Straight-through lightning arrester, signal processing method and related device

Abstract

The invention provides a feed-through lightning arrester, a signal processing method and a related device. The method comprises the following steps: inputting a first electric signal; converting the first electric signal into a second electric signal; detecting whether the second electric signal meets a preset condition; wherein when the second electric signal meets a preset condition, it is determined that a lightning stroke event occurs; when the second electric signal does not meet the preset condition, determining that no lightning stroke event occurs; obtaining target environment parameters; determining a first signal processing parameter corresponding to the target environment parameter; when the second electric signal meets a preset condition, processing the second electric signal through the first signal processing parameter to obtain a third electric signal; the third electric signal is converted into a digital signal, a target state parameter of the lightning stroke event is determined according to the digital signal, and the target state parameter is used for indicating the cross-core lightning arrester to execute corresponding protection operation. According to the embodiment of the invention, the intelligence of the lightning arrester can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of signal processing, and in particular to a through-hole lightning arrester, a signal processing method and related devices. Background Art

[0002] At present, in order to reduce the tripping of circuit breakers caused by lightning overvoltage in transmission lines, lightning arresters for high-voltage transmission lines have played a huge role and have been widely used. To a certain extent, the performance of lightning arresters for transmission lines directly affects the safe operation of the power system. In the existing technology, lightning arresters are not intelligent enough, so the problem of how to improve the intelligence of lightning arresters needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide a through-hole lightning arrester, a signal processing method and related devices, which can improve the intelligence of the lightning arrester.

[0004] In a first aspect, an embodiment of the present application provides a through-hole lightning arrester, the through-hole lightning arrester comprising: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the lightning signal processing circuit, and the processor is also connected to the environmental sensor; wherein, The signal input module is used to input a first electrical signal; The Rogowski coil is used to convert the first electrical signal into a second electrical signal; The lightning strike trigger signal detection circuit is used to detect whether the second electrical signal meets a preset condition; wherein, when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that the lightning strike event has not occurred; The environmental sensor is used to obtain target environmental parameters; The processor is configured to determine a first signal processing parameter corresponding to the target environmental parameter; The lightning signal processing circuit is used to process the second electrical signal according to the first signal processing parameter to obtain a third electrical signal when the second electrical signal meets the preset condition; The processor is further used to convert the third electrical signal into a digital signal, and determine a target state parameter of the lightning strike event according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

[0005] In a second aspect, an embodiment of the present application provides a signal processing method, which is applied to the through-hole lightning arrester as described in the first aspect, and the method includes: inputting a first electrical signal; converting the first electrical signal into a second electrical signal; Detecting whether the second electrical signal satisfies a preset condition; wherein, when the second electrical signal satisfies the preset condition, determining that a lightning strike event has occurred; and when the second electrical signal does not satisfy the preset condition, determining that the lightning strike event has not occurred; Get target environment parameters; determining a first signal processing parameter corresponding to the target environmental parameter; When the second electrical signal meets the preset condition, processing the second electrical signal by using the first signal processing parameter to obtain a third electrical signal; The third electrical signal is converted into a digital signal, and a target state parameter of the lightning strike event is determined according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

[0006] In a third aspect, an embodiment of the present application provides a signal processing device, which is applied to the through-hole lightning arrester as described in the first aspect, and the device includes: an input unit, a conversion unit, a detection unit, an acquisition unit, a determination unit and a processing unit, wherein: The input unit is used to input a first electrical signal; The conversion unit is used to convert the first electrical signal into a second electrical signal; The detection unit is used to detect whether the second electrical signal meets a preset condition; wherein, when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that the lightning strike event has not occurred; The acquisition unit is used to acquire target environment parameters; The determining unit is used to determine a first signal processing parameter corresponding to the target environment parameter; The processing unit is used to process the second electrical signal through the first signal processing parameter to obtain a third electrical signal when the second electrical signal meets the preset condition; and convert the third electrical signal into a digital signal, and determine the target state parameters of the lightning strike event according to the digital signal, wherein the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations.

[0007] In a fourth aspect, an embodiment of the present application provides a through-hole lightning arrester, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps in the second aspect of the embodiment of the present application.

[0008] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in the second aspect of the embodiment of the present application.

[0009] In a sixth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the second aspect of the embodiment of the present application. The computer program product may be a software installation package.

[0010] The implementation of the embodiments of the present application has the following beneficial effects: It can be seen that a through-hole lightning arrester, signal processing method and related device described in the embodiment of the present application, the through-hole lightning arrester includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; wherein the signal input module is used to input a first electrical signal; the Rogowski coil is used to convert the first electrical signal into a second electrical signal; the lightning trigger signal detection circuit is used to detect whether the second electrical signal meets a preset condition; wherein when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that no lightning strike event has occurred; the environmental sensor is used to obtain target environmental parameters; the processor is used to determine a first signal processing parameter corresponding to the target environmental parameter; the lightning signal processing circuit is used to When the second electrical signal meets the preset condition, the second electrical signal is processed by the first signal processing parameter to obtain a third electrical signal; the processor is also used to convert the third electrical signal into a digital signal, and determine the target state parameters of the lightning strike event according to the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations. In this way, firstly, since the lightning trigger signal detection circuit and the lightning signal processing circuit are connected in parallel between the Rogowski coil and the processor, and the response speed of the lightning trigger signal detection circuit is faster than that of the lightning signal processing circuit, the lightning trigger signal detection circuit can be used to quickly identify the lightning strike event. Secondly, after the lightning strike event is identified, the signal processing parameters suitable for the actual environment can be determined, and the signal processing parameters can be used based on the lightning signal processing circuit to accurately process the electrical signal. The signal processing accuracy is higher, which helps to improve the accurate identification of lightning strike signals, and do some screening to prevent false triggering, increase the product's anti-interference ability, and thus improve the intelligence of the lightning arrester. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0012] Figure 1 It is a structural schematic diagram of a through-hole arrester provided in an embodiment of the present application; Figure 2 This is a method provided by the embodiment of the present application. Figure 1 A schematic diagram of the structure of a lightning trigger signal detection circuit in a through-hole lightning arrester shown; Figure 3This is another example provided by the embodiment of the present application. Figure 1 A schematic diagram of the structure of a lightning trigger signal detection circuit in a through-hole lightning arrester shown; Figure 4 This is a method provided by the embodiment of the present application. Figure 1 A schematic diagram of the structure of a lightning signal processing circuit in a through-hole lightning arrester shown; Figure 5 This is a method provided by the embodiment of the present application. Figure 1 A schematic diagram of the structure of a lightning signal processing circuit in a through-hole lightning arrester shown; Figure 6 is a flowchart of a signal processing method provided in an embodiment of the present application; Figure 7 It is a structural schematic diagram of another through-hole arrester provided in an embodiment of the present application; Figure 8 It is a block diagram of the functional units of a signal processing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0013] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but in a possible example also includes steps or units that are not listed, or in a possible example also includes other steps or units inherent to these processes, methods, products or devices.

[0014] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0015] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0016] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of a through-hole lightning arrester provided by an embodiment of the present application. As shown in the figure, the through-hole lightning arrester includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor. The signal input module is connected to the Rogowski coil, and the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the lightning signal processing circuit. The processor is also connected to the environmental sensor; wherein, The signal input module is used to input a first electrical signal; The Rogowski coil is used to convert the first electrical signal into a second electrical signal; The lightning strike trigger signal detection circuit is used to detect whether the second electrical signal meets a preset condition; wherein, when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that the lightning strike event has not occurred; The environmental sensor is used to obtain target environmental parameters; The processor is configured to determine a first signal processing parameter corresponding to the target environmental parameter; The lightning signal processing circuit is used for processing the second electrical signal by using the first signal processing parameter to obtain a third electrical signal when the second electrical signal meets the preset condition; The processor is further used to convert the third electrical signal into a digital signal, and determine a target state parameter of the lightning strike event according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

[0017] Among them, the preset conditions can all be set in advance or set by system default.

[0018] In a specific implementation, the signal input module can receive electrical signals sent by external devices or external components. Of course, the signal input module can also directly receive electrical signals in the environment (air).

[0019] In the embodiment of the present application, the Rogowski coil can be used to convert a first electrical signal into a second electrical signal, and the first electrical signal is also an electrical signal within a period of time. Specifically, the current signal can be converted into a voltage signal.

[0020] In the embodiment of the present application, the first electrical signal may include at least one of the following: a current signal, a voltage signal, the second electrical signal may include at least one of the following: a current signal, a voltage signal, and the third electrical signal may include at least one of the following: a current signal, a voltage signal.

[0021] Among them, in a specific implementation, the lightning trigger signal detection circuit can amplify the second electrical signal and detect whether the amplified second electrical signal meets the preset conditions. When the second electrical signal meets the preset conditions, it is determined that a lightning strike event has occurred. Conversely, when the second electrical signal does not meet the preset conditions, it is determined that no lightning strike event has occurred. In this way, since the second electrical signal is amplified, it helps to ensure detection sensitivity and can ensure the efficiency of lightning strike event detection.

[0022] The target environment parameters may include at least one of the following: weather, temperature, humidity, magnetic field interference parameters, atmospheric pressure, etc., which are not limited here.

[0023] The target state parameters may include at least one of the following: lightning strike severity level, lightning strike type, number of lightning strikes, lightning strike hazard level, etc., which are not limited here.

[0024] Optionally, the lightning trigger signal detection circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first amplifier, a first capacitor, and a first voltage regulator diode; wherein, The first input end and the second input end of the lightning trigger signal detection circuit are connected to the Rogowski coil, the first input end is connected to the inverting input end of the first amplifier through the first resistor, and the first input end is also connected to the output end of the lightning trigger signal detection circuit through the first resistor and the fourth resistor; the output end is connected to the processor; The second input end of the lightning trigger signal detection circuit is connected to the first reference voltage through the second resistor and the third resistor, and the second input end is connected to the non-inverting input end of the first amplifier through the second resistor; one power supply pin of the first amplifier is grounded, and the other power supply pin is connected to the first power supply and grounded through the first capacitor; The output end of the first amplifier is connected to the output end of the lightning trigger signal detection circuit, and the output end of the first amplifier is grounded through the first voltage regulator diode.

[0025] In the specific implementation, Figure 2 As shown, the lightning trigger signal detection circuit includes a first input terminal (T1), a second input terminal (T2) and an output terminal (T3).

[0026] Furthermore, in the specific implementation, Figure 3As shown, the lightning trigger signal detection circuit comprises a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a first amplifier (U1), a first capacitor (C1), and a first voltage stabilizing diode (D1); wherein the first input terminal (T1) and the second input terminal (T2) of the lightning trigger signal detection circuit are connected to the Rogowski coil, the first input terminal (T1) is connected to the inverting input terminal (-) of the first amplifier (U1) through the first resistor (R1), and the first input terminal (T1) is also connected to the output terminal (T3) of the lightning trigger signal detection circuit through the first resistor (R1) and the fourth resistor (R4); and the output terminal (T3) is connected to the processor. The second input end (T2) of the lightning trigger signal detection circuit is connected to the first reference voltage (VREF1) through the second resistor (R2) and the third resistor (R3), and the second input end (T2) is connected to the positive phase input end (+) of the first amplifier (U1) through the second resistor (R2); one power supply pin of the first amplifier (U1) is grounded (GND), and the other power supply pin is connected to the first power supply (V1) and grounded (GND) through the first capacitor (C1). The output end of the first amplifier (U1) is connected to the output end (T3) of the lightning trigger signal detection circuit, and the output end of the first amplifier (U1) is grounded (GND) through the first voltage stabilizing diode (D1).

[0027] Since the first reference voltage (VREF1) is known, the first amplifier (U1) can compare and amplify the electrical signals input from the inverting input terminal (-) and the non-inverting input terminal (+). Since no feedback is required, Figure 5 In comparison, the signal processing response will be faster and can be used as a trigger signal.

[0028] Optionally, the lightning signal processing circuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second amplifier, a second capacitor, a third capacitor, and a second voltage-stabilizing diode; wherein, The first port and the second port of the lightning signal processing circuit are connected to the Rogowski coil, the first port is connected to the inverting input terminal of the second amplifier through the fifth resistor, the first port is also connected to the third port of the lightning signal processing circuit through the fifth resistor and the eighth resistor, the first port is also connected to the third port of the lightning signal processing circuit through the fifth resistor and the third capacitor; the third port is connected to the processor; The second port of the lightning signal processing circuit is connected to the second reference voltage through the sixth resistor and the seventh resistor, and the second port is connected to the non-inverting input terminal of the second amplifier through the sixth resistor; one power supply pin of the second amplifier is grounded, and the other power supply pin is connected to the second power supply and grounded through the second capacitor; The output end of the second amplifier is connected to the third port of the lightning signal processing circuit, and the output end of the second amplifier is grounded through the second voltage regulator diode.

[0029] In the specific implementation, Figure 4 As shown, the lightning signal processing circuit includes a first port (P1), a second port (P2) and a third port (P3).

[0030] Furthermore, in the specific implementation, Figure 5 As shown, the lightning signal processing circuit includes a fifth resistor (R5), a sixth resistor (R6), a seventh resistor (R7), an eighth resistor (R8), a second amplifier (U2), a second capacitor (C2), a third capacitor (C3), and a second voltage stabilizing diode (D2); wherein the first port (P1) and the second port (P2) of the lightning signal processing circuit are connected to the Rogowski coil, the first port (P1) is connected to the inverting input terminal (-) of the second amplifier (U5) through the fifth resistor (R5), the first port (P1) is also connected to the third port (P3) of the lightning signal processing circuit through the fifth resistor (R5) and the eighth resistor (R8), and the first port (P1) is also connected to the third port (P3) of the lightning signal processing circuit through the fifth resistor (R5) and the third capacitor (C3); the third port (P3) is connected to the processor. The second port (P2) of the lightning signal processing circuit is connected to the second reference voltage (VREF2) through the sixth resistor (R6) and the seventh resistor (R7), and the second port (P2) is connected to the non-phase input terminal (+) of the second amplifier (U2) through the sixth resistor (R6); one power supply pin of the second amplifier (U2) is grounded (GND), and the other power supply pin is connected to the second power supply (V2) and grounded (GND) through the second capacitor (C2). The output end of the second amplifier (U2) is connected to the third port (P3) of the lightning signal processing circuit, and the output end of the second amplifier (U2) is grounded (GND) through the second voltage stabilizing diode (D2).

[0031] The fifth resistor (R5), the seventh resistor (R7), the second amplifier (U2), and the third capacitor (C3) can form an integration circuit, and the second electrical signal can be integrated through the integration circuit.

[0032] Among them, since the second reference voltage (VREF2) is known, the second amplifier (U2) can compare and amplify the electrical signals inputted from the inverting input terminal (-) and the non-inverting input terminal (+). Since the third capacitor (C3) and the eighth resistor (R8) form a feedback circuit, in addition, to a certain extent, the electrical signals can also be accurately processed. Therefore, Figure 3 In comparison, the signal processing accuracy is higher, which helps to improve the accuracy of identifying lightning signals, as well as do some screening to prevent false triggering and increase the product's anti-interference ability.

[0033] The first reference voltage and the second reference voltage may be the same or different, and the first power supply and the second power supply may be the same or different.

[0034] Among them, the processor may include a microprocessor (Microcontroller Unit, MCU), and the MCU has two terminals (one wake-up terminal and the other signal input terminal). The wake-up terminal is connected to the output terminal of the lightning trigger signal detection circuit, and the signal input terminal is the output terminal of the lightning signal processing circuit. The MCU is normally in a low power mode, such as a sleep mode. After the lightning trigger signal detection circuit outputs a trigger signal, the MCU is awakened and can receive the signal from the lightning signal processing circuit for analysis. When the lightning trigger signal detection circuit does not output a trigger signal, the MCU is still in sleep mode, thereby reducing the power consumption of the MCU (after all, the probability of lightning strike is very small, and the MCU does not need to monitor all the time), saving MCU resources.

[0035] In a specific implementation, a mapping relationship between preset environmental parameters and signal processing parameters can be pre-stored, and then, a first signal processing parameter corresponding to the target environmental parameter can be determined based on the mapping relationship, wherein the signal processing parameter may include at least one of the following: the size of the fifth resistor, the size of the sixth resistor, the size of the seventh resistor, the size of the eighth resistor, the size of the second amplifier, the size of the second capacitor, the size of the third capacitor, the size of the second voltage zener diode, etc., which are not limited here.

[0036] Furthermore, when the second electrical signal meets the preset condition, the lightning signal processing circuit can process the second electrical signal through the first signal processing parameter to obtain a third electrical signal, and then convert the third electrical signal into a digital signal. In a specific implementation, the digital signal can be feature extracted to obtain the target feature, and the target state parameter of the lightning event corresponding to the target feature is determined according to the mapping relationship between the preset feature and the state parameter. The target state parameter is used to instruct the through-hole lightning arrester to perform the corresponding protection operation. The target feature may include one or more features, and the feature may include at least one of the following: feature value, feature point, feature vector, etc., which are not limited here.

[0037] In the specific implementation, the lightning circuit processing is generally only done through the integration circuit, and the lightning signal needs to be monitored all the time at the signal processing end. For conventional processors, it is a waste of processor resources, and for devices that need outdoor battery power supply, the power consumption will also increase accordingly; Figure 3 The circuit of the lightning trigger signal detection circuit is equivalent to the following Figure 5 The lightning signal processing circuit shown in the figure has one less capacitor (C3), so the signal conversion will be relatively faster in processing the lightning signal that also passes through the Rogowski coil, and the signal processing response will be faster, which can be used as a trigger signal. Figure 5 The integrator circuit in the lightning signal processing circuit shown in the figure can be analyzed together. The integrator circuit can perform analysis and processing after receiving the trigger signal. Figure 5 The signal in the lightning signal processing circuit shown. At the same time, through this combination, some screening can be done to prevent false triggering and increase the product's anti-interference ability. This circuit combination can also be used to achieve different levels of trigger screening methods.

[0038] Optionally, the second electrical signal is an electrical signal within a period of time; in terms of detecting whether the second electrical signal meets a preset condition, the lightning trigger signal detection circuit is specifically used to: Perform fitting according to the second electrical signal to obtain a first fitting straight line and a fitting curve segment within the period of time; determining a first slope of the first fitted straight line; Determine the maximum point and the minimum point of the fitting curve segment to obtain multiple maximum points and multiple minimum points; Determine a first standard deviation according to the plurality of maximum value points and the plurality of minimum value points; Performing fitting according to the multiple maximum value points to obtain a second fitting straight line, obtaining an absolute value of a second slope of the second fitting straight line, and obtaining a first absolute value; Perform fitting according to the multiple minimum value points to obtain a third fitting straight line, obtain the absolute value of the third slope of the third fitting straight line, and obtain a second absolute value; determining a first relative deviation between the first absolute value and the second absolute value; Determine an optimization factor corresponding to the first relative deviation to obtain a first optimization factor; Optimizing the first standard deviation according to the first optimization factor to obtain a second standard deviation; Whether the second electrical signal meets the preset condition is detected according to the first slope and the second standard deviation.

[0039] In a specific implementation, the second electrical signal is an electrical signal within a period of time, that is, the second electrical signal may include current values ​​corresponding to multiple time points. Each current value and its corresponding time point can be regarded as a coordinate point. Fitting can be performed based on the second electrical signal to obtain a first fitting straight line and a fitting curve segment within a period of time. The horizontal axis of the first fitting straight line and the fitting curve segment are both time and the vertical axis is the current value. The slope of the first fitting straight line can also be determined to obtain a first slope. The first slope reflects the changing trend of the electrical signal to a certain extent.

[0040] Furthermore, the maximum and minimum points of the fitting curve segment can be determined to obtain multiple maximum and minimum points, and the standard deviation is calculated based on the multiple maximum and minimum points to obtain the first standard deviation. The first standard deviation reflects the stability of the second electrical signal to a certain extent.

[0041] Next, since each maximum point corresponds to a time point and a current value, it also corresponds to a coordinate point. Then, fitting can be performed based on multiple maximum points to obtain a second fitting straight line, obtain the slope of the second fitting straight line, obtain the second slope, obtain the absolute value of the second slope, and obtain the first absolute value.

[0042] Correspondingly, since each minimum point corresponds to a time point and a current value, it also corresponds to a coordinate point. Fitting can be performed based on multiple minimum points to obtain a third fitting straight line, and the slope of the third fitting straight line is obtained to obtain the third slope. The absolute value of the third slope is obtained to obtain the second absolute value, and then the first relative deviation between the first absolute value and the second absolute value is determined. The first relative deviation = (first absolute value - second absolute value) / (first absolute value + second absolute value). The first absolute value reflects the upper stability of the second electrical signal, and the second absolute value reflects the lower stability of the second electrical signal. The first relative deviation reflects the direction of stability deviation and the degree of stability deviation to a certain extent.

[0043] Furthermore, a mapping relationship between a preset relative deviation and an optimization factor can be pre-stored, and then, based on the mapping relationship, the optimization factor corresponding to the first relative deviation can be determined to obtain the first optimization factor, and then the first standard deviation can be optimized according to the first optimization factor to obtain the second standard deviation, the second standard deviation = (1 + first optimization factor) * first standard deviation, and then the second electrical signal can be detected based on the first slope and the second standard deviation to see whether it meets the preset conditions. On the one hand, the stability of the second electrical signal can be dynamically optimized based on the stability deviation direction and the stability deviation degree. On the other hand, the changing trend and stability of the electrical signal can be used to identify lightning strike events, thereby improving the accuracy of lightning strike event detection.

[0044] Optionally, in the aspect of detecting whether the second electrical signal satisfies the preset condition according to the first slope and the second standard deviation, the lightning trigger signal detection circuit is specifically used for: When the first slope is within a first preset range and the second standard deviation is within a second preset range, determining that the second electrical signal satisfies the preset condition; When the first slope is not within the first preset range, and, or, the second standard deviation is not within the second preset range, it is determined that the second electrical signal does not satisfy the preset condition.

[0045] The first preset range and the second preset range may be preset or set by system default.

[0046] In an embodiment of the present application, when the first slope is within the first preset range and the second standard deviation is within the second preset range, it is determined that the second electrical signal satisfies the preset condition, and then it is determined that a lightning strike event has occurred; when the first slope is not within the first preset range, and, or, the second standard deviation is not within the second preset range, it is determined that the second electrical signal does not satisfy the preset condition, and then it is determined that the lightning strike event has not occurred. In this way, the changing trend and stability of the electrical signal can be used to identify lightning strike events, and the accuracy of lightning strike event detection can be improved.

[0047] Optionally, the method further includes: Acquire a reference preset range corresponding to the target environmental parameter, wherein the reference preset range includes an upper limit parameter and a lower limit parameter; Obtaining a first hardware environment parameter and a first software environment parameter of the through-hole lightning arrester; Determining a first adjustment parameter corresponding to the first hardware environment parameter; Determining a second adjustment parameter corresponding to the first software environment parameter; Adjust the lower limit parameter according to the first adjustment parameter to obtain a target lower limit parameter; Adjust the upper limit parameter according to the second adjustment parameter to obtain a target upper limit parameter; The first preset range is determined according to the target lower limit parameter and the target upper limit parameter.

[0048] In a specific implementation, the mapping relationship between the preset environmental parameters and the preset ranges can be pre-stored, and then, based on the mapping relationship, a reference preset range corresponding to the target environmental parameters can be obtained. The reference preset range includes an upper limit parameter and a lower limit parameter. In this way, the change trend range of the electrical signal corresponding to the actual environment can be obtained, thereby preliminarily improving the accuracy of lightning strike event detection.

[0049] Among them, the first hardware environment parameters of the through-hole lightning arrester may include at least one of the following: hardware parameters of the lightning trigger signal detection circuit, hardware parameters of the processor, etc., which are not limited here. The hardware parameters of the lightning trigger signal detection circuit may include at least one of the following: the size of the first reference signal, the size of the first resistor, the size of the fourth resistor, the size of the first capacitor, the size of the first voltage regulator diode, etc., which are not limited here.

[0050] The first software environment parameter may include at least one of the following: network bandwidth, memory size, system version, cache size, etc., which are not limited here.

[0051] In a specific implementation, the first hardware environment parameter and the first software environment parameter of the through-hole lightning arrester can be obtained, and the mapping relationship between the preset hardware environment parameter and the adjustment parameter can be pre-stored. Then, the first adjustment parameter corresponding to the first hardware environment parameter can be determined based on the mapping relationship. The mapping relationship between the preset software environment parameter and the adjustment parameter can be pre-stored. Then, the second adjustment parameter corresponding to the first software environment parameter can be determined based on the mapping relationship, and then the lower limit parameter is adjusted according to the first adjustment parameter to obtain the target lower limit parameter, that is, the target lower limit parameter = (1 + first adjustment parameter) * lower limit parameter. Of course, the upper limit parameter can also be adjusted according to the second adjustment parameter to obtain the target upper limit parameter. Parameters, that is, target upper limit parameter = (1 + second adjustment parameter) * upper limit parameter, and then determine the first preset range according to the target lower limit parameter and the target upper limit parameter. In this way, firstly, the change trend range of the electrical signal corresponding to the actual environment can be obtained, thereby preliminarily improving the accuracy of lightning event detection. Secondly, the hardware environment parameters reflect the lightning detection accuracy to a certain extent, and the lower limit capability of the change trend range of the electrical signal can be adjusted based on the actual hardware environment parameters. Thirdly, the software environment parameters reflect the upper limit capability of lightning detection to a certain extent. Therefore, the upper limit capability of the change trend range of the electrical signal can be adjusted based on the actual software environment parameters, thereby deeply improving the accuracy of lightning event detection.

[0052] It can be seen that the through-hole lightning arrester described in the embodiment of the present application includes: a signal input module, a Roche coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Roche coil, the Roche coil is also connected to the processor through the lightning trigger signal detection circuit and the processor is connected to the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; wherein the signal input module is used to input a first electrical signal; the Roche coil is used to convert the first electrical signal into a second electrical signal; the lightning trigger signal detection circuit is used to detect whether the second electrical signal meets a preset condition; wherein when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that no lightning strike event has occurred; the environmental sensor is used to obtain target environmental parameters; the processor is used to determine a first signal processing parameter corresponding to the target environmental parameter; the lightning signal processing circuit is used to detect whether the second electrical signal meets a preset condition; When the preset conditions are met, the second electrical signal is processed by the first signal processing parameters to obtain a third electrical signal; the processor is also used to convert the third electrical signal into a digital signal, and determine the target state parameters of the lightning strike event according to the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations. In this way, firstly, since the lightning trigger signal detection circuit and the lightning signal processing circuit are connected in parallel between the Rogowski coil and the processor, and the response speed of the lightning trigger signal detection circuit is faster than that of the lightning signal processing circuit, the lightning trigger signal detection circuit can be used to quickly identify the lightning strike event. Secondly, after the lightning strike event is identified, the signal processing parameters suitable for the actual environment can be determined, and the signal processing parameters can be used based on the lightning signal processing circuit to accurately process the electrical signal. The signal processing accuracy is higher, which helps to improve the accurate identification of lightning strike signals, and do some screening to prevent false triggering, increase the product's anti-interference ability, and thus improve the intelligence of the lightning arrester.

[0053] See also Figure 6 , Figure 6 is a flow chart of a signal processing method provided by an embodiment of the present application, as shown in the figure, which is applied to Figure 1 The through-hole arrester shown in the figure, the signal processing method includes: 601. Input a first electrical signal.

[0054] 602. Convert the first electrical signal into a second electrical signal.

[0055] 603. Detect whether the second electrical signal satisfies a preset condition; wherein, when the second electrical signal satisfies the preset condition, determine that a lightning strike event has occurred; when the second electrical signal does not satisfy the preset condition, determine that the lightning strike event has not occurred.

[0056] 604. Obtain target environment parameters.

[0057] 605. Determine a first signal processing parameter corresponding to the target environment parameter.

[0058] 606. When the second electrical signal meets the preset condition, process the second electrical signal using the first signal processing parameter to obtain a third electrical signal.

[0059] 607. Convert the third electrical signal into a digital signal, and determine a target state parameter of the lightning strike event according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

[0060] The specific description of the above steps 601 to 607 can refer to the above Figure 1 The relevant contents of the described through-hole lightning arrester will not be repeated here.

[0061] Optionally, the above step 607, converting the third electrical signal into a digital signal, may include the following steps: dividing the third electrical signal into a fourth electrical signal corresponding to an audible sound frequency band and a fifth electrical signal corresponding to an inaudible sound frequency band; Determine a first frequency domain signal corresponding to the fourth electrical signal and a second frequency domain signal corresponding to the fifth electrical signal; Performing a first noise reduction process on the first frequency domain signal to obtain a reference first frequency domain signal; Performing a second noise reduction process on the second frequency domain signal to obtain a reference second frequency domain signal; Determine a first portion of digital signals corresponding to the reference first frequency domain signal, and determine a second portion of digital signals corresponding to the reference second frequency domain signal; The first part of the digital signal and the second part of the digital signal are concatenated to obtain the digital signal.

[0062] In a specific implementation, since the characteristics of signals in different frequency bands are different, the third electrical signal can be divided into a fourth electrical signal corresponding to the audible sound band and a fifth electrical signal corresponding to the inaudible sound band. Then, the first frequency domain signal corresponding to the fourth electrical signal and the second frequency domain signal corresponding to the fifth electrical signal can be determined. The first frequency domain signal can be subjected to a first noise reduction process to obtain a reference first frequency domain signal. The second frequency domain signal can be subjected to a second noise reduction process to obtain a reference second frequency domain signal. The first part of the digital signal corresponding to the reference first frequency domain signal can be determined. The second part of the digital signal corresponding to the reference second frequency domain signal can be determined. The first part of the digital signal and the second part of the digital signal can be spliced ​​according to the frequency of the signal itself to obtain a digital signal. Since the lightning signal processing circuit is mainly hardware filtering, and in the process of converting the third electrical signal into a digital signal, deep software filtering is performed. Therefore, the accuracy of lightning event detection can be deeply improved.

[0063] Optionally, the above step of performing a first noise reduction process on the first frequency domain signal to obtain a reference first frequency domain signal may include the following steps: Calculating a first energy value of the first frequency domain signal; Calculating a second energy value of the second time domain signal; Calculating a second relative deviation between the first energy value and the second energy value; Calculating a first signal-to-noise ratio of the first frequency domain signal; Calculating a second signal-to-noise ratio of the second frequency domain signal; Calculating a third relative deviation between the first signal-to-noise ratio and the second signal-to-noise ratio; calculating a third absolute value of a difference between the second relative deviation and the third relative deviation; determining a first noise reduction processing algorithm corresponding to the third absolute value; Acquire a first algorithm control parameter corresponding to the first signal-to-noise ratio; The first frequency domain signal is denoised according to the first denoising processing algorithm and the first algorithm control parameter to obtain the reference first frequency domain signal.

[0064] The second relative deviation can not only characterize the deviation size, but also characterize the deviation direction. The second relative deviation reflects the energy difference between the audible sound frequency band and the inaudible sound frequency band to a certain extent.

[0065] In a specific implementation, a first energy value of the first frequency domain signal, that is, an energy value corresponding to the audible sound frequency band, may be calculated, and then a second energy value of the second time domain signal, that is, an energy value corresponding to the inaudible sound frequency band, may be calculated. Next, a second relative deviation between the first energy value and the second energy value may be calculated, where the second relative deviation = (first energy value - second energy value) / (first energy value + second energy value).

[0066] Next, a first signal-to-noise ratio of the first frequency domain signal and a second signal-to-noise ratio of the second frequency domain signal may be calculated to determine a third relative deviation between the first signal-to-noise ratio and the second signal-to-noise ratio, where the second relative deviation=(first signal-to-noise ratio-second signal-to-noise ratio) / (first signal-to-noise ratio+second signal-to-noise ratio).

[0067] Further, a third absolute value of the difference between the second relative deviation and the third relative deviation can be determined, where the third absolute value=|second relative deviation-third relative deviation|. The third absolute value reflects, to a certain extent, the degree of difference in signal characteristics between the audible sound frequency band and the inaudible sound frequency band.

[0068] Furthermore, a mapping relationship between a preset absolute value and a noise reduction processing algorithm can be pre-stored, and a first noise reduction processing algorithm corresponding to the third absolute value can be determined based on the mapping relationship. A mapping relationship between a preset signal-to-noise ratio and an algorithm control parameter of the first noise reduction processing algorithm can also be pre-stored, and further, a first algorithm control corresponding to the first signal-to-noise ratio can be determined based on the mapping relationship. In this way, the noise reduction processing effect can be guaranteed, and over-noise reduction and under-noise reduction can be prevented. The algorithm control parameter is used for at least one of the following functions: noise reduction processing effect, noise reduction processing speed, etc., which are not limited here.

[0069] Next, the first frequency domain signal can be denoised according to the first noise reduction processing algorithm and the first algorithm control parameters to obtain a reference first frequency domain signal. In this way, on the one hand, the audible sound frequency band and the inaudible sound frequency band are associated with each other based on the signal quality difference between the audible sound frequency band and the inaudible sound frequency band, and the signal quality difference between the audible sound frequency band and the inaudible sound frequency band. Not only the individuality of the two but also the correlation between the two are considered, but also the corresponding noise reduction processing algorithm is determined based on the signal characteristic difference, so that the noise reduction processing effect is consistent with both the individuality of the two and the correlation between the two. On the other hand, the algorithm control parameters of the appropriate noise reduction processing algorithm can be adapted based on the signal-to-noise ratio, so that the final noise reduction effect depth is consistent with the actual signal quality, which can prevent both over-noise reduction and under-noise.

[0070] Optionally, the above step of performing a second noise reduction process on the second frequency domain signal to obtain a reference second frequency domain signal may include the following steps: determining a first ratio between the first signal-to-noise ratio and the first energy value; determining a second ratio between the second signal-to-noise ratio and the second energy value; determining a fourth relative deviation between the first ratio and the second ratio; determining a first feedback adjustment parameter corresponding to the fourth relative deviation; Performing feedback adjustment on the first algorithm control parameter according to the first feedback adjustment parameter to obtain a second algorithm control parameter; The second frequency domain signal is denoised according to the first denoising processing algorithm and the second algorithm control parameter to obtain the reference second frequency domain signal.

[0071] In the embodiment of the present application, a first ratio between the first signal-to-noise ratio and the first energy value can be determined, that is, the first ratio=first signal-to-noise ratio / first energy value, a second ratio between the second signal-to-noise ratio and the second energy value can be determined, the second ratio=second signal-to-noise ratio / second energy value, and then a fourth relative deviation between the first ratio and the second ratio can be determined, the fourth relative deviation=(first ratio-second ratio) / (first ratio+second ratio), and a mapping relationship between a preset relative deviation and a feedback adjustment parameter can be pre-stored, and then, based on the mapping relationship, a first feedback adjustment parameter corresponding to the fourth relative deviation can be determined, and then the first algorithm control parameter can be feedback-adjusted according to the first feedback adjustment parameter to obtain a second algorithm control parameter, that is, the second algorithm control parameter=(1+first feedback adjustment parameter) / ( ... Adjustment parameters) * first algorithm control parameters, and then the second frequency domain signal is denoised according to the first noise reduction processing algorithm and the second algorithm control parameters to obtain a reference second frequency domain signal. The first ratio reflects the signal quality cost performance of the audible sound band, and the second ratio reflects the signal quality cost performance of the unaudible sound band. The fourth relative deviation not only reflects the deviation size, but also reflects the deviation direction. The fourth relative deviation reflects the signal quality difference between the audible sound band and the inaudible sound band to a certain extent. The degree of difference in signal characteristics, considering the individuality of the two and the correlation between the two, makes the noise reduction processing effect conform to the individuality of the two and the correlation between the two, so that the final noise reduction effect depth conforms to the actual signal quality, which can prevent both over-noise reduction and under-noise reduction.

[0072] in, Figure 1 The through-hole lightning arrester shown can implement any of the above methods, which will not be described in detail here.

[0073] It can be seen that the signal processing method described in the embodiment of the present application is applied to a through-hole lightning arrester, which includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; input a first electrical signal; convert the first electrical signal into a second electrical signal; detect whether the second electrical signal meets a preset condition; when the second electrical signal meets the preset condition, determine that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, determine that no lightning strike event has occurred; obtain target environmental parameters; determine a first signal processing parameter corresponding to the target environmental parameter; when the second electrical signal meets the preset condition, the first signal processing parameter is used to process the second electrical signal. The second electrical signal is processed to obtain a third electrical signal; the third electrical signal is converted into a digital signal, and the target state parameters of the lightning strike event are determined according to the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations. In this way, firstly, since the lightning trigger signal detection circuit and the lightning signal processing circuit are connected in parallel between the Rogowski coil and the processor, and the response speed of the lightning trigger signal detection circuit is faster than that of the lightning signal processing circuit, the lightning trigger signal detection circuit can be used to quickly identify the lightning strike event. Secondly, after the lightning strike event is identified, the signal processing parameters suitable for the actual environment can be determined, and the signal processing parameters can be used based on the lightning signal processing circuit to accurately process the electrical signal. The signal processing accuracy is higher, which helps to improve the accurate identification of lightning strike signals, and do some screening to prevent false triggering, increase the product's anti-interference ability, and then improve the intelligence of the lightning arrester.

[0074] In accordance with the above embodiment, please refer to Figure 7 , Figure 7 It is a structural schematic diagram of another through-hole lightning arrester provided in an embodiment of the present application. As shown in the figure, the through-hole lightning arrester includes a processor, a memory, a communication interface and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the processor. In the embodiment of the present application, the through-hole lightning arrester also includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; the program includes instructions for performing the following steps: inputting a first electrical signal; converting the first electrical signal into a second electrical signal; Detecting whether the second electrical signal satisfies a preset condition; wherein, when the second electrical signal satisfies the preset condition, determining that a lightning strike event has occurred; and when the second electrical signal does not satisfy the preset condition, determining that the lightning strike event has not occurred; Get target environment parameters; determining a first signal processing parameter corresponding to the target environmental parameter; When the second electrical signal meets the preset condition, processing the second electrical signal by using the first signal processing parameter to obtain a third electrical signal; The third electrical signal is converted into a digital signal, and a target state parameter of the lightning strike event is determined according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

[0075] Optionally, in terms of converting the third electrical signal into a digital signal, the program includes instructions for executing the following steps: dividing the third electrical signal into a fourth electrical signal corresponding to an audible sound frequency band and a fifth electrical signal corresponding to an inaudible sound frequency band; Determine a first frequency domain signal corresponding to the fourth electrical signal and a second frequency domain signal corresponding to the fifth electrical signal; Performing a first noise reduction process on the first frequency domain signal to obtain a reference first frequency domain signal; Performing a second noise reduction process on the second frequency domain signal to obtain a reference second frequency domain signal; Determine a first portion of digital signals corresponding to the reference first frequency domain signal, and determine a second portion of digital signals corresponding to the reference second frequency domain signal; The first part of the digital signal and the second part of the digital signal are concatenated to obtain the digital signal.

[0076] It can be seen that the through-hole lightning arrester described in the embodiment of the present application includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; input a first electrical signal; convert the first electrical signal into a second electrical signal; detect whether the second electrical signal meets a preset condition; when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that no lightning strike event has occurred; obtain target environmental parameters; determine a first signal processing parameter corresponding to the target environmental parameter; when the second electrical signal meets the preset condition, the second electrical signal is processed by the first signal processing parameter. Processing is performed to obtain a third electrical signal; the third electrical signal is converted into a digital signal, and the target state parameters of the lightning strike event are determined according to the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations. In this way, firstly, since the lightning trigger signal detection circuit and the lightning signal processing circuit are connected in parallel between the Rogowski coil and the processor, and the response speed of the lightning trigger signal detection circuit is faster than that of the lightning signal processing circuit, the lightning trigger signal detection circuit can be used to quickly identify the lightning strike event. Secondly, after the lightning strike event is identified, the signal processing parameters suitable for the actual environment can be determined, and the signal processing parameters can be used based on the lightning signal processing circuit to accurately process the electrical signal. The signal processing accuracy is higher, which helps to improve the accurate identification of lightning strike signals, and do some screening to prevent false triggering, increase the product's anti-interference ability, and then improve the intelligence of the lightning arrester.

[0077] Figure 8 is a functional unit block diagram of a signal processing device 800 involved in an embodiment of the present application. The signal processing device 800 is applied to Figure 1 The through-hole arrester shown, the signal processing device 800 includes: an input unit 801, a conversion unit 802, a detection unit 803, an acquisition unit 804, a determination unit 805 and a processing unit 806, wherein, The input unit 801 is used to input a first electrical signal; The conversion unit 802 is used to convert the first electrical signal into a second electrical signal; The detection unit 803 is used to detect whether the second electrical signal meets a preset condition; wherein, when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that the lightning strike event has not occurred; The acquisition unit 804 is used to acquire target environment parameters; The determining unit 805 is used to determine a first signal processing parameter corresponding to the target environment parameter; The processing unit 806 is used to process the second electrical signal through the first signal processing parameter to obtain a third electrical signal when the second electrical signal meets the preset condition; and convert the third electrical signal into a digital signal, and determine the target state parameters of the lightning strike event based on the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations.

[0078] Optionally, in converting the third electrical signal into a digital signal, the processing unit 806 is specifically configured to: dividing the third electrical signal into a fourth electrical signal corresponding to an audible sound frequency band and a fifth electrical signal corresponding to an inaudible sound frequency band; Determine a first frequency domain signal corresponding to the fourth electrical signal and a second frequency domain signal corresponding to the fifth electrical signal; Performing a first noise reduction process on the first frequency domain signal to obtain a reference first frequency domain signal; Performing a second noise reduction process on the second frequency domain signal to obtain a reference second frequency domain signal; Determine a first portion of digital signals corresponding to the reference first frequency domain signal, and determine a second portion of digital signals corresponding to the reference second frequency domain signal; The first part of the digital signal and the second part of the digital signal are concatenated to obtain the digital signal.

[0079] It can be seen that the signal processing device described in the embodiment of the present application is applied to a through-hole lightning arrester, which includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor through the lightning trigger signal detection circuit and the processor through the lightning signal processing circuit, and the processor is also connected to the environmental sensor; input a first electrical signal; convert the first electrical signal into a second electrical signal; detect whether the second electrical signal meets a preset condition; when the second electrical signal meets the preset condition, determine that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, determine that no lightning strike event has occurred; obtain target environmental parameters; determine a first signal processing parameter corresponding to the target environmental parameter; when the second electrical signal meets the preset condition, the first signal processing parameter is used to process the first electrical signal. The second electrical signal is processed to obtain a third electrical signal; the third electrical signal is converted into a digital signal, and the target state parameters of the lightning strike event are determined according to the digital signal, and the target state parameters are used to instruct the through-hole lightning arrester to perform corresponding protection operations. In this way, firstly, since the lightning trigger signal detection circuit and the lightning signal processing circuit are connected in parallel between the Rogowski coil and the processor, and the response speed of the lightning trigger signal detection circuit is faster than that of the lightning signal processing circuit, the lightning trigger signal detection circuit can be used to quickly identify the lightning strike event. Secondly, after the lightning strike event is identified, the signal processing parameters suitable for the actual environment can be determined, and the signal processing parameters can be used based on the lightning signal processing circuit to accurately process the electrical signal. The signal processing accuracy is higher, which helps to improve the accurate identification of lightning strike signals, and do some screening to prevent false triggering, increase the product's anti-interference ability, and then improve the intelligence of the lightning arrester.

[0080] It can be understood that the functions of each program module of the signal processing device of this embodiment can be specifically implemented according to the method in the above method embodiment. The specific implementation process can refer to the relevant description of the above method embodiment, which will not be repeated here.

[0081] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps of any method recorded in the above method embodiment, and the above computer includes a through-hole lightning arrester.

[0082] The embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium storing a computer program, the computer program is operable to cause a computer to execute some or all of the steps of any method described in the method embodiment. The computer program product can be a software installation package, and the computer includes a through-hole lightning arrester.

[0083] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0084] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0085] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, 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, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0086] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0087] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0088] If the above-mentioned 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 memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the above-mentioned methods in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0089] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable memory, which may include a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0090] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A through-hole arrester, characterized in that: The through-hole lightning arrester includes: a signal input module, a Rogowski coil, a lightning trigger signal detection circuit, a lightning signal processing circuit, a processor and an environmental sensor, wherein the signal input module is connected to the Rogowski coil, the Rogowski coil is also connected to the processor via the lightning trigger signal detection circuit and the lightning signal processing circuit, and the processor is also connected to the environmental sensor; wherein, The signal input module is used to input a first electrical signal; The Rogowski coil is used to convert the first electrical signal into a second electrical signal; The lightning strike trigger signal detection circuit is used to detect whether the second electrical signal meets a preset condition; wherein, when the second electrical signal meets the preset condition, it is determined that a lightning strike event has occurred; when the second electrical signal does not meet the preset condition, it is determined that the lightning strike event has not occurred; The environmental sensor is used to obtain target environmental parameters; The processor is configured to determine a first signal processing parameter corresponding to the target environmental parameter; The lightning signal processing circuit is used for processing the second electrical signal by using the first signal processing parameter to obtain a third electrical signal when the second electrical signal meets the preset condition; The processor is further used to convert the third electrical signal into a digital signal, and determine a target state parameter of the lightning strike event according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

2. The through-hole arrester according to claim 1, characterized in that: The lightning trigger signal detection circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first amplifier, a first capacitor, and a first voltage stabilizing diode; wherein, The first input end and the second input end of the lightning trigger signal detection circuit are connected to the Rogowski coil, the first input end is connected to the inverting input end of the first amplifier through the first resistor, and the first input end is also connected to the output end of the lightning trigger signal detection circuit through the first resistor and the fourth resistor; the output end is connected to the processor; The second input end of the lightning trigger signal detection circuit is connected to the first reference voltage through the second resistor and the third resistor, and the second input end is connected to the non-inverting input end of the first amplifier through the second resistor; one power supply pin of the first amplifier is grounded, and the other power supply pin is connected to the first power supply and grounded through the first capacitor; The output end of the first amplifier is connected to the output end of the lightning trigger signal detection circuit, and the output end of the first amplifier is grounded through the first voltage regulator diode.

3. The through-hole arrester according to claim 2, characterized in that: The lightning signal processing circuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second amplifier, a second capacitor, a third capacitor, and a second voltage-stabilizing diode; wherein, The first port and the second port of the lightning signal processing circuit are connected to the Rogowski coil, the first port is connected to the inverting input terminal of the second amplifier through the fifth resistor, the first port is also connected to the third port of the lightning signal processing circuit through the fifth resistor and the eighth resistor, the first port is also connected to the third port of the lightning signal processing circuit through the fifth resistor and the third capacitor; the third port is connected to the processor; The second port of the lightning signal processing circuit is connected to the second reference voltage through the sixth resistor and the seventh resistor, and the second port is connected to the non-inverting input terminal of the second amplifier through the sixth resistor; one power supply pin of the second amplifier is grounded, and the other power supply pin is connected to the second power supply and grounded through the second capacitor; The output end of the second amplifier is connected to the third port of the lightning signal processing circuit, and the output end of the second amplifier is grounded through the second voltage regulator diode.

4. The through-hole arrester according to claim 3, characterized in that: The second electrical signal is an electrical signal within a period of time; in terms of detecting whether the second electrical signal meets a preset condition, the lightning trigger signal detection circuit is specifically used to: Perform fitting according to the second electrical signal to obtain a first fitting straight line and a fitting curve segment within the period of time; determining a first slope of the first fitted straight line; Determine the maximum point and the minimum point of the fitting curve segment to obtain multiple maximum points and multiple minimum points; Determine a first standard deviation according to the plurality of maximum value points and the plurality of minimum value points; Performing fitting according to the multiple maximum value points to obtain a second fitting straight line, obtaining an absolute value of a second slope of the second fitting straight line, and obtaining a first absolute value; Perform fitting according to the multiple minimum value points to obtain a third fitting straight line, obtain the absolute value of the third slope of the third fitting straight line, and obtain a second absolute value; determining a first relative deviation between the first absolute value and the second absolute value; Determine an optimization factor corresponding to the first relative deviation to obtain a first optimization factor; Optimizing the first standard deviation according to the first optimization factor to obtain a second standard deviation; Whether the second electrical signal meets the preset condition is detected according to the first slope and the second standard deviation.

5. The through-hole arrester according to any one of claims 1 to 4, characterized in that: In terms of detecting whether the second electrical signal meets the preset condition according to the first slope and the second standard deviation, the lightning trigger signal detection circuit is specifically used for: When the first slope is within a first preset range and the second standard deviation is within a second preset range, determining that the second electrical signal satisfies the preset condition; When the first slope is not within the first preset range, and, or, the second standard deviation is not within the second preset range, it is determined that the second electrical signal does not satisfy the preset condition.

6. The through-hole arrester according to claim 5, characterized in that: The method further comprises: Acquire a reference preset range corresponding to the target environmental parameter, the reference preset range comprising an upper limit parameter and a lower limit parameter; Obtaining a first hardware environment parameter and a first software environment parameter of the through-hole lightning arrester; Determining a first adjustment parameter corresponding to the first hardware environment parameter; Determining a second adjustment parameter corresponding to the first software environment parameter; Adjust the lower limit parameter according to the first adjustment parameter to obtain a target lower limit parameter; Adjust the upper limit parameter according to the second adjustment parameter to obtain a target upper limit parameter; The first preset range is determined according to the target lower limit parameter and the target upper limit parameter.

7. A signal processing method, characterized in that: Applied to the through-hole arrester according to any one of claims 1 to 6, the method comprises: inputting a first electrical signal; converting the first electrical signal into a second electrical signal; Detecting whether the second electrical signal satisfies a preset condition; wherein, when the second electrical signal satisfies the preset condition, determining that a lightning strike event has occurred; and when the second electrical signal does not satisfy the preset condition, determining that the lightning strike event has not occurred; Get target environment parameters; determining a first signal processing parameter corresponding to the target environmental parameter; When the second electrical signal meets the preset condition, processing the second electrical signal by using the first signal processing parameter to obtain a third electrical signal; The third electrical signal is converted into a digital signal, and a target state parameter of the lightning strike event is determined according to the digital signal, wherein the target state parameter is used to instruct the through-hole lightning arrester to perform a corresponding protection operation.

8. The method according to claim 7, characterized in that The converting the third electrical signal into a digital signal comprises: dividing the third electrical signal into a fourth electrical signal corresponding to an audible sound frequency band and a fifth electrical signal corresponding to an inaudible sound frequency band; Determine a first frequency domain signal corresponding to the fourth electrical signal and a second frequency domain signal corresponding to the fifth electrical signal; Performing a first noise reduction process on the first frequency domain signal to obtain a reference first frequency domain signal; Performing a second noise reduction process on the second frequency domain signal to obtain a reference second frequency domain signal; Determine a first portion of digital signals corresponding to the reference first frequency domain signal, and determine a second portion of digital signals corresponding to the reference second frequency domain signal; The first part of the digital signal and the second part of the digital signal are concatenated to obtain the digital signal.

9. A through-hole arrester, characterized in that: The method comprises a processor and a memory, wherein the memory is used to store one or more programs and is configured to be executed by the processor, wherein the programs include instructions for executing the steps in the method according to claim 7 or 8.

10. A computer-readable storage medium, characterized in that: A computer program for electronic data exchange is stored, wherein the computer program causes a computer to execute the method according to claim 7 or 8.

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