Electric energy metering system, electric energy metering method, equipment, storage medium and product

Abstract

The invention provides an electric energy metering system, an electric energy metering method, equipment, a storage medium and a product, and relates to the technical field of electric energy metering, and the method comprises the steps: a multi-source electric energy scheduling module is used for responding to a first scheduling instruction, selecting and switching to a target electric power source, and transmitting the electric energy generated by the target electric power source to a load unit through a load bus; the communication sending module is used for determining a power source identifier of a target power source in response to the second scheduling instruction, and sending the power source identifier to the communication receiving module; the communication receiving module is used for receiving the power source identifier and determining a target power source based on the power source identifier; the second electric energy metering unit is used for metering and generating power utilization information of the load unit; and the first electric energy metering unit is used for metering and generating electric parameter information of the load bus. Through the mode, accurate distinguishing of the power sources can be realized, so that accurate metering of the load side electric energy is realized, and accurate charging of different power sources and accurate statistics of electric parameters are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of electric energy metering technology, and in particular to an electric energy metering system, an electric energy metering method, a device, a storage medium and a product. Background Art

[0002] In a diversified power supply system, multiple power sources, such as photovoltaics, wind power, hydropower, and traditional thermal power, work together to provide stable and reliable power to load units. This diversified energy allocation strategy not only enhances the flexibility and stability of the power system, ensuring that the needs of load units can be met under various climate and energy market conditions, but also promotes efficient energy utilization. Through intelligent scheduling and optimized management, the complementary advantages of different power sources are fully utilized to ensure a secure and stable power supply.

[0003] However, the diversified power supply system has brought new technical problems for the accurate measurement of electric energy on the load side and accurate billing on the power supply side. In some related technologies, the electric meter on the load side can only measure the total amount of electricity consumed by the load unit, but cannot measure the total amount of electricity in fine granularity according to the power source dimension. For example, the electric meter cannot measure the proportion of photovoltaic power supply and the proportion of grid power supply in the total amount of electricity, which makes it difficult for the power supply side to accurately calculate the benefits of different power sources based on the electric meter on the load side. This is because different types of power sources usually supply power to the load unit through the same load bus. Therefore, the load side cannot distinguish which power source is supplying power in different time periods, and cannot accurately distinguish the power source, which leads to the inability to accurately measure electric energy. If different types of power sources need to supply power to the load unit through different load buses, the construction cost will increase, and the utilization rate of different load buses will be reduced, which is likely to cause waste of resources.

[0004] Therefore, in a diversified power supply system, existing technologies cannot achieve accurate metering of electric energy, which makes it difficult to accurately bill different types of power sources. Summary of the Invention

[0005] The present invention provides an electric energy metering system, an electric energy metering method, an apparatus, a storage medium and a product, which are used to solve the defect that the existing technology cannot achieve accurate measurement of electric energy, which in turn makes it difficult to achieve accurate billing of different types of power sources.

[0006] The present invention provides an electric energy metering system, comprising: a multi-source electric energy dispatching module, a bus electric energy metering module, a terminal electric energy metering module and a load unit, wherein the multi-source electric energy dispatching module comprises at least two types of electric sources, the bus electric energy metering module comprises a first electric energy metering unit and a communication sending module, the terminal electric energy metering module comprises a second electric energy metering unit and a communication receiving module, the multi-source electric energy dispatching module is connected to the load unit via a load bus, the load bus is supplied with power by one electric source within a time slice, the bus electric energy metering module is arranged on the load bus, and the terminal electric energy metering module is arranged on the load unit; the multi-source electric energy dispatching module is used to respond to a first dispatching instruction, The target power source is selected and switched to from the power sources of the target type, and the electric energy generated by the target power source is transmitted to the load unit through the load bus; the target power source is the power source that supplies power to the load unit in the current time slice; the communication sending module is used to determine the power source identifier of the target power source in response to the second scheduling instruction, and send the power source identifier to the communication receiving module; the communication receiving module is used to receive the power source identifier and determine the target power source based on the power source identifier; the second electric energy metering unit is used to measure and generate the power consumption information of the load unit; the power consumption information includes the power supply information of the target power source; the first electric energy metering unit is used to measure and generate the electrical parameter information of the load bus.

[0007] According to an electric energy metering system provided by the present invention, the communication sending module is a PLC communication master station, and the communication receiving module is a PLC communication slave station; the PLC communication master station is used to determine the power source identification of the target power source in response to the second scheduling instruction, and send the power source identification to the PLC communication slave station through the load bus; wherein the electric energy generated by the target power source carries the power source identification; the PLC communication slave station is used to receive the power source identification through the load bus, and determine the target power source based on the power source identification.

[0008] According to the present invention, an electric energy metering system includes a scheduling and control platform; the scheduling and control platform is used to generate a first scheduling instruction and send the first scheduling instruction to a multi-source electric energy scheduling module, so that the multi-source electric energy scheduling module responds to the first scheduling instruction and selects and switches to a target electric energy source from different types of electric energy sources; the scheduling and control platform is used to generate a second scheduling instruction and send the second scheduling instruction to a PLC communication master station, so that the PLC communication master station responds to the second scheduling instruction, determines the electric energy source identification of the target electric energy source, and sends the electric energy source identification to the PLC communication slave station through the load bus; wherein the first scheduling instruction and the second scheduling instruction include the electric energy source identification and time slice information.

[0009] According to an electric energy metering system provided by the present invention, the electric energy metering system also includes an electric energy metering supervision platform; a second electric energy metering unit, used to send electricity usage information to the electric energy metering supervision platform; a first electric energy metering unit, used to send the electrical parameter information of the load bus to the dispatching and control platform; the dispatching and control platform, used to send the electrical parameter information of the load bus to the electric energy metering supervision platform; the electric energy metering supervision platform, used to receive the electricity usage information and the electrical parameter information of the load bus, calibrate the electricity usage information based on the electrical parameter information of the load bus, obtain the calibrated electricity usage information, and visualize the calibrated electricity usage information and electrical parameter information.

[0010] According to an electric energy metering system provided by the present invention, the terminal electric energy metering module also includes an electric carbon meter; the electric carbon meter is used to determine carbon emission information based on electricity consumption information and the carbon footprint factor of the target power source, and send the carbon emission information to the electric energy metering supervision platform.

[0011] According to an electric energy metering system provided by the present invention, it also includes a multi-level distribution module, which includes a multi-level distribution box or a multi-level distribution panel; the multi-source electric energy scheduling module is connected to the multi-level distribution module through a load bus; the multi-level distribution module is used to connect the load bus to the load unit based on the multi-level distribution box or the multi-level distribution panel.

[0012] The present invention also provides an electric energy metering method, using any of the above-mentioned electric energy metering systems, the electric energy metering method includes: based on a first scheduling instruction, selecting and switching to a target power source from different types of power sources, and transmitting the electric energy generated by the target power source to the load unit through the load bus; based on a second scheduling instruction, sending the power source identifier of the target power source to the communication receiving module through the communication sending module; after the communication receiving module receives the power source identifier, determining the target power source based on the power source identifier; measuring and generating the power consumption information of the load unit; the power consumption information includes the power supply information of the target power source; measuring and generating the electrical parameter information of the load bus.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned electric energy metering method is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the electric energy metering method described above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, which implements the above-mentioned electric energy metering method when executed by a processor.

[0016] The electric energy metering system, electric energy metering method, device, storage medium and product provided by the present invention are as follows: different types of power sources of the multi-source electric energy scheduling module are connected to the load unit through the load bus; the load bus is powered by one power source within a time slice; the first electric energy metering unit and the communication sending module are arranged on the load bus; the second electric energy metering unit and the communication receiving module are arranged on the load unit; the multi-source electric energy scheduling module can select and switch to the target power source from different types of power sources according to the first scheduling instruction, and transmit the electric energy generated by the target power source to the load unit through the load bus; when the multi-source electric energy scheduling module switches the target power source, the communication sending module can select and switch to the target power source according to the second scheduling instruction The power source identification of the target power source is determined, and the power source identification is sent to the communication receiving module set in the load unit, so that the communication receiving module can determine the target power source that supplies power to the load unit in the current time slice according to the power source identification, thereby realizing accurate distinction of the power source; at the same time, since the communication receiving module set in the load unit can realize accurate distinction of the power source according to the power source identification, the second electric energy metering unit set in the load unit can accurately distinguish the power supply information of different target power sources when measuring and generating the power consumption information of the load unit, thereby realizing accurate metering of load-side electric energy, which is conducive to accurate billing of different types of power sources and accurate statistics of electrical parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is one of the structural diagrams of the electric energy metering system provided by the present invention.

[0019] Figure 2 This is the second structural diagram of the electric energy metering system provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the electric energy output by the load bus provided by the present invention at different time slices.

[0021] Figure 4 It is a flow chart of the electric energy metering method provided by the present invention.

[0022] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figure 1 , Figure 1 This is one of the structural diagrams of the electric energy metering system provided by the present invention.

[0025] like Figure 1 As shown, in this embodiment, the electric energy metering system includes a multi-source electric energy scheduling module, a bus electric energy metering module, a terminal electric energy metering module and a load unit.

[0026] The multi-source power scheduling module includes at least two types of power sources, and all power sources are uniquely identified in the form of coding, that is, each power source uniquely corresponds to a power source identification.

[0027] For example, Figure 1 The multi-source power scheduling module includes i types of power sources, which are respectively denoted as power source 1 to power source i.

[0028] Optionally, different types of power sources include but are not limited to photovoltaic power sources, wind power sources, hydropower sources, thermal power sources, energy storage power sources, power grids, etc.

[0029] Optionally, there may be multiple power sources of the same type, for example, multiple photovoltaic power sources or wind power sources.

[0030] The busbar electric energy metering module includes a first electric energy metering unit and a communication sending module.

[0031] The terminal electric energy metering module includes a second electric energy metering unit and a communication receiving module.

[0032] The multi-source power dispatching module is connected to the load unit through the load bus. The load bus is powered by one power source within a time slice. The bus power metering module is set on the load bus, and the terminal power metering module is set on the load unit.

[0033] It should be noted that there is at least one load unit, and each load unit is connected to the multi-source power scheduling module via a corresponding load bus. On this basis, each load bus is provided with a bus power metering module, and each load unit is provided with a terminal power metering module.

[0034] For example, Figure 1In the multi-source power dispatching module, the multi-source power dispatching module is connected to n load units through m load buses, where n and m are positive integers.

[0035] In the prior art, when using diversified power sources, power is usually provided to the load unit in a time-slice delivery mode, that is, different types of power sources are switched to provide power to the load unit in different time slices (i.e., time periods).

[0036] For example, when there is sufficient solar energy, the photovoltaic power source is selected to provide power to the load unit; when there is sufficient precipitation, the hydropower source is selected to provide power to the load unit.

[0037] Therefore, the energy metering system will switch to different power sources according to actual conditions at different time slices.

[0038] When the electric energy metering system needs to switch the power source, it can generate a first scheduling instruction and send the first scheduling instruction to the multi-source electric energy scheduling module; the multi-source electric energy scheduling module can respond to the first scheduling instruction, select and switch to the target power source from different types of power sources, and transmit the electric energy generated by the target power source to the load unit through the load bus.

[0039] The target power source is the power source that supplies power to the load unit in the current time slice.

[0040] At the same time, the electric energy metering system can generate a second scheduling instruction and send the second scheduling instruction to the communication sending module set on the load bus; the communication sending module set on the load bus can respond to the second scheduling instruction, determine the power source identifier of the target power source within the current time slice, and send the power source identifier within the current time slice to the communication receiving module set on the load unit.

[0041] The communication receiving module can receive the power source identification and determine the target power source in the current time slice based on the power source identification; at the same time, the second power metering unit set in the load unit can measure and generate the power consumption information of the load unit.

[0042] The power usage information includes power supply information of the target power source.

[0043] It can be understood that when the electric energy metering system switches to different target power sources in different time slices, the power source identification in different time slices can be transmitted between the power supply side and the load side through the communication sending module and the communication receiving module, so that the second electric energy metering unit arranged in the load unit can accurately distinguish the power supply information of different power sources according to the power source identification when measuring the power consumption information of the load unit.

[0044] Optionally, the communication mode between the communication sending module and the communication receiving module may be wired communication or wireless communication.

[0045] For example, the communication between the sending module and the receiving module can be transmitted through wired methods such as optical cables, or through wireless methods such as microwave communication, LoRa, and NB-IoT.

[0046] Optionally, the power usage information of the load unit includes electrical parameter information such as current, voltage, power, etc. of the corresponding circuit, the total power consumed by the load unit, and power supply information of different target power sources in different time slices.

[0047] Among them, the load unit is the smallest unit that needs to measure the consumed electric energy. The unit integrates multiple electrical loads. The rated power of the load unit is the sum of the rated powers of multiple electrical loads. The purpose of the electric energy metering system design is to accurately obtain the total electricity consumption of each load unit based on different power sources.

[0048] When the target power source supplies power to the load unit through the load bus, the first electric energy metering unit provided at the load bus can simultaneously measure and generate electric parameter information of the load bus.

[0049] Optionally, the electrical parameter information of the load bus includes electrical parameter information such as the current current, voltage, power, etc. of the load bus and the accumulated power output by the load bus.

[0050] In the electric energy metering system provided by the present invention, different types of power sources of the multi-source electric energy scheduling module are connected to the load unit through the load bus, the load bus is powered by one power source within a time slice, the first electric energy metering unit and the communication sending module are arranged on the load bus, and the second electric energy metering unit and the communication receiving module are arranged on the load unit; the multi-source electric energy scheduling module can select and switch to the target power source from different types of power sources according to the first scheduling instruction, and transmit the electric energy generated by the target power source to the load unit through the load bus; when the multi-source electric energy scheduling module switches the target power source, the communication sending module can determine the target power source according to the second scheduling instruction. The power source identification is obtained by the user, and the power source identification is sent to the communication receiving module provided in the load unit, so that the communication receiving module can determine the target power source supplying power to the load unit in the current time slice according to the power source identification, thereby realizing accurate distinction of the power sources; at the same time, since the communication receiving module provided in the load unit can realize accurate distinction of the power sources according to the power source identification, the second electric energy metering unit provided in the load unit can accurately distinguish the power supply information of different target power sources when measuring and generating the power consumption information of the load unit, thereby realizing accurate metering of electric energy on the load side, which is conducive to realizing accurate billing of different types of power sources and accurate statistics of electrical parameters.

[0051] In some embodiments, the communication sending module is a PLC communication master station, and the communication receiving module is a PLC communication slave station; the PLC communication master station is used to determine the power source identification of the target power source in response to the second scheduling instruction, and send the power source identification to the PLC communication slave station through the load bus; wherein, the electric energy generated by the target power source carries the power source identification; the PLC communication slave station is used to receive the power source identification through the load bus, and determine the target power source based on the power source identification.

[0052] See also Figure 2 , Figure 2 This is the second structural diagram of the electric energy metering system provided by the present invention.

[0053] like Figure 2 As shown, the electric energy metering system includes a multi-source electric energy scheduling module, multiple bus electric energy metering modules, multiple terminal electric energy metering modules and multiple load units. Each bus electric energy metering module includes a first electric energy metering unit and a PLC communication master station, and each terminal electric energy metering module includes a second electric energy metering unit and a PLC communication slave station.

[0054] Among them, PLC (Power Line Communication) refers to power line communication.

[0055] When the electric energy metering system needs to switch the power source, it can generate a first scheduling instruction and send the first scheduling instruction to the multi-source electric energy scheduling module; the multi-source electric energy scheduling module can respond to the first scheduling instruction, select and switch to the target power source from different types of power sources, and transmit the electric energy generated by the target power source to the load unit through the load bus.

[0056] At the same time, the electric energy metering system can generate a second scheduling instruction and send the second scheduling instruction to the PLC communication master station set on the load bus; the PLC communication master station set on the load bus can respond to the second scheduling instruction, determine the power source identification of the target power source in the current time slice, and send the power source identification in the current time slice to the PLC communication slave station set on the load unit through the load bus.

[0057] The electric energy generated by the target power source carries the power source identification, and the electric energy is transmitted through the load bus, thereby achieving the purpose of transmitting the power source identification by using the load bus.

[0058] Furthermore, the PLC communication slave station provided in the load unit may receive the power source identification via the load bus, and determine the target power source in the current time slice based on the power source identification.

[0059] It should be noted that the PLC communication slave station is used to receive the power source identification sent from the PLC communication master station. The power source identification can be superimposed on the current of the load bus and transmitted using the existing load bus as an information transmission medium. The power source identification carried by the electric energy of the load bus in each discrete time slice is different, so the power source identification can represent the power source that provides power to the load unit in the current time slice.

[0060] The electric energy metering system provided by the present invention introduces PLC communication technology based on data identification, relies on the existing load bus to transmit the power source identification, and does not require additional communication lines, which can save the cost of wired communication carriers and solve the problem of wireless communication signal attenuation caused by the long distance and concealment between the power supply side and the load side; in addition, traditional timestamp-based meter data acquisition can only obtain or query electricity consumption data within a specific time period, but the present invention is combined with PLC communication technology based on data identification, which can be divided according to the power source identification from the time dimension, thereby obtaining electricity consumption data based on a specific power source within a specific time period, and realizing higher-dimensional electric energy metering.

[0061] In some embodiments, it includes a scheduling and control platform; the scheduling and control platform is used to generate a first scheduling instruction and send the first scheduling instruction to the multi-source power scheduling module, so that the multi-source power scheduling module responds to the first scheduling instruction, selects and switches to the target power source from different types of power sources; the scheduling and control platform is used to generate a second scheduling instruction and send the second scheduling instruction to the PLC communication master station, so that the PLC communication master station responds to the second scheduling instruction, determines the power source identification of the target power source, and sends the power source identification to the PLC communication slave station through the load bus; wherein the first scheduling instruction and the second scheduling instruction include the power source identification and time slice information.

[0062] Please continue reading Figure 2 ,like Figure 2 As shown, the electric energy metering system also includes a dispatching and control platform (i.e. Figure 2 The multi-source power time slice aggregation scheduling and control platform in the system can generate various types of scheduling instructions (i.e., scheduling signals) to interact with other modules.

[0063] Specifically, when the energy metering system needs to switch power sources, the dispatching and control platform can generate a first dispatch instruction and send the first dispatch instruction to the multi-source energy dispatch module, so that the multi-source energy dispatch module can select and switch to the target power source from different types of power sources based on the first dispatch instruction. Therefore, the purpose of the first dispatch instruction is to enable the switching selection of multiple power sources and provide the connected load bus with the power output of a single power source.

[0064] Optionally, the multi-source power scheduling module is provided with a multi-source power time slice aggregation scheduling execution unit group, which includes multiple scheduling execution units, each of which has an energy output port, and each energy output port is connected to a load bus. Each scheduling execution unit can receive a first scheduling instruction issued by the scheduling control platform to implement switching selection of different power sources and provide a single power source power output for the connected load bus. By frequently executing the first scheduling instruction, discrete energy time slice aggregation can be achieved, and the power output of the load bus is multi-type aggregated power with time slice as the dimension.

[0065] Furthermore, the scheduling and control platform can generate a second scheduling instruction and send the second scheduling instruction to the PLC communication master station, so that the PLC communication master station determines the power source identifier of the target power source based on the second scheduling instruction and sends the power source identifier to the PLC communication slave station via the load bus. Therefore, the purpose of the second scheduling instruction is to notify the PLC communication master station that the power source providing power to the load bus will be changed by switching the scheduling execution unit of the multi-source power time slice aggregate scheduling execution unit group, so that the PLC communication master station can obtain the changed power source identifier.

[0066] Optionally, when the system is initialized and started, the load bus is powered by the power grid, and the PLC communication master station sends the power source identification to the PLC communication slave station in the terminal power metering module via PLC communication, so that the terminal power metering module equipped with the PLC communication slave station can accurately measure the power consumption of the load unit.

[0067] Among them, both the first scheduling instruction and the second scheduling instruction need to carry the power source identification and time slice information, so that the terminal power metering module can perform fine-grained metering according to the power source identification and time slice information.

[0068] In some embodiments, the electric energy metering system also includes an electric energy metering supervision platform; a second electric energy metering unit, used to send electricity usage information to the electric energy metering supervision platform; a first electric energy metering unit, used to send the electrical parameter information of the load bus to the dispatching and control platform; the dispatching and control platform, used to send the electrical parameter information of the load bus to the electric energy metering supervision platform; the electric energy metering supervision platform, used to receive the electric usage information and the electric parameter information of the load bus, calibrate the electric usage information based on the electric parameter information of the load bus, obtain the calibrated electric usage information, and visualize the calibrated electric usage information and electric parameter information.

[0069] Please continue reading Figure 2 ,like Figure 2As shown, the electric energy metering system also includes an electric energy metering supervision platform. The electric energy metering supervision platform can receive the electricity consumption information collected from the load bus. The electricity consumption information is divided into two parts: one is the information reported by the dispatching and control platform, and the other is the electricity consumption information of the load unit reported by the terminal electric energy metering module. The dispatching and control platform can accurately report the total amount of electricity output of each load bus based on different power sources to the electric energy metering supervision platform. The terminal electric energy metering module can directly report to the electric energy metering supervision platform the total amount of electricity consumed by the load unit based on different power sources, electricity bill information, and carbon metering information. After receiving the electricity consumption information, the electric energy metering system can visualize the electricity data so that users can accurately and efficiently grasp the electricity consumption status of the load unit and the output status of the power source. Based on the electricity consumption information, applications such as precise carbon emission measurement and precise electricity bill measurement can also be expanded on the electric energy metering supervision platform according to user needs.

[0070] Specifically, the terminal energy metering module includes a second energy metering unit and a PLC communication slave station. The second energy metering unit measures the corresponding circuit's electrical parameters, such as current, voltage, and power, as well as the total power consumed by the load unit, as the load unit's power usage information. This information is then sent to the energy metering and monitoring platform.

[0071] Optionally, when the second energy metering unit and the PLC communication slave station function as independent units, they can independently report collected or received information to the energy metering and supervision platform, which then processes and calculates accurate energy information for the current load unit. This accurate energy information includes the total amount of energy consumed by the current load unit for different power sources.

[0072] Optionally, the terminal electricity metering module is provided with a billing meter, which can localize the precise electricity fee measurement in the electricity metering supervision platform based on the second electricity metering unit. On the basis of obtaining precise electricity information, combined with the electricity price policies for different power sources such as photovoltaic power sources, wind power sources, energy storage power sources and power grids, the current electricity fee is calculated in real time to obtain the electricity fee billing results for local presentation and reporting to the electricity metering supervision platform.

[0073] At the same time, the busbar power metering module includes a first power metering unit and a PLC communication master station. A first power metering unit is provided on each load busbar to measure the current current, voltage, power and other electrical parameter information of the load busbar and the accumulated power output of the load busbar, and send these electrical parameter information to the dispatching and control platform.

[0074] Furthermore, the dispatching and control platform can send the electrical parameter information of the load bus collected by the bus power metering module to the power metering supervision platform.

[0075] It should be noted that under normal circumstances, the power consumption information of the load units and the electrical parameter information of the load bus should be consistent. For example, the total power consumption of the load units connected to load bus 1 is consistent with the power supply of load bus 1. If this total power consumption is inconsistent with the power supply, it may indicate that there is a fault in the power metering system module or that the corresponding load bus has significant losses, resulting in inaccurate power consumption information of the load units.

[0076] Based on this, in order to achieve the purpose of accurately measuring the power consumption on the load side, the power metering and supervision platform needs to calibrate the power consumption information of the load unit based on the electrical parameter information of the load bus after receiving the power consumption information of the load unit and the electrical parameter information of the load bus, obtain the calibrated power consumption information, and visualize the calibrated power consumption information and electrical parameter information.

[0077] In some embodiments, the terminal electricity metering module also includes an electricity carbon meter; the electricity carbon meter is used to determine carbon emission information based on electricity consumption information and the carbon footprint factor of the target power source, and send the carbon emission information to the electricity metering supervision platform.

[0078] Optionally, the terminal electricity metering module also includes an electricity carbon meter, which localizes the carbon metering in the electricity metering supervision platform based on the second electricity metering unit, and on the basis of obtaining accurate electricity information, combines the carbon footprint factors for different power sources such as photovoltaic power sources, wind power sources, energy storage power sources and power grids to measure the carbon emissions generated by the current load unit consuming the electricity of the target power source, obtains real-time carbon emission information, and uses the carbon emission information for local presentation and reporting to the electricity metering supervision platform.

[0079] In some embodiments, a multi-level power distribution module is also included, which includes a multi-level distribution box or a multi-level distribution panel; the multi-source power scheduling module is connected to the multi-level power distribution module through a load bus; the multi-level power distribution module is used to connect the load bus to the load unit based on the multi-level distribution box or the multi-level distribution panel.

[0080] The electric energy metering system also includes a multi-level distribution module, which includes a multi-level distribution box or a multi-level distribution panel. Each level of distribution box or distribution panel can expand multiple circuits to the next level. Each load bus can be expanded from the first level distribution box or distribution panel, and finally the circuit is expanded to the load unit.

[0081] Optionally, each load bus can be connected to multiple load units in parallel.

[0082] The electric energy metering system provided by the present invention adopts a multi-source power source on the power supply side and combines it with a time-slice-based power source switching scheduling technology, and at the same time combines it with a data identification-based PLC communication technology and a timestamp-based meter data acquisition technology to achieve accurate load-side electric energy measurement in a diversified power supply system. The electric energy consumed by each load unit can be refined to the amount of electricity provided by each power source. This refined electric energy data information can facilitate more accurate measurement of data such as electricity charges and carbon emissions.

[0083] For ease of understanding, here we use Figure 2 Taking the electric energy metering system of FIG. 1 as an example, the processing flow of each module of the electric energy metering system in the present invention is introduced.

[0084] like Figure 2 As shown, the electric energy metering system includes a multi-source electric energy dispatching module on the power supply side, a dispatching control platform, an electric energy metering supervision platform, a busbar electric energy metering module, a terminal electric energy metering module, a multi-level distribution module and a load unit.

[0085] Assume that the multi-source power scheduling module includes four power sources and a multi-source power time slice aggregation scheduling execution unit group, where the power sources include photovoltaic power source No. 1, photovoltaic power source No. 2, wind power source and power grid. All power sources are uniquely identified in the form of coding, that is, each power source uniquely corresponds to a power source identifier, as shown in Table 1.

[0086] Table 1

[0087] As can be seen from Table 1, the power source identifier corresponding to each power source can be represented by a single number. Since the number of power sources in this embodiment is relatively small, the power source identifier can be represented by only one byte in the power metering system. In a diversified power supply system, 256 power source identifiers are sufficient.

[0088] The four power sources connect the electric energy to the load bus through the multi-source electric energy time slice aggregation scheduling execution unit group. Assuming that the multi-source electric energy scheduling module has a total of L load buses, each load bus can be provided with electric energy by 4 power sources through the multi-source electric energy time slice aggregation scheduling execution unit group. The scheduling and control platform can issue corresponding scheduling instructions to realize the flexible connection between the power source and the load bus. One load bus can only be provided with electric energy by one power source in a single time slice, and one power source can provide electric energy to multiple load buses in a single time slice.

[0089] See also Figure 3 , Figure 3 It is a schematic diagram of the electric energy output by the load bus provided by the present invention at different time slices.

[0090] The electric energy output by load bus 1 in different time slices is as follows: Figure 3 As shown, after photovoltaic power source No. 1 outputs electricity in the first time slice, the wind power source continues to provide electricity to load bus 1 in the second time slice through the scheduling switching of the multi-source electricity time slice aggregation scheduling execution unit group. This continues to form a mode of multi-source discrete electricity time slice aggregation of the load bus to provide electricity to the load unit.

[0091] Optionally, different time slices may last for different periods of time.

[0092] A busbar power metering module includes a first power metering unit and a PLC communication master station. A busbar power metering module needs to be set up on each load bus to measure the current current, voltage, power and other electrical parameter information of the load bus and the accumulated power output of the load bus, and report this information to the dispatching and control platform, such as the power metering unit A on load bus 1.

[0093] A PLC communication master station needs to be set up on each load bus, such as PLC communication master station A on load bus 1. PLC communication master station A can receive the second dispatching instruction sent by the dispatching and control platform. PLC communication master station A obtains the changed power source identification through the second dispatching instruction.

[0094] A terminal energy metering module includes a second energy metering unit and a PLC communication slave station. The PLC communication master station aggregates energy and information flows on the load bus side in a time-sliced manner and transmits the power source identifier to the PLC communication slave station in the terminal energy metering module via PLC communication. This allows the terminal energy metering module equipped with the PLC communication slave station to measure the energy consumption of the load unit using the second energy metering unit.

[0095] Optionally, the PLC communication master station can also be integrated into the first electric energy metering unit, and the two modules are merged into a whole, but they still have independent functions, such as the electric energy metering unit B and the PLC master station unit B on the load bus 2.

[0096] The multi-level distribution module includes a multi-level distribution box or a multi-level distribution panel. Each level of distribution box or distribution panel can expand the circuit to the next level. Each load bus can be expanded from the first level distribution box or distribution panel, and finally the circuit is expanded to the load unit.

[0097] Optionally, each load busbar may be connected in parallel to multiple load units, and the specific power distribution level may be determined according to the power demand of the load units in the diversified power supply system.

[0098] Optionally, the terminal electric energy metering module includes multiple types of metering units, and suitable metering units can be selected and used in combination according to different needs, such as a second electric energy metering unit, a PLC communication slave station, a billing meter and an electric carbon meter.

[0099] For example, load unit 1 is connected to a second energy metering unit C and a PLC communication slave station A, load bus 2 is connected to a second energy metering unit D (with a built-in PLC communication slave station B), load unit N-1 is connected to a billing meter (with a built-in PLC communication slave station C), and load unit N is connected to an electric carbon meter (with a built-in PLC communication slave station D). Second energy metering unit C is used to measure the current, voltage, power, and other electrical parameters connected to load unit 1, as well as the total power consumed by that load unit. PLC communication slave station A is used to receive the power source identification transmitted from the PLC communication master station on load bus 1. This power source identification information is superimposed on the current and transmitted using the existing load bus as the information transmission medium. The power source identification carried by the electric energy in each discrete time slice is different. This power source identification represents the power source providing energy to the load unit in the current time slice.

[0100] When the second electric energy metering unit and the PLC communication slave station are used as independent units, they can report the collected or received information to the electric energy precise metering supervision platform separately, and the supervision platform will perform calculations and processing to obtain the precise electric energy information consumed by the current load unit.

[0101] The PLC slave unit can also be embedded in the power metering unit to form a whole unit, such as the power metering unit D (with PLC slave B embedded), which localizes the operation processing, calculates the precise power consumption of the current load unit, and reports it to the power metering supervision platform.

[0102] Examples of precise power information are shown in Tables 2 and 3. Table 2 is an example of the total amount of power consumed by the current load unit for different power sources, and Table 3 is an example of the amount of power consumed by the current load unit when power is provided by different power sources. These power information are dynamically updated based on time.

[0103] Table 2

[0104] Table 3

[0105] Based on accurate energy information, the billing meter localizes the electricity cost measurement within the energy metering and supervision platform. Incorporating local pricing policies for different power sources, such as photovoltaic power, wind power, and the grid, the meter calculates the current electricity cost in real time, producing billing results for local presentation and reporting to the energy metering and supervision platform.

[0106] Based on the second electricity metering unit, the electricity carbon meter localizes the carbon measurement in the electricity metering supervision platform. On the basis of obtaining accurate electricity information, it combines the carbon footprint factors for different power sources such as photovoltaic power sources, wind power sources and power grids to measure the carbon emissions generated by the current load unit's consumption of electricity, obtain real-time carbon emission information, and use the carbon emission information for local presentation and reporting to the electricity metering supervision platform.

[0107] It should be noted that among the various types of metering units contained in the terminal electric energy metering module, the electric energy metering unit and the PLC communication slave station are the most basic units, and are the minimum requirements for the units required in each circuit connected to the load unit. If the electric energy metering needs to be localized, the electric energy metering unit embedded in the PLC communication slave station can be selected. If the electricity fee metering needs to be localized, the billing meter can be selected. If the carbon metering needs to be localized, the electricity-carbon meter can be selected.

[0108] Among them, the load unit is the minimum set of electrical loads that need to be measured for electrical energy consumption. The purpose of designing the energy metering system is to accurately obtain the total electricity consumption of each load unit based on different power sources.

[0109] The dispatching and control platform uses various types of dispatching instructions to interact with other modules. The dispatching and control platform provides a first dispatching instruction to the multi-source power dispatching module, which implements the switching selection of four power sources, providing a single power source's power output to the connected load bus. The dispatching and control platform also provides a second dispatching instruction to the PLC communication master station, notifying the PLC communication master station that the power source providing power to the load bus will be changed based on the multi-source power dispatching module's switching selection, so that the PLC communication master station can obtain the changed power source's identity. The first energy metering unit of the bus power metering module reports metering data to the dispatching and control platform, including the accumulated power output of the load bus. Based on the multi-source power dispatching instructions it generates, the dispatching and control platform obtains the power source identity of each load bus's power output in each time slot. Based on the power source identity, the dispatching and control platform calculates the total power output of each load bus from different power sources and the time-based power information provided by each load bus from different power sources. The dispatching and control platform then reports this power information to the power metering and supervision platform.

[0110] The electric energy metering and supervision platform can receive the electricity consumption information collected from the load bus. The electricity consumption information is divided into two parts: one is the information reported by the dispatching and control platform, and the other is the electricity consumption information of the load unit reported by the terminal electric energy metering module. The dispatching and control platform can accurately report the total amount of electricity output of each load bus based on different power sources to the electric energy metering and supervision platform. The terminal electric energy metering module can directly report to the electric energy metering and supervision platform the information including the total amount of electricity consumed by the load unit based on different power sources, electricity bill information and carbon metering information. After receiving the electricity consumption information, the electric energy metering system can visualize the electricity data so that users can accurately and efficiently grasp the electricity consumption status of the load unit and the output status of the power source. Based on the electricity consumption information, applications such as precise carbon emission metering and precise electricity bill metering can also be expanded on the electric energy metering and supervision platform according to user needs.

[0111] For example, electric energy calibration is performed based on the power source dimension, that is, the sum of the electric energy of a power source consumed by each load unit is less than the electric energy provided by the power source measured on the load bus side. Taking into account some power loss in the distribution line, this is used as a reference to judge the accuracy of the electric energy information reported by the terminal power metering module on the load unit side.

[0112] It should be noted that the meter data from the busbar and terminal energy metering modules is timestamped to identify the specific time the data was recorded. This timestamp allows for querying electricity usage data within a specific time slice. The power source identifiers transmitted between the PLC communication master and slave stations also carry timestamps. Combined with the meter data from the terminal energy metering modules, the accumulated meter data can be segmented using different power source identifiers to determine the amount of energy provided by a specific power source to a load unit within a specific time slice.

[0113] The present invention also provides an electric energy metering method. Figure 4 , Figure 4 : is a flow chart of the electric energy metering method provided by the present invention. In this embodiment, the electric energy metering method is applied to any of the above-mentioned electric energy metering systems, and the electric energy metering method includes steps S410 to S440, each of which is specifically as follows: S410: Based on the first scheduling instruction, select and switch to a target power source from different types of power sources, and transmit the electric energy generated by the target power source to the load unit through the load bus.

[0114] S420: Based on the second scheduling instruction, the power source identifier of the target power source is sent to the communication receiving module through the communication sending module.

[0115] S430: After the communication receiving module receives the power source identifier, the target power source is determined based on the power source identifier.

[0116] S440: Measure and generate power usage information of the load unit; the power usage information includes power supply information of the target power source.

[0117] S450: Measure and generate electrical parameter information of the load bus.

[0118] The present invention also provides an electronic device. Figure 5 Schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other via the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the electric energy metering method.

[0119] Furthermore, the logic instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0120] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned electric energy metering method when executed by a processor.

[0121] The present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the above-mentioned electric energy metering method.

[0122] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0123] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electric energy metering system, characterized in that: include: A multi-source power dispatching module, a bus power metering module, a terminal power metering module and a load unit, wherein the multi-source power dispatching module includes at least two types of power sources, the bus power metering module includes a first power metering unit and a communication sending module, and the terminal power metering module includes a second power metering unit and a communication receiving module. The multi-source power dispatching module is connected to the load unit via a load bus, and the load bus is powered by one of the power sources within a time slice. The bus power metering module is arranged on the load bus, and the terminal power metering module is arranged on the load unit; The multi-source power scheduling module is configured to select and switch to a target power source from the different types of power sources in response to a first scheduling instruction, and transmit the power generated by the target power source to the load unit via the load bus; the target power source is the power source that supplies power to the load unit in the current time slice; The communication sending module is configured to determine the power source identifier of the target power source in response to the second scheduling instruction, and send the power source identifier to the communication receiving module; The communication receiving module is configured to receive the power source identifier and determine the target power source based on the power source identifier; The second electric energy metering unit is used to measure and generate the power consumption information of the load unit; the power consumption information includes the power supply information of the target power source; The first electric energy metering unit is used to measure and generate electric parameter information of the load bus.

2. The electric energy metering system according to claim 1, characterized in that: The communication sending module is a PLC communication master station, and the communication receiving module is a PLC communication slave station; The PLC communication master station is configured to determine, in response to the second scheduling instruction, a power source identifier of the target power source and transmit the power source identifier to the PLC communication slave station via the load bus; wherein the electric energy generated by the target power source carries the power source identifier; The PLC communication slave station is configured to receive the power source identifier through the load bus and determine the target power source based on the power source identifier.

3. The electric energy metering system according to claim 2, characterized in that: It also includes a scheduling and control platform; The scheduling control platform is configured to generate the first scheduling instruction and send the first scheduling instruction to the multi-source power scheduling module, so that the multi-source power scheduling module selects and switches to the target power source from the different types of power sources in response to the first scheduling instruction; The scheduling control platform is configured to generate the second scheduling instruction and send the second scheduling instruction to the PLC communication master station, so that the PLC communication master station determines the power source identifier of the target power source in response to the second scheduling instruction, and sends the power source identifier to the PLC communication slave station via the load bus; The first scheduling instruction and the second scheduling instruction include the power source identifier and time slice information.

4. The electric energy metering system according to claim 3, characterized in that: The electric energy metering system also includes an electric energy metering supervision platform; The second electric energy metering unit is used to send the electricity usage information to the electric energy metering supervision platform; The first electric energy metering unit is used to send the electric parameter information of the load bus to the dispatching and control platform; The dispatching and control platform is used to send the electrical parameter information of the load bus to the electric energy metering and supervision platform; The electric energy metering and supervision platform is used to receive the electric energy usage information and the electric parameter information of the load bus, calibrate the electric energy usage information based on the electric parameter information of the load bus, obtain the calibrated electric energy usage information, and visualize the calibrated electric energy usage information and the electric parameter information.

5. The electric energy metering system according to claim 4, characterized in that: The terminal electric energy metering module also includes an electric carbon meter; The electricity carbon meter is used to determine carbon emission information based on the electricity usage information and the carbon footprint factor of the target power source, and send the carbon emission information to the electricity metering and supervision platform.

6. The electric energy metering system according to claim 1, characterized in that: It also includes a multi-level power distribution module, which includes a multi-level distribution box or a multi-level distribution panel; The multi-source power dispatching module is connected to the multi-stage power distribution module via the load bus; The multi-level power distribution module is used to connect the load busbar to the load unit based on the multi-level distribution box or the multi-level distribution board.

7. A method for measuring electric energy, characterized in that: Using the electric energy metering system according to any one of claims 1 to 6, the electric energy metering method comprises: Based on the first scheduling instruction, selecting and switching to a target power source from different types of power sources, and transmitting the electric energy generated by the target power source to the load unit through the load bus; Based on the second scheduling instruction, the power source identifier of the target power source is sent to the communication receiving module through the communication sending module; After the communication receiving module receives the power source identifier, determining the target power source based on the power source identifier; Measuring and generating power usage information of the load unit; the power usage information includes power supply information of the target power source; Measuring and generating electrical parameter information of the load bus.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the electric energy metering method according to claim 7 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the electric energy metering method according to claim 7 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the electric energy metering method according to claim 7 is implemented.

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