Circuit mixed connection troubleshooting method, device and equipment based on single-phase electric energy meter screening
By analyzing the combined neutral and live current values of single-phase energy meters, abnormal energy meters are screened and cross-checked, solving the problem of difficult identification of mixed circuits in users' internal circuits, and achieving efficient troubleshooting of mixed circuits and elimination of safety hazards.
Patent Information
- Application Number
- CN202511539452.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-03-17
AI Technical Summary
Existing technologies are insufficient to effectively identify and investigate mixed-connection behavior of single-phase electricity meter circuits in users' internal wiring, leading to the problem of evading tiered electricity pricing.
By analyzing the total neutral current and total live current of each single-phase energy meter in the target area within a preset time period, abnormal single-phase energy meters are screened out and cross-compared to identify abnormal single-phase energy meter combinations that may have circuit misconnections, and further verify whether circuit misconnections exist.
It improves the accuracy of troubleshooting mixed circuit connections, enables timely detection and elimination of mixed circuit connections, standardizes the power supply environment and power consumption order, and reduces electricity cost losses.
Smart Images
Figure CN121679461A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power systems, and in particular to a circuit mixed connection troubleshooting method, device and equipment based on single-phase electric energy meter screening. BACKGROUND
[0002] Residential tiered electricity pricing is a pricing mechanism in which electricity prices increase step by step in a ladder shape with the increase of electricity consumption. The purpose of implementation is to promote the construction of a resource-saving and environment-friendly society, and to guide residents to use electricity reasonably and save electricity. Due to different conditions in different places, the specific electricity consumption and electricity price standards also differ. Some users will mix the circuits of two single-phase electric energy meters in order to save electricity charges, thereby sharing the electricity consumption, so that the electricity consumption of each electric energy meter is in the low range all year round, thereby avoiding tiered electricity pricing. Such circuit mixing not only easily causes safety hazards, but also causes electricity charge losses to power supply enterprises, and seriously damages the power supply environment and order.
[0003] The main way to troubleshoot the problem of residents mixing single-phase electric energy meters and avoiding tiered electricity pricing is to conduct regular business surveys. Power supply enterprises will develop a detailed troubleshooting plan in combination with the distribution characteristics of users in the jurisdiction, first divide the responsibility grid according to the region, list old communities, dense rental areas and other high-risk areas as key objects, and then set a periodic inspection frequency of every quarter or half year, and achieve electricity inspection of all users in the jurisdiction by checking the property lines within the power supply enterprise.
[0004] However, since circuit mixing often occurs in the internal circuit of the user side, and business surveys are often only for the property lines of power supply enterprises, it is difficult to identify the internal lines of users, so it is difficult to effectively deal with such irregular electricity consumption behavior. SUMMARY
[0005] The embodiments of the present application provide a circuit mixed connection troubleshooting method, device and equipment based on single-phase electric energy meter screening, to solve the problem that business surveys are only for the property lines of power supply enterprises, it is difficult to identify the internal lines of users, so it is difficult to effectively deal with such irregular electricity consumption behavior.
[0006] In a first aspect, the embodiments of the present application provide a circuit mixed connection troubleshooting method based on single-phase electric energy meter screening, comprising: Based on the zero line current total value and the fire line current total value of each single-phase electric energy meter in the target area within a preset time period, a plurality of abnormal single-phase electric energy meters are screened out; The zero-line current aggregate value and the fire-line current aggregate value of each abnormal single-phase electric energy meter are cross-compared with the zero-line current aggregate value and the fire-line current aggregate value of the remaining abnormal single-phase electric energy meters, and an abnormal single-phase electric energy meter combination is determined according to a cross-comparison result; wherein the abnormal single-phase electric energy meter combination includes two abnormal single-phase electric energy meters that may exist in circuit misconnection. The zero-line current values and the fire-line current values of the two abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination at multiple preset time points within the preset time period are compared, and whether the abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination exist in circuit misconnection is determined according to a comparison result.
[0007] In a second aspect, an embodiment of the present application provides a circuit misconnection troubleshooting device based on single-phase electric energy meter screening, comprising: A screening module is configured to screen a plurality of abnormal single-phase electric energy meters based on the zero-line current aggregate value and the fire-line current aggregate value of each single-phase electric energy meter in a target area within a preset time period. A cross-comparison module is configured to cross-compare the zero-line current aggregate value and the fire-line current aggregate value of each abnormal single-phase electric energy meter with the zero-line current aggregate value and the fire-line current aggregate value of the remaining abnormal single-phase electric energy meters, and determine an abnormal single-phase electric energy meter combination according to a cross-comparison result; wherein the abnormal single-phase electric energy meter combination includes two abnormal single-phase electric energy meters that may exist in circuit misconnection. A comparison module is configured to compare the zero-line current values and the fire-line current values of the two abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination at multiple preset time points within the preset time period, and determine whether the abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination exist in circuit misconnection according to a comparison result.
[0008] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory and a processor, the memory stores a computer program, and the processor implements the method in the first aspect or any possible implementation manner of the first aspect when executing the computer program.
[0009] In the embodiment of the present application, the zero-point current total value and the firewire current total value of each single-phase electric energy meter in the target transformer area within a preset time period are screened to obtain a plurality of abnormal single-phase electric energy meters, and the zero-line current total value and the firewire current total value of each abnormal single-phase electric energy meter are cross-compared with the zero-line current total value and the firewire current total value of the remaining abnormal single-phase electric energy meters, so as to determine the abnormal single-phase electric energy meter combination according to the cross comparison result. Through the analysis and calculation of the current value, the abnormal single-phase electric energy meter combination with circuit mixing phenomenon can be quickly determined. Through the zero-line current total value and the firewire current total value of each single-phase electric energy meter in the abnormal single-phase electric energy meter combination within a preset time period, it is further verified whether each single-phase electric energy meter in the abnormal single-phase electric energy meter combination has circuit mixing, which can ensure the accuracy of the investigation result, timely find the circuit mixing phenomenon, and find the single-phase electric energy meter with circuit mixing, so as to eliminate the safety hidden danger caused by circuit mixing and the electricity fee loss caused to the power supply enterprise, and further standardize the power supply environment and the power consumption order. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 is the application scenario diagram of the circuit mixing investigation method based on single-phase electric energy meter screening provided by the embodiment of the present application; Figure 2 is the implementation flowchart of the circuit mixing investigation method based on single-phase electric energy meter screening provided by the embodiment of the present application; Figure 3 is the implementation flowchart of step S120 of the circuit mixing investigation method based on single-phase electric energy meter screening provided by the embodiment of the present application; Figure 4 is the implementation flowchart of step S130 of the circuit mixing investigation method based on single-phase electric energy meter screening provided by the embodiment of the present application; Figure 5 is the structural schematic diagram of the circuit mixing investigation device based on single-phase electric energy meter screening provided by the embodiment of the present application; Figure 6 is the schematic diagram of the electronic device provided by the embodiment of the present application. DETAILED DESCRIPTION
[0011] The embodiment of the present application will be described in detail below with reference to the drawings.
[0012] Figure 1 The application scenario diagram of the circuit mixing investigation method based on single-phase electric energy meter screening provided by the embodiment of the present application is shown in FIG. Figure 1 After the circuit mixing of the single-phase electric energy meter is performed, the user side can be connected with two single-phase electric energy meters, and can self-select the power supply of which electric energy meter to use, as shown in FIG. Figure 1Electricity meter 1 and electricity meter 2 are connected in a mixed circuit. The live wire current can reach the same user side through electricity meter 1 and electricity meter 2, and the neutral wire current on the same user side can reach the neutral wire through electricity meter 1 and electricity meter 2.
[0013] See Figure 2 The document illustrates a flowchart of the circuit misconnection investigation method based on single-phase energy meter screening provided by an embodiment of the present invention, detailed below: Step S110: Based on the total neutral current and total live current of each single-phase energy meter in the target area within a preset time period, select multiple abnormal single-phase energy meters.
[0014] It should be noted that during normal electricity use, the neutral current and live current of the corresponding single-phase electricity meter are equal at each moment. However, after two single-phase electricity meters are connected in a mixed circuit, assuming the mixed-circuit meters are meter 1 and meter 2, the neutral current and live current of meter 1 are not equal, and the neutral current and live current of meter 2 are also not equal. Moreover, the sum of the neutral currents of meter 1 and meter 2 equals the sum of the live currents of meter 1 and meter 2. Therefore, based on this principle, single-phase electricity meters with mixed circuits can be identified by collecting the recorded values of live and neutral currents at each moment. Abnormal single-phase electricity meters are those that may have mixed circuits. In other words, when a household uses one meter normally (meter 1 is connected to user 1, and meter 2 is connected to user 2), the current relationship of the electricity meters at each moment is as follows:
[0015]
[0016] Wherein, is the live wire current value recorded by electricity meter 1, is the neutral wire current value recorded by electricity meter 1, is the live wire current value recorded by electricity meter 2, and is the neutral wire current value recorded by electricity meter 2.
[0017] When two electricity meters (electricity meter 1 and electricity meter 2) are connected in a mixed circuit, the current relationship is as follows:
[0018]
[0019]
[0020] In one possible implementation, a single-phase energy meter in which the total value of the neutral wire current and the total value of the live wire current within a preset time period in the target transformer area are not equal is identified as an abnormal single-phase energy meter.
[0021] In one possible implementation, the sum of the neutral current values of each single-phase energy meter at each preset moment within a preset time period is the total neutral current value of the corresponding single-phase energy meter within the preset time period; the sum of the live current values of each single-phase energy meter at each preset moment within a preset time period is the total live current value of the corresponding single-phase energy meter within the preset time period.
[0022] In some embodiments, the preset time period can be from 0:00 to 23:00 on the same day, or it can be any other time period. The shorter the preset time period, the more promptly a meter with a mixed circuit can be detected. However, to avoid increasing the workload, the length of the preset time period can be set to one day. Each preset time can be all the hourly times recorded within the preset time period. For example, when the preset time period is from 0:00 to 23:00, the thermal current value and neutral current value will be recorded at 0:00, 1:00, 2:00, ..., 23:00, totaling 24 hourly times. Alternatively, several times can be randomly selected from the preset time period as preset times.
[0023] It should be noted that the live wire current and neutral wire current records of all electricity meters in a distribution area (the transformer and the load connected to its low-voltage side are collectively referred to as a distribution area unit) from 0:00 to 23:00 on the same day are exported through the power company's internal user information collection system. The total live wire current and total neutral wire current of each electricity meter at 24:00 are then calculated. Because the live wire current and neutral wire current values of a single-phase electricity meter are not equal at each moment when a circuit misconnection occurs, the total live wire current and total neutral wire current values of a single-phase electricity meter with a circuit misconnection will also be unequal. That is:
[0024] in, Let be the live wire current value recorded by the electricity meter at time i. This represents the neutral current value recorded by the energy meter at time i. In summary, single-phase energy meters where the total live wire current and the total neutral wire current over a preset time period are not equal may have experienced circuit mixing with other energy meters. These single-phase energy meters can be identified as abnormal single-phase energy meters.
[0025] Step S120: Cross-compare the total neutral current and total live current of each abnormal single-phase energy meter with the total neutral current and total live current of the remaining abnormal single-phase energy meters, and determine the abnormal single-phase energy meter combination based on the cross-compare results; wherein, the abnormal single-phase energy meter combination includes two abnormal single-phase energy meters that may have mixed circuits.
[0026] In some embodiments, cross-comparison refers to comparing any two abnormal single-phase energy meters, adding the sum of the neutral wire current of the two abnormal single-phase energy meters to the sum of the live wire current, and determining whether the difference meets the requirements. If the requirements are met, the two abnormal single-phase energy meters may have a circuit misconnection.
[0027] See Figure 3 The specific implementation of step S120 above includes steps S1201-S1203, as detailed below: Step S1201: Add the total neutral current of the first abnormal single-phase energy meter to the total neutral current of the second abnormal single-phase energy meter to obtain the first neutral current sum value; wherein, the first abnormal single-phase energy meter is any abnormal single-phase energy meter; the second abnormal single-phase energy meter is any abnormal single-phase energy meter other than the first abnormal single-phase energy meter.
[0028] In some embodiments, the first abnormal single-phase energy meter is any one of the abnormal single-phase energy meters, and the second abnormal single-phase energy meter is any one of the abnormal single-phase energy meters other than the first abnormal single-phase energy meter. By comparing the total live wire current and the total neutral wire current of each first abnormal single-phase energy meter and each second abnormal single-phase energy meter, the combination of abnormal single-phase energy meters can be effectively determined. Assuming the first abnormal single-phase energy meter is energy meter A and the second abnormal single-phase energy meter is energy meter B, then the sum of the first neutral wire current is... , This is the total neutral current of electricity meter A. This is the total neutral wire current of electricity meter B. Let i be the neutral current value recorded by electricity meter A at time i. Let be the neutral current value recorded by electricity meter B at time i.
[0029] Step S1202: Add the sum of the live wire currents of the first abnormal single-phase energy meter and the sum of the live wire currents of the second abnormal single-phase energy meter to obtain the sum of the first live wire currents, and calculate the first difference between the sum of the first neutral wire currents and the sum of the first live wire currents.
[0030] In some embodiments, assuming the first abnormal single-phase energy meter is energy meter A and the second abnormal single-phase energy meter is energy meter B, then the sum of the first live wire currents is... , This is the total live wire current value for electricity meter A. This is the total live wire current value of electricity meter B. Let be the live wire current value recorded by electricity meter A at time i. Let be the live wire current value recorded by energy meter B at time i. The first difference is the difference between the sum of the first zero-point current and the sum of the first live wire current. If the first abnormal single-phase energy meter is energy meter A and the second abnormal single-phase energy meter is energy meter B, then the first difference is . .
[0031] Step S1203: Determine all the first differences as cross-comparison results, and based on the cross-comparison results, determine the abnormal single-phase energy meter combination.
[0032] In some embodiments, the cross-comparison results include all the first differences calculated after comparing each pair of all abnormal single-phase energy meters. The abnormal single-phase energy meter combination includes two abnormal single-phase energy meters that may have had circuit misconnections.
[0033] In one possible implementation, step S1203 is implemented as follows: for any first difference in the cross-comparison results, if the absolute value of the first difference is not greater than a first preset threshold, then the first abnormal single-phase energy meter and the second abnormal single-phase energy meter corresponding to the first difference are determined as a combination of abnormal single-phase energy meters.
[0034] In some embodiments, the first preset threshold can be dynamically set by combining the current measurement accuracy error range of the single-phase energy meter in the target distribution area and referring to the normal difference data in historical mixed connection cases, so as to adapt to the characteristics of different distribution area equipment and improve the accuracy of judgment. For ease of calculation, the first preset threshold can also be directly set to 0.5A. When the absolute value of the first difference is not greater than the first preset threshold, it means that the sum of the live wire current of the first abnormal single-phase energy meter and the sum of the live wire current of the second abnormal single-phase energy meter in the preset time period is equal to the sum of the neutral wire current of the first abnormal single-phase energy meter and the sum of the neutral wire current of the second abnormal single-phase energy meter in the preset time period. According to the theory that the sum of the live wire current of the two abnormal single-phase energy meters is equal to the sum of the neutral wire current when the circuit is mixed, it can be determined that when the absolute value of the first difference is not greater than the first preset threshold, the first abnormal single-phase energy meter and the second abnormal single-phase energy meter corresponding to the first difference are a combination of abnormal single-phase energy meters.
[0035] Step S130: Compare the neutral current value and live current value of the two abnormal single-phase energy meters in the abnormal single-phase energy meter combination at multiple preset times within a preset time period, and determine whether there is a circuit misconnection in the abnormal single-phase energy meter in the abnormal single-phase energy meter combination based on the comparison results.
[0036] In some embodiments, the neutral current value and live current value of two abnormal single-phase energy meters in the abnormal single-phase energy meter combination at each preset time can be compared to determine whether the two abnormal single-phase energy meters are indeed connected in a circuit. If all abnormal single-phase energy meters can meet the requirements in the comparison results, then it can be determined that the abnormal single-phase energy meters are indeed connected in a circuit.
[0037] See Figure 4 The specific implementation of step S130 above includes steps S1301-S1304, the details of which are as follows: Step S1301: At each preset moment within a preset time period, the sum of the neutral current value of the first abnormal single-phase energy meter and the neutral current value of the second abnormal single-phase energy meter in the abnormal single-phase energy meter combination is determined as the second neutral current sum value of the abnormal single-phase energy meter combination at that preset moment.
[0038] In some embodiments, if the abnormal single-phase energy meter combination includes energy meter A and energy meter B, then the sum of the second neutral currents is... , Let i be the neutral current value recorded by electricity meter A at time i. Let be the neutral current value recorded by electricity meter B at time i.
[0039] Step S1302: At each preset moment within a preset time period, the sum of the live wire current value of the first abnormal single-phase energy meter and the live wire current value of the second abnormal single-phase energy meter in the abnormal single-phase energy meter combination is determined as the second live wire current sum value of the abnormal single-phase energy meter combination at that preset moment.
[0040] In some embodiments, if the abnormal single-phase energy meter combination includes energy meter A and energy meter B, then the sum of the second live wire currents is [value missing]. , Let be the live wire current value recorded by electricity meter A at time i. Let be the live wire current value recorded by electricity meter B at time i.
[0041] Step S1303: At each preset moment within a preset time period, calculate the second difference between the sum of the second neutral current and the sum of the second live current at that preset moment, and determine the second difference as the comparison result at that preset moment.
[0042] In some embodiments, the abnormal single-phase energy meter combination includes energy meter A and energy meter B, then the second difference between the sum of the second neutral wire current and the sum of the second live wire current is... That is, the comparison result at the preset time i.
[0043] Step S1304: At each preset moment within a preset time period, based on the comparison results of all preset moments within the preset time period, determine whether there is a circuit misconnection in the abnormal single-phase energy meter combination.
[0044] In some embodiments, during normal electricity use, the live wire current and neutral wire current of a single-phase energy meter are equal at every moment; however, in the event of a circuit misconnection, the live wire and neutral wire currents of the two abnormal single-phase energy meters are not equal, but the sum of their live wire currents is equal to the sum of their neutral wire currents. At each preset moment within a preset time period, a second difference between the sum of the neutral wire current and the sum of the live wire current of the two energy meters in the abnormal combination is calculated, and this second difference is used as a comparison result. If all second differences meet the characteristic that the total current sum is equal during a misconnection, then a circuit misconnection can be determined.
[0045] In one possible implementation, step S1304 is specifically processed as follows: if there is no absolute value of the second difference greater than the second preset threshold in the comparison result, then it is determined that there is a circuit misconnection in the abnormal single-phase energy meter in the abnormal single-phase energy meter combination.
[0046] In some embodiments, the second preset threshold can be set based on the current acquisition accuracy level of the single-phase energy meter in the target area, combined with its current fluctuation range during normal operation. This setting ensures accurate differentiation between normal fluctuations and abnormal connections. For ease of calculation, the second preset threshold can also be set to 0.1A.
[0047] In one possible implementation, when there is a circuit misconnection in each abnormal single-phase energy meter in the abnormal single-phase energy meter group, an on-site circuit misconnection investigation is performed on each abnormal single-phase energy meter in the abnormal single-phase energy meter group.
[0048] It should be noted that on-site circuit cross-connection investigation refers to staff going to the installation location of each abnormal single-phase energy meter in the abnormal single-phase energy meter combination to conduct on-site investigation and determine whether the two abnormal single-phase energy meters have actually been cross-connected.
[0049] The following example illustrates the solution provided in this application. In a certain transformer area, the recorded values of the live wire current and neutral wire current of electricity meter A and electricity meter B at the top of the hour from 0:00 to 23:00 are shown in Table 1: Table 1. Current values for mixed use of electricity meters
[0050] First, the total live wire current and neutral wire current of meter A from 0:00 to 23:00 are 17.071A and 29.834A respectively, which are not equal. The total live wire current and neutral wire current of meter B from 0:00 to 23:00 are 13.452A and 0.846A respectively, which are also not equal.
[0051] Secondly, the sum of the live wire current and the sum of the neutral wire current of the two electricity meters are 30.523A and 30.68A respectively, with a deviation of 0.157A, which is less than 0.5A.
[0052] Finally, the data at each of the 24 points was verified. At each hour, the difference between the sum of the live wire current value and the sum of the neutral wire current value of the two electricity meters was between -0.019A and 0.077A, with the absolute value not exceeding 0.1A.
[0053] On-site inspection and verification revealed that the two households were father and son, and they were evading tiered electricity pricing by having two separate electricity meters share the electricity consumption.
[0054] By analyzing the total neutral and live wire current values of each single-phase energy meter within a preset time period in the target area, multiple abnormal single-phase energy meters are identified. Then, the total neutral and live wire current values of each abnormal single-phase energy meter are cross-compared with the total neutral and live wire current values of the remaining abnormal single-phase energy meters. Based on the cross-comparison results, abnormal single-phase energy meter combinations whose absolute value of the first difference does not exceed a first preset threshold are determined. Through the analysis and calculation of current values, abnormal single-phase energy meter combinations exhibiting circuit misconnection can be quickly identified. This ensures the accuracy of single-phase energy meters. Setting a first preset threshold can improve the accuracy of abnormal single-phase energy meter combinations. By using the total neutral wire current and total live wire current of each single-phase energy meter in the abnormal single-phase energy meter combination within a preset time period, it can further verify whether there is a circuit misconnection in each single-phase energy meter in the abnormal single-phase energy meter combination. This can ensure the accuracy of the investigation results, promptly detect circuit misconnections, and identify the single-phase energy meters with circuit misconnections. By repairing and removing the single-phase energy meters with circuit misconnections, the safety hazards caused by circuit misconnections can be eliminated, and the power supply environment and power consumption order can be effectively regulated.
[0055] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
[0056] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.
[0057] Figure 5 A schematic diagram of the circuit misconnection investigation device based on single-phase energy meter screening provided by an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown, and are described in detail below: like Figure 5 As shown, the circuit misconnection investigation device 5 based on single-phase energy meter screening includes: The filtering module 51 is used to filter out multiple abnormal single-phase energy meters based on the total neutral current and total live current of each single-phase energy meter in the target area within a preset time period. The cross-comparison module 52 is used to cross-compare the total neutral current and total live current of each abnormal single-phase energy meter with the total neutral current and total live current of the other abnormal single-phase energy meters, and determine the abnormal single-phase energy meter combination based on the cross-comparison results; wherein, the abnormal single-phase energy meter combination includes two abnormal single-phase energy meters that may have mixed circuits. The comparison module 53 is used to compare the neutral current value and live current value of two abnormal single-phase energy meters in the abnormal single-phase energy meter combination at multiple preset times within a preset time period, and determine whether there is a circuit misconnection in the abnormal single-phase energy meter in the abnormal single-phase energy meter combination based on the comparison results.
[0058] In one possible implementation, the filtering module 51 is specifically used to: identify single-phase energy meters in the target area whose total neutral current value and total live current value are not equal within a preset time period as abnormal single-phase energy meters.
[0059] In one possible implementation, the cross-comparison module 52 is specifically used to: add the total neutral current of the first abnormal single-phase energy meter and the total neutral current of the second abnormal single-phase energy meter to obtain a first neutral current sum; wherein, the first abnormal single-phase energy meter is any abnormal single-phase energy meter; the second abnormal single-phase energy meter is any abnormal single-phase energy meter other than the first abnormal single-phase energy meter; add the total live current of the first abnormal single-phase energy meter and the total live current of the second abnormal single-phase energy meter to obtain a first live current sum, and calculate a first difference between the first neutral current sum and the first live current sum; determine all the first differences as cross-comparison results, and determine the abnormal single-phase energy meter combination based on the cross-comparison results.
[0060] In one possible implementation, the cross-comparison module 52 is further configured to: for any first difference in the cross-comparison result, if the absolute value of the first difference is not greater than a first preset threshold, determine the first abnormal single-phase energy meter and the second abnormal single-phase energy meter corresponding to the first difference as a combination of abnormal single-phase energy meters.
[0061] In one possible implementation, the comparison module 53 is specifically used to: at each preset moment within a preset time period, perform the following steps: determine the sum of the neutral current value of the first abnormal single-phase energy meter and the neutral current value of the second abnormal single-phase energy meter in the abnormal single-phase energy meter combination as the second neutral current sum value of the abnormal single-phase energy meter combination at that preset moment; determine the sum of the live current value of the first abnormal single-phase energy meter and the live current value of the second abnormal single-phase energy meter in the abnormal single-phase energy meter combination as the second live current sum value of the abnormal single-phase energy meter combination at that preset moment; calculate the second difference between the second neutral current sum value and the second live current sum value at that preset moment, and determine the second difference as the comparison result at that preset moment; based on the comparison results of all preset moments within the preset time period, determine whether there is a circuit misconnection in the abnormal single-phase energy meters in the abnormal single-phase energy meter combination.
[0062] In one possible implementation, the comparison module 53 is further configured to: if there is no absolute value of the second difference greater than the second preset threshold in the comparison result, then determine that there is a circuit misconnection in the abnormal single-phase energy meter in the abnormal single-phase energy meter combination.
[0063] In one possible implementation, the comparison module 53 is further configured to: perform on-site circuit cross-connection investigation on each abnormal single-phase energy meter in the abnormal single-phase energy meter combination when there is circuit cross-connection in each abnormal single-phase energy meter in the abnormal single-phase energy meter combination.
[0064] In one possible implementation, the sum of the neutral current values of each single-phase energy meter at each preset moment within a preset time period is the total neutral current value of the corresponding single-phase energy meter within the preset time period; the sum of the live current values of each single-phase energy meter at each preset moment within a preset time period is the total live current value of the corresponding single-phase energy meter within the preset time period.
[0065] Figure 6 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. For example... Figure 6 As shown, the electronic device 6 of this embodiment includes a processor 60 and a memory 61. The memory 61 stores a computer program 62. When the processor 60 executes the computer program 62, it implements the steps in the various method embodiments described above. Alternatively, when the processor 60 executes the computer program 62, it implements the functions of each module / unit in the various device embodiments described above.
[0066] For example, computer program 62 may be divided into one or more modules / units, which are stored in memory 61 and executed by processor 60 to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of computer program 62 in electronic device 6.
[0067] Electronic device 6 may include, but is not limited to, processor 60 and memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of electronic device 6 and does not constitute a limitation on electronic device 6. It may include more or fewer components than shown, or combine certain components, or different components. For example, electronic device 6 may also include input / output devices, network access devices, buses, etc.
[0068] For the sake of simplicity and clarity, only the above-described functional modules / units are used as examples. In practical applications, the functions described above can be assigned to different functional modules / units as needed. These modules / units can be implemented in hardware, software, or a combination of both.
[0069] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not detailed or described in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Unless otherwise specified or in conflict with logic, the terminology and / or descriptions between different embodiments are consistent and can be referenced interchangeably. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.
[0070] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.
Claims
1. A circuit mixed connection troubleshooting method based on single-phase electric energy meter screening, characterized in that, The method comprises the following steps: Screening a plurality of abnormal single-phase electric energy meters based on the total value of the zero-line current and the total value of the fire-line current of each single-phase electric energy meter in a target transformer area within a preset time period; Cross-comparing the total value of the zero-line current and the total value of the fire-line current of each abnormal single-phase electric energy meter with the total value of the zero-line current and the total value of the fire-line current of the remaining abnormal single-phase electric energy meters, and determining an abnormal single-phase electric energy meter combination according to the cross-comparison result; wherein the abnormal single-phase electric energy meter combination includes two abnormal single-phase electric energy meters that may exist in circuit mixing; Comparing the zero-line current value and the fire-line current value of the two abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination at a plurality of preset time points within the preset time period, and determining whether the abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination exist in circuit mixing according to the comparison result.
2. The method according to claim 1, wherein, Cross-comparing the total value of the zero-line current and the total value of the fire-line current of each abnormal single-phase electric energy meter with the total value of the zero-line current and the total value of the fire-line current of the remaining abnormal single-phase electric energy meters, and determining an abnormal single-phase electric energy meter combination according to the cross-comparison result, comprising: Adding the total value of the zero-line current of a first abnormal single-phase electric energy meter and the total value of the zero-line current of a second abnormal single-phase electric energy meter to obtain a first zero-line current sum value; wherein the first abnormal single-phase electric energy meter is any abnormal single-phase electric energy meter; and the second abnormal single-phase electric energy meter is any abnormal single-phase electric energy meter except the first abnormal single-phase electric energy meter; Adding the total value of the fire-line current of the first abnormal single-phase electric energy meter and the total value of the fire-line current of the second abnormal single-phase electric energy meter to obtain a first fire-line current sum value, and calculating a first difference value of the first zero-line current sum value and the first fire-line current sum value; Determining all the first difference values as the cross-comparison result, and determining an abnormal single-phase electric energy meter combination based on the cross-comparison result.
3. The method according to claim 2, wherein, Determining an abnormal single-phase electric energy meter combination based on the cross-comparison result, comprising: For any first difference value in the cross-comparison result, if the absolute value of the first difference value is not greater than a first preset threshold, determining the first abnormal single-phase electric energy meter and the second abnormal single-phase electric energy meter corresponding to the first difference value as the abnormal single-phase electric energy meter combination.
4. The method according to claim 2, wherein, The comparison of the zero-line current value and the fire-line current value of the two abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination at a plurality of preset time points within the preset time period, and the determination of whether each abnormal single-phase electric energy meter in the abnormal single-phase electric energy meter combination exists in circuit mixing according to the comparison result, comprising: At each preset time point within the preset time period, the following steps are performed: Determining the sum of the zero-line current value of a first abnormal single-phase electric energy meter and the zero-line current value of a second abnormal single-phase electric energy meter in the abnormal single-phase electric energy meter combination as a second zero-line current sum value of the abnormal single-phase electric energy meter combination at the preset time point; Determining the sum of the fire-line current value of the first abnormal single-phase electric energy meter and the fire-line current value of the second abnormal single-phase electric energy meter in the abnormal single-phase electric energy meter combination as a second fire-line current sum value of the abnormal single-phase electric energy meter combination at the preset time point; determine a second difference value between the second zero-line current sum value and the second fire-line current sum value at the preset moment, and determine the second difference value as a comparison result at the preset moment; determine whether the abnormal single-phase electric energy meter combination has circuit misconnection based on the comparison results at all the preset moments within the preset time period.
5. The method according to claim 4, wherein, The determination of whether the single-phase electric energy meter combination in the abnormal single-phase electric energy meter combination has circuit misconnection based on the comparison results at all the preset moments within the preset time period comprises: If there is no second difference value greater than a second preset threshold in the comparison results, it is determined that the abnormal single-phase electric energy meter combination has circuit misconnection.
6. The method according to claim 1, wherein, The method further comprises: determine the single-phase electric energy meter as an abnormal single-phase electric energy meter if the zero-line current sum value and the fire-line current sum value within the preset time period in the target area are not equal.
7. The method according to claim 1, wherein, The sum of the zero-line current values of each single-phase electric energy meter at each preset moment within the preset time period is the zero-line current sum value of the corresponding single-phase electric energy meter within the preset time period, and the sum of the fire-line current values of each single-phase electric energy meter at each preset moment within the preset time period is the fire-line current sum value of the corresponding single-phase electric energy meter within the preset time period.
8. The method according to claim 1, wherein, The method further comprises: when each abnormal single-phase electric energy meter in the abnormal single-phase electric energy meter combination has circuit misconnection, perform on-site circuit misconnection investigation on each abnormal single-phase electric energy meter in the abnormal single-phase electric energy meter combination.
9. A circuit mixed connection screening device based on single-phase electric energy meter screening, characterized in that, The method further comprises: a screening module configured to screen a plurality of abnormal single-phase electric energy meters based on the zero-line current sum value and the fire-line current sum value of each single-phase electric energy meter within a preset time period in a target area; a cross-comparison module configured to cross-compare the zero-line current sum value and the fire-line current sum value of each abnormal single-phase electric energy meter with the zero-line current sum value and the fire-line current sum value of the remaining abnormal single-phase electric energy meters, and determine an abnormal single-phase electric energy meter combination according to the cross-comparison results; wherein the abnormal single-phase electric energy meter combination comprises two abnormal single-phase electric energy meters that may have circuit misconnection; a comparison module configured to compare the zero-line current values and the fire-line current values of two abnormal single-phase electric energy meters in the abnormal single-phase electric energy meter combination at a plurality of preset moments within the preset time period, and determine whether the abnormal single-phase electric energy meter combination has circuit misconnection according to the comparison results.
10. An electronic device, comprising: The device comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to implement the method of any one of claims 1 to 8. The device comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to implement the method of any one of claims 1 to 8.