Remote control method and device for power distribution cabinet, electronic equipment and storage medium

Abstract

The invention relates to the field of power distribution cabinet control, in particular to a power distribution cabinet remote control method and device, electronic equipment and a storage medium. The method comprises the steps that the current input current and the detailed current distribution rule of the target power distribution cabinet are acquired in real time, and the actual branch output current of each branch is combined, so that the time domain function relation of each branch can be accurately constructed, and the dynamic change of the current in the power distribution cabinet is deeply informed. Furthermore, the current change trend of each branch is predicted based on the current distribution rule, and is compared with the actual time domain function relationship, so that whether each branch of the power distribution cabinet has an abnormality or a fault can be accurately judged, the efficient and stable operation of the power distribution system is ensured, once a potential problem is detected, measures can be taken immediately, fault upgrading is avoided, and the power distribution efficiency is improved. Therefore, the safety and reliability of power supply are effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the field of power distribution cabinet control, and in particular to a method, device, electronic equipment and storage medium for remote control of a power distribution cabinet. Background Art

[0002] The power distribution cabinet plays a vital role in the power system, mainly used to realize the distribution, conversion and protection functions of electric energy. With the improvement of industrial automation and intelligence, the demand for remote monitoring and management of power distribution cabinets is growing. Through remote control, the operating status of the power distribution system can be monitored in real time, and faults can be discovered and handled in time, thereby ensuring the stability and safety of the power system. In addition, remote control can also improve operation and maintenance efficiency, reduce the cost and risk of manual inspections, and improve the overall management level.

[0003] However, the existing technology has shortcomings in fault diagnosis, mainly manifested in the following aspects: the existing fault detection method mainly relies on simple threshold comparison, which is difficult to accurately reflect the dynamic changes of each branch inside the distribution cabinet, resulting in low accuracy of fault diagnosis, prone to misjudgment or missed judgment, thus affecting the reliability of remote control of the distribution cabinet. Therefore, how to improve the accuracy of fault diagnosis has become an urgent problem to be solved. Summary of the invention

[0004] In order to improve the accuracy of fault diagnosis, the present application provides a remote control method, device, electronic device and storage medium for a power distribution cabinet.

[0005] In a first aspect, the present application provides a remote control method for a power distribution cabinet, which adopts the following technical solution: A remote control method for a power distribution cabinet, comprising: Obtain the current input current and current current distribution rule corresponding to the target power distribution cabinet, and obtain the branch output current corresponding to each branch corresponding to the current input current, wherein the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle; Performing time domain analysis on the current input current and the branch output current corresponding to each branch to obtain a time domain function relationship corresponding to each branch of the target power distribution cabinet; Based on the current distribution rule, determining the current change trend corresponding to each branch; Based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch, determine whether the target power distribution cabinet has a fault; If there is no fault in the target power distribution cabinet, the target power distribution cabinet is continuously controlled according to the current current distribution rule.

[0006] By adopting the above technical solution, by obtaining the current input current and detailed current distribution rules of the target distribution cabinet in real time, and combining the actual branch output current of each branch, the time domain function relationship of each branch can be accurately constructed, and the dynamic changes of the current inside the distribution cabinet can be deeply understood. Furthermore, based on the current distribution rules, the current change trend of each branch is predicted, and compared with the actual time domain function relationship, it is possible to accurately determine whether there are abnormalities or faults in each branch of the distribution cabinet, thereby ensuring the efficient and stable operation of the distribution system. Once a potential problem is detected, measures can be taken immediately to avoid fault escalation, thereby effectively ensuring the safety and reliability of power supply.

[0007] In a possible implementation, based on the time domain analysis of the current input current and the branch output current corresponding to each branch to obtain the time domain function relationship corresponding to each branch of the target distribution cabinet, the process of determining the time domain function relationship corresponding to each branch of the target distribution cabinet includes: Calculate the current ratio corresponding to each moment in the current cycle, where the current ratio is the ratio between the branch output current and the input current at the corresponding moment; Based on the current ratio corresponding to each moment in the current cycle, the time domain function relationship of the branch of the target power distribution cabinet is determined.

[0008] By adopting the above technical solution, the dynamic characteristics of the current of each branch of the target distribution cabinet can be accurately captured by calculating the ratio between the branch output current at each moment in the current cycle and the input current at the corresponding moment, that is, the current ratio. It not only provides a direct quantitative relationship between the current of each branch and the total input current, but also based on these current ratios, it can further derive the time domain function relationship of each branch, effectively improving the accuracy and real-time performance of current monitoring. By determining the time domain function relationship, potential current anomalies or faults can be more accurately predicted and identified, so that corresponding measures can be taken in time to ensure the safe and stable operation of the distribution cabinet and the entire power system.

[0009] In a possible implementation, based on the current distribution rule, a current change trend corresponding to each branch is determined, and the process of determining the current change trend corresponding to each branch includes: Based on the current current distribution rule, a target planned output current of the branch corresponding to each moment in a target time period is obtained, wherein the target time period is a time period between the start time of the current cycle and the current moment; Based on the target planned output current corresponding to each moment in the target time period, generating a planned output curve for the target time period; The target slope corresponding to each moment in the planned output curve is determined to obtain the current change trend corresponding to the branch.

[0010] By adopting the above technical solution, based on the current current distribution rules, the target planned output current of each branch at each moment in the target time period is first calculated to ensure the accuracy and timeliness of current distribution, making the operation of the power system more efficient and stable. Next, the planned output curve of the target time period is generated, and then, by determining the target slope at each moment in the planned output curve, the current change trend corresponding to each branch is accurately grasped, which not only improves the prediction ability of current changes, but also provides strong support for the dynamic adjustment and optimization of the power system.

[0011] In a possible implementation, determining whether the target power distribution cabinet has a fault based on a current change trend corresponding to each branch and a time domain function relationship corresponding to each branch includes: Determine the actual change trend of the time domain function relationship corresponding to each branch; Based on the actual change trend corresponding to each branch and the current change trend, determine whether the change trend corresponding to each branch is consistent; If the change trends corresponding to each branch are consistent, it is determined whether the target power distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current.

[0012] By adopting the above technical solution, the actual change trend of the time domain function relationship of each branch can be accurately captured, which helps to understand the inherent law of the current change of each branch over time. Then, by comparing the actual change trend of each branch with the current change trend, it is possible to quickly identify whether there is a deviation or abnormality, so as to preliminarily judge the operating status of the distribution system. When the change trend of all branches is consistent, further comparison of the actual output current of each branch with the planned output current can more accurately locate potential fault points or abnormal conditions. It not only improves the accuracy of fault detection, but also reduces the possibility of false alarms and missed alarms, ensuring the timeliness and effectiveness of fault diagnosis of distribution cabinets.

[0013] In a possible implementation, determining whether the target power distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current includes: Calculate the branch output current corresponding to each branch at each moment and the difference between the planned output current to obtain the target difference corresponding to each branch at each moment; Acquire environmental information corresponding to the target power distribution cabinet, wherein the environmental information includes ambient temperature; Based on the environmental information, determining a difference threshold corresponding to each branch; Determine whether there is a target difference greater than a corresponding difference threshold; If there is no target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault; If there is a target difference that is greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault.

[0014] By adopting the above technical solution, the current difference of each branch at each moment is calculated, which can accurately capture the actual fluctuation of the current and lay a solid foundation for subsequent fault analysis. Then, by obtaining key environmental information such as ambient temperature and dynamically adjusting the difference threshold of each branch, the impact of environmental factors on current fluctuations is fully considered, and the accuracy and adaptability of fault judgment are improved. Then, by comparing the current difference with the difference threshold, it is possible to quickly identify whether there is abnormal current fluctuation, thereby effectively judging the operating status of the distribution cabinet. If the current difference of all branches is within the allowable range, the distribution cabinet is operating normally; otherwise, it indicates that there may be a fault in the distribution cabinet, and timely measures need to be taken to investigate and repair it.

[0015] In a possible implementation, the method further includes: If there are branches with inconsistent change trends, the sum of the branch output currents corresponding to each branch is calculated to obtain the output current sum; Determine whether the current input current is consistent with the output current; If the current input current is consistent with the output current, it is determined that the branch with inconsistent change trends has a fault; If the current input current is inconsistent with the output current, it is determined that a fault exists in the target power distribution cabinet.

[0016] By adopting the above technical solution, when it is detected that the corresponding change trend of a branch is inconsistent, the solution does not immediately determine that the entire distribution cabinet is faulty. Instead, it calculates the sum of the output currents of all branches and compares it with the current input current. If the current input current is consistent with the output current, but the change trends of some branches are inconsistent, this indicates that the problem is likely to be in those branches with abnormal change trends, which may be a fault in the branch itself, such as poor contact, component damage, etc. If the current input current is inconsistent with the output current, it indicates that the distribution cabinet as a whole has problems such as current imbalance or leakage, and a more in-depth troubleshooting of the entire distribution cabinet is required.

[0017] In a second aspect, the present application provides a remote control device for a power distribution cabinet, which adopts the following technical solution: A remote control device for a power distribution cabinet, comprising: An acquisition module is used to acquire the current input current and the current current distribution rule corresponding to the target power distribution cabinet, and acquire the branch output current corresponding to each branch corresponding to the current input current, wherein the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle; An analysis module, used for performing time domain analysis on the current input current and the branch output current corresponding to each branch, so as to obtain a time domain function relationship corresponding to each branch of the target power distribution cabinet; A first determination module, configured to determine a current change trend corresponding to each branch based on the current current distribution rule; A second determination module is used to determine whether the target power distribution cabinet has a fault based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch; A control module is used to continuously control the target power distribution cabinet according to the current current distribution rule if there is no fault in the target power distribution cabinet.

[0018] In a third aspect, the present application provides an electronic device, which adopts the following technical solution: An electronic device, comprising: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the remote control method for a power distribution cabinet as described in the first aspect above.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium includes: storing a computer program that can be loaded by a processor and execute the remote control method for a power distribution cabinet described in the first aspect above.

[0020] In summary, this application includes the following beneficial technical effects: By acquiring the current input current and detailed current distribution rules of the target distribution cabinet in real time, combined with the actual branch output current of each branch, the time domain function relationship of each branch can be accurately constructed, and the dynamic changes of the current inside the distribution cabinet can be deeply understood. Furthermore, by predicting the current change trend of each branch based on the current distribution rules and comparing it with the actual time domain function relationship, it is possible to accurately determine whether there are abnormalities or faults in each branch of the distribution cabinet, thereby ensuring the efficient and stable operation of the distribution system. Once a potential problem is detected, measures can be taken immediately to avoid fault escalation, thereby effectively ensuring the safety and reliability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of a method for remote control of a power distribution cabinet provided in an embodiment of the present application; Figure 2 It is a block diagram of a remote control device for a power distribution cabinet provided in an embodiment of the present application; Figure 3 It is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In order to facilitate understanding of the technical solution proposed in this application, several elements introduced in the description of this application are first introduced here. It should be understood that the following introduction is only for the convenience of understanding these elements, so as to understand the content of the embodiments of this application, and does not necessarily cover all possible situations.

[0025] The power distribution cabinet is a general term for the motor control center and is also the final equipment of the power distribution system. It assembles primary equipment and secondary equipment into a complete set of equipment according to a certain wiring method, and is used to control and protect the lines and equipment. The power distribution cabinet is mainly divided into power distribution cabinet, lighting distribution cabinet, metering cabinet, etc. In addition, it can also be divided into high and low voltage distribution cabinet and low voltage distribution cabinet according to the voltage level.

[0026] The present application embodiment provides a remote control method for a power distribution cabinet, such as Figure 1 As shown, the method provided in the embodiment of the present application is performed by an electronic device, which can be a server or a terminal device, wherein the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, which is not limited in the embodiment of the present application. The method includes steps S101 to S105, wherein: Step S101, obtaining a current input current and a current current distribution rule corresponding to a target power distribution cabinet, and obtaining a branch output current corresponding to each branch corresponding to the current input current.

[0027] Among them, the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle. Specifically, the input current is the total current entering the distribution cabinet. The branch output current is the current output by each branch circuit in the distribution cabinet. The current distribution rule is the rule for distributing the current output of each branch according to the load demand within a specific cycle.

[0028] The input end and each branch output end of the target power distribution cabinet are equipped with current sensors, and the electronic device is connected to each current sensor, and the electronic device can obtain the current value detected by each current sensor. Specifically, the electronic device can read the current input current and the output current of each branch from each current sensor at regular intervals (such as every second), record them, and store them in the database corresponding to the target power distribution cabinet. And obtain the planned output current corresponding to each branch at each moment in the current cycle (such as a day) from the database corresponding to the target power distribution cabinet.

[0029] Step S102: Perform time domain analysis on the current input current and the branch output current corresponding to each branch to obtain a time domain function relationship corresponding to each branch of the target power distribution cabinet.

[0030] Among them, the time domain function relationship is a mathematical function relationship that takes time as the independent variable and reflects the law of change of a certain physical quantity (here is the current ratio) over time.

[0031] After obtaining the current input current and the output current corresponding to each branch, the collected current input current and the branch output current data corresponding to each branch can be transmitted to the data analysis software (which can be professional power data analysis software, such as Matlab and other tools with powerful signal processing and analysis functions). In the data analysis software, the data sequence of the input current and the output current of each branch is processed separately with time as the independent variable. For example, through discrete Fourier transform (DFT), the current data in the time domain is converted into frequency domain data for analysis, and then reversely transformed back to the time domain to more clearly observe the change law of the current over time, so as to obtain the time domain function relationship corresponding to each branch of the target distribution cabinet.

[0032] Step S103: Based on the current distribution rule, determine the current change trend corresponding to each branch.

[0033] The current change trend is the overall situation of the change direction and degree of the current over a period of time. The current change trend can reflect whether the current is gradually increasing, gradually decreasing, or maintaining a relatively stable state. By comparing the changes in the planned output current and the actual output current, it can be determined whether the branch current is distributed as expected, thereby discovering possible problems. In this embodiment, the current change trend is the current change trend corresponding to the current current distribution rule.

[0034] Specifically, based on the current current distribution rule, the planned output current data corresponding to each branch at each moment is obtained, and a curve of the planned output current corresponding to each branch over time is drawn to obtain the current change trend corresponding to each branch. More specifically, office software (such as Microsoft Excel) can be selected to draw the curve to visualize the planned current output data of the target distribution cabinet.

[0035] Furthermore, by observing the curve of the planned output current of each branch over time, the planned current change trend of each branch can be obtained. For example, if the curve shows an upward trend, it means that the planned output current of the branch is gradually increasing during the corresponding time period; if the curve shows a downward trend, it means that the planned output current is gradually decreasing; if the curve is relatively stable, it means that the planned output current remains relatively stable during the time period.

[0036] Step S104: determine whether a target power distribution cabinet has a fault based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch.

[0037] According to the current change trend corresponding to each branch, that is, the curve of the planned output current corresponding to each branch changing with time, combined with the corresponding time domain function relationship of each branch (that is, the change of the actual output current of each branch with time). By comparing the numerical differences and change directions of the current change trend (data in the current current distribution rule) and the actual output current (obtained from the time domain function relationship) at different times, it is determined whether the target distribution cabinet has a fault. For example, if the current change trend of a branch gradually increases over a period of time, but the actual output current shows a situation of increasing first and then decreasing, then it can be judged that the current change trend of the branch does not match the plan.

[0038] Specifically, the curve of the branch output current changing with time corresponding to each branch and the curve of the planned output current changing with time can be combined on the same chart for intuitive comparison, so as to more clearly compare the difference between the two in the direction of change. More specifically, for each branch: the curve of the branch output current changing with time corresponding to the branch is taken as the first curve, and the curve of the planned output current changing with time corresponding to the branch is taken as the second curve, the first discount rate corresponding to the first curve corresponding to the branch and the second discount rate corresponding to the second curve are identified, and based on the first discount rate and the second discount rate corresponding to each moment, it is determined whether the first discount rate and the second discount rate corresponding to the same moment are both positive or both negative, and it is determined that the current change trend of the branch is inconsistent with the plan, that is, if the first discount rate and the second discount rate corresponding to the same moment are both positive or both negative, it is determined that the current change trend of the branch is consistent with the plan; if one of the first discount rate and the second discount rate corresponding to the same moment is a positive value and the other is a negative value, it is determined that the current change trend of the branch is inconsistent with the plan. The method of calculating the discount rate is common knowledge in the art and is not limited in the embodiments of the present application.

[0039] Step S105: If there is no fault in the target power distribution cabinet, the target power distribution cabinet is continuously controlled according to the current current distribution rule.

[0040] When it is determined that there is no fault in the target distribution cabinet, the electronic device sends a continuous working instruction, and the control module of the target distribution cabinet (which can be a built-in intelligent controller or a control unit working in conjunction with the host computer software) receives the continuous working instruction and continues to operate the circuit breakers, contactors and other control elements of each branch according to the pre-set current current distribution rules to ensure that the input current is distributed to each branch as planned, so as to achieve continuous and stable control of the target distribution cabinet. For example, if the current current distribution rule stipulates that a certain branch should output a certain value of current at a certain time, then the control module will use the corresponding control elements (such as adjusting the opening and closing state of the circuit breaker, the suction state of the contactor, etc.) to achieve that the current output of the branch meets the planned requirements.

[0041] Furthermore, when it is determined that a fault exists in the target power distribution cabinet, the electronic device sends a stop-work instruction, and the control module of the target power distribution cabinet receives the stop-work instruction and controls the target power distribution cabinet to stop working.

[0042] The embodiment of the present application provides a remote control method for a distribution cabinet, which can accurately construct the time domain function relationship of each branch by acquiring the current input current and detailed current distribution rules of the target distribution cabinet in real time, and combining the actual branch output current of each branch, and deeply understand the dynamic changes of the current inside the distribution cabinet. Furthermore, based on the current distribution rules, the current change trend of each branch is predicted, and compared with the actual time domain function relationship, it can be accurately judged whether there are abnormalities or faults in each branch of the distribution cabinet, thereby ensuring the efficient and stable operation of the distribution system. Once a potential problem is detected, measures can be taken immediately to avoid fault escalation, thereby effectively ensuring the safety and reliability of power supply.

[0043] A possible implementation of the embodiment of the present application, in the above embodiment, based on the time domain analysis of the current input current and the branch output current corresponding to each branch, to obtain the time domain function relationship corresponding to each branch of the target distribution cabinet, the determination process of the time domain function relationship corresponding to each branch of the target distribution cabinet includes: Calculate the current ratio corresponding to each moment in the current cycle, where the current ratio is the ratio between the branch output current and the input current at the corresponding moment; Based on the current ratio corresponding to each moment in the current cycle, the time domain function relationship of the branch of the target distribution cabinet is determined.

[0044] Among them, the current ratio can reflect the relative proportion of the input current distributed to each branch at a specific moment.

[0045] By calculating the current ratio, we can understand the extent to which each branch obtains electrical energy from the input current at different times, which is helpful for the subsequent analysis of the working status of the branch and its relationship with the overall input current. Specifically, for each moment, the collected branch output current value corresponding to the branch is divided by the input current value corresponding to that moment, so as to obtain the current ratio corresponding to each moment, and in this way, the current ratio corresponding to the branch at each moment in the current cycle is calculated in sequence. For example, at a certain moment, the output current of branch 1 is 5A, and the input current at this moment is 10A, then the current ratio corresponding to branch 1 at this moment is 5A÷10A=0.5.

[0046] Furthermore, after obtaining the current ratio corresponding to the branch at each moment in the current cycle, a mathematical function can be used to describe the change of the current ratio over time. Specifically, the current ratio at each time point is plotted into a curve graph, with the horizontal axis being time and the vertical axis being the current ratio. More specifically, professional drawing software (such as Origin, GraphPad Prism) can be used. The coordinate data containing the time and current ratio can be organized into a specific format (such as a text file, each line containing a time value and a current ratio value, separated by a tab or comma, etc.), and then the option to import data is selected in the software to import the data file into the software workspace. In Origin, specify the time column as the X-axis data and the current ratio column as the Y-axis data, then add a fitting curve, perform data statistical analysis (such as calculating the slope, intercept, correlation coefficient, etc.), and obtain the generated analysis results to obtain a curve graph corresponding to the current ratio corresponding to the branch at each moment in the current cycle, thereby obtaining the time domain function relationship of the branch of the target distribution cabinet.

[0047] A possible implementation of the embodiment of the present application is that in the above embodiment, based on the current distribution rule, the current change trend corresponding to each branch is determined, and the process of determining the current change trend corresponding to each branch includes: Based on the current distribution rule, the target planned output current of the branch at each moment in the target time period is obtained; Based on the target planned output current corresponding to each moment in the target time period, a planned output curve for the target time period is generated; Determine the target slope corresponding to each moment in the planned output curve to obtain the current change trend corresponding to the branch.

[0048] The target time period is the time period between the start time of the current cycle and the current time. Specifically, the branches in the target time period are extracted in the current cycle, that is, the time period between the start time of the current cycle and the current time is selected as the target time period.

[0049] Further, for each branch, after obtaining the target time period, a suitable drawing tool (such as Microsoft Excel, Origin or Matplotlib and other software) can be selected to generate a planned output curve. Specifically, the planned output current corresponding to each moment of the branch within the target time period, that is, the target planned output current, is obtained, and the target planned output current corresponding to each moment is input into the selected drawing tool to obtain the generated planned output curve. Exemplarily, when the selected drawing tool is Excel, a new worksheet is created in Excel. Each moment within the target time period is used as a row title, such as filling in 8 am, 8:15 am, 8:30 am, etc. in chronological order, and the target planned output current value corresponding to the branch is used as the data under the column title. Excel will automatically generate a planned output curve for the target time period based on the selected data area. The curve uses time as the horizontal axis and the target planned output current as the vertical axis.

[0050] After obtaining the planned output curve, the rising, falling or stable trend of the curve can be identified based on the generated planned output curve. For example, if the curve shows a clear upward trend, it means that the planned output current of the branch is gradually increasing in the target time period; if the curve shows a downward trend, it means that the planned output current is gradually decreasing; if the curve is relatively stable, it means that the planned output current remains relatively stable during the time period. Specifically, in order to more accurately determine the current change trend corresponding to the planned output curve, the slope corresponding to each moment in the planned output curve can be calculated as the target slope, and whether the current change trend is rising can be determined based on whether the target slope is positive. More specifically, the slope between two adjacent points (coordinates are (X1, Y1) and (X2, Y2)) can be calculated by the formula K=(Y2-Y1) / (X2-X1), based on which the slope between each two adjacent points can be calculated in turn, so as to more accurately describe the current change trend.

[0051] Furthermore, based on the observation of the curve trend and the slope calculation results, the current change trend of the branch is summarized. For example, it is determined that the current change trend of the branch gradually increases from 8 am to 9 am during the target time period, and then remains relatively stable until the current time (10 am).

[0052] A possible implementation of the embodiment of the present application, in the above embodiment, based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch, determining whether the target power distribution cabinet has a fault includes: Determine the actual change trend of the time domain function relationship corresponding to each branch; Based on the actual change trend corresponding to each branch and the current change trend, determine whether the change trend corresponding to each branch is consistent; If the change trends corresponding to each branch are consistent, it is determined whether the target distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current.

[0053] After obtaining the time domain function relationship corresponding to each branch, the time domain function relationship can be expressed in the form of a curve, and the actual change trend can be determined by observing these curves. For example, check whether the curve is rising (meaning that the relevant parameters are increasing over time), falling (the relevant parameters are decreasing) or relatively stable (the parameters remain basically unchanged). Furthermore, the slope corresponding to each moment in the curve corresponding to the time domain function relationship can be calculated as the time domain slope, and based on whether the time domain slope is a positive value, it can be determined whether the current change trend is rising. Among them, the method of calculating the time domain slope is consistent with the above-mentioned method of calculating the target slope, and the embodiments of the present application will not be repeated here.

[0054] Furthermore, after obtaining the actual change trend of the time domain function relationship corresponding to each branch, the actual change trend of the time domain function relationship corresponding to the branch (such as the rising, falling or stable trend observed from the curve) can be compared with the previously determined current change trend (such as the increase and decrease trend of the current over time obtained based on the planned output current curve). Specifically, the branch number, actual change trend and current change trend can be listed one by one in the form of a table for intuitive comparison. If the two trends are basically the same in terms of the increase and decrease direction and the rate of change, the change trends are considered to be consistent; if there are obvious differences in these aspects, such as one is an upward trend and the other is a downward trend, or one changes drastically and the other is relatively stable, it is determined that the change trends are inconsistent.

[0055] When the change trends corresponding to each branch are consistent, the branch output current and planned output current at the same time are obtained from the database corresponding to the target distribution cabinet, and the difference between the branch output current and the planned output current at each moment is calculated. For example, if the planned output current of a branch at a certain moment is 10A, and the actual branch output current is 9A, then the current difference at this moment is 1A. If the current difference at most moments is within this threshold range during the target time period, it can usually be considered that the distribution cabinet is operating normally; if the current difference exceeds the threshold at many moments, or the current difference is too large at certain moments, it may indicate that there is a fault in the distribution cabinet. Among them, a reasonable current difference threshold can be set according to the specific parameters and operating requirements of the distribution cabinet, and the embodiments of the present application are not limited to this. For example, the current difference threshold is set to 10% of the planned output current. When the current difference of a branch exceeds this threshold for a large number of times, it is necessary to further check whether the branch has a fault.

[0056] A possible implementation of the embodiment of the present application, in the above embodiment, based on the branch output current corresponding to each branch and the planned output current, determining whether the target power distribution cabinet has a fault includes: Calculate the branch output current corresponding to each branch at each moment and the difference between the planned output current to obtain the target difference corresponding to each branch at each moment; Obtain the environmental information corresponding to the target power distribution cabinet, including the ambient temperature; Based on the environmental information, determine the difference threshold corresponding to each branch; Determine whether there is a target difference greater than a corresponding difference threshold; If there is no target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault; If there is a target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault.

[0057] Specifically, the branch output current and planned output current data of each branch at each time are obtained from the database corresponding to the target power distribution cabinet. For each branch at each time, the branch output current value at that time is subtracted from the planned output current value. The result is the target difference corresponding to the branch at that time. In this way, the target difference of each branch at each time is calculated in sequence. For example, at 9 am, the branch output current of a branch is 12A, and the planned output current is 10A. Then the target difference corresponding to the branch at 9 am is 12A-10A=2A.

[0058] Specifically, the electronic device obtains data from environmental sensors (such as temperature sensors, humidity sensors, etc.) installed in the environment where the power distribution cabinet is located to obtain the ambient temperature collected by the environmental sensors in real time and record it. Ensure the accuracy and timeliness of the data for subsequent analysis and use. For example, the electronic device receives new ambient temperature data at regular intervals (such as every 5 minutes) and updates the stored ambient temperature value.

[0059] Generally speaking, different ambient temperatures may affect the performance of electrical components in the power distribution cabinet, and thus affect the transmission and distribution of current, so the difference threshold can be adjusted according to the temperature change. For example, when the ambient temperature is between 0℃-20℃, the difference threshold corresponding to each branch is 10% of the planned output current of the branch; when the ambient temperature is between 20℃-40℃, the difference threshold is adjusted to 12% of the planned output current of the branch; when the ambient temperature is higher than 40℃, the difference threshold becomes 15% of the planned output current of the branch. According to the above preset rules, the difference threshold corresponding to each branch is calculated according to the currently obtained ambient temperature value, and such calculation is performed for each branch to determine the difference threshold corresponding to each branch. For example, the current ambient temperature is 25℃, and the planned output current of a branch is 20A. According to the preset rules, the difference threshold corresponding to the branch is 20A×12%=2.4A.

[0060] Furthermore, the target difference corresponding to each branch at each moment calculated previously is compared one by one with the difference threshold corresponding to each branch determined according to the environmental information. For example, for a certain branch, the target difference corresponding to it at 9 am (such as 2A) is compared with the difference threshold corresponding to the branch at the current ambient temperature (such as 2.4A). Furthermore, by comparing the target difference and difference threshold of each branch at each moment one by one, it is determined whether there is a situation where the target difference is greater than the corresponding difference threshold. If it is found in the comparison process that the target difference of any branch at any moment is greater than its corresponding difference threshold, it is determined that there is such an over-standard situation; otherwise, it is determined that there is no over-standard situation. For example, after checking the target difference of all branches at all times, it is found that only the target difference (3A) of a certain branch at 3 pm is greater than its corresponding difference threshold (2.4A), then it is determined that there is a situation where the target difference is greater than the corresponding difference threshold.

[0061] Furthermore, according to the result of comparing the target difference and the difference threshold in the previous step, a judgment conclusion is made as to whether the target power distribution cabinet has a fault. If it is found through comparison that there is no case where the target difference is greater than the corresponding difference threshold, then the electronic device determines that there is no fault in the target power distribution cabinet, and can output corresponding prompt information (such as "the target power distribution cabinet is operating normally"); if there is a case where the target difference is greater than the corresponding difference threshold, then the electronic device determines that there is a fault in the target power distribution cabinet, and can also output corresponding prompt information (such as "the target power distribution cabinet has a fault, please check the relevant branches").

[0062] Furthermore, when it is determined that there is a fault in the distribution cabinet, relevant fault information can be further recorded, such as which branches have the target difference greater than the difference threshold at which time, so that subsequent maintenance personnel can conduct more in-depth inspection and maintenance. For example, these fault information can be stored in the database corresponding to the target distribution cabinet. The recording format can be: branch number, time when the excess condition occurs, excess difference, and other information.

[0063] A possible implementation manner of the embodiment of the present application, in the above embodiment, the method further includes: If there are branches with inconsistent change trends, the sum of the branch output currents corresponding to each branch is calculated to obtain the output current sum; Determine whether the current input current is consistent with the output current; If the current input current is consistent with the output current, it is determined that the branch with inconsistent change trends has a fault; If the current input current and output current are inconsistent, it is determined that the target power distribution cabinet has a fault.

[0064] When there are inconsistent change trends corresponding to branches, for the branches with inconsistent change trends, the branch output current data corresponding to each branch at each moment in the target time period is obtained from the database corresponding to the target distribution cabinet, and the branch output current data corresponding to each branch with inconsistent change trends are added together to obtain the output current sum. For example, if it is determined that the change trends of branches 1, 2, and 3 are inconsistent, the output current of branch 1 at the current moment is 5A, that of branch 2 is 3A, and that of branch 3 is 2A, then the output current sum is 5A+3A+2A=10A.

[0065] Further, the current input current value obtained is compared with the output current sum calculated previously. For example, the output current sum calculated previously is 10A, and the current input current is 12A. The two values ​​are directly compared to determine whether they are consistent. When it is found through comparison that the current input current is consistent with the output current sum, it is determined that the branch with inconsistent change trends has a fault. Under normal circumstances, if all branches are working normally, the input current should be distributed to each branch according to a certain distribution rule so that the sum of the output currents of each branch is equal to the input current. Although the input current and the output current sum are equal in value, there are inconsistent change trends in the branches, which indicates that the current distribution of these branches is abnormal, so it is determined that these branches have faults. For example, if it is determined that the change trends of branch 1, branch 2 and branch 3 are inconsistent, and the current input current is consistent with their output current sum, then it is determined that branch 1, branch 2 and branch 3 have faults.

[0066] Furthermore, the relevant information about these faulty branches can be recorded in the database corresponding to the target power distribution cabinet, so that the subsequent maintenance personnel can conduct investigation and repair. For example, the number of the faulty branch, the time of the fault (which can be the current time or the time within a specific time period), the specific situation of the inconsistent change trend (such as the actual change trend of the time domain function relationship and the difference description of the current change trend) and other information can be recorded.

[0067] When the current input current is inconsistent with the output current, this indicates that there is a more serious problem with the current distribution of the entire distribution cabinet. Not only are the change trends of some branches inconsistent, but there may be other factors that affect the normal distribution of the input current, resulting in the input current and output current being unequal. Therefore, it is determined that the target distribution cabinet is faulty at this time. For example, if the current input current is 12A, and the calculated output current sum is 10A, this inconsistency indicates that the distribution cabinet is faulty.

[0068] Similarly, relevant information about the distribution cabinet failure can be recorded in the database corresponding to the target distribution cabinet, such as the current input current value, the calculated output current and value, the time of the failure (the current moment or the time within a specific time period), etc. This information can be stored in a local database or log file for subsequent maintenance personnel to conduct investigation and maintenance.

[0069] The above-mentioned embodiment introduces a remote control method for a power distribution cabinet from the perspective of a method flow, and the following embodiment introduces a remote control device for a power distribution cabinet from the perspective of a virtual module or a virtual unit. For details, please refer to the following embodiment.

[0070] See also Figure 2 The power distribution cabinet remote control device 20 may specifically include: an acquisition module 201, an analysis module 202, a first determination module 203, a second determination module 204 and a control module 205. Specifically: A remote control device 20 for a power distribution cabinet, comprising: The acquisition module 201 is used to obtain the current input current and the current current distribution rule corresponding to the target distribution cabinet, and obtain the branch output current corresponding to each branch corresponding to the current input current, the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle; The analysis module 202 is used to perform time domain analysis on the current input current and the branch output current corresponding to each branch to obtain the time domain function relationship corresponding to each branch of the target power distribution cabinet; A first determination module 203, used to determine the current change trend corresponding to each branch based on the current current distribution rule; The second determination module 204 is used to determine whether there is a fault in the target power distribution cabinet based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch; The control module 205 is used to continuously control the target power distribution cabinet according to the current current distribution rule if there is no fault in the target power distribution cabinet.

[0071] In a possible implementation of the embodiment of the present application, the analysis module 202 performs time domain analysis on the current input current and the branch output current corresponding to each branch to obtain the time domain function relationship corresponding to each branch of the target distribution cabinet. The determination process of the time domain function relationship corresponding to each branch of the target distribution cabinet can be specifically used for: Calculate the current ratio corresponding to each moment in the current cycle, where the current ratio is the ratio between the branch output current and the input current at the corresponding moment; Based on the current ratio corresponding to each moment in the current cycle, the time domain function relationship of the branch of the target distribution cabinet is determined.

[0072] In a possible implementation of the embodiment of the present application, the first determination module 203 determines the current change trend corresponding to each branch based on the current distribution rule. When determining the current change trend corresponding to each branch, the process can be specifically used to: Based on the current current distribution rule, the target planned output current of the branch corresponding to each moment in the target time period is obtained, and the target time period is the time period from the start time of the current cycle to the current moment; Based on the target planned output current corresponding to each moment in the target time period, a planned output curve for the target time period is generated; Determine the target slope corresponding to each moment in the planned output curve to obtain the current change trend corresponding to the branch.

[0073] In a possible implementation of the embodiment of the present application, when the second determination module 204 determines whether the target power distribution cabinet has a fault based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch, it can be specifically used to: Determine the actual change trend of the time domain function relationship corresponding to each branch; Based on the actual change trend corresponding to each branch and the current change trend, determine whether the change trend corresponding to each branch is consistent; If the change trends corresponding to each branch are consistent, it is determined whether the target distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current.

[0074] In a possible implementation of the embodiment of the present application, when the second determination module 204 determines whether the target power distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current, it can be specifically used to: Calculate the branch output current corresponding to each branch at each moment and the difference between the planned output current to obtain the target difference corresponding to each branch at each moment; Obtain the environmental information corresponding to the target power distribution cabinet, including the ambient temperature; Based on the environmental information, determine the difference threshold corresponding to each branch; Determine whether there is a target difference greater than a corresponding difference threshold; If there is no target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault; If there is a target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault.

[0075] In a possible implementation of the embodiment of the present application, the remote control device 20 for a power distribution cabinet further includes: A calculation module, used for calculating the sum of branch output currents corresponding to each branch to obtain a sum of output currents if the change trends corresponding to the branches are inconsistent; A third determination module is used to determine whether the current input current is consistent with the output current; A fourth determination module is used to determine that a branch with inconsistent change trends has a fault if the current input current is consistent with the output current; The fifth determination module is used to determine that a fault exists in the target power distribution cabinet if the current input current is inconsistent with the output current.

[0076] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0077] See also Figure 3 , the embodiment of the present application also introduces an electronic device from the perspective of a physical device, such as Figure 3 As shown, Figure 3 The electronic device 30 shown includes: a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 30 may also include a transceiver 304. It should be noted that in actual applications, the transceiver 304 is not limited to one, and the structure of the electronic device 30 does not constitute a limitation on the embodiments of the present application.

[0078] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0079] The bus 302 may include a path to transmit information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0080] The memory 303 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0081] The memory 303 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the contents shown in the above method embodiment.

[0082] The electronic devices include but are not limited to: mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc., and can also be servers, etc. Figure 3 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0083] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding content in the aforementioned method embodiment.

[0084] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0085] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A remote control method for a power distribution cabinet, characterized in that: include: Obtain the current input current and current current distribution rule corresponding to the target power distribution cabinet, and obtain the branch output current corresponding to each branch corresponding to the current input current, wherein the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle; Performing time domain analysis on the current input current and the branch output current corresponding to each branch to obtain a time domain function relationship corresponding to each branch of the target power distribution cabinet; Based on the current distribution rule, determining the current change trend corresponding to each branch; Based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch, determine whether the target power distribution cabinet has a fault; If there is no fault in the target power distribution cabinet, the target power distribution cabinet is continuously controlled according to the current current distribution rule.

2. The remote control method for a power distribution cabinet according to claim 1, characterized in that: Based on the time domain analysis of the current input current and the branch output current corresponding to each branch, to obtain the time domain function relationship corresponding to each branch of the target power distribution cabinet, the determination process of the time domain function relationship corresponding to each branch of the target power distribution cabinet includes: Calculate the current ratio corresponding to each moment in the current cycle, where the current ratio is the ratio between the branch output current and the input current at the corresponding moment; Based on the current ratio corresponding to each moment in the current cycle, the time domain function relationship of the branch of the target power distribution cabinet is determined.

3. The remote control method for a power distribution cabinet according to claim 1 or 2, characterized in that: The current change trend corresponding to each branch is determined based on the current distribution rule, and the process of determining the current change trend corresponding to each branch includes: Based on the current current distribution rule, a target planned output current of the branch corresponding to each moment in a target time period is obtained, wherein the target time period is a time period between the start time of the current cycle and the current moment; Based on the target planned output current corresponding to each moment in the target time period, generating a planned output curve for the target time period; The target slope corresponding to each moment in the planned output curve is determined to obtain the current change trend corresponding to the branch.

4. The remote control method for a power distribution cabinet according to claim 3, characterized in that: The determining whether the target power distribution cabinet has a fault based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch includes: Determine the actual change trend of the time domain function relationship corresponding to each branch; Based on the actual change trend corresponding to each branch and the current change trend, determine whether the change trend corresponding to each branch is consistent; If the change trends corresponding to each branch are consistent, it is determined whether the target power distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current.

5. The remote control method for a power distribution cabinet according to claim 4, characterized in that: The determining whether the target power distribution cabinet has a fault based on the branch output current corresponding to each branch and the planned output current includes: Calculate the branch output current corresponding to each branch at each moment and the difference between the planned output current to obtain the target difference corresponding to each branch at each moment; Acquire environmental information corresponding to the target power distribution cabinet, wherein the environmental information includes ambient temperature; Based on the environmental information, determining a difference threshold corresponding to each branch; Determine whether there is a target difference greater than a corresponding difference threshold; If there is no target difference greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault; If there is a target difference that is greater than the corresponding difference threshold, it is determined that the target power distribution cabinet has a fault.

6. The remote control method for a power distribution cabinet according to claim 4, characterized in that: The method further comprises: If there are branches with inconsistent change trends, the sum of the branch output currents corresponding to each branch is calculated to obtain the output current sum; Determining whether the current input current is consistent with the output current; If the current input current is consistent with the output current, it is determined that the branch with inconsistent change trends has a fault; If the current input current is inconsistent with the output current, it is determined that a fault exists in the target power distribution cabinet.

7. A remote control device for a power distribution cabinet, characterized in that: include: An acquisition module is used to acquire the current input current and the current current distribution rule corresponding to the target power distribution cabinet, and acquire the branch output current corresponding to each branch corresponding to the current input current, wherein the current input current includes the input current corresponding to each moment in the current cycle, and the current current distribution rule is the planned output current corresponding to each branch at each moment in the current cycle; An analysis module, used for performing time domain analysis on the current input current and the branch output current corresponding to each branch, so as to obtain a time domain function relationship corresponding to each branch of the target power distribution cabinet; A first determination module, configured to determine a current change trend corresponding to each branch based on the current current distribution rule; A second determination module is used to determine whether the target power distribution cabinet has a fault based on the current change trend corresponding to each branch and the time domain function relationship corresponding to each branch; A control module is used to continuously control the target power distribution cabinet according to the current current distribution rule if there is no fault in the target power distribution cabinet.

8. An electronic device, characterized in that: The electronic device includes: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the remote control method for a power distribution cabinet according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed in a computer, the computer is caused to execute the remote control method for a power distribution cabinet according to any one of claims 1 to 6.

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