, making it difficult to meet the stable power supply requirements of monitoring equipment.

[0004] Existing improvement solutions still fail to fundamentally solve the limitations of various power supply methods at the principle level. They lack an intelligent collaborative power supply mechanism that can adaptively adjust according to line operating conditions, and cannot meet the reliable power supply requirements of high-voltage online monitoring equipment under all operating conditions. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adaptive combined power supply system and method for high-voltage online monitoring equipment.

[0006] According to one aspect of the present invention, an adaptive combined power supply system for high-voltage online monitoring equipment is provided, comprising: a laser emission and control system disposed on the low-voltage side; an energy receiving and management unit disposed on the high-voltage side; and a composite functional optical fiber connecting the laser emission and control system and the energy receiving and management unit for synchronous transmission of optical energy and communication signals; wherein the energy receiving and management unit includes: A photovoltaic conversion module is used to receive laser light transmitted through a composite functional optical fiber and convert it into electrical energy. Current transformer energy harvesting module, used to obtain electrical energy from the high-voltage busbar; and The intelligent power management module is electrically connected to the photovoltaic conversion module and the current transformer power supply module, respectively. It is used to execute a multi-mode adaptive power distribution strategy according to the bus current status, so as to seamlessly switch between laser power supply mode, hybrid power supply mode and CT power supply mode, and supply power to the monitoring equipment load.

[0007] Optionally, the intelligent power management module includes: High-performance microcontroller (MCU) for running multimodal adaptive power allocation algorithms; A power combining and switching circuit, connected to an MCU, is used to achieve seamless switching and power combining of two input power sources—a photovoltaic conversion module and a current transformer power module—based on solid-state switches; and A multi-channel voltage regulator output module is used to provide the required stable voltage for the load of monitoring equipment.

[0008] Optionally, the current transformer power extraction module includes: a protection circuit, including a power regulation circuit for limiting output power and an overvoltage protection circuit for suppressing overvoltage surges.

[0009] Optionally, the laser emission and control system includes: Laser power supply module, used to generate laser light of a specific wavelength; A precision temperature control system is used to maintain the operating temperature of the laser power supply module; and The communication control module is used for bidirectional communication with the intelligent power management module via a composite functional optical fiber.

[0010] According to another aspect of the present invention, an adaptive joint power supply method for high-voltage online monitoring equipment is provided, executed by an intelligent power management module, comprising: S1: Real-time monitoring of bus current I_bus, CT power P_ct, and total load power P_load; S2: Based on the bus current I_bus and the total load power P_load, it smoothly switches between three modes: laser-dominated, hybrid power supply and CT-dominated through fuzzy decision-making. S3: Based on the bus current I_bus, CT power P_ct, and total load power P_load, control commands are generated according to the selected mode and optimization objective function to dynamically adjust the output power of the laser emission and control system, and control the energy receiving and management unit to perform corresponding energy scheduling.

[0011] Optionally, step S3 includes: When I_bus < A, it enters the laser-dominated low-current mode, controlling the laser to operate at high power as the main power supply, while using the weak CT energy harvesting power to trickle charge the energy storage unit, where A is the bus threshold current for enabling CT energy harvesting. When A ≤ I_bus < B, the system enters the medium current mode of hybrid power supply, calculates the optimal power point of the laser and instructs it to operate with reduced power. The load is shared by the current transformer power extraction module and the laser emission system, where B is the upper limit of the bus current when using laser power supply. When I_bus ≥ B, the system enters the high-current mode dominated by the CT, controlling the laser to enter standby or low-power state, with the current transformer power module bearing the entire load.

[0012] Optionally, in medium current mode, the intelligent power management module calculates the optimal power point of the laser based on a preset optimization objective function, with the objective function aiming at least to maximize the overall system efficiency and / or extend the laser's lifetime.

[0013] Optionally, in step S1, the continuously acquired parameters also include the laser temperature T_laser and the ambient temperature T_ambient; in the mode switching step S2, the output power of the laser is dynamically compensated in combination with T_laser, and the system protection threshold is dynamically adjusted in combination with T_ambient.

[0014] According to another aspect of the present invention, a computer-readable storage medium is provided, the storage medium storing a computer program for performing the methods described in any of the above aspects of the present invention.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising: a processor; a memory for storing executable instructions of the processor; the processor being configured to read the executable instructions from the memory and execute the instructions to implement the method described in any of the preceding aspects of the present invention.

[0016] Therefore, this invention addresses the stringent requirements of new energy grid integration in emerging power systems, ultra-high voltage / extra-high voltage DC transmission, and high-voltage online monitoring equipment in complex industrial environments for power supply reliability, power adaptability, and maintenance-free operation. Based on the complementary characteristics of laser power supply and electromagnetic energy extraction from current transformers (CTs), and with the high-voltage side intelligent power management module (IPMM) as its core, a laser-CT energy extraction joint power supply scheme is constructed. Through real-time multi-parameter sensing, intelligent switching of power supply modes, and dynamic power optimization allocation methods, combined with the coordinated management of a hybrid energy storage system, precise energy control and proactive maintenance of system lifespan are achieved. This power supply system can simultaneously leverage the combined advantages of laser power supply's stability and reliability across the entire current range and excellent electrical isolation, and CT energy extraction's sufficient power and high economy during high-current periods. It effectively overcomes the inherent defects of single power supply schemes, such as "power supply dead zones," overcurrent surges, power limitations, and poor environmental adaptability, achieving uninterrupted, highly reliable, and highly efficient power supply for high-voltage online monitoring equipment across the entire operating range from no-load to short-circuit. This provides a universal and efficient power supply solution for various high-voltage online monitoring devices. Attached Figure Description

[0017] Exemplary embodiments of the present invention can be more fully understood by referring to the following figures: Figure 1 This is a schematic flowchart of an adaptive joint power supply method for high-voltage online monitoring equipment provided in an exemplary embodiment of the present invention; Figure 2 This is a schematic diagram of a combined power supply scheme for CT energy harvesting and laser power supply provided in an exemplary embodiment of the present invention; Figure 3 This is a flowchart of the intelligent power management module algorithm provided in an exemplary embodiment of the present invention; Figure 4 This is the structure of an electronic device provided in an exemplary embodiment of the present invention. Detailed Implementation

[0018] Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments of the present invention. It should be understood that the present invention is not limited to the exemplary embodiments described herein.

[0019] It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0020] Those skilled in the art will understand that the terms "first," "second," etc., in the embodiments of the present invention are only used to distinguish different steps, devices, or modules, and do not represent any specific technical meaning, nor do they indicate a necessary logical order between them.

[0021] It should also be understood that in the embodiments of the present invention, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0022] It should also be understood that any component, data or structure mentioned in the embodiments of the present invention can generally be understood as one or more unless explicitly defined or given contrary instructions in the context.

[0023] Furthermore, the term "and / or" in this invention is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this invention generally indicates that the preceding and following related objects have an "or" relationship.

[0024] It should also be understood that the description of the various embodiments in this invention emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0025] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0029] The embodiments of this invention can be applied to electronic devices such as terminal devices, computer systems, and servers, and can operate together with a wide range of other general-purpose or special-purpose computing system environments or configurations. Well-known examples of terminal devices, computing systems, environments, and / or configurations suitable for use with electronic devices such as terminal devices, computer systems, and servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputer systems, mainframe computer systems, and distributed cloud computing environments including any of the above systems, etc.

[0030] Electronic devices such as terminal devices, computer systems, and servers can be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. Typically, program modules can include routines, programs, object programs, components, logic, data structures, etc., which perform specific tasks or implement specific abstract data types. Computer systems / servers can be implemented in distributed cloud computing environments, where tasks are executed by remote processing devices linked through communication networks. In distributed cloud computing environments, program modules can reside on local or remote computing system storage media, including storage devices.

[0031] Exemplary methods Figure 1 This is a schematic flowchart of an adaptive combined power supply method for high-voltage online monitoring equipment provided by an exemplary embodiment of the present invention. This embodiment can be applied to electronic devices, such as... Figure 1 As shown, the adaptive joint power supply method 100 for high-voltage online monitoring equipment includes the following steps: S1: Real-time monitoring of bus current I_bus, CT power P_ct, and total load power P_load; S2: Based on the bus current I_bus and the total load power P_load, it smoothly switches between three modes: laser-dominated, hybrid power supply and CT-dominated through fuzzy decision-making. S3: Based on the bus current I_bus, CT power P_ct, and total load power P_load, control commands are generated according to the selected mode and optimization objective function to dynamically adjust the output power of the laser emission and control system, and control the energy receiving and management unit to perform corresponding energy scheduling.

[0032] Specifically, this invention addresses the stringent requirements of new energy grid integration in emerging power systems, ultra-high voltage / extra-high voltage DC transmission, and high-voltage online monitoring equipment in complex industrial environments for power supply reliability, power adaptability, and maintenance-free operation. Based on the complementary characteristics of laser power supply and electromagnetic energy extraction from current transformers (CTs), and with the high-voltage side intelligent power management module (IPMM) as its core, a laser-CT energy extraction joint power supply scheme is constructed. Through real-time multi-parameter sensing, intelligent switching of power supply modes, and dynamic power optimization allocation methods, combined with the coordinated management of a hybrid energy storage system, precise energy control and proactive maintenance of system lifespan are achieved. This power supply system can simultaneously leverage the combined advantages of laser power supply's stability and reliability across the entire current range and excellent electrical isolation, and CT energy extraction's sufficient power and high economy during high-current periods. It effectively overcomes the inherent defects of single power supply schemes, such as "power supply dead zones," overcurrent surges, power limitations, and poor environmental adaptability, achieving uninterrupted, highly reliable, and highly efficient power supply for high-voltage online monitoring equipment across the entire operating range from no-load to short-circuit. It provides a universal and efficient power supply solution for various high-voltage online monitoring devices.

[0033] Laser power supply, based on optical fiber transmission of light energy to the high-voltage side for photoelectric conversion, solves the insulation problem. However, it is limited by the laser's output power and photoelectric conversion efficiency, making it difficult to meet the high-power requirements of high-voltage monitoring equipment. Furthermore, high-power lasers have limited lifespans and are expensive. Current transformers (CTs) extract energy from the busbar using the principle of electromagnetic induction. Although they can provide relatively large power, they create a "power supply dead zone" due to insufficient induced electromotive force when the line is lightly loaded. In the event of a short-circuit fault, they face the risks of overvoltage surges and core saturation.

[0034] To address the power supply challenges of high-voltage online monitoring equipment under complex operating conditions, this invention combines the stability of laser power supply with the high-power advantage of CT (Computed Tomography) energy extraction. An intelligent power management module monitors the line status in real time and switches between three operating modes: laser power supply, laser-CT hybrid power supply, and CT power supply. This creates a reliable, integrated power supply solution that adapts to changes in line load. The system employs a distributed architecture, consisting of a laser emission and control system on the low-voltage side and an energy receiving and management unit on the high-voltage side. Both are connected via composite fiber optic cables for synchronous energy and signal transmission. This design ensures safe isolation between the high and low voltage sides while enabling intelligent system control. A schematic diagram of the invention is shown below. Figure 2 As shown.

[0035] The low-voltage side laser emission and control system adopts a modular design, specifically including a laser power supply module, a precision temperature control system, and a communication control module.

[0036] The high-voltage side energy receiving and management unit includes a photovoltaic conversion module, a CT energy harvesting module, and an intelligent power management module (IPMM). The photovoltaic conversion module receives laser light transmitted via fiber optic cable and converts it into electrical energy. The CT energy harvesting module uses an optimized magnetic core and power control circuit to obtain energy from the high-voltage bus. It integrates a bidirectional thyristor power regulation circuit, limiting the output power within a safe range by adjusting the conduction angle, and employs a two-stage overvoltage protection system consisting of a varistor and a transient voltage suppression diode. The intelligent power management module (IPMM) includes a high-performance MCU, a power combining and switching circuit, and a multi-channel regulated output module. The high-performance MCU runs an adaptive power allocation algorithm, the power combining and switching circuit uses solid-state switches to achieve seamless switching and power combining between the two input energy sources, and the multi-channel regulated output module provides the required stable voltage to the monitoring equipment load.

[0037] When the bus current is low, the CT power output is small, so a laser power supply scheme is used. When the bus current increases, a combined CT power supply and laser power supply scheme is used. When the bus current is large, CT power supply takes the lead. The switching of the power supply scheme is adjusted by the Intelligent Power Management Module (IPMM). The IPMM executes a multi-modal adaptive power allocation strategy, and the algorithm flow is as follows: Figure 3 As shown, the specific steps are as follows: Step 1: Real-time sensing of multiple parameters IPMM continuously collects bus current I_bus, real-time output power of CT power harvesting module P_ct, total load power demand P_load, laser and ambient temperature T_laser, and T_ambient.

[0038] Step 2: Mode switching based on fuzzy decision-making. The laser power supply is adjusted according to the total load power and energy harvesting power. The current magnitude is used as the judgment condition, and the actual control target is the power supply allocation. IPMM smoothly switches between three operating modes based on I_bus and P_load. In the strategy, the laser power supply needs to be adjusted according to the total load power and energy harvesting power. The current magnitude is the judgment condition, and the actual control target is the power supply allocation. Low-current mode: Laser-dominated, when I_bus < A. Where A is the bus threshold current for enabling CT energy harvesting. The CT output power is weak, and the IPMM controls the laser to operate at a higher power as the main power supply, while simultaneously using the weak CT energy to trickle charge the energy storage unit.

[0039] Medium current mode: Hybrid power supply, when A ≤ I_bus < B. B is the upper limit current value of the bus current when using laser power supply. IPMM calculates the optimal power point of the laser and instructs the laser to operate at reduced power. CT and laser share the load.

[0040] High-current mode: CT-dominated when I_bus ≥ B. CT has sufficient power, and IPMM controls the laser to enter standby mode to significantly extend its lifespan. CT energy carries the entire load.

[0041] Therefore, the present invention has the following beneficial effects: Eliminating power supply dead zones: Through the synergy of laser power supply and CT power extraction, the high-voltage online monitoring equipment can be ensured to operate stably without interruption under all operating conditions from no-load to full-load busbar.

[0042] Achieve power adaptation: Intelligently and dynamically allocate the output power of the laser and CT according to the magnitude of the primary current and the load power requirements, so as to meet the equipment requirements and maximize the system energy efficiency and the life of key components.

[0043] Improve system reliability: Build a power supply architecture with redundancy capabilities and integrate multiple protection mechanisms to cope with power grid transients and harsh environmental challenges.

[0044] Expanding application scope: Providing a universal and efficient power supply solution that can be adapted to various high-voltage online monitoring devices.

[0045] Furthermore, this invention also provides an adaptive combined power supply system for high-voltage online monitoring equipment, comprising: a laser emission and control system disposed on the low-voltage side; an energy receiving and management unit disposed on the high-voltage side; and a composite functional optical fiber connecting the laser emission and control system and the energy receiving and management unit for synchronous transmission of optical energy and communication signals; wherein the energy receiving and management unit includes: A photovoltaic conversion module is used to receive laser light transmitted through a composite functional optical fiber and convert it into electrical energy. Current transformer energy harvesting module, used to obtain electrical energy from the high-voltage busbar; and The intelligent power management module is electrically connected to the photovoltaic conversion module and the current transformer power supply module, respectively. It is used to execute a multi-mode adaptive power distribution strategy according to the bus current status, so as to seamlessly switch between laser power supply mode, hybrid power supply mode and CT power supply mode, and supply power to the monitoring equipment load.

[0046] Optionally, the intelligent power management module includes: High-performance microcontroller (MCU) for running multimodal adaptive power allocation algorithms; A power combining and switching circuit, connected to an MCU, is used to achieve seamless switching and power combining of two input power sources—a photovoltaic conversion module and a current transformer power module—based on solid-state switches; and A multi-channel voltage regulator output module is used to provide the required stable voltage for the load of monitoring equipment.

[0047] Optionally, the current transformer power extraction module includes: an optimized magnetic core; a power control circuit; and a protection circuit, which includes a bidirectional thyristor power regulation circuit for limiting output power, and a two-stage overvoltage protection circuit composed of a varistor and a transient voltage suppression diode for suppressing overvoltage surges.

[0048] Optionally, the laser emission and control system includes: Laser power supply module, used to generate laser light of a specific wavelength; A precision temperature control system is used to maintain the operating temperature of the laser power supply module; and The communication control module is used for bidirectional communication with the intelligent power management module via a composite functional optical fiber.

[0049] Exemplary electronic devices Figure 4 This is the structure of an electronic device provided in an exemplary embodiment of the present invention. For example... Figure 4 As shown, the electronic device 40 includes one or more processors 41 and a memory 42.

[0050] The processor 41 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0051] The memory 42 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 41 may execute the program instructions to implement the methods of the software programs of the various embodiments of the present invention described above, and / or other desired functions. In one example, the electronic device may also include an input device 43 and an output device 44, these components being interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0052] In addition, the input device 43 may also include, for example, a keyboard, a mouse, etc.

[0053] The output device 44 can output various information to the outside. The output device 44 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0054] Of course, for the sake of simplicity, Figure 4Only some of the components of this electronic device relevant to the present invention are shown, omitting components such as buses, input / output interfaces, etc. In addition, the electronic device may include any other suitable components depending on the specific application.

[0055] Exemplary computer program products and computer-readable storage media In addition to the methods and apparatus described above, embodiments of the present invention may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the methods according to various embodiments of the present invention described in the "Exemplary Methods" section above.

[0056] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of the present invention. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0057] Furthermore, embodiments of the present invention may also be computer-readable storage media storing computer program instructions thereon, which, when executed by a processor, cause the processor to perform the steps of the methods according to various embodiments of the present invention described in the "Exemplary Methods" section above.

[0058] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0059] The basic principles of the present invention have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in the present invention are merely examples and not limitations, and should not be considered as essential features of each embodiment of the present invention. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the present invention to the necessity of employing the aforementioned specific details.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For system embodiments, since they largely correspond to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0061] The block diagrams of devices, systems, devices, and systems involved in this invention are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, systems, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0062] The methods and systems of the present invention may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of the present invention are not limited to the order specifically described above unless otherwise specifically stated. Furthermore, in some embodiments, the present invention may also be implemented as a program recorded on a recording medium, the program comprising machine-readable instructions for implementing the methods according to the present invention. Thus, the present invention also covers recording media storing programs for performing the methods according to the present invention.

[0063] It should also be noted that in the systems, apparatus, and methods of the present invention, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered equivalents of the present invention. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the invention. Therefore, the invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0064] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An adaptive combined power supply system for high-voltage online monitoring equipment, characterized in that, include: A laser emission and control system is installed on the low-pressure side; An energy receiving and management unit is installed on the high-voltage side; A composite functional optical fiber connecting the laser emission and control system and the energy receiving and management unit, used for synchronous transmission of optical energy and communication signals; wherein, the energy receiving and management unit includes: A photovoltaic conversion module is used to receive laser light transmitted through the composite functional optical fiber and convert it into electrical energy; Current transformer energy harvesting module, used to obtain electrical energy from the high-voltage busbar; and The intelligent power management module is electrically connected to the photovoltaic conversion module and the current transformer power extraction module, respectively. It is used to execute a multi-mode adaptive power allocation strategy according to the bus current state, so as to seamlessly switch between laser power supply mode, hybrid power supply mode and CT power extraction mode, and supply power to the monitoring equipment load.

2. The adaptive combined power supply system according to claim 1, characterized in that, The intelligent power management module includes: A high-performance microcontroller (MCU) is used to run the multimodal adaptive power allocation algorithm. A power combining and switching circuit, connected to the MCU, is used to achieve seamless switching and power combining of two input power sources from the photovoltaic conversion module and the current transformer energy harvesting module based on a solid-state switch; and A multi-channel voltage regulator output module is used to provide the required stable voltage for the load of monitoring equipment.

3. The adaptive combined power supply system according to claim 1 or 2, characterized in that, The current transformer energy harvesting module includes: a protection circuit, including a power regulation circuit for limiting output power and an overvoltage protection circuit for suppressing overvoltage surges.

4. The adaptive combined power supply system according to claim 1, characterized in that, The laser emission and control system includes: Laser power supply module, used to generate laser light of a specific wavelength; A precision temperature control system is used to maintain the operating temperature of the laser power supply module; and The communication control module is used to communicate bidirectionally with the intelligent power management module through the composite functional optical fiber.

5. An adaptive joint power supply method for high-voltage online monitoring equipment, characterized in that, Applied to the system as described in any one of claims 1-4, the method is executed by the intelligent power management module and includes the following steps: S1: Real-time monitoring of bus current I_bus, CT power P_ct, and total load power P_load; S2: Based on the bus current I_bus and the total load power P_load, smooth switching is performed between the three modes of laser-dominated, hybrid power supply and CT-dominated through fuzzy decision-making; S3: Based on the bus current I_bus, CT power P_ct, and total load power P_load, according to the selected mode and optimization objective function, generate control commands to dynamically adjust the output power of the laser emission and control system, and control the energy receiving and management unit to perform corresponding energy scheduling.

6. The method according to claim 5, characterized in that, Step S3 includes: When I_bus < A, it enters the laser-dominated low-current mode, controlling the laser to operate at high power as the main power supply, while using the weak CT energy harvesting power to trickle charge the energy storage unit, where A is the bus threshold current for enabling CT energy harvesting. When A ≤ I_bus < B, the system enters the medium current mode of hybrid power supply, calculates the optimal power point of the laser and instructs it to operate with reduced power. The load is shared by the current transformer energy harvesting module and the laser emission system, where B is the upper limit of the bus current when using laser power supply. When I_bus ≥ B, the system enters the high-current mode dominated by the CT, controlling the laser to enter standby or low-power state, and the current transformer power module takes over the entire load.

7. The method according to claim 6, characterized in that, In the medium current mode, the intelligent power management module calculates the optimal power point of the laser based on a preset optimization objective function, which aims to maximize the overall system efficiency and / or extend the laser's lifetime.

8. The method according to claim 6, characterized in that, In step S1, the continuously collected parameters also include laser temperature T_laser and ambient temperature T_ambient; in the mode switching step S2, the output power of the laser is dynamically compensated in combination with T_laser, and the system protection threshold is dynamically adjusted in combination with T_ambient.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for performing the method described in any one of claims 5-8.

10. An electronic device, characterized in that, The electronic device includes: processor; Memory used to store the processor's executable instructions; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method described in any one of claims 5-8.

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