Detection method and device of electric meter box

Abstract

The embodiment of the invention discloses a detection method and device for an electric meter box, and the method comprises the steps: obtaining a plurality of real-time current value sets at a wire inlet side of the electric meter box, and each real-time current value set comprises a plurality of real-time current values; determining a current value change rate of the real-time current value set according to the real-time current value; and determining the load change condition of the electric meter box according to the current value change rate. By adopting the technical scheme, a reference basis is provided for later load adjustment and access, three-phase imbalance adjustment of the load is facilitated, hidden trouble investigation of a power supply department and investigation pressure of load adjustment are reduced, and power supply reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy data detection, and in particular to a detection method and device for an electric meter box. Background Art

[0002] In order to continuously deepen the modern power supply service system, strengthen the reliability of essential power supply, and better serve the high-quality development of cities, the requirements for power supply reliability are increasing year by year.

[0003] At present, low-voltage distribution networks still have problems such as low power quality in some areas and frequent power outages in the lines. The low voltage in the areas is mainly caused by heavy loads, long lines and poor line contact, which leads to phase loss; frequent power outages in the lines are mainly caused by unbalanced three-phase load distribution and heavy overload in the areas. In order to effectively solve the above problems, on the one hand, it is necessary to adjust the phase and cut over the load, and on the other hand, it is necessary to realize pre-fault control through fault monitoring. However, the existing technology lacks a technical solution that provides a basis for judgment and pre-fault control for phase adjustment and load cut over. Summary of the invention

[0004] The embodiment of the present invention provides a detection method and device for an electric meter box, which provides a basis for identification and planning for phase adjustment and load cutover, reduces the pressure of hidden danger inspection and load adjustment on the power supply department, and improves power supply reliability.

[0005] In a first aspect, an embodiment of the present invention provides a method for detecting an electric meter box, comprising:

[0006] Acquire multiple real-time current value sets at the incoming line side of the meter box, each of the real-time current value sets including multiple real-time current values;

[0007] Determining a current value change rate of the real-time current value set according to the real-time current value;

[0008] The load change of the electric meter box is determined according to the current value change rate.

[0009] Optionally, determining the load change of the electric meter box according to the current value change rate includes:

[0010] Determine a flag code for each of the real-time current value sets according to the current value change rate of each of the real-time current value sets and a comparison relationship between the current value change rate and a change rate threshold;

[0011] Determine the identification code string of the electric meter box according to the identification codes of the plurality of real-time current value sets;

[0012] The load change of the electric meter box is determined according to the flag code string.

[0013] Optionally, determining a flag code of each of the real-time current value sets according to the current value change rate of each of the real-time current value sets and a comparison relationship between the current value change rate and a change rate threshold comprises:

[0014] If the absolute value of the current value change rate is less than the absolute value of the change rate threshold, determining that the identification code of the real-time current value set is the first code;

[0015] If the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is greater than 0, determining that the identification code of the real-time current value set is a second code; the second code is different from the first code;

[0016] If the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is less than 0, determining that the identification code of the real-time current value set is a third code; the third code is different from both the first code and the second code;

[0017] Determining the identification code string of the electric meter box according to the identification codes of the plurality of real-time current value sets comprises:

[0018] According to the collection time sequence of the real-time current values ​​in the plurality of real-time current value sets, the identification codes are combined to form an identification code string of the electric meter box.

[0019] Optionally, determining the current value change rate of the real-time current value set according to the real-time current value includes:

[0020] Determine an average current value of each of the real-time current value sets according to the real-time current value;

[0021] Calculating the current value change rate of the real-time current value set using a first formula according to the average current value;

[0022] Among them, the first calculation formula is:

[0023]

[0024] Among them, α j is the current value change rate of the jth real-time current value set, I avej is the average current value of the jth real-time current value set, I avej+1 is the average current value of the j+1th real-time current value set, p j is the total acquisition time of multiple real-time current values ​​in the jth real-time current value set, p j+1 is the total duration of collecting the multiple real-time current values ​​in the j+1th real-time current value set; j is a positive integer.

[0025] Optionally, determining an average current value of each of the real-time current value sets according to the real-time current value includes:

[0026] According to the real-time current value, using a second formula to respectively calculate the average current value of each real-time current value set;

[0027] Among them, the second calculation formula is:

[0028]

[0029] Among them, I avej is the average current value of the jth real-time current value set, I j，i is the i-th real-time current value of the j-th real-time current value set, where i and j are both positive integers.

[0030] Optionally, the detection method further includes:

[0031] Obtaining the acquisition time of each of the real-time current values;

[0032] Determine a maximum real-time current value and a minimum real-time current value according to the real-time current value;

[0033] Determine a real-time current average value according to the maximum real-time current value and the minimum real-time current value;

[0034] The load condition of the electric meter box is determined according to the real-time current value, the acquisition time and the real-time current average value.

[0035] Optionally, after determining the load change of the electric meter box according to the current value change rate, the method further includes:

[0036] The distribution of the meter box in the distribution network and the distribution of the newly added load are determined according to the load change of the meter box and the load condition of the meter box.

[0037] Optionally, the detection method further includes:

[0038] Obtaining the real-time temperature of the connection point on the incoming line side of the meter box;

[0039] Determining the state of the wire clamp at the docking location according to the real-time temperature; wherein the wire clamp state includes a loose state and a clamped state;

[0040] When the wire clamp is in a loose state, a looseness warning reminder is given.

[0041] Optionally, the detection method further includes:

[0042] Obtaining the real-time voltage on the incoming line side of the meter box;

[0043] Determine the voltage state of the incoming line of the meter box according to the real-time voltage; wherein the voltage state includes a low voltage state, a normal voltage state and an overvoltage state;

[0044] When the voltage state is the low voltage state, a low voltage warning reminder is issued;

[0045] When the voltage state is the overvoltage state, an overvoltage warning reminder is performed.

[0046] In a second aspect, an embodiment of the present invention provides a detection device for an electric meter box, comprising: an acquisition module, a calculation module and a processing module;

[0047] The acquisition module is used to acquire multiple real-time current value sets at the incoming line side of the meter box, each of which includes multiple real-time current values;

[0048] The calculation module is used to determine the current value change rate of the real-time current value set according to the real-time current value;

[0049] The processing module is used to determine the load change of the meter box according to the current value change rate.

[0050] This embodiment obtains multiple real-time current value sets on the incoming line side of the meter box, each real-time current value set includes multiple real-time current values, and determines the current value change rate of the real-time current value set based on the real-time current value, and then determines the load change of the meter box according to the current value change rate, so as to provide a reference basis for subsequent load adjustment and access, which is beneficial to the adjustment of three-phase load imbalance, reduces the pressure of hidden danger investigation and load adjustment on the power supply department, and improves power supply reliability.

[0051] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0053] Figure 1 It is a structural schematic diagram of a detection system for an electric meter box provided by an embodiment of the present invention;

[0054] Figure 2This is a flow chart of a detection method for an electric meter box provided by an embodiment of the present invention;

[0055] Figure 3 It is a structural schematic diagram of another detection system of an electric meter box provided by an embodiment of the present invention;

[0056] Figure 4 It is a flow chart of another detection method of an electric meter box provided by an embodiment of the present invention;

[0057] Figure 5 It is a flow chart of another detection method of an electric meter box provided by an embodiment of the present invention;

[0058] Figure 6 It is a flow chart of another detection method of an electric meter box provided by an embodiment of the present invention;

[0059] Figure 7 It is a flow chart of another detection method of an electric meter box provided by an embodiment of the present invention;

[0060] Figure 8 It is a flow chart of another detection method of an electric meter box provided by an embodiment of the present invention;

[0061] Fig. 9 It is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention;

[0062] Fig.10 It is a structural schematic diagram of a detection device for an electric meter box provided by an embodiment of the present invention;

[0063] Fig.11 It is a structural schematic diagram of a detection device for an electric meter box provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] Figure 1 It is a structural schematic diagram of a detection system for an electric meter box provided by an embodiment of the present invention; Figure 2 This is a flow chart of a detection method for an electric meter box provided by an embodiment of the present invention. This embodiment is applicable to the case where a transformer low-voltage station area performs electric energy detection on a user's electric meter box. The method can be executed by a detection device of the electric meter box, and the detection device can be implemented in the form of hardware and / or software. Figure 1 As shown, the detection system of the electric meter box provided by the embodiment of the present invention includes: a current sensor 1 and a processing unit 2; the processing unit 2 is connected to the current sensor 1, and the connection method can be a controller area network bus (Controller Area Network, CAN), a local interconnect network (Local Interconnect Network, LIN) or Ethernet.

[0067] like Figure 2 As shown, the detection method of the electric meter box based on the above structure includes:

[0068] S110. Acquire multiple real-time current value sets on the incoming line side of the meter box, each real-time current value set including multiple real-time current values.

[0069] Specifically, the processing unit 2 may be a periodic current acquisition control instruction, and send the current acquisition control instruction to the current sensor 1 installed on the incoming line side of the user's meter box. The current sensor 1 may be an electromagnetic current transformer, an electronic current transformer, an optical fiber current sensor, or a TMR (tunnel magnetoresistance) current sensor. The current sensor 1 receives the periodic current acquisition control instruction to obtain multiple real-time current values ​​on the incoming line side of the meter box, and feeds back the multiple real-time current values ​​to the processing unit 2 for storage. The processing unit 2 divides the stored multiple real-time current values ​​into multiple real-time current value sets according to the acquisition order according to the preset rules, wherein the preset rules may be a preset duration or a preset number, and the preset rules for forming each real-time current value set may be the same or different, and the embodiment of the present invention does not specifically limit the preset rules.

[0070] Exemplarily, the preset rule is a preset number, the preset number is a first preset number (7), and the real-time current value set includes a first real-time current value set, a second real-time current value set, and a third real-time current value set. The processing unit 2 can determine the number of real-time current values ​​in the first real-time current value set, the second real-time current value set, and the third real-time current value set according to the same preset rule (the first preset number), that is, the processing unit 2 integrates the 1st to 7th real-time current values ​​collected into the first real-time current value set in the collection order; integrates the 8th to 14th real-time current values ​​collected into the second real-time current value set in the collection order; and integrates the 15th to 21st real-time current values ​​collected into the third real-time current value set in the collection order.

[0071] Alternatively, the preset number includes a first preset number (7), a second preset number (8) and a third preset number (9), and the real-time current value set includes a first real-time current value set, a second real-time current value set and a third real-time current value set. The processing unit 2 can determine the number of real-time current values ​​in the first real-time current value set, the second real-time current value set and the third real-time current value set according to different preset rules, for example, determining the number of real-time current values ​​in the first real-time current value set according to the first preset number, determining the number of real-time current values ​​in the second real-time current value set according to the second preset number, and determining the number of real-time current values ​​in the third real-time current value set according to the third preset number; for another example, determining the number of real-time current values ​​in the first real-time current value set and the second real-time current value set respectively according to the first preset number, and determining the number of real-time current values ​​in the third real-time current value set according to the second preset number; for another example, determining the number of real-time current values ​​in the first real-time current value set and the third real-time current value set respectively according to the first preset number, and determining the second real-time current value set according to the third preset number. It should be noted that the above description is merely an exemplary description of the case where the processing unit 2 determines the number of real-time current values ​​in each real-time current value set according to the same preset rule and / or different preset rules, and is not intended to be a specific limitation on the embodiments of the present invention.

[0072] S120 . Determine a current value change rate of the real-time current value set according to the real-time current value.

[0073] Specifically, after the processing unit 2 obtains multiple real-time current value sets, it calculates the current value change rate between each real-time current value set according to the multiple real-time current values ​​included in each real-time current value set. Exemplarily, when the number of real-time current value sets received by the processing unit 2 is m, the processing unit 2 determines m-1 current value change rates according to the real-time current values ​​included in the m real-time current value sets.

[0074] S130. Determine the load change of the electric meter box according to the current value change rate.

[0075] Specifically, the meter box is generally installed between the low-voltage side of the transformer and the user's load. The outgoing line of the low-voltage side of the transformer draws out the power supply for the meter box through the line connection method, and the outgoing line side of the meter box is connected to the load to realize the power supply of the power grid to the user. Therefore, the real-time current value collected by the current sensor 1 installed on the incoming line side of the user's meter box represents the actual current flowing in the circuit or system after the user's meter box is connected to the user's load at a specific moment, that is, when the transformer supplies the meter box with a constant voltage, the size of the real-time current value reflects the load condition of the meter box. The processing unit 2 can determine the load change of the meter box in a certain period of time by analyzing the current value change rate, and then refer to multiple current value change rates to determine the load change of the meter box over time during the detection time.

[0076] Exemplarily, the real-time current value set acquired by the processing unit 2 includes a first real-time current value set, a second real-time current value set and a third real-time current value set. In terms of acquisition time, the acquisition time of the second real-time current value set is before the acquisition time of the third real-time current value set, and the acquisition time of the first real-time current value set is before the acquisition time of the second real-time current value set. When the current value change rate of the first real-time current value set is less than 0, it is determined that the load increases during the first real-time current value acquisition period; when the current value change rate of the second real-time current value set is greater than 0, it is determined that the load decreases during the second real-time current value acquisition period; when the current value change rate of the third real-time current value set is equal to 0, it is determined that the load remains unchanged during the third real-time current value acquisition period. Furthermore, according to the above three load change conditions, it can be determined that in the acquisition period of the first real-time current value set, the second real-time current value set and the third real-time current value set, the load changes of the meter box over time are increase, decrease and unchanged.

[0077] This embodiment obtains multiple real-time current value sets on the incoming line side of the meter box, each real-time current value set includes multiple real-time current values, and determines the current value change rate of the real-time current value set based on the real-time current value, and then determines the load change of the meter box according to the current value change rate, so as to provide a reference basis for subsequent load adjustment and access, which is beneficial to the adjustment of three-phase load imbalance, reduces the pressure of hidden danger investigation and load adjustment on the power supply department, and improves power supply reliability.

[0078] Based on the above embodiments, Figure 3 is a structural schematic diagram of another electric meter box detection system provided by an embodiment of the present invention, Figure 4 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Figure 4 The detection method shown in the figure explains how to determine the load change. Figure 3 As shown, the detection system of the electric meter box provided by the embodiment of the present invention includes: a current sensor 1, a processing unit 2, and a display unit 3; the processing unit 2 is connected to the current sensor 1 and the display unit 3.

[0079] like Figure 4 As shown, the detection method of the electric meter box includes the following steps:

[0080] S210. Acquire multiple real-time current value sets on the incoming line side of the meter box, each real-time current value set including multiple real-time current values.

[0081] S220 . Determine a current value change rate of the real-time current value set according to the real-time current value.

[0082] S230 , determining a flag code of each real-time current value set according to the current value change rate of each real-time current value set and a comparison relationship between the current value change rate and a change rate threshold.

[0083] The change rate threshold may be a value preset in advance according to specific application scenarios and requirements, and stored in the processing unit 2 .

[0084] Specifically, when the transformer supplies a constant voltage to the meter box, the magnitude of the real-time current value can provide feedback on the load of the meter box, and the current value change rate indicates the load change between two real-time current value sets. The larger the current value change rate, the faster the load of the two adjacent real-time current value sets changes; the smaller the current value change rate, the slower the load of the two adjacent real-time current value sets changes; the current value change rate is greater than zero, indicating that the current of the two adjacent real-time current value sets increases over time, which means that the load connected to the meter box decreases over time; the current value change rate is less than zero, indicating that the current of the two adjacent real-time current value sets decreases over time, which means that the load connected to the meter box increases over time. After the processing unit 2 determines the current value change rate of multiple actual current value sets, a corresponding mark code is assigned to each real-time current value set through the current value change rate and the comparison relationship between the current value change rate and the change rate threshold, and the mark code is used to classify or mark different real-time current value sets.

[0085] Optionally, the identification code of each real-time current value set is determined based on the current value change rate of each real-time current value set and the comparison relationship between the current value change rate and the change rate threshold, including: if the absolute value of the current value change rate is less than the absolute value of the change rate threshold, determining that the identification code of the real-time current value set is the first code; if the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is greater than 0, determining that the identification code of the real-time current value set is the second code; the second code is different from the first code; if the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is less than 0, determining that the identification code of the real-time current value set is the third code.

[0086] The third code is different from both the first code and the second code.

[0087] Specifically, according to the relationship between the current value change rate itself and 0 and the relationship between the absolute value of the current value change rate and the absolute value of the change threshold, the real-time current value set corresponding to the current value change rate is divided into a first category real-time current value set, a second category real-time current value set and a third category real-time current value set. If the processing unit 2 determines that the absolute value of the current value change rate is less than the absolute value of the change rate threshold according to the above comparison rules, the real-time current value set corresponding to the current change rate is determined as a first-category real-time current value set, and the identification code of the first-category real-time current value set is a first code; if the processing unit 2 determines that the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold according to the above comparison rules, and the current value change rate is greater than 0, the real-time current value set corresponding to the current change rate is determined as a second-category real-time current value set, and the identification code of the second-category real-time current value set is a second code; if the processing unit 2 determines that the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold according to the above comparison rules, and the current value change rate is less than 0, the real-time current value set corresponding to the current change rate is determined as a third-category real-time current value set, and the identification code of the third-category real-time current value set is a third code.

[0088] Exemplarily, the first code is 0, the second code is 1, and the third code is -1. Each real-time current value set is marked by 0, 1, and -1, which is not specifically limited in this embodiment.

[0089] S240. Determine a mark code string of the electric meter box according to mark codes of a plurality of real-time current value sets.

[0090] Specifically, after determining the identification code of each real-time current value set, the processing unit 2 combines each identification code according to a certain preset rule to form an overall identification code string, which is used as an identification mark of the operation status of the meter box.

[0091] Furthermore, the processing unit 2 may send the mark code string to the display unit 3 for display, so as to provide a basis for identification and planning for operators who need to perform phase adjustment and load cutover on the electric meter box, thereby improving the work efficiency and accuracy of the operators.

[0092] In an optional embodiment, the identification code string of the meter box is determined based on the identification codes of multiple real-time current value sets, including: combining the identification codes to form the identification code string of the meter box according to the collection time sequence of the real-time current values ​​in the multiple real-time current value sets.

[0093] Specifically, the preset rule for forming the mark code may be to integrate multiple mark codes according to the collection time sequence of the real-time current values ​​in the multiple real-time current value sets. Exemplarily, the processing unit 2 integrates the 1st to 7th real-time current values ​​into the first real-time current value set according to the collection sequence, and integrates the 8th to 15th real-time current values ​​into the second real-time current value set, and determines that the mark code of the first real-time current value set is 0, and the mark code of the second real-time current value set is 1, and then the processing unit 2 combines the mark code 0 of the first real-time current value set and the mark code 1 of the second real-time current value set into a mark code string of 01 according to the collection time of the real-time current values ​​in the first real-time current value set before the collection time of the second real-time current value set.

[0094] S250. Determine the load change of the electric meter box according to the mark code string.

[0095] Specifically, each flag code in the flag code string represents a load change of a real-time current value set, and multiple flag codes are combined into a flag code string in the order of collection time to represent the load change of the meter box over time.

[0096] Exemplarily, the processing unit 2 determines that the first flag code of the first real-time current value set is 0, the second flag code of the second real-time current value set is 1, and the third flag code of the third real-time current value set is -1; wherein 0 indicates that the load change of the first real-time current value set is unchanged, 1 indicates that the load change of the first real-time current value set is decreasing, and -1 indicates that the load change of the third real-time current value set is increasing. Furthermore, the processing unit 2 combines the first flag code, the second flag code, and the third flag code into a flag code string of 01-1 according to the acquisition time sequence, and based on the flag code string, it can be determined that the load change of the meter box over time is unchanged, decreasing, and increasing.

[0097] This embodiment determines the flag code of each real-time current value set through the current value change rate and the comparison relationship between the current value change rate and the change threshold, and determines the load change of the meter box based on the flag code string composed of the flag codes of each real-time current value set, thereby improving the detection efficiency of the load change, facilitating timely discovery of abnormal conditions of the meter box, and providing a reference basis for allocating power resources and optimizing grid operation.

[0098] Based on the above embodiments, Figure 5 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Figure 5 The detection method shown in FIG. 1 illustrates how to determine the rate of change of the current value. Figure 5 As shown, the detection method of the electric meter box includes the following steps:

[0099] S310. Acquire multiple real-time current value sets on the incoming line side of the meter box, each real-time current value set including multiple real-time current values.

[0100] S320 , determining an average current value of each real-time current value set according to the real-time current value.

[0101] Specifically, after the processing unit 2 obtains multiple real-time current value sets, it calculates the average current value of the real-time current value set according to the multiple real-time current values ​​contained in each real-time current value set. The average current value can reflect the overall level of the current in the time period of the real-time current value set, which is helpful for evaluating the working state, load condition and possible problems of the circuit. For example, by monitoring the real-time current value over a period of time and calculating its average value, it can be determined whether the equipment is within the normal operating range, whether there is an overload or abnormal condition.

[0102] Optionally, according to the real-time current value, a second formula is used to calculate the average current value of each real-time current set; wherein the second calculation formula is:

[0103]

[0104] Among them, I avej is the average current value of the jth real-time current set, I j，i is the i-th real-time current value of the j-th real-time current value set, where i and j are both positive integers.

[0105] Specifically, after the processing unit 2 obtains the jth real-time current value set, the real-time current value set includes k real-time current values, and substitutes the k real-time current values ​​and the value of k into the second calculation formula, thereby calculating the average current value of the jth real-time current value set. Exemplarily, the second real-time current value set obtained by the processing unit 2 includes 4 real-time current values, namely I 2，1 =4A, I 2，2 =8A,I 2，3 =12A, I 2，4 =16A, then the average current value I of the second real-time current value set is calculated by the second calculation formula ave2 =(4+8+12+16)÷4=10A.

[0106] S330, according to the average current value, using a first formula to calculate the current value change rate of the real-time current set; wherein the first calculation formula is:

[0107]

[0108] Among them, α j is the current value change rate of the jth real-time current set, I avejis the average current value of the jth real-time current set, I avej+1 is the average current value of the j+1th real-time current set, p j is the total acquisition time of multiple real-time current values ​​in the jth real-time current set, p j+1 is the total acquisition time of multiple real-time current values ​​in the j+1th real-time current set; j is a positive integer.

[0109] Specifically, the processing unit 2 can substitute the average current value of two adjacent real-time current value sets and the total collection time of the two real-time current value sets into the first calculation formula in the order of collection time, and calculate the current value change rate between the j-th real-time current value set and the j+1-th real-time current value set, so as to help understand the load dynamic characteristics of the power system where the meter box is located. Exemplarily, the average current value of the first real-time current set is 5A, the total collection time of multiple real-time current values ​​in the first real-time current value set is 5h, the average current value of the second real-time current set is 10A, and the total collection time of multiple real-time current values ​​in the second real-time current value set is 10h, then the current value change rate of the first real-time current value set is calculated by the first calculation formula.

[0110] S340. Determine the load change of the electric meter box according to the current value change rate.

[0111] This embodiment calculates the current value change rate of the real-time current value set through the first formula and the second formula, thereby improving the calculation accuracy of the current value change rate, providing accurate data support for determining load changes, and facilitating the rational allocation of power resources.

[0112] Based on the above embodiments, Figure 6 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Figure 6 The detection method shown in the figure explains how to determine the load condition of the meter box. Figure 6 As shown, the detection method of the electric meter box also includes the following steps:

[0113] S410, obtaining the collection time of each real-time current value.

[0114] Specifically, the processing unit 2 periodically generates a current collection control instruction so that the current sensor 1 obtains the real-time current value on the incoming line side of the meter box. The real-time current value is collected by the current sensor 1 and sent to the processing unit 2. The processing unit 2 stores the real-time current value and its corresponding collection time.

[0115] S420, determining a maximum real-time current value and a minimum real-time current value according to the real-time current value.

[0116] Specifically, the processing unit 2 can compare all the real-time current values ​​included in the multiple real-time current value sets to determine the maximum real-time current value and the minimum real-time current value, and can display the maximum real-time current value and the minimum real-time current value through the display unit 3, so as to provide a basis for judgment and planning for operators who need to adjust the phase of the meter box and cut over the load. Exemplarily, the processing unit 2 can draw a line graph of the real-time current value changing with time based on the real-time current value and its corresponding collection time, and determine the maximum real-time current value and the minimum real-time current value through the highest point and the lowest point of the line graph.

[0117] S430, determining a real-time current average value according to the maximum real-time current value and the minimum real-time current value.

[0118] Specifically, the processing unit 2 can add the maximum real-time current value and the minimum real-time current value and divide the sum by 2 to determine the real-time current average value, which can be displayed by the display unit 3. The maximum real-time current value and the minimum real-time current value are two extreme points of current fluctuation. The real-time current average value can reflect the fluctuation of the current in the total detection time period to a certain extent, and an approximate average value can be quickly obtained, which simplifies the calculation steps and helps to improve the efficiency of monitoring the operating status of the power system.

[0119] S440. Determine the load condition of the electric meter box according to the real-time current value, the collection time corresponding to each real-time current value, and the real-time current average value.

[0120] Specifically, the processing unit 2 can generate a current data report based on the real-time current value, the collection time corresponding to each real-time current value and the real-time current average value. When the power supply voltage on the incoming line side of the meter box remains unchanged, the current data report feedbacks the load condition of the meter box and can be displayed through the display unit 3, which helps the dispatching department to understand the load condition of the power system more accurately, thereby providing an important basis for fault diagnosis and power dispatching.

[0121] This embodiment determines the load condition of the meter box by obtaining multiple real-time current values, the collection time corresponding to each real-time current value, and the real-time current average value, thereby avoiding the error caused by a single data point in judging the load condition of the meter box, improving the detection accuracy of the load condition, and helping to provide a reliable reference basis for power distribution.

[0122] Based on the above embodiments, Figure 7 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Figure 7 The detection method shown in the figure explains how to determine the allocation of the meter box. Figure 7 As shown, the detection method of the electric meter box includes the following steps:

[0123] S510: Obtain the acquisition time of each real-time current value.

[0124] S520: Determine a maximum real-time current value and a minimum real-time current value according to the real-time current value.

[0125] S530: Determine a real-time current average value according to the maximum real-time current value and the minimum real-time current value.

[0126] S540: Determine the load condition of the electric meter box according to the real-time current value, the collection time corresponding to each real-time current value, and the real-time current average value.

[0127] S550. Determine the distribution of the electric meter box in the distribution network and the distribution of the newly added load according to the load change of the electric meter box and the load condition of the electric meter box.

[0128] Specifically, the load condition of the meter box includes multiple real-time current values ​​of the meter box, the collection time corresponding to each real-time current value, and the real-time current average value, which can characterize the static characteristics of the meter box load at a certain moment; and the load change condition of the meter box includes the current value change rate, which can characterize the dynamic characteristics of the load. According to the mark code strings output by different meter boxes, it can be understood whether the load increase and decrease changes of different meter boxes are the same, that is, within the same detection time, the load changes between different meter boxes with the same mark code string are the same. According to the load change condition and load condition of the meter box, the dynamic and static characteristics of the load during the use of the meter box can be understood, thereby providing a reference for the distribution of the meter box in the distribution network and the distribution of the newly added load.

[0129] Exemplarily, meter boxes with the same or similar identification code strings are classified as meter boxes with the same load change situation. The meter boxes with the same load change situation include the first meter box, the second meter box, the third meter box and the fourth meter box. The real-time current average value of the first meter box is 9A, and the real-time current average values ​​of the second meter box, the third meter box and the fourth meter box are all 3A. Since the load changes of the four meter boxes are the same, the sum of the real-time current average values ​​of the second meter box, the third meter box and the fourth meter box is equal to the real-time current average value of the first meter box. Then, the power supply plan of the first meter box can be divided into three parts to form the power distribution plan of the second meter box, the third meter box and the fourth meter box.

[0130] This embodiment is based on the load change and load conditions of the meter boxes. The meter boxes of the same load change type are combined with their respective real-time current average values ​​within the detection time. This can improve the distribution efficiency of the low-voltage distribution network and effectively solve the three-phase imbalance. At the same time, it can provide a reference for newly connected loads to ensure that the connection of new loads will not cause large fluctuations in the three-phase imbalance rate, thereby improving power supply reliability.

[0131] Based on the above embodiments, Figure 8 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Figure 8 The detection method shown in the figure explains how to detect the fault condition of the electric meter box. Figure 8 As shown, the detection method of the electric meter box also includes the following steps:

[0132] S610, obtaining a plurality of real-time current value sets on the incoming line side of the meter box, and obtaining the real-time temperature at the connection point on the incoming line side of the meter box.

[0133] Specifically, Figure 3 As shown, the processing unit 2 periodically generates a temperature acquisition control instruction, and sends the temperature acquisition control instruction to the temperature sensor 4 installed at the incoming connection of the user's meter box. The temperature sensor 4 receives the periodic temperature acquisition control instruction, thereby performing periodic real-time temperature acquisition at the incoming connection of the meter box. The temperature sensor 4 can be a thermal resistance temperature sensor, a thermocouple temperature sensor, a semiconductor temperature sensor, or an infrared temperature sensor. The embodiment of the present invention does not specifically limit the type of the temperature sensor 4.

[0134] It should be noted that obtaining multiple real-time current value sets on the incoming line side of the meter box and obtaining the real-time temperature of the connection point on the incoming line side of the meter box can be carried out simultaneously, or the real-time temperature of the connection point on the incoming line side of the meter box can be obtained after obtaining multiple real-time current value sets on the incoming line side of the meter box, or the real-time temperature of the connection point on the incoming line side of the meter box can be obtained before obtaining multiple real-time current value sets on the incoming line side of the meter box. This embodiment does not specifically limit the order of obtaining the real-time current value sets and the real-time temperature.

[0135] S620, determining the current value change rate of the real-time current set according to the real-time current value, and determining the state of the wire clamp at the connection point according to the real-time temperature.

[0136] The wire clamp state includes a loose state and a clamped state.

[0137] Specifically, the temperature threshold is preset in advance according to the actual application scenario and requirements, and the temperature threshold is stored in the processing unit 2. When the temperature sensor 4 collects the real-time temperature at the connection point on the incoming line side of the meter box and sends it to the processing unit 2, the processing unit 2 determines the state of the wire clamp at the connection point based on the comparison result between the real-time temperature and the temperature threshold, and synchronously sends the wire clamp state and the corresponding meter box information to the power supply department in the jurisdiction, so as to realize the monitoring of the wire clamp state at the connection point.

[0138] Exemplarily, the preset temperature threshold is 60°C. When the detected real-time temperature is greater than 60°C, the comparison result is that the connection is hot, and the wire clamp state at the connection is determined to be loose; when the detected real-time temperature is less than 60°C, the comparison result is that there is no heat at the connection, and the wire clamp state at the connection is determined to be clamped.

[0139] S630. Determine the load change of the meter box according to the current value change rate; and issue a looseness warning reminder when the wire clamp is in a loose state.

[0140] Specifically, when the wire clamp is in a loose state, a warning reminder can be given, which may include but is not limited to at least one of a voice reminder, a buzzer reminder, a luminous reminder, etc., so that the user or staff can promptly know the status of the wire clamp at the incoming side of the meter box, and take corresponding countermeasures to improve the safety of the user's meter box.

[0141] This embodiment uses a temperature sensor to periodically detect the temperature at the connection point on the incoming line side of the meter box, which ensures real-time fault detection. It is easy to install and does not require major changes to the existing power detection system. It reduces the pressure on the power supply department to patrol and investigate electrical hazards in low-voltage areas, effectively solves power outages caused by loose wire clamps and broken wires at the meter box leads, reduces the failure rate, and realizes pre-fault control.

[0142] Based on the above embodiments, Fig. 9 is a flow chart of another method for detecting an electric meter box provided by an embodiment of the present invention. Fig. 9 The detection method shown further explains how to detect the fault condition of the meter box. Fig. 9 As shown, the detection method of the electric meter box also includes the following steps:

[0143] S710. Acquire multiple real-time current value sets on the incoming line side of the meter box, and acquire the real-time voltage on the incoming line side of the meter box.

[0144] Specifically, Figure 3 As shown, the processing unit 2 periodically generates a voltage acquisition control instruction, and sends the voltage acquisition control instruction to the voltage sensor 5 installed on the incoming line side of the user's meter box. The voltage sensor 5 receives the periodic voltage acquisition control instruction and thus performs periodic real-time voltage acquisition at the incoming line connection of the meter box. The voltage sensor 5 can be a resistor voltage divider type voltage sensor, a capacitor voltage divider type voltage sensor, a Hall voltage sensor, or an electronic voltage sensor. The embodiment of the present invention does not specifically limit the type of the voltage sensor 5.

[0145] It should be noted that obtaining multiple real-time current value sets on the incoming line side of the meter box and obtaining the real-time voltage at the connection point on the incoming line side of the meter box can be carried out simultaneously, or the real-time voltage on the incoming line side of the meter box can be obtained after obtaining multiple real-time current value sets on the incoming line side of the meter box, or the real-time voltage on the incoming line side of the meter box can be obtained before obtaining multiple real-time current value sets on the incoming line side of the meter box. This embodiment does not specifically limit the order of obtaining the real-time current value sets and the real-time voltage.

[0146] S720: Determine the current value change rate of the real-time current set according to the real-time current value, and determine the voltage state of the meter box incoming line according to the real-time voltage.

[0147] The voltage state includes a low voltage state, a normal voltage state and an over voltage state.

[0148] Specifically, the voltage threshold range is preset in advance according to the actual application scenario and requirements, and the voltage threshold range is stored in the processing unit 2. When the voltage sensor 5 collects the real-time voltage on the incoming line side of the meter box and sends it to the processing unit 2, the processing unit 2 determines the voltage state of the meter box based on the comparison result between the real-time voltage and the voltage threshold range. If the real-time voltage is less than the minimum value of the voltage threshold range, the voltage state is determined to be a low voltage state; if the real-time voltage is greater than the maximum value of the voltage threshold range, the voltage state is determined to be an overvoltage state, and the voltage state and the corresponding meter box information are synchronously sent to the power supply department in the jurisdiction to monitor the voltage state on the incoming line side of the meter box.

[0149] S730: Determine the load change of the meter box according to the current value change rate, and issue a low voltage warning or an over voltage warning.

[0150] Specifically, when the voltage state is low voltage, a low voltage warning reminder is given; when the voltage state is over voltage, an over voltage warning reminder is given. The low voltage warning reminder and over voltage warning reminder may include but are not limited to at least one of voice reminder, buzzer reminder, light reminder, etc., so that the user or staff can know the voltage state of the incoming line side of the meter box in time, and take corresponding countermeasures to improve the safety of the user's meter box.

[0151] This embodiment uses a temperature sensor to periodically detect the voltage on the incoming side of the meter box, ensuring real-time fault detection while being easy to install. No major changes are required to the existing power detection system, which reduces the pressure on the power supply department to patrol and investigate electrical hazards in low-voltage areas, achieves pre-fault control, and improves the stability of power supply to the power grid.

[0152] Based on the same inventive concept, Fig.10 is a schematic diagram of the structure of a detection device for an electric meter box provided by an embodiment of the present invention, such as Fig.10As shown, the detection device of the electric meter box includes an acquisition module 810 , a calculation module 820 and a processing module 830 .

[0153] An acquisition module 810 is used to acquire multiple real-time current value sets at the incoming line side of the meter box, each real-time current value set including multiple real-time current values;

[0154] A calculation module 820, configured to determine a current value change rate of a real-time current set according to the real-time current value;

[0155] The processing module 830 is used to determine the load change of the meter box according to the current value change rate.

[0156] The detection device for an electric meter box provided in the embodiment of the present invention can execute the detection method for an electric meter box provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0157] Fig.11 A schematic diagram of a detection device 80 for an electric meter box that can be used to implement an embodiment of the present invention is shown. The detection device for the electric meter box is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The detection device for the electric meter box can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0158] like Fig.11 As shown, the detection device 80 of the electric meter box includes at least one processor 81, and a memory connected to the at least one processor 81, such as a read-only memory (ROM) 82, a random access memory (RAM) 83, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 81 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 82 or the computer program loaded from the storage unit 88 to the random access memory (RAM) 83. In the RAM 83, various programs and data required for the operation of the sewage discharge device 80 can also be stored. The processor 81, the ROM 82 and the RAM 83 are connected to each other through a bus 84. The input / output (I / O) interface 85 is also connected to the bus 84.

[0159] A number of components in the detection device 80 of the electric meter box are connected to the I / O interface 85, including: an input unit 86, such as a keyboard, a mouse, etc.; an output unit 87, such as various types of displays, speakers, etc.; a storage unit 88, such as a disk, an optical disk, etc.; and a communication unit 89, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 89 allows the sewage discharge device 80 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0160] The processor 81 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 81 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 81 executes the various methods and processes described above, such as the detection method of the electric meter box.

[0161] In some embodiments, the detection method of the electric meter box can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 88. In some embodiments, part or all of the computer program can be loaded and / or installed on the sewage discharge device 80 via the ROM 82 and / or the communication unit 89. When the computer program is loaded into the RAM 83 and executed by the processor 81, one or more steps of the detection method of the electric meter box described above can be performed. Alternatively, in other embodiments, the processor 81 can be configured to perform the detection method of the electric meter box in any other appropriate manner (for example, by means of firmware).

[0162] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0163] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0164] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0165] In order to provide interaction with the user, the system and technology described herein can be implemented on the detection device of the meter box, which has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball), through which the user can provide input to the detection device of the meter box. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and the input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0166] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0167] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0168] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0169] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting an electric meter box, characterized in that: include: Acquire multiple real-time current value sets at the incoming line side of the meter box, each of the real-time current value sets including multiple real-time current values; Determining a current value change rate of the real-time current value set according to the real-time current value; The load change of the electric meter box is determined according to the current value change rate.

2. The detection method according to claim 1, characterized in that: Determining the load change of the electric meter box according to the current value change rate includes: Determine a flag code for each of the real-time current value sets according to the current value change rate of each of the real-time current value sets and a comparison relationship between the current value change rate and a change rate threshold; Determine the identification code string of the electric meter box according to the identification codes of the plurality of real-time current value sets; The load change of the electric meter box is determined according to the flag code string.

3. The detection method according to claim 2, characterized in that: Determining a flag code of each of the real-time current value sets according to the current value change rate of each of the real-time current value sets and a comparison relationship between the current value change rate and a change rate threshold value includes: If the absolute value of the current value change rate is less than the absolute value of the change rate threshold, determining that the identification code of the real-time current value set is the first code; If the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is greater than 0, determining that the identification code of the real-time current value set is a second code; the second code is different from the first code; If the absolute value of the current value change rate is greater than or equal to the absolute value of the change rate threshold, and the current value change rate is less than 0, determining that the identification code of the real-time current value set is a third code; the third code is different from both the first code and the second code; Determining the identification code string of the electric meter box according to the identification codes of the plurality of real-time current value sets comprises: According to the collection time sequence of the real-time current values ​​in the plurality of real-time current value sets, the identification codes are combined to form an identification code string of the electric meter box.

4. The detection method according to claim 1, characterized in that: Determining the current value change rate of the real-time current value set according to the real-time current value includes: Determine an average current value of each of the real-time current value sets according to the real-time current value; Calculating the current value change rate of the real-time current value set using a first formula according to the average current value; Among them, the first calculation formula is: Among them, α j is the current value change rate of the jth real-time current value set, I avej is the average current value of the jth real-time current value set, I avej+1 is the average current value of the j+1th real-time current value set, p j is the total acquisition time of multiple real-time current values ​​in the jth real-time current value set, p j+1 is the total duration of collecting the multiple real-time current values ​​in the j+1th real-time current value set; j is a positive integer.

5. The detection method according to claim 4, characterized in that: Determining an average current value of each of the real-time current value sets according to the real-time current value includes: According to the real-time current value, using a second formula to respectively calculate the average current value of each real-time current value set; Among them, the second calculation formula is: Among them, I avej is the average current value of the jth real-time current value set, I j，i is the i-th real-time current value of the j-th real-time current value set, where i and j are both positive integers.

6. The detection method according to claim 1, characterized in that: The detection method further comprises: Obtaining the acquisition time of each of the real-time current values; Determine a maximum real-time current value and a minimum real-time current value according to the real-time current value; Determine a real-time current average value according to the maximum real-time current value and the minimum real-time current value; The load condition of the electric meter box is determined according to the real-time current value, the acquisition time and the real-time current average value.

7. The detection method according to claim 6, characterized in that: After determining the load change of the electric meter box according to the current value change rate, the method further includes: The distribution of the meter box in the distribution network and the distribution of the newly added load are determined according to the load change of the meter box and the load condition of the meter box.

8. The detection method according to claim 1, characterized in that: The detection method further comprises: Obtaining the real-time temperature of the connection point on the incoming line side of the meter box; Determining the state of the wire clamp at the docking location according to the real-time temperature; wherein the wire clamp state includes a loose state and a clamped state; When the wire clamp is in a loose state, a looseness warning reminder is given.

9. The detection method according to claim 1, characterized in that: The detection method further comprises: Obtaining the real-time voltage on the incoming line side of the meter box; Determine the voltage state of the incoming line of the meter box according to the real-time voltage; wherein the voltage state includes a low voltage state, a normal voltage state and an overvoltage state; When the voltage state is the low voltage state, a low voltage warning reminder is issued; When the voltage state is the overvoltage state, an overvoltage warning reminder is performed.

10. A detection device for an electric meter box, characterized in that: include: Acquisition module, calculation module and processing module; The acquisition module is used to acquire multiple real-time current value sets at the incoming line side of the meter box, each of which includes multiple real-time current values; The calculation module is used to determine the current value change rate of the real-time current value set according to the real-time current value; The processing module is used to determine the load change of the meter box according to the current value change rate.

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