CN116359597B

CN116359597B - Method and device for measuring lightning parameters by medium-voltage switch

Info

Publication number: CN116359597B
Application number: CN202310080480.6A
Authority: CN
Inventors: 周迭辉; 郭峰; 吕霞; 方志明; 肖化飞
Original assignee: Zhuhai Powint Electric Co ltd
Current assignee: Zhuhai Powint Electric Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2024-04-16
Anticipated expiration: 2043-02-01
Also published as: CN116359597A

Abstract

The application relates to the technical field of lightning stroke prevention, and discloses a method and a device for measuring lightning parameters by using a medium-voltage switch, wherein the method for measuring the lightning parameters by using the medium-voltage switch comprises the following steps: acquiring lightning parameters in real time, wherein the lightning parameters comprise voltage parameters and current parameters; comparing the voltage parameter with a preset lightning voltage threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning voltage data; comparing the current parameter with a preset lightning current threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning current data; generating lightning stroke data based on the lightning voltage data and the lightning flow data and sending the lightning stroke data to a distribution switch monitoring terminal, wherein the lightning stroke data comprises a lightning waveform chart, lightning stroke position information and lightning stroke frequency information; the lightning stroke early warning method has the effect of being convenient for early warning of the lightning stroke event by measuring the lightning parameters.

Description

Method and device for measuring lightning parameters by medium-voltage switch

Technical Field

The application relates to the technical field of lightning stroke prevention, in particular to a method and a device for measuring lightning parameters by using a medium-voltage switch.

Background

The medium-voltage switch has wide application range and is commonly provided with a distribution switch monitoring terminal. The use of medium voltage switches has three applications: 1. measuring line voltage and current and zero sequence voltage and current; 2. protection and control; 3. and (5) communication.

In addition, after the medium voltage switch is installed, in order to prevent lightning damage, a lightning arrester is usually installed at a nearby position; however, the existing medium-voltage switch can only passively measure lightning parameters after lightning strike occurs, and early warning can not be performed through lightning voltage information before lightning strike occurs.

As is apparent from the above related art, the conventional medium voltage switch has a problem that it is difficult to perform early warning of a lightning event.

Disclosure of Invention

In order to facilitate early warning of lightning event by measuring lightning parameters, the application provides a method and a device for measuring lightning parameters by using a medium-voltage switch.

The first technical scheme adopted by the application is as follows:

a method of measuring lightning parameters with a medium voltage switch comprising:

acquiring lightning parameters in real time, wherein the lightning parameters comprise voltage parameters and current parameters;

Comparing the voltage parameter with a preset lightning voltage threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning voltage data;

Comparing the current parameter with a preset lightning current threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning current data;

And generating lightning stroke data based on the lightning pressure data and the lightning flow data and sending the lightning stroke data to a distribution switch monitoring terminal, wherein the lightning stroke data comprises a lightning waveform chart, lightning stroke position information and lightning stroke frequency information.

By adopting the technical scheme, the lightning parameters are obtained in real time, wherein the lightning parameters comprise the voltage parameters and the current parameters, so that the condition that the cable to be tested is influenced by direct or indirect lightning stroke can be conveniently judged according to the lightning parameters; comparing the voltage parameter with a preset lightning stroke voltage threshold value, and comparing the current parameter with a preset lightning stroke current threshold value so as to generate corresponding warning information according to the comparison result of the voltage parameter and the current parameter, thereby being convenient for prompting corresponding staff to take corresponding countermeasures; analyzing based on the detected voltage parameters to generate lightning voltage data, analyzing based on the detected current parameters to generate lightning current data, and summarizing the lightning voltage data and the lightning current data to generate lightning stroke data, wherein the lightning stroke data comprises information such as a waveform diagram of voltage and current generated by the cable to be tested under the influence of lightning stroke, the position of the detected lightning stroke, the number of times of the lightning stroke and the like; and the lightning stroke data are sent to the distribution switch monitoring terminal, so that corresponding lightning protection measures can be conveniently adopted according to the condition that the cable to be tested is influenced by lightning stroke, and the effect of early warning the lightning stroke event is achieved.

The present application is in a preferred example: generating a lightning voltage processing signal when a lightning strike is detected; comparing the voltage parameter with a preset lightning voltage threshold value, and generating corresponding warning information and acquiring lightning voltage data based on a comparison result, wherein the step of acquiring the lightning voltage data comprises the following steps:

Detecting lightning voltage processing signals in real time, comparing voltage parameters with lightning voltage threshold values if the lightning voltage processing signals are not received, generating the lightning voltage processing signals and sending alarm signals to a distribution switch monitoring terminal if the voltage parameters are larger than the lightning voltage threshold values;

If the lightning voltage processing signal is received, comparing the voltage parameter with a lightning stroke voltage threshold value, if the voltage parameter is larger than the lightning stroke voltage threshold value, recording lightning voltage waveform information, evaluating lightning stroke position information, generating lightning voltage data, and if the voltage parameter is smaller than the lightning stroke voltage threshold value, clearing the lightning voltage processing signal.

By adopting the technical scheme, the influence of lightning stroke on the cable comprises direct lightning stroke and induction lightning stroke, and when the lightning stroke is detected, a lightning voltage processing signal is generated; detecting whether lightning voltage processing signals exist in real time, if the lightning voltage processing signals are not received, judging that no lightning stroke is detected currently, comparing the voltage parameters measured on the current cable with preset lightning stroke voltage thresholds, when the voltage parameters are larger than the lightning stroke voltage thresholds, judging that the lightning stroke is detected, generating the lightning voltage processing signals, and sending alarm signals to the power distribution switch monitoring terminal so as to enable the power distribution switch monitoring terminal to execute corresponding lightning protection measures; when a lightning voltage processing signal is received, continuously comparing the voltage parameter with a lightning voltage threshold value, if the voltage parameter is larger than the lightning voltage threshold value, recording lightning voltage waveform information according to the detected voltage parameter, evaluating the position range where lightning strike occurs, and generating lightning position information so as to generate lightning voltage data; when the voltage parameter is detected to be smaller than the lightning voltage threshold value, the influence of the lightning strike on the cable is considered to be eliminated temporarily, the lightning voltage processing signal is eliminated, and the computer resources and the storage space occupied by continuously acquiring and storing the lightning voltage data are reduced.

The present application is in a preferred example: generating a lightning current processing signal when a lightning strike is detected; comparing the current parameter with a preset lightning current threshold value, and generating corresponding warning information and acquiring lightning current data based on a comparison result, wherein the step of obtaining the lightning current data comprises the following steps:

Detecting lightning current processing signals in real time, and if the lightning current processing signals are received, recording lightning current waveform information, evaluating lightning stroke position information and lightning stroke frequency information, and generating lightning current data;

if the lightning current processing signal is not received, comparing the current parameter with a lightning current threshold value, if the current parameter is larger than the lightning current threshold value, generating the lightning current processing signal, updating lightning stroke frequency information, recording lightning current waveform information, evaluating lightning stroke position information, and generating lightning current data;

if the current parameter is smaller than the lightning current threshold, evaluating the lightning current maximum value, generating lightning current data based on the lightning stroke frequency information, the lightning stroke position information and the lightning current maximum value, and eliminating a lightning current processing signal.

By adopting the technical scheme, when lightning stroke is detected, a lightning current processing signal is generated; detecting whether lightning current processing signals exist in real time, if the lightning current processing signals are received, considering that lightning current is currently detected, recording lightning current waveform information, evaluating the position range of the lightning current to generate lightning current position information, and recording the occurrence times of the lightning current to generate lightning current data; if the lightning current processing signal is not received, continuously comparing the acquired current parameter with a lightning current threshold value so as to continuously detect a lightning event, when the current parameter is detected to be larger than the lightning current threshold value, detecting the lightning event, generating the lightning current processing signal so as to execute the steps of recording lightning current waveform information, evaluating the position range where the lightning stroke occurs to generate lightning stroke position information, and recording the occurrence times of the lightning stroke so as to generate lightning current data; when the current parameter is detected to be smaller than the lightning current threshold value, the lightning event is considered to be ended, the lightning current maximum value is evaluated, lightning current data of the last lightning event is generated after the lightning frequency information, the lightning position information and the lightning current maximum value are summarized, lightning current processing signals are removed, and computer resources and storage space occupied by continuously acquiring and storing the lightning current data are reduced.

The present application is in a preferred example: the step of generating lightning stroke data based on the lightning pressure data and the lightning flow data and sending the lightning stroke data to the distribution switch monitoring terminal comprises the following steps:

Inputting each piece of lightning stroke data into a lightning stroke statistical analysis model, and determining lightning stroke influence information of each cable to be tested based on the lightning stroke data corresponding to different distribution switch monitoring terminals, wherein the lightning stroke influence information comprises lightning stroke probability information, lightning stroke intensity information and cable on-off information;

Acquiring a circuit layout diagram, and determining power supply areas corresponding to the cables to be tested according to the circuit layout diagram;

Based on the lightning stroke influence information, corresponding lightning stroke response information is generated and sent to the user terminal in the corresponding power supply area.

By adopting the technical scheme, each lightning stroke data is input into the accumulated statistical analysis model so as to evaluate the influence of lightning strokes on each cable to be tested according to the lightning stroke data detected by different power distribution switch monitoring terminals, wherein the influence comprises lightning stroke probability information, lightning stroke intensity information and cable on-off information, and lightning stroke influence information is further generated; acquiring a circuit layout diagram so as to determine power supply areas corresponding to the cables to be tested according to the circuit layout diagram, and facilitating subsequent evaluation of affected areas of lightning stroke events; based on the lightning stroke influence information, corresponding lightning stroke response information is generated and sent to the user terminal of the corresponding power supply area, so that measures required by a user for responding to the lightning stroke event are conveniently informed, and the possible loss of the lightning stroke event to the user is reduced.

The present application is in a preferred example: after the step of generating lightning stroke data based on the lightning voltage data and the lightning flow data and transmitting the lightning stroke data to the distribution switch monitoring terminal, the method comprises the following steps:

Inputting each lightning stroke data to a lightning stroke statistical analysis module to generate historical lightning stroke information of each circuit device;

Acquiring model information of each circuit device, and acquiring parameter information of corresponding circuit devices based on the model information;

And establishing a corresponding equipment state model based on the parameter information of each circuit equipment, inputting historical lightning stroke information into the corresponding equipment state model, generating equipment state information, and generating an equipment inspection plan based on each piece of equipment state information.

By adopting the technical scheme, the lightning stroke data are input into the lightning stroke statistical analysis module, so that the accumulated influence condition of the lightning stroke event of each circuit device is evaluated, and the historical lightning stroke information of each circuit device is generated; the model information of each circuit device is acquired, so that parameter information of the corresponding circuit device is determined conveniently according to the model information, and the bearing capacity of each circuit device to lightning stroke is acquired; based on the parameter information of each circuit device, a corresponding device state model is established, historical lightning stroke information is input to the corresponding device state model, ageing and damage conditions of each circuit device under the influence of lightning stroke events received by the history are conveniently evaluated, device state information is further generated, ageing and damage conditions of each circuit device at present are conveniently known, a device inspection plan is generated based on the device state information of each circuit device, the device inspection plan is formulated according to the historical lightning stroke conditions of each circuit device, and therefore maintenance and inspection frequency is conveniently improved for circuit devices with serious ageing and damage conditions, and safety of the circuit devices is further improved.

The present application is in a preferred example: the step of acquiring the lightning parameters in real time comprises the following steps:

Acquiring voltage data detected by a voltage sensor, and performing operational amplification on the voltage data;

filtering the power frequency voltage fundamental wave from the voltage data after the operational amplification treatment;

the voltage data is processed by a voltage converter, and voltage parameters are generated and sent to an analog-to-digital converter.

By adopting the technical scheme, the voltage data is subjected to operational amplification processing by the voltage data of the voltage sensor detection cable, so that the accuracy of the voltage change condition in the cable is improved; the voltage data after the operational amplification treatment is filtered to remove the power frequency voltage fundamental wave, so that the interference caused by the power transmitted in the cable to the evaluation of the lightning stroke influence is reduced; and inputting the voltage data with the power frequency voltage base filtered into a voltage converter for processing, generating voltage parameters based on the converted voltage data, and sending the voltage parameters to an analog-to-digital converter so as to convert analog signals into digital signals for subsequent further analysis on the voltage change of the cable caused by lightning stroke.

Acquiring current data detected by a current sensor, and performing operational amplification on the current data;

filtering the power frequency current fundamental wave from the current data after the operational amplification treatment;

the current data is processed by a current transformer to generate current parameters which are sent to an analog-to-digital converter.

By adopting the technical scheme, the current data of the cable is detected by the current sensor, and the current data is subjected to operational amplification processing, so that the accuracy of the subsequent analysis of the change condition of the current in the cable is improved; filtering the current data subjected to operational amplification to remove a power frequency current fundamental wave, thereby reducing interference caused by power transmitted in a cable to evaluate lightning stroke influence; and inputting the current data with the power frequency current basis filtered into a current converter for processing, generating current parameters based on the converted current data and sending the current parameters to an analog-to-digital converter so as to convert analog signals into digital signals for subsequent further analysis on the current change of the cable caused by lightning stroke.

The second object of the application is realized by the following technical scheme:

The device for measuring the lightning parameters by using the medium-voltage switch comprises a power distribution switch monitoring terminal, a data processing module, a voltage parameter detection module and a current parameter detection module, wherein the power distribution switch monitoring terminal is electrically connected with a wireless communication module, the power distribution switch monitoring terminal is electrically connected with the data processing module, the data processing module is provided with an analog-to-digital converter and a controller for executing any method for measuring the lightning parameters by using the medium-voltage switch, the analog-to-digital converter is electrically connected with the voltage parameter detection module and the current parameter detection module, and the voltage parameter detection module and the current parameter detection module are electrically connected with a cable to be tested.

By adopting the technical scheme, the device for measuring the lightning parameters by using the medium-voltage switch comprises a power distribution switch monitoring terminal, a data processing module, a voltage parameter detection module and a current parameter detection module; the power distribution switch monitoring terminal is used for controlling the on-off of each cable so as to ensure the line safety, is connected with a wireless communication module, and is convenient to establish communication with a terminal operated by a remote cable maintainer so as to transmit detection data to the maintainer terminal and receive a control instruction; the power distribution switch monitoring terminal is electrically connected with the data processing module, wherein the data processing module comprises an analog-to-digital converter and a controller, the controller is used for executing the method for measuring the lightning parameters by the medium-voltage switch so as to control the device for measuring the lightning parameters by the medium-voltage switch, and the analog-to-digital converter is connected with the voltage parameter detection module and the current parameter detection module and is used for converting analog signal data detected by the voltage parameter detection module and the current parameter detection module into digital signal data; the voltage parameter detection module and the current parameter detection module are electrically connected to the cable to be detected, so that the voltage parameter and the current parameter can be conveniently monitored and detected from the cable to be detected.

The present application is in a preferred example: the voltage parameter detection module comprises a voltage sensor, the voltage sensor is electrically connected to a cable to be detected, the voltage sensor is electrically connected with a voltage follower, the voltage follower is electrically connected with an isolation operational amplifier, the isolation operational amplifier is electrically connected with a trap, the trap is electrically connected with a voltage converter, and the voltage converter is electrically connected to an analog-to-digital converter.

By adopting the technical scheme, the voltage parameter detection module comprises a voltage sensor, a voltage follower, an isolation operational amplifier, a trap and a voltage converter, wherein the voltage sensor, the voltage follower, the isolation operational amplifier, the trap and the voltage converter are electrically connected to the cable to be detected, and the voltage converter is electrically connected to the analog-to-digital converter; the voltage sensor is used for detecting voltage data of the cable to be tested, and the detected voltage data is input to the isolation operational amplifier through the voltage follower so as to isolate and amplify the voltage data, so that the accuracy of subsequent analysis on the voltage change is improved; inputting the voltage data after the operational amplification into a wave trap to filter out the fundamental wave of the power frequency voltage; and the voltage data with the voltage base filtered is subjected to electric quantity conversion and isolation by the voltage converter and then is input into the analog-to-digital converter so as to be subsequently converted into a digital signal for further analysis and processing.

The present application is in a preferred example: the current parameter detection module comprises a current sensor, the current sensor is electrically connected to a cable to be detected, the current sensor is electrically connected with a current follower, the current follower is electrically connected with an isolation operational amplifier, the isolation operational amplifier is electrically connected with a trap, and the trap is electrically connected to an analog-to-digital converter.

By adopting the technical scheme, the current parameter detection module comprises a current sensor, a current follower, an isolation operational amplifier and a trap, wherein the current sensor, the current follower, the isolation operational amplifier and the trap are electrically connected with a cable to be tested, and the current converter is electrically connected with the analog-to-digital converter; the current sensor is used for detecting current data of the cable to be tested, and the detected current data is input into the isolation operational amplifier through the current follower so as to isolate and amplify the current data, thereby improving the accuracy of subsequent analysis on current change; inputting the current data after the operational amplification into a wave trap to filter out a power frequency current fundamental wave; the current data with the current base filtered is input to an analog-to-digital converter so as to be subsequently converted into a digital signal and then subjected to further analysis processing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Acquiring lightning parameters in real time, wherein the lightning parameters comprise voltage parameters and current parameters, so that the condition that the cable to be tested is influenced by direct or indirect lightning stroke can be conveniently judged according to the lightning parameters; comparing the voltage parameter with a preset lightning stroke voltage threshold value, and comparing the current parameter with a preset lightning stroke current threshold value so as to generate corresponding warning information according to the comparison result of the voltage parameter and the current parameter, thereby being convenient for prompting corresponding staff to take corresponding countermeasures; analyzing based on the detected voltage parameters to generate lightning voltage data, analyzing based on the detected current parameters to generate lightning current data, and summarizing the lightning voltage data and the lightning current data to generate lightning stroke data, wherein the lightning stroke data comprises information such as a waveform diagram of voltage and current generated by the cable to be tested under the influence of lightning stroke, the position of the detected lightning stroke, the number of times of the lightning stroke and the like; and the lightning stroke data are sent to the distribution switch monitoring terminal, so that corresponding lightning protection measures can be conveniently adopted according to the condition that the cable to be tested is affected by lightning stroke.

2. The influence of lightning stroke on the cable comprises direct lightning stroke and induction lightning stroke, and when the lightning stroke is detected, a lightning voltage processing signal is generated; detecting whether lightning voltage processing signals exist in real time, if the lightning voltage processing signals are not received, judging that no lightning stroke is detected currently, comparing the voltage parameters measured on the current cable with preset lightning stroke voltage thresholds, when the voltage parameters are larger than the lightning stroke voltage thresholds, judging that the lightning stroke is detected, generating the lightning voltage processing signals, and sending alarm signals to the power distribution switch monitoring terminal so as to enable the power distribution switch monitoring terminal to execute corresponding lightning protection measures; when a lightning voltage processing signal is received, continuously comparing the voltage parameter with a lightning voltage threshold value, if the voltage parameter is larger than the lightning voltage threshold value, recording lightning voltage waveform information according to the detected voltage parameter, evaluating the position range where lightning strike occurs, and generating lightning position information so as to generate lightning voltage data; when the voltage parameter is detected to be smaller than the lightning voltage threshold value, the influence of the lightning strike on the cable is considered to be eliminated temporarily, the lightning voltage processing signal is eliminated, and the computer resources and the storage space occupied by continuously acquiring and storing the lightning voltage data are reduced.

3. Generating a lightning current processing signal when a lightning strike is detected; detecting whether lightning current processing signals exist in real time, if the lightning current processing signals are received, considering that lightning current is currently detected, recording lightning current waveform information, evaluating the position range of the lightning current to generate lightning current position information, and recording the occurrence times of the lightning current to generate lightning current data; if the lightning current processing signal is not received, continuously comparing the acquired current parameter with a lightning current threshold value so as to continuously detect a lightning event, when the current parameter is detected to be larger than the lightning current threshold value, detecting the lightning event, generating the lightning current processing signal so as to execute the steps of recording lightning current waveform information, evaluating the position range where the lightning stroke occurs to generate lightning stroke position information, and recording the occurrence times of the lightning stroke so as to generate lightning current data; when the current parameter is detected to be smaller than the lightning current threshold value, the lightning event is considered to be ended, the lightning current maximum value is evaluated, lightning current data of the last lightning event is generated after the lightning frequency information, the lightning position information and the lightning current maximum value are summarized, lightning current processing signals are removed, and computer resources and storage space occupied by continuously acquiring and storing the lightning current data are reduced.

Drawings

FIG. 1 is a flow chart of a method for measuring lightning parameters with a medium voltage switch in accordance with a first embodiment of the application.

FIG. 2 is a flow chart of step S10 in the method of measuring lightning parameters with a medium voltage switch according to the application.

FIG. 3 is another flow chart of step S10 in the method of the present application for measuring lightning parameters with a medium voltage switch.

FIG. 4 is a flow chart of step S20 in the method of measuring lightning parameters with a medium voltage switch according to the application.

FIG. 5 is a flow chart of step S30 in the method of measuring lightning parameters with a medium voltage switch of the present application.

FIG. 6 is a flow chart of step S40 in the method of measuring lightning parameters with a medium voltage switch of the application.

FIG. 7 is another flow chart of a method of measuring lightning parameters with a medium voltage switch of the present application.

Fig. 8 is a schematic diagram of a circuit arrangement of a device for measuring lightning parameters using a medium voltage switch in a second embodiment of the application.

Fig. 9 is a schematic diagram of a circuit device of a voltage parameter detection module and a current parameter detection module in a second embodiment of the application.

Fig. 10 is a schematic view of an apparatus in a third embodiment of the application.

Reference numerals illustrate:

1. a distribution switch monitoring terminal; 2. a data processing module; 21. an analog-to-digital converter; 22. a controller; 3. a voltage parameter detection module; 4. a current parameter detection module; 5. a wireless communication module; 6. and a staff terminal.

Detailed Description

The application is described in further detail below with reference to fig. 1 to 9.

Example 1

The application discloses a method for measuring lightning parameters by using a medium-voltage switch, which can be used for compiling a control program of an existing distribution switch monitoring terminal, so that the lightning parameters are measured by using the medium-voltage distribution switch monitoring terminal, and lightning stroke events are early-warned; the embodiment is described by taking the measurement of lightning parameters on a medium-voltage distribution switch monitoring terminal for a power transmission cable as an example, but the method for measuring lightning parameters by using a medium-voltage switch disclosed by the application can also be used in other scenes.

As shown in fig. 1, the method specifically comprises the following steps:

S10: and acquiring lightning parameters in real time, wherein the lightning parameters comprise voltage parameters and current parameters.

When the power transmission cable is affected by direct lightning stroke or induced lightning stroke, the voltage or current transmitted in the power transmission cable is increased, so that whether the power transmission cable is affected by the lightning stroke or not can be judged by detecting the change of the voltage and the current of the power transmission cable.

In this embodiment, the lightning parameters refer to parameters of variation amounts of voltage, current and the like generated when the cable to be tested is affected by lightning strike, and the lightning parameters include voltage parameters and current parameters; lightning strokes that may affect the safe state of the cable under test are defined as lightning stroke events, including direct lightning strokes and inductive lightning strokes.

The method comprises the steps of obtaining voltage parameters and current parameters of a cable to be tested, summarizing the voltage parameters and the current parameters into lightning parameters, and judging whether the cable to be tested is influenced by a lightning event or not and judging the severity of the influence of the lightning event on the cable to be tested according to the lightning parameters.

Further, since lightning strokes may generate thermal effects, temperature parameters may be added to lightning parameters according to actual requirements in order to evaluate the influence of lightning stroke events of the cable under test from the dimension of temperature.

Referring to fig. 2 and 3, in step S10, the specific steps of acquiring lightning parameters in real time include:

S11: and acquiring voltage data detected by the voltage sensor, and performing operational amplification processing on the voltage data.

Specifically, voltage data of the cable to be tested are detected in real time through a voltage sensor, so that the occurrence of a lightning event can be monitored in real time, and the influence of the lightning event on the cable to be tested can be quantitatively analyzed when the lightning event occurs; and the voltage data is subjected to operational amplification processing, so that signals are increased, and the accuracy of the voltage change condition in the cable is conveniently improved.

S12: and filtering the power frequency voltage fundamental wave from the voltage data after the operational amplification treatment.

In this embodiment, the power frequency voltage fundamental wave refers to a voltage fundamental wave when electric energy is normally transmitted in a cable to be tested when no lightning event occurs, wherein the power frequency refers to 50Hz, and specifically, the power frequency fundamental wave can be filtered by a power frequency filter, the actual filtering parameter of the power frequency filter can be set to 49-51Hz, and the power frequency can be set to other values or value intervals according to different countries or actual requirements.

Specifically, since the cable to be tested may be used for transmitting electric energy, the power frequency voltage originally exists in the cable to be tested, in order to be convenient for restoring the characteristics of the lightning voltage, the influence of the power frequency voltage on lightning parameter measurement needs to be reduced, and therefore the voltage data after operation amplification treatment needs to be filtered to remove the fundamental wave of the power frequency voltage, and a hardware method for removing a wave trap or a software method for digital filtering can be adopted; in the embodiment, the power frequency voltage fundamental wave is filtered by adopting a power frequency wave trap, so that the performance requirement of the filtered power frequency voltage fundamental wave on a singlechip or computer equipment is reduced, the time required for filtering the power frequency voltage fundamental wave is also convenient to reduce, and the program execution efficiency of the method for measuring the lightning parameters by using a medium voltage switch is improved.

S13: the voltage data is processed by a voltage converter, and voltage parameters are generated and sent to an analog-to-digital converter.

In the embodiment, the distribution switch monitoring terminal is modified on the basis of the existing medium-voltage switch and the equipped control device, and in order to reduce the influence on the reliability and modularization implementation of the system, the application adopts a singlechip with a high-speed analog-digital converter with the sampling frequency of more than 2MHz to perform analog-digital conversion and data processing.

Specifically, the voltage data after the power frequency voltage base is filtered is input into a voltage converter for processing, voltage parameters are generated based on the converted voltage data and are sent to an analog-to-digital converter, so that analog signals are converted into digital signals, and the subsequent further analysis of the voltage change of a cable caused by lightning stroke is facilitated in a single chip microcomputer.

Specifically, the lightning parameters measured by the medium voltage switch comprise the measurement of lightning voltage and lightning current, and the lightning voltage is measured by utilizing a voltage sensor equipped with the medium voltage switch, a small voltage signal follower circuit, an operational amplifier amplifying circuit and an isolating circuit on a control device which are equipped with the medium voltage switch to obtain a voltage signal with a certain amplitude; in order to realize modularization, lightning stroke voltage and current are subjected to analog-to-digital conversion independently; in order to improve the sampling efficiency, a high-speed analog-to-digital converter with the sampling frequency of more than 2MHz is adopted for analog-to-digital conversion.

S14: and acquiring current data detected by the current sensor, and performing operational amplification processing on the current data.

Specifically, current data of the cable to be tested are detected in real time through the current sensor, so that the occurrence of a lightning event can be monitored in real time, and the influence of the lightning event on the cable to be tested can be analyzed quantitatively when the lightning event occurs; the current data is subjected to operational amplification processing, so that signals are increased, the accuracy of the subsequent analysis of the change condition of the current in the cable is facilitated to be improved, the current sensor adopted in the embodiment is a rogowski coil sensor, the current sensor is suitable for measuring alternating current in a wider frequency range, no special requirements are imposed on conductors and dimensions, the instant response capability is high, and the high-frequency current and the high-current can be conveniently measured.

Specifically, when the lightning strike current is measured, the lightning arrester is in a conducting state only when the current reaches the conducting condition of the lightning arrester, and huge lightning strike current flows, so that lightning strike current data are simplified, the subsequent analysis efficiency for lightning strike parameters is improved, and in the embodiment, the measured current of the lightning arrester is directly used as current data without considering the influence of the original line current on the lightning strike current.

S15: and filtering the power frequency current fundamental wave from the current data after the operational amplification treatment.

In this embodiment, the power frequency current fundamental wave refers to a current fundamental wave when electric energy is normally transmitted in a cable to be tested when no lightning strike event occurs.

Specifically, since the cable to be tested may be used for transmitting electric energy, power frequency current originally exists in the cable to be tested, in order to facilitate the restoration of the characteristics of lightning current, the influence of the power frequency current on lightning parameter measurement needs to be reduced, and therefore, the current data after operational amplification needs to be filtered to remove a fundamental wave of the power frequency current, and a hardware method for removing a wave trap or a software method for digital filtering can be adopted; in the embodiment, the power frequency current fundamental wave is filtered by adopting a power frequency wave trap, so that the performance requirement of the filtered power frequency current fundamental wave on a singlechip or computer equipment is reduced, the time required for filtering the power frequency current fundamental wave is also convenient to reduce, and the program execution efficiency of the method for measuring the lightning parameters by using a medium-voltage switch is improved.

S16: the current data is processed by a current transformer to generate current parameters which are sent to an analog-to-digital converter.

Specifically, the current data with the power frequency current basis filtered is input into a current converter for processing, current parameters are generated based on the converted current data and are sent to an analog-to-digital converter, so that analog signals are converted into digital signals, and further analysis on current changes of cables caused by lightning strokes in a single chip microcomputer is facilitated.

The method comprises the steps of acquiring voltage parameters and current parameters, and aiming at facilitating the establishment of a corresponding maintenance plan after a lightning stroke event, so that the convenience of the maintenance plan is improved, and assistance can be provided for early warning of a subsequent lightning stroke event, so that lightning data are required to be processed.

If all the collected voltage data and current data are sent to the background for processing, the real-time processing may not be performed due to the fact that the power grid system has more devices and the data volume is too large, and therefore the data must be initially processed on the distribution switch monitoring terminal corresponding to the medium-voltage switch.

S20: comparing the voltage parameter with a preset lightning voltage threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning voltage data.

In this embodiment, the lightning strike voltage threshold refers to a threshold used for judging whether the line to be tested is struck by lightning according to the voltage parameter.

Specifically, comparing the voltage parameter with a preset lightning stroke voltage threshold value so as to generate corresponding warning information according to a comparison result of the voltage parameter, thereby being convenient for prompting corresponding staff to take corresponding countermeasures; analysis is performed based on the detected voltage parameter to generate lightning voltage data.

Judging whether a lightning stroke event occurs or not according to the detected values of the voltage parameter and the current parameter, and generating a lightning stroke voltage processing signal when the lightning stroke is detected; comparing the voltage parameter with a preset lightning voltage threshold, and generating corresponding warning information and acquiring lightning voltage data based on the comparison result, referring to fig. 4, in step S20, the method includes:

S21: and detecting the lightning voltage processing signal in real time, comparing the voltage parameter with the lightning voltage threshold value if the lightning voltage processing signal is not received, and generating the lightning voltage processing signal and sending an alarm signal to the distribution switch monitoring terminal if the voltage parameter is greater than the lightning voltage threshold value.

In this embodiment, the lightning voltage processing signal refers to a signal generated according to a detected lightning event, for triggering data processing for a voltage parameter; the alarm signal is a signal for controlling the distribution switch monitoring terminal to take lightning countermeasures.

Specifically, detecting a lightning voltage processing signal in real time, if the lightning voltage processing signal is not received, considering that a lightning event does not occur temporarily, and comparing the detected voltage parameter with a lightning voltage threshold in real time so as to detect the lightning event in real time; when the voltage parameter is greater than the lightning stroke voltage threshold value, a lightning stroke event is considered to occur, a lightning stroke voltage processing signal is generated, and an alarm signal is sent to the distribution switch monitoring terminal, so that the distribution switch monitoring terminal can timely take lightning stroke countermeasures, such as power failure and the like.

S22: if the lightning voltage processing signal is received, comparing the voltage parameter with a lightning stroke voltage threshold value, if the voltage parameter is larger than the lightning stroke voltage threshold value, recording lightning voltage waveform information, evaluating lightning stroke position information, generating lightning voltage data, and if the voltage parameter is smaller than the lightning stroke voltage threshold value, clearing the lightning voltage processing signal.

Specifically, when a lightning voltage processing signal is detected, a lightning event is considered to occur, a voltage parameter is continuously compared with a lightning voltage threshold value so as to judge the duration of the lightning event, the period in which the voltage parameter is larger than the lightning voltage threshold value is taken as the duration of the lightning event, the value of the lightning voltage is continuously recorded in the duration of the lightning event, a lightning voltage waveform chart is generated as lightning voltage waveform information according to the lightning voltage value and a corresponding time node, and a distribution switch monitoring terminal corresponding to the voltage parameter which is detected to be larger than the lightning voltage threshold value is used for judging the occurrence position of the lightning event, generating lightning position information and generating lightning voltage data according to the lightning voltage waveform information and the lightning position information.

Specifically, when the voltage parameter is detected to be smaller than the lightning strike voltage threshold value, the lightning strike event is considered to be terminated, and the lightning voltage processing signal can be cleared.

S30: comparing the current parameter with a preset lightning current threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning current data.

In this embodiment, the lightning current threshold is a threshold for determining whether the line to be tested is struck by lightning according to the current parameter.

Specifically, the current parameters are compared with a preset lightning current threshold value, so that corresponding warning information is generated according to the comparison result of the current parameters, and corresponding staff is conveniently prompted to take corresponding countermeasures; analysis is performed based on the detected current parameters to generate lightning current data.

Judging whether a lightning stroke event occurs or not according to the detected values of the voltage parameter and the current parameter, and generating a lightning current processing signal when the lightning stroke is detected; comparing the current parameter with a preset lightning current threshold, and generating corresponding warning information and acquiring lightning current data based on the comparison result, referring to fig. 5, in step S30, the method includes:

S31: and detecting lightning current processing signals in real time, and if the lightning current processing signals are received, recording lightning current waveform information, evaluating lightning stroke position information and lightning stroke frequency information, and generating lightning current data.

In this embodiment, the lightning current processing signal refers to a signal generated according to a detected lightning event for triggering data processing for a current parameter.

Specifically, detecting lightning current processing signals in real time, when the lightning current processing signals are detected, considering that lightning events occur, continuously comparing current parameters with lightning current thresholds so as to judge duration time of the lightning events, taking a period in which the current parameters are larger than the lightning current thresholds as the duration time of the lightning events, continuously taking the value of lightning current in the duration time of the lightning events, and generating a lightning current waveform chart as lightning current waveform information according to the value of the lightning current and corresponding time nodes; judging the occurrence position of a lightning event according to the distribution switch monitoring terminal corresponding to the detected current parameter which is larger than the lightning current threshold value, generating lightning stroke position information, and generating lightning stroke frequency information according to the frequency of the detected lightning event; and generating lightning current data according to the lightning current waveform information, the lightning stroke position information and the lightning stroke frequency information.

S32: if the lightning current processing signal is not received, comparing the current parameter with the lightning current threshold, if the current parameter is larger than the lightning current threshold, generating the lightning current processing signal, updating the lightning stroke frequency information, recording the lightning current waveform information, evaluating the lightning stroke position information, and generating lightning current data.

Specifically, if the lightning current processing signal is not received, the lightning event is considered to not occur temporarily, and the detected current parameter is compared with the lightning current threshold in real time so as to detect the lightning event in real time; and when the current parameter is larger than the lightning current threshold value, a lightning event is considered to occur, and a lightning current processing signal is generated.

Specifically, after a lightning event is detected, continuously comparing a current parameter with a lightning current threshold value so as to judge the duration of the lightning event, taking the period in which the current parameter is larger than the lightning current threshold value as the duration of the lightning event, continuously taking the value of lightning current in the duration of the lightning event, and generating a lightning current waveform diagram as lightning current waveform information according to the value of the lightning current and a corresponding time node; judging the occurrence position of a lightning event according to the distribution switch monitoring terminal corresponding to the detected current parameter which is larger than the lightning current threshold value, generating lightning stroke position information, and generating lightning stroke frequency information according to the frequency of the detected lightning event; and generating lightning current data according to the lightning current waveform information, the lightning stroke position information and the lightning stroke frequency information.

S33: if the current parameter is smaller than the lightning current threshold, evaluating the lightning current maximum value, generating lightning current data based on the lightning stroke frequency information, the lightning stroke position information and the lightning current maximum value, and eliminating a lightning current processing signal.

Specifically, when the current parameter is detected to be smaller than the lightning current threshold value, the lightning event is considered to be terminated, the lightning current data is updated and stored based on the acquired lightning current maximum value, lightning frequency information, lightning position information and lightning current maximum value, lightning current processing signals are cleared, and processing of the current parameter is suspended, so that computer resources and storage space are saved.

S40: and generating lightning stroke data based on the lightning pressure data and the lightning flow data and sending the lightning stroke data to a distribution switch monitoring terminal, wherein the lightning stroke data comprises a lightning waveform chart, lightning stroke position information and lightning stroke frequency information.

Specifically, lightning voltage data and lightning current data are summarized to generate lightning stroke data, the lightning stroke data are sent to a distribution switch monitoring terminal, and analysis of the lightning stroke data is facilitated, wherein the lightning stroke data comprise information such as a waveform diagram of voltage and current generated by the influence of lightning stroke of a cable to be tested, the position of the detected lightning stroke, the number of times of the lightning stroke and the like.

In particular, referring to fig. 6, in step S40, the method includes:

S41: and inputting each piece of lightning stroke data into a lightning stroke statistical analysis model, and determining lightning stroke influence information of each cable to be tested based on the lightning stroke data corresponding to different distribution switch monitoring terminals, wherein the lightning stroke influence information comprises lightning stroke probability information, lightning stroke intensity information and cable on-off information.

In this embodiment, the lightning probability information refers to information of the determined probability of lightning strike of the cable to be tested after analysis based on the lightning strike event detected by the whole current transmission line network; the lightning intensity information refers to the severity of a lightning event occurring in a current line to be tested and the severity information of an accident which possibly occurs; the cable on-off information refers to the information of the current on-off condition of each section of cable in the whole transmission line network.

Specifically, each piece of lightning stroke data is input into the accumulated statistical analysis model so as to evaluate the influence of lightning strokes on each cable to be tested according to the lightning stroke data detected by different distribution switch monitoring terminals, wherein the influence comprises lightning stroke probability information, lightning stroke intensity information and cable on-off information, and further lightning stroke influence information is generated so as to be convenient for knowing the influence condition of each cable to be tested on a lightning stroke event.

S42: and acquiring a circuit layout diagram, and determining power supply areas corresponding to the cables to be tested according to the circuit layout diagram.

In this embodiment, the circuit layout diagram refers to a design layout drawing of the entire transmission line network where the cable to be tested is located.

Specifically, a circuit layout diagram is obtained so as to determine a power supply area corresponding to each cable to be tested according to the circuit layout diagram, so that the affected area of a lightning event can be conveniently and subsequently evaluated, and the condition of the lightning event can be timely informed to users in the affected area; on the other hand, the type, the installation time and other information of each cable and circuit equipment in the transmission line network can be determined according to the circuit layout diagram, so that the service lives of various circuit equipment in the transmission line network can be conveniently and subsequently evaluated.

S43: based on the lightning stroke influence information, corresponding lightning stroke response information is generated and sent to the user terminal in the corresponding power supply area.

Specifically, based on the lightning stroke influence information, the influenced conditions of each cable and circuit equipment to be tested are determined, corresponding lightning stroke corresponding information is generated and sent to the user terminal of the corresponding power supply area, and measures required by a user for coping with the lightning stroke event are conveniently informed, so that possible loss of the lightning stroke event to the user is reduced; the lightning strike coping information comprises prompting a user to overhaul electric appliances possibly damaged in a lightning strike event, avoiding the electric appliances to be used as much as possible in thunderstorm weather, and the like.

Wherein, referring to fig. 7, after step S40, the method for measuring lightning parameters with the medium voltage switch further comprises:

S50: and inputting each lightning stroke data into a lightning stroke statistical analysis module to generate historical lightning stroke information of each circuit device.

Specifically, each lightning stroke data is input into the lightning stroke statistical analysis module to count the historical lightning stroke events which occur to the cable corresponding to the lightning stroke statistical analysis module, so that the accumulated influence condition of each circuit device on the lightning stroke events can be conveniently evaluated, and the historical lightning stroke information of each circuit device is generated.

S60: and acquiring model information of each circuit device, and acquiring parameter information of the corresponding circuit device based on the model information.

The model information of each circuit device in the transmission line network is obtained according to the circuit layout diagram, so that parameter information of the corresponding circuit device is conveniently determined according to the model information, and the bearing capacity of each circuit device to lightning stroke is conveniently obtained.

S70: and establishing a corresponding equipment state model based on the parameter information of each circuit equipment, inputting historical lightning stroke information into the corresponding equipment state model, generating equipment state information, and generating an equipment inspection plan based on each piece of equipment state information.

Specifically, a corresponding equipment state model is established based on parameter information of each circuit equipment, historical lightning stroke information is input into the corresponding equipment state model, ageing and damage conditions of each circuit equipment under the influence of lightning stroke events received by the history are conveniently evaluated, equipment state information is further generated, ageing and damage conditions of each current circuit equipment are conveniently obtained, an equipment inspection plan is generated based on the equipment state information of each circuit equipment, the equipment inspection plan is formulated according to the historical lightning stroke conditions of each circuit equipment, and the circuit equipment with serious ageing and damage conditions is conveniently improved in maintenance and repair frequency, so that the safety of the circuit equipment is improved.

It should be understood that the sequence number of each step in the above embodiment does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiment of the present application.

Example two

As shown in fig. 8, the application discloses a device for measuring lightning parameters by using a medium-voltage switch, which comprises a power distribution switch monitoring terminal 1, a data processing module 2, a voltage parameter detection module 3 and a current parameter detection module 4, wherein the power distribution switch monitoring terminal 1 is used for controlling the on-off of each cable so as to ensure the line safety, the voltage parameter detection module 3 and the current parameter detection module 4 are respectively used for collecting voltage parameters and current parameters, and the data processing module 2 is used for processing the collected voltage parameters and current parameters.

The power distribution switch monitoring terminal 1 is electrically connected with a wireless communication module 5, in this embodiment, the wireless communication module 5 is specifically a module adopting a GPRS communication technology, so that the power distribution switch monitoring terminal 1 can conveniently establish communication with a staff terminal 6 operated by a remote cable maintainer, so as to transmit detection data to the maintainer terminal and receive a control instruction sent by the staff.

The distribution switch monitoring terminal 1 is electrically connected to the data processing module 2, and the data processing module 2 is provided with a controller 22 for executing any one of the above methods for measuring lightning parameters with the medium voltage switch, so as to control the device for measuring lightning parameters with the medium voltage switch; the data processing module 2 is further provided with an analog-to-digital converter 21, the analog-to-digital converter 21 is required to be of a model with a sampling frequency of more than 2MHz, the analog-to-digital converter 21 is electrically connected to the voltage parameter detecting module 3 and the current parameter detecting module 4, the voltage parameter detecting module 3 and the current parameter detecting module 4 are electrically connected to the cable to be detected so as to collect the voltage parameter and the current parameter from the cable to be detected, and the analog-to-digital converter 21 is used for converting analog signal data detected by the voltage parameter detecting module 3 and the current parameter detecting module 4 into digital signal data.

Referring to fig. 9, the voltage parameter detecting module 3 includes a voltage sensor electrically connected to a cable to be tested, the voltage sensor electrically connected to a voltage follower electrically connected to an isolation operational amplifier electrically connected to a trap electrically connected to a voltage converter electrically connected to the analog-to-digital converter 21.

The voltage sensor is used for detecting voltage data of the cable to be tested, and the detected voltage data is input to the isolation operational amplifier through the voltage follower so as to isolate and amplify the voltage data, so that the accuracy of subsequent analysis on the voltage change is improved; the isolation operational amplifier inputs the voltage data after operational amplification into the wave trap to filter the power frequency voltage fundamental wave; the voltage data after the voltage base is filtered by the wave trap is subjected to electric quantity conversion and isolation by the voltage converter and then is input into the analog-to-digital converter 21 so as to be subsequently converted into a digital signal for further analysis and treatment; the data processing module 2 processes the data input from the analog-to-digital converter 21 by the controller 22.

The current parameter detection module 4 comprises a current sensor, the current sensor is electrically connected with a cable to be detected, the current sensor is electrically connected with a current follower, the current follower is electrically connected with an isolation operational amplifier, the isolation operational amplifier is electrically connected with a trap, and the trap is electrically connected with the analog-to-digital converter 21.

The current sensor is used for detecting current data of the cable to be tested, and the detected current data is input to the isolation operational amplifier through the current follower so as to isolate and amplify the current data, thereby improving the accuracy of subsequent analysis on current change; the isolation operational amplifier inputs the current data after operational amplification into the wave trap to filter the power frequency current fundamental wave; the current data with the current base filtered is input to the analog-to-digital converter 21 by the wave trap, so that the current data is subsequently converted into a digital signal and then is further analyzed and processed; the data processing module 2 processes the data input from the analog-to-digital converter 21 by the controller 22.

Example III

A computer device, which may be a server, may have an internal structure as shown in fig. 10. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer equipment is used for storing lightning parameters, lightning voltage threshold values, warning information, lightning voltage data, lightning current threshold values, lightning current data, lightning stroke data and other data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by the processor, implements an AI-based face recognition verification management method.

In one embodiment, a computer device is provided comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the following steps when executing the computer program:

S10: acquiring lightning parameters in real time, wherein the lightning parameters comprise voltage parameters and current parameters;

S20: comparing the voltage parameter with a preset lightning voltage threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning voltage data;

s30: comparing the current parameter with a preset lightning current threshold value, generating corresponding warning information based on a comparison result, and acquiring lightning current data;

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK), DRAM (SLDRAM), memory bus (rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some of the features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A method for measuring lightning parameters with a medium voltage switch, comprising:

generating lightning stroke data based on the lightning voltage data and the lightning flow data and sending the lightning stroke data to a distribution switch monitoring terminal, wherein the lightning stroke data comprises a lightning waveform chart, lightning stroke position information and lightning stroke frequency information;

Generating a lightning voltage processing signal when a lightning strike is detected; comparing the voltage parameter with a preset lightning voltage threshold value, and generating corresponding warning information and acquiring lightning voltage data based on a comparison result, wherein the step of acquiring the lightning voltage data comprises the following steps:

Detecting lightning voltage processing signals in real time, comparing voltage parameters with lightning voltage threshold values if the lightning voltage processing signals are not received, generating the lightning voltage processing signals and sending alarm signals to a distribution switch monitoring terminal if the voltage parameters are larger than the lightning voltage threshold values; comparing the voltage parameter with a lightning stroke voltage threshold value if the lightning stroke voltage processing signal is received, recording lightning stroke voltage waveform information if the voltage parameter is larger than the lightning stroke voltage threshold value, evaluating lightning stroke position information, generating lightning stroke voltage data, and clearing the lightning stroke voltage processing signal if the voltage parameter is smaller than the lightning stroke voltage threshold value;

the lightning voltage waveform information logging method specifically comprises the steps of taking a period of which the voltage parameter is larger than a lightning voltage threshold value as the duration time of a lightning event, continuously logging the value of the lightning voltage in the duration time of the lightning event, and generating a lightning voltage waveform chart as the lightning voltage waveform information according to the lightning voltage value and a corresponding time node;

The acquiring lightning current waveform information comprises the following steps: taking the period of the current parameter larger than the lightning current threshold value as the duration time of the lightning event, continuously recording the value of lightning current in the duration time of the lightning event, and generating a lightning current waveform chart as lightning current waveform information according to the value of the lightning current and the corresponding time node;

generating lightning stroke data based on the lightning pressure data and the lightning flow data and sending the lightning stroke data to a distribution switch monitoring terminal, wherein the lightning stroke data comprises:

Inputting each lightning stroke data into a lightning stroke statistical analysis model, and determining lightning stroke influence information of each cable to be tested based on the lightning stroke data corresponding to different distribution switch monitoring terminals; the lightning stroke influence information comprises lightning stroke probability information, lightning stroke intensity information and cable on-off information; the lightning probability information is information of the lightning probability of the cable to be tested, which is determined after analysis based on the lightning event detected by the whole current transmission line network; the lightning intensity information refers to the severity of a lightning event occurring in a current line to be tested and the severity information of an accident which possibly occurs; the cable on-off information refers to the current on-off condition information of each section of cable in the whole transmission line network;

acquiring a circuit layout diagram, and determining power supply areas corresponding to the cables to be tested according to the circuit layout diagram; the circuit layout diagram refers to a design planning drawing of the whole transmission line network where the cable to be tested is located;

Based on the lightning stroke influence information, determining the influenced conditions of each cable to be tested and circuit equipment, generating corresponding lightning stroke response information and transmitting the corresponding lightning stroke response information to the user terminal in the corresponding power supply area; the lightning strike response information includes prompting the user to overhaul the electrical appliances which are possibly damaged in the lightning strike event, and avoiding the electrical appliance types used in the thunderstorm weather as much as possible.

2. The method of measuring lightning parameters with a medium voltage switch of claim 1, wherein: generating a lightning current processing signal when a lightning strike is detected; comparing the current parameter with a preset lightning current threshold value, and generating corresponding warning information and acquiring lightning current data based on a comparison result, wherein the step of obtaining the lightning current data comprises the following steps:

3. The method of measuring lightning parameters with a medium voltage switch of claim 1, wherein: after the step of generating lightning stroke data based on the lightning voltage data and the lightning flow data and transmitting the lightning stroke data to the distribution switch monitoring terminal, the method comprises the following steps:

4. The method of measuring lightning parameters with a medium voltage switch of claim 1, wherein: the step of acquiring the lightning parameters in real time comprises the following steps:

5. The method of measuring lightning parameters with a medium voltage switch of claim 1, wherein: the step of acquiring the lightning parameters in real time comprises the following steps:

6. The device for measuring the lightning parameters by using the medium voltage switch is characterized by comprising a distribution switch monitoring terminal (1), a data processing module (2), a voltage parameter detection module (3) and a current parameter detection module (4), wherein the distribution switch monitoring terminal (1) is electrically connected with a wireless communication module (5), the distribution switch monitoring terminal (1) is electrically connected with the data processing module (2), the data processing module (2) is provided with an analog-to-digital converter (21) and a controller (22) for executing the method for measuring the lightning parameters by using the medium voltage switch according to any one of claims 1-5, the analog-to-digital converter (21) is electrically connected with the voltage parameter detection module (3) and the current parameter detection module (4), and the voltage parameter detection module (3) and the current parameter detection module (4) are electrically connected with a cable to be tested.

7. The device for measuring lightning parameters with a medium voltage switch of claim 6, wherein: the voltage parameter detection module (3) comprises a voltage sensor, the voltage sensor is electrically connected to a cable to be detected, the voltage sensor is electrically connected with a voltage follower, the voltage follower is electrically connected with an isolation operational amplifier, the isolation operational amplifier is electrically connected with a trap, the trap is electrically connected with a voltage converter, and the voltage converter is electrically connected to an analog-to-digital converter (21).

8. The device for measuring lightning parameters with a medium voltage switch of claim 7, wherein: the current parameter detection module (4) comprises a current sensor, the current sensor is electrically connected to a cable to be detected, the current sensor is electrically connected with a current follower, the current follower is electrically connected with an isolation operational amplifier, the isolation operational amplifier is electrically connected with a trap, and the trap is electrically connected to an analog-to-digital converter (21).