A method, system, electric energy meter, converged terminal, medium for preventing misoperation

Abstract

This invention discloses a method, system, electricity meter, fusion terminal, and medium for preventing false starts, relating to the field of power metering technology. The method includes the following steps: monitoring the real-time power value in the electricity metering circuit; when the real-time power value exceeds a starting power threshold, temporarily suspending the start and temporarily buffering the energy; initiating an extended observation period, during which the number of energy pulses is monitored; if no energy pulse output is detected, it is determined to be a false start, and the buffered energy is cleared. By introducing mechanisms such as suspending the start, temporarily buffering the energy, and extending the observation period, this application can effectively distinguish between starts caused by actual power load and false starts caused by transient interference, residual current in the line, or standby power consumption of equipment in the electricity metering circuit. Therefore, it avoids the electricity meter from erroneously accumulating energy under non-actual power consumption conditions, significantly improving the accuracy and reliability of electricity metering, and solving the technical problem of traditional electricity meters being prone to false metering in complex power grid environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power metering, and in particular to a method and system for preventing false start, an electric energy meter, a fusion terminal and a medium. BACKGROUND

[0002] The start-up characteristic of an electric energy meter is one of its basic metering performances. When the load power is greater than the start-up power (Power_start), the electric energy meter should be able to start continuous metering. The standard specifies a start-up test method: under the conditions of reference voltage, reference frequency and power factor of 1, after the load current rises to a specified value (such as 0.004Ib for direct connection type electric energy meters), the electric energy meter should generate pulse output within a specified time (τ). The formula for calculating the start-up power is generally calculated according to the formula provided in the metering chip manual.

[0003] False start phenomenon: In actual power grids, line residual current, electromagnetic interference or device standby power consumption may cause the instantaneous power to exceed the start-up threshold, but it is not a real power consumption behavior. The traditional electric energy meter will be mis-started and accumulate electricity, causing metering errors.

[0004] Limitations of standard time limit: The standard start-up time (τ) mainly ensures the response of the meter to real small loads, but does not fully consider the duration of interference signals, resulting in ineffective filtering of non-power consumption nature of transient overcurrent. SUMMARY

[0005] In order to overcome the shortcomings of the prior art that false start and accumulate electricity cause metering errors. In a first aspect, the present application provides a method for preventing false start, comprising the following steps:

[0006] Monitoring the real-time power value in the electric energy metering circuit;

[0007] When the real-time power value is greater than the start-up power threshold, temporarily suspend the start-up and temporarily cache the electricity;

[0008] Start the extended observation period, monitor the number of electric energy pulses in the extended observation period, and if no electric energy pulse output is monitored, it is determined that it is a false start, and the cached electricity is cleared.

[0009] Optionally, before starting the extended observation period, monitor the electric energy pulse in the standard start-up time, and if the electric energy pulse is monitored, start the extended observation period.

[0010] Optionally, the length of the extended observation period is 2-5 times the standard start-up time.

[0011] Optionally, the cached electricity is cached by establishing a temporary cache area to cache the electricity accumulated in the extended observation period.

[0012] Optionally, if the power pulse output is monitored in the extended observation period, it is determined as a valid start, and the cached power is transferred into the main metering register.

[0013] Optionally, the standard start time is calculated according to the following formula:

[0014] .

[0015] In a second aspect, the present application provides a system for preventing false start of electric energy metering, comprising:

[0016] a power monitoring module for monitoring real-time power value in the electric energy metering circuit;

[0017] a temporary caching module for temporarily caching power when the real-time power value is greater than the start power threshold;

[0018] a start determination module for starting an extended observation period, monitoring the number of power pulses in the extended observation period, and determining false start if no power pulse output is monitored, and clearing the cached power.

[0019] In a third aspect, an electric energy meter comprises:

[0020] a memory for storing computer programs;

[0021] a processor for executing the programs stored in the memory to implement the steps of the false start prevention method.

[0022] In a fourth aspect, the present application provides a converged terminal comprising:

[0023] a memory for storing computer programs;

[0024] a processor for executing the programs stored in the memory to implement the steps of the false start prevention method.

[0025] In a fifth aspect, the present application provides a computer readable storage medium having a computer program stored thereon, which is executed by a processor to implement the false start prevention method.

[0026] The present application has the beneficial effects that: by introducing the mechanisms of temporary start delay, temporary power caching, and extended observation period, the present application can effectively distinguish between the start caused by real power consumption load and the false start caused by transient interference, line residual current, or device standby power consumption in the electric energy metering circuit; thus, the electric energy meter avoids false power accumulation under non-real power consumption conditions, significantly improves the accuracy and reliability of electric energy metering, and solves the technical problem of false metering of traditional electric energy meters in complex power grid environments. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in conjunction with the drawings and examples.

[0028] Figure 1 is a flowchart in some embodiments;

[0029] Figure 2 is another flowchart in some embodiments. DETAILED DESCRIPTION

[0030] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor are within the scope of protection of the present application. In addition, all the coupling / connections involved in the patent do not mean that the components are directly connected, but that a better coupling structure can be formed by adding or reducing coupling accessories according to the specific implementation. The technical features in the present application can be combined interactively without conflict.

[0031] The present application provides a method for preventing mis-start, comprising the following steps:

[0032] S1, monitoring the real-time power value in the electric energy metering circuit;

[0033] S2, when the real-time power value is greater than the starting power threshold, delaying the start and temporarily caching the electric quantity;

[0034] S3, starting an extended observation period, monitoring the number of electric energy pulses in the extended observation period, if no electric energy pulse output is monitored, it is determined that it is mis-start, and the cached electric quantity is cleared.

[0035] First, the real-time power value (denoted as P) in the electric energy metering circuit is monitored. The real-time power value can be obtained by sampling and calculating the voltage and current signals by the electric energy metering chip. For example, the metering chip can continuously sample the voltage and current in the circuit at a preset sampling frequency, and obtain the instantaneous power according to the product of the instantaneous voltage and the instantaneous current, and then calculate the real-time power value. The real-time power value can be updated and stored periodically.

[0036] Furthermore, when the real-time power value exceeds the starting power threshold (denoted as P_st), the system temporarily delays startup and buffers the energy consumption. Specifically, when the monitored real-time power value exceeds the preset starting power threshold, the system does not immediately record the energy consumption in the main metering register. An internal extended observation period timer (denoted as T_ext) can be started, and a temporary energy accumulator can be activated simultaneously. During the operation of this extended observation period timer, the energy pulses generated by the energy metering circuit will be counted and accumulated by the temporary energy accumulator to form buffered energy consumption. This starting power threshold can be preset according to the type and accuracy requirements of the energy meter.

[0037] Subsequently, an extended observation period is initiated, during which the number of energy pulses is monitored. After the real-time power value consistently exceeds the starting power threshold and enters a delayed start-up state, the system initiates an extended observation period. This extended observation period can be set to a fixed duration, such as several seconds. During this extended observation period, the system continuously monitors the energy pulse output of the energy metering circuit and counts the generated energy pulses.

[0038] Finally, if no power pulse output is detected during the extended observation period, it is determined to be a false start, and the cached power consumption is cleared. At the end of the extended observation period, the system checks the total number of power pulses detected during that period. If no power pulse output is detected during this period, it is considered that the current power over-threshold event was not caused by actual power consumption, but by interference or transient fluctuations. Therefore, the system will determine it to be a false start and perform a clearing operation, resetting the previously accumulated cached power consumption to zero, ensuring that this non-actual power consumption is not included in the final metering results.

[0039] This application, by introducing mechanisms such as delayed start-up, temporary buffering of electricity consumption, and extended observation period, can effectively distinguish between starts caused by actual electricity load and false starts caused by transient interference, residual line current, or equipment standby power consumption in the electricity metering circuit. This avoids the electricity meter from erroneously accumulating electricity under non-actual electricity consumption conditions, significantly improving the accuracy and reliability of electricity metering, and solving the technical problem of traditional electricity meters being prone to mismetering in complex power grid environments.

[0040] In some embodiments, before initiating the extended observation period, power pulses are monitored within the standard startup time; if a power pulse is detected, the extended observation period is initiated.

[0041] Specifically, the phrase "before initiating the extended observation period" limits the timing of subsequent monitoring steps, ensuring that the monitoring occurs before the extended observation period actually begins. This is a timing control mechanism used to make a quick judgment before entering a longer observation phase. For example, an intermediate state can be set in the system state machine so that when the real-time power value exceeds the starting power threshold, the system enters the "standard start-up time monitoring" state before entering the "extended observation period" state. Alternatively, software logic can be used to determine whether to execute a pre-emptive energy pulse monitoring function before calling the function or subroutine that initiates the extended observation period.

[0042] "Monitoring power pulses within the standard start-up time" refers to observing the pulse output of the power metering circuit within a specific time window specified in the power meter's design or industry standards. This "standard start-up time" is typically the minimum time requirement for the power meter to respond to a real, small load. By monitoring pulses within this time, it's possible to quickly determine if actual power consumption is occurring. For example, a standard start-up timer (denoted as T_std) can be used to control the monitoring duration. When the real-time power value exceeds the start-up power threshold, a standard start-up timer is activated, and when it reaches the standard start-up time, it's checked whether a power pulse signal has been received during this period. Alternatively, a counter can be used to record the number of power pulse occurrences within the standard start-up time. If the counter value is greater than zero, a power pulse is considered to have been detected.

[0043] The "Initiate Extended Observation Period if Power Pulse is Detected" mechanism is based on conditional judgment and process control using prior monitoring results. If a power pulse is already output within the standard startup time, this usually indicates a real electrical load. Initiating an extended observation period in this case is to further confirm and avoid false alarms, not to filter out spurious signals. For example, when at least one power pulse is detected within the standard startup time, the system state machine transitions from the "Standard Startup Time Monitoring" state to the "Extended Observation Period" state and begins executing the extended observation period logic. Alternatively, in the software program, a conditional statement can be used to call the subroutine to initiate the extended observation period or set the corresponding flag if the Boolean variable "Power pulse detected within the standard startup time" is true.

[0044] By employing the aforementioned technical solution, the system monitors power pulses within the standard startup time before initiating the extended observation period, and determines whether to activate the extended observation period based on the monitoring results. This application effectively optimizes the false start prevention process. Specifically, when the real-time power value exceeds the startup power threshold, the system first uses the established benchmark of the standard startup time to quickly determine whether a genuine power pulse output exists. If a power pulse is detected within this standard time, it indicates genuine electricity consumption. Initiating the extended observation period at this point further confirms and avoids misjudgments caused by momentary interference, while ensuring timely response to genuine small loads. This proactive rapid judgment mechanism avoids indiscriminately entering the extended observation period in all cases, thereby reducing unnecessary extended observation time and improving the response efficiency and accuracy of power metering. In this way, this application effectively prevents false starts while also avoiding the potential reduction in metering efficiency due to excessively extended observation periods.

[0045] In some embodiments, the extended observation period is 2-5 times the standard start-up time.

[0046] The extended observation period refers to the time interval during which the system continuously monitors the output of electrical energy pulses after the real-time power value exceeds the starting power threshold and the start-up is temporarily suspended. Its core function is to provide a buffer period to distinguish between actual power consumption behavior and transient interference signals.

[0047] By using the above technical solution, setting the extended observation period to 2-5 times, preferably 3 times, the standard startup time effectively solves the problem of incomplete filtering of false starts that may be caused by unoptimized extended observation periods. Specifically, this setting ensures that the observation period sufficiently covers the typical duration of common instantaneous interference signals, such as residual current in the line, electromagnetic interference, or brief power fluctuations caused by equipment standby power consumption, thus providing the system with sufficient time to determine whether these instantaneous power exceedances represent actual power consumption behavior. At the same time, limiting the duration to 2-5 times the standard startup time avoids delays in normal startup response caused by excessively long observation periods, ensuring timely measurement of real, small loads by the energy meter. Within this extended observation period, if no energy pulse output is detected, it can be more reliably determined as a false start and the cached energy can be cleared, thereby significantly improving the accuracy of energy measurement and effectively avoiding the accumulation of energy and measurement errors caused by non-electrical interference.

[0048] In some embodiments, the cached power is cached by establishing a temporary cache area to cache the power accumulated during the extended observation period.

[0049] Specifically, cached energy refers to the electrical energy monitored by the energy meter but not yet recorded in the main metering register when the real-time power value in the energy metering circuit exceeds the starting power threshold, and after the extended observation period. This energy is temporarily isolated pending the subsequent determination of false starts. It can be represented by the number of energy pulses or by a specific energy value calculated from the energy pulses. A temporary buffer is a dedicated storage space for storing this cached energy. This storage space can be a register within the processor, a specific address region in random access memory (RAM), or a reserved block in non-volatile memory (such as EEPROM). For example, a dedicated energy accumulation register can be set up to accumulate the number of energy pulses or the energy value during the extended observation period; or, a memory region can be allocated to store each monitored energy pulse event and its corresponding timestamp in the form of a queue or list. The technical feature of caching the energy accumulated during the extended observation period clarifies the scope and content of the temporary buffer. During the extended observation period, all electrical energy pulses continuously monitored by the electricity meter, or the electrical energy calculated from them, will be accumulated and stored in this temporary buffer area, rather than being directly entered into the main metering register. This means that from the start of the extended observation period until the end of the observation period and before a false start or valid start determination is made, all monitored electricity consumption is in a pending state and is managed by the temporary buffer area.

[0050] By establishing a temporary buffer to cache the accumulated electricity consumption during the extended observation period, this application effectively isolates the electricity consumption monitored during the extended observation period from the electricity consumption in the main metering register. When the system ultimately determines that a false start has occurred, the electricity consumption in the temporary buffer can be directly cleared, thereby avoiding the false increase in electricity consumption caused by the false start and ensuring the accuracy of metering. Conversely, if the system determines that the start is valid, the electricity consumption in the temporary buffer can be seamlessly transferred to the main metering register, ensuring that the electricity consumption from the start of actual power consumption can be accurately and completely measured, avoiding the omission of electricity consumption. This mechanism provides a flexible and accurate solution for handling electricity consumption in cases of false start determination without affecting the continuity of normal metering.

[0051] In some embodiments, if an energy pulse output is detected during the extended observation period, it is determined to be a valid start-up, and the cached energy is transferred to the main metering register.

[0052] Specifically, when the system continuously monitors the power pulse output during the extended observation period, this monitoring process is crucial for confirming the actual load startup. The power pulse output is the direct physical manifestation of actual power consumption in the power metering circuit. The monitoring module can be configured to continuously receive power pulse signals from the metering chip during the extended observation period and count the number of received pulses. Once the counter displays any pulse output, the condition is met, indicating actual power consumption. Alternatively, the processor can periodically query the pulse output status register of the metering chip or respond to pulse signals emitted by the metering chip via an interrupt mechanism. As long as at least one valid power pulse is detected during the extended observation period, the condition is considered met, thus providing a basis for subsequent startup determination.

[0053] Once a power pulse output is detected during the extended observation period, the system determines it as a valid start-up. This determination step is crucial for distinguishing between real power consumption and transient interference. After detecting the power pulse output, the processor sets an internal status flag, such as updating the "start-up status" from "delayed start-up" or "under observation" to "valid start-up," to indicate the nature of the current metering event. Alternatively, a dedicated start-up determination module can perform logical judgments based on the detected power pulse signal and notify other relevant modules, such as the power management module, of the judgment result (valid start-up) for subsequent power processing.

[0054] After a valid start is determined, the system transfers the cached power level to the main metering register. Cached power level refers to the power level temporarily cached when the real-time power value exceeds the start-up power threshold, as well as the power level accumulated during the extended observation period. The main metering register is the core data area used to store the final total power level counted in the user's account. After a valid start is determined, the processor performs a data transfer operation, reading the power level value stored in the temporary cache and adding it to the current total power level value stored in the main metering register. Alternatively, the temporary cache module can be designed to automatically send its internally accumulated power level data to the main metering module via the internal bus upon receiving a valid start command, and the main metering module is responsible for adding it to the main metering register.

[0055] Through the above technical solution, when the system detects actual power pulse output during the extended observation period, this indicates that there is indeed real load power consumption, rather than grid interference or instantaneous overload. At this time, the system can accurately determine it as a valid start-up, thus avoiding the misclassification and clearing of this real power consumption as a false start-up. Subsequently, the power previously cached due to delayed start-up is transferred to the main metering register in a timely and accurate manner, ensuring that all real power consumption from the initial start-up stage is fully included in the total metering, thereby improving the accuracy and reliability of power metering and avoiding losses for users or power suppliers.

[0056] In some embodiments, the standard start-up time is calculated according to the following formula:

[0057] .

[0058] Wherein, k—the number of pulses output per kilowatt-hour by the output device, in imp / kWh; M—the number of units; Unom—the nominal voltage, in V; Ist—the starting current, in A.

[0059] This invention provides a system for preventing erroneous starting of electricity metering, comprising:

[0060] The power monitoring module is used to monitor the real-time power value in the power metering circuit;

[0061] The temporary caching module is used to temporarily suspend startup and cache power when the real-time power value is greater than the startup power threshold.

[0062] The start-up determination module is used to start an extended observation period. During the extended observation period, the number of power pulses is monitored. If no power pulse output is detected, it is determined to be a false start and the cached power is cleared.

[0063] This invention provides an electricity meter, comprising:

[0064] Memory, used to store computer programs;

[0065] The steps of a processor to implement a method to prevent accidental startup when executing a program stored in memory.

[0066] This invention provides a converged terminal, comprising:

[0067] Memory, used to store computer programs;

[0068] The steps of a processor to implement a method to prevent accidental startup when executing a program stored in memory.

[0069] The convergence terminal is usually a concentrator that aggregates monitoring data from all electricity meters within the jurisdiction.

[0070] The present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for preventing accidental startup as described above.

[0071] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A method for preventing accidental starting, characterized in that, Includes the following steps: Monitor the real-time power value in the power metering circuit; When the real-time power value is greater than the starting power threshold, the start-up is temporarily suspended and the cached power is temporarily stored. Initiate an extended observation period and monitor the number of power pulses during the extended observation period. If no power pulse output is detected, it is determined to be a false start, and the cached power is cleared. Among them, the cached energy is the energy monitored by the energy meter but not yet included in the main metering register when the real-time power value in the energy metering circuit is greater than the starting power threshold, and after the extended observation period of startup.

2. The method for preventing accidental starting according to claim 1, characterized in that, Before initiating the extended observation period, monitor the power pulse within the standard startup time. If a power pulse is detected, initiate the extended observation period.

3. The method for preventing accidental starting according to claim 1, characterized in that, The extended observation period is 2-5 times the standard start-up time.

4. The method for preventing accidental starting according to claim 1, characterized in that, If an energy pulse output is detected during the extended observation period, it is determined to be a valid start-up, and the buffered energy is transferred to the main metering register.

5. The method for preventing accidental starting according to claim 1, characterized in that, The standard start-up time is calculated using the following formula: Where, k—the number of pulses output per kilowatt-hour by the output device, in imp / kWh; m—the number of units; Unom—the nominal voltage, in V; Ist—the starting current, in A.

6. A system for preventing erroneous starting of electricity metering, characterized in that, include: The power monitoring module is used to monitor the real-time power value in the power metering circuit; The temporary cache module is used to temporarily store cached power when the real-time power value is greater than the starting power threshold, thus suspending the start-up process. The start-up determination module is used to start an extended observation period. During the extended observation period, the number of power pulses is monitored. If no power pulse output is detected, it is determined to be a false start and the cached power is cleared. Among them, the cached energy is the energy monitored by the energy meter but not yet included in the main metering register when the real-time power value in the energy metering circuit is greater than the starting power threshold, and after the extended observation period of startup.

7. An electricity meter, characterized in that, include: Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the steps of the method according to any one of claims 1-5.

8. A converged terminal, characterized in that, include: Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the steps of the method according to any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-5.

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