Method, device and equipment for classifying distributed photovoltaic power generation load power

Abstract

This disclosure provides a method, apparatus, and equipment for metering the classified load power of distributed photovoltaic (PV) power generation. The specific implementation of the method includes: setting up power metering points for each distributed PV power generation mode; determining the operating mode of the distributed PV power generation user's load power in response to determining the existence of classified electricity loads; calculating the power consumption at each power metering point corresponding to the determined operating mode; and determining the classified electricity load power of the distributed PV power generation user based on the power consumption at each power metering point. This implementation achieves accuracy in the metering of classified electricity loads, thereby ensuring accuracy in the metering of electricity loads subject to classified pricing, and thus meeting the requirements of fair and impartial metering.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of distributed photovoltaic power generation metering technology, specifically to the metering methods, apparatus, and equipment for classified load power generation of distributed photovoltaic power generation. Background Technology

[0002] For existing distributed photovoltaic (PV) power generation users with surplus electricity fed into the grid, where there are categorized electricity loads, the applicable electricity price differs from that of the main load. Therefore, it is necessary to set up sub-metering points to measure the electricity consumption of each categorized load to meet the requirements of fair and impartial metering. Metering point 1 is the grid connection and disconnection metering point, measuring the electricity generated by the distributed PV power generation user to the grid (the electricity disconnected from the grid is subject to the main electricity price, hereinafter referred to as price 1). Metering point 2 measures the user's self-consumption electricity. Metering point 3 measures the PV power generation. Metering point 4 measures the user's self-consumption electricity (subject to the categorized electricity price, hereinafter referred to as price 2).

[0003] The existing distributed photovoltaic power generation classification electricity load metering, with a metering device installed on user self-consumption 2 (i.e. branch 4) as metering point 4, has the following disadvantages: the electricity metered at metering point 4 includes both user self-consumption and surplus electricity fed to the grid for self-consumption. The electricity that needs to be settled is the electricity fed to the public grid, while the surplus electricity fed to the grid for self-consumption does not need to be settled. The electricity meter cannot accurately measure the electricity fed to the public grid, resulting in unfair and unjust metering. Summary of the Invention

[0004] The summary section of this disclosure is intended to provide a brief overview of concepts that will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions. Some embodiments of this disclosure propose methods, apparatus, and devices for metering the classified load power of distributed photovoltaic power generation to address the technical problems mentioned in the background section above.

[0005] In a first aspect, some embodiments of this disclosure provide a method for metering the electricity consumption of distributed photovoltaic power generation classified loads, the method comprising: setting up electricity metering points for each distributed photovoltaic power generation method;

[0006] In response to the determination of the existence of classified electricity loads, the operating mode of the distributed photovoltaic power generation user load is determined;

[0007] Based on a defined operating mode, calculate the electricity consumption at each electricity metering point corresponding to that defined operating mode;

[0008] Based on the electricity consumption at each electricity metering point, the classified electricity load of the distributed photovoltaic power generation user is determined.

[0009] Secondly, some embodiments of this disclosure provide a metering device for classified load electricity of distributed photovoltaic power generation. The device includes: a setting unit, used to set electricity metering points for each distributed photovoltaic power generation method.

[0010] The operation mode determination unit is used to determine the operation mode of distributed photovoltaic power generation user load in response to the determination that there are classified power loads;

[0011] A calculation unit is used to calculate the electricity consumption at each electricity metering point corresponding to a determined operating mode, based on a determined operating mode.

[0012] The power consumption determination unit is used to determine the classified power consumption of the distributed photovoltaic power generation user based on the power consumption of each power metering point.

[0013] Thirdly, some embodiments of this disclosure provide an electronic device, including:

[0014] Memory is used to store executable instructions;

[0015] A processor, configured to operate the electronic device according to the instructions to perform the method as described in the first aspect of the present invention.

[0016] Fourthly, some embodiments of this disclosure provide a computer-readable medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the method described in the first aspect of this invention.

[0017] One embodiment of the above-described embodiments of this disclosure has the following beneficial effects: First, electricity metering points are set up for each distributed photovoltaic power generation method; then, in response to the determination of the existence of classified electricity loads, the operating mode of the distributed photovoltaic power generation user's load electricity is determined; subsequently, based on the determined operating mode, the electricity volume of each electricity metering point corresponding to the determined operating mode is calculated; finally, based on the electricity volume of each electricity metering point, the classified electricity load electricity volume of the distributed photovoltaic power generation user is determined. This invention achieves accurate metering of classified electricity loads for distributed photovoltaic power generation users with surplus electricity fed into the grid, thereby ensuring accurate metering of electricity loads subject to classified pricing, and thus meeting the requirements of fair and impartial metering. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0019] Figure 1This is a flowchart of some embodiments of the metering method for classified load electricity of distributed photovoltaic power generation according to this disclosure;

[0020] Figure 2 This is a schematic diagram of an application scenario for setting up electricity metering points when there is a classification of electrical loads according to this disclosure;

[0021] Figure 3 This is a schematic diagram of the structure of some embodiments of the metering device for classifying load electricity of distributed photovoltaic power generation according to the present disclosure;

[0022] Figure 4 This is a schematic diagram of the structure of an electronic device suitable for implementing some embodiments of the present disclosure. Detailed Implementation

[0023] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0024] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0025] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0026] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Figure 1 The flowchart 100 illustrates some embodiments of the method for metering classified load power of distributed photovoltaic power generation according to the present disclosure. The method for metering classified load power of distributed photovoltaic power generation includes the following steps:

[0030] Step 101: Set up electricity metering points for each distributed photovoltaic power generation method.

[0031] In some embodiments, the implementing entity of the distributed photovoltaic (PV) power generation classification load metering method can set up separate power metering points for each distributed PV power generation method. These power metering points are used to measure the power consumption corresponding to the respective power generation method. As an example, there can be many types of distributed PV power generation methods; the implementing entity can set up a corresponding power metering point for each power generation method, or it can set up a single power metering point for two or more power generation methods as needed.

[0032] In some optional implementations of certain embodiments, the distributed photovoltaic power generation method includes public grid connection and connection, main load electricity consumption, photovoltaic power generation, and classified load electricity consumption. The step of setting up electricity metering points for each distributed photovoltaic power generation method includes: setting up corresponding first electricity metering point, second electricity metering point, and third electricity metering point for the public grid connection and connection, the main load electricity consumption, and the photovoltaic power generation; and setting up corresponding fourth electricity metering point for the photovoltaic power generation and the classified load electricity consumption. Figure 2 This is a schematic diagram of an application scenario for setting up electricity metering points when there are classified electrical loads according to this disclosure; a set of current transformers is installed on each of the two branches of the classified load and the photovoltaic generator, and the same terminals of the two sets of current transformers are connected in parallel to the electricity meter to realize the correct metering of the electricity discharged from the public power grid by the classified load under various operating conditions, thus achieving the purpose of fair and just metering.

[0033] like Figure 2 As shown, the first power metering point is "metering point 1" in the figure. The second, third and fourth power metering points are also "metering point 2", "metering point 3" and "metering point 4" in the figure, respectively. The "i1, i2, i3, i4 and i5" labels in the figure correspond to the current passing through the line corresponding to the label. The current arrows indicate the direction of the current.

[0034] Step 102: In response to the determination of the existence of classified electricity loads, determine the operating mode of the distributed photovoltaic power generation user load electricity.

[0035] In some embodiments, the aforementioned executing entity may determine the operating mode of the distributed photovoltaic (PV) power generation user load in response to determining the existence of categorized electricity loads. Because there are various distributed PV power generation methods, and these methods can operate simultaneously or individually, there can also be various corresponding operating modes, such as... Figure 2 As shown, different operating modes can correspond to different combinations of distributed photovoltaic power generation methods, and different distributed photovoltaic power generation methods will ultimately result in... Figure 2 The different currents on the circuit will result in different electricity consumption at each electricity metering point.

[0036] In some optional implementations of certain embodiments, the operation mode of the distributed photovoltaic power generation user load includes: a first operation mode in which photovoltaic power generation does not generate electricity and the classified loads are disconnected from the public grid; a second operation mode in which photovoltaic power generation is used, the classified loads are powered by photovoltaic power generation, and the surplus electricity is fed into the grid; and a third operation mode in which photovoltaic power generation is used, and the classified loads are powered by both photovoltaic power generation and the public grid.

[0037] Step 103: Based on the determined operating mode, calculate the electricity consumption at each electricity metering point corresponding to the determined operating mode.

[0038] In some embodiments, the aforementioned executing entity may calculate the electricity consumption at each electricity metering point corresponding to a determined operating mode based on a determined operating mode.

[0039] In some optional implementations of some embodiments, based on the operating mode, the current and voltage passing through the third electricity metering point, the fourth electricity metering point, and the power supply from the public power grid are determined respectively; based on the current and the voltage, the electricity consumption at the third electricity metering point and the fourth electricity metering point, and the power consumption of the classified electricity loads disconnected from the public power grid are determined respectively.

[0040] In some optional implementations of certain embodiments, based on different operating modes, the electricity consumption of the third electricity metering point, the electricity consumption of the fourth electricity metering point, and the electricity consumption of the classified electricity loads disconnected from the public power grid, the forward electricity consumption of the third and fourth electricity metering points and the electricity consumption of the classified electricity loads disconnected from the public power grid under each operating mode are determined respectively.

[0041] As an example, such as Figure 2 As shown, the determined operating mode can be the first operating mode mentioned above, where 1 in the subscript parentheses indicates the first operating mode. Therefore, i5 = i3 + i4, ui5 = ui3 + ui4, p 5(1) =p 3(1) +p 4(1) Classified load power p 4(1) =p 5(1) -p 3(1) At metering point 4, the current measured by the electricity meter is i3+i4, and the power measured is p′. 4(1) =u(i3+i4)=p 3(1) +p 4(1) That is, W′ 4(1)=p3(1)t+p4(1)t(The electricity at metering point 4 is included in the positive direction, including the electricity from the public grid and the electricity consumed by the photovoltaic generator),(The electricity at metering point 3 is included in the positive direction, which is only the electricity consumed by the photovoltaic generator).

[0042] Optionally, the definite operating mode can be the second operating mode mentioned above, where the 2 in the parentheses indicates the second operating mode. Therefore, i3 = i4 + i5, ui3 = ui4 + ui5, p 3(2) =p 4(2) +p 5(2) Classified load power p 4(2) =p 3(2) -p 5(2) At metering point 4, the current measured by the electricity meter is i4-i3, and the power measured is p′. 4(2) =u(i4-i3)=p 4(2) -p 3(2) That is, W′4( 1) =p 4(2) tp 3(2 )t(The electricity at metering point 4 is counted in reverse; the reverse electricity is the electricity output to the system, i.e., branch 5), W′ 3(2) =p 3(2) t(Electricity at metering point 3 is counted in reverse).

[0043] Optionally, the definitive operating mode can be the third operating mode mentioned above, where the 3 in parentheses indicates the third operating mode. Therefore, i4 = i3 + i5, ui4 = ui3 + ui5, p 4(3) =p 3(3) +p 5(3) Classified load power p 4(3) =p 3(3) +p 5(3) At metering point 4, the current measured by the electricity meter is i4-i3, and the power measured is p′. 4(3) =u(i4-i3)=p 4(3) -p 3(3) That is, W′ 4(3) =p 4(3) tp 3(3) t (The electricity at metering point 4 is counted in the positive direction; the positive electricity is the electricity going down to the public power grid, i.e., branch 5), W′ 3(3) =p 3(3) t(Electricity at metering point 3 is counted in reverse).

[0044] Step 104: Based on the electricity consumption of each electricity metering point, determine the classified electricity load of the distributed photovoltaic power generation user.

[0045] In some embodiments, the aforementioned implementing entity can determine the categorized electricity load of the distributed photovoltaic power generation user based on the electricity consumption at each electricity metering point. For example, as... Figure 2 As shown, the difference between the positive power metering result of metering point 4 and the positive power metering result of metering point 3 can be used to obtain the classified power load of distributed photovoltaic power generation users.

[0046] In some optional implementations of some embodiments, in response to determining that the operating mode is the first operating mode, the difference between the electricity consumption corresponding to the third electricity metering point and the fourth electricity metering point is calculated to obtain the classified electricity load of the distributed photovoltaic power generation user.

[0047] In some optional implementations of certain embodiments, the total positive electricity consumption at the fourth electricity metering point, the total positive electricity consumption at the third electricity metering point, and the electricity consumption of the categorized loads that needs to be settled from the public power grid during the operation of the three operating modes are determined; for example, such as Figure 2 As shown, during the three operating modes, the total positive charge at metering point 4 is as follows: W′4=p′t=[p 3(1 )+p 4(1) +p 4(3) -p 3(3) During the three operating modes, the total positive charge at metering point 3 is as follows: W′3=p′t=[p 3(1) During the three operating modes, the amount of electricity W that needs to be settled from the public power grid is as follows: W = [p 4(1) +p 4(3) -p 3(3) ]t;

[0048] The difference in electricity is obtained by subtracting the total positive electricity from the total positive electricity at the third electricity metering point from the total positive electricity at the fourth electricity metering point.

[0049] For example, the difference between the total positive electricity at metering point 4 and the total positive electricity at metering point 3 is shown below:

[0050] It is determined whether the difference in electricity volume is equal to the electricity volume that the classified load needs to settle from the public power grid; in response to determining that the difference in electricity volume is equal to the electricity volume that needs to be settled from the public power grid, information is generated to characterize the accuracy of the metering. The difference between the total positive electricity volume at metering point 4 and the total positive electricity volume at metering point 3 is completely consistent with the electricity volume W that the classified load needs to settle from the public power grid, thereby achieving accurate metering of the electricity volume that the classified load needs to settle from the public power grid.

[0051] This disclosure provides a method for metering the classified load electricity of distributed photovoltaic (PV) power generation. First, electricity metering points are set up for each type of distributed PV power generation. Then, in response to the determination of classified electricity load, the operating mode of the distributed PV power generation user's load electricity is determined. Next, based on the determined operating mode, the electricity consumption at each metering point corresponding to that mode is calculated. Finally, based on the electricity consumption at each metering point, the classified electricity load electricity consumption of the distributed PV power generation user is determined. This invention achieves accurate metering of classified electricity load when distributed PV power generation users with surplus electricity connected to the grid have classified electricity load, thereby ensuring accurate metering of electricity load subject to classified pricing and meeting the requirements of fair and impartial metering.

[0052] Further reference Figure 3 As an implementation of the methods shown in the above figures, this disclosure provides some embodiments of a metering device for classifying the electricity consumption of distributed photovoltaic power generation loads. These device embodiments are similar to... Figure 1 Corresponding to the method embodiments shown, the device can be specifically applied to various electronic devices.

[0053] like Figure 3 As shown, a metering device 300 for classifying the electricity consumption of distributed photovoltaic (PV) power generation in some embodiments includes: a setting unit 301, an operation mode determination unit 302, a calculation unit 303, and an electricity consumption determination unit 304; wherein, the setting unit 301 is used to set electricity metering points for each distributed PV power generation mode; the operation mode determination unit 302 is used to determine the operation mode of the distributed PV power generation user's load electricity consumption in response to determining the existence of classified electricity load; the calculation unit 303 is used to calculate the electricity consumption of each electricity metering point corresponding to the determined operation mode; and the electricity consumption determination unit 304 is used to determine the classified electricity load electricity consumption of the distributed PV power generation user based on the electricity consumption of each electricity metering point.

[0054] This disclosure provides several embodiments of a metering device for classifying the electricity consumption of distributed photovoltaic (PV) power generation. First, electricity metering points are set up for each type of distributed PV power generation. Then, in response to the determination of the existence of classified electricity loads, the operating mode of the distributed PV power generation user's load electricity is determined. Next, based on the determined operating mode, the electricity consumption at each metering point corresponding to that mode is calculated. Finally, based on the electricity consumption at each metering point, the classified electricity load electricity consumption of the distributed PV power generation user is determined. This invention achieves accurate metering of classified electricity loads for distributed PV power generation users with surplus electricity fed into the grid, thereby ensuring accurate metering of electricity loads subject to classified pricing and meeting the requirements of fair and impartial metering.

[0055] In some optional implementations of the embodiments, the distributed photovoltaic power generation method includes public grid connection and connection, main load electricity consumption, photovoltaic power generation and classified load electricity consumption; the setting unit 301 in the metering device 300 for the classified load electricity consumption of distributed photovoltaic power generation is further configured to: set corresponding first electricity metering point, second electricity metering point and third electricity metering point for the public grid connection and connection, the main load electricity consumption and the photovoltaic power generation respectively; and set corresponding fourth electricity metering point for the photovoltaic power generation and the classified load electricity consumption.

[0056] In some optional implementations of the embodiments, the operation mode of the distributed photovoltaic power generation user load includes: a first operation mode in which photovoltaic power generation does not generate electricity and the classified loads are disconnected from the public grid; a second operation mode in which photovoltaic power generation is used, the classified loads are powered by photovoltaic power generation, and the surplus electricity is fed into the grid; and a third operation mode in which photovoltaic power generation is used, and the classified loads are powered by both photovoltaic power generation and the public grid.

[0057] In some optional implementations of the embodiments, the calculation unit 303 in the metering device 300 for classified load electricity of distributed photovoltaic power generation is further configured to: determine the current and voltage passing through the third electricity metering point, the fourth electricity metering point, and the electricity discharged from the public power grid based on the operating mode; and determine the electricity at the third electricity metering point and the fourth electricity metering point and the electricity discharged from the public power grid by the classified load based on the current and the voltage.

[0058] In some optional implementations of the embodiments, the power determination unit 304 in the metering device 300 for classified load power of distributed photovoltaic power generation is further configured to: in response to determining that the operating mode is the first operating mode, calculate the difference between the power corresponding to the third power metering point and the fourth power metering point to obtain the classified power load of the distributed photovoltaic power generation user.

[0059] In some optional implementations of the embodiments, the metering device 300 for the classified load electricity of distributed photovoltaic power generation is further configured to: determine the forward electricity of the third and fourth metering points and the electricity to be settled from the public grid for the classified load under each operating mode, based on different operating modes, the electricity of the third metering point, the electricity of the fourth metering point, and the electricity of the classified load from the public grid.

[0060] In some optional implementations of the embodiments, the metering device 300 for the classified load electricity of distributed photovoltaic power generation is further configured to: determine the total positive electricity of the fourth electricity metering point, the total positive electricity of the third electricity metering point, and the electricity to be settled from the public grid for the classified load during the operation of the three operating modes; subtract the total positive electricity of the third electricity metering point from the total positive electricity of the fourth electricity metering point to obtain the difference electricity; determine whether the difference electricity is equal to the electricity to be settled from the public grid for the classified load; and generate information to characterize the accuracy of the metering in response to determining that the difference electricity is equal to the electricity to be settled from the public grid.

[0061] It is understandable that the units described in the device 300 are related to the reference. Figure 1 The steps in the described method correspond accordingly. Therefore, the operations, features, and beneficial effects described above for the method also apply to the device 300 and the units contained therein, and will not be repeated here.

[0062] Corresponding to the above method embodiments, this embodiment also provides an electronic device, please refer to... Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure.

[0063] like Figure 4 As shown, the electronic device 400 may include a processor 420 and a memory 410, the memory 410 being used to store executable instructions; the processor 420 being used to operate the electronic device according to the instructions to perform a method according to any embodiment of the present disclosure.

[0064] It should be noted that, in some embodiments of this disclosure, the computer-readable medium described above may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In some embodiments of this disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In some embodiments of this disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0065] In some implementations, clients and servers can communicate using any currently known or future-developed network protocol such as HTTP (Hypertext Transfer Protocol) and can interconnect with digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include local area networks (“LANs”), wide area networks (“WANs”), the Internet (e.g., the Internet of Things), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future-developed networks.

[0066] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device. The aforementioned computer-readable medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: set up electricity metering points for each distributed photovoltaic power generation method; determine the operating mode of the distributed photovoltaic power generation user's load electricity in response to determining the existence of categorized electricity loads; calculate the electricity consumption at each electricity metering point corresponding to the determined operating mode based on the determined operating mode; and determine the categorized electricity load electricity consumption of the distributed photovoltaic power generation user based on the electricity consumption at each electricity metering point.

[0067] Computer program code for performing operations of some embodiments of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0068] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0069] The units described in some embodiments of this disclosure can be implemented in software or hardware. The described units can also be housed in a processor; for example, a processor may be described as including a setting unit, an operating mode determination unit, a calculation unit, and a power consumption determination unit. The names of these units do not necessarily limit the specific unit; for example, the power consumption determination unit may also be described as "a unit that determines the classified power consumption of the distributed photovoltaic power generation user based on the power consumption at each power metering point."

[0070] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0071] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A method for measuring the classified load power of distributed photovoltaic power generation, comprising: A separate electricity metering point is set up for each distributed photovoltaic (PV) power generation method. The distributed PV power generation methods include public grid connection / disconnection, main load electricity consumption, PV power generation, and classified load electricity consumption. Setting up electricity metering points for each distributed PV power generation method includes: setting up a first electricity metering point, a second electricity metering point, and a third electricity metering point for the public grid connection / disconnection, the main load electricity consumption, and the PV power generation, respectively; and setting up a fourth electricity metering point for the PV power generation and the classified load electricity consumption, wherein the fourth electricity metering point is achieved by connecting the current transformer of the classified load branch and the current transformer of the PV power generation branch in parallel to the same electricity meter. In response to the determination of the existence of classified electricity loads, the operating mode of the distributed photovoltaic (PV) power generation user load is determined; wherein, the operating mode includes: a first operating mode - PV power generation does not generate electricity and classified loads are disconnected from the public grid; a second operating mode - PV power generation, classified loads are powered by PV power generation, and surplus electricity is fed into the grid; a third operating mode - PV power generation, classified loads are powered by both PV power generation and the public grid simultaneously; Based on a determined operating mode, the electricity consumption at each electricity metering point corresponding to the determined operating mode is calculated, including: based on the operating mode, determining the current and voltage passing through the third electricity metering point, the fourth electricity metering point, and the electricity discharged from the public power grid; based on the current and the voltage, determining the electricity consumption at the third electricity metering point and the fourth electricity metering point, and the electricity discharged from the public power grid by the classified electricity load; Based on the electricity consumption at each electricity metering point, the classified electricity load of the distributed photovoltaic power generation user is determined.

2. The method according to claim 1, characterized in that, The process of determining the categorized electricity load of the distributed photovoltaic power generation user based on the electricity consumption at each electricity metering point includes: In response to determining that the operating mode is the first operating mode, the difference between the electricity consumption corresponding to the third electricity metering point and the fourth electricity metering point is calculated to obtain the classified electricity load of the distributed photovoltaic power generation user.

3. The method according to claim 2, characterized in that, The method further includes: Based on different operating modes, the electricity consumption at the third electricity metering point, the electricity consumption at the fourth electricity metering point, and the electricity consumption of the categorized electricity loads disconnected from the public power grid, the forward electricity consumption at the third and fourth electricity metering points and the electricity consumption of the categorized electricity loads that need to be settled from the public power grid under each operating mode are determined respectively.

4. The method according to claim 3, characterized in that, The method further includes: Determine the total positive electricity volume at the fourth electricity metering point, the total positive electricity volume at the third electricity metering point, and the electricity volume that needs to be settled from the public power grid for the classified electricity loads during the operation of the three operating modes; The difference in electricity is obtained by subtracting the total positive electricity from the total positive electricity at the third electricity metering point from the total positive electricity at the fourth electricity metering point. Determine whether the difference in electricity volume is equal to the amount of electricity that the categorized electricity load needs to be charged for from the public power grid; In response to determining that the difference in electricity consumption equals the downstream electricity consumption, information is generated to characterize the accuracy of the metering.

5. A metering device for classifying the electricity consumption of distributed photovoltaic power generation loads, comprising: The setting unit is used to set up electricity metering points for each distributed photovoltaic power generation method; the distributed photovoltaic power generation methods include public grid connection and connection, main load electricity consumption, photovoltaic power generation, and classified load electricity consumption; the setting unit is specifically used to set up corresponding first electricity metering points, second electricity metering points, and third electricity metering points for the public grid connection and connection, the main load electricity consumption, and the photovoltaic power generation respectively; and to set up corresponding fourth electricity metering points for the photovoltaic power generation and the classified load electricity consumption, wherein the fourth electricity metering point is implemented by connecting the current transformer of the classified load branch and the current transformer of the photovoltaic power generation branch in parallel to the same electricity meter; An operation mode determination unit is used to determine the operation mode of distributed photovoltaic (PV) power generation user load in response to the determination of the existence of classified electricity loads; the operation mode of the distributed PV power generation user load includes: a first operation mode in which PV power generation does not generate electricity and classified loads are disconnected from the public grid; a second operation mode in which PV power generation is used and classified loads are powered by PV power generation, with surplus electricity fed into the grid; and a third operation mode in which PV power generation is used and classified loads are powered by both PV power generation and the public grid. The calculation unit is used to calculate the electricity consumption at each electricity metering point corresponding to a determined operating mode based on the determined operating mode; specifically, the calculation unit is used to determine the current and voltage passing through the third electricity metering point, the fourth electricity metering point, and the electricity consumption disconnected from the public power grid based on the operating mode; and to determine the electricity consumption at the third electricity metering point and the fourth electricity metering point, and the electricity consumption disconnected from the public power grid by the classified electricity loads based on the current and the voltage. The power consumption determination unit is used to determine the classified power consumption of the distributed photovoltaic power generation user based on the power consumption of each power metering point.

6. An electronic device, characterized in that, include: Memory is used to store executable instructions; A processor, configured to operate the electronic device according to the instructions to perform the method as described in any one of claims 1-4.

7. A computer-readable medium having a computer program stored thereon, wherein, When the program is executed by the processor, it implements the method as described in any one of claims 1-4.

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