Overload protection method, electronic equipment and storage medium

Abstract

The invention provides an overload protection method, electronic equipment and a storage medium, and relates to the technical field of power utilization protection. The method comprises the following steps: acquiring timing values of a slip timer, an overload timer and N interval timers in the electric energy meter and a count value of a trip counter; when the timing value of the slip timer is smaller than a first threshold value, the electric energy meter is controlled not to be automatically switched on according to the count value of the tripping counter and a first preset number of times, and a zero clearing operation is executed when the electric energy meter receives a remote switching-on command for switching on, or an overload timer is cleared when the electric energy meter is automatically switched on; and when the timing value of the slip timer is greater than or equal to the first threshold value, zero clearing operation is executed according to the count value of the trip counter and the second preset number of times, or updating operation is executed when the electric energy meter is automatically switched on, so that accurate and multi-dimensional overload protection is realized.

Description

Technical Field

[0001] The present application relates to the technical field of power protection, and in particular to an overload protection method, electronic equipment and storage medium. Background Art

[0002] Power overload protection is a protection mechanism that aims to prevent electrical equipment from overheating, damage, or even fire due to excessive load, thereby ensuring the safe operation of the power system.

[0003] In the related art, overload protection is usually achieved by detecting the power or current of the load and comparing it with a preset overload threshold. When the power or current is greater than the preset overload threshold, the electric energy meter is controlled to automatically trip.

[0004] However, the above scheme adopts a single threshold value, which cannot be adjusted dynamically according to the change of load, and is prone to misjudgment or missed judgment, resulting in low accuracy of overload detection and inability to achieve accurate overload protection. Summary of the invention

[0005] The present application provides an overload protection method, an electronic device and a storage medium to solve the problem that a single threshold value is used and cannot be dynamically adjusted according to load changes, which easily leads to misjudgment or missed judgment, resulting in low accuracy of overload detection and inability to achieve accurate overload protection. The application realizes accurate overload detection and accurate overload protection, thereby achieving safe protection of users' electricity use.

[0006] In a first aspect, the present application provides an overload protection method, comprising: Obtain the timing values ​​of the slip timer, overload timer, N interval timers and the count value of the trip counter in the electric energy meter, where N is an integer greater than or equal to 1; the overload timer is used to start timing when the electric energy meter detects an overload, and is cleared after the electric energy meter has tripped once and closed once in sequence; the trip counter is used to add 1 to the count value when the electric energy meter automatically trips; the slip timer is used to start timing when the electric energy meter automatically trips for the first time; the nth interval timer is used to start timing when the electric energy meter detects an overload for the nth time and controls the electric energy meter to automatically trip, and end timing when the electric energy meter automatically trips for the n+1th time; the value of n is greater than or equal to 1 and less than or equal to N; When the timing value of the slip timer is less than the first threshold value, the electric energy meter is controlled not to close automatically according to the count value of the trip counter and the first preset number of times, and a reset operation is performed when the electric energy meter receives a remote closing command to close the circuit, or the overload timer is reset when the electric energy meter closes automatically; wherein the reset operation includes: reset the trip counter, the overload timer, the slip timer and all the interval timers; When the timing value of the slip timer is greater than or equal to the first threshold, the clearing operation is performed according to the count value of the trip counter and the second preset number of times, or, when the electric energy meter is automatically closed, an updating operation is performed, wherein the updating operation includes: updating the slip timer according to the timing value of the slip timer and the timing value of the first interval timer T1, and updating the interval timer T N+1 The timing value is assigned to the interval timer T N , the operation of reducing the count value of the trip counter by 1.

[0007] In a possible design, the controlling the electric energy meter not to automatically close according to the count value of the trip counter and the first preset number of times, and performing a clearing operation when the electric energy meter receives a remote closing command to close, or clearing the overload timer when the electric energy meter automatically closes, includes: When the count value of the trip counter is greater than or equal to the first preset number of times, the electric energy meter is controlled not to close automatically, and a clearing operation is performed when the electric energy meter receives a remote closing command to close the circuit; When the count value of the trip counter is less than the first preset number of times, the overload timer is cleared when the electric energy meter is automatically closed.

[0008] In a possible design, performing the clearing operation according to the count value of the trip counter and the second preset number of times, or performing the updating operation when the electric energy meter is automatically closed, includes: When the count value of the trip counter is less than or equal to a second preset number of times, performing the clearing operation; When the count value of the trip counter is greater than a second preset number, the updating operation is performed when the electric energy meter is automatically closed.

[0009] In one possible design, the method further includes: When the timing value of the overload timer is less than a preset overload threshold, the overload timer is cleared.

[0010] In one possible design, the method further includes: If the electric energy meter does not receive a remote closing command, the electric energy meter is controlled to be powered off and then powered on and the clearing operation is performed, so that the electric energy meter is automatically closed again.

[0011] In one possible design, the method further includes: When the timing value of the slip timer is less than the first threshold value and the counting value of the trip counter is greater than or equal to the first preset number of times, a reminder command is sent to the user, wherein the reminder command is used to indicate that a continuous overload trip occurs.

[0012] In a second aspect, the present application provides an overload protection device, comprising: a module for executing the method in the first aspect and any possible design of the first aspect.

[0013] The beneficial effects provided in the above-mentioned second aspect and various possible designs of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and various possible implementation methods of the first aspect, and will not be repeated here.

[0014] In a third aspect, the present application provides an electronic device, including: a first processor; The first processor is used to execute the computer executable program or instructions in the memory, so that the electronic device executes the method in the first aspect and any possible design of the first aspect.

[0015] In a fourth aspect, the present application provides an electronic device comprising: a memory and a second processor; the memory is used to store program instructions; the second processor is used to call the program instructions in the memory so that the electronic device executes the method in the first aspect and any possible design of the first aspect.

[0016] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor in an electronic device, the computer program implements the method in the first aspect and any possible design of the first aspect.

[0017] Through the overload protection method provided in the first aspect, the timing values ​​of the slip timer, the overload timer, the N interval timers and the count value of the trip counter in the electric energy meter are obtained, so as to know the time length after the first automatic trip, the time length from each overload and trip to closing, the time length between two trips, and the number of trips, so as to facilitate overload protection. It is judged in real time whether the timing value of the slip timer is less than the first threshold value. If the timing value of the slip timer is less than the first threshold value, according to the count value of the trip counter and the first preset number of times, the electric energy meter is controlled not to close automatically, and a reset operation is performed when the electric energy meter receives a remote closing command to close, or the overload timer is reset when the electric energy meter closes automatically, so that within the time length indicated by the first threshold value, if a trip (i.e., an overload) greater than or equal to the first preset number of times occurs, the automatic closing of the electric energy meter can be stopped in time to achieve complete power failure of the circuit, thereby achieving overload protection. If the timing value of the slip timer is greater than or equal to the first threshold, a reset operation is performed according to the count value of the trip counter and the second preset number of times, or an update operation is performed when the electric energy meter automatically closes, so as to eliminate the duration from the first trip to the second trip from the timing value of the slip timer. This ensures that every time an overload greater than or equal to the first preset number of times occurs within the duration indicated by the first threshold, that is, when there is frequent overload within a certain duration, the electric energy meter will no longer automatically close, so that the circuit is completely powered off, and accurate overload protection is achieved. Based on this, accurate and multi-dimensional overload protection is achieved, thereby achieving safe protection of users' electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flowchart of an overload protection method provided in one embodiment of the present application.

[0019] Figure 2 A flowchart of a determination method provided in one embodiment of the present application.

[0020] Figure 3 A flowchart of a determination method provided in one embodiment of the present application.

[0021] Figure 4 A schematic diagram of the structure of an overload protection device provided in one embodiment of the present application.

[0022] Figure 5 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application.

[0023] Figure 6 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0024] In this application, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c alone can mean: a alone, b alone, c alone, a and b in combination, a and c in combination, b and c in combination, or a, b, and c in combination, where a, b, and c can be single or multiple. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0026] The terms "connected" and "connected" should be understood in a broad sense. For example, the "connected" or "connected" of a circuit structure can refer to not only physical connection, but also electrical connection or signal connection. For example, it can be directly connected, that is, physically connected, or indirectly connected through at least one intermediate element, as long as the circuit is connected, or it can be the internal connection of two elements; signal connection can refer to signal connection through a circuit or through a media medium, such as radio waves. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] Exemplarily, the present application provides an overload protection method, device, electronic device, computer-readable storage medium and computer program product. By setting a slip interval and a combination of multiple judgment logics, when an overload occurs, the number of automatic tripping times, the interval duration between each automatic tripping, the frequency of automatic tripping within a certain period of time, and the logic of overload recovery are taken into consideration, thereby achieving precise and multi-dimensional overload protection, thereby realizing safe protection of users' electricity use.

[0028] The overload protection method may be performed by an electronic device, or may be performed by an overload protection device in the electronic device. The overload protection device may be implemented by a combination of software and / or hardware. For example, the overload protection device may be an application (APP), a web page, or a public account. Alternatively, the overload protection device may be a control chip in an electric energy meter.

[0029] The electronic device may be an electric energy meter, a server, a desktop computer, a mobile phone, a tablet computer, a laptop computer, a wearable device, a vehicle-mounted device, or an augmented reality (AR) / virtual reality (VR) device, etc. In order to simplify the description, the embodiment of the present application is described by taking the execution by the overload protection device as an example.

[0030] Next, combine Figures 1 to 3 , the overload protection method provided in the embodiment of the present application is described.

[0031] See also Figure 1 , Figure 1 The following is a flow chart of an overload protection method provided by an embodiment of the present application. Figure 1 As shown, the method includes: S101. The overload protection device obtains the timing values ​​of the slip timer, the overload timer, N interval timers and the counting value of the tripping counter in the electric energy meter.

[0032] Wherein, N is an integer greater than or equal to 1.

[0033] Among them, the overload timer is used to start timing when the electric energy meter detects an overload, and is reset after the electric energy meter goes through one trip and one closing in sequence.

[0034] The overload protection device can detect whether an overload occurs by itself, or receive overload information sent by the electric energy meter to know whether an overload occurs.

[0035] The overload protection device or the electric energy meter can detect the occurrence of overload by the following method 1 and method 2.

[0036] Mode 1: detect the power of the load in real time, and when the power of the load is greater than or equal to a preset power threshold, determine that an overload has been detected.

[0037] Mode 2: Detect the current of the load in real time, and when the current of the load is greater than or equal to a preset current threshold, determine that an overload has been detected.

[0038] Among them, the preset power threshold or the preset current threshold can be set through the overload threshold data item 04000E01 in the electric energy meter. The overload threshold data item includes 3 bytes and is encoded in BCD, for example: XX.XXXX, in units of kW or A. The overload threshold data item can be set through the factory default setting, remote setting or local button setting, so that the preset power threshold or preset current threshold can be flexibly configured.

[0039] When an overload is detected, the overload protection device can start the overload timer. If the overload continues, the overload timer will continue to count. Therefore, the overload protection device can record the duration of each overload through the overload timer, so as to determine whether to start the interval timer for interval timing or to make the electric energy meter work normally according to the duration of the overload.

[0040] The overload protection device monitors the timing value of the overload timer in real time.

[0041] Specifically, the circuit is designed to allow overload for a certain period of time. When the timing value of the overload timer is less than the preset overload threshold, that is, when the duration of the overload is less than the preset overload threshold, the overload protection device can control the overload timer to reset and the electric energy meter to enter a normal working state. Based on this, when the duration of an overload is short, the overload will not affect the safety of the circuit. Therefore, the overload protection device can ignore the overload and continue to judge the next overload, thereby avoiding misjudgment and improving the accuracy of overload protection.

[0042] When the timing value of the overload timer is greater than or equal to the preset overload threshold, the electric energy meter automatically trips. This can protect the circuit in time after the electric energy meter is overloaded for more than a certain period of time. The overload protection device needs to take this overload into the overload protection process, control the trip counter to count once, and control the slip timer and interval timer to start timing.

[0043] The preset overload threshold may be 1 minute.

[0044] The trip counter is used to increase the count value by 1 when the electric energy meter automatically trips.

[0045] When the electric energy meter automatically trips, the overload protection device can add 1 to the count value of the trip counter, so that the number of trips can be recorded through the trip counter.

[0046] After the first time period of the electric energy meter automatically tripping, the electric energy meter will automatically close. At this time, if the overload protection device detects that the electric energy meter automatically closes, the overload timer can be reset to complete an overload timing. The first time period can be 3 minutes, that is, the electric energy meter will automatically close 3 minutes after the automatic tripping.

[0047] Among them, the slip timer is used to start timing when the electric energy meter automatically trips for the first time.

[0048] When the electric energy meter automatically trips for the first time, the overload protection device can start the timing of the slip timer. Based on this, the overload protection device can judge the frequency of tripping within a certain period of time according to the timing value in the slip timer and the count value in the trip counter, so as to perform circuit protection according to the frequency of tripping within a certain period of time, thereby realizing one-dimensional overload protection.

[0049] The nth interval timer is used to start timing when the electric energy meter detects the nth overload and controls the electric energy meter to automatically trip, and ends timing when the electric energy meter automatically trips for the n+1th time. In other words, each interval timer can record the time between two automatic trips.

[0050] The value of n is greater than or equal to 1 and less than or equal to N.

[0051] Taking six tripping as an example, as shown in Table 1 below, the overload protection device can obtain the timing values ​​of five interval timers.

[0052] Table 1

[0053] Based on this, the overload protection device can obtain the time interval between two automatic tripping events according to the timing value of the interval timer.

[0054] S102: The overload protection device determines in real time whether the timing value of the slip timer is less than a first threshold.

[0055] If the timing value of the slip timer is less than the first threshold, the overload protection device executes S103; if the timing value of the slip timer is greater than or equal to the first threshold, the overload protection device executes S104.

[0056] According to the timing value of the slip timer, the overload protection device can know the duration after the first automatic tripping occurs, and execute one overload protection mode within the duration indicated by the first threshold. When the duration exceeds the first threshold, another overload protection mode is executed, thereby combining the number, duration and frequency of overloads to achieve dynamic overload protection.

[0057] The first threshold value can be set according to the judgment cycle of the overload protection, for example, 59 minutes. Based on this, plus the 1 minute duration of the overload, the overload protection can be performed with a cycle of 1 hour.

[0058] The overload protection device can perform the judgment of S102 in real time during the timing of the slip timer, so as to perform overload protection in real time.

[0059] S103. The overload protection device controls the electric energy meter to stop automatically closing according to the count value of the trip counter and the first preset number of times, and performs a clearing operation when the electric energy meter receives a remote closing command to close, or clears the overload timer when the electric energy meter automatically closes.

[0060] The clearing operation includes: clearing the trip counter, overload timer, slip timer and all interval timers.

[0061] If the timing value of the slip timer is less than the first threshold, then the overload protection device can perform overload protection in S103 within the duration indicated by the first threshold. The overload protection device can determine the frequency of tripping within the duration indicated by the first threshold by combining the number of trips, that is, the count value of the trip counter.

[0062] Specifically, if the count value of the trip counter is greater than or equal to the first preset number of times, that is, when the overload occurs frequently within a certain period of time, the overload protection device can decide not to automatically close the circuit after the electric energy meter automatically trips, thereby completely cutting off the power of the circuit and completing an overload protection.

[0063] Among them, the first preset number of times can be 6 times.

[0064] The overload protection device may send a non-automatic closing instruction to the electric energy meter so that the electric energy meter does not automatically close, or the overload protection device may directly control the electric energy meter not to automatically close.

[0065] At this time, the user needs to handle the overload fault, and after the handling is completed, send a remote closing command to the electric energy meter. The electric energy meter closes according to the remote closing command. After the overload protection device detects that the electric energy meter is closed, it performs a zeroing operation and restarts the next round of overload protection. If the remote closing command sent by the user is not received, the overload protection device can control the electric energy meter to power off and then power on and perform a zeroing operation to make the electric energy meter automatically close again.

[0066] If the count value of the trip counter is less than the first preset number of times, the electric energy meter will perform normal automatic closing, and the overload protection device will clear the overload timer and continue to wait for the next overload to occur.

[0067] Based on this, when the timing value of the slip timer is less than the first threshold, if a first preset number of overloads occurs, the overload protection device can control the electric energy meter not to automatically close, thereby realizing overload protection that combines multiple judgments of duration, number, and frequency, and improving the accuracy of overload protection.

[0068] S104. The overload protection device performs a clearing operation according to the count value of the trip counter and a second preset number of times, or performs an updating operation when the electric energy meter is automatically closed.

[0069] If the timing value of the slip timer is greater than or equal to the first threshold, it means that the overload protection device has not performed the operation of clearing the slip timer within the time indicated by the first threshold, that is, the number of tripping events within the time indicated by the first threshold has not reached the first preset number. Then when the time exceeds the time indicated by the first threshold, the overload protection device can perform overload protection through S104.

[0070] Based on this, the overload protection device continues to judge how many times the tripping has occurred at this time according to the count value of the trip counter. If the count value of the trip counter is greater than the second preset number of times, that is, the electric energy meter has tripped for the count value number of times after the time indicated by the first threshold has continued, at this time, the overload protection device can perform an update operation when the electric energy meter automatically closes.

[0071] The updating operation includes: updating the slip timer according to the timing value of the slip timer and the timing value of the first interval timer T1, and setting the interval timer T N+1 The timing value is assigned to the interval timer T N , the operation of reducing the count value of the trip counter by 1.

[0072] Among them, the overload protection device can assign the difference between the timing value of the slip timer and the timing value of the first interval timer T1 to the slip timer, thereby eliminating the duration from the first trip to the second trip from the timing value of the slip timer. In this way, the overload protection device can determine whether the updated timing value of the slip timer is less than the first threshold value according to the updated timing value of the slip timer and again according to the method of S102. If it is less than the first threshold value, the overload protection device can continue to perform overload protection according to the method of S103, ensuring that each time an overload greater than or equal to the first preset number of times occurs within the duration indicated by the first threshold, the electric energy meter will no longer automatically close the circuit, and the circuit will be completely powered off, thereby achieving accurate overload protection. If the timing value of the updated slip timer is greater than or equal to the first threshold value, the overload protection device can continue to perform overload protection according to the method of S104, perform a zeroing operation, or continue to update the timer.

[0073] For example, if the first threshold is 1 hour and the count value of the trip counter is 6 times, based on Table 1, the timing value of the slip timer T0 and the timing values ​​of the interval timers T1 to T5 are shown in Table 2 below: Table 2

[0074] The overload protection device reduces the count value of the trip counter by 1, that is, 5 times, and assigns the difference between the timing value of the slip timer T0 and the counting value of the interval timer T1, T0-T1=50 minutes, to the slip timer T0, assigns the timing value of the interval timer T2 to the interval timer T1, assigns the timing value of the interval timer T3 to the interval timer T2, and so on. The timing values ​​of the updated timers are shown in Table 3 below: Table 3

[0075] Based on this, the slip timer T0 and the interval timer T5 continue to time, and the overload protection device detects that the timing value of the slip timer T0 is less than the first threshold value, that is, it enters S103. If another overload occurs at this time and the electric energy meter automatically trips, the count value of the trip counter is increased by 1 and becomes 6 times. The interval timer T5 stops timing. If the timing value of the interval timer T5 is 5 minutes, the timing value of the slip timer T0 is 55 minutes, and the first preset number of times is 6 times, that is, the number of tripping times is greater than or equal to the first preset number, then the overload protection device can decide not to automatically close the circuit after the electric energy meter automatically trips, thereby completely cutting off the power to the circuit and completing an overload protection.

[0076] Based on this, through the slip interval method, after each timing value of the slip timer is greater than or equal to the duration indicated by the first threshold, the overload protection device will subtract the time between the first automatic tripping and the second automatic tripping, ensuring that each time an overload greater than or equal to the first preset number of times occurs within the duration indicated by the first threshold, the electric energy meter will no longer automatically close, and the circuit will be completely powered off, thereby achieving accurate overload protection.

[0077] If the count value of the trip counter is less than or equal to the second preset number of times, the overload protection device can reset all timers and trip counters and restart the next round of overload protection.

[0078] Among them, the second preset number can be 1, that is, if the count value of the trip counter is less than or equal to 1, that is, within a time period greater than or equal to the first threshold, the electric energy meter has only tripped once automatically, or no tripping has occurred, then the overload protection device can clear all timers and trip counters and restart the judgment of overload protection. If the count value of the trip counter is greater than 1, then the overload protection device can perform an update operation to update all timers and trip counters. Thereby achieving accurate overload protection.

[0079] In the embodiment of the present application, the overload protection device obtains the timing values ​​of the slip timer, the overload timer, the N interval timers and the count value of the trip counter in the electric energy meter, so as to know the time length after the first automatic trip, the time length from each overload and trip to closing, the time length between two trips, and the number of trips, so as to facilitate overload protection. The overload protection device determines in real time whether the timing value of the slip timer is less than the first threshold value. If the timing value of the slip timer is less than the first threshold value, the overload protection device controls the electric energy meter to stop closing automatically according to the count value of the trip counter and the first preset number of times, and performs a zeroing operation when the electric energy meter receives a remote closing command to close, or clears the overload timer when the electric energy meter automatically closes, so that within the time length indicated by the first threshold value, if a trip (i.e., an overload) greater than or equal to the first preset number of times occurs, the automatic closing of the electric energy meter can be stopped in time to achieve complete power failure of the circuit, thereby achieving overload protection. If the timing value of the slip timer is greater than or equal to the first threshold, the overload protection device performs a zeroing operation according to the count value of the trip counter and the second preset number of times, or performs an update operation when the electric energy meter automatically closes, so as to eliminate the duration from the first trip to the second trip from the timing value of the slip timer. In this way, it can be ensured that the overload protection device will not automatically close the electric energy meter every time an overload greater than or equal to the first preset number of times occurs within the duration indicated by the first threshold, that is, when the overload occurs frequently within a certain duration, so that the circuit is completely powered off, and accurate overload protection is achieved. Based on this, accurate and multi-dimensional overload protection is achieved, thereby realizing the user's electricity safety protection.

[0080] Based on the above exemplary description, in S103, the overload protection device can be implemented as follows: Figure 2 In the method shown, according to the count value of the trip counter and the first preset number of times, the electric energy meter is controlled to no longer automatically close, and a clearing operation is performed when the electric energy meter receives a remote closing command to close, or the overload timer is cleared when the electric energy meter automatically closes.

[0081] See also Figure 2 , Figure 2 A flowchart of a judgment method provided in one embodiment of the present application is shown in FIG. Figure 2 As shown, the method includes: S201. The overload protection device determines whether the count value of the trip counter is greater than or equal to a first preset number of times.

[0082] If the count value of the trip counter is greater than or equal to the first preset number of times, the overload protection device executes S202; if the count value of the trip counter is less than the first preset number of times, the overload protection device executes S203.

[0083] S202. The overload protection device controls the electricity meter not to automatically close the switch, and performs a clearing operation when the electricity meter receives a remote closing command to close the switch.

[0084] Based on this, when the count value of the trip counter is greater than or equal to the first preset number of times, that is, when there is frequent overload within a certain period of time, the overload protection device decides not to automatically close the switch after the electricity meter trips automatically, realizes a complete power-off of the circuit, and completes an accurate overload protection.

[0085] S203. The overload protection device clears the overload timer when the electricity meter automatically closes the switch.

[0086] Based on this, the overload protection device can continue to detect the next overload.

[0087] Based on the above exemplary description, in S104, the overload protection device can perform a clearing operation according to the count value of the trip counter and the second preset number of times in the following Figure 3 shown manner, or perform an update operation when the electricity meter automatically closes the switch.

[0088] Please refer to Figure 3 , Figure 3 which is a schematic flowchart of a judgment method provided by an embodiment of the present application. As Figure 3 shown, the method includes: S301. The overload protection device determines whether the count value of the trip counter is less than or equal to the second preset number of times.

[0089] If the count value of the trip counter is less than or equal to the second preset number of times, the overload protection device executes S302; if the count value of the trip counter is greater than the second preset number of times, the overload protection device executes S303.

[0090] S302. The overload protection device performs a clearing operation.

[0091] Based on this, the overload protection device can re-perform a new round of overload protection and improve the self-healing ability of the system.

[0092] S303. The overload protection device performs an update operation when the electricity meter automatically closes the switch.

[0093] Based on this, the overload protection device can eliminate the duration from the first trip to the second trip from the timing value of the slip timer, ensure that every time there is an overload greater than or equal to the first preset number of times within the duration indicated by the first threshold, the electricity meter can be made not to automatically close the switch, realize a complete power-off of the circuit, and thus realize accurate overload protection.

[0094] Based on the above exemplary description, the overload protection device can also send a reminder command to the user when the timing value of the slip timer is less than the first threshold and the count value of the trip counter is greater than or equal to the first preset number of times. The reminder command is used to indicate the occurrence of a continuous overload trip.

[0095] Based on this, a continuous overload tripping fault can be reported to the user, and the user can be warned to ensure that the user can handle the fault in time, thereby improving the user experience.

[0096] Among them, the overload protection device can report the fault to the user by monitoring the status word code, and the status word code is shown in Table 4 below: Table 4

[0097] When the timing value of the slip timer is less than the first threshold value and the counting value of the trip counter is greater than or equal to the first preset number of times, bit 1 in the status word can be 1. When the overload protection device detects that bit 1 is set to 1, a reminder command is sent to the user, such as a text message reminder. If the electric energy meter automatically closes, bit 1 can be 0.

[0098] Among them, bit0 can be a trip counter, and the overload protection device detects the change of bit0 in real time and informs the user of the number of trips. The remaining bits 2 to 7 can be defined separately according to requirements and are not explained here.

[0099] Figure 4 This is a schematic diagram of the structure of an overload protection device provided in one embodiment of the present application. Figure 4 As shown, the device includes: an acquisition module 101 and a control module 102.

[0100] The acquisition module 101 is used to obtain the timing values ​​of the slip timer, the overload timer, N interval timers and the count value of the trip counter in the electric energy meter, where N is an integer greater than or equal to 1; the overload timer is used to start timing when the electric energy meter detects an overload, and is cleared after the electric energy meter has tripped once and closed once in sequence; the trip counter is used to add 1 to the count value when the electric energy meter automatically trips; the slip timer is used to start timing when the electric energy meter automatically trips for the first time; the nth interval timer is used to start timing when the electric energy meter detects an overload for the nth time and controls the electric energy meter to automatically trip, and ends timing when the electric energy meter automatically trips for the n+1th time; the value of n is greater than or equal to 1 and less than or equal to N; The control module 102 is used to control the electric energy meter not to close automatically according to the count value of the trip counter and the first preset number of times when the timing value of the slip timer is less than the first threshold value, and to perform a reset operation when the electric energy meter receives a remote closing command to close the circuit, or to reset the overload timer when the electric energy meter closes automatically; wherein the reset operation includes: reset the trip counter, the overload timer, the slip timer and all the interval timers; The control module 102 is used to perform a clearing operation according to the count value of the trip counter and the second preset number of times when the timing value of the slip timer is greater than or equal to the first threshold value, or perform an updating operation when the electric energy meter is automatically closed, and the updating operation includes: updating the slip timer according to the timing value of the slip timer and the timing value of the first interval timer T1, and updating the interval timer T N+1 The timing value is assigned to the interval timer T N , the operation of reducing the count value of the trip counter by 1.

[0101] It should be noted that the overload protection device of the embodiment of the present application can be used to implement the technical solution of the above-mentioned method embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0102] In some examples, the control module 102 is specifically configured to control the electric energy meter to no longer automatically close when the count value of the trip counter is greater than or equal to a first preset number of times, and to perform a zeroing operation when the electric energy meter receives a remote closing command to close; When the count value of the trip counter is less than the first preset number, the overload timer is cleared when the electric energy meter is automatically closed.

[0103] In some examples, the control module 102 is specifically configured to perform a clearing operation when the count value of the trip counter is less than or equal to a second preset number of times; When the count value of the trip counter is greater than the second preset number, an update operation is performed when the electric energy meter is automatically closed.

[0104] In some examples, the control module 102 is further configured to clear the overload timer when the timing value of the overload timer is less than a preset overload threshold.

[0105] In some examples, the control module 102 is further used to control the electric energy meter to power off and then power on and perform a reset operation if the electric energy meter does not receive a remote closing command, so that the electric energy meter automatically closes again.

[0106] In some examples, the overload protection device further includes a reminder module; The reminder module is used to send a reminder command to the user when the timing value of the slip timer is less than the first threshold value and the counting value of the trip counter is greater than or equal to the first preset number of times. The reminder command is used to indicate the occurrence of a continuous overload trip.

[0107] Figure 5 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 5 As shown, the electronic device may include: a first processor 201 and a memory 202, wherein the memory 202 stores a computer program, and when the first processor 201 executes the computer program, the embodiment of the present application is implemented. Figures 1 to 3 Overload protection method shown.

[0108] Figure 6 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 6 As shown, the electronic device may include: a second processor 301, and when the second processor 301 executes a computer executable program or an instruction in the memory to execute a computer program, the embodiment of the present application is implemented. Figures 1 to 3 Overload protection method shown.

[0109] Another embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the present application can be implemented. Figures 1 to 3 Overload protection method shown.

[0110] Another embodiment of the present application further provides a computer program product, including: an execution instruction, the execution instruction is stored in a readable storage medium, at least one processor of the electronic device can read the execution instruction from the readable storage medium, and at least one processor executes the execution instruction so that the electronic device implements the embodiment of the present application Figures 1 to 3 Overload protection method shown.

[0111] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0112] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0113] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An overload protection method, characterized in that: The method comprises: Obtain the timing values ​​of the slip timer, overload timer, N interval timers and the count value of the trip counter in the electric energy meter, where N is an integer greater than or equal to 1; the overload timer is used to start timing when the electric energy meter detects an overload, and is cleared after the electric energy meter has tripped once and closed once in sequence; the trip counter is used to add 1 to the count value when the electric energy meter automatically trips; the slip timer is used to start timing when the electric energy meter automatically trips for the first time; the nth interval timer is used to start timing when the electric energy meter detects an overload for the nth time and controls the electric energy meter to automatically trip, and end timing when the electric energy meter automatically trips for the n+1th time; the value of n is greater than or equal to 1 and less than or equal to N; When the timing value of the slip timer is less than the first threshold value, the electric energy meter is controlled not to close automatically according to the count value of the trip counter and the first preset number of times, and a reset operation is performed when the electric energy meter receives a remote closing command to close the circuit, or the overload timer is reset when the electric energy meter closes automatically; wherein the reset operation includes: reset the trip counter, the overload timer, the slip timer and all the interval timers; When the timing value of the slip timer is greater than or equal to the first threshold, the clearing operation is performed according to the count value of the trip counter and the second preset number of times, or, when the electric energy meter is automatically closed, an updating operation is performed, wherein the updating operation includes: updating the slip timer according to the timing value of the slip timer and the timing value of the first interval timer T1, and updating the interval timer T N+1 The timing value is assigned to the interval timer T N , the operation of reducing the count value of the trip counter by 1.

2. The method according to claim 1, characterized in that The method of controlling the electric energy meter not to automatically close according to the count value of the trip counter and the first preset number of times, and performing a clearing operation when the electric energy meter receives a remote closing command to close, or clearing the overload timer when the electric energy meter automatically closes, comprises: When the count value of the trip counter is greater than or equal to the first preset number of times, the electric energy meter is controlled not to close automatically, and a clearing operation is performed when the electric energy meter receives a remote closing command to close the circuit; When the count value of the trip counter is less than the first preset number of times, the overload timer is cleared when the electric energy meter is automatically closed.

3. The method according to claim 1, characterized in that The performing of the clearing operation according to the count value of the trip counter and the second preset number of times, or the performing of the updating operation when the electric energy meter is automatically closed, comprises: When the count value of the trip counter is less than or equal to a second preset number of times, performing the clearing operation; When the count value of the trip counter is greater than a second preset number, the updating operation is performed when the electric energy meter is automatically closed.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: When the timing value of the overload timer is less than a preset overload threshold, the overload timer is cleared.

5. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: If the electric energy meter does not receive a remote closing command, the electric energy meter is controlled to be powered off and then powered on and the clearing operation is performed, so that the electric energy meter is automatically closed again.

6. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: When the timing value of the slip timer is less than the first threshold value and the counting value of the trip counter is greater than or equal to the first preset number of times, a reminder command is sent to the user, wherein the reminder command is used to indicate that a continuous overload trip occurs.

7. An overload protection device, characterized in that: The device comprises: a module for executing the overload protection method according to any one of claims 1-6.

8. An electronic device, characterized in that: include: a first processor; The first processor is used to execute a computer executable program or instruction in the memory, so that the electronic device executes the overload protection method according to any one of claims 1 to 6.

9. An electronic device, characterized in that: include: at least one memory and at least one second processor; The memory is used to store computer executable programs or instructions; The second processor is used to call the computer executable program or instruction in the memory so that the electronic device executes the overload protection method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer-executable program or instruction, and the computer-executable program or instruction is configured to execute the overload protection method according to any one of claims 1 to 6.

Images