A method and device for detecting an electric meter box

Abstract

The embodiment of the application discloses a kind of detection method and device of electric meter box, and the detection method of electric meter box includes: obtaining the multiple real-time current value set of electric meter box incoming line side, each real-time current value set includes multiple real-time current values;Determine the current value variation rate of real-time current value set according to real-time current value;Determine the load change condition of electric meter box according to current value variation rate.The technical scheme is used to provide reference basis for the adjustment and access of later load, which is beneficial to load three-phase unbalance adjustment, reduces the investigation pressure of power supply department hidden danger investigation and load adjustment, and improves power supply reliability.

Description

TECHNICAL FIELD

[0001] The present application 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

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

[0003] At present, there are still some problems in the low-voltage distribution network, such as low power quality in some areas, frequent line power outages, and so on. The main reason for the low voltage in the area is the heavy load, long line and poor line contact causing the lack of phase. The main reason for frequent line power outages is the unbalanced three-phase distribution of the load and the overload of the area. In order to effectively solve the above problems, on the one hand, it is necessary to adjust the phase and the load switching, and on the other hand, it is necessary to realize the pre-fault control through fault monitoring. However, there is a lack of technical solutions for providing discrimination basis for phase adjustment and load switching and pre-fault control in the prior art. SUMMARY

[0004] The embodiments of the present application provide a detection method and device for an electric meter box, which provides discrimination and planning basis for phase adjustment and load switching, reduces the investigation pressure of the power supply department in hidden danger investigation and load adjustment, and improves the power supply reliability.

[0005] In a first aspect, the embodiments of the present application provide a detection method for an electric meter box, comprising:

[0006] obtaining a plurality of real-time current value sets of the electric meter box incoming line side, each of the real-time current value sets comprising a plurality of 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] determining the load change condition of the electric meter box according to the current value change rate.

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

[0010] 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;

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

[0012] determining the load change condition of the electric meter box according to the flag code string.

[0013] Optionally, the flag code of each of the real-time current value sets is determined 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, and the determining comprises:

[0014] If the absolute value of the current value change rate is less than the absolute value of the change rate threshold, the flag code of the real-time current value set is determined as a 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, the flag code of the real-time current value set is determined as 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, the flag code of the real-time current value set is determined as a third code; the third code is different from the first code and the second code;

[0017] The flag code string of the electric meter box is determined according to the flag codes of the plurality of real-time current value sets, and the determining comprises:

[0018] The flag code string of the electric meter box is formed by combining the flag codes in the order of the collection time of the real-time current values in the plurality of real-time current value sets.

[0019] Optionally, the current value change rate of each of the real-time current value sets is determined according to the real-time current value, and the determining comprises:

[0020] The average current value of each of the real-time current value sets is determined according to the real-time current value;

[0021] The current value change rate of each of the real-time current value sets is calculated by using a first formula according to the average current value;

[0022] The first calculation formula is as follows:

[0023]

[0024] Wherein, 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+1)th real-time current value set, p j is the total collection time length of the real-time current values in the jth real-time current value set, p j+1 is the total collection time length of the real-time current values in the (j+1)th real-time current value set; j is a positive integer.

[0025] Optionally, the average current value of each of the real-time current value sets is determined according to the real-time current value, comprising:

[0026] The average current value of each of the real-time current value sets is calculated according to the real-time current value by using a second formula respectively;

[0027] The second calculation formula is:

[0028]

[0029] The second calculation formula is: avej The average current value of the jth real-time current value set is I j，i The ith real-time current value of the jth real-time current value set is I

[0030] Optionally, the detection method further comprises:

[0031] The acquisition time of each real-time current value is obtained;

[0032] The maximum real-time current value and the minimum real-time current value are determined according to the real-time current value;

[0033] The real-time current average value is determined 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 the load change condition of the electric meter box is determined according to the current value change rate, the method further comprises:

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

[0037] Optionally, the detection method further comprises:

[0038] The real-time temperature of the electric meter box at the connection place of the incoming line side is obtained;

[0039] The clamp state of the connection place is determined according to the real-time temperature; wherein, the clamp state comprises a loose state and a clamped state;

[0040] When the clamp state is the loose state, a loose warning is given.

[0041] Optionally, the detection method further comprises:

[0042] The real-time voltage of the electric meter box at the incoming line side is obtained;

[0043] determine a voltage state of the meter box incoming line according to the real-time voltage; wherein the voltage state comprises 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 is given;

[0045] when the voltage state is the overvoltage state, an overvoltage warning is given.

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

[0047] The acquisition module is configured to acquire a plurality of real-time current value sets of the meter box incoming line side, each of the real-time current value sets comprising a plurality of real-time current values.

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

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

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

[0051] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

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

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

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

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

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

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

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

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

[0061] Figure 9 is a detection method flow chart of an electric meter box provided by an embodiment of the present application;

[0062] Figure 10 is a structural schematic diagram of a detection device of an electric meter box provided by an embodiment of the present application;

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

[0064] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the present application.

[0065] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and above-described accompanying 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 under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] Figure 1 is a structural schematic diagram of an electric meter box detection system provided by an embodiment of the present application; Figure 2 is a flowchart of an electric meter box detection method provided by an embodiment of the present application. The embodiment can be applicable to the case of electric energy detection of user electric meter boxes in a transformer low-voltage area. The method can be executed by a detection device of the electric meter box, which can be realized in the form of hardware and / or software. As shown in Figure 1 the electric meter box detection system provided by the embodiment of the present application includes a current sensor 1 and a processing unit 2. The processing unit 2 is connected with the current sensor 1, and the connection mode can be a controller area network (CAN), a local interconnect network (LIN) or an Ethernet.

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

[0068] S110, a plurality of real-time current value sets at the incoming line side of the electric meter box are acquired, and each real-time current value set includes a plurality of real-time current values.

[0069] Specifically, the processing unit 2 can periodically generate current collection control instructions and send the current collection control instructions to the current sensor 1 installed at the incoming line side of the user's meter box. The current sensor 1 can be an electromagnetic current transformer, an electronic current transformer, an optical fiber current sensor, or a TMR (tunneling magnetoresistance) current sensor. The current sensor 1 receives the periodic current collection control instructions to obtain real-time current values of multiple incoming line sides 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 a preset rule in the collection order, where the preset rule can be a preset time length or a preset number. The preset rule for forming each real-time current value set can be the same or different, and the present application does not make a specific limitation on the preset rule.

[0070] For example, 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), i.e., the processing unit 2 integrates the first 7 real-time current values collected in the collection order into the first real-time current value set; integrates the 8th-14th real-time current values collected in the collection order into the second real-time current value set; and integrates the 15th-21st real-time current values collected in the collection order into the third real-time current value set.

[0071] Alternatively, the preset quantity includes a first preset quantity (7), a second preset quantity (8) and a third preset quantity (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, the number of real-time current values in the first real-time current value set is determined according to the first preset quantity, the number of real-time current values in the second real-time current value set is determined according to the second preset quantity, and the number of real-time current values in the third real-time current value set is determined according to the third preset quantity; for another example, the number of real-time current values in the first real-time current value set and the second real-time current value set is determined according to the first preset quantity respectively, and the number of real-time current values in the third real-time current value set is determined according to the third preset quantity; for another example, the number of real-time current values in the first real-time current value set and the third real-time current value set is determined according to the first preset quantity respectively, and the number of real-time current values in the second real-time current value set is determined according to the third preset quantity. It should be noted that the above only exemplarily describes the case that 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, which is not as a specific limitation on the embodiments of the present application.

[0072] S120, determining the 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 a plurality of real-time current value sets, the current value change rate between each real-time current value set is calculated according to the plurality of real-time current values included in each real-time current value set. For example, 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, determining the load change condition of the 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 load, the low-voltage side of the transformer is connected to the meter box through the line connection mode to supply power to the meter box, and the outgoing line side of the meter box is connected to the load to realize power supply from 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 meter box represents the actual current flowing in the circuit or system at a certain time after the user meter box is connected to the user load, i.e. under the condition that the supply voltage of the transformer to the meter box is constant, 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 condition of the meter box in a certain period of time by analyzing the current value change rate, and further determine the load change condition of the meter box over time within the detection time by referring to a plurality of current value change rates.

[0076] For example, the set of real-time current values obtained by the processing unit 2 includes a first set of real-time current values, a second set of real-time current values, and a third set of real-time current values. In terms of collection time, the collection time of the second set of real-time current values is before the collection time of the third set of real-time current values, and the collection time of the first set of real-time current values is before the collection time of the second set of real-time current values. When the rate of change of the current values of the first set of real-time current values is less than 0, it is determined that the load increases in the first real-time current value collection period; when the rate of change of the current values of the second set of real-time current values is greater than 0, it is determined that the load decreases in the second real-time current value collection period; and when the rate of change of the current values of the third set of real-time current values is equal to 0, it is determined that the load is unchanged in the third real-time current value collection period. Then, according to the above three load change conditions, it can be determined that the load change of the meter box over time in the collection period of the first set of real-time current values, the second set of real-time current values, and the third set of real-time current values is increasing, decreasing, and unchanged.

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

[0078] On the basis of the above embodiment, Figure 3 is a structural schematic diagram of another detection system of a meter box provided by the embodiment of the present application, Figure 4 is a flow chart of another detection method of a meter box provided by the embodiment of the present application, Figure 4 The detection method shown illustrates how to determine the load change condition. As shown in Figure 3 The detection system of the meter box provided by the embodiment of the present application includes a current sensor 1, a processing unit 2, and a display unit 3; the processing unit 2 is connected with the current sensor 1 and the display unit 3.

[0079] As shown in Figure 4 The detection method of the meter box includes the following steps:

[0080] S210, obtaining a plurality of sets of real-time current values at the incoming line side of the meter box, each set of real-time current values including a plurality of real-time current values.

[0081] S220, determining the rate of change of the current values of the set of real-time current values according to the real-time current values.

[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 can be a value preset in advance according to a specific application scenario and requirement, and stored in the processing unit 2.

[0084] Specifically, in the case that the voltage supplied by the transformer to the meter box is constant, the size of the real-time current value can reflect the load condition of the meter box, the current value change rate represents the change of the load between two real-time current value sets, the greater the current value change rate, the faster the change of the load between the adjacent two real-time current value sets; the smaller the current value change rate, the slower the change of the load between the adjacent two real-time current value sets; the current value change rate greater than zero indicates that the current between the adjacent two real-time current value sets increases with time, which represents that the load connected to the meter box decreases with time; the current value change rate less than zero indicates that the current between the adjacent two real-time current value sets decreases with time, which represents that the load connected to the meter box increases with time. After the processing unit 2 determines the current value change rate of the plurality of real-time current value sets, a corresponding flag code is assigned to each real-time current value set through the comparison relationship between the current value change rate and the change rate threshold, so as to classify or mark different real-time current value sets by the flag code.

[0085] Optionally, the determination of the flag code of each real-time current value set according to 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 comprises: if the absolute value of the current value change rate is less than the absolute value of the change rate threshold, determining the flag code of the real-time current value set as a 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 the flag code of the real-time current value set as 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 the flag code of the real-time current value set as a third code.

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

[0087] Specifically, according to the size relationship between the current value change rate itself and 0 and the size 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 real-time current value set, a second real-time current value set and a third 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 rule, the real-time current value set corresponding to the current change rate is determined as the first real-time current value set, and the flag code of the first real-time current value set is the 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 and the current value change rate is greater than 0 according to the above comparison rule, the real-time current value set corresponding to the current change rate is determined as the second real-time current value set, and the flag code of the second real-time current value set is the 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 and the current value change rate is less than 0 according to the above comparison rule, the real-time current value set corresponding to the current change rate is determined as the third real-time current value set, and the flag code of the third real-time current value set is the third code.

[0088] For example, 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 limited in the embodiment.

[0089] S240, determining the flag code string of the meter box according to the flag codes of the plurality of real-time current value sets.

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

[0091] Further, the processing unit 2 can send the flag code string to the display unit 3 for display, so as to provide a basis for distinguishing and planning for the operator who needs to adjust the phase and load switching of the meter box, and improve the work efficiency and accuracy of the operator.

[0092] In an optional embodiment, determining the flag code string of the meter box according to the flag codes of the plurality of real-time current value sets comprises: combining the flag codes according to the collection time sequence of the real-time current values in the plurality of real-time current value sets to form the flag code string of the meter box.

[0093] Specifically, the preset rule for forming the flag code string can be integrating the plurality of flag codes in the order of the collection time of the plurality of real-time current values. For example, the processing unit 2 integrates the first 7 real-time current values into a first real-time current value set and the eighth 15 real-time current values into a second real-time current value set in the order of collection time, determines that the flag code of the first real-time current value set is 0 and the flag code of the second real-time current value set is 1, and then combines the flag code 0 of the first real-time current value set and the flag code 1 of the second real-time current value set into a flag code string 01 according to the collection time of the real-time current values in the first real-time current value set being earlier than that in the second real-time current value set.

[0094] S250, determining the load change of the electric meter box according to the flag code string.

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

[0096] For example, 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 represents that the load change of the first real-time current value set is unchanged, 1 represents that the load change of the first real-time current value set is reduced, and -1 represents that the load change of the third real-time current value set is increased. Then, the processing unit 2 combines the first flag code, the second flag code, and the third flag code into a flag code string 01-1 according to the order of collection time, and determines the load change of the electric meter box over time based on the flag code string.

[0097] The embodiment determines the flag code of each real-time current value set by comparing the current value change rate and the change threshold, and determines the load change of the electric meter box based on the flag code string composed of the flag code of each real-time current value set, thereby improving the detection efficiency of the load change and facilitating the timely discovery of abnormal conditions of the electric meter box, which provides a reference for the allocation of power resources and the optimization of power grid operation.

[0098] Based on the above embodiment, Figure 5 is another flowchart of the detection method of the electric meter box provided by the embodiment of the present application, Figure 5 The detection method shown in the figure illustrates how to determine the current value change rate. As shown in the figure, Figure 5 The detection method of the electric meter box includes the following steps:

[0099] S310, acquire a plurality of real-time current value sets at the incoming line side of the meter box, each real-time current value set including a plurality of real-time current values.

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

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

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

[0103]

[0104] wherein, I avej is the average current value of the jth real-time current set, I j，i is the ith real-time current value of the jth real-time current value set, i and j are positive integers.

[0105] Specifically, after the processing unit 2 acquires the jth real-time current value set, the real-time current value set includes k real-time current values, and the k real-time current values and the value of k are substituted into the second calculation formula, so as to calculate the average current value of the jth real-time current value set. For example, the second real-time current value set acquired by the processing unit 2 includes four real-time current values, which are I 2，1 = 4A, I 2，2 = 8A, I 2，3 = 12A, I 2，4 = 16A, then the average current value I ave2 of the second real-time current value set is calculated by the second calculation formula, which is (4+8+12+16) ÷ 4 = 10A.

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

[0107]

[0108] wherein, a j is the current value change rate of the jth real-time current set, I avejI is an average current value of the jth real-time current set, p avej+1 I is an average current value of the j+1th real-time current set, p j T is a total collection time length of the plurality of real-time current values in the jth real-time current set, p j+1 T is a total collection time length of the plurality of real-time current values in the j+1th real-time current set; j is a positive integer.

[0109] Specifically, the processing unit 2 can calculate the current value change rate between the jth real-time current value set and the j+1th real-time current value set by substituting the average current value of the adjacent two real-time current value sets and the total collection time length of the two real-time current value sets into the first calculation formula in the time sequence, thereby helping to understand the load dynamic characteristics of the electric meter box in the power system. For example, the average current value of the first real-time current set is 5A, the total collection time length of the plurality of 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 length of the plurality of 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, determining the load change of the electric meter box according to the current value change rate.

[0111] The embodiment calculates the current value change rate of the real-time current value set by the first formula and the second formula, improves the calculation accuracy of the current value change rate, provides accurate data support for determining the load change, and helps the rational allocation of power resources.

[0112] On the basis of the above embodiment, Figure 6 is another flowchart of the detection method of the electric meter box provided by the embodiment of the present application, Figure 6 The detection method shown in the figure illustrates how to determine the load of the electric meter box. As shown in the figure, Figure 6 The detection method of the electric meter box further includes the following steps:

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

[0114] Specifically, the processing unit 2 periodically generates a current collection control instruction to make the current sensor 1 acquire the real-time current value of the electric meter box inlet side. The real-time current value collected by the current sensor 1 is sent to the processing unit 2, and the processing unit 2 stores the real-time current value and its corresponding collection time.

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

[0116] Specifically, the processing unit 2 can determine the maximum real-time current value and the minimum real-time current value based on all the real-time current values included in the plurality of real-time current value sets compared with each other, and can display the maximum real-time current value and the minimum real-time current value through the display unit 3 to provide a basis for distinguishing and planning for the operator who needs to operate the phase modulation and load switching of the meter box. For example, the processing unit 2 can draw a line graph of the real-time current value changing with time according to the real-time current value and the collection time corresponding thereto, 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 determine the real-time current average value by adding the maximum real-time current value and the minimum real-time current value and then dividing the sum by 2, and can display the real-time current average value through the display unit 3. The maximum real-time current value and the minimum real-time current value are two extreme points of current fluctuation, and the real-time current average value can reflect the fluctuation of the current within the total detection time period to some extent, so that an approximate average value can be quickly obtained, the calculation steps are simplified, and the efficiency of monitoring the operation state of the power system is improved.

[0119] S440, determining a load condition of the 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. In the case that the supply voltage at the inlet side of the meter box is unchanged, the current data report feeds back the load condition of the meter box, and can be displayed through the display unit 3, which helps the dispatching department to more accurately understand the load condition of the power system, thereby providing an important basis for fault diagnosis and power dispatching.

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

[0122] On the basis of the above embodiment, Figure 7 is another flow chart of the detection method of the meter box provided by the embodiment of the present application, Figure 7 The detection method shown in the figure illustrates how to determine the distribution condition of the meter box. As shown in Figure 7 The detection method of the meter box includes the following steps:

[0123] S510, acquire the acquisition time of each real-time current value.

[0124] S520, determine the maximum real-time current value and the minimum real-time current value according to the real-time current value.

[0125] S530, determine the 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 meter box according to the real-time current value, the acquisition time corresponding to each real-time current value, and the real-time current average value.

[0127] S550, determine the distribution of the meter box in the distribution network and the distribution of the new load according to the load change condition of the meter box and the load condition of the meter box.

[0128] Specifically, the load condition of the meter box includes multiple real-time current values of the meter box, the acquisition time corresponding to each real-time current value, and the real-time current average value, which can represent the static characteristics of the load of the meter box at a certain time; and the load change condition of the meter box includes the current value change rate, which can represent the dynamic characteristics of the load. According to the flag code string output by different meter boxes, it can be known whether the load change of different meter boxes is the same, that is, the load change conditions of different meter boxes with the same flag code string are the same within the same detection time. According to the load change condition and the load condition of the meter box, the dynamic characteristics and static characteristics of the load during the use of the meter box can be known, thereby providing a reference basis for the distribution of the meter box in the distribution network and the distribution of the new load.

[0129] For example, the meter boxes with the same or similar flag code string are classified into the same load change condition, and the same load change condition includes a first meter box, a second meter box, a third meter box, and a 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 change conditions 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, the power supply scheme of the first meter box can be divided into three parts to form the distribution scheme of the second meter box, the third meter box, and the fourth meter box.

[0130] Based on the load change condition and the load condition of the meter box, the same load change condition type of the meter box is combined with the real-time current average value of each meter box within the detection time, which can improve the distribution efficiency of the low-voltage distribution network, effectively solve the three-phase imbalance, provide a reference for the newly connected load, ensure that the newly connected load will not cause a large fluctuation in the three-phase imbalance rate, and improve the power supply reliability.

[0131] On the basis of the above embodiments, Figure 8 is another flow chart of the detection method of the electric meter box provided by the embodiments of the present application, Figure 8 The detection method shown illustrates how to detect the fault condition of the electric meter box. As shown in the figure, Figure 8 The detection method of the electric meter box further includes the following steps:

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

[0133] Specifically, as shown in the figure, Figure 3 The processing unit 2 periodically generates temperature collection control instructions and sends them to the temperature sensor 4 installed at the junction of the electric meter box incoming line side. The temperature sensor 4 receives the periodic temperature collection control instructions and periodically collects the real-time temperature of the electric meter box incoming line side junction. 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 embodiments of the present application do not make specific limitations on the type of temperature sensor 4.

[0134] It should be noted that obtaining a plurality of real-time current value sets of the electric meter box incoming line side and obtaining the real-time temperature of the electric meter box incoming line side junction can be performed simultaneously, or the real-time temperature of the electric meter box incoming line side junction can be obtained after obtaining a plurality of real-time current value sets of the electric meter box incoming line side, or the real-time temperature of the electric meter box incoming line side junction can be obtained before obtaining a plurality of real-time current value sets of the electric meter box incoming line side. The embodiments do not make specific limitations on the order of obtaining the real-time current value set 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 clamp state of the junction according to the real-time temperature.

[0136] The 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 demand, and stored in the processing unit 2. When the temperature sensor 4 collects the real-time temperature of the electric meter box incoming line side junction and sends it to the processing unit 2, the processing unit 2 determines the clamp state of the junction based on the comparison result of the real-time temperature and the temperature threshold, and synchronously sends the clamp state and the corresponding electric meter box information to the jurisdiction power supply department, realizing the monitoring of the clamp state of the junction.

[0138] For example, the preset temperature threshold is 60 DEG C, when the detected real-time temperature is greater than 60 DEG C, the comparison result is that the junction is heated, and it is determined that the state of the wire clamp at the junction is loose; when the detected real-time temperature is less than 60 DEG C, the comparison result is that the junction is not heated, and it is determined that the state of the wire clamp at the junction is clamped.

[0139] S630, determining the load change of the electric meter box according to the current value change rate; when the state of the wire clamp is loose, a loose warning is given.

[0140] Specifically, when the state of the wire clamp is loose, a warning can be given, which can include at least one of voice reminding, buzzer reminding, light reminding and the like, so that the user or the staff can know the state of the wire clamp at the junction of the electric meter box in a timely manner, and take corresponding measures, thereby improving the use safety of the electric meter box.

[0141] The embodiment periodically detects the temperature at the junction of the electric meter box through the temperature sensor, ensures the real-time of fault detection, is convenient to install, does not need to greatly change the existing electric power detection system, reduces the pressure of the power supply department in inspecting and investigating low-voltage area electric hazards, effectively solves the power outage accidents caused by loose wire clamp and broken wire at the junction of the electric meter box, reduces the failure rate, and realizes the pre-control of faults.

[0142] On the basis of the above embodiment, Figure 9 is another detection method flowchart of the electric meter box provided by the embodiment of the application, Figure 9 The detection method further illustrates how to detect the fault condition of the electric meter box. Figure 9 As shown in the figure, the detection method of the electric meter box further includes the following steps:

[0143] S710, obtaining a plurality of real-time current value sets of the electric meter box, and obtaining a real-time voltage of the electric meter box.

[0144] Specifically, as shown in the figure, Figure 3 The processing unit 2 periodically generates a voltage acquisition control instruction, and sends the voltage acquisition control instruction to the voltage sensor 5 installed at the incoming line side of the user electric meter box. The voltage sensor 5 receives the periodic voltage acquisition control instruction, thereby periodically collecting the real-time voltage at the junction of the electric meter box. The voltage sensor 5 can be a resistance divider type voltage sensor, a capacitor divider type voltage sensor, a Hall voltage sensor or an electronic voltage sensor, and the type of the voltage sensor 5 is not limited in the embodiment of the application.

[0145] It should be noted that the acquisition of the plurality of real-time current value sets of the meter box incoming line side and the acquisition of the real-time voltage of the meter box incoming line side can be performed simultaneously, or the real-time voltage of the meter box incoming line side can be acquired after the plurality of real-time current value sets of the meter box incoming line side are acquired, or the real-time voltage of the meter box incoming line side can be acquired before the plurality of real-time current value sets of the meter box incoming line side are acquired. The present embodiment does not specifically limit the acquisition order of the real-time current value sets and the real-time voltage.

[0146] S720, determining a current value change rate of the real-time current set according to the real-time current value, and determining a 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 overvoltage state.

[0148] Specifically, the voltage threshold range is preset in advance according to the actual application scene and demand, and the voltage threshold range is stored in the processing unit 2. After the real-time voltage of the meter box incoming line side collected by the voltage sensor 5 is sent to the processing unit 2, the processing unit 2 determines the voltage state of the meter box based on the comparison result of 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 as 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 as an overvoltage state, and the voltage state and the corresponding meter box information are synchronously sent to the jurisdiction power supply department, so as to realize the monitoring of the voltage state of the meter box incoming line side.

[0149] S730, determining a load change of the meter box according to the current value change rate, and performing low voltage warning or overvoltage warning.

[0150] Specifically, when the voltage state is a low voltage state, low voltage warning is performed; when the voltage state is an overvoltage state, overvoltage warning is performed. The low voltage warning and the overvoltage warning can include at least one of voice warning, buzzer warning, light warning and the like, so that the user or the staff can timely know the voltage state of the meter box incoming line side, and take corresponding measures, thereby improving the use safety of the user's meter box.

[0151] The present embodiment periodically detects the voltage of the meter box incoming line side through the temperature sensor, ensures the real-time of fault detection, is convenient to install, does not need to greatly change the existing power detection system, reduces the pressure of the power supply department to patrol and investigate low-voltage area electricity-related hazards, realizes the pre-control of faults, and improves the stability of power supply.

[0152] Based on the same inventive concept, Figure 10 is a structural schematic diagram of a detection device for a meter box provided by the present embodiment, like Figure 10As shown, the detection device of the electric meter box comprises an acquisition module 810, a calculation module 820 and a processing module 830.

[0153] The acquisition module 810 is configured to acquire a plurality of real-time current value sets at the incoming line side of the electric meter box, each of the real-time current value sets comprising a plurality of real-time current values.

[0154] The calculation module 820 is configured to determine a current value variation rate of the real-time current set according to the real-time current values.

[0155] The processing module 830 is configured to determine a load variation condition of the electric meter box according to the current value variation rate.

[0156] The detection device of the electric meter box provided by the embodiments of the present application can execute the detection method of the electric meter box provided by any of the embodiments of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0157] Figure 11 A structural schematic diagram of the detection device 80 of the electric meter box that can be used to implement the embodiments of the present application is shown. The detection device of the electric meter box is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The detection device of the electric meter box can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, 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 meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0158] As shown, Figure 11 The detection device 80 of the electric meter box comprises at least one processor 81, and a memory, such as a read-only memory (ROM) 82, a random access memory (RAM) 83, etc., which is in communication connection with the at least one processor 81, wherein the memory stores a computer program that can be executed by the at least one processor. The processor 81 can execute 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 into the random access memory (RAM) 83. In the RAM 83, various programs and data required for the operation of the detection 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. An input / output (I / O) interface 85 is also connected to the bus 84.

[0159] A plurality of components in the meter box detection apparatus 80 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 magnetic 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 detection apparatus 80 to exchange information / data with other apparatuses through a computer network, such as the Internet, and / or various telecommunication networks.

[0160] The processor 81 can be various general and / or special purpose 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 specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 81 performs various methods and processes described above, such as the meter box detection method.

[0161] In some embodiments, the meter box detection method can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 88. In some embodiments, part or all of the computer program can be loaded and / or installed onto the detection apparatus 80 via the ROM 82 and / or the communication unit 89. When the computer program is loaded onto the RAM 83 and executed by the processor 81, one or more steps of the meter box detection method described above can be performed. Alternatively, in other embodiments, the processor 81 can be configured to perform the meter box detection method by any other suitable means, such as by means of firmware.

[0162] The various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, specially designed application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0163] Computer programs for implementing the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the computer program running on the processor implements the functions / operations specified in the flowcharts and / or block diagrams. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package and partially on a remote machine or entirely on a remote machine or server.

[0164] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal form, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0165] To provide for interaction with a user, the systems and techniques described here can be implemented on a detection device of an electrical meter cabinet having 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) by which the user can provide input to the detection device of the electrical meter cabinet. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0166] The systems and techniques described herein can be implemented in a computing system that includes a back end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front end component, e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described herein, or any combination of such back end, middleware, or front end components. The components of the system can 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] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can 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 large management difficulty and weak business scalability in traditional physical host and VPS service.

[0168] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in series, or executed in different orders, as long as the desired results of the technical solutions of the present disclosure can be achieved, and the present disclosure is not limited herein.

[0169] The specific implementation described above does not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for detecting an electricity meter box, characterized in that, include: Obtain multiple sets of real-time current values ​​on the incoming side of the meter box, each set of real-time current values ​​including multiple real-time current values; The rate of change of the current value set is determined based on the real-time current value; The load change of the meter box is determined based on the rate of change of the current value; The load change of the meter box characterizes the dynamic characteristics of the load. The detection method further includes: Acquire the acquisition time for each of the real-time current values; The maximum and minimum real-time current values ​​are determined based on the real-time current values. The average real-time current value is determined based on the maximum and minimum real-time current values. The load status of the meter box is determined based on the real-time current value, the acquisition time, and the average real-time current value. The load condition of the meter box represents the static characteristics of the load of the meter box at a certain moment. After determining the load change of the meter box based on the rate of change of the current value, the method further includes: The distribution of the meter box in the power distribution network and the distribution of new loads are determined based on the load changes and load conditions of the meter box.

2. The detection method according to claim 1, characterized in that, Determining the load change of the meter box based on the rate of change of the current value includes: The flag code for each set of real-time current values ​​is determined based on the rate of change of the current value for each set of real-time current values ​​and the comparison relationship between the rate of change of the current value and the rate of change threshold. The identifier code string of the meter box is determined based on the identifier codes of the multiple sets of real-time current values; The load change of the meter box is determined based on the flag code string.

3. The detection method according to claim 2, characterized in that, A flag code for each set of real-time current values ​​is determined based on the rate of change of the current value for each set and the comparison relationship between the rate of change of the current value and a rate of change threshold, including: If the absolute value of the rate of change of the current value is less than the absolute value of the rate of change threshold, the flag code of the real-time current value set is determined to be the first code; If the absolute value of the rate of change of the current value is greater than or equal to the absolute value of the rate of change threshold, and the rate of change of the current value is greater than 0, the flag code of the real-time current value set is determined to be the second code; the second code is different from the first code; If the absolute value of the rate of change of the current value is greater than or equal to the absolute value of the rate of change threshold, and the rate of change of the current value is less than 0, the flag code of the real-time current value set is determined to be the third code; the third code is different from both the first code and the second code. The identifier code string of the meter box is determined based on the identifier codes of multiple sets of real-time current values, including: The flag code string of the meter box is formed by combining the flag codes according to the acquisition time sequence of the real-time current values ​​in the multiple sets of real-time current values.

4. The detection method according to claim 1, characterized in that, Determining the rate of change of the real-time current value set based on the real-time current value includes: The average current value of each set of real-time current values ​​is determined based on the real-time current values. Based on the average current value, the rate of change of the current value in the real-time current value set is calculated using the first formula; The first calculation formula is: ； in, Let be the rate of change of the current value in the j-th set of real-time current values. Let be the average current value of the j-th set of real-time current values. The average current value of the (j+1)th set of real-time current values. The total acquisition time of multiple real-time current values ​​in the j-th set of real-time current values ​​is given by [the relevant data type]. The total acquisition time of multiple real-time current values ​​in the (j+1)th set of real-time current values; j is a positive integer.

5. The detection method according to claim 4, characterized in that, Determining the average current value for each set of real-time current values ​​based on the real-time current values ​​includes: Based on the real-time current values, the average current value of each set of real-time current values ​​is calculated using the second formula; The second calculation formula is as follows: ； in, Let be the average current value of the j-th set of real-time current values. Let i be the i-th real-time current value in the j-th set of real-time current values, where i and j are both positive integers.

6. The detection method according to claim 1, characterized in that, The detection method further includes: Obtain the real-time temperature at the inlet connection point of the meter box; The state of the wire clamp at the splice is determined based on the real-time temperature; wherein, the state of the wire clamp includes a loose state and a tight state; When the clamp is in a loose state, a loosening warning will be issued.

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

8. A testing device for an electric meter box, used to perform the testing method for an electric meter box as described in any one of claims 1-7, characterized in that, include: Acquisition module, calculation module, and processing module; The acquisition module is used to acquire multiple sets of real-time current values ​​on the incoming side of the meter box, and each set of real-time current values ​​includes multiple real-time current values. The calculation module is used to determine the rate of change of the current value set of the real-time current values ​​based on the real-time current values. The processing module is used to determine the load change of the meter box based on the rate of change of the current value.

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