A device state monitoring system and method applied to a surge protector

Abstract

The application discloses a kind of equipment state monitoring system and method applied to surge protector, it is related to equipment state monitoring technical field, including the abnormal degree of analysis of decommissioned surge protector equipment protection level, get marked surge protector;The historical equipment monitoring record of surge protector is obtained, the reference value of marked surge protector to the surge protector in current period is analyzed, and reference surge protector is obtained;According to the historical equipment monitoring record of reference surge protector, determine characteristic surge protector, the protection level of characteristic surge protector is abnormally determined, and target abnormal data is obtained;Target abnormal data is sent to staff by monitoring platform, and staff is prompted to carry out safety treatment to surge protector, not only improve the accuracy of surge protector equipment state monitoring, also greatly reduce the risk of explosion and other safety accidents in the field of petrochemical industry environment.

Description

Technical Field

[0001] This invention relates to the field of equipment condition monitoring technology, specifically to an equipment condition monitoring system and method applied to surge protectors. Background Technology

[0002] In explosive environments such as petrochemical plants, flammable and explosive gases, vapors, and dust are abundant. However, due to production needs, the use of electrical equipment is unavoidable. During use, these electrical devices may experience instantaneous high-voltage surges due to lightning strikes or operational overvoltages. If these surges are not properly channeled, they can easily cause breakdowns, generating electrical sparks or localized high temperatures within the electrical equipment, thus becoming ignition sources and causing massive fires or explosions. To address these issues, surge protectors (SPDs) have become essential and critical devices. SPDs provide a controlled, low-impedance path to ground for these abnormally high-energy surges, clamping the overvoltage to a safe level that the equipment can withstand within a very short time, thereby fundamentally eliminating the possibility of surges becoming ignition sources.

[0003] Currently, surge protector status monitoring mainly relies on manual inspections and basic electrical checks. However, manual inspections are unreliable, and basic electrical checks cannot provide timely warnings. Furthermore, surge protectors are consumable protection devices; each surge impact causes a slight change in the protection level of the surge protector, resulting in an irreversible decline. Surge impacts also accumulate, causing structural damage to the internal components of the surge protector and rendering the monitoring parameters completely ineffective. Therefore, obtaining truly valuable reference data for surge protectors is crucial in determining their protection level. However, other surge protectors are not used at the same time or in the same environment, and even their historical data spans are inconsistent. Conventional methods cannot accurately obtain valuable reference data for other surge protectors, leading to inaccurate reference data for the current period. This not only affects the ability to judge the protection level of surge protectors but may also result in misjudgments, allowing surge protectors with no protection capability to be used normally in fields such as petrochemicals, potentially leading to explosions and other safety accidents. Summary of the Invention

[0004] The purpose of this invention is to provide a device condition monitoring system and method for surge protectors, in order to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for monitoring the status of equipment applied to surge protectors, the method comprising: Step S1: Obtain laboratory test records, historical equipment monitoring records, and protection setting data of the decommissioned surge protectors; analyze the degree of abnormality in the equipment protection level of the decommissioned surge protectors; and obtain the marked surge protectors. Step S2: Obtain historical equipment monitoring records of surge protectors, construct a local matrix between surge protectors and marked surge protectors, generate a cumulative distance matrix between marked surge protectors and surge protectors based on the local matrix, analyze the reference value of marked surge protectors for surge protectors in the current cycle, and obtain reference surge protectors. Step S3: Based on the historical equipment monitoring records of the reference surge protector, identify the characteristic surge protector, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data; Step S4: Send the abnormal data of the target to the staff through the monitoring platform, prompting the staff to take safe measures for the surge protector.

[0006] Furthermore, step S2 includes: Obtain historical equipment monitoring records of surge protectors monitored in the current cycle from the monitoring platform, and obtain the historical record set φ; Obtain the data acquisition time points of the surge protector and construct the indicator feature vector of the surge protector at a certain data acquisition time point; Obtain the timing vector sequence α of the surge protector, obtain the timing vector sequence β of the marked surge protector, calculate the local distance between the timing vector sequence α and the timing vector sequence β at each data acquisition time point, and construct the local matrix γ between the timing vector sequence α and the timing vector sequence β. Based on the local matrix γ, a cumulative distance matrix ζ is constructed to mark the distances between surge protectors. The specific construction process is as follows: Initialize the cumulative distance matrix ζ: the first element of the cumulative distance matrix ζ... , where d(1,1) is the first element in the local matrix γ; And set the boundary conditions for the cumulative distance matrix ζ: Where i=2,...,m, and m is the total number of rows in the local matrix γ; Where j=2,...,n, and n is the total number of columns in the local matrix γ; Recursively fill the accumulated distance matrix ζ: Where D(i-1,j) is the value of the element in the (i-1)th row and jth column of the cumulative distance matrix ζ, D(i,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ, and D(i-1,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ. Obtain the last element of the cumulative distance matrix ζ and denote it as the similarity distance D´ between the marked surge protector and the surge protector. Calculate the device similarity between the marked surge protector and the surge protector. η is the preset scaling factor; Set the similarity threshold S ▽ When S>S ▽ If the marked surge protector is not a reference surge protector for the surge protectors in the current cycle, then the marked surge protector is recorded as a reference surge protector. Otherwise, the marked surge protector is not a reference surge protector for the surge protectors in the current cycle, and no action is taken on the marked surge protector. In the above steps, the surge protector is marked as a decommissioned protector. Its operating environment, operating conditions, operating time, and even the length of its historical records are completely different from those of the surge protectors in the current cycle. However, the above steps solve this problem by constructing the local matrix and the cumulative distance matrix between the surge protector and the marked surge protector, and by calculating the equipment similarity between the marked surge protector and the surge protector through the cumulative distance matrix. This allows for the acquisition of a reference surge protector that is valuable for the surge protectors in the current cycle, thus fundamentally ensuring the accuracy of the equipment status analysis of the surge protectors.

[0007] Furthermore, step S3 includes: Obtain the reference historical time period of the reference surge protector, calculate the historical impact record corresponding to the maximum value of the impact value in each historical impact record, and record it as the marked historical impact record; Obtain the historical time point t when the reference surge protector was determined to have failed, obtain the duration of the distance between the reference historical period and the historical time point t, and record it as the reference distance duration T. △ ; Obtain the impact value C' from the historical impact records, and set the impact intensity threshold C. ◇ and duration threshold T ◇ When C' <C ◇ And T ◇ >T △ If the reference surge protector has an abnormal device status during the reference historical period, it is determined that the surge protector is abnormal in the current period and is recorded as the abnormal reference surge protector in the current period. Calculate the device anomaly value R of the surge protector in the current cycle, set the device anomaly threshold r. When R>r, it is determined that the surge protector cannot continue to be used in the current cycle; otherwise, the surge protector is recorded as a characteristic surge protector. Obtain the impact record of the characteristic surge protector in the current cycle, obtain the baseline historical impact record of the reference surge protector for the impact record, and calculate the impact approximation value S between the impact record and the baseline historical impact record; Set an approximate surge threshold s´. If S≤s´, the reference surge protector will not be processed; otherwise, the reference surge protector will be marked. Obtain the target reference surge protector for the characteristic surge protector, and obtain the energy accumulation limit value of the target reference surge protector; Obtain the energy accumulation threshold Q of the characteristic surge protector, and obtain the accumulated impact capability q of the characteristic surge protector in the current cycle; If q>Q, it is determined that the protection level of the characteristic surge protector has shifted in the current cycle, and the shift makes the protection level of the characteristic surge protector abnormal. The characteristic surge protector is recorded as the target surge protector. Otherwise, the characteristic surge protector is not processed. The monitoring platform acquires and aggregates data from various target surge protectors to obtain target anomaly data.

[0008] Furthermore, step S1 includes: The protection setting data of the decommissioned surge protector is obtained from the monitoring platform. The protection setting data includes the range of various monitoring parameters preset by the monitoring platform for the decommissioned surge protector. The monitoring platform retrieves the monitoring records of each decommissioned surge protector and its historical equipment. If the value of a certain monitoring parameter in the historical equipment monitoring record of a decommissioned surge protector is outside the range of the protection setting data, the decommissioned surge protector will not be processed; otherwise, the decommissioned surge protector will be marked. Obtain the experimental test records of the marked decommissioned surge protectors from the monitoring platform, and obtain the measured residual voltage U of the surge protectors from the experimental records; Set residual pressure threshold U ▽ , when U>U ▽ If the voltage protection level of the marked decommissioned surge protector is abnormal, it will be determined that the voltage protection level of the marked decommissioned surge protector is abnormal, and the marked decommissioned surge protector will be marked as a marked surge protector. Otherwise, it will be determined that the voltage protection level of the marked decommissioned surge protector is not abnormal, and no action will be taken on the marked decommissioned surge protector.

[0009] Furthermore, step S4 includes: Obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and obtain the location coordinates of the surge protectors; The monitoring platform sends the location coordinates of each target surge protector to the staff, prompting them to take safety measures for each target surge protector, such as disconnecting the power to the circuit where the target surge protector is located and replacing the target surge protector.

[0010] To better implement the above method, a device status monitoring system for surge protectors is also proposed. The system includes a device anomaly determination module, a reference value analysis module, a protection level anomaly determination module, and a safety processing module. The equipment anomaly determination module is used to analyze the degree of anomaly in the equipment protection level of decommissioned surge protectors and identify marked surge protectors. The reference value analysis module is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle, and to obtain the reference surge protector. The protection level anomaly determination module is used to determine the anomaly of the protection level of the characteristic surge protector based on the historical equipment monitoring records of the reference surge protector, and obtain the target anomaly data; The safety processing module is used to send abnormal data of the target to the staff through the monitoring platform, prompting the staff to perform safety processing on the surge protector.

[0011] Furthermore, the equipment anomaly determination module includes a decommissioned surge protector marking unit and an equipment anomaly determination unit; The decommissioned surge protector marking unit is used to acquire laboratory test records, historical equipment monitoring records, and protection setting data of decommissioned surge protectors, and to mark the decommissioned surge protectors. The equipment anomaly determination unit is used to analyze the degree of anomaly in the equipment protection level of the marked decommissioned surge protectors and obtain the marked surge protectors.

[0012] Furthermore, the reference value analysis module includes a matrix construction unit and a reference value analysis unit; The matrix construction unit is used to acquire historical equipment monitoring records of surge protectors, construct a local matrix γ between surge protectors and marked surge protectors, and generate an accumulated distance matrix ζ between marked surge protectors and surge protectors based on the local matrix γ. The reference value analysis unit is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle based on the accumulated distance matrix, and obtain the reference surge protector.

[0013] Furthermore, the protection level anomaly determination module includes a characteristic surge protector determination unit and a protection level anomaly determination unit; The characteristic surge protector determination unit is used to acquire historical equipment monitoring records of reference surge protectors, determine the equipment status of surge protectors, and identify characteristic surge protectors. The protection level anomaly determination unit is used to acquire the impact record of the characteristic surge protector in the current cycle, analyze the protection level deviation of the characteristic surge protector in the current cycle, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data.

[0014] Furthermore, the security processing module includes a security processing unit; The safety processing unit is used to obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and send the location coordinates of each target surge protector to the staff through the monitoring platform, prompting the staff to take safety measures for each target surge protector.

[0015] Compared with existing technologies, the beneficial effects of this invention are: This invention achieves accurate identification of the equipment status of surge protectors. It not only acquires various data from surge protectors in real time, but also identifies decommissioned surge protectors whose monitoring parameters are within preset ranges but whose protection levels have degraded by assessing the degree of abnormality in their protection levels. These decommissioned surge protectors are marked as "tagged surge protectors." A local matrix is ​​constructed between the surge protectors and the marked surge protectors, and a cumulative distance matrix is ​​generated based on this local matrix. The cumulative distance matrix is ​​then used to analyze the reference value of the marked surge protectors for the current cycle. This solves the problem that conventional methods cannot effectively compare decommissioned marked surge protectors with those currently in use, even when their usage time, historical data length, and usage environment are not entirely the same. A truly valuable reference surge protector was found, which made the subsequent anomaly judgment of the protection level of the characteristic surge protector more accurate. Finally, by analyzing the protection level deviation of the characteristic surge protector in the current cycle, it was determined whether the characteristic surge protector, which seemed normal in the current cycle, could continue to be used after being subjected to voltage surge. This not only improved the accuracy of equipment status monitoring of surge protectors, but also greatly reduced the risk of safety accidents such as explosions in the petrochemical and other fields. Attached Figure Description

[0016] Figure 1 This is a flowchart of the protection level offset analysis of a device condition monitoring method applied to surge protectors according to the present invention; Figure 2 This is a flowchart of a device status monitoring system for surge protectors according to the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Figures 1-2 As shown, the present invention provides a technical solution, a method for monitoring the status of equipment applied to surge protectors, the method comprising: Step S1: Obtain laboratory test records, historical equipment monitoring records, and protection setting data of the decommissioned surge protectors; analyze the degree of abnormality in the equipment protection level of the decommissioned surge protectors; and obtain the marked surge protectors. Step S1 includes: The protection setting data of the decommissioned surge protector is obtained from the monitoring platform. The protection setting data includes the range of various monitoring parameters preset by the monitoring platform for the decommissioned surge protector. The monitoring platform retrieves the monitoring records of each decommissioned surge protector and its historical equipment. If the value of a certain monitoring parameter in the historical equipment monitoring record of a decommissioned surge protector is outside the range of the protection setting data, the decommissioned surge protector will not be processed; otherwise, the decommissioned surge protector will be marked. For example, the monitoring parameters include resistive leakage current, internal temperature, etc. For example, the monitoring platform is a pre-built platform used to monitor the equipment status of surge protectors; For example, decommissioned surge protectors are surge protectors that have been replaced after actual use; Obtain the experimental test records of the marked decommissioned surge protectors from the monitoring platform, and obtain the measured residual voltage U of the surge protectors from the experimental records; For example, experimental test records include: Experiments were conducted on decommissioned surge protectors using inrush currents of specified waveforms and amplitudes to obtain experimental test records of the surge protectors. The specific experimental tests were based on the national standard (GB / T 18802.1). For example, the measured residual pressure U is specifically: The measured residual voltage of the surge protector is determined by strictly following the national standard (such as GB / T 18802.1) and the test conditions declared by the manufacturer in the experimental test record, applying the specified inrush current (usually its nominal discharge current or maximum discharge current), and using a high-voltage probe and oscilloscope to measure the peak voltage value across its terminals. Set residual pressure threshold U ▽ , when U>U ▽ If the voltage protection level of the marked decommissioned surge protector is abnormal, it will be determined that the voltage protection level of the marked decommissioned surge protector is abnormal, and the marked decommissioned surge protector will be marked as a marked surge protector. Otherwise, it will be determined that the voltage protection level of the marked decommissioned surge protector is not abnormal, and no action will be taken on the marked decommissioned surge protector.

[0019] Step S2: Obtain historical equipment monitoring records of surge protectors, construct a local matrix between surge protectors and marked surge protectors, generate a cumulative distance matrix between marked surge protectors and surge protectors based on the local matrix, analyze the reference value of marked surge protectors for surge protectors in the current cycle, and obtain reference surge protectors. Step S2 includes: Obtain historical equipment monitoring records of surge protectors monitored in the current cycle from the monitoring platform, and obtain the historical record set φ; For example, the specific process of obtaining the historical record set φ is as follows: Obtain the usage duration T of the surge protector from the start of use to the current cycle. Based on the usage duration T, obtain the characteristic historical device monitoring records of the surge protector. Obtain and aggregate the historical device monitoring records of each device from the start of use to the characteristic historical device monitoring records of the surge protector to obtain the historical record set φ. For example, the specific process for obtaining the historical device monitoring records of the surge protector is as follows: Obtain historical device monitoring records for the time point corresponding to the usage duration T of the tagged surge protector, and record them as characteristic historical device monitoring records; Obtain the data acquisition time points of the surge protector and construct the indicator feature vector of the surge protector at a certain data acquisition time point; For example, the specific process of constructing the indicator feature vector of a surge protector at a certain data acquisition time point is as follows: Set the unit duration, obtain the historical time period from the start of the surge protector to the current cycle, and divide it using the unit duration to obtain the data acquisition time points of the surge protector. Obtain the characteristic indicators of the surge protector at a certain data acquisition time point and aggregate them to construct the indicator feature vector of the surge protector at a certain data acquisition time point. Obtain the timing vector sequence α of the surge protector, obtain the timing vector sequence β of the marked surge protector, calculate the local distance between the timing vector sequence α and the timing vector sequence β at each data acquisition time point, and construct the local matrix γ between the timing vector sequence α and the timing vector sequence β. For example, the specific process of obtaining the timing vector sequence α of the surge protector is as follows: The characteristic vectors of the surge protector at each data acquisition time point are obtained and sorted according to the time order to obtain the time sequence vector sequence α of the surge protector; For example, the specific process of constructing the indicator feature vector of a surge protector at a certain data acquisition time point is as follows: Acquire the historical time period from the start of operation of the surge protector to the current cycle, and acquire the time point within the historical time period at unit intervals and record it as the data acquisition time point; The characteristic indicators of the surge protector at a certain data acquisition time point are obtained and normalized. The normalized characteristic indicators are sorted in a preset order and aggregated to obtain the indicator feature vector corresponding to the surge protector at a certain data acquisition time point. For example, the characteristic indicators of a surge protector at a certain data acquisition time point include resistive leakage current, internal temperature, etc. For example, the specific process of obtaining the timing vector sequence of the marked surge protector includes: Obtain the historical time period of each historical device monitoring record in the historical record set φ of the marked surge protector, and obtain the time point within the historical time period at unit intervals and record it as the data acquisition time point; The characteristic indicators of the marked surge protector at the data acquisition time point are obtained and normalized. The normalized characteristic indicators are sorted in a preset order and aggregated to obtain the indicator feature vector corresponding to the marked surge protector at the data acquisition time point. The indicator feature vectors of the marked surge protectors at each data acquisition time point are obtained and sorted according to the time order to obtain the time sequence vector sequence of the marked surge protectors; For example, the formula for calculating the local distance d(i,j) between the indicator feature vector of the time series vector sequence α at the i-th data acquisition time point and the time series vector sequence β at the j-th data acquisition time point is as follows: , Where z is the total number of elements in the indicator feature vector of the time-series vector sequence α at the i-th data acquisition time point; α i [k] represents the feature value of the k-th element of the time-series vector sequence α at the i-th data acquisition time point; β i [k] represents the feature value of the kth element of the time-series vector sequence β at the i-th data acquisition time point; For example, the element in the i-th row and j-th column of the local matrix γ is the local distance d(i,j) between the indicator feature vector of the time series vector sequence α at the i-th data acquisition time point and the time series vector sequence β at the j-th data acquisition time point. Based on the local matrix γ, a cumulative distance matrix ζ is constructed to mark the distances between surge protectors. The specific construction process is as follows: Initialize the cumulative distance matrix ζ: the first element of the cumulative distance matrix ζ... , where d(1,1) is the first element in the local matrix γ; And set the boundary conditions for the cumulative distance matrix ζ: Where i=2,...,m, and m is the total number of rows in the local matrix γ; Where j=2,...,n, and n is the total number of columns in the local matrix γ; Recursively fill the accumulated distance matrix ζ: Where D(i-1,j) is the value of the element in the (i-1)th row and jth column of the cumulative distance matrix ζ, D(i,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ, and D(i-1,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ. Obtain the last element of the cumulative distance matrix ζ and denote it as the similarity distance D´ between the marked surge protector and the surge protector. Calculate the device similarity between the marked surge protector and the surge protector. η is the preset scaling factor; Set the similarity threshold S ▽ When S>S ▽ If the marked surge protector is deemed to have reference value for the surge protectors in the current cycle, it will be recorded as a reference surge protector. Otherwise, if the marked surge protector is deemed not to have reference value for the surge protectors in the current cycle, it will be left unprocessed.

[0020] Step S3: Based on the historical equipment monitoring records of the reference surge protector, identify the characteristic surge protector, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data; Step S3 includes: Obtain the reference historical time period of the reference surge protector, calculate the historical impact record corresponding to the maximum value of the impact value in each historical impact record, and record it as the marked historical impact record; For example, the specific process for obtaining the reference historical time period of the surge protector is as follows: Obtain the historical device monitoring records of the reference surge protector in the current cycle, obtain the historical time period corresponding to the characteristic historical device monitoring records of the reference surge protector, and record it as the baseline historical time period; For example, the reference surge protector has the same equipment model as the surge protector; For example, the specific calculation process for the impact value C in historical impact records is as follows: Obtain historical surge records of the reference surge protector after the baseline historical period, and extract the values ​​of various surge indicators from each historical surge record. The values ​​of each surge indicator in each historical surge record are all within the preset range of the monitoring platform. For example, impact parameters include maximum discharge current and impact energy; Calculate the impact value C from historical impact records: , Where w represents the total number of impact indicators in the historical impact records; L x This represents the distance value of the xth impact indicator in the historical impact record; E x E represents the value of the x-th shock indicator in the historical shock record. (x,min) E (x,max) These represent the maximum and minimum values ​​within the preset range of the x-th impact indicator for the monitoring platform, respectively. Obtain the historical time point t when the reference surge protector was determined to have failed, obtain the duration of the distance between the reference historical period and the historical time point t, and record it as the reference distance duration T. △ ; For example, the reference surge protector is determined to be functionally faulty specifically as follows: If the status indicator light of the reference surge protector turns red or goes out, the casing is charred, or the monitored parameters such as resistive leakage current and internal temperature exceed the preset range, the reference surge protector is deemed to have failed. Obtain the impact value C' from the historical impact records, and set the impact intensity threshold C. ◇ and duration threshold T ◇ When C' <C ◇ And T ◇ >T △ If the reference surge protector has an abnormal device status during the reference historical period, it is determined that the surge protector is abnormal in the current period and is recorded as the abnormal reference surge protector in the current period. Calculate the device anomaly value R of the surge protector in the current cycle, set the device anomaly threshold r. When R>r, it is determined that the surge protector cannot continue to be used in the current cycle; otherwise, the surge protector is recorded as a characteristic surge protector. For example, the specific formula for calculating the equipment anomaly value R of the surge protector in the current cycle is: Where H is the total number of abnormal reference surge protectors in the current cycle, H sum The total number of reference surge protectors for the current cycle; Obtain the impact record of the characteristic surge protector in the current cycle, obtain the baseline historical impact record of the reference surge protector for the impact record, and calculate the impact approximation value S between the impact record and the baseline historical impact record; For example, the specific process for obtaining the baseline historical surge record for the reference surge protector is as follows: Obtain the first historical impact record of the reference surge protector after the reference historical period, and record it as the reference historical impact record of the reference surge protector for the impact record; For example, the historical impact record of a reference surge protector is: the record of instantaneous high-voltage surges generated by the reference surge protector in the face of lightning strikes or operational overvoltages on electrical lines, which is recorded as the historical impact record; For example, the specific calculation process for the approximate impact value S between the impact record and the baseline historical impact record is as follows: The values ​​of various impact indicators in the impact record are obtained and normalized. The impact indicators in the normalized impact record are sorted in a preset order to obtain the impact feature vector U of the impact record. Obtain the impact feature vector U´ of the baseline historical impact record, and calculate the impact approximation S between the impact record and the baseline historical impact record: , Set an approximate surge threshold s´. If S≤s´, the reference surge protector will not be processed; otherwise, the reference surge protector will be marked. Set an approximate surge threshold s´. If S≤s´, the reference surge protector will not be processed; otherwise, the reference surge protector will be marked. Obtain the target reference surge protector for the characteristic surge protector, and obtain the energy accumulation limit value of the target reference surge protector; For example, the specific process for obtaining the energy accumulation limit value of the target reference surge protector is as follows: The distance between the reference historical impact record in the marked reference surge protector and the historical time point when the function was determined to be in failure is obtained and recorded as the marking duration. When the marking duration is less than the preset marking duration threshold, the marked reference surge protector is recorded as the target reference surge protector. The sum of the impact energy of several historical impact records between the start of operation of the target reference surge protector and the reference historical impact record is obtained to obtain the energy accumulation limit value of the target reference surge protector. For example, the surge energy recorded in historical impact records can be used to obtain the surge energy of each impact on the surge protector based on the peak current and waveform of the historical impact records. Obtain the energy accumulation threshold Q of the characteristic surge protector, and obtain the accumulated impact capability q of the characteristic surge protector in the current cycle; For example, the specific process for obtaining the energy accumulation threshold Q is as follows: The average value of the energy accumulation limit of the target reference surge protector of the characteristic surge protector is obtained to obtain the energy accumulation threshold Q of the characteristic surge protector; For example, the specific process for obtaining the cumulative impact capability value q is as follows: The sum of the impact energy between each historical impact record from the start of operation of the surge protector to the current cycle is obtained to obtain the cumulative impact capability value q of the surge protector in the current cycle. If q>Q, it is determined that the protection level of the characteristic surge protector has shifted in the current cycle, and the shift makes the protection level of the characteristic surge protector abnormal. The characteristic surge protector is recorded as the target surge protector. Otherwise, the characteristic surge protector is not processed. The monitoring platform acquires and aggregates data from various target surge protectors to obtain target anomaly data.

[0021] Step S4: Send the abnormal data of the target to the staff through the monitoring platform, prompting the staff to take safe measures for the surge protector.

[0022] Step S4 includes: Obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and obtain the location coordinates of the surge protectors; The monitoring platform sends the location coordinates of each target surge protector to the staff, prompting them to take safety measures for each target surge protector, such as disconnecting the power to the circuit where the target surge protector is located and replacing the target surge protector.

[0023] To better implement the above method, a device status monitoring system for surge protectors is also proposed. The system includes a device anomaly determination module, a reference value analysis module, a protection level anomaly determination module, and a safety processing module. The equipment anomaly determination module is used to analyze the degree of anomaly in the equipment protection level of decommissioned surge protectors and identify marked surge protectors. The reference value analysis module is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle, and to obtain the reference surge protector. The protection level anomaly determination module is used to determine the anomaly of the protection level of the characteristic surge protector based on the historical equipment monitoring records of the reference surge protector, and obtain the target anomaly data; The safety processing module is used to send abnormal data of the target to the staff through the monitoring platform, prompting the staff to perform safety processing on the surge protector.

[0024] The equipment anomaly determination module includes a decommissioned surge protector marking unit and an equipment anomaly determination unit. The decommissioned surge protector marking unit is used to acquire laboratory test records, historical equipment monitoring records, and protection setting data of decommissioned surge protectors, and to mark the decommissioned surge protectors. The equipment anomaly determination unit is used to analyze the degree of anomaly in the equipment protection level of the marked decommissioned surge protectors and obtain the marked surge protectors.

[0025] The reference value analysis module includes a matrix construction unit and a reference value analysis unit. The matrix construction unit is used to acquire historical equipment monitoring records of surge protectors, construct a local matrix γ between surge protectors and marked surge protectors, and generate an accumulated distance matrix ζ between marked surge protectors and surge protectors based on the local matrix γ. The reference value analysis unit is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle based on the accumulated distance matrix, and obtain the reference surge protector.

[0026] The protection level anomaly determination module includes a characteristic surge protector determination unit and a protection level anomaly determination unit. The characteristic surge protector determination unit is used to acquire historical equipment monitoring records of reference surge protectors, determine the equipment status of surge protectors, and identify characteristic surge protectors. The protection level anomaly determination unit is used to acquire the impact record of the characteristic surge protector in the current cycle, analyze the protection level deviation of the characteristic surge protector in the current cycle, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data.

[0027] The security processing module includes a security processing unit; The safety processing unit is used to obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and send the location coordinates of each target surge protector to the staff through the monitoring platform, prompting the staff to take safety measures for each target surge protector.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method for monitoring the condition of equipment applied to surge protectors, characterized in that, The method includes: Step S1: Obtain laboratory test records, historical equipment monitoring records, and protection setting data of the decommissioned surge protectors; analyze the degree of abnormality in the equipment protection level of the decommissioned surge protectors; and obtain the marked surge protectors. Step S2: Obtain historical equipment monitoring records of surge protectors, construct a local matrix between surge protectors and marked surge protectors, generate a cumulative distance matrix between marked surge protectors and surge protectors based on the local matrix, analyze the reference value of marked surge protectors for surge protectors in the current cycle, and obtain reference surge protectors. Step S3: Based on the historical equipment monitoring records of the reference surge protector, identify the characteristic surge protector, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data; Step S4: Send the abnormal data of the target to the staff through the monitoring platform, prompting the staff to take safe measures for the surge protector.

2. The equipment status monitoring method for surge protectors according to claim 1, characterized in that, Step S2 includes: Obtain historical equipment monitoring records of surge protectors monitored in the current cycle from the monitoring platform, and obtain the historical record set φ; Obtain the data acquisition time points of the surge protector and construct the indicator feature vector of the surge protector at a certain data acquisition time point; Obtain the timing vector sequence α of the surge protector, obtain the timing vector sequence β of the marked surge protector, calculate the local distance between the timing vector sequence α and the timing vector sequence β at each data acquisition time point, and construct the local matrix γ between the timing vector sequence α and the timing vector sequence β. Based on the local matrix γ, a cumulative distance matrix ζ is constructed to mark the distances between surge protectors. The specific construction process is as follows: Initialize the cumulative distance matrix ζ: the first element of the cumulative distance matrix ζ... , where d(1,1) is the first element in the local matrix γ; And set the boundary conditions for the cumulative distance matrix ζ: Where i=2,...,m, and m is the total number of rows in the local matrix γ; Where j=2,...,n, and n is the total number of columns in the local matrix γ; Recursively fill the accumulated distance matrix ζ: Where D(i-1,j) is the value of the element in the (i-1)th row and jth column of the cumulative distance matrix ζ, D(i,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ, and D(i-1,j-1) is the value of the element in the (i-1)th row and (j-1)th column of the cumulative distance matrix ζ. Obtain the last element of the cumulative distance matrix ζ and denote it as the similarity distance D´ between the marked surge protector and the surge protector. Calculate the device similarity between the marked surge protector and the surge protector. η is the preset scaling factor; Set the similarity threshold S ▽ When S>S ▽ If the marked surge protector is deemed to have reference value for the surge protectors in the current cycle, it will be recorded as a reference surge protector. Otherwise, if the marked surge protector is deemed not to have reference value for the surge protectors in the current cycle, it will be left unprocessed.

3. The equipment status monitoring method for surge protectors according to claim 1, characterized in that, Step S3 includes: Obtain the reference historical time period of the reference surge protector, calculate the historical impact record corresponding to the maximum value of the impact value in each historical impact record, and record it as the marked historical impact record; Obtain the historical time point t when the reference surge protector was determined to have failed, obtain the duration of the distance between the reference historical period and the historical time point t, and record it as the reference distance duration T. △ ; Obtain the impact value C' from the historical impact records, and set the impact intensity threshold C. ◇ and duration threshold T ◇ When C' <C ◇ And T ◇ >T △ If the reference surge protector has an abnormal device status during the reference historical period, it is determined that the surge protector is abnormal in the current period and is recorded as the abnormal reference surge protector in the current period. Calculate the device anomaly value R of the surge protector in the current cycle, set the device anomaly threshold r. When R>r, it is determined that the surge protector cannot continue to be used in the current cycle; otherwise, the surge protector is recorded as a characteristic surge protector. Obtain the impact record of the characteristic surge protector in the current cycle, obtain the baseline historical impact record of the reference surge protector for the impact record, and calculate the impact approximation value S between the impact record and the baseline historical impact record; Set an approximate surge threshold s´. If S≤s´, the reference surge protector will not be processed; otherwise, the reference surge protector will be marked. Obtain the target reference surge protector for the characteristic surge protector, and obtain the energy accumulation limit value of the target reference surge protector; Obtain the energy accumulation threshold Q of the characteristic surge protector, and obtain the accumulated impact capability q of the characteristic surge protector in the current cycle; If q>Q, it is determined that the protection level of the characteristic surge protector has shifted in the current cycle, and the shift makes the protection level of the characteristic surge protector abnormal. The characteristic surge protector is recorded as the target surge protector. Otherwise, the characteristic surge protector is not processed. The monitoring platform acquires and aggregates data from various target surge protectors to obtain target anomaly data.

4. The equipment status monitoring method for surge protectors according to claim 1, characterized in that, Step S1 includes: The protection setting data of the decommissioned surge protector is obtained from the monitoring platform. The protection setting data includes the range of various monitoring parameters preset by the monitoring platform for the decommissioned surge protector. The monitoring platform retrieves the monitoring records of each decommissioned surge protector and its historical equipment. If the value of a certain monitoring parameter in the historical equipment monitoring record of a decommissioned surge protector is outside the range of the protection setting data, the decommissioned surge protector will not be processed; otherwise, the decommissioned surge protector will be marked. Obtain the experimental test records of the marked decommissioned surge protectors from the monitoring platform, and obtain the measured residual voltage U of the surge protectors from the experimental records; Set residual pressure threshold U ▽ , when U>U ▽ If the voltage protection level of the marked decommissioned surge protector is abnormal, it will be determined that the voltage protection level of the marked decommissioned surge protector is abnormal, and the marked decommissioned surge protector will be marked as a marked surge protector. Otherwise, it will be determined that the voltage protection level of the marked decommissioned surge protector is not abnormal, and no action will be taken on the marked decommissioned surge protector.

5. The equipment status monitoring method for surge protectors according to claim 1, characterized in that, Step S4 includes: Obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and obtain the location coordinates of the surge protectors; The monitoring platform sends the location coordinates of each target surge protector to the staff, prompting them to take safety measures for each target surge protector, such as disconnecting the power to the circuit where the target surge protector is located and replacing the target surge protector.

6. A device condition monitoring system for surge protectors, used to execute the device condition monitoring method for surge protectors as described in any one of claims 1-5, characterized in that, The system includes an equipment anomaly determination module, a reference value analysis module, a protection level anomaly determination module, and a security processing module. The equipment anomaly determination module is used to analyze the degree of anomaly in the equipment protection level of decommissioned surge protectors and to identify marked surge protectors. The reference value analysis module is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle, and obtain the reference surge protector; The protection level anomaly determination module is used to determine the anomaly of the protection level of the characteristic surge protector based on the historical equipment monitoring records of the reference surge protector, and obtain the target anomaly data. The safety processing module is used to send abnormal target data to staff through the monitoring platform, prompting staff to perform safety processing on the surge protector.

7. A device status monitoring system for surge protectors according to claim 6, characterized in that, The equipment anomaly determination module includes a decommissioned surge protector marking unit and an equipment anomaly determination unit; The decommissioned surge protector marking unit is used to acquire laboratory test records, historical equipment monitoring records and protection setting data of the decommissioned surge protector, and to mark the decommissioned surge protector. The equipment anomaly determination unit is used to analyze the degree of anomaly in the equipment protection level of the marked decommissioned surge protectors and obtain the marked surge protectors.

8. A device status monitoring system for surge protectors according to claim 6, characterized in that, The reference value analysis module includes a matrix construction unit and a reference value analysis unit; The matrix construction unit is used to acquire historical equipment monitoring records of surge protectors, construct a local matrix γ between surge protectors and marked surge protectors, and generate an accumulated distance matrix ζ between marked surge protectors and surge protectors based on the local matrix γ. The reference value analysis unit is used to analyze the reference value of the marked surge protector to the surge protector in the current cycle based on the accumulated distance matrix, and obtain the reference surge protector.

9. A device status monitoring system for surge protectors according to claim 6, characterized in that, The protection level anomaly determination module includes a characteristic surge protector determination unit and a protection level anomaly determination unit. The characteristic surge protector determination unit is used to acquire historical equipment monitoring records of reference surge protectors, determine the equipment status of surge protectors, and determine characteristic surge protectors. The protection level anomaly determination unit is used to acquire the impact record of the characteristic surge protector in the current cycle, analyze the protection level deviation of the characteristic surge protector in the current cycle, determine the anomaly of the protection level of the characteristic surge protector, and obtain the target anomaly data.

10. A device condition monitoring system for surge protectors according to claim 6, characterized in that, The security processing module includes a security processing unit; The safety processing unit is used to obtain target anomaly data from the monitoring platform, obtain each target surge protector from the target anomaly data, and send the location coordinates of each target surge protector to the staff through the monitoring platform, prompting the staff to take safety measures for each target surge protector.

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