CN116338302A - Electric energy metering method and device, electronic equipment and medium - Google Patents
Electric energy metering method and device, electronic equipment and medium Download PDFInfo
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Abstract
The application is applicable to the technical field of electric power, and provides an electric energy metering method, an electric energy metering device, electronic equipment and a medium. The method comprises the following steps: acquiring the instantaneous power of a power grid; performing power integration processing on the instantaneous power through at least two groups of parallel power integrators to respectively obtain electric energy accumulation results corresponding to each group of power integrators; wherein, the power integration modes executed by at least two groups of parallel power integrators are not identical; and respectively calculating to obtain the electric energy metering result corresponding to each group of power integrators according to the electric energy accumulation result corresponding to each group of power integrators. According to the electric energy metering method, according to the electric energy metering requirement in practical application, the electric energy metering result corresponding to the power integrator with the non-identical power integration mode can be obtained, and the comprehensiveness and applicability of the electric energy metering method are improved.
Description
Technical Field
The application belongs to the technical field of electric power, and particularly relates to an electric energy metering method, an electric energy metering device, electronic equipment and a medium.
Background
In the conventional electric energy metering method, the instantaneous power of the power grid is generally obtained first, the instantaneous power is subjected to power integration processing by a power integrator with preset power integration modes (such as an absolute value integration mode, an algebraic sum integration mode, a forward integration mode, a reverse integration mode and the like), an electric energy accumulation result is obtained, and then the electric energy metering result is obtained according to the electric energy accumulation result.
Because various power integration modes have respective limitations, the instantaneous power is subjected to power integration processing by only one power integrator with a preset power integration mode, and only the electric energy metering result corresponding to the power integrator can be obtained. The power integrator which is in the forward integration mode can only obtain the metering result of the forward electric energy, but cannot obtain the metering result of the reverse electric energy, the metering result of the absolute electric energy and the metering result of algebraic sum electric energy, so that the obtained metering result of the electric energy cannot meet different electric energy metering demands, and the existing metering method of the electric energy is low in comprehensiveness and applicability.
Disclosure of Invention
In view of this, the embodiments of the present application provide an electric energy metering method, an apparatus, an electronic device, and a medium, so as to solve the technical problems of low comprehensiveness and applicability of the existing electric energy metering method.
In a first aspect, an embodiment of the present application provides a method for measuring electric energy, including:
acquiring the instantaneous power of a power grid;
performing power integration processing on the instantaneous power through at least two groups of parallel power integrators to respectively obtain electric energy accumulation results corresponding to each group of power integrators; wherein the power integration modes executed by the at least two groups of parallel power integrators are not identical;
And respectively calculating to obtain the electric energy metering result corresponding to each group of the power integrators according to the electric energy accumulation result corresponding to each group of the power integrators.
Optionally, the power integration mode of any one of the at least two sets of parallel power integrators is determined by the following steps:
acquiring the numerical value of an integration mode register corresponding to any group of power integrators;
and determining the power integration mode of any group of power integrators according to the numerical value.
Optionally, the determining the power integration mode of the any group of power integrators according to the numerical value includes:
if the numerical value is a first numerical value, determining that the power integration mode of any group of power integrators is an absolute value integration mode;
if the numerical value is a second numerical value, determining that the power integration mode of any group of power integrators is algebraic sum integration mode;
if the value is a third value, determining that the power integration mode of any group of power integrators is a forward integration mode;
and if the numerical value is a fourth numerical value, determining that the power integration mode of any group of power integrators is a reverse integration mode.
Optionally, if the power integration mode of the any one group of power integrators is an absolute value integration mode, performing power integration processing on the instantaneous power through the any one group of power integrators includes:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
for each time period, calculating the integral of the absolute value of the instantaneous power in the time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
Optionally, if the power integration mode of the any one group of power integrators is algebraic sum integration mode, performing power integration processing on the instantaneous power through the any one group of power integrators, including:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
Optionally, if the power integration mode of the any one group of power integrators is a forward integration mode, performing power integration processing on the instantaneous power through the any one group of power integrators includes:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the forward instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
Optionally, if the power integration mode of the any one group of power integrators is a reverse integration mode, performing power integration processing on the instantaneous power through the any one group of power integrators includes:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the reverse instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
In a second aspect, embodiments of the present application provide an electric energy metering device, including:
the power acquisition unit is used for acquiring the instantaneous power of the power grid;
the power integration unit is used for performing power integration processing on the instantaneous power through at least two groups of parallel power integrators to respectively obtain electric energy accumulation results corresponding to each group of power integrators; wherein the power integration modes executed by the at least two groups of parallel power integrators are not identical;
and the electric energy metering unit is used for respectively calculating the electric energy metering result corresponding to each group of the power integrators according to the electric energy accumulation result corresponding to each group of the power integrators.
In a third aspect, embodiments of the present application provide an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for metering electrical energy according to any one of the first aspects, when the computer program is executed by the processor.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the electrical energy metering method according to any of the first aspects described above.
In a fifth aspect, embodiments of the present application provide a computer program product which, when run on a terminal device, causes the terminal device to perform the steps of the electrical energy metering method according to any of the first aspects above.
The embodiment of the application provides an electric energy metering method, an electric energy metering device, electronic equipment and a medium, wherein the electric energy metering method, the electric energy metering device, the electronic equipment and the medium have the following steps
The beneficial effects are that:
according to the electric energy metering method, the instantaneous power of the power grid is obtained, the instantaneous power is subjected to power integration processing through at least two groups of parallel power integrators, electric energy accumulation results corresponding to the power integrators in each group are obtained respectively, and then the electric energy metering results corresponding to the power integrators in each group are calculated according to the electric energy accumulation results corresponding to the power integrators in each group. Because the power integration modes executed by at least two groups of parallel power integrators are not completely the same, the electric energy metering results corresponding to the power integrators with different power integration modes can be obtained simultaneously, thereby meeting different electric energy metering demands in practical application and improving the comprehensiveness and applicability of the electric energy metering method.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an implementation of an electric energy metering method according to an embodiment of the present application;
FIG. 2 is a flowchart of an implementation of a power integration method of determining a power integrator according to a numerical value according to an embodiment of the present application;
fig. 3 is a flowchart of an implementation of power integration processing for instantaneous power by a power integrator according to an embodiment of the present application;
FIG. 4 is a flowchart of another implementation of power integration processing of instantaneous power by a power integrator according to an embodiment of the present disclosure;
FIG. 5 is a flowchart of another implementation of power integration processing of instantaneous power by a power integrator according to an embodiment of the present disclosure;
FIG. 6 is a flowchart of another implementation of power integration processing of instantaneous power by a power integrator according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electric energy metering device according to an embodiment of the present application
FIG. 8 is a schematic structural diagram of another electric energy metering device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
It is noted that the terminology used in the embodiments of the present application is used for the purpose of explaining specific embodiments of the present application only and is not intended to limit the present application. In the description of the embodiments of the present application, unless otherwise indicated, "a plurality" means two or more, and "at least one", "one or more" means one, two or more. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a definition of "a first", "a second" feature may explicitly or implicitly include one or more of such features.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
The execution subject of the electric energy metering method provided by the embodiment of the application may be an electronic device. The electronic device may be included in a mobile phone, a tablet computer, a notebook computer, a desktop computer, an electric energy metering device, and the like.
The electric energy metering method provided by the embodiment of the application can be used for obtaining the electric energy metering results corresponding to the power integrators with different power integration modes, so that different electric energy metering requirements are met. The power integration method may include, but is not limited to, an absolute value integration method, an algebraic sum integration method, a forward integration method, and a backward integration method.
In the conventional electric energy metering method, the instantaneous power is generally subjected to power integration processing by a power integrator with a preset power integration mode, so that only the electric energy metering result corresponding to the power integrator can be obtained. Because various power integration modes have respective limitations, such as an absolute value integration mode cannot distinguish electric energy reversals, and therefore, the requirement of bidirectional metering cannot be met; the algebraic and integral modes lose energy, so that the requirement of accurate metering cannot be met; the forward integration mode can only obtain forward electric energy, and cannot obtain reverse electric energy, so that the requirement of bidirectional metering cannot be met; the reverse integration mode can only obtain reverse electric energy, and cannot obtain forward electric energy, so that the requirement of bidirectional metering cannot be met, and the electric energy metering result obtained by only one power integrator with a preset power integration mode cannot meet different electric energy metering requirements, for example, the power integrator with the power integration mode being the forward integration mode can only obtain the metering result of forward electric energy, and cannot obtain the metering result of reverse electric energy, the metering result of absolute electric energy and the metering result of algebraic sum electric energy; only the power integrator which adopts the power integration mode as the reverse integration mode can only obtain the metering result of the reverse electric energy, but cannot obtain the metering result of the forward electric energy, the metering result of the absolute electric energy, the metering result of algebraic sum electric energy and the like. Therefore, it can be seen that the electric energy metering result obtained by the traditional electric energy metering method cannot meet different electric energy metering requirements, so that the existing electric energy metering method is low in comprehensiveness and applicability.
When users have different requirements in electric energy metering, the steps of the electric energy metering method provided by the embodiment of the application can be executed through the electronic equipment, so that different electric energy metering requirements can be met, and the comprehensiveness and the applicability of the electric energy metering method are improved. For example, if the user wants to obtain the forward electric energy and the reverse electric energy at the same time, a group of power integrators with a power integration mode being the forward integration mode and a group of power integrators with a power integration mode being the reverse integration mode may be preset, so as to obtain an electric energy metering result corresponding to the power integrator with the integration mode being the forward integration mode and an electric energy metering result corresponding to the power integrator with the integration mode being the reverse integration mode respectively, so that the forward electric energy and the reverse electric energy can be obtained at the same time; for example, if the user wants to obtain the forward electric energy, the reverse electric energy and the absolute value electric energy at the same time, a group of power integrators with power integration modes of the forward electric energy, a group of power integrators with power integration modes of the reverse electric energy and a group of power integrators with power integration modes of the absolute value electric energy may be preset, so as to obtain the electric energy metering result corresponding to the power integrator with the integration mode of the forward electric energy, the electric energy metering result corresponding to the power integrator with the integration mode of the reverse electric energy and the electric energy metering result corresponding to the power integrator with the integration mode of the absolute value electric energy respectively, and further obtain the forward electric energy, the reverse electric energy and the absolute value electric energy at the same time.
Referring to fig. 1, fig. 1 is a flowchart illustrating an implementation of an electric energy metering method according to an embodiment of the present application, where the electric energy metering method may include S101 to S103, which are described in detail as follows:
in S101, the instantaneous power of the grid is obtained.
In the embodiment of the application, the electronic device can sample the instantaneous current and the instantaneous voltage from the power grid in real time at a preset frequency, and after the electronic device samples the instantaneous current and the instantaneous voltage corresponding to each time period, multiplication operation can be performed on the instantaneous current and the instantaneous voltage through a preset multiplier to obtain the instantaneous power corresponding to each time period. The preset frequency may be set according to actual requirements, which is not limited herein. The duration of each time period may be determined according to a preset frequency, and illustratively, the duration of each time period may be a result of dividing 1 by the preset frequency.
In the embodiment of the application, the preset frequency can be set to a value larger than the frequency threshold, so that the electronic equipment can acquire the instantaneous power of the power grid at a high frequency.
In S102, power integration processing is performed on the instantaneous power by at least two groups of parallel power integrators, so as to obtain respective corresponding electric energy accumulation results of each group of power integrators.
Wherein, the power integration modes executed by at least two groups of parallel power integrators are not identical.
In the embodiment of the present application, the power integration mode performed by the power integrator may include, but is not limited to, an absolute value integration mode, an algebraic sum integration mode, a forward integration mode, and a backward integration mode. The number of the power integrators and the power integration mode executed by each group of the power integrators can be preset according to actual requirements, and are not limited herein. By way of example, the number of power integrators may be 3 groups, and the power integration manners performed by the power integrators of each group may be a forward integration manner, a backward integration manner, and an absolute value integration manner, respectively. Of course, the power integration manners performed by the power integrators of each group may be various permutations of various power integration manners.
After the number of the power integrators and the power integration mode executed by each group of the power integrators are set, the electronic equipment can perform power integration processing on the instantaneous power of each group of time periods through each set of the power integrators, so as to obtain the respective corresponding electric energy accumulation result of each group of the power integrators.
In one possible implementation, the power integration manner of any one of the at least two sets of parallel power integrators may be determined by the following steps a and b:
In the step a, the numerical value of an integration mode register corresponding to any group of power integrators is obtained;
in this implementation, an integration mode register corresponding to the power integrator may be provided in the electronic device, based on which the user may change the power integration mode performed by the power integrator by changing the value in the integration mode register. After the user determines the power integration mode executed by the power integrator, the electronic device may acquire the values of the integration mode registers corresponding to any group of power integrators.
In step b, the power integration mode of any group of power integrators is determined according to the numerical value.
In this implementation manner, after the electronic device obtains the value of the integration mode register corresponding to any group of power integrators, the power integration mode of any group of power integrators may be determined according to the value. Alternatively, the first value may correspond to an absolute value integration manner; the second value may correspond to algebraic and integral means; the third value may correspond to a forward integration mode; the fourth value may correspond to a reverse integration mode. Based on this, the power integration method of any one group of power integrators can be determined from the values by S201 to S204 shown in fig. 2. Fig. 2 is a flowchart of an implementation of a power integration method for determining any group of power integrators according to a numerical value according to an embodiment of the present application.
In S201, if the value is the first value, it is determined that the power integration method of any one group of power integrators is an absolute value integration method.
For example, the first value may be 00, based on which, when the electronic device obtains a value of 00 in the integration mode register corresponding to any group of power integrators, the electronic device may determine that the power integration mode of the power integrator is an absolute value integration mode.
In S202, if the value is the second value, it is determined that the power integration mode of any one group of power integrators is algebraic sum integration mode.
For example, the second value may be 01, based on which, when the electronic device obtains a value of 01 in the integration mode register corresponding to any group of power integrators, the electronic device may determine that the power integration mode of the power integrator is algebraic and integration modes.
In S203, if the value is the third value, it is determined that the power integration mode of any one of the power integrators is the forward integration mode.
For example, the third value may be 10, based on which, when the electronic device obtains that the value of the integration mode register corresponding to any group of power integrators is 10, the electronic device may determine that the power integration mode of the power integrator is a forward integration mode.
In S204, if the value is the fourth value, it is determined that the power integration mode of any one of the power integrators is the inverse integration mode.
For example, the fourth value may be 11, based on which, when the electronic device obtains the value of the integration mode register corresponding to any group of the power integrators to be 11, the electronic device may determine that the power integration mode of the power integrator is a directional integration mode.
In the embodiment of the present application, if the electronic device determines that the power integration manner of any one group of power integrators is the absolute value integration manner, the step of performing the power integration processing on the instantaneous power by the any one group of power integrators may be implemented as shown in S301 to S303 in fig. 3. Fig. 3 is a flowchart of an implementation of power integration processing for instantaneous power by using any one set of power integrators according to an embodiment of the present application.
In S301, the respective instantaneous powers of the respective time periods included in the preset time period are acquired.
The electronic device may obtain the respective instantaneous power corresponding to each time period included in the preset time period. The preset time period may be set according to actual requirements, which is not limited herein. For example, one preset time period may include a first time period, a second time period, a third time period, … …, and an nth time period. The electronic device may obtain the instantaneous power spl_p1 corresponding to the first time period, obtain the instantaneous power spl_p2 corresponding to the second time period, obtain the instantaneous power spl_p3 corresponding to the third time period, and so on, obtain the instantaneous power spl_pn corresponding to the nth time period. It should be noted that, in the embodiment of the present application, the electronic device may obtain the instantaneous voltage of the power grid at a high frequency, so the corresponding instantaneous power in each time period may be changed.
In S302, for each time period, the integral of the absolute value of the instantaneous power in that time period is calculated, resulting in the accumulated value of the electric energy for that time period.
The electronic device may calculate, for each time period within a preset time period, an integral of an absolute value of the instantaneous power within the time period, thereby obtaining an electric energy accumulated value of the time period.
For example, the first period may be denoted as Δt1, the second period may be denoted as Δt2, the third period may be denoted as Δt3, and so on, the nth period may be denoted as Δtn. For a first time period, the electronic device may calculate an integral of an absolute value of the instantaneous power spl_p1 corresponding to the first time period Δt1 within the first time period Δt1, to obtain an electric energy accumulated value |spl_p1Δt1| of the first time period; for a second time period, the electronic device may calculate an integral of an absolute value of the instantaneous power spl_p2 corresponding to the second time period Δt2 within the second time period Δt2, to obtain an electric energy accumulated value |spl_p2Δt2| of the second time period; for the third time period, the electronic device may calculate the integral of the absolute value of the instantaneous power spl_p3 corresponding to the third time period Δt3, to obtain the electric energy accumulated value |spl_p3Δt3| of the third time period, so as to push the integral, for the nth time period, the electronic device may calculate the integral of the absolute value of the instantaneous power spl_pn corresponding to the nth time period, to obtain the electric energy accumulated value |spl_pn Δtn| of the nth time period.
In S303, the power accumulation values corresponding to the respective time periods are added to obtain a power accumulation result corresponding to any one group of power integrators.
After obtaining the electric energy accumulation values of each time period, the electronic equipment can add the electric energy accumulation values corresponding to each time period to obtain an electric energy accumulation result corresponding to any group of power integrators. For example, after obtaining the electric energy accumulation value |spl_p1Δt1| in the first period, the electric energy accumulation value |spl_p2Δt2| in the second period, the electric energy accumulation value |spl_p3Δt3| in the third period, … …, and the electric energy accumulation value |spl_pnΔtn| in the nth period, the electronic device may add the electric energy accumulation values corresponding to the respective periods to obtain the electric energy accumulation results corresponding to any one group of power integrators, i.e
And Spl_P1Δt1|Spl_P2Δt2|Spl_P3Δt3|+ … … |Spl_PnΔtn| as the power accumulation result for any one power integrator.
In the embodiment of the present application, if the electronic device determines that the power integration mode of any one group of power integrators is algebraic and integral, the step of performing power integration processing on the instantaneous power by any one group of power integrators may be implemented through S301 to S402 as shown in fig. 4. Fig. 4 is a flowchart of another implementation of power integration processing of instantaneous power by any set of power integrators according to an embodiment of the present application.
In S301, the respective instantaneous powers of the respective time periods included in the preset time period are acquired.
Specific steps may be described with reference to the corresponding embodiment of fig. 3, which is not described herein.
In S401, for each time period, the integral of the instantaneous power in the time period is calculated, resulting in an accumulated value of the electric energy for the time period.
The electronic device may calculate, for each time period within a preset time period, an integral of the instantaneous power within the time period, thereby obtaining an accumulated value of the electric energy for the time period.
For example, the first period may be denoted as Δt1, the second period may be denoted as Δt2, the third period may be denoted as Δt3, and so on, the nth period may be denoted as Δtn. For a first time period, the electronic device may calculate an integral of the instantaneous power spl_p1 corresponding to the first time period Δt1 in the first time period Δt1, to obtain an electric energy accumulated value spl_p1Δt1 of the first time period; for a second time period, the electronic device may calculate an integral of the instantaneous power spl_p2 corresponding to the second time period Δt2 within the second time period Δt2, to obtain an electric energy accumulated value spl_p2Δt2 of the second time period; for the third time period, the electronic device may calculate the integral of the instantaneous power spl_p3 corresponding to the third time period Δt3, to obtain the electric energy accumulated value spl_p3Δt3 of the third time period, and for the nth time period, the electronic device may calculate the integral of the instantaneous power spl_pn corresponding to the nth time period, to obtain the electric energy accumulated value spl_pnΔtn of the nth time period.
In S402, the power accumulation values corresponding to the respective time periods are added to obtain a power accumulation result corresponding to any one group of power integrators.
After obtaining the electric energy accumulation values of each time period, the electronic equipment can add the electric energy accumulation values corresponding to each time period to obtain an electric energy accumulation result corresponding to any group of power integrators. For example, after obtaining the electric energy accumulation value spl_p1Δt1 in the first time period, the electric energy accumulation value spl_p2Δt2 in the second time period, the electric energy accumulation value spl_p3Δt3 in the third time period, … … in the nth time period, the electronic device may add the electric energy accumulation values corresponding to the respective time periods to obtain the electric energy accumulation results corresponding to any group of power integrators, i.e
Spl_P1Δt1+Spl_P2Δt2+Spl_P3Δt3+ … … Spl_PnΔtn as a result of accumulating power corresponding to any one group of power integrators.
In this embodiment of the present application, if the electronic device determines that the power integration mode of any one group of power integrators is the forward integration mode, the step of performing the power integration process on the instantaneous power by the any one group of power integrators may be implemented through S301 to S502 as shown in fig. 5. Fig. 5 is a flowchart of still another implementation of power integration processing of instantaneous power by any set of power integrators according to an embodiment of the present application.
In S301, the respective instantaneous powers of the respective time periods included in the preset time period are acquired.
Specific steps may be described with reference to the corresponding embodiment of fig. 3, which is not described herein.
In S501, for each time period, the integral of the forward instantaneous power in that time period is calculated, resulting in an accumulated value of the electric energy for that time period.
The electronic device may calculate, for each time period within a preset time period, an integral of the forward instantaneous power within the time period, thereby obtaining an electric energy accumulated value for the time period.
In the embodiment of the application, the instantaneous power when the power grid outputs power can be used as the forward instantaneous power.
The period of time in which the instantaneous power is the forward instantaneous power in the first period of time may be expressed as Δt1 + The period of time in which the instantaneous power is the forward instantaneous power in the second period of time may be expressed as Δt2 + The period of time in which the instantaneous power is the forward instantaneous power in the third period of time may be expressed asΔt3 + Similarly, the period in which the instantaneous power is the forward instantaneous power in the nth period may be expressed as Δtn + . For the first time period, the electronic device may calculate the integral of the forward instantaneous power spl_p1 corresponding to the first time period Δt1 within the first time period Δt1 to obtain the electric energy accumulated value spl_p1Δt1 of the first time period + The method comprises the steps of carrying out a first treatment on the surface of the For the second time period, the electronic device may calculate the integral of the forward instantaneous power spl_p2 corresponding to the second time period Δt2 within the second time period Δt2 to obtain the electric energy accumulated value spl_p2Δt2 of the second time period + The method comprises the steps of carrying out a first treatment on the surface of the For a third time period, the electronic device may calculate an integral of the forward instantaneous power spl_p3 corresponding to the third time period Δt3 within the third time period Δt3, to obtain an electric energy accumulated value spl_p3Δt3 of the third time period + With such a push, for the nth time period, the electronic device can calculate the integral of the forward instantaneous power spl_pn corresponding to the nth time period in the nth time period Δtn to obtain the electric energy accumulated value spl_pn Δtn of the nth time period + 。
In S502, the electric energy accumulated values corresponding to the time periods are added to obtain an electric energy accumulated result corresponding to any group of power integrators.
After obtaining the electric energy accumulation values of each time period, the electronic equipment can add the electric energy accumulation values corresponding to each time period to obtain an electric energy accumulation result corresponding to any group of power integrators. The electronic device obtains the electric energy accumulation value Spl_P1Δt1 of the first time period + Electric energy accumulated value Spl_P2Δt2 in second time period + Electric energy integrated value Spl_P3Δt3 in third time period + … …, the accumulated electric energy value Spl_PnΔtn of the nth time period + Then, the electric energy accumulated values corresponding to the time periods can be added to obtain the electric energy accumulated result corresponding to any group of power integrators, namely
Spl_P1Δt1 + +Spl_P2Δt2 + +Spl_P3Δt3 + +……Spl_PnΔtn + And obtaining the electric energy accumulation result corresponding to any group of power integrators.
In this embodiment of the present application, if the electronic device determines that the power integration mode of any one group of power integrators is the reverse integration mode, the step of performing the power integration process on the instantaneous power by any one group of power integrators may be implemented through S301 to S602 as shown in fig. 6. Fig. 6 is a flowchart of still another implementation of power integration processing of instantaneous power by any set of power integrators according to an embodiment of the present application.
In S301, the respective instantaneous powers of the respective time periods included in the preset time period are acquired.
Specific steps may be described with reference to the corresponding embodiment of fig. 3, which is not described herein.
In S601, for each time period, the integral of the instantaneous power in the reverse direction in the time period is calculated, and the electric energy integrated value of the time period is obtained.
The electronic device may calculate, for each time period within a preset time period, an integral of the instantaneous power of the reverse direction within the time period, thereby obtaining an accumulated value of the electric energy of the time period.
In the embodiment of the application, the instantaneous power when the power grid inputs power can be used as the reverse instantaneous power.
The period of time in which the instantaneous power is the reverse instantaneous power in the first period of time may be expressed as Δt1 — The period of time in which the instantaneous power is the reverse instantaneous power in the second period of time may be expressed as Δt2 — The period in which the instantaneous power is the reverse instantaneous power in the third period may be expressed as Δt3 — Similarly, the period in which the instantaneous power is the reverse instantaneous power in the nth period may be expressed as Δtn — . For the first period, the electronic device may calculate the integral of the reverse instantaneous power spl_p1 corresponding to the first period Δt1 during the first period Δt1 to obtain the electric energy accumulated value spl_p1Δt1 of the first period — The method comprises the steps of carrying out a first treatment on the surface of the For the second time period, the electronic device may calculate the integral of the reverse instantaneous power spl_p2 corresponding to the second time period Δt2 within the second time period Δt2 to obtain the electric energy accumulated value spl_p2Δt2 of the second time period — The method comprises the steps of carrying out a first treatment on the surface of the For a third time period, the electronic device may calculate that the third time period Δt3 corresponds to the third time period Δt3Is integrated with the reverse instantaneous power Spl_P3 to obtain the electric energy accumulated value Spl_P3Deltat 3 of the third time period — With such a push, for the nth time period, the electronic device can calculate the integral of the reverse instantaneous power spl_pn corresponding to the nth time period in the nth time period Δtn to obtain the electric energy accumulated value spl_pn Δtn of the nth time period — 。
In S602, the power accumulation values corresponding to the respective time periods are added to obtain a power accumulation result corresponding to any one group of power integrators.
After obtaining the electric energy accumulation values of each time period, the electronic equipment can add the electric energy accumulation values corresponding to each time period to obtain an electric energy accumulation result corresponding to any group of power integrators. The electronic device obtains the electric energy accumulation value Spl_P1Δt1 of the first time period — Electric energy accumulated value Spl_P2Δt2 in second time period — Electric energy integrated value Spl_P3Δt3 in third time period — … …, the accumulated electric energy value Spl_PnΔtn of the nth time period — Then, the electric energy accumulated values corresponding to the time periods can be added to obtain the electric energy accumulated result corresponding to any group of power integrators, namely
Spl_P1Δt1 — +Spl_P2Δt2 — +Spl_P3Δt3 — +……Spl_PnΔtn — And obtaining the electric energy accumulation result corresponding to any group of power integrators.
In S103, according to the respective power accumulation results of each group of power integrators, the respective power measurement results of each group of power integrators are calculated.
In the embodiment of the application, after obtaining the electric energy accumulation results corresponding to each group of power integrators, the electronic device may calculate to obtain the electric energy metering results corresponding to each group of power integrators. Specifically, for each group of power integrators, the power integration result obtained by the power integrator may be integrated into a fast pulse counter.
After the accumulated power accumulation result of the fast pulse counter reaches the power with a pulse constant, the fast pulse counter can control the power register to accumulate a unit of power, and the fast pulse counter can also control the power register to output a power pulse.
The pulse constants of the fast pulse counters corresponding to the power integrators can be set according to actual requirements.
For better understanding of the technical effects brought about by the present application, examples of practical applications are given below with respect to the respective embodiments corresponding to fig. 1 to 6.
By way of example, three groups of power integrators can be connected in parallel, the power integration modes of the three groups of power integrators can be respectively a forward integration mode, a reverse integration mode and an absolute value integration mode, and the metering result of forward electric energy, the metering result of reverse electric energy and the metering result of absolute value electric energy can be obtained through the steps in the embodiments corresponding to fig. 1 to 6, so that the great problem that the conventional electric energy integration unit cannot deal with frequent forward and reverse switching when using algebraic sum modes is solved, and accurate bidirectional metering is realized.
Of course, the number of the power integrators and the integration mode of each power integrator may be set according to the actual application, so as to obtain the desired effect, which is not described herein.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an electric energy metering device according to an embodiment of the present application. As shown in fig. 7, the power metering device may include a multiplier 71, a first power integrator 72, a second power integrator 73, a third power integrator 74, a first fast pulse counter 75, a second fast pulse counter 76, a third fast pulse counter 77, a first power register 78, a second power register 79, and a third power register 710.
The multiplier 71 is used for acquiring the instantaneous current and the instantaneous voltage of the power grid, and obtaining the instantaneous power according to the instantaneous current and the instantaneous voltage of the power grid. The first power integrator 72, the second power integrator 73 and the third power integrator 74 may respectively obtain the power accumulation results corresponding to the first power integrator 72, the second power integrator 73 and the third power integrator 74 in a forward integration manner, a backward integration manner and an absolute value integration manner. Illustratively, the instantaneous power may be integrated in a forward integration manner by the first power integrator 72, in a backward integration manner by the second power integrator 73, and in an absolute integration manner by the third power integrator 74. The first power integrator 72 may accumulate the power accumulation result in the first fast pulse counter 75, the second power integrator 73 may accumulate the power accumulation result in the second fast pulse counter 76, and the third power integrator 74 may accumulate the power accumulation result in the third fast pulse counter 77. After the power accumulation result accumulated by the first fast pulse counter 75 reaches the power of one pulse constant, the first power register 78 may be controlled to accumulate one unit of power and output one power pulse, after the power accumulation result accumulated by the second fast pulse counter 76 reaches the power of one pulse constant, the second power register 79 may be controlled to accumulate one unit of power and output one power pulse, and after the power accumulation result accumulated by the third fast pulse counter 77 reaches the power of one pulse constant, the third power register 710 may be controlled to accumulate one unit of power and output one power pulse.
It should be noted that the electric energy metering device provided in fig. 7 is only used as an example and is not meant to limit the present application.
It can be seen from the foregoing that, in the electric energy metering method provided by the embodiment of the present application, the instantaneous power of the power grid is obtained, and the instantaneous power is subjected to power integration processing by at least two groups of parallel power integrators, so as to obtain respective corresponding electric energy accumulation results of each group of power integrators, and then the respective corresponding electric energy metering results of each group of power integrators are calculated according to the respective corresponding electric energy accumulation results of each group of power integrators. Because the power integration modes executed by at least two groups of parallel power integrators are not completely identical, the power integration modes executed by each power integrator can be set according to the requirement on electric energy metering in practical application, so that the electric energy metering results corresponding to each power integrator can be obtained, different requirements on electric energy metering in practical application can be met, and the comprehensiveness and applicability of the electric energy metering method are improved.
Based on the electric energy metering method provided in the foregoing embodiment, the embodiment of the present application further provides an electric energy metering device implementing the foregoing method embodiment, please refer to fig. 8, and fig. 8 is a schematic structural diagram of another electric energy metering device provided in the embodiment of the present application. As shown in fig. 8, the electric energy metering device 80 may include a power acquisition unit 81, a power integration unit 82, and an electric energy metering unit 83. Wherein:
The power acquisition unit 81 is used for acquiring the instantaneous power of the power grid.
The power integration unit 82 is configured to perform power integration processing on the instantaneous power through at least two groups of parallel power integrators, so as to obtain respective corresponding electric energy accumulation results of each group of power integrators; wherein, the power integration modes executed by at least two groups of parallel power integrators are not identical.
The electric energy metering unit 83 is configured to calculate the electric energy metering result corresponding to each group of power integrators according to the electric energy accumulation result corresponding to each group of power integrators.
Optionally, the electric energy metering device 80 may further include a second acquisition unit and a first determination unit. Wherein:
the second obtaining unit is used for obtaining the numerical value of the integration mode register corresponding to any group of power integrators.
The first determining unit is used for determining the power integration mode of any group of power integrators according to the numerical value.
Optionally, the first determining unit is specifically configured to:
if the value is the first value, determining the power integration mode of any group of power integrators as an absolute value integration mode;
if the numerical value is the second numerical value, determining the power integration mode of any group of power integrators as algebraic sum integration mode;
If the value is the third value, determining the power integration mode of any group of power integrators as a forward integration mode;
if the value is the fourth value, determining the power integration mode of any group of power integrators as a reverse integration mode.
Optionally, if the power integration mode of any one group of power integrators is an absolute value integration mode, the power integration unit 82 is specifically configured to:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the absolute value of the instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulation values corresponding to the time periods respectively to obtain an electric energy accumulation result corresponding to any group of power integrators.
Optionally, if the power integration mode of any one group of power integrators is algebraic sum integration mode, the power integration unit 82 is specifically configured to:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulation values corresponding to the time periods respectively to obtain an electric energy accumulation result corresponding to any group of power integrators.
Optionally, if the power integration mode of any one group of power integrators is a forward integration mode, the power integration unit 82 is specifically configured to:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the forward instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
Optionally, if the power integration mode of any one group of power integrators is a reverse integration mode, the power integration unit 82 is specifically configured to:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the reverse instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
It should be noted that, because the content of information interaction between the above units, execution process, and the like is based on the same concept as the method embodiment of the present application, specific functions and technical effects thereof may be referred to the method embodiment specifically, and will not be described herein again.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 9, the electronic device 9 provided in the present embodiment may include: a processor 90, a memory 91 and a computer program 92 stored in the memory 91 and executable on the processor 90. Such as a program corresponding to an electric energy metering method. The steps applied to the embodiment of the electric energy metering method described above are implemented when the processor 90 executes the computer program 92, for example, S101 to S103 shown in fig. 1, S201 to S204 shown in fig. 2, S301 to S303 in fig. 3, S301 to S402 in fig. 4, S301 to S502 in fig. 5, and S301 to S602 shown in fig. 6. Alternatively, the processor 90, when executing the computer program 92, implements the functions of the modules/units in the embodiment corresponding to the electronic device 9, for example, the functions of the units 81 to 83 shown in fig. 8.
By way of example, the computer program 92 may be partitioned into one or more modules/units, which are stored in the memory 91 and executed by the processor 90 to complete the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing particular functions for describing the execution of the computer program 92 in the electronic device 9. For example, the computer program 92 may be divided into a power obtaining unit 81, a power integrating unit 82 and an electric energy metering unit 83, and the specific functions of the respective units are described in the corresponding embodiment of fig. 8, which is not repeated here.
It will be appreciated by those skilled in the art that fig. 9 is merely an example of the electronic device 9 and is not limiting of the electronic device 9 and may include more or fewer components than shown, or certain components may be combined, or different components.
The processor 90 may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field-programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 91 may be an internal storage unit of the electronic device 9, such as a hard disk or a memory of the electronic device 9. The memory 91 may also be an external storage device of the electronic device 9, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card), or the like, which are provided on the electronic device 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the electronic device 9. The memory 91 is used to store computer programs and other programs and data required by the electronic device. The memory 91 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units according to needs, i.e. the internal structure of the electric energy metering device is divided into different functional units, so as to perform all or part of the functions described above. The functional units in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present application. The specific working process of the units in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
Embodiments of the present application also provide a computer readable storage medium having a computer program stored therein, which when executed by a processor, can implement the steps of the respective method embodiments described above.
Embodiments of the present application provide a computer program product for causing an electronic device to carry out the steps of the method embodiments described above when the computer program product is run on the electronic device.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference may be made to related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A method of metering electrical energy comprising:
acquiring the instantaneous power of a power grid;
performing power integration processing on the instantaneous power through at least two groups of parallel power integrators to respectively obtain electric energy accumulation results corresponding to each group of power integrators; wherein the power integration modes executed by the at least two groups of parallel power integrators are not identical;
and respectively calculating to obtain the electric energy metering result corresponding to each group of the power integrators according to the electric energy accumulation result corresponding to each group of the power integrators.
2. The method of claim 1, wherein the power integration mode of any one of the at least two sets of parallel power integrators is determined by:
acquiring the numerical value of an integration mode register corresponding to any group of power integrators;
and determining the power integration mode of any group of power integrators according to the numerical value.
3. The method of claim 2, wherein determining the power integration mode of the any one of the power integrators according to the value comprises:
If the numerical value is a first numerical value, determining that the power integration mode of any group of power integrators is an absolute value integration mode;
if the numerical value is a second numerical value, determining that the power integration mode of any group of power integrators is algebraic sum integration mode;
if the value is a third value, determining that the power integration mode of any group of power integrators is a forward integration mode;
and if the numerical value is a fourth numerical value, determining that the power integration mode of any group of power integrators is a reverse integration mode.
4. The electric energy metering method of claim 3, wherein if the power integration mode of the arbitrary group of power integrators is an absolute value integration mode, performing power integration processing on the instantaneous power by the arbitrary group of power integrators comprises:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the absolute value of the instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
5. The electric energy metering method of claim 3, wherein if the power integration mode of the arbitrary group of power integrators is algebraic sum integration mode, performing power integration processing on the instantaneous power by the arbitrary group of power integrators comprises:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
6. The electric energy metering method of claim 3, wherein if the power integration mode of the arbitrary group of power integrators is a forward integration mode, performing power integration processing on the instantaneous power by the arbitrary group of power integrators comprises:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the forward instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
And adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
7. The electric energy metering method of claim 3, wherein if the power integration mode of the arbitrary group of power integrators is a reverse integration mode, performing power integration processing on the instantaneous power by the arbitrary group of power integrators comprises:
acquiring respective corresponding instantaneous power of each time period contained in a preset time period;
calculating the integral of the reverse instantaneous power in the time period for each time period to obtain the electric energy accumulated value of the time period;
and adding the electric energy accumulated values corresponding to the time periods respectively to obtain an electric energy accumulated result corresponding to the power integrator of any group.
8. An electrical energy metering device, comprising:
the power acquisition unit is used for acquiring the instantaneous power of the power grid;
the power integration unit is used for performing power integration processing on the instantaneous power through at least two groups of parallel power integrators to respectively obtain electric energy accumulation results corresponding to each group of power integrators; wherein the power integration modes executed by the at least two groups of parallel power integrators are not identical;
And the electric energy metering unit is used for respectively calculating the electric energy metering result corresponding to each group of the power integrators according to the electric energy accumulation result corresponding to each group of the power integrators.
9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the power metering method according to any of claims 1 to 7 when the computer program is executed.
10. A computer-readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the electrical energy metering method according to any of claims 1 to 7.
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