CN116859166A - Lightning arrester running state detection method and system - Google Patents
Lightning arrester running state detection method and system Download PDFInfo
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- CN116859166A CN116859166A CN202311005095.1A CN202311005095A CN116859166A CN 116859166 A CN116859166 A CN 116859166A CN 202311005095 A CN202311005095 A CN 202311005095A CN 116859166 A CN116859166 A CN 116859166A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/56—Testing of electric apparatus
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Abstract
本申请涉及一种避雷器运行状态检测方法及系统，通过测量避雷器的磁场，根据磁场确定避雷器的泄漏电流，测量避雷器的感应电场，根据感应电场确定避雷器的端电压，对避雷器的泄漏电流与端电压进行分析，根据分析结果，对避雷器的运行状态进行评估，无需通过电流互感器与电压互感器直接接入待测导体的方式，在与电力系统不产生直接电力接触的情况下完成对避雷器泄漏电流与端电压的测量，避免了电力系统短路以及测量装置带来的电力系统故障的产生，提高了电力系统的稳定性与安全性。
This application relates to a method and system for detecting the operating status of an arrester. By measuring the magnetic field of the arrester, the leakage current of the arrester is determined based on the magnetic field, the induced electric field of the arrester is measured, the terminal voltage of the arrester is determined based on the induced electric field, and the leakage current and terminal voltage of the arrester are measured. Carry out analysis and evaluate the operating status of the arrester based on the analysis results. There is no need to directly connect the current transformer and voltage transformer to the conductor to be measured, and the leakage current of the arrester can be completed without direct electrical contact with the power system. The measurement of the terminal voltage avoids short circuits in the power system and power system faults caused by the measuring device, and improves the stability and safety of the power system.
Description
Technical Field
The application relates to the technical field of lightning arrester operation state detection, in particular to a lightning arrester operation state detection method and a lightning arrester operation state detection system.
Background
Along with the continuous development of smart power grids, the construction of a novel power system is gradually performed, and high digitization and high intellectualization are taken as the remarkable characteristics of the novel power system, and the novel power system is realized by constructing a real-time monitoring sensing technology with more accurate measurement and more timely feedback in the power system. The lightning arrester is used as important power equipment in the power system, and whether the normal operation of the lightning arrester directly influences whether the power system can stably operate or not, so that accurate judgment on the operation state of the lightning arrester is necessary.
In the related art, a current transformer and a voltage transformer are mostly adopted to collect the total leakage current and terminal voltage information of the lightning arrester respectively, and direct electrical connection is needed between the current transformer and the voltage transformer and the conductor to be tested, which means that the surface insulating layer of the conductor to be tested needs to be destroyed before signal collection. In a high-voltage-class power transmission system, faults such as short circuit and the like of the power system can be easily caused by the damage of an insulating layer, and the faults of the measuring device can also cause the power system to break down, so that the probability of occurrence of the faults of the power system is improved, abnormal operation of a plurality of power equipment can be possibly caused, and even the safe and stable operation of the whole power system is influenced.
Currently, no effective solution has been proposed for the problem of the reduction of the stability of the power system caused by the detection of the operating state of the lightning arrester in the related art.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method and a system for detecting an operating state of an arrester, which can improve the stability of a power system during the process of detecting the operating state of the arrester.
In a first aspect, the application provides a method for detecting the operating state of a lightning arrester. The method comprises the following steps:
and measuring the magnetic field of the lightning arrester, and determining the leakage current of the lightning arrester according to the magnetic field.
And measuring an induced electric field of the lightning arrester, and determining the terminal voltage of the lightning arrester according to the induced electric field.
And analyzing the leakage current and the terminal voltage of the lightning arrester, and evaluating the operation state of the lightning arrester according to an analysis result.
In one embodiment, analyzing the leakage current and the terminal voltage of the arrester includes:
and acquiring resistive current and capacitive current passing through the lightning arrester according to the leakage current and the terminal voltage.
And analyzing the leakage current, the resistive current and the capacitive current, and evaluating the operation state of the lightning arrester according to an analysis result.
In one embodiment, obtaining resistive and capacitive currents through the arrester based on the leakage current and the terminal voltage includes:
and acquiring the current harmonic amplitude and the current harmonic initial phase of the lightning arrester according to the leakage current.
And acquiring the voltage harmonic amplitude and the voltage harmonic initial phase of the lightning arrester according to the terminal voltage.
And calculating the capacitive current and the resistive current according to the current harmonic amplitude, the current harmonic initial phase, the voltage harmonic amplitude, the voltage harmonic initial phase and the fundamental frequencies of the leakage current and the terminal voltage.
In one embodiment, the evaluating the operation state of the lightning arrester according to the analysis result includes:
the duty cycle of the resistive current in the leakage current is calculated.
And under the condition that the duty ratio is larger than a first threshold value and smaller than a second threshold value, judging that the lightning arrester is in a normal running state.
And under the condition that the duty ratio is smaller than the first threshold value or larger than the second threshold value, judging that the lightning arrester is in an abnormal operation state.
In one embodiment, after evaluating the operational status of the arrester, the method further comprises:
historical measurement data is obtained.
And evaluating the running state of the lightning arrester according to the current measurement data and the historical measurement data, and obtaining the state change trend of the lightning arrester.
And predicting the residual service life of the lightning arrester according to the state change trend.
In a second aspect, the application also provides a lightning arrester operation state detection system. The system comprises: the system comprises a measurement module, a transmission module and an evaluation module; wherein,,
the measuring module is used for measuring a magnetic field of the lightning arrester and an induced electric field of the lightning arrester, determining a leakage current signal of the lightning arrester according to the magnetic field and determining a terminal voltage signal of the lightning arrester according to the induced electric field;
the transmission module is connected with the measurement module and is used for transmitting the leakage current signal and the terminal voltage signal;
and the evaluation module is connected with the transmission module and is used for evaluating the operation state of the lightning arrester according to the leakage current signal and the terminal voltage signal.
In one embodiment, the measurement module comprises a fluxgate current sensor, a non-contact voltage measurer and a signal processor, wherein neither the fluxgate current sensor nor the non-contact voltage measurer is electrically connected with the lightning arrester; wherein,,
the fluxgate current sensor is used for measuring a magnetic field generated by leakage current of the lightning arrester and acquiring the leakage current signal of the lightning arrester according to the magnetic field.
The non-contact voltage measurer is connected with the fluxgate current sensor in parallel and is used for measuring the induced electric field of the lightning arrester and acquiring the terminal voltage signal of the lightning arrester according to the induced electric field.
In one embodiment, the transmission module includes: an optical transmitter, a transmission line, an optical receiver, and a signal power controller; wherein,,
the optical transmitter is used for receiving the first electric signal and converting the first electric signal into a first optical signal for output.
The transmission line is connected with the optical transmitter and is used for transmitting the first optical signal.
The optical receiver is connected with the transmission line and is used for receiving the first optical signal and converting the first optical signal into a second electrical signal.
In one embodiment, the transmission module further includes: and the signal power controller is connected with the optical transmitter and the optical receiver and is used for adjusting the amplification factor and the optical power attenuation factor of the optical transmitter according to the first optical signal power received by the optical receiver until the first optical signal power is in the optimal receiving range of the optical receiver.
In one embodiment, the evaluation module comprises: a data preprocessing unit and an evaluation unit; wherein,,
the data preprocessing circuit is connected with the transmission module and is used for receiving the second electric signal and converting the second electric signal into a first digital signal.
The evaluation device is connected with the data preprocessing circuit and is used for receiving the first digital signal and evaluating the operation state of the lightning arrester according to the first digital signal.
According to the method and the system for detecting the running state of the lightning arrester, the leakage current of the lightning arrester is determined according to the magnetic field, the induced electric field of the lightning arrester is measured, the terminal voltage of the lightning arrester is determined according to the induced electric field, the leakage current and the terminal voltage of the lightning arrester are analyzed, the running state of the lightning arrester is estimated according to the analysis result, the current transformer and the voltage transformer are not required to be directly connected into a conductor to be detected, the measurement of the leakage current and the terminal voltage of the lightning arrester is completed under the condition that direct electric power contact is not generated with an electric power system, the generation of electric power system faults caused by electric power system short circuits and measuring devices is avoided, and the stability and the safety of the electric power system are improved.
Drawings
FIG. 1 is a flow chart of a method for detecting the operating state of an arrester in one embodiment;
FIG. 2 is an overall flow chart of a method of detecting the operational status of a lightning arrester in one embodiment;
FIG. 3 is a block diagram of an arrester operating condition detection system in one embodiment;
fig. 4 is a hardware configuration diagram of an arrester operation state detection system in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In one embodiment, as shown in fig. 1, there is provided a method for detecting an operation state of a lightning arrester, including the steps of:
step S102, measuring the magnetic field of the lightning arrester, and determining the leakage current of the lightning arrester according to the magnetic field.
The magnetic field of the lightning arrester is measured, and the full current of the lightning arrester, namely leakage current, can be obtained through the electromagnetic induction principle. Because the measuring object is the magnetic field of the lightning arrester, the magnetic field can be measured by adopting the fluxgate current sensor, and therefore, the measuring device is not required to be directly connected into a conductor to be measured, and the measurement of the leakage current of the lightning arrester can be completed under the condition of no direct power contact.
Step S104, measuring an induced electric field of the lightning arrester, and determining terminal voltage of the lightning arrester according to the induced electric field;
the structure of the bipolar plate is adopted, and the electric field of the lightning arrester is sensed according to the electric field sensing principle, so that the terminal voltage of the lightning arrester is determined. Because the measuring object is the electric field of the lightning arrester, the measuring device is not required to be directly connected into the conductor to be measured, and the measurement of the terminal voltage of the lightning arrester can be completed under the condition of no direct power contact.
And S106, analyzing the leakage current and terminal voltage of the lightning arrester, and evaluating the operation state of the lightning arrester according to the analysis result.
After the leakage current and terminal voltage of the lightning arrester are obtained, the resistive current and the capacitive current of the lightning arrester are extracted according to the leakage current and the voltage phase of the lightning arrester, frequency domain data of the lightning arrester can be obtained after Fourier analysis is carried out on the current, and the detection and the evaluation of the running state of the lightning arrester can be realized by analyzing the frequency domain data of the lightning arrester, namely, the current fundamental wave and the current harmonic wave.
According to the method for detecting the running state of the lightning arrester, the leakage current of the lightning arrester is determined according to the magnetic field, the induced electric field of the lightning arrester is measured, the terminal voltage of the lightning arrester is determined according to the induced electric field, the leakage current and the terminal voltage of the lightning arrester are analyzed, the running state of the lightning arrester is estimated according to the analysis result, the current transformer and the voltage transformer are not required to be directly connected into a conductor to be detected, the measurement of the leakage current and the terminal voltage of the lightning arrester is completed under the condition that direct electric power contact is not generated with an electric power system, the generation of electric power system faults caused by short circuits of the electric power system and measuring devices is avoided, and the stability and the safety of the electric power system are improved.
In one embodiment, analyzing the leakage current and terminal voltage of the arrester includes: acquiring resistive current and capacitive current passing through the lightning arrester according to the leakage current and the terminal voltage; and analyzing the leakage current, the resistive current and the capacitive current, and evaluating the operation state of the lightning arrester according to the analysis result.
And extracting the resistive current and the capacitive current of the lightning arrester according to the leakage current and the voltage phase of the lightning arrester. When the lightning arrester has ageing or damp problems, the resistive current component in the leakage current of the lightning arrester increases. However, since the main component in the leakage current of the lightning arrester is a capacitive current, the resistive current occupies a relatively small area, so that even if the resistive current changes, the ratio of the resistive current to the capacitive current component is relatively small, and only the capacitive current is detected, the problem of inaccurate detection can occur, and erroneous judgment is caused. In the embodiment of the application, the leakage current, the resistive current and the capacitive current are comprehensively analyzed, and the running state of the lightning arrester is judged according to the comprehensive analysis result of each current component.
In this embodiment, the leakage current and the terminal voltage obtained by measurement are used to extract the resistive current and the capacitive current, and the leakage current, the resistive current and the capacitive current are comprehensively analyzed to obtain the operation state of the lightning arrester, so that the erroneous judgment problem caused by only considering the capacitive current component is avoided, and the accuracy of the operation state detection of the lightning arrester is improved.
In one embodiment, obtaining resistive and capacitive currents through the arrester based on the leakage current and the terminal voltage includes: according to the leakage current, the current harmonic amplitude and the current harmonic initial phase of the lightning arrester are obtained, according to the terminal voltage, the voltage harmonic amplitude and the voltage harmonic initial phase of the lightning arrester are obtained, and according to the current harmonic amplitude, the current harmonic initial phase, the voltage harmonic amplitude, the voltage harmonic initial phase and the fundamental frequency of the leakage current and the terminal voltage, the capacitive current and the resistive current are calculated.
Wherein, the leakage current i and the terminal voltage u of the lightning arrester obtained by measurement can be represented by the following formula (1):
wherein U is k The amplitude of the k-th harmonic of the voltage; f is the fundamental frequency of voltage and current; phi (phi) k The primary phase of the k-th harmonic of the voltage; i ak The amplitude of the k-th harmonic of the current; phi (phi) ak The primary phase of the k-th harmonic of the current; resistive current component I in full current of zinc oxide arrester according to volt-ampere characteristic of zinc oxide arrester Rk And capacitive current component I Ck Is 90 in phase difference ° And the resistive current is in the same phase as its harmonic voltage, thus having formula (2):
according to the formula (2), the resistive current and the capacitive current of the lightning arrester can be calculated, and the following formula (3):
according to the formulas (1), (2) and (3), each secondary resistive current and each secondary capacitive current of the lightning arrester can be obtained, and the operation state of the lightning arrester is evaluated according to the content of resistive current fundamental waves and third harmonic waves.
In the embodiment, by considering the influence of the resistive current and multiple harmonics, in a power system running in parallel with three phases, the problem of which phase is found can be specifically determined, the misjudgment phenomenon caused by the excessively low content of the resistive current is avoided, and the accuracy of the running state detection of the lightning arrester is improved.
In one embodiment, evaluating the operational status of the arrester based on the analysis results includes: calculating the duty ratio of the resistive current in the leakage current, and judging that the lightning arrester is in a normal running state under the condition that the duty ratio is larger than a first threshold value and smaller than a second threshold value, and judging that the lightning arrester is in an abnormal running state under the condition that the duty ratio is smaller than the first threshold value or larger than the second threshold value.
The method for evaluating the operation state of the lightning arrester according to the calculated resistive current fundamental wave and third harmonic content comprises the following steps: and judging the content of the resistive current in the leakage current of the lightning arrester, wherein the ratio of the resistive current is larger than a first threshold value and smaller than a second threshold value when the lightning arrester works normally, the first threshold value is 10%, the second threshold value is 20%, and the ratio of the resistive current exceeding the range is judged to be in an abnormal working state.
In the prior art, the operation state of the lightning arrester device is mostly detected according to the total leakage current or the resistive fundamental component of the leakage current, wherein the main component of the total leakage current is capacitive current, and the resistive current occupies smaller area. When the lightning arrester is aged or wetted, the resistive current component in the leakage current of the lightning arrester is increased, but the duty ratio is still smaller relative to the capacitive current component, so that the detection of the change of the capacitive current is inaccurate, and the erroneous judgment problem is easy to occur.
In one embodiment, after evaluating the operational status of the arrester, the method further comprises: and acquiring historical measurement data, evaluating the running state of the lightning arrester according to the current measurement data and the historical measurement data, obtaining the state change trend of the lightning arrester, and predicting the residual service life of the lightning arrester according to the state change trend.
The method comprises the steps of measuring running state data of a current arrester through upper computer software, storing historical measurement data obtained through measurement, analyzing the current measurement data and the historical measurement data to obtain a change trend of the running state data of the arrester, and estimating the service life of the arrester according to the change trend of a measured state quantity.
In the embodiment, the service life of the lightning arrester is estimated by comparing with the historical data, the running state of the lightning arrester is estimated, and the accuracy of the running state detection of the lightning arrester is improved.
Fig. 2 is an overall flow chart of a method for detecting an operating state of an arrester according to an embodiment of the present application, as shown in fig. 2, the detection of the present application includes two parts, one part is leakage current measurement of the arrester, the other part is terminal voltage measurement of the arrester, after the leakage current and terminal voltage are measured in indirect electrical contact, the collected current and voltage signals are processed, the electrical signals are converted into optical signals for optical fiber transmission, the optical signals are converted into electrical signals for output after transmission, the collected signals are preprocessed, data are read, and the state detection and evaluation of the arrester are performed according to the data.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a lightning arrester operation state detection system for realizing the lightning arrester operation state detection method. The implementation of the solution provided by the system is similar to the implementation described in the above method, so the specific limitation in the embodiments of the one or more lightning arrester operation state detection systems provided below may be referred to the limitation of the lightning arrester operation state detection method hereinabove, and will not be repeated here.
In one embodiment, as shown in fig. 3, there is provided an arrester operation state detection system including a measurement module 31, a transmission module 32, an evaluation module 33, wherein,
the measurement module 31 is configured to measure a magnetic field generated by leakage current of the lightning arrester and an induced electric field of the lightning arrester, obtain a leakage current signal of the lightning arrester according to the magnetic field, and obtain a terminal voltage signal of the lightning arrester according to the induced electric field.
And the transmission module 32 is connected with the measurement module 31 and is used for transmitting the leakage current signal and the terminal voltage signal.
And the evaluation module 33 is connected with the transmission module 32 and is used for evaluating the operation state of the lightning arrester according to the leakage current signal and the terminal voltage signal.
In one embodiment, the measurement module 31 includes a fluxgate current sensor, a non-contact voltage measurer, neither of which is electrically connected to the lightning arrester; the fluxgate current sensor is used for measuring a magnetic field generated by leakage current of the lightning arrester and acquiring leakage current signals of the lightning arrester according to the magnetic field; and the non-contact voltage measurer is connected with the fluxgate current sensor in parallel and is used for measuring the induction electric field of the lightning arrester and acquiring a terminal voltage signal of the lightning arrester according to the induction electric field.
The current sensor includes a fluxgate current sensor, such as a phase-shifted pulse ac/dc fluxgate sensor. The non-contact voltage measurer comprises an electric field sensing device of a bipolar plate. In terms of structure, the current sensor and the non-contact voltage measurer are connected in parallel, that is, the measurement module of the embodiment measures the leakage current and the terminal voltage of the lightning arrester simultaneously, that is, the acquisition of two paths of signals is performed simultaneously. After the leakage current signal and the terminal voltage signal are collected, the measurement module 31 processes the signals by using the same microprocessor on the premise that the sampling frequency is high enough.
In addition, when the current sensor and the non-contact voltage measurer of the embodiment measure the current and the voltage, the current sensor and the non-contact voltage measurer do not directly contact the lightning arrester, but indirectly measure the current and the voltage through electromagnetic coupling and electric field coupling.
In this embodiment, the acquisition of the leakage current signal and the terminal voltage signal of the lightning arrester is performed simultaneously, so that the simultaneity of the acquisition of two paths of signals can be ensured under the condition that the sampling frequency is high enough, the accuracy of measuring the voltage phase and the current phase is improved, and the accuracy of detecting the running state of the lightning arrester is further improved. Meanwhile, the same microprocessor is adopted to process the leakage current signals and terminal voltages obtained through measurement, and the comparability between sampling data and the consistency of data output are ensured. In addition, through the current sensor and the non-contact voltage measurer which do not generate direct electrical contact with the electric power system, the current and the voltage are measured, an insulating protection layer on the surface of a wire to be measured is not required to be damaged, the running state of the electric power system is not influenced by the fault of the measuring device, the electric power system can still normally and stably run when the running state of the lightning arrester is detected, and the safety and the stability of the system are improved.
In one embodiment, the transmission module 32 includes: an optical transmitter, a transmission line, an optical receiver, and a signal power controller; the optical transmitter is used for receiving the first electric signal, converting the first electric signal into a first optical signal and outputting the first optical signal. And the transmission line is connected with the optical transmitter and is used for transmitting the first optical signal. And the optical receiver is connected with the transmission line and is used for receiving the first optical signal and converting the first optical signal into a second electric signal.
The transmission module 32 is composed of an optical transmitter, a transmission line, an optical receiver and a signal power controller, does not need an additional optical fiber repeater, and can realize automatic adjustment of optical signal power. The optical transmitter is configured to receive the first electrical signal sent by the measurement module 31, convert the first electrical signal into a first optical signal, and output the first optical signal to the transmission line for transmission. The transmission line transmits the first optical signal to the optical receiver, and the optical receiver converts the first optical signal into a second electrical signal after receiving the first optical signal, wherein the second electrical signal is identical to the initial first electrical signal.
In the embodiment, the electric signal is converted into the optical signal for transmission, so that the transmission speed and the transmission efficiency of the signal are improved, the loss caused in the transmission process is reduced, and the accuracy and the detection efficiency of the lightning arrester running state detection system are improved.
In one embodiment, the transmission module 32 further includes: and the signal power controller is connected with the optical transmitter and the optical receiver and is used for adjusting the amplification factor and the optical power attenuation factor of the optical transmitter according to the first optical signal power received by the optical receiver until the first optical signal power is in the optimal receiving range of the optical receiver.
The signal power controller controls the optical power attenuation multiple of the optical receiver according to the first optical signal power received by the optical receiver, and ensures that the optical signal power received by the optical receiver is within the optimal acceptable range.
In this embodiment, the transmitter is adjusted according to the power of the first optical signal, so as to ensure that the receiver can receive the optimal first optical signal, thereby ensuring the quality of signal transmission and improving the accuracy of the detection of the operating state of the lightning arrester.
In one embodiment, the evaluation module 33 includes: a data preprocessing unit and an evaluation unit; the data preprocessing circuit is connected with the transmission module and used for receiving the second electric signal and converting the second electric signal into a first digital signal. And the evaluation device is connected with the data preprocessing circuit and is used for receiving the first digital signal and evaluating the operation state of the lightning arrester according to the first digital signal.
The data preprocessing circuit is configured to receive the second electrical signal of the lightning arrester output by the transmission module 32, and process the second electrical signal to convert the second electrical signal into a digital electrical signal readable by the evaluation device. The evaluation equipment comprises an upper computer and software, wherein the upper computer is used for reading the first digital signal, the software is used for processing the read first digital signal, processing the current measurement data and comparing the current measurement data with the historical measurement data, and detecting the running state of the lightning arrester and estimating the service life of the lightning arrester are realized.
In the embodiment, the electric signal is converted into the digital signal, so that the signal can be better analyzed, the running state of the lightning arrester is obtained, and the detection efficiency and accuracy of the running state of the lightning arrester are improved.
Fig. 4 is a hardware configuration diagram of a lightning arrester operation state detection system according to an embodiment of the present application, as shown in fig. 4, the system includes: the system comprises a measuring module (lightning arrester signal measuring device), a transmission module (signal transmission device) and an evaluation module (lightning arrester state evaluation device). The measuring module is used for collecting and processing signals, and the signal collecting unit comprises an electric field shielding device, a voltage measuring device, a current sensor and a magnetic field shielding device. The signal processing unit comprises a differential amplifier, a multichannel analog-to-digital converter and a digital signal processing device. The measuring module outputs signals to the transmission module, the transmission module carries out signal transmission through the optical fiber digital transmission system, the signals are output to the evaluation module, the evaluation module receives and converts the signals through the upper computer, data analysis is carried out on the lightning arrester, and the running state of the lightning arrester is visually displayed.
The modules in the lightning arrester operation state detection system can be all or partially realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117949757A (en) * | 2024-01-31 | 2024-04-30 | 四川瑞霆智汇科技有限公司 | Lightning arrester monitoring method and system |
| CN118554626A (en) * | 2024-05-15 | 2024-08-27 | 云南电力试验研究院(集团)有限公司 | A system and method for monitoring leakage current of ultra-low power arrester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117949757A (en) * | 2024-01-31 | 2024-04-30 | 四川瑞霆智汇科技有限公司 | Lightning arrester monitoring method and system |
| CN117949757B (en) * | 2024-01-31 | 2025-02-14 | 四川瑞霆智汇科技有限公司 | Lightning arrester monitoring method and system |
| CN118554626A (en) * | 2024-05-15 | 2024-08-27 | 云南电力试验研究院(集团)有限公司 | A system and method for monitoring leakage current of ultra-low power arrester |
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