CN118033350A - Wireless acquisition and monitoring system and method for operating parameters of lightning arrester - Google Patents
Wireless acquisition and monitoring system and method for operating parameters of lightning arrester Download PDFInfo
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Abstract
The invention discloses a wireless acquisition and monitoring system and method for operating parameters of a lightning arrester, and relates to the technical field of lightning arrester monitoring. To address the problem of predicting the condition of a lightning arrester by monitoring its internal temperature and current data, short current peaks or temperature fluctuations within normal ranges may trigger alarms, leading to unnecessary maintenance or neglecting real problems; the lightning arrester monitoring device is arranged on the lightning arrester, is used for detecting the continuous current and the action times of the lightning arrester on line, and the remote monitoring platform is used for receiving the data of the wireless gateway and analyzing, storing and analyzing the data; the wireless communication module is used for sending data to the wireless gateway, so that wireless acquisition and monitoring of operation parameters of the lightning arrester in the station are realized, digital intelligent state monitoring of the line lightning arrester is conveniently realized, the analysis and judgment capacity of the operation state of the lightning arrester is improved, and powerful support is provided for preventive maintenance and fault treatment.
Description
Technical Field
The invention relates to the technical field of lightning arrester monitoring, in particular to a system and a method for wireless acquisition and monitoring of operating parameters of a lightning arrester.
Background
The lightning arrester is an important device in the power system, and the operation state of the lightning arrester is directly related to the safety and stability of the power system. Now about the lightning arrester monitoring system, the publication number is: CN114236297a discloses an on-line monitoring system for a lightning arrester, which collects current data of a low-voltage grounding end of the lightning arrester and internal temperature data of the lightning arrester in real time, and transmits the internal temperature data and the current data to a data collection and transmission unit, the data collection and transmission unit analyzes the received current data and internal temperature data, and if the internal temperature continuously rises to a temperature threshold value when the lightning arrester thermally collapses after lightning strike or overvoltage is caused, the operation state of the lightning arrester is in fault at the moment.
However, the above patent can realize the whole process operation and maintenance monitoring and the whole life cycle management of the lightning arrester, but still has the following problems:
1. The state of the lightning arrester is predicted mainly by monitoring the internal temperature and current data of the lightning arrester, however, depending on the two parameters, the real state of the lightning arrester cannot be comprehensively reflected, and a short current peak value or temperature fluctuation in a normal range can trigger an alarm, so that unnecessary maintenance is caused or real problems are ignored;
2. The traditional lightning arrester operation parameter monitoring method mainly adopts a wired mode, a large number of cables are required to be laid in the mode, the cost is high, and a communication module in the wired mode needs to be kept in a working state for a long time, so that the energy consumption is further increased.
Disclosure of Invention
The invention aims to provide a wireless acquisition and monitoring system and method for operating parameters of a lightning arrester, which realize digital intelligent state monitoring on the lightning arrester by wireless acquisition and monitoring of the operating parameters of the lightning arrester in a station, improve the analysis and judgment capability of the operating state of the lightning arrester, and provide powerful support for preventive maintenance and fault treatment so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The wireless acquisition and monitoring system for the operation parameters of the lightning arrester comprises a lightning arrester monitoring device, a wireless gateway and a remote monitoring platform, wherein the lightning arrester monitoring device is arranged on the lightning arrester and is used for monitoring the continuous current and the action times of the lightning arrester on line, the wireless gateway is used for receiving monitoring data from at least one lightning arrester monitoring device, processing and forwarding the data, and the remote monitoring platform is used for receiving the monitoring data of the wireless gateway and analyzing, storing and analyzing the data; wherein, arrester monitoring devices includes:
the sensor module is used for collecting operation parameters of the lightning arrester, including continuous current, leakage current and action frequency data;
the processor module is used for processing the operation parameter data acquired by the sensor module, performing digital analysis, and monitoring, classifying and predicting the abnormal data;
the power management module is used for providing stable power supply for the lightning arrester monitoring device and ensuring the stable operation of the lightning arrester monitoring device;
And the wireless communication module is used for constructing a wireless local area network by utilizing a modern LoRa wireless communication technology, and transmitting the data acquired by the sensor module to the wireless gateway based on the wireless local area network.
Further, the sensor module includes:
The leakage current conversion sensor is used for monitoring leakage current signals of the lightning arrester in real time, preprocessing the collected leakage current signals, eliminating noise and interference, converting the processed current signals into electric signals, and performing digital processing on the converted electric signals;
and the action frequency sensor is used for acquiring an electric signal generated by mechanical vibration of the arrester when the arrester acts, and the counting logic circuit counts the electric signal generated by the sensor and records the action frequency of the arrester.
Further, the processor module includes:
The signal acquisition and processing unit is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit, extracting the operation characteristic parameters of the lightning arrester according to the operation characteristics of the lightning arrester, and judging whether the operation state of the lightning arrester is normal or not according to the extracted operation characteristic parameters;
The low-power consumption management unit is used for monitoring the power consumption state of the lightning arrester monitoring device in real time, adjusting the working mode according to the monitoring result, reducing the overall power consumption of the lightning arrester monitoring device and setting a corresponding wake-up mechanism;
And the storage unit is used for receiving the data of the signal acquisition and processing unit, storing the received data in the internal memory, and searching related records and sending the related records to the remote monitoring platform when the data is required to be inquired or transmitted.
Further, the signal acquisition and processing unit includes:
the characteristic parameter extraction module is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit and extracting the operation characteristic parameters of the lightning arrester according to the operation characteristics of the lightning arrester;
The parameter data extraction module is used for extracting current parameter data, voltage parameter data and resistive current parameter data from the operation characteristic parameters of the lightning arrester;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data according to the current parameter data, the voltage parameter data and the resistive current parameter data;
the comparison module is used for comparing the data characteristic index parameter with index parameter thresholds corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data;
The operation evaluation parameter acquisition module is used for acquiring the operation evaluation parameter of the lightning arrester by utilizing the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data exceed the index parameter threshold; wherein the operation evaluation parameter is obtained by the following formula:
；
Wherein P represents an operation evaluation parameter; m represents the total number of collected parameter data types, and the parameter data types comprise current parameter data, voltage parameter data and resistive current parameter data; c maxj represents the data maximum value which occurs corresponding to the j-th parameter data; c yj represents a threshold value corresponding to the j-th parameter data; omega j represents a weight value corresponding to the j-th parameter data; z cj represents the data characteristic index parameter corresponding to the j-th parameter data; z yj represents an index parameter threshold corresponding to the j-th parameter data;
And the operation abnormality initial judging module is used for carrying out an initial abnormality alarm when the operation evaluation parameter is lower than a preset evaluation parameter threshold value and the surface arrester is abnormal.
Further, the data characteristic index parameter obtaining module includes:
the real-time acquisition module is used for acquiring current parameter data, voltage parameter data and resistive current parameter data of the lightning arrester in each unit time in real time; wherein the unit time is 1s;
the constraint condition calling module is used for calling preset constraint conditions;
The condition comparison module is used for comparing the ratio of the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in each unit time and the corresponding threshold value with the abnormal initial judgment constraint condition by utilizing the real-time acquisition to obtain a comparison result;
the real-time judging module is used for judging whether the current parameter data, the voltage parameter data and the resistive current parameter data meet preset abnormal initial judging constraint conditions or not in real time through a comparison result, wherein the abnormal initial judging constraint conditions are as follows:
；
Wherein, C i represents the data value corresponding to the current parameter data, voltage parameter data or resistive current parameter data which are acquired in real time in the ith unit time; f c represents an initial judgment constraint condition; c y denotes a threshold value corresponding to the current parameter data, the voltage parameter data, or the resistive current parameter data; c e represents the theoretical value corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the ideal state; c p represents the average value of the data corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the normal running state of the lightning arrester when the lightning arrester is cut off to the current unit time; λ represents a scaling factor corresponding to current parameter data, voltage parameter data, or resistive current parameter data, and scaling factor λ=0.113 corresponding to current parameter data, and scaling factor λ=0.121 corresponding to voltage parameter data; the proportional adjustment coefficient lambda=0.117 corresponding to the resistive current parameter data;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the relation between any one parameter data of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition.
Further, the data characteristic index parameter obtaining module includes:
The data value calling module is used for calling the data values corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data in the unit time when the relation between any one of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition;
The operation reference coefficient acquisition module is used for calculating and acquiring data operation reference coefficients corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in unit time by utilizing the data values corresponding to each current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester; the data operation reference coefficient is obtained through the following formula:
；
Wherein, F c represents the operation reference coefficient corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data; n represents the number of unit time;
The data characteristic index parameter calculation module is used for obtaining data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data by utilizing data operation reference coefficients corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data, wherein the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data are obtained through the following formula:
；
wherein Z c represents the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data.
Further, the power management module includes:
The self-service energy taking unit is used for acquiring external energy based on a photoelectric effect, and transmitting the acquired external energy to the energy storage unit;
The energy storage unit is used for storing the acquired energy and reasonably distributing and managing the energy according to the requirements of the lightning arrester monitoring device and the state of the energy storage element;
the power supply conversion unit is used for converting the stored energy into voltage and current required by the device according to the requirements and the load conditions of the lightning arrester monitoring device;
and the power supply control unit is used for formulating a reasonable power supply management strategy according to the actual demand of the lightning arrester monitoring device and the current energy storage state, monitoring the power supply state of the lightning arrester monitoring device in real time and the power consumption condition of each module, taking corresponding treatment measures in time when detecting the related faults of the power supply, and sending early warning information in time and notifying a remote monitoring platform based on a wireless gateway when the power supply state approaches or reaches a preset warning threshold value.
Further, the wireless communication module includes:
The LoRa receiving module is used for receiving the LoRa signal from the wireless gateway, decoding and demodulating the received signal, converting the decoded and demodulated LoRa signal into a processable data stream, and extracting target data from the decoded data stream;
The data processing module is used for formatting the target data to enable the target data to accord with unified standards and standards, analyzing the formatted data according to preset protocols and standards, extracting key information, and storing the analyzed data in the internal memory;
And the database module is used for storing the processed data in a database, storing and managing the data, and maintaining and managing the data in the database.
Further, the wireless gateway processes and forwards data, specifically:
monitoring signals from the lightning arrester monitoring device in real time, decoding and analyzing the signals, and extracting effective data;
Cleaning and converting the effective data according to preset rules and formats, and simultaneously compressing the data according to the requirements;
and packaging the processed effective data according to a communication protocol with the remote monitoring platform and sending the processed effective data to the remote monitoring platform.
Further, the remote monitoring platform analyzes, stores and analyzes the data, specifically:
establishing communication connection with a wireless gateway, extracting historical data consistent with IP data of the lightning arrester monitoring device, and acquiring historical operation parameters of the lightning arrester monitoring device based on the historical data;
Analyzing the operation characteristics and the operation state of the lightning arrester monitoring device based on the historical operation parameters, acquiring an analysis result, and determining the operation mode and the corresponding target operation characteristics of the lightning arrester monitoring device based on the analysis result;
Generating a response code corresponding to the target operation characteristic, judging abnormal data based on the response code, performing early warning based on an abnormal result, and generating a corresponding analysis report and a corresponding suggested measure.
The invention provides another technical scheme, a wireless acquisition and monitoring method for operating parameters of a lightning arrester, which comprises the following steps:
Step one: the lightning arrester monitoring device detects the continuous current and the action times of the lightning arrester on line in real time, and sends the acquired data to the wireless gateway;
Step two: the wireless gateway receives data from the plurality of lightning arrester monitoring devices, and processes and forwards the received data;
Step three: the remote monitoring platform receives data from the wireless gateway and analyzes, stores and analyzes the data;
step four: judging the running state of the lightning arrester according to the analysis result, and generating corresponding early warning or alarm information.
Compared with the prior art, the invention has the beneficial effects that:
The lightning arrester monitoring device can realize the on-line detection of continuous current and action times of the lightning arrester, and transmits data to the wireless gateway through the wireless communication module, a wireless local area network is constructed by utilizing the LoRa wireless communication technology, wireless acquisition and monitoring of operation parameters of the lightning arrester in a station are realized, digital intelligent state monitoring of the line lightning arrester is conveniently realized, digital transformation of the wireless monitoring of the lightning arrester is realized, analysis and judgment capability of the operation state of the lightning arrester are improved, and powerful support is provided for preventive maintenance and fault treatment.
Drawings
FIG. 1 is a topology diagram of a wireless acquisition and monitoring system for operating parameters of a lightning arrester according to the present invention;
FIG. 2 is a block diagram of an arrester monitoring device according to the present invention;
Fig. 3 is an isometric view of a surge arrester monitoring device of the present invention;
Fig. 4 is a schematic view of the installation of the lightning arrester monitoring device of the present invention.
In the figure: 1. a lightning arrester monitoring device; 2. a line arrester; 3. a suspension mechanism; 4. a cantilever; 5. an insulator string; 6. a power transmission line; 7. and (5) hanging the wire clamps.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problem that the state of the lightning arrester is predicted by monitoring the internal temperature and current data, a short current peak value or temperature fluctuation in a normal range may trigger an alarm, so that unnecessary maintenance is caused or a real problem is ignored, referring to fig. 1-4, the following technical scheme is provided in the embodiment:
The wireless acquisition and monitoring system for the operation parameters of the lightning arrester comprises a lightning arrester monitoring device 1, a wireless gateway and a remote monitoring platform, wherein a high weather-proof sealing protective shell is adopted for the shell of the lightning arrester monitoring device 1, a communication module adopts high anti-interference LoRa wireless communication and corresponding antennas, the lightning arrester monitoring device 1 is installed on a line lightning arrester 2, the line lightning arrester 2 is installed at the lower end of a cantilever 4 through a hanging mechanism 3, an insulator chain 5 is installed on one side of the cantilever 4, a power transmission line 6 is installed at the lower end of the insulator chain 5, the lower end of the line lightning arrester 2 is connected with the power transmission line 6 through a hanging wire clamp 7, the lightning arrester monitoring device 1 is used for monitoring the continuous current and the action times of the lightning arrester on line, the wireless gateway is used for receiving monitoring data from at least one lightning arrester monitoring device 1, processing and forwarding the data, and the remote monitoring platform is used for receiving the monitoring data of the wireless gateway, analyzing, storing and analyzing the data; wherein, arrester monitoring device 1 includes:
the sensor module is used for collecting operation parameters of the lightning arrester, including continuous current, leakage current and action frequency data;
In this embodiment, the sensor module includes:
The leakage current conversion sensor is used for monitoring leakage current signals of the lightning arrester in real time, the leakage current can reflect the insulation condition of the lightning arrester, the collected leakage current signals need to be preprocessed, noise and interference are eliminated, the processed current signals are converted into electric signals, and the converted electric signals are subjected to digital processing so as to facilitate subsequent storage, transmission and analysis;
In this embodiment, the magnetoresistive effect sensor can convert the magnetic field change into a change of a resistance value, so as to detect a weak current signal, the preprocessing is implemented by using circuit elements such as a filter, an amplifier and the like, the filter is used for eliminating high-frequency noise, and the amplifier is used for adjusting the signal amplitude so as to be more suitable for subsequent processing; this is achieved by converting the current signal into a voltage signal through a known resistor, the conversion formula being:
v=i×r, where V is represented as an output voltage, I is represented as an input current, and R is represented as a resistance value;
The action frequency sensor is used for acquiring an electric signal generated by mechanical vibration of the arrester when the arrester acts, and the counting logic circuit counts the electric signal generated by the sensor and records the action frequency of the arrester;
In the embodiment, the leakage current transformation sensor can accurately and reliably convert the continuous current of the lightning arrester into an electric signal, further extract useful information, the action frequency sensor can accurately record the action frequency of the lightning arrester, send data to a remote monitoring platform for further processing and analysis, provide a data base for evaluating the performance and predicting faults of the lightning arrester, further process and analyze the digitalized data, extract the useful information, and obtain the running state and performance parameters of the lightning arrester, including calculating the effective value of the current, analyzing the waveform and the like;
the processor module is used for processing the operation parameter data acquired by the sensor module, performing digital analysis, and monitoring, classifying and predicting the abnormal data;
The power management module is used for providing stable power supply for the lightning arrester monitoring device 1 and ensuring the stable operation of the lightning arrester monitoring device 1;
The wireless communication module is used for constructing a wireless local area network by utilizing a modern LoRa wireless communication technology, and transmitting the data acquired by the sensor module to the wireless gateway based on the wireless local area network;
In this embodiment, the wireless gateway processes and forwards data, specifically:
The signal from the lightning arrester monitoring device 1 is monitored in real time, and is decoded and analyzed to extract effective data;
Cleaning and format conversion are carried out on the effective data according to preset rules and formats, so that the accuracy and consistency of the data are ensured; meanwhile, data compression is carried out according to the requirement so as to reduce the transmitted data volume;
according to a communication protocol with the remote monitoring platform, the processed effective data are packed and sent to the remote monitoring platform;
in this embodiment, the remote monitoring platform analyzes, stores and analyzes the data, specifically:
Establishing communication connection with a wireless gateway, extracting historical data consistent with IP data of the lightning arrester monitoring device 1, and acquiring historical operation parameters of the lightning arrester monitoring device 1 based on the historical data;
analyzing the operation characteristics and the operation state of the lightning arrester monitoring device 1 based on the historical operation parameters, acquiring an analysis result, and determining the operation mode and the corresponding target operation characteristics of the lightning arrester monitoring device 1 based on the analysis result;
Generating a response code corresponding to the target operation characteristic, judging abnormal data based on the response code, performing early warning based on an abnormal result, and generating a corresponding analysis report and a corresponding suggested measure.
In this embodiment, the on-line detection to arrester continuous current and action number can be realized through arrester monitoring devices to send data to wireless gateway through wireless communication module, utilize the wireless LAN of loRa wireless communication technique construction, realize the wireless collection and the monitoring to the arrester operating parameter in the station, be convenient for realize digital intelligent state monitoring to circuit arrester 2, realize the digital transformation to arrester wireless monitoring, improve the analysis and the judgement ability to arrester operating condition, provide powerful support for preventive maintenance and fault handling.
In this embodiment, the processor module includes:
The signal acquisition and processing unit is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit, extracting operation characteristic parameters of the lightning arrester, such as effective values, waveform characteristics and the like of continuous current according to the operation characteristic of the lightning arrester, judging whether the operation state of the lightning arrester is normal or not according to the extracted operation characteristic parameters, and detecting abnormal conditions such as overload or short circuit and the like by comparing the actual current value with a preset threshold value;
the low-power consumption management unit is used for monitoring the power consumption state of the lightning arrester monitoring device 1 in real time, including the power consumption condition of each module, adjusting the working mode according to the monitoring result, reducing the overall power consumption of the lightning arrester monitoring device 1, ensuring that the energy consumption of the lightning arrester monitoring device 1 is lower in a long-time working state, for example, when data acquisition is not needed, the lightning arrester monitoring device can enter a low-power consumption sleep mode, and closing unnecessary peripheral equipment and the like; after the data transmission is completed, the wireless communication module is closed to reduce the power consumption, and a corresponding wake-up mechanism is set to ensure that the device can wake up in time and recover the normal working state when the data is required to be collected or other tasks are executed;
The storage unit is used for receiving the data of the signal acquisition and processing unit, storing the received data in the internal memory, including storing the operation parameters of the lightning arrester and related data, including environmental data, equipment state data fault data and the like, and searching related records and sending the related records to the remote monitoring platform when the data is required to be inquired or transmitted.
In this embodiment, the signal collecting and processing unit can accurately extract the operation parameters of the lightning arrester from the electrical signals output by the sensor module, and judge the state of the lightning arrester, the low-power consumption management unit can effectively reduce the energy consumption of the lightning arrester monitoring device, prolong the working time and service life of the lightning arrester monitoring device, and the storage unit can safely and reliably store the operation parameters and related data of the lightning arrester, thereby providing powerful support for subsequent data analysis, fault diagnosis and remote monitoring.
Specifically, the signal acquisition and processing unit includes:
the characteristic parameter extraction module is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit and extracting the operation characteristic parameters of the lightning arrester according to the operation characteristics of the lightning arrester;
The parameter data extraction module is used for extracting current parameter data, voltage parameter data and resistive current parameter data from the operation characteristic parameters of the lightning arrester;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data according to the current parameter data, the voltage parameter data and the resistive current parameter data;
the comparison module is used for comparing the data characteristic index parameter with index parameter thresholds corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data;
The operation evaluation parameter acquisition module is used for acquiring the operation evaluation parameter of the lightning arrester by utilizing the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data exceed the index parameter threshold; wherein the operation evaluation parameter is obtained by the following formula:
；
Wherein P represents an operation evaluation parameter; m represents the total number of collected parameter data types, and the parameter data types comprise current parameter data, voltage parameter data and resistive current parameter data; c maxj represents the data maximum value which occurs corresponding to the j-th parameter data; c yj represents a threshold value corresponding to the j-th parameter data; omega j represents a weight value corresponding to the j-th parameter data; z cj represents the data characteristic index parameter corresponding to the j-th parameter data; z yj represents an index parameter threshold corresponding to the j-th parameter data;
And the operation abnormality initial judging module is used for carrying out an initial abnormality alarm when the operation evaluation parameter is lower than a preset evaluation parameter threshold value and the surface arrester is abnormal.
The technical effects of the technical scheme are as follows: through the characteristic parameter extraction module, the technical scheme can acquire the operation characteristic parameters of the lightning arrester in real time, including current, voltage, resistive current and the like. The parameter data extraction module further extracts key current, voltage and resistive current parameter data from the characteristic parameters, and provides basic data for subsequent data processing and analysis. The data characteristic index parameter acquisition module calculates corresponding data characteristic index parameters according to current, voltage and resistive current parameter data by using a specific formula. The parameter indexes can reflect the operation state of the lightning arrester more comprehensively, and provide basis for abnormality detection and operation evaluation. And the comparison module compares the data characteristic index parameter with a preset index parameter threshold value and judges whether the running state of the lightning arrester is normal or not. When the operation evaluation parameters exceed the corresponding threshold values, the operation evaluation parameter acquisition module can acquire the operation evaluation parameters of the lightning arrester by using the parameters, and further evaluate the operation state of the lightning arrester.
According to the technical scheme, through the preset modularized design, automatic acquisition, processing, analysis and evaluation of the operation data of the lightning arrester are realized. Meanwhile, through the application of an intelligent algorithm, trend prediction and fault early warning can be performed based on historical data and real-time data, and monitoring efficiency and accuracy are improved. Meanwhile, the technical scheme adopts a modularized design, so that abnormal initial judgment can be carried out before the lightning arrester really breaks down, and further the complexity and the fault rate of the system are effectively reduced. Meanwhile, the influence of external interference and abnormal data can be effectively eliminated by comparing and evaluating the preset index parameter threshold value, and the reliability of the monitoring result is improved.
In summary, the technical scheme provides an efficient, accurate and reliable lightning arrester operation state monitoring method, which is beneficial to timely finding potential problems of the lightning arrester and guaranteeing stable operation of a power system.
Specifically, the data characteristic index parameter acquisition module includes:
the real-time acquisition module is used for acquiring current parameter data, voltage parameter data and resistive current parameter data of the lightning arrester in each unit time in real time; wherein the unit time is 1s;
the constraint condition calling module is used for calling preset constraint conditions;
The condition comparison module is used for comparing the ratio of the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in each unit time and the corresponding threshold value with the abnormal initial judgment constraint condition by utilizing the real-time acquisition to obtain a comparison result;
the real-time judging module is used for judging whether the current parameter data, the voltage parameter data and the resistive current parameter data meet preset abnormal initial judging constraint conditions or not in real time through a comparison result, wherein the abnormal initial judging constraint conditions are as follows:
；
Wherein, C i represents the data value corresponding to the current parameter data, voltage parameter data or resistive current parameter data which are acquired in real time in the ith unit time; f c represents an initial judgment constraint condition; c y denotes a threshold value corresponding to the current parameter data, the voltage parameter data, or the resistive current parameter data; c e represents the theoretical value corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the ideal state; c p represents the average value of the data corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the normal running state of the lightning arrester when the lightning arrester is cut off to the current unit time; λ represents a scaling factor corresponding to current parameter data, voltage parameter data, or resistive current parameter data, and scaling factor λ=0.113 corresponding to current parameter data, and scaling factor λ=0.121 corresponding to voltage parameter data; the proportional adjustment coefficient lambda=0.117 corresponding to the resistive current parameter data;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the relation between any one parameter data of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition.
The technical effects of the technical scheme are as follows: according to the technical scheme, the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in each unit time can be collected in real time. The real-time acquisition mode is helpful for timely finding out abnormal operation of the lightning arrester, and accuracy and reliability of monitoring are improved. Whether the running state of the lightning arrester is normal can be primarily judged by judging whether the current parameter data, the voltage parameter data and the resistive current parameter data meet preset abnormal initial judgment constraint conditions in real time. The setting of the constraint condition is helpful for eliminating fluctuation and interference in a normal range and improving the accuracy of abnormality detection. When the relation between any one parameter data of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition, the module can acquire the corresponding data characteristic index parameters. These characteristic index parameters can more fully reflect the operational status of the arrester. The above-mentioned embodiments introduce a scaling factor λ, which is scaled differently according to different parameter types (current, voltage, resistive current). The proportion adjustment can be better adapted to the characteristics of different types of parameters, and the accuracy and the adaptability of data processing are improved. The data processing and analysis can be automatically carried out through a preset abnormal initial judgment constraint condition and a data characteristic index parameter calculation formula, so that the intelligent monitoring of the running state of the lightning arrester is realized. The automatic and intelligent mode can greatly improve the monitoring efficiency and accuracy, and reduce the possibility of manual intervention and misjudgment.
In summary, the data characteristic index parameter acquisition module in the technical scheme provides a real-time, accurate and automatic lightning arrester running state monitoring method, is beneficial to timely finding potential problems of the lightning arrester, and provides powerful support for subsequent fault diagnosis and repair.
Specifically, the data characteristic index parameter obtaining module includes:
The data value calling module is used for calling the data values corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data in the unit time when the relation between any one of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition;
The operation reference coefficient acquisition module is used for calculating and acquiring data operation reference coefficients corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in unit time by utilizing the data values corresponding to each current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester; the data operation reference coefficient is obtained through the following formula:
；
Wherein, F c represents the operation reference coefficient corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data; n represents the number of unit time;
The data characteristic index parameter calculation module is used for obtaining data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data by utilizing data operation reference coefficients corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data, wherein the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data are obtained through the following formula:
；
wherein Z c represents the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data.
The technical effects of the technical scheme are as follows: when the relation between any one parameter data of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition, the data value calling module can call the data values corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in unit time. The retrieval mechanism ensures that the acquired data has representativeness and real-time property, and provides basic data for subsequent data processing and analysis. The operation reference coefficient acquisition module calculates and acquires all data operation reference coefficients corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in unit time by using the data values corresponding to each current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester. The calculation of the reference coefficient can provide a reference basis for the subsequent data characteristic index parameters, and is helpful for more accurately reflecting the operation state of the lightning arrester.
The data characteristic index parameter calculation module obtains corresponding data characteristic index parameters by utilizing data operation reference coefficients corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data. The characteristic index parameters are calculated through a specific formula, so that the operation state of the lightning arrester can be reflected more comprehensively. The module can automatically process and analyze data through a preset formula and algorithm, and intelligent monitoring of the running state of the lightning arrester is realized. The automatic and intelligent mode can greatly improve the monitoring efficiency and accuracy, and reduce the possibility of manual intervention and misjudgment.
In summary, the data characteristic index parameter acquisition module in the technical scheme provides a real-time, accurate and automatic lightning arrester running state monitoring method, is beneficial to timely finding potential problems of the lightning arrester, and provides powerful support for subsequent fault diagnosis and repair.
In this embodiment, the power management module includes:
the self-service energy taking unit is used for acquiring external energy such as solar energy, wind energy and the like based on a photoelectric effect, transmitting the acquired external energy to the energy storage unit through a mobile phone, converting sunlight into electric energy by using a solar panel or converting wind power into electric energy by using a wind driven generator, and the self-service energy taking unit also has an energy adjusting function so as to adapt to energy output under different illumination and wind power conditions;
The energy storage unit is used for storing the acquired energy, such as a lithium battery, a super capacitor and the like, and reasonably distributing and managing the energy according to the requirements of the lightning arrester monitoring device 1 and the state of the energy storage element;
The power supply conversion unit is used for converting stored energy into voltage and current required by the lightning arrester monitoring device 1 according to the requirement and load condition of the lightning arrester monitoring device 1, limiting output current according to the maximum load capacity of the lightning arrester monitoring device 1 so as to ensure that the device cannot be overloaded, setting a proper protection mechanism in the power supply conversion process so as to prevent damage to the device caused by abnormal conditions such as overvoltage and overcurrent, and automatically cutting off output or reducing voltage when the output voltage is too high;
The power control unit is configured to formulate a reasonable power management policy according to the actual requirement and the current energy storage state of the lightning arrester monitoring device 1, for example, allow maximum power output when the energy is sufficient, reduce power or limit certain functions to be used to prolong the running time when the energy is insufficient, monitor the power state of the lightning arrester monitoring device 1 in real time, including parameters such as voltage, current, power and the like, and the power consumption condition of each module, when detecting the related faults of the power source, such as overvoltage, overcurrent or energy exhaustion, etc., timely take corresponding processing measures, and timely send out early warning information and notify the remote monitoring platform based on the wireless gateway when the power state approaches or reaches the preset warning threshold.
In this embodiment, the self-service energy-taking unit can collect renewable energy effectively from the environment, provide continuous electric energy supply for the device, the energy storage unit can effectively manage energy storage and release, ensure that the device can obtain stable electric energy supply under any condition, the power conversion unit can convert stored energy into voltage and current required by the device, meet the requirements of normal operation of the device, and the power control unit controls the power supply of the device, and ensures the normal operation of the device.
In this embodiment, the wireless communication module includes:
The LoRa receiving module is used for receiving the LoRa signal from the wireless gateway, wherein the LoRa signal comprises the action times of the lightning arrester, time stamp information and IP data of the lightning arrester monitoring device 1, decoding and demodulating the received signal, converting the decoded and demodulated LoRa signal into a processable data stream, and extracting target data such as the action times of the lightning arrester, the time stamp and the like from the decoded data stream;
The data processing module is used for formatting the target data to enable the target data to meet unified standards and standards, including operations such as data verification, error correction and standardization, analyzing the formatted data according to preset protocols and standards, extracting key information such as analysis time stamps, action times and other parameters, and storing the analyzed data in the internal memory for subsequent data analysis and state monitoring;
the database module is used for storing the processed data in a database, optimizing the inquiring and managing efficiency of the data by using proper table structures and indexes, storing and managing the data so as to facilitate subsequent data analysis and state monitoring, maintaining and managing the data in the database, including operations such as data backup, recovery, updating and deleting, and the like, and ensuring the integrity and reliability of the data.
The invention provides a wireless acquisition and monitoring method for operating parameters of a lightning arrester, which comprises the following steps:
Step one: the lightning arrester monitoring device 1 detects the continuous current and the action times of the lightning arrester on line in real time and sends the acquired data to the wireless gateway, wherein the continuous current represents the current load of the lightning arrester under the normal working condition, the action times reflect the use frequency and the possible aging degree of the lightning arrester, and the continuous current and the action times are sent to the wireless gateway through the wireless communication module, so that the real-time performance and the accuracy of the data are ensured, and a foundation is provided for the follow-up monitoring and analysis;
Step two: the wireless gateway receives the data from the plurality of lightning arrester monitoring devices 1, processes and forwards the received data, ensures the reliable transmission of the data, and enables the remote monitoring platform to obtain real-time data from each lightning arrester;
Step three: the remote monitoring platform receives data from the wireless gateway, analyzes, stores and analyzes the data, evaluates and predicts the running state of the lightning arrester, judges the performance reduction or aging degree of the lightning arrester, and predicts the maintenance requirement and potential faults of the lightning arrester;
Step four: judging the running state of the lightning arrester according to the analysis result, generating corresponding early warning or alarm information, automatically triggering the early warning or alarm information based on a preset threshold value and a preset condition, and informing an administrator to immediately take action to prevent further damage or accident occurrence so that the administrator can quickly respond and take appropriate measures.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (11)
1. The utility model provides a arrester operating parameter wireless acquisition and monitoring system, includes arrester monitoring devices (1), wireless gateway and remote monitoring platform, its characterized in that: the lightning arrester monitoring device (1) is arranged on the lightning arrester and used for monitoring the continuous current and the action times of the lightning arrester on line, the wireless gateway is used for receiving monitoring data from at least one lightning arrester monitoring device (1), processing and forwarding the data, and the remote monitoring platform is used for receiving the monitoring data of the wireless gateway and analyzing, storing and analyzing the data; wherein, arrester monitoring device (1) includes:
the sensor module is used for collecting operation parameters of the lightning arrester, including continuous current, leakage current and action frequency data;
the processor module is used for processing the operation parameter data acquired by the sensor module, performing digital analysis, and monitoring, classifying and predicting the abnormal data;
the power management module is used for providing stable power supply for the lightning arrester monitoring device (1) and ensuring the stable operation of the lightning arrester monitoring device (1);
And the wireless communication module is used for constructing a wireless local area network by utilizing a modern LoRa wireless communication technology, and transmitting the data acquired by the sensor module to the wireless gateway based on the wireless local area network.
2. A lightning arrester operating parameter wireless acquisition and monitoring system as set forth in claim 1, wherein: a sensor module, comprising:
The leakage current conversion sensor is used for monitoring leakage current signals of the lightning arrester in real time, preprocessing the collected leakage current signals, eliminating noise and interference, converting the processed current signals into electric signals, and performing digital processing on the converted electric signals;
and the action frequency sensor is used for acquiring an electric signal generated by mechanical vibration of the arrester when the arrester acts, and the counting logic circuit counts the electric signal generated by the sensor and records the action frequency of the arrester.
3. A lightning arrester operating parameter wireless acquisition and monitoring system as defined in claim 2, wherein: a processor module, comprising:
The signal acquisition and processing unit is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit, extracting the operation characteristic parameters of the lightning arrester according to the operation characteristics of the lightning arrester, and judging whether the operation state of the lightning arrester is normal or not according to the extracted operation characteristic parameters;
The low-power consumption management unit is used for monitoring the power consumption state of the lightning arrester monitoring device (1) in real time, adjusting the working mode according to the monitoring result, reducing the overall power consumption of the lightning arrester monitoring device (1), and setting a corresponding wake-up mechanism;
And the storage unit is used for receiving the data of the signal acquisition and processing unit, storing the received data in the internal memory, and searching related records and sending the related records to the remote monitoring platform when the data is required to be inquired or transmitted.
4. A lightning arrester operating parameter wireless acquisition and monitoring system as defined in claim 2, wherein: a signal acquisition and processing unit comprising:
the characteristic parameter extraction module is used for acquiring and processing the electric signals output by the sensor module based on the interface circuit and extracting the operation characteristic parameters of the lightning arrester according to the operation characteristics of the lightning arrester;
The parameter data extraction module is used for extracting current parameter data, voltage parameter data and resistive current parameter data from the operation characteristic parameters of the lightning arrester;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data according to the current parameter data, the voltage parameter data and the resistive current parameter data;
the comparison module is used for comparing the data characteristic index parameter with index parameter thresholds corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data;
The operation evaluation parameter acquisition module is used for acquiring the operation evaluation parameter of the lightning arrester by utilizing the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data exceed the index parameter threshold; wherein the operation evaluation parameter is obtained by the following formula:
；
Wherein P represents an operation evaluation parameter; m represents the total number of collected parameter data types, and the parameter data types comprise current parameter data, voltage parameter data and resistive current parameter data; c maxj represents the data maximum value which occurs corresponding to the j-th parameter data; c yj represents a threshold value corresponding to the j-th parameter data; omega j represents a weight value corresponding to the j-th parameter data; z cj represents the data characteristic index parameter corresponding to the j-th parameter data; z yj represents an index parameter threshold corresponding to the j-th parameter data;
And the operation abnormality initial judging module is used for carrying out an initial abnormality alarm when the operation evaluation parameter is lower than a preset evaluation parameter threshold value and the surface arrester is abnormal.
5. A lightning arrester operating parameter wireless acquisition and monitoring system as defined in claim 2, wherein: the data characteristic index parameter acquisition module comprises:
the real-time acquisition module is used for acquiring current parameter data, voltage parameter data and resistive current parameter data of the lightning arrester in each unit time in real time; wherein the unit time is 1s;
the constraint condition calling module is used for calling preset constraint conditions;
The condition comparison module is used for comparing the ratio of the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in each unit time and the corresponding threshold value with the abnormal initial judgment constraint condition by utilizing the real-time acquisition to obtain a comparison result;
the real-time judging module is used for judging whether the current parameter data, the voltage parameter data and the resistive current parameter data meet preset abnormal initial judging constraint conditions or not in real time through a comparison result, wherein the abnormal initial judging constraint conditions are as follows:
；
Wherein, C i represents the data value corresponding to the current parameter data, voltage parameter data or resistive current parameter data which are acquired in real time in the ith unit time; f c represents an initial judgment constraint condition; c y denotes a threshold value corresponding to the current parameter data, the voltage parameter data, or the resistive current parameter data; c e represents the theoretical value corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the ideal state; c p represents the average value of the data corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data in the normal running state of the lightning arrester when the lightning arrester is cut off to the current unit time; λ represents a scaling factor corresponding to current parameter data, voltage parameter data, or resistive current parameter data, and scaling factor λ=0.113 corresponding to current parameter data, and scaling factor λ=0.121 corresponding to voltage parameter data; the proportional adjustment coefficient lambda=0.117 corresponding to the resistive current parameter data;
The data characteristic index parameter acquisition module is used for acquiring data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data when the relation between any one parameter data of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition.
6. A lightning arrester operating parameter wireless acquisition and monitoring system as defined in claim 2, wherein: the data characteristic index parameter acquisition module comprises:
The data value calling module is used for calling the data values corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data in the unit time when the relation between any one of the current parameter data, the voltage parameter data and the resistive current parameter data and the parameter data meets the abnormal initial judgment constraint condition;
The operation reference coefficient acquisition module is used for calculating and acquiring data operation reference coefficients corresponding to all the current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester in unit time by utilizing the data values corresponding to each current parameter data, the voltage parameter data and the resistive current parameter data of the lightning arrester; the data operation reference coefficient is obtained through the following formula:
；
Wherein, F c represents the operation reference coefficient corresponding to the current parameter data, the voltage parameter data or the resistive current parameter data; n represents the number of unit time;
The data characteristic index parameter calculation module is used for obtaining data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data by utilizing data operation reference coefficients corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data, wherein the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data are obtained through the following formula:
；
wherein Z c represents the data characteristic index parameters corresponding to the current parameter data, the voltage parameter data and the resistive current parameter data.
7. A lightning arrester operating parameter wireless acquisition and monitoring system according to claim 3, wherein: a power management module, comprising:
The self-service energy taking unit is used for acquiring external energy based on a photoelectric effect, and transmitting the acquired external energy to the energy storage unit;
The energy storage unit is used for storing the acquired energy and reasonably distributing and managing the energy according to the requirements of the lightning arrester monitoring device (1) and the state of the energy storage element;
The power supply conversion unit is used for converting the stored energy into voltage and current required by the device according to the requirements and the load conditions of the lightning arrester monitoring device (1);
The power control unit is used for formulating a reasonable power management strategy according to the actual demand of the lightning arrester monitoring device (1) and the current energy storage state, monitoring the power state of the lightning arrester monitoring device (1) in real time and the power consumption condition of each module, taking corresponding treatment measures in time when detecting the related faults of the power supply, and sending early warning information in time and notifying a remote monitoring platform based on a wireless gateway when the power state approaches or reaches a preset warning threshold value.
8. A lightning arrester operating parameter wireless acquisition and monitoring system according to claim 7, wherein: a wireless communication module, comprising:
The LoRa receiving module is used for receiving the LoRa signal from the wireless gateway, decoding and demodulating the received signal, converting the decoded and demodulated LoRa signal into a processable data stream, and extracting target data from the decoded data stream;
The data processing module is used for formatting the target data to enable the target data to accord with unified standards and standards, analyzing the formatted data according to preset protocols and standards, extracting key information, and storing the analyzed data in the internal memory;
And the database module is used for storing the processed data in a database, storing and managing the data, and maintaining and managing the data in the database.
9. A lightning arrester operating parameter wireless acquisition and monitoring system as set forth in claim 5, wherein: the wireless gateway processes and forwards data, and specifically comprises the following steps:
monitoring signals from the lightning arrester monitoring device (1) in real time, decoding and analyzing the signals, and extracting effective data;
Cleaning and converting the effective data according to preset rules and formats, and simultaneously compressing the data according to the requirements;
and packaging the processed effective data according to a communication protocol with the remote monitoring platform and sending the processed effective data to the remote monitoring platform.
10. A lightning arrester operating parameter wireless acquisition and monitoring system according to claim 9, wherein: the remote monitoring platform analyzes, stores and analyzes the data, and specifically comprises the following steps:
establishing communication connection with a wireless gateway, extracting historical data consistent with IP data of the lightning arrester monitoring device (1), and acquiring historical operation parameters of the lightning arrester monitoring device (1) based on the historical data;
Analyzing the operation characteristics and the operation state of the lightning arrester monitoring device (1) based on the historical operation parameters, acquiring an analysis result, and determining the operation mode and the corresponding target operation characteristics of the lightning arrester monitoring device (1) based on the analysis result;
Generating a response code corresponding to the target operation characteristic, judging abnormal data based on the response code, performing early warning based on an abnormal result, and generating a corresponding analysis report and a corresponding suggested measure.
11. A method for wireless acquisition and monitoring of operational parameters of an arrester, based on the implementation of the wireless acquisition and monitoring system of operational parameters of an arrester according to claim 7, characterized in that: the method comprises the following steps:
Step one: the lightning arrester monitoring device (1) detects the continuous current and the action times of the lightning arrester on line in real time, and sends the acquired data to the wireless gateway;
Step two: the wireless gateway receives data from a plurality of lightning arrester monitoring devices (1), and processes and forwards the received data;
Step three: the remote monitoring platform receives data from the wireless gateway and analyzes, stores and analyzes the data;
step four: judging the running state of the lightning arrester according to the analysis result, and generating corresponding early warning or alarm information.
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