Lightning protection method and lightning protection system for power distribution network, electronic equipment and storage medium

Abstract

The invention is suitable for the technical field of lightning protection, and provides a power distribution network lightning protection method and system, electronic equipment and a storage medium, and the method comprises the steps: collecting the real-time environment data of a power distribution network; calculating a target gap value based on the real-time environmental data; controlling the gap action in the lightning arrester branch based on the target gap value; acquiring a current current signal in response to the gap action; based on the current current signal, the state of the inductance resistor is adjusted to mitigate the impact of the lightning current. According to the technical scheme provided by the invention, the size of the gap in the lightning arrester branch is automatically adjusted according to the conditions of humidity, temperature, air pressure and the like in the environment, so that effective response to lightning overvoltage is realized; by adjusting the state of the inductance resistor, the impact of lightning current on a grounding grid is reduced, the size of the gap is automatically corrected, the power frequency follow current is reliably cut off, and the gap has the functions of resisting wind blowing, wire galloping and the like, so that the safety and the stability of a power distribution network in thunder and lightning weather are improved.

Description

Technical Field

[0001] The present application belongs to the field of lightning protection technology, and in particular relates to a distribution network lightning protection method, a lightning protection system, an electronic device, and a storage medium. Background Art

[0002] When lightning strikes a transmission line, a strong lightning current rapidly flows through the line and is discharged to the ground through the lightning arrester. During this process, the lightning current wave front is short and rises rapidly, exerting a strong impact on the transmission line grounding grid, lightning arrester, and other devices. Traditional lightning arresters are unable to effectively cope with this rapidly changing lightning current, potentially causing serious damage to the line. Furthermore, the discharge of lightning current can cause an abnormal increase in the potential of the line tower, increasing the risk of line strikeback failure. Furthermore, due to regional differences in tower and line environments, design, and the operating characteristic parameters of lightning arresters, the gap settings of gapped lightning arresters lack specificity, raising concerns about their reliability in interrupting the power frequency continuous current.

[0003] Therefore, how to improve the safety and stability of distribution networks during lightning weather has become an urgent problem to be solved. Summary of the Invention

[0004] The embodiments of the present application provide a distribution network lightning protection method, a lightning protection system, an electronic device, and a storage medium, aiming to improve the safety and stability of the distribution network during lightning weather.

[0005] In a first aspect, an embodiment of the present application provides a lightning protection method for a distribution network, the method comprising:

[0006] Collecting real-time environmental data of the distribution network, the real-time environmental data including humidity, temperature and air pressure; calculating a target gap value based on the real-time environmental data; controlling a gap action in a lightning arrester branch based on the target gap value; collecting a current current signal in response to the gap action; and adjusting a state of an inductor resistor based on the current current signal to mitigate the impact of lightning current.

[0007] In a possible implementation, adjusting the state of the inductor resistor based on the current current signal includes:

[0008] When the current signal is in a rising state, the inductor resistor is adjusted to a high inductance state, so as to utilize the characteristic of the inductor to suppress the sudden change of the current and suppress the current rising rate.

[0009] In a possible implementation, adjusting the state of the inductor resistor based on the current current signal includes:

[0010] When the current signal is in a decreasing state, the state of the inductor resistor is adjusted to reduce the inductance and increase the resistance, so as to consume the energy of the lightning current.

[0011] In a possible implementation, adjusting the state of the inductor resistor based on the current current signal includes:

[0012] When the current signal is less than a preset threshold, the inductor resistor is adjusted to a no-lightning-strike state.

[0013] In a second aspect, an embodiment of the present application provides a distribution network lightning protection system, comprising a signal acquisition terminal, an adaptive control device, a gap adjustment rod, and an arrester branch connected by wires, wherein the arrester branch comprises an arrester body and a gap;

[0014] The signal acquisition terminal is used to collect real-time environmental data of the power distribution network, and the real-time environmental data includes humidity, temperature and air pressure;

[0015] The adaptive control device is configured to calculate a target gap value based on the real-time environmental data; control a gap action in the arrester branch based on the target gap value; collect a current current signal in response to the gap action; and adjust a state of the inductor resistor based on the current current signal to mitigate the impact of the lightning current;

[0016] The gap adjustment rod is used to adjust the size of the gap to achieve gap action.

[0017] In a third aspect, an embodiment of the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method described in the first aspect or any one of the implementation methods thereof is implemented.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method described in the first aspect or any one of the implementation methods thereof.

[0019] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the method described in the first aspect or any one of the implementation methods.

[0020] Compared with the prior art, the embodiments of the present application have the following advantages: collecting real-time environmental data of the distribution network and calculating the target gap value based on the real-time environmental data; controlling the gap action in the lightning arrester branch based on the target gap value; collecting the current current signal in response to the gap action; and adjusting the state of the inductor and resistor based on the current current signal to reduce the impact of the lightning current. By adaptively controlling the gap size and the state of the inductor and resistor, the impact of the lightning current on the distribution network line is effectively suppressed, improving the lightning protection effect; the gap setting is more reasonable, can reliably cut off the power frequency continuous current, and has the ability to resist external influences, thereby enhancing the reliability of the system, reducing manual intervention, and simplifying the maintenance process.

[0021] It can be understood that the distribution network lightning protection system, electronic device, computer-readable storage medium and computer program product provided in the embodiments of the present application have the same beneficial effects as the above-mentioned distribution network lightning protection method, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A schematic diagram of a flow chart of a lightning protection method for a distribution network provided in one embodiment of the present application;

[0024] Figure 2 A schematic diagram of a lightning protection system for a power distribution network provided in one embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0027] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0028] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0029] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0030] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0031] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0032] Lightning strikes are one of the main causes of transmission line failures. When lightning strikes a transmission line, the lightning current has a short wave front time (microseconds) and a fast rise rate (up to hundreds of kiloamperes per microsecond), causing severe impacts on the line grounding grid, lightning protection equipment, and insulators. Traditional lightning protection equipment (such as zinc oxide lightning arresters and gap lightning arresters) has the following problems:

[0033] 1) Poor adaptability of fixed gap: The gap distance of traditional gap arresters is fixed and cannot be dynamically adjusted according to environmental conditions such as humidity, temperature and air pressure, resulting in low reliability of power frequency continuous current interruption and easy to cause secondary faults.

[0034] 2) Insufficient lightning current suppression capability: Existing equipment cannot effectively suppress the rapid rise and fall of lightning current, which causes an abnormal rise in the grounding grid potential and increases the risk of line strikeback.

[0035] In order to solve the above technical problems, the present application proposes a distribution network lightning protection method, which collects real-time environmental data of the distribution network, and the real-time environmental data includes humidity, temperature and air pressure; calculates the target gap value based on the real-time environmental data; controls the gap action in the lightning arrester branch based on the target gap value; collects the current current signal in response to the gap action; and adjusts the state of the inductor resistor based on the current current signal to reduce the impact of the lightning current, thereby improving the safety and stability of the distribution network in lightning weather.

[0036] For ease of understanding, the technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0037] Figure 1 This is a flow chart of a method for lightning protection of a distribution network provided in one embodiment of the present application. For ease of illustration, only the portion related to this embodiment is shown. The method provided in this embodiment includes the following steps:

[0038] S110, collecting real-time environmental data of the distribution network, the real-time environmental data including humidity, temperature and air pressure.

[0039] In a specific implementation, the adaptive control device uses a signal acquisition terminal to collect real-time environmental data such as current humidity, temperature and air pressure.

[0040] S120: Calculate a target gap value based on real-time environmental data.

[0041] As an example, after preprocessing parameters such as temperature, humidity, and air pressure in real-time environmental data, the critical breakdown voltage under the current environment is dynamically calculated based on the correction formula, and a safety margin of 20%-30% is added on this basis to determine the target breakdown voltage; then, based on the preset breakdown voltage-gap distance characteristic curve, the corresponding target gap value is calculated, where the correction formula can adopt the common critical breakdown voltage formula.

[0042] S130: Controlling the gap action in the arrester branch based on the target gap value.

[0043] In a specific implementation, the gap adjustment rod is used to adjust the size of the gap in the arrester branch to achieve gap action and make an effective response to lightning overvoltage.

[0044] S140 , in response to the gap action, collecting the current signal.

[0045] S150: Based on the current signal, adjust the state of the inductor resistor to reduce the impact of the lightning current.

[0046] In a possible implementation, when the current signal is in a rising state, the inductor resistor is adjusted to a high inductance state, so as to utilize the characteristic of the inductor to suppress current sudden changes and suppress the current rising rate.

[0047] In practice, when lightning current enters the distribution network conductor, the gap in the arrester branch activates, causing the current in the arrester branch to rise rapidly. At this point, the adaptive control device collects the current signal and adjusts the inductor resistor to a high inductance state, leveraging the inductor's ability to suppress sudden current changes and thus slowing the rate of current rise.

[0048] Rogowski coil inductors and resistors are installed at key locations in the arrester branches. Their function is to convert the high current on the high-voltage side into a small current signal that can be processed by the measurement circuit at a certain ratio. Their non-contact measurement, resistance to magnetic field interference, and strong insulation properties allow for real-time acquisition of lightning current signals. These weak current signals are amplified and filtered out of high-frequency noise by an operational amplifier-based conditioning circuit. The analog input module then converts these signals into digital signals for transmission to the adaptive control device's core controller. The control device's hardware core utilizes a high-performance DSP chip, and its software system comprises three modules: current signal analysis, control algorithms, and drive signal generation.

[0049] Among them, the current signal analysis module monitors the current change trend in real time, and confirms the intrusion event through the lightning current identification algorithm when it detects that the current amplitude and change rate exceed the threshold; the control algorithm module dynamically calculates the optimal suppression parameters based on the current change characteristics; the drive signal generation module outputs adjustment instructions to the inductor resistor adjustment circuit.

[0050] Specifically, the inductor resistor consists of a variable inductor coil and a high-power resistor. The variable inductor coil uses an iron core structure to change the inductance value by adjusting the core position or the number of coil turns. The resistor part adjusts the resistance value by switching between series and parallel states through a power electronic switch. After the DSP issues a command, the adjustment circuit drives the actuator to switch the inductor resistor to a high inductance state within milliseconds. When a lightning current intrudes, the arrester branch gap breaks down first to establish a low-impedance discharge path. The Rogowski coil collects the current surge signal. The DSP identifies the lightning current within hundreds of microseconds and initiates control. The inductor resistor switches to high inductance mode, using the inductor's characteristic of hindering current mutations to strongly suppress the current rise rate. The control algorithm dynamically adjusts the inductance / resistance value based on real-time current feedback, limiting the lightning current amplitude and energy to the safe tolerance range of the conductors and equipment. The current decay state is monitored throughout the process, and the system automatically resets after the lightning current subsides.

[0051] Through the coordinated implementation of rapid gap discharge and adaptive inductance suppression, the initial discharge efficiency of lightning current is guaranteed. At the same time, dynamic regulation effectively suppresses current steep slopes, significantly reducing the risk of induced overvoltage in distribution network conductors and equipment damage.

[0052] In another possible implementation, when the current signal is in a decreasing state, the state of the inductor resistor is adjusted to reduce the inductance and increase the resistance to consume the energy of the lightning current.

[0053] In specific implementation, when lightning current invades, the gap between the lightning arrester branches breaks down first, establishing a low-impedance discharge path. The Rogowski coil collects the current surge signal, and the DSP identifies the lightning current within hundreds of microseconds and starts regulation. The inductor resistor switches to high inductance mode, using the characteristic of inductance to hinder current mutations to strongly suppress the current rise rate. When the current reaches its peak and begins to decline, the system quickly identifies the current decline phase, and the control algorithm calculates the optimal inductance and resistance values ​​in real time, driving the inductor resistor adjustment circuit to reduce the inductance and increase the resistance to consume the remaining energy of the lightning current. As the current rises to its peak, the lightning current gradually begins to decline. The adaptive control device (DSP) collects the current signal analysis and obtains that when the current is in a declining state, it controls the inductor resistor to reduce the inductance and increase the resistance state, so that the lightning current quickly consumes energy and reduces the impact of the lightning current on the grounding grid.

[0054] In yet another possible implementation, when the current signal is less than a preset threshold, the inductor resistor is adjusted to a no-lightning-strike state.

[0055] In a specific implementation, after the adaptive control device detects that the current of the arrester branch is reduced to a preset threshold, it adjusts the state of the entire system to a no-lightning-strike state.

[0056] The technical solution provided by this application collects real-time environmental data from the distribution network and calculates a target gap value based on that data; controls the gap action in the arrester branch based on the target gap value; collects the current current signal in response to the gap action; and adjusts the state of the inductor resistor based on the current current signal to mitigate the impact of lightning current. By adaptively controlling the gap size and the state of the inductor resistor, the impact of lightning current on the distribution network line is effectively suppressed, improving the lightning protection effect. The gap setting is more reasonable, can reliably cut off the power frequency continuous current, and has the ability to resist external influences, enhancing system reliability, reducing manual intervention, and simplifying the maintenance process.

[0057] Figure 2 A schematic diagram of a lightning protection system for a power distribution network provided in one embodiment of the present application is shown in FIG. Figure 2 As shown, it includes a signal acquisition terminal, an adaptive control device, a gap adjustment rod and a lightning arrester branch connected by wires, and the lightning arrester branch includes a lightning arrester body and a gap.

[0058] Specifically, the signal acquisition terminal is used to collect real-time environmental data of the distribution network, and the real-time environmental data includes humidity, temperature and air pressure; the adaptive control device is used to calculate the target gap value based on the real-time environmental data; the gap action in the lightning arrester branch is controlled based on the target gap value; in response to the gap action, the current current signal is collected; based on the current current signal, the state of the inductor resistor is adjusted to reduce the impact of the lightning current; the gap adjustment rod is used to adjust the size of the gap to achieve gap action.

[0059] Specifically, the adaptive control device collects and pre-processes environmental parameters such as temperature, humidity, and air pressure in real time, then dynamically calculates the critical breakdown voltage under the current environment based on a correction formula. It then adds a 20%-30% safety margin to determine the target breakdown voltage. It then calculates the corresponding target gap distance based on a preset breakdown voltage-gap distance characteristic curve, and precisely adjusts the gap to the target distance via a motor-driven gap adjustment rod. Simultaneously, the device simulates a small current pulse to test the actual breakdown voltage, reversely calibrates the environmental correction model, and achieves closed-loop optimization. This ensures that factors such as lightning waveform steepness, equipment insulation tolerance, and historical failure statistics are reliably accounted for, ultimately achieving precise determination and dynamic adjustment of the gap value. The correction formula can use the common critical breakdown voltage formula.

[0060] In specific implementation, adaptive control devices and signal acquisition terminals are installed at key locations of the distribution network, and initial configuration is performed, including setting the initial value of the gap, the initial state of the inductor resistor, etc.; the signal acquisition terminal collects real-time environmental data such as humidity, temperature and air pressure in the environment, and transmits the data to the adaptive control device; the adaptive control device calculates the target gap value based on the collected real-time environmental data, and controls the gap adjustment rod to adjust the size of the gap; when lightning current enters the distribution network conductor, the adaptive control device monitors the current signal through the current sensor, and adjusts the state of the inductor resistor according to the change of the current signal to suppress the current rise rate or consume the lightning current energy. When the adaptive control device detects that the current of the lightning arrester branch is reduced to a preset threshold, the control logic switches the state of the entire system to a no-lightning state, waiting for the next lightning strike event to be processed.

[0061] As an example, a distribution network lightning protection system also includes insulators, which provide electrical insulation. In distribution networks, overvoltages can be generated by natural factors like lightning or equipment failures. These overvoltages can be transmitted through conductors to surrounding equipment or people, causing damage. Insulators, with their high resistivity and low conductivity, effectively block the transmission paths of these overvoltages, protecting equipment and personnel.

[0062] As another example, the distribution network lightning protection system also includes crossarms, which are used to install insulators, etc. to support conductors, lightning conductors, etc., providing a stable installation foundation for lightning protection equipment such as lightning arresters, so that they can be arranged in the specified position and direction, thereby ensuring the effective implementation of the lightning protection effect.

[0063] In summary, the technical solutions provided by this application can be summarized as follows:

[0064] 1) Signal acquisition and gap adjustment: The adaptive control device uses the signal acquisition terminal to collect data such as humidity, temperature and air pressure in the environment, selects the appropriate air gap through calculation, and uses the gap adjustment rod to adjust the size of the gap in the lightning arrester branch.

[0065] 2) Current Signal Acquisition and Processing: When lightning current enters the distribution network conductor, the gaps in the arrester branches activate, causing the current to rise rapidly. After collecting the current signal, the adaptive control device adjusts the inductor and resistor to a high inductance state, suppressing the current's rise rate. As the current reaches its peak and begins to decline, the adaptive control device controls the inductor and resistor to reduce inductance and increase resistance, rapidly dissipating the lightning current energy.

[0066] 3) State adjustment: When the adaptive control device detects that the current of the arrester branch has decreased to a preset threshold, the state of the entire system is adjusted to a no-lightning state.

[0067] Based on the above, the technical solution provided by this application has the following innovations:

[0068] 1) Adaptive control capability: An adaptive control device is designed that can automatically adjust the gap size in the lightning arrester branch according to environmental data such as humidity, temperature, and air pressure, thereby achieving an effective response to lightning overvoltage.

[0069] 2) Current suppression and consumption: When lightning current enters the distribution network conductor, the current rise rate is suppressed by adjusting the state of the inductor resistor, and energy is quickly consumed when the current decreases, thereby reducing the impact of lightning current on the grounding grid.

[0070] 3) Improved reliability: By automatically correcting the gap size, the power frequency continuous current can be reliably cut off, and the gap has the ability to resist external influences such as wind and conductor dancing.

[0071] Furthermore, the technical solution provided in this application realizes adaptive regulation of distribution network lightning protection, suppresses the rapid rise of current during lightning current intrusion, and accelerates the absorption process of lightning current during the downward process; automatically corrects the gap size according to environmental conditions such as installation location, temperature, humidity and air pressure in the area (based on the design parameters of the air medium during lightning strikes), reliably cuts off the power frequency continuous current, and the gap has the ability to resist the influence of wind blowing and conductor dancing.

[0072] Figure 3 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application. Figure 3 As shown, the electronic device 3 of this embodiment includes: at least one processor 30 ( Figure 3 Only one is shown), a memory 31 and a computer program 32 stored in the memory 31 and executable on at least one processor 30, the processor 30 executes the computer program 32 to implement the above Figure 1Steps in a method embodiment.

[0073] The electronic device 3 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device 3 may include but is not limited to a processor 30 and a memory 31. Those skilled in the art will understand that Figure 3 This is merely an example of the electronic device 3 and does not constitute a limitation on the electronic device 3 . The electronic device 3 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device 3 may also include input and output devices, network access devices, etc.

[0074] The processor 30 may be a central processing unit (CPU), or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0075] In some embodiments, the memory 31 may be an internal storage unit of the electronic device 3, such as a hard disk or memory of the electronic device 3. In other embodiments, the memory 31 may also be an external storage device of the electronic device 3, such as a plug-in hard disk equipped on the electronic device 3, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Furthermore, the memory 31 may include both an internal storage unit of the electronic device 3 and an external storage device. The memory 31 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of a computer program. The memory 31 may also be used to temporarily store data that has been output or is about to be output.

[0076] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0077] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program, when executed by the processor, can implement the steps of the above-mentioned various method embodiments. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include at least: any entity or device capable of carrying the computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electric carrier signal, a telecommunication signal and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk.

[0078] A computer-readable storage medium provided in an embodiment of the present application has the same beneficial effects as the above-mentioned distribution network lightning protection method.

[0079] An embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it can implement the steps in the above-mentioned method embodiments.

[0080] A computer program product provided in an embodiment of the present application has the same beneficial effects as the above-mentioned distribution network lightning protection method.

[0081] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0082] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0083] In the embodiments provided in this application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0084] Units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0085] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A lightning protection method for a distribution network, characterized in that: The method comprises: Collecting real-time environmental data of the distribution network, including humidity, temperature and air pressure; Calculating a target gap value based on the real-time environmental data; controlling a gap action in a lightning arrester branch based on the target gap value; In response to the gap action, collecting a current signal; Based on the current signal, the state of the inductor resistor is adjusted to reduce the impact of the lightning current.

2. The method according to claim 1, characterized in that The step of adjusting the state of the inductor resistor based on the current current signal includes: When the current signal is in a rising state, the inductor resistor is adjusted to a high inductance state, so as to utilize the characteristic of the inductor to suppress the sudden change of current and suppress the current rising rate.

3. The method according to claim 1, characterized in that The step of adjusting the state of the inductor resistor based on the current current signal includes: When the current signal is in a decreasing state, the state of the inductor resistor is adjusted to reduce the inductance and increase the resistance, so as to consume the energy of the lightning current.

4. The method according to claim 1, wherein The step of adjusting the state of the inductor resistor based on the current current signal includes: When the current signal is less than a preset threshold, the inductor resistor is adjusted to a no-lightning-strike state.

5. A lightning protection system for a distribution network, characterized in that: It includes a signal acquisition terminal, an adaptive control device, a gap adjustment rod and a lightning arrester branch connected by wires, and the lightning arrester branch includes a lightning arrester body and a gap; The signal acquisition terminal is used to collect real-time environmental data of the power distribution network, and the real-time environmental data includes humidity, temperature and air pressure; The adaptive control device is used to calculate the target gap value based on the real-time environmental data; controlling a gap action in the arrester branch based on the target gap value; In response to the gap action, collecting a current signal; Based on the current signal, adjusting the state of the inductor resistor to reduce the impact of the lightning current; The gap adjustment rod is used to adjust the size of the gap to achieve gap action.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 4 is implemented.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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