Interlocking grounding clamp remote management system and management method

Abstract

The present invention provides an interlocking grounding wire clamp remote management system and a management method, which relate to the technical field of power systems, and include collecting historical grounding resistance data of each grounding wire clamp in a normal state, calculating a baseline threshold of each grounding wire clamp based on these data, reading the grounding resistance of each grounding wire clamp in real time, dynamically adjusting the baseline threshold based on all real-time grounding resistances to obtain a dynamic threshold, comparing the real-time grounding resistance with the dynamic threshold, and promptly discovering a grounding wire clamp whose grounding resistance exceeds a safe range; when it is detected that the real-time grounding resistance of a certain grounding wire clamp exceeds the dynamic threshold, calculating a change rate based on the previous grounding resistance of the grounding wire clamp, and dynamically adjusting the change rate threshold; within a preset time window, if the grounding resistance change rate exceeds the dynamic change rate threshold, fault information is generated in real time. The present invention realizes efficient management of grounding wire clamps by means of real-time monitoring, dynamic adjustment of thresholds, and introduction of change rate thresholds.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a remote management system and a management method for interlocking grounding clamps. Background Art

[0002] In the power system, the grounding clamp is a key electrical connection component, and its performance stability and safety are directly related to the operation quality and safety of the entire power grid. Traditional grounding clamp management mainly relies on manual inspections and regular testing, which is not only inefficient, but also difficult to detect and deal with potential safety hazards in a timely manner. Especially in a complex and changeable electrical environment, the change of grounding resistance may be affected by many factors, such as weather conditions, soil moisture, equipment aging, etc. These factors may cause the grounding resistance of the grounding clamp to exceed the safe range, thereby causing electrical accidents.

[0003] In order to overcome the shortcomings of traditional management methods and improve the management efficiency and safety of grounding clamps, in recent years, with the rapid development of the Internet of Things, big data and remote monitoring technology, remote management methods have gradually become a research hotspot.

[0004] However, most existing remote management methods focus on monitoring a single grounding clamp, lacking comprehensive consideration of the mutual influence and dynamic changes between multiple grounding clamps in the entire system. In addition, these methods often use static values ​​when setting safety thresholds, which cannot adapt to complex and changing electrical environments, resulting in frequent false alarms and missed alarms.

[0005] Therefore, it is necessary to provide a remote management system and management method for interlocking grounding clamps to solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a remote management system and management method for interlocked grounding clamps, which realizes comprehensive and accurate management of grounding clamps by real-time monitoring of the grounding resistance of each grounding clamp and dynamically adjusting the safety threshold of each grounding clamp based on historical data and real-time environmental parameters. At the same time, the method also introduces the concept of change rate threshold, and further improves the sensitivity and accuracy of fault detection by monitoring the changing trend of grounding resistance.

[0007] The present invention provides a remote management method for an interlocking grounding clamp, which is applied to a plurality of grounding clamps that are electrically connected. The management method comprises the following steps:

[0008] S1: Under normal conditions, obtaining a baseline threshold of each grounding clamp, wherein the baseline threshold represents a maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions;

[0009] S2: reading the real-time grounding resistance of each grounding clamp in real time, and dynamically adjusting the baseline threshold of each grounding clamp based on all the real-time grounding resistances to obtain a dynamic threshold of each grounding clamp;

[0010] S3: comparing the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold, and if the real-time grounding resistance exceeds the dynamic threshold, executing step S4;

[0011] S4: calculating a change rate threshold of the grounding clamp, and dynamically adjusting the change rate threshold of the grounding clamp based on all real-time grounding resistances to obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on a previous grounding resistance of the grounding clamp;

[0012] S5: calculating the grounding resistance change rate of the current grounding clamp within a preset time window, and generating fault information in real time when the grounding resistance change rate exceeds the dynamic change rate threshold.

[0013] Preferably, step S1 comprises the following steps:

[0014] S11: collecting historical grounding resistance data sets of each grounding wire clamp under normal conditions, and calculating a safety factor based on an average value and a standard deviation of the historical grounding resistance data sets, wherein the safety factor represents a coefficient of a maximum grounding resistance increase allowed by the grounding wire clamp under normal conditions;

[0015] S12: Calculate the maximum safe grounding resistance value of each grounding clamp by combining the average value, the standard deviation and the safety factor, and use it as a baseline threshold.

[0016] Preferably, step S2 comprises the following steps:

[0017] S21: real-time monitoring of the real-time grounding resistance of all grounding clamps, and calculating a weighted average value according to the real-time grounding resistance of all grounding clamps, wherein the calculation formula of the weighted average value is: ;

[0018] in, is the number of grounding clamps, For the The real-time ground resistance of each grounding clamp, For the The weight of the grounding clamp, is the weighted average;

[0019] S22: Calculate the dynamic threshold of each grounding clamp based on the weighted average value, wherein the calculation formula of the dynamic threshold is: ;

[0020] in, For the The dynamic threshold of the ground clamp, For the Baseline threshold for each ground clamp, is the adjustment factor of the dynamic threshold, is the number of environmental parameters, is the number of historical data points, For the The weight of the environmental parameters, For the The value of an environmental parameter, For the The weight of historical data points, For the The value of historical data points, and are the influencing factors of environmental parameters and historical data points respectively.

[0021] Preferably, step S3 comprises the following steps:

[0022] S31: Read the real-time grounding resistance of the current grounding clamp in real time;

[0023] S32: Compare the real-time grounding resistance of the current grounding clamp with the dynamic threshold of the current grounding clamp;

[0024] S33: If the real-time grounding resistance is greater than the dynamic threshold, it is considered that the real-time grounding resistance of the current grounding clamp exceeds the safety range, and the process goes to step S4; otherwise, the process returns to step S31 and continues to monitor the real-time grounding resistance of the current grounding clamp.

[0025] Preferably, step S4 comprises the following steps:

[0026] S41: obtaining the previous grounding resistance of the current grounding clamp at multiple previous moments, and calculating the change rate according to the previous grounding resistance at each previous moment, wherein the calculation formula of the change rate is: ;

[0027] in, is the rate of change, For the moment Time The previous grounding resistance of the grounding clamp, For the previous moment The previous ground resistance, is the time interval;

[0028] S42: averaging the change rates at multiple previous moments to obtain an average change rate, the calculation formula of the average change rate is: ;

[0029] in, is the average rate of change, is the number of previous moments, For the The rate of change at a moment;

[0030] S43: Calculate a weighted average change rate based on the average change rate, and use the weighted average change rate as a change rate threshold, wherein the calculation formula of the weighted average change rate is: ;

[0031] in, is the change rate threshold, is the number of grounding clamps, For the The weight of the grounding clamp;

[0032] S44: Calculate the dynamic change rate threshold based on the weighted average value, wherein the calculation formula of the dynamic change rate threshold is: ;

[0033] in, is the dynamic change rate threshold, It is the adjustment factor of the dynamic change rate threshold.

[0034] Preferably, step S5 comprises the following steps:

[0035] S51: within a preset time window, calculating the grounding resistance change rate according to the grounding resistances at both ends of the time window of the current grounding clamp;

[0036] S52: comparing the current grounding resistance change rate of the grounding clamp with the calculated dynamic change rate threshold;

[0037] S53: If the ground resistance change rate is greater than the dynamic change rate threshold, a fault message is generated and maintenance personnel are notified to perform inspection and repair.

[0038] Preferably, the fault information includes an identification of the grounding clamp where the abnormality occurs, a current grounding resistance value, a grounding resistance change rate, and a timestamp of the abnormality occurring.

[0039] The present invention also provides an interlocking grounding clamp remote management system, which is applied to an interlocking grounding clamp remote management method, and is configured with a plurality of grounding clamps that are electrically connected. The management system comprises:

[0040] A baseline threshold calculation module, used to obtain a baseline threshold of each grounding clamp under normal conditions, wherein the baseline threshold represents a maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions;

[0041] A baseline threshold adjustment module is used to read the real-time grounding resistance of each grounding wire clamp in real time, and dynamically adjust the baseline threshold of each grounding wire clamp based on all the real-time grounding resistances to obtain a dynamic threshold of each grounding wire clamp;

[0042] A first threshold comparison module, used for comparing the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold, and triggering the change rate threshold adjustment module if the real-time grounding resistance exceeds the dynamic threshold;

[0043] a change rate threshold adjustment module, used to calculate a change rate threshold of the grounding clamp, dynamically adjust the change rate threshold of the grounding clamp based on all real-time grounding resistances to obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on a previous grounding resistance of the grounding clamp;

[0044] The second threshold comparison module is used to calculate the grounding resistance change rate of the current grounding clamp within a preset time window, and to generate fault information in real time when the grounding resistance change rate exceeds the dynamic change rate threshold.

[0045] Compared with the related art, the interlocking grounding clamp remote management system and management method provided by the present invention has the following beneficial effects:

[0046] 1. The present invention first collects the historical grounding resistance data of each grounding clamp in a normal state, and calculates the baseline threshold value (i.e., the maximum safe grounding resistance value) of each grounding clamp based on these data. Then, the grounding resistance of each grounding clamp is read in real time, and the baseline threshold value of each grounding clamp is dynamically adjusted based on all real-time grounding resistances to obtain a dynamic threshold value. By comparing the real-time grounding resistance with the dynamic threshold value, the grounding clamp whose grounding resistance exceeds the safe range can be found in time.

[0047] 2. In order to further improve the accuracy of fault detection, the present invention also introduces the concept of change rate threshold. When it is detected that the real-time grounding resistance of a grounding clamp exceeds the dynamic threshold, the method calculates the change rate based on the previous grounding resistance of the grounding clamp and dynamically adjusts the change rate threshold. Within the preset time window, if the change rate of the grounding resistance exceeds the dynamic change rate threshold, fault information is generated in real time and maintenance personnel are notified to conduct inspection and repair.

[0048] In summary, the interlocking grounding clamp remote management method proposed in the present invention realizes comprehensive and accurate management of grounding clamps through real-time monitoring, dynamic adjustment of thresholds, and introduction of change rate thresholds, thereby effectively improving the safety and stability of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A flow chart of a remote management method for an interlocking grounding clamp provided by the present invention;

[0050] Figure 2 A module structure diagram of an interlocking grounding clamp remote management system provided by the present invention. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other without conflict.

[0052] It should also be noted that, for ease of description, only the parts related to the present invention, but not all of the contents, are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the various operations (or steps) as being processed sequentially, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the various operations can be rearranged. The processing can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The processing can correspond to methods, functions, procedures, subroutines, subprograms, etc.

[0053] Embodiment 1

[0054] The present invention provides a remote management method for an interlocking grounding clamp, which is applied to a plurality of grounding clamps with electrical connections. Figure 1 As shown, the management method includes the following steps:

[0055] S1: Under normal conditions, a baseline threshold of each grounding clamp is obtained, wherein the baseline threshold represents a maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions.

[0056] Specifically, step S1 includes the following steps:

[0057] S11: Collect historical grounding resistance data sets of each grounding wire clamp under normal conditions, and calculate a safety factor based on the average value and standard deviation of the historical grounding resistance data sets, wherein the safety factor represents a coefficient of a maximum grounding resistance increase allowed by the grounding wire clamp under normal conditions.

[0058] In this embodiment, firstly, a certain number of historical ground resistance data sets under normal conditions are collected. These data sets are usually from actual field measurements or simulation test results to ensure the accuracy and reliability of the data.

[0059] Then, a statistical analysis is performed on the collected historical ground resistance data set to calculate the average value and standard deviation thereof, and a safety factor is set according to the average value and standard deviation. For example, the safety factor is 1.1 or 1.2, and the factor is used to determine the maximum allowable ground resistance increase.

[0060] By setting the safety factor, it can be ensured that even in the most unfavorable circumstances, the grounding resistance of the grounding clamp will not exceed the safety range, thereby protecting the equipment from the hazards caused by excessive resistance. At the same time, after defining the safety factor, the relationship between the actual grounding resistance and the product of the safety factor can be regularly monitored to implement preventive maintenance strategies and timely discover and deal with possible problems.

[0061] S12: Calculate the maximum safe grounding resistance value of each grounding clamp by combining the mean value, standard deviation and safety factor, and use it as the baseline threshold.

[0062] In this embodiment, the calculated average value, standard deviation and set safety factor are combined to calculate the maximum safe grounding resistance value of each grounding clamp. The calculation formula of the maximum safe grounding resistance value is specifically:

[0063] Maximum safe grounding resistance = average value + (standard deviation × safety factor);

[0064] The value obtained after calculation is the baseline threshold of each grounding clamp, which will be used for monitoring and dynamic adjustment in subsequent steps. This step can provide an accurate baseline threshold for each grounding clamp to ensure that the system operates within a safe and controllable range. At the same time, since the baseline threshold is calculated based on actual historical data, it can better reflect the actual working condition of the grounding clamp and improve the adaptability and flexibility of the system.

[0065] S2: Read the real-time grounding resistance of each grounding wire clamp in real time, and dynamically adjust the baseline threshold of each grounding wire clamp based on all the real-time grounding resistances to obtain the dynamic threshold of each grounding wire clamp.

[0066] Specifically, step S2 includes the following steps:

[0067] S21: real-time monitoring of the real-time grounding resistance of all grounding clamps, and calculating a weighted average value according to the real-time grounding resistance of all grounding clamps, wherein the calculation formula of the weighted average value is: ;

[0068] in, is the number of grounding clamps, For the The real-time ground resistance of each grounding clamp, For the The weight of the grounding clamp, is the weighted average.

[0069] In this embodiment, a sensor is used to monitor the grounding resistance of each grounding clamp in real time to ensure that the latest grounding resistance data can be obtained in a timely manner. Then, these real-time data are transmitted to the monitoring platform of the grounding clamp for processing through wireless or wired communication.

[0070] During processing, the weight of each grounding clamp is first determined, which can be pre-set according to factors such as the importance and location of the grounding clamp. For example, grounding clamps near key equipment are given higher weights, and the sum of the weights of all grounding clamps is ensured to be 1.

[0071] S22: Calculate the dynamic threshold of each grounding clamp based on the weighted average value, wherein the calculation formula of the dynamic threshold is: ;

[0072] in, For the The dynamic threshold of the ground clamp, For the Baseline threshold for each ground clamp, is the adjustment factor of the dynamic threshold, is the number of environmental parameters, is the number of historical data points, For the The weight of the environmental parameters, For the The value of an environmental parameter, For the The weight of historical data points, For the The value of historical data points, and are the influencing factors of environmental parameters and historical data points respectively.

[0073] In this embodiment, environmental parameters and historical data points are determined: environmental parameters affecting grounding resistance are determined, including but not limited to humidity and temperature, and a weight is assigned to each environmental parameter; at the same time, historical grounding resistance data is collected and weights are assigned according to their importance and relevance.

[0074] Based on the weighted average value calculated previously, a formula is used to calculate the dynamic threshold of each grounding clamp, so that the dynamic threshold can change according to the changes in current environmental conditions and historical data, ensuring more accurate and effective management. The acquisition of dynamic thresholds can detect potential problems earlier, help take preventive measures in advance, and reduce the risk of failures.

[0075] S3: Compare the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold. If the real-time grounding resistance exceeds the dynamic threshold, execute step S4.

[0076] Specifically, step S3 includes the following steps:

[0077] S31: Read the real-time grounding resistance of the current grounding clamp in real time.

[0078] In this embodiment, a high-precision resistance sensor is installed at each grounding wire clamp to monitor the grounding resistance of the grounding wire clamp in real time. The grounding resistance data of the grounding wire clamp is continuously collected through the resistance sensor to ensure the accuracy and real-time nature of the data. Wireless communication technology or wired communication technology is used to transmit the real-time collected data to the monitoring platform of the grounding wire clamp. After receiving the data, the monitoring platform performs preliminary processing on it, including removing noise and outliers.

[0079] S32: Compare the real-time grounding resistance of the current grounding clamp with the dynamic threshold of the current grounding clamp.

[0080] In this embodiment, the current dynamic threshold of the grounding clamp is obtained from the supervision platform, and the grounding resistance value read in real time is compared with the dynamic threshold.

[0081] S33: If the real-time grounding resistance is greater than the dynamic threshold, it is considered that the real-time grounding resistance of the current grounding clamp exceeds the safety range, and the process goes to step S4; otherwise, the process returns to step S31 and continues to monitor the real-time grounding resistance of the current grounding clamp.

[0082] In this embodiment, when the real-time grounding resistance value exceeds the dynamic threshold, it is necessary to further judge the grounding clamp, that is, enter step S4.

[0083] S4: Calculate a change rate threshold of the grounding clamp, and dynamically adjust the change rate threshold of the grounding clamp based on all real-time grounding resistances to obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on a previous grounding resistance of the grounding clamp.

[0084] Specifically, step S4 includes the following steps:

[0085] S41: obtaining the previous grounding resistance of the current grounding clamp at multiple previous moments, and calculating the change rate according to the previous grounding resistance at each previous moment, wherein the calculation formula of the change rate is: ;

[0086] in, is the rate of change, For the moment Time The previous grounding resistance of the grounding clamp, For the previous moment The previous ground resistance, is the time interval.

[0087] In this embodiment, the grounding resistance values ​​of the current grounding wire clamp at different previous times are obtained, and these values ​​can be recorded and stored in real time by sensors installed on the grounding wire clamp. For each preset time interval, the change rate of the current grounding wire clamp is calculated according to the above formula, and the change rate can reflect the changing trend of the grounding resistance over time.

[0088] S42: averaging the change rates at multiple previous moments to obtain an average change rate, the calculation formula of the average change rate is: ;

[0089] in, is the average rate of change, is the number of previous moments, For the The rate of change at a moment.

[0090] In this embodiment, the change rates obtained from multiple previous moments are collected, and the above formula is used to calculate the average change rate.

[0091] S43: Calculate a weighted average change rate based on the average change rate, and use the weighted average change rate as a change rate threshold, wherein the calculation formula of the weighted average change rate is: ;

[0092] in, is the change rate threshold, is the number of grounding clamps, For the The weight of the grounding clamp.

[0093] In this embodiment, the weight in this step is consistent with the weight determined in step 21, and then the above formula is used to calculate the weighted average change rate. The weighted average change rate takes into account the importance differences of each grounding wire clamp, making the final change rate threshold more reasonable and practical. This method improves the sensitivity of the change rate of important grounding wire clamps and ensures the safe operation of key equipment.

[0094] S44: Calculate the dynamic change rate threshold based on the weighted average value, wherein the calculation formula of the dynamic change rate threshold is: ;

[0095] in, is the dynamic change rate threshold, It is the adjustment factor of the dynamic change rate threshold, which is used to adjust the sensitivity of the dynamic change rate threshold.

[0096] In this embodiment, the dynamic change rate threshold is flexibly adjusted according to the actual working conditions to ensure that it is neither too loose nor too strict; at the same time, by setting an appropriate adjustment factor, the response speed and accuracy of the system can be improved, thereby improving the safety of the entire grounding system.

[0097] S5: within a preset time window, calculating the grounding resistance change rate of the current grounding clamp, and generating fault information in real time when the grounding resistance change rate exceeds a dynamic change rate threshold.

[0098] Specifically, step S5 includes the following steps:

[0099] S51: within a preset time window, the grounding resistance change rate is calculated according to the grounding resistances at both ends of the time window of the current grounding clamp.

[0100] In this embodiment, a time window of a fixed length is defined, such as one minute or five minutes, for calculating the rate of change of the ground resistance. The time window should be short enough to quickly capture the change, but not too short to introduce too much noise.

[0101] At the beginning and end of the preset time window, the real-time grounding resistance value of the grounding clamp is read respectively, and the grounding resistance change rate between these two time points is calculated.

[0102] S52: Compare the current grounding resistance change rate of the grounding clamp with the calculated dynamic change rate threshold.

[0103] In this embodiment, the current grounding resistance change rate of the grounding clamp is obtained in step S51, and the grounding resistance change rate is compared with the dynamic change rate threshold value calculated previously.

[0104] By comparing with the dynamic change rate threshold, it can be determined whether the grounding clamp has abnormal changes. At the same time, the setting of the dynamic change rate threshold enables the system to adapt to different working conditions, thereby improving the accuracy and effectiveness of fault detection.

[0105] S53: If the ground resistance change rate is greater than the dynamic change rate threshold, a fault message is generated and maintenance personnel are notified to perform inspection and repair.

[0106] In this embodiment, if the change rate in step S52 is greater than the dynamic change rate threshold, it is considered that a fault has occurred, the alarm mechanism is triggered, an alarm message is sent to the supervision platform, and the maintenance personnel are notified. After receiving the notification, the maintenance personnel locate the faulty grounding wire clamp according to the alarm information, and conduct on-site inspections and necessary repairs.

[0107] Timely fault detection and alarm mechanisms can respond quickly to prevent the fault from further deteriorating. Through accurate fault location, maintenance time can be significantly shortened and the impact on production can be reduced.

[0108] In addition, the fault information includes the identification of the grounding clamp where the abnormality occurred, the current grounding resistance value, the grounding resistance change rate, and the timestamp of the abnormality.

[0109] In this embodiment, each grounding wire clamp has a unique identifier, such as a number or ID, which is used to distinguish different grounding wire clamps. The grounding wire clamp with a problem can be quickly located based on the identifier, which facilitates subsequent inspection and maintenance.

[0110] The monitoring platform receives the ground resistance data from the resistance sensor in real time, saves the most recent reading, and provides the current ground resistance value to help analyze the status of the grounding clamp.

[0111] The average change rate calculated in step S4 is the ground resistance change rate, which is used to evaluate the speed of the grounding clamp resistance change and understand whether a rapid change occurs.

[0112] Record the time point when the system detects an anomaly to facilitate tracing the exact time of the event and chronologically sorting and analyzing the faults.

[0113] During implementation, when it is detected that the real-time grounding resistance and grounding resistance change rate of a grounding clamp exceed their respective set thresholds, the supervision platform will automatically create a fault message, which will be transmitted to the maintenance personnel's terminal device through the network. The maintenance personnel can view the fault information through a special application or Web interface and take corresponding measures. After receiving the fault information, the maintenance personnel need to go to the site to confirm the actual situation and decide whether the grounding clamp needs to be replaced or repaired based on the specific situation.

[0114] The working principle of the remote management method of an interlocking grounding clamp provided by the present invention is as follows:

[0115] First, the historical grounding resistance data of each grounding clamp under normal conditions is collected and analyzed to calculate the baseline threshold of each grounding clamp, that is, the maximum safe value of grounding resistance allowed under normal conditions. Subsequently, the grounding resistance of each grounding clamp is read in real time, and these baseline thresholds are dynamically adjusted based on all real-time data to adapt to changes in the actual working environment. When the real-time grounding resistance of a grounding clamp exceeds its dynamic threshold, the change trend of the grounding resistance of the grounding clamp will be further analyzed. By calculating the grounding resistance change rate at multiple previous moments, and combining the weighted average and dynamic adjustment factors, a dynamic change rate threshold is obtained. Within the preset time window, if the grounding resistance change rate exceeds this dynamic change rate threshold, detailed fault information is immediately generated, including the grounding clamp's identification, the current grounding resistance value, the grounding resistance change rate, and the timestamp of the abnormality, and the maintenance personnel are immediately notified to carry out necessary inspections and repairs. This process realizes remote real-time monitoring and intelligent management of the electrical safety of grounding clamps, effectively improving the safety and maintenance efficiency of electrical systems.

[0116] Embodiment 2

[0117] The present invention also provides an interlocking grounding clamp remote management system, which is applied to an interlocking grounding clamp remote management method, and is configured with a plurality of grounding clamps that are electrically connected, referring to Figure 2 As shown, the management system includes:

[0118] The baseline threshold calculation module 100 is used to obtain the baseline threshold of each grounding clamp under normal conditions, wherein the baseline threshold represents the maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions.

[0119] The baseline threshold adjustment module 200 is used to read the real-time grounding resistance of each grounding clamp in real time, and dynamically adjust the baseline threshold of each grounding clamp based on all the real-time grounding resistances to obtain the dynamic threshold of each grounding clamp.

[0120] The first threshold comparison module 300 is used to compare the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold, and trigger the change rate threshold adjustment module if the real-time grounding resistance exceeds the dynamic threshold.

[0121] The change rate threshold adjustment module 400 is used to calculate the change rate threshold of the grounding clamp, dynamically adjust the change rate threshold of the grounding clamp based on all real-time grounding resistances, and obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on the previous grounding resistance of the grounding clamp.

[0122] The second threshold comparison module 500 is used to calculate the grounding resistance change rate of the current grounding clamp within a preset time window, and to generate fault information in real time when the grounding resistance change rate exceeds the dynamic change rate threshold.

[0123] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0124] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, the storage medium including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically-erasable programmable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0125] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or includes elements that are inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

Claims

1. A remote management method for interlocked grounding clamps, applied to multiple grounding clamps with electrical connections, characterized in that: The management method comprises the following steps: S1: Under normal conditions, obtaining a baseline threshold of each grounding clamp, wherein the baseline threshold represents a maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions; S2: reading the real-time grounding resistance of each grounding clamp in real time, and dynamically adjusting the baseline threshold of each grounding clamp based on all the real-time grounding resistances to obtain a dynamic threshold of each grounding clamp; Wherein step S2 comprises the following steps: S21: real-time monitoring of the real-time grounding resistance of all grounding clamps, and calculating a weighted average value according to the real-time grounding resistance of all grounding clamps, wherein the calculation formula of the weighted average value is: ; in, is the number of grounding clamps, For the The real-time ground resistance of each grounding clamp, For the The weight of the grounding clamp, is the weighted average; S22: Calculate the dynamic threshold of each grounding clamp based on the weighted average value, wherein the calculation formula of the dynamic threshold is: ; in, For the The dynamic threshold of the ground clamp, For the Baseline threshold for each ground clamp, is the adjustment factor of the dynamic threshold, is the number of environmental parameters, is the number of historical data points, For the The weight of the environmental parameters, For the The value of an environmental parameter, For the The weight of historical data points, For the The value of historical data points, and are the influencing factors of environmental parameters and historical data points, respectively; S3: comparing the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold, and if the real-time grounding resistance exceeds the dynamic threshold, executing step S4; S4: calculating a change rate threshold of the grounding clamp, and dynamically adjusting the change rate threshold of the grounding clamp based on all real-time grounding resistances to obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on a previous grounding resistance of the grounding clamp; Wherein step S4 comprises the following steps: S41: obtaining the previous grounding resistance of the current grounding clamp at multiple previous moments, and calculating the change rate according to the previous grounding resistance at each previous moment, wherein the calculation formula of the change rate is: ; in, is the rate of change, For the moment Time The previous grounding resistance of the grounding clamp, For the previous moment The previous ground resistance, is the time interval; S42: averaging the change rates at multiple previous moments to obtain an average change rate, the calculation formula of the average change rate is: ; in, is the average rate of change, is the number of previous moments, For the The rate of change at a moment; S43: Calculate a weighted average change rate based on the average change rate, and use the weighted average change rate as a change rate threshold, wherein the calculation formula of the weighted average change rate is: ; in, is the change rate threshold, is the number of grounding clamps, For the The weight of the grounding clamp; S44: Calculate the dynamic change rate threshold based on the weighted average value, wherein the calculation formula of the dynamic change rate threshold is: ; in, is the dynamic change rate threshold, is the adjustment factor of the dynamic change rate threshold; S5: calculating the grounding resistance change rate of the current grounding clamp within a preset time window, and generating fault information in real time when the grounding resistance change rate exceeds the dynamic change rate threshold.

2. A remote management method for interlocking grounding clamps according to claim 1, characterized in that: Step S1 includes the following steps: S11: collecting historical grounding resistance data sets of each grounding wire clamp under normal conditions, and calculating a safety factor based on an average value and a standard deviation of the historical grounding resistance data sets, wherein the safety factor represents a coefficient of a maximum grounding resistance increase allowed by the grounding wire clamp under normal conditions; S12: Calculate the maximum safe grounding resistance value of each grounding clamp by combining the average value, the standard deviation and the safety factor, and use it as a baseline threshold.

3. A remote management method for interlocking grounding clamps according to claim 2, characterized in that: Step S3 includes the following steps: S31: Read the real-time grounding resistance of the current grounding clamp in real time; S32: Compare the real-time grounding resistance of the current grounding clamp with the dynamic threshold of the current grounding clamp; S33: If the real-time grounding resistance is greater than the dynamic threshold, it is considered that the real-time grounding resistance of the current grounding clamp exceeds the safety range, and the process goes to step S4; otherwise, the process returns to step S31 and continues to monitor the real-time grounding resistance of the current grounding clamp.

4. A remote management method for interlocking grounding clamps according to claim 3, characterized in that: Step S5 includes the following steps: S51: within a preset time window, calculating the grounding resistance change rate according to the grounding resistances at both ends of the time window of the current grounding clamp; S52: comparing the current grounding resistance change rate of the grounding clamp with the calculated dynamic change rate threshold; S53: If the ground resistance change rate is greater than the dynamic change rate threshold, a fault message is generated and maintenance personnel are notified to perform inspection and repair.

5. A remote management method for interlocking grounding clamps according to claim 4, characterized in that: The fault information includes the identification of the grounding clamp where the abnormality occurs, the current grounding resistance value, the grounding resistance change rate, and the timestamp of the abnormality.

6. A remote management system for interlocking grounding clamps, applied to a remote management method for interlocking grounding clamps as claimed in any one of claims 1 to 5, characterized in that: A plurality of grounding clamps are provided with electrical connections, and the management system comprises: A baseline threshold calculation module, used to obtain a baseline threshold of each grounding clamp under normal conditions, wherein the baseline threshold represents a maximum safe value of the grounding resistance allowed by each grounding clamp under normal conditions; A baseline threshold adjustment module is used to read the real-time grounding resistance of each grounding wire clamp in real time, and dynamically adjust the baseline threshold of each grounding wire clamp based on all the real-time grounding resistances to obtain a dynamic threshold of each grounding wire clamp; The calculation of the dynamic threshold of each grounding clamp includes the following steps: The real-time grounding resistance of all grounding clamps is monitored in real time, and a weighted average value is calculated according to the real-time grounding resistance of all grounding clamps, wherein the calculation formula of the weighted average value is: ; in, is the number of grounding clamps, For the The real-time ground resistance of each grounding clamp, For the The weight of the grounding clamp, is the weighted average; The dynamic threshold of each grounding clamp is calculated based on the weighted average value, wherein the calculation formula of the dynamic threshold is: ; in, For the The dynamic threshold of the ground clamp, For the Baseline threshold for each ground clamp, is the adjustment factor of the dynamic threshold, is the number of environmental parameters, is the number of historical data points, For the The weight of the environmental parameters, For the The value of an environmental parameter, For the The weight of historical data points, For the The value of historical data points, and are the influencing factors of environmental parameters and historical data points, respectively; A first threshold comparison module, used for comparing the real-time grounding resistance of the current grounding clamp with the corresponding dynamic threshold, and triggering the change rate threshold adjustment module if the real-time grounding resistance exceeds the dynamic threshold; a change rate threshold adjustment module, used to calculate a change rate threshold of the grounding clamp, dynamically adjust the change rate threshold of the grounding clamp based on all real-time grounding resistances to obtain a dynamic change rate threshold, wherein the change rate threshold is calculated based on a previous grounding resistance of the grounding clamp; The calculation of the dynamic change rate threshold includes the following steps: The previous grounding resistances of the current grounding clamp at multiple previous moments are obtained, and the change rate is calculated according to the previous grounding resistance at each previous moment. The calculation formula of the change rate is: ; in, is the rate of change, For the moment Time The previous grounding resistance of the grounding clamp, For the previous moment The previous ground resistance, is the time interval; The change rates at multiple previous moments are averaged to obtain an average change rate, and the calculation formula for the average change rate is: ; in, is the average rate of change, is the number of previous moments, For the The rate of change at a moment; A weighted average change rate is calculated based on the average change rate, and the weighted average change rate is used as a change rate threshold, wherein the calculation formula of the weighted average change rate is: ; in, is the change rate threshold, is the number of grounding clamps, For the The weight of the grounding clamp; The dynamic change rate threshold is calculated based on the weighted average value, wherein the calculation formula of the dynamic change rate threshold is: ; in, is the dynamic change rate threshold, is the adjustment factor of the dynamic change rate threshold; The second threshold comparison module is used to calculate the grounding resistance change rate of the current grounding clamp within a preset time window, and to generate fault information in real time when the grounding resistance change rate exceeds the dynamic change rate threshold.

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