CN115166350A - Method and device for calculating demand of electric energy meter - Google Patents

Abstract

The application relates to a method and a device for calculating demand of an electric energy meter. The method comprises the following steps: determining a slip time and a power sampling period; judging whether the power collected in the current power sampling period is smaller than the starting power or not within each slip time, if so, accumulating the electric energy accumulation time, otherwise, accumulating the current power sampling period to the previous electric energy accumulation time, and finally determining the electric energy accumulation time within each slip time to obtain the total electric energy accumulation time within the demand period; obtaining an electric energy pulse accumulated value in each slip time according to the pulse constant after frequency division, the electric energy accumulated time in each slip time and the current power, thereby obtaining a total electric energy pulse accumulated value in a demand period; and calculating to obtain the demand according to the total electric energy pulse accumulated value, the total electric energy accumulated time, the pulse constant and the frequency division number of the pulse constant. The method can effectively solve the problem that the load change cannot be accurately reflected, and achieves the beneficial effect of improving the demand calculation precision.

Description

Electric energy meter demand calculation method and device

technical field

The present application relates to the technical field of electric energy meters, and in particular, to a method, apparatus, computer equipment, storage medium and computer program product for calculating the demand of electric energy meters.

Background technique

With the increasing demand for electric vehicles, when many electric vehicles are connected to the power grid for charging, it will inevitably bring about great changes in the load of the power line. Ensure grid voltage stability and load balance. The load fluctuation value of large industrial users is very large, and the impact on the power grid is particularly serious. At present, the power sector implements a two-part electricity price for industrial, commercial and other users with a power transformer capacity of more than 100 kVA, and the two-part electricity price consists of two parts. The components are "basic electricity price" and "electricity electricity price". "Basic electricity price" is generally charged according to the transformer capacity, and can also be charged according to the monthly maximum demand; When the demand is used as a billing method, the realization and calculation method of the demand in the electric energy meter becomes as important as the electric energy metering.

Demand is a power measurement that refers to the average value of power in a specified demand period, and maximum demand refers to the maximum value of demand recorded in a specified billing period.

The existing demand calculation methods include the following:

1. Slip type. Obtain a power value P _i for each slip time t, i∈{1,...,n}, n>1, n is the number of slips; when the demand period T=n×t is reached for the first time , and perform demand calculation D=(P ₁ +...+P _n )/n. This method can only achieve the purpose of demand measurement simply and roughly. Once the user's electrical equipment is starting or the equipment is running abnormally within a certain slip period, the power value obtained at this time is the instantaneous peak value of the equipment, which is not actually generated. The energy will not have an impact on the power grid, so in this demand period at this time, the demand cannot accurately reflect the user's load; or once the user's electrical equipment is shut down during a certain slip period, the power value is changed. After it is obtained, it is a very small value or 0. In this demand period, the demand cannot accurately reflect the user's load.

2. An improved method for the above slip formula, in each slip time, instead of obtaining a power value as the calculation, the average power is calculated, and the average value is calculated as the P value of the calculated demand. This method can make some corrections to the disadvantages of method 1, but it only improves the accuracy of power acquisition to a limited extent, and cannot fundamentally solve the problem. 3 bytes of storage space, 60 per minute, 180 more storage spaces, because the demand is divided into forward active, reverse active, reactive 1 quadrant, reactive 2 quadrant, reactive 3 quadrant, no Four quadrants of power, split-phase active power, reactive power, etc., may need to add up to 4320 storage spaces. For the existing electric energy meter, the main control MCU chip needs to be re-selected, which increases the cost.

3. The electric energy accumulation method is adopted, and the electric energy accumulation value E is obtained at each slip time t. At this time, the power is P=E/t, and other calculation methods are the same as above. This method can completely avoid the problems of the above methods, but the problems it will bring are: 1) If only the existing 0.01kWh precision electric energy accumulated value is used as the calculated value or the electric energy precision accumulated value of 1 pulse is used , will inevitably bring errors, the former error is greater. Assuming that the pulse constant of the electric energy meter is 6400imp/kwh, the current power is 1kW, the accumulated value of electric energy in 1min is (6400/3600)*60=106.667 pulses, and the electric power is 0.0166kWh. When using the power calculation with 0.01kWh accuracy, the calculated value of 0.0066kWh of power is lost; when the pulse method is used, the calculated value of 0.667 pulses is lost. 2) If in a slip time t, there is power in the previous period, the electric energy is indeed accumulating, but there is no power in the later period, and there is no load at this time, but in the calculation P=E/t, t is still a complete The slip time is longer, resulting in a smaller P, which cannot accurately reflect the load.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a method, device, computer equipment, computer readable storage medium and computer program product for calculating the demand of an electric energy meter with improved calculation accuracy and more true and accurate reflection of load changes.

In a first aspect, the present application provides a method for calculating the demand of an electric energy meter. Methods include:

Determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

In the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power. If it is less than the starting power, the electric energy accumulation time is not accumulated; The current power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) in the i-th slip time t is determined, where i∈{1,...,n}, n>1;

Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period T=n×t;

According to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power, the electric energy pulse accumulation value D _t (i) in the i-th slip time t is calculated;

Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t;

The demand P in the demand period T is calculated according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division of the pulse constant in the demand period T.

In one of the embodiments, the calculated demand P in the demand period T is calculated according to the following formula:

P=( _{D T} /(C×k))/TE

Among them, C is the pulse constant, and k is the frequency division number of the pulse constant.

In one of the embodiments, the total electric energy accumulation time TE in the demand period _T is calculated according to the following formula:

In one of the embodiments, the total electric energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

In one of the embodiments, the method further includes: dividing the frequency of the pulse constant in the MCU of the electric energy meter.

In one of the embodiments, the frequency division number of the pulse constant is greater than or equal to 5.

In one of the embodiments, the slip time t≥1min.

In one of the embodiments, the demand period T≧5min.

In a second aspect, the present application also provides an electric energy meter demand calculation device. The device includes:

a period determination module, used to determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

The power judging module is used for judging whether the power collected in the current power sampling period t ₀ is less than the starting power within the i-th slip time t, if it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the described The current power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) within the i-th slip time t is determined, where i∈{1,...,n},n >1;

The electric energy accumulation time determining module is used to obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the ith slip time t, wherein the demand period T=n×t;

The electric energy pulse accumulation value calculation module is used to calculate the electric energy pulse in the i-th slip time t according to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power Accumulated value D _t (i), and obtain the total electric energy pulse accumulated value D _T in the demand period T according to the electric energy pulse accumulated value D _t (i) in the i-th slip time t;

The demand calculation module is used to calculate the demand P in the demand period T according to the total electric energy pulse accumulation value D _T , the total electric energy accumulation time T _E , the pulse constant and the frequency division number of the pulse constant in the demand period T .

In a third aspect, the present application also provides a computer device. The computer equipment includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for calculating the demand of an electric energy meter are implemented.

In a fourth aspect, the present application also provides a computer-readable storage medium. A computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, implements the steps of the above-mentioned method for calculating the demand of an electric energy meter.

In a fifth aspect, the present application also provides a computer program product. A computer program product includes a computer program that, when executed by a processor, implements the steps of the above method for calculating the demand of an electric energy meter.

The above electric energy meter demand calculation method, device, computer equipment, storage medium and computer program product can accurately accumulate the effective electric energy time by using power judgment, and divide the frequency of the pulse measurement method, so as to solve the problem that the load change cannot be accurately reflected , to achieve the beneficial effect of improving the accuracy of demand calculation.

Description of drawings

1 is a schematic flowchart of a method for calculating the demand of an electric energy meter in one embodiment;

Fig. 2 is a structural block diagram of an electric energy meter demand calculation device in one embodiment;

FIG. 3 is a diagram of the internal structure of a computer device in one embodiment.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

In one embodiment, as shown in FIG. 1 , a method for calculating the demand of an electric energy meter is provided. In this embodiment, the method is applied to a terminal for illustration. It can be understood that the method can also be applied to a server. It can be applied to a system including a terminal and a server, and is realized through the interaction of the terminal and the server. In this embodiment, the method includes the following steps:

Step 102, determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s.

For the power sampling period t ₀ , the smaller t ₀ is, the more accurate the power judgment is, and the more accurate the electric energy accumulation time is; the slip time must be greater than the power sampling period, optional, the slip time t≥1min.

Step 104, in the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power, if it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise; , accumulate the current power sampling period t ₀ to the previous electric energy accumulation time, and finally determine the electric energy accumulation time t _E (i) in the i-th slip time t, where i∈{1,...,n} , n>1.

Step 106: Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period T=n×t.

Optionally, the demand period T≥5min.

Optionally, the total electric energy accumulation time T _E in the demand period T is calculated according to the following formula:

Step 108, according to the pulse constant after frequency division, the electric energy accumulative time t _E (i (i) in the ith slip time t and the current power to obtain the electric energy pulse accumulative value D _t (i) in the i th slip time t .

Step 110: Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the ith slip time t.

Optionally, the total electric energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

Step 112: Calculate the demand P in the demand period T according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division number of the pulse constant in the demand period T.

Optionally, the demand P in the demand period T is calculated according to the following formula:

P=( _{D T} /(C×k))/TE

Among them, C is the pulse constant, and k is the frequency division number of the pulse constant.

Optionally, the method further includes: dividing the frequency of the pulse constant in the MCU of the electric energy meter.

Optionally, the frequency division number of the pulse constant is greater than or equal to 5.

Specifically, in this embodiment, the pulse constant C of the electric energy meter is 6400imp/kwh, the current equipment power is 1kW, the equipment startup instantaneous power is 8kW, and the peak power is 14kW (the instantaneous value is occasionally captured); set the slip time t is 1min, the power sampling period t ₀ is 1s, the demand period T is 15min; the pulse frequency division number k is 10.

Within 1min of each slip time, power is sampled every 1s for power judgment; in this embodiment, within 1min of the last slip time within 15min of the demand period, there is power in the first 30s and is greater than the starting power, and no power in the last 30s ; The remaining slip time has power and is greater than the starting power; it can be determined that within a demand period of 15min, the total electric energy accumulation time in the 1st to 14th slip time is 14min, and the 15th slip time is 14min. The electric energy accumulation time is 30s, that is, 0.5min, so the total electric energy accumulation time TE in the demand period of 15min is _14.5min .

According to the pulse constant after frequency division by 10, the electric energy accumulation time within 1min of each slip time and the current equipment power 1kW, it can be determined:

In the first 14 slip times, the cumulative value of electric energy pulses for each slip time 1min is (6400×10×1)/60=1066.67 pulses, where /60 is because 1min=1/60h, during the calculation process The time unit needs to be unified;

The cumulative value of the electric energy pulse for the 15th slip time of 1min is ((6400×10×1)/60)×0.5=533.35 pulses, where /60 is because 1min=1/60h, and the 15th slip time The accumulated time of electric energy within 1min is 0.5min, so it also needs ×0.5, and the time unit needs to be unified in the calculation process;

Therefore, in a demand period of 15min, the total electric energy pulse accumulated value D _T is 1066.67×14+533.35=15466.73 pulses.

According to the pulse constant C, the frequency division number k and the total electric energy pulse accumulated value D _T , it can be calculated that the electric quantity in a demand period of 15min in this embodiment is:

E _T =D _T /(C×k)=15466.73/(6400×10)kwh

Finally, according to the formula E _T /T _E , the demand P within a demand period of 15 minutes is calculated as:

P=E _T /T _E =(15466.73/(6400×10))/(14.5/60)=1.000kw

Among them, 14.5/60 is to convert 14.5min into hours to meet the unification of time units.

Based on the parameters of the above embodiment, if the existing calculation method mentioned in the background technology is adopted, it can be obtained:

Comparative Example 1

Using the slip equation of method 1 mentioned in the background art, the calculated demand D may be:

D=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/15=1kW;

D=(1+1+8+1+1+1+1+1+1+1+1+1+1+1+1)/15=1.466kW;

D=(1+1+14+1+1+1+1+1+1+1+1+1+1+1+1)/15=1.866kW;

D=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+0)/15=0.933kW;

D=(1+1+8+1+1+1+1+1+1+1+1+1+1+1+0)/15=1.400kW;

D=(1+1+14+1+1+1+1+1+1+1+1+1+1+1+0)/15=1.800kW.

Comparative Example 2

Using the method 2 mentioned in the background art, the calculated demand D may be:

D=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+1)/15=1kW;

D=(1+1+1.116+1+1+1+1+1+1+1+1+1+1+1+1)/15=1.007kW;

D=(1+1+1.216+1+1+1+1+1+1+1+1+1+1+1+1)/15=1.014kW;

D=(1+1+1+1+1+1+1+1+1+1+1+1+1+1+0.5)/15=0.966kW;

D=(1+1+1.116+1+1+1+1+1+1+1+1+1+1+1+0.5)/15=0.9744kW;

D=(1+1+1.216+1+1+1+1+1+1+1+1+1+1+1+0.5)/15=0.981kW.

Comparative Example 3

Using the method 3 electric energy accumulation method mentioned in the background art, the calculated demand D may be:

Taking the pulse counting method as an example, if the number of pulses is stored once per minute, then

D=((106*14+53)/6400)/(15/60)=0.96kW;

If the pulses are accumulated in 15 minutes, less than one pulse may be lost before and after this time. The main reason is that when the demand starts to calculate, there is no pulse at this time,

D=((105.667+106.667*13+53.335)/6400)/(15/60)=0.966kW.

To sum up, it can be seen that, compared with the existing demand calculation method, the demand calculation method of the present application can more accurately reflect the load change, and the calculation accuracy is also higher.

It should be understood that, although the steps in the flowcharts involved in the above embodiments are sequentially displayed according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order, and these steps may be performed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but may be executed at different times. The order of execution of these steps or stages is also not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages in the other steps.

Based on the same inventive concept, an embodiment of the present application also provides an electric energy meter demand calculation device for implementing the above-mentioned electric energy meter demand calculation method. The solution to the problem provided by the device is similar to the solution described in the above method, so the specific limitations in the embodiments of one or more electric energy meter demand calculation device provided below can refer to the above for electric energy meter demand The limitation of the quantity calculation method will not be repeated here.

In one embodiment, as shown in FIG. 2, a device for calculating the demand of an electric energy meter is provided, including:

a period determination module, used to determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

The power judgment module is used to judge whether the power collected in the current power sampling period t ₀ is less than the starting power within the i-th slip time t. If it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the current power The sampling period t ₀ is accumulated to the previous electric energy accumulation time, and the electric energy accumulation time t _E (i) in the i-th slip time t is finally determined, where i∈{1,...,n}, n>1 ;

The electric energy accumulation time determining module is used to obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the ith slip time t, wherein the demand period T=n×t;

The electric energy pulse accumulation value calculation module is used to calculate the electric energy pulse in the i-th slip time t according to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power Accumulated value D _t (i), and obtain the total electric energy pulse accumulated value D _T in the demand period T according to the electric energy pulse accumulated value D _t (i) in the i-th slip time t;

The demand calculation module is used to calculate the demand P in the demand period T according to the total electric energy pulse accumulation value D _T , the total electric energy accumulation time T _E , the pulse constant and the frequency division number of the pulse constant in the demand period T .

Each module in the above-mentioned electric energy meter demand calculation device can be implemented in whole or in part by software, hardware and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

In one embodiment, a computer device is provided, the computer device may be a server or a terminal, and its internal structure diagram may be as shown in FIG. 3 . The computer device includes a processor, memory, and a network interface connected by a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes non-volatile storage media and internal memory. The nonvolatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the execution of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store the obtained frozen data of the electric energy meter. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program, when executed by the processor, implements a data storage method for freezing an electric energy meter.

Those skilled in the art can understand that the structure shown in FIG. 3 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer equipment to which the solution of the present application is applied. Include more or fewer components than shown in the figures, or combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, including a memory and a processor, a computer program is stored in the memory, and the processor implements the following steps when executing the computer program:

Determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

In the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power. If it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the current The power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) in the i-th slip time t is determined, where i∈{1,...,n}, n>1;

Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period t=n×t;

According to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power, the electric energy pulse accumulation value D _t (i) in the i-th slip time t is calculated;

Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t;

The demand P in the demand period T is calculated according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division of the pulse constant in the demand period T.

In one embodiment, when the processor executes the computer program, it further implements:

The demand P in the demand period T is calculated according to the following formula:

P=( _{D T} /(C×k))/TE .

In one embodiment, when the processor executes the computer program, it further implements:

The total electric energy accumulation time TE in the demand period _T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The total energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The pulse constant is divided in the MCU of the energy meter.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

Determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

In the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power. If it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the current The power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) in the i-th slip time t is determined, where i∈{1,...,n}, n>1;

Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period T=n×t;

According to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power, the electric energy pulse accumulation value D _t (i) in the i-th slip time t is calculated;

Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t;

The demand P in the demand period T is calculated according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division of the pulse constant in the demand period T.

In one embodiment, when the processor executes the computer program, it further implements:

The demand P in the demand period T is calculated according to the following formula:

P=( _{D T} /(C×k))/TE .

In one embodiment, when the processor executes the computer program, it further implements:

The total electric energy accumulation time TE in the demand period _T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The total energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The pulse constant is divided in the MCU of the energy meter.

In one embodiment, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the following steps:

Determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s;

In the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power. If it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the current The power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) in the i-th slip time t is determined, where i∈{1,...,n}, n>1;

Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period T=n×t;

According to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power, the electric energy pulse accumulation value D _t (i) in the i-th slip time t is calculated;

Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t;

The demand P in the demand period T is calculated according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division of the pulse constant in the demand period T.

In one embodiment, when the processor executes the computer program, it further implements:

The demand P in the demand period T is calculated according to the following formula:

P=( _{D T} /(C×k))/TE .

In one embodiment, when the processor executes the computer program, it further implements:

The total electric energy accumulation time TE in the demand period _T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The total energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

In one embodiment, when the processor executes the computer program, it further implements:

The pulse constant is divided in the MCU of the energy meter.

It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all Information and data authorized by the user or fully authorized by the parties.

Those skilled in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium , when the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to a memory, a database or other media used in the various embodiments provided in this application may include at least one of a non-volatile memory and a volatile memory. Non-volatile memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random Memory) Access Memory, MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration and not limitation, the RAM may be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM). The database involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a blockchain-based distributed database, etc., but is not limited thereto. The processors involved in the various embodiments provided in this application may be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, data processing logic devices based on quantum computing, etc., and are not limited to this.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above examples only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the present application should be determined by the appended claims.

Claims (10)

1. A method for calculating the demand of an electric energy meter, wherein the method comprises: Determine the slip time t and the power sampling period t ₀ , and the power sampling period t ₀ ≤ 1s; In the i-th slip time t, the initial electric energy accumulation time is 0, and it is judged whether the power collected in the current power sampling period t ₀ is less than the starting power. If it is less than the starting power, the electric energy accumulation time is not accumulated; The current power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) in the i-th slip time t is determined, where i∈{1,...,n }, n>1; Obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, where the demand period T=n×t; According to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i-th slip time t and the current power, the electric energy pulse accumulation value D _t (i) in the i-th slip time t is obtained by calculating ; Obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t; The demand P in the demand period T is calculated according to the total electric energy pulse accumulation value _{D T} , the total electric energy accumulation time TE , the pulse constant and the frequency division number of the pulse constant in the demand period T. 2. method according to claim 1, is characterized in that, the demand P in described demand period T that described calculation obtains is calculated according to following formula: P=( _{D T} /(C×k))/TE Among them, C is the pulse constant, and k is the frequency division number of the pulse constant. 3. The method according to claim 1, wherein the total electric energy accumulation time TE in the demand period _T is calculated according to the following formula:

4. The method according to claim 1, wherein the total electric energy pulse accumulated value D _T in the demand period T is calculated according to the following formula:

5. The method according to claim 1, wherein the method further comprises: The pulse constant is divided in the MCU of the energy meter. 6 . The method according to claim 1 , wherein the frequency division number of the pulse constant is greater than or equal to 5. 7 . 7. The method according to claim 1, wherein the slip time t≥1min. 8. The method according to claim 1, wherein the demand period T≥5min. 9. An electric energy meter demand calculation device, wherein the device comprises: a period determination module, configured to determine the slip time t and the power sampling period t ₀ , the power sampling period t ₀ ≤ 1s; The power judging module is used for judging whether the power collected in the current power sampling period t ₀ is less than the starting power within the i-th slip time t, if it is less than the starting power, the electric energy accumulation time is not accumulated; otherwise, the described The current power sampling period t ₀ is accumulated to the previous electric energy accumulation time, and finally the electric energy accumulation time t _E (i) within the i-th slip time t is determined, where i∈{1,...,n} , n>1; an electric energy accumulation time determining module, configured to obtain the total electric energy accumulation time TE in the demand period _T according to the electric energy accumulation time t _E (i) in the i-th slip time t, wherein the demand period T=n× t; The electric energy pulse accumulation value calculation module is used to calculate the electric energy in the ith slip time t according to the pulse constant after frequency division, the electric energy accumulation time t _E (i) in the i th slip time t and the current power. electric energy pulse accumulation value D _t (i), and obtain the total electric energy pulse accumulation value D _T in the demand period T according to the electric energy pulse accumulation value D _t (i) in the i-th slip time t; The demand calculation module is used for calculating the demand period T according to the total electric energy pulse accumulation value D _T , the total electric energy accumulation time T _E , the pulse constant and the frequency division number of the pulse constant in the demand period T the demand P. 10. A computer device, comprising a memory and a processor, wherein the memory stores a computer program, wherein the processor implements the method according to any one of claims 1 to 8 when the processor executes the computer program. step.

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