Electric energy metering error monitoring method based on transformer area terminal

Abstract

The invention provides an electric energy metering error monitoring method based on a transformer area terminal, belongs to the technical field of Internet of Things, and is used for realizing clustered electric energy metering error detection and correction through the transformer area terminal. The method is applied to a transformer area terminal, and the method comprises the following steps: in response to the transformer area terminal to charge an electric energy test device, the transformer area terminal obtains N electric energy metering values obtained by metering the electric energy test device by N electric energy metering terminals, and N is an integer greater than or equal to 1; the station area terminal determines respective electric energy metering errors of the N electric energy meters according to an electric energy charging value of charging the electric energy test equipment by the station area terminal and the N electric energy metering values; and the station area terminal corrects the respective electric energy metering of the M electric energy metering terminals according to the respective electric energy metering errors of the N electric energy metering terminals, the M electric energy metering terminals comprise N electric energy metering terminals, and M is an integer greater than N.

Description

Technical Field

[0001] The present invention relates to the technical field of Internet of Things, and in particular to an electric energy metering error monitoring method based on a transformer terminal. Background Art

[0002] The substation terminal is a device located at the end of the power distribution network, responsible for data collection, processing and transmission. The application scenarios of the substation terminal may include the following aspects: Real-time monitoring and fault detection: The substation terminal can monitor the equipment operation status by continuously collecting and analyzing power data, and detect abnormal conditions in time, so as to detect and diagnose faults. Preventive maintenance: By analyzing the trend of power data, the substation terminal can predict potential equipment failures, help preventive maintenance, and reduce downtime and maintenance costs. Power consumption behavior supervision: In the case of increased urban and rural power consumption, the substation terminal can help power grid companies monitor users' power consumption behavior, reduce line losses, and ensure the stability and effectiveness of power supply. Intelligent management system: As part of the smart power consumption monitoring system, the substation terminal can cooperate with other intelligent devices (such as intelligent circuit breakers) to achieve all-weather monitoring and management of power consumption through big data and cloud computing technology. Anti-electricity theft inspection: Using big data analysis, the substation terminal can more effectively detect and prevent electricity theft and improve the accuracy of power metering. Detection in special environments: Under certain specific conditions (such as high temperature, high humidity or electromagnetic interference), the substation terminal can use advanced detection technology (such as infrared imaging, ultraviolet imaging) to conduct detailed inspections on the equipment to ensure that faults can be effectively identified and located even in complex environments.

[0003] At present, it is hoped that the substation terminals can be enabled for more application scenarios, such as error detection and correction in electricity metering. How to achieve this specifically is a current research issue. Summary of the invention

[0004] The embodiment of the present invention provides an electric energy metering error monitoring method based on a substation terminal, which is used to realize clustered electric energy metering error detection and correction through the substation terminal.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: In a first aspect, a method for monitoring electric energy metering errors based on a substation terminal is applied to a substation terminal, and the method includes: in response to the substation terminal charging an electric energy test device, the substation terminal obtains electric energy metering values ​​obtained by N electric energy metering terminals respectively measuring the electric energy test device, a total of N electric energy metering values, N being an integer greater than or equal to 1; the substation terminal determines the electric energy metering errors of the N electric energy meters according to the electric energy charging values ​​of the electric energy test device charged by the substation terminal, and the N electric energy metering values; the substation terminal corrects the electric energy metering of M electric energy metering terminals according to the electric energy metering errors of the N electric energy meters, the M electric energy metering terminals including N electric energy metering terminals, and M being an integer greater than N.

[0006] Optionally, any one of the M electric energy metering terminals is connected to the electric energy testing equipment; in response to the substation terminal charging the electric energy testing equipment, the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, including: in response to the substation terminal having completed charging of the electric energy testing equipment, the substation terminal selects N electric energy metering terminals that meet the topological conditions from the M electric energy metering terminals, and the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, a total of N electric energy metering values.

[0007] Optionally, the substation terminal selects N electric energy metering terminals that meet the topological conditions from M electric energy metering terminals, including: the substation terminal selects N electric energy metering terminals that are connected to at least two electric energy metering terminals from the M electric energy metering terminals according to a preset topological selection condition and the topological connection relationship of the M electric energy metering terminals, and the topological selection condition indicates that the selected terminal needs to be connected to at least two other terminals.

[0008] Optionally, the substation terminal obtains from N electric energy metering terminals electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring an electric energy test device, a total of N electric energy metering values, including: the substation terminal sends a first message to each of the N electric energy metering terminals, the first message including the following multiple information: an identifier of the electric energy test device, a time period for charging the electric energy test device, or an electric energy metering acquisition request, the electric energy metering acquisition request acquires the electric energy metering value of the charged device, and the multiple information are used to jointly indicate that the device receiving the first message needs to provide the electric energy metering value of the electric energy test device within the time period; the substation terminal receives a second message returned by each of the N electric energy metering terminals based on the first message, a total of N second messages, each of the N second messages including: an electric energy metering terminal corresponding to the N electric energy metering terminals measures the electric energy test device within the time period, and the electric energy metering value obtained; the substation terminal determines a total of N electric energy metering values ​​from the N second messages.

[0009] Optionally, the substation terminal determines the electric energy metering errors of N electric energy meters based on the electric energy charging value used by the substation terminal to charge the electric energy testing equipment and the N electric energy metering values, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, and the difference #i is the electric energy metering error value of the i-th electric energy metering terminal; the substation terminal determines the electric energy metering error change rate of the i-th electric energy metering terminal based on the electric energy metering error value of the i-th electric energy metering terminal and the time period.

[0010] Optionally, the electric energy charging value is the electric energy charging value locally recorded by the substation terminal during the process of charging the electric energy testing equipment by the substation terminal, and the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among N electric energy metering values, including: the substation terminal subtracts a preset charging loss value from the electric energy charging value to obtain a corrected electric energy charging value; the substation terminal determines the difference #i between the corrected electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal.

[0011] Optionally, the substation terminal corrects the electric energy measurement of each of the M electric energy metering terminals according to the electric energy metering errors of each of the N electric energy metering terminals, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the i-th electric energy metering terminal and at least two electric energy metering terminals connected to the i-th electric energy metering terminal as the i-th electric energy metering terminal group, and when i is traversed from 1 to N, a total of N electric energy metering terminal groups are determined; for the N electric energy metering terminals For the i-th electric energy metering terminal group in the terminal group, the substation terminal sends an electric energy metering error #i to the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that the i-th electric energy metering terminal sends the electric energy metering error #i to all other electric energy metering terminals except the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that each electric energy metering terminal in the i-th electric energy metering terminal group performs electric energy metering correction, and the electric energy metering error #i is the electric energy metering error of the i-th electric energy metering terminal.

[0012] Optionally, the electric energy metering error #i is the electric energy metering error change rate #i, and for a target electric energy metering terminal among the M electric energy metering terminals, the target electric energy metering terminal is any one of the M electric energy metering terminals; the target electric energy metering terminal is configured as follows: if the target electric energy metering terminal receives a first electric energy metering error change rate, the target electric energy metering terminal multiplies the first electric energy metering error change rate by a first time length to obtain a first electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current time t1 with the first electric energy metering error value to obtain a correction value, and the first time length is the time length between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when the electric energy metering was started; Alternatively, if the target electric energy metering terminal receives multiple electric energy metering error change rates, the target electric energy metering terminal determines whether the difference between the maximum value and the minimum value of the multiple electric energy metering error change rates is greater than a preset difference threshold; if it is greater than the preset difference threshold, the target electric energy metering terminal determines the average of the multiple electric energy metering error change rates as the target electric energy metering error change rate; otherwise, the minimum value of the multiple electric energy metering error change rates is determined as the target electric energy metering error change rate; on this basis, the target electric energy metering terminal multiplies the target electric energy metering error change rate by the first time length to obtain the target electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current moment on the target electric energy metering error value to obtain a corrected value.

[0013] Optionally, the substation terminal charges the electric energy test equipment, including: the substation terminal divides the time period into K sub-time periods according to the length of the time period in which the electric energy test equipment needs to be charged, and the length of each sub-time period in the K sub-time periods is random; for the first sub-time period in the K sub-time periods, the substation terminal randomly determines a first charging power value from a preset first charging power interval, and charges the electric energy test equipment with the first charging power value in the first sub-time period; then, for the second sub-time period in the K sub-time periods, , the station terminal randomly determines a second charging power value from a preset second charging power interval, and charges the electric energy test equipment with the second charging power value in the second sub-time period, and the first charging power interval partially overlaps with the second charging power interval; thereafter, for the third sub-time period among the K sub-time periods, the station terminal randomly determines a third charging power value from the first charging power interval, and charges the electric energy test equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the Kth sub-time period.

[0014] In a second aspect, a power metering error monitoring system based on a substation terminal is provided, the system includes a substation terminal, and the substation terminal is configured as follows: in response to the substation terminal charging the power test equipment, the substation terminal obtains the power metering values ​​obtained by N power metering terminals respectively measuring the power test equipment, a total of N power metering values, N is an integer greater than or equal to 1; the substation terminal determines the power metering errors of the N power meters according to the power charging values ​​of the power test equipment charged by the substation terminal and the N power metering values; the substation terminal corrects the power metering values ​​of M power metering terminals according to the power metering errors of the N power meters, the M power metering terminals include N power metering terminals, and M is an integer greater than N.

[0015] Optionally, any one of the M electric energy metering terminals is connected to the electric energy testing equipment; in response to the substation terminal charging the electric energy testing equipment, the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, including: in response to the substation terminal having completed charging of the electric energy testing equipment, the substation terminal selects N electric energy metering terminals that meet the topological conditions from the M electric energy metering terminals, and the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, a total of N electric energy metering values.

[0016] Optionally, the substation terminal selects N electric energy metering terminals that meet the topological conditions from M electric energy metering terminals, including: the substation terminal selects N electric energy metering terminals that are connected to at least two electric energy metering terminals from the M electric energy metering terminals according to a preset topological selection condition and the topological connection relationship of the M electric energy metering terminals, and the topological selection condition indicates that the selected terminal needs to be connected to at least two other terminals.

[0017] Optionally, the substation terminal obtains from N electric energy metering terminals electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring an electric energy test device, a total of N electric energy metering values, including: the substation terminal sends a first message to each of the N electric energy metering terminals, the first message including the following multiple information: an identifier of the electric energy test device, a time period for charging the electric energy test device, or an electric energy metering acquisition request, the electric energy metering acquisition request acquires the electric energy metering value of the charged device, and the multiple information are used to jointly indicate that the device receiving the first message needs to provide the electric energy metering value of the electric energy test device within the time period; the substation terminal receives a second message returned by each of the N electric energy metering terminals based on the first message, a total of N second messages, each of the N second messages including: an electric energy metering terminal corresponding to the N electric energy metering terminals measures the electric energy test device within the time period, and the electric energy metering value obtained; the substation terminal determines a total of N electric energy metering values ​​from the N second messages.

[0018] Optionally, the substation terminal determines the electric energy metering errors of N electric energy meters based on the electric energy charging value used by the substation terminal to charge the electric energy testing equipment and the N electric energy metering values, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, and the difference #i is the electric energy metering error value of the i-th electric energy metering terminal; the substation terminal determines the electric energy metering error change rate of the i-th electric energy metering terminal based on the electric energy metering error value of the i-th electric energy metering terminal and the time period.

[0019] Optionally, the electric energy charging value is the electric energy charging value locally recorded by the substation terminal during the process of charging the electric energy testing equipment by the substation terminal, and the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among N electric energy metering values, including: the substation terminal subtracts a preset charging loss value from the electric energy charging value to obtain a corrected electric energy charging value; the substation terminal determines the difference #i between the corrected electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal.

[0020] Optionally, the substation terminal corrects the electric energy measurement of each of the M electric energy metering terminals according to the electric energy metering errors of each of the N electric energy metering terminals, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the i-th electric energy metering terminal and at least two electric energy metering terminals connected to the i-th electric energy metering terminal as the i-th electric energy metering terminal group, and when i is traversed from 1 to N, a total of N electric energy metering terminal groups are determined; for the N electric energy metering terminals For the i-th electric energy metering terminal group in the terminal group, the substation terminal sends an electric energy metering error #i to the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that the i-th electric energy metering terminal sends the electric energy metering error #i to all other electric energy metering terminals except the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that each electric energy metering terminal in the i-th electric energy metering terminal group performs electric energy metering correction, and the electric energy metering error #i is the electric energy metering error of the i-th electric energy metering terminal.

[0021] Optionally, the electric energy metering error #i is the electric energy metering error change rate #i, and for a target electric energy metering terminal among the M electric energy metering terminals, the target electric energy metering terminal is any one of the M electric energy metering terminals; the target electric energy metering terminal is configured as follows: if the target electric energy metering terminal receives a first electric energy metering error change rate, the target electric energy metering terminal multiplies the first electric energy metering error change rate by a first time length to obtain a first electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current time t1 with the first electric energy metering error value to obtain a correction value, and the first time length is the time length between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when the electric energy metering was started; Alternatively, if the target electric energy metering terminal receives multiple electric energy metering error change rates, the target electric energy metering terminal determines whether the difference between the maximum value and the minimum value of the multiple electric energy metering error change rates is greater than a preset difference threshold; if it is greater than the preset difference threshold, the target electric energy metering terminal determines the average of the multiple electric energy metering error change rates as the target electric energy metering error change rate; otherwise, the minimum value of the multiple electric energy metering error change rates is determined as the target electric energy metering error change rate; on this basis, the target electric energy metering terminal multiplies the target electric energy metering error change rate by the first time length to obtain the target electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current moment on the target electric energy metering error value to obtain a corrected value.

[0022] Optionally, the substation terminal charges the electric energy test equipment, including: the substation terminal divides the time period into K sub-time periods according to the length of the time period in which the electric energy test equipment needs to be charged, and the length of each sub-time period in the K sub-time periods is random; for the first sub-time period in the K sub-time periods, the substation terminal randomly determines a first charging power value from a preset first charging power interval, and charges the electric energy test equipment with the first charging power value in the first sub-time period; then, for the second sub-time period in the K sub-time periods, , the station terminal randomly determines a second charging power value from a preset second charging power interval, and charges the electric energy test equipment with the second charging power value in the second sub-time period, and the first charging power interval partially overlaps with the second charging power interval; thereafter, for the third sub-time period among the K sub-time periods, the station terminal randomly determines a third charging power value from the first charging power interval, and charges the electric energy test equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the Kth sub-time period.

[0023] In a third aspect, an electronic device is provided, comprising: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the electronic device executes the method described in the first aspect.

[0024] In a possible design solution, the electronic device described in the third aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the electronic device described in the third aspect to communicate with other electronic devices.

[0025] In an embodiment of the present invention, the electronic device described in the third aspect may be a terminal, or a chip (system) or other parts or components that may be arranged in the terminal, or a system including the terminal.

[0026] In a fourth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are executed on a computer, the computer is caused to execute the method described in the first aspect.

[0027] In summary, in response to the substation terminal charging the electric energy testing equipment, the substation terminal can obtain the electric energy metering values ​​obtained by N electric energy metering terminals respectively measuring the electric energy testing equipment, a total of N electric energy metering values. In this way, the substation terminal can determine the electric energy metering errors of the N electric energy meters according to the electric energy charging values ​​used by the substation terminal to charge the electric energy testing equipment and the N electric energy metering values, and then use the electric energy metering errors of the N electric energy meters to correct the electric energy metering of more M electric energy metering terminals, thereby realizing clustered electric energy metering error detection and correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the architecture of an Internet of Things system provided by an embodiment of the present invention; Figure 2 A schematic diagram of a flow chart of an electric energy metering error monitoring method based on a substation terminal provided in an embodiment of the present invention; Figure 3 A schematic diagram of the topological connection relationship in the electric energy metering error monitoring method based on the substation terminal provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described below in conjunction with the accompanying drawings.

[0030] In the embodiment of the present invention, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0031] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present invention does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present invention should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0032] It should be understood that the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiment of the present invention. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0033] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present invention do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or an electronic device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or an electronic device. The type of memory can be any form of storage medium, which is not limited by the embodiments of the present invention.

[0034] The "protocol" involved in the embodiments of the present invention may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol applied in future systems, and the embodiments of the present invention do not specifically limit this.

[0035] In the embodiments of the present invention, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances, but do not limit the time, nor do they require the device to perform judgment actions when implementing, nor do they mean the existence of other limitations.

[0036] In the description of the embodiments of the present invention, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present invention is only a kind of association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the embodiments of the present invention, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present invention, in the embodiments of the present invention, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. At the same time, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0037] The network architecture and business scenarios described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

[0038] To facilitate understanding of the embodiments of the present invention, first Figure 1 Taking the Internet of Things system shown in as an example, Figure 1 A schematic diagram of the architecture of an Internet of Things system applicable to the electric energy metering error monitoring method based on the substation terminal provided in an embodiment of the present invention.

[0039] like Figure 1 As shown, the Internet of Things system may include: an area terminal, electric energy testing equipment and an electric energy metering terminal.

[0040] The above-mentioned area terminal, electric energy test equipment and electric energy metering terminal can all be terminal-shaped devices, that is, terminals. The terminal can be a terminal with transceiver functions, or a chip or chip system that can be set in the terminal. The terminal can also be called user equipment (UE), access terminal, subscriber unit, user station, mobile station (MS), mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device. The terminal in the embodiments of the present application can be a mobile phone, a cellular phone, a smart phone, a tablet computer, a wireless data card, a personal digital assistant (PDA), a wireless modem, a handset, a laptop computer, a machine type communication (MTC) terminal, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle-mounted terminal, a road side unit (RSU) with terminal function, etc. The terminal of the present application may also be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units. Alternatively, the terminal may also be customer-premises equipment (CPE).

[0041] Figure 2 A flow chart of a method provided by an embodiment of the present invention. The electric energy metering error monitoring method based on the substation terminal is applicable to the above-mentioned Internet of Things system, and involves the interaction between devices in the above-mentioned Internet of Things system. The specific process is as follows: S201, in response to the substation terminal charging the electric energy test equipment, the substation terminal obtains the electric energy metering values ​​obtained by N electric energy metering terminals respectively metering the electric energy test equipment, a total of N electric energy metering values, where N is an integer greater than or equal to 1.

[0042] Among them, any of the M electric energy metering terminals is connected to the electric energy testing equipment, that is, the electric energy testing equipment can be measured. In response to the completion of the charging of the electric energy testing equipment by the substation terminal, the substation terminal can select N electric energy metering terminals that meet the topological conditions from the M electric energy metering terminals. For example, the substation terminal can select N electric energy metering terminals that are connected to at least two electric energy metering terminals from the M electric energy metering terminals according to the preset topological selection conditions and the topological connection relationship of the M electric energy metering terminals, and the topological selection conditions indicate that the selected terminal needs to be connected to at least two other terminals. The advantage of this is that the N electric energy metering terminals are terminals with multi-node communication capabilities, so that error correction of the entire network can be achieved through the interaction between these N electric energy metering terminals and other terminals. Exemplary, such as Figure 3 As shown, the M electric energy metering terminals include electric energy metering terminals A to electric energy metering terminal G, and the N electric energy metering terminals specifically include electric energy metering terminal A, electric energy metering terminal D, electric energy metering terminal G, and electric energy metering terminal E. The substation terminal can obtain the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy test equipment from the N electric energy metering terminals, a total of N electric energy metering values. For example, the substation terminal sends a first message to each of the N electric energy metering terminals, and the first message may include the following multiple information: the identification of the electric energy test equipment, the time period for the electric energy test equipment to be charged, or the electric energy metering acquisition request, the electric energy metering acquisition request obtains the electric energy metering value of the charged device, and these multiple information can be used to jointly indicate that the device receiving the first message needs to provide the electric energy metering value of the electric energy test equipment within the time period; in this way, in the process of the substation terminal charging the electric energy test equipment, the N electric energy metering terminals can each measure the electric energy of the electric energy test equipment within the time period according to the first message, and return the second message in response to the first message. Thus, the substation terminal receives second messages returned by N electric energy metering terminals based on the first message, totaling N second messages, and each of the N second messages includes: an electric energy metering value obtained by measuring the electric energy testing equipment within a time period by an electric energy metering terminal corresponding to the N electric energy metering terminals; the substation terminal determines a total of N electric energy metering values ​​from the N second messages.

[0043] It can be understood that the charging of the electric energy test equipment by the substation terminal is specifically implemented as follows: The substation terminal divides the time period into K sub-time periods according to the length of the time period in which the electric energy test equipment needs to be charged. The length of each sub-time period in the K sub-time periods is random (i.e., randomly determined, such as first being divided into K segments, and then using a random algorithm (such as Monte Carlo algorithm, Las Vegas algorithm, etc.) to change the length of each segment). K is an integer greater than 1, and the value of K corresponds to the length of the time period. The longer the length of the time period, the larger the corresponding value of K. For the first sub-time period among the K sub-time periods, the substation terminal randomly determines the first charging power value from the preset first charging power interval, and charges the electric energy test equipment with the first charging power value in the first sub-time period. Afterwards, for the second sub-time period among the K sub-time periods, the substation terminal randomly determines the second charging power value from the preset second charging power interval, and charges the electric energy test equipment with the second charging power value in the second sub-time period, and the first charging power interval and the second charging power interval partially overlap. The specific values ​​of the first charging power interval and the second charging power interval can be selected according to actual conditions without restriction. Afterwards, for the third sub-time period in the K sub-time periods, the station terminal randomly determines the third charging power value from the first charging power interval, and charges the electric energy test equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the Kth sub-time period. It can be understood that such a charging method is mainly to simulate the volatility and randomness of electric energy in actual use.

[0044] S202, the substation terminal determines the electric energy measurement errors of the N electric energy meters according to the electric energy charging value of the electric energy testing equipment charged by the substation terminal and the N electric energy measurement values.

[0045] For the i-th electric energy metering terminal among N electric energy metering terminals, i is any integer from 1 to N, and the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, and the difference #i is the electric energy metering error value of the i-th electric energy metering terminal. For example, the above-mentioned electric energy charging value may be the electric energy charging value recorded locally by the substation terminal during the process of charging the electric energy testing equipment by the substation terminal. The substation terminal may subtract the preset charging loss value from the electric energy charging value to obtain a corrected electric energy charging value; the substation terminal determines the difference #i between the corrected electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal. The substation terminal determines the electric energy metering error change rate of the i-th electric energy metering terminal based on the electric energy metering error value of the i-th electric energy metering terminal and the time period.

[0046] S203, the substation terminal corrects the power measurement of each of the M power metering terminals according to the power measurement errors of each of the N power metering terminals, where the M power metering terminals include N power metering terminals, and M is an integer greater than N.

[0047] For the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the i-th electric energy metering terminal and at least two electric energy metering terminals connected to the i-th electric energy metering terminal as the i-th electric energy metering terminal group, and determines a total of N electric energy metering terminal groups when i traverses from 1 to N. For the i-th electric energy metering terminal group among the N electric energy metering terminal groups, the substation terminal can send an electric energy metering error #i to the i-th electric energy metering terminal in the i-th electric energy metering terminal group, such as sending indication information, the indication information carrying the electric energy metering error #i and the identifier of each electric energy metering terminal in the i-th electric energy metering terminal group. The i-th electric energy metering terminal (such as according to the identifier in the indication information) sends the electric energy metering error #i to all other electric energy metering terminals in the i-th electric energy metering terminal group except the i-th electric energy metering terminal, so that each electric energy metering terminal in the i-th electric energy metering terminal group performs electric energy metering correction, and the electric energy metering error #i is the electric energy metering error of the i-th electric energy metering terminal. The electric energy metering error #i is the electric energy metering error change rate #i, and for the target electric energy metering terminal among the M electric energy metering terminals, the target electric energy metering terminal is any one of the M electric energy metering terminals; The target electric energy metering terminal is configured as follows: if the target electric energy metering terminal receives a first electric energy metering error change rate (i.e., any one of the above-mentioned N electric energy metering error change rates), the target electric energy metering terminal multiplies the first electric energy metering error change rate by the first time length to obtain a first electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current time t1 on the first electric energy metering error value to obtain a correction value, and the first time length is the time length between the current time t1 and the time t2 when the last error correction was performed or the initial time t3 when the electric energy metering was started. Alternatively, if the target electric energy metering terminal receives multiple electric energy metering error change rates, the target electric energy metering terminal determines whether the difference between the maximum value and the minimum value of the multiple electric energy metering error change rates is greater than a preset difference threshold; if it is greater than the preset difference threshold, the target electric energy metering terminal determines the average of the multiple electric energy metering error change rates as the target electric energy metering error change rate (to ensure the reliability of error correction); otherwise, the minimum value of the multiple electric energy metering error change rates is determined as the target electric energy metering error change rate; on this basis, the target electric energy metering terminal multiplies the target electric energy metering error change rate by the first time length to obtain a target electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current moment on the target electric energy metering error value to obtain a correction value.

[0048] In summary, in response to the substation terminal charging the electric energy test equipment, the substation terminal can obtain the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy test equipment, a total of N electric energy metering values, so that the substation terminal can determine the electric energy metering errors of the N electric energy meters according to the electric energy charging value of the substation terminal charging the electric energy test equipment and the N electric energy metering values, so as to use the electric energy metering errors of the N electric energy meters to correct the electric energy metering of more M electric energy metering terminals, that is, to realize clustered electric energy metering error detection and correction Combination of the above Figure 2 The method provided by the embodiment of the present invention is described in detail. The following is a detailed description of an electric energy metering error monitoring system based on a substation terminal for executing the method provided by the embodiment of the present invention, the system includes a substation terminal, and the substation terminal is configured as follows: in response to the substation terminal charging the electric energy test equipment, the substation terminal obtains the electric energy metering value obtained by each of the N electric energy metering terminals metering the electric energy test equipment, a total of N electric energy metering values, N is an integer greater than or equal to 1; the substation terminal determines the electric energy metering error of each of the N electric energy meters according to the electric energy charging value of the electric energy test equipment charged by the substation terminal, and the N electric energy metering values; the substation terminal corrects the electric energy metering value of each of the M electric energy metering terminals according to the electric energy metering errors of each of the N electric energy meters, and the M electric energy metering terminals include N electric energy metering terminals, and M is an integer greater than N.

[0049] Optionally, any one of the M electric energy metering terminals is connected to the electric energy testing equipment; in response to the substation terminal charging the electric energy testing equipment, the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, including: in response to the substation terminal having completed charging of the electric energy testing equipment, the substation terminal selects N electric energy metering terminals that meet the topological conditions from the M electric energy metering terminals, and the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, a total of N electric energy metering values.

[0050] Optionally, the substation terminal selects N electric energy metering terminals that meet the topological conditions from M electric energy metering terminals, including: the substation terminal selects N electric energy metering terminals that are connected to at least two electric energy metering terminals from the M electric energy metering terminals according to a preset topological selection condition and the topological connection relationship of the M electric energy metering terminals, and the topological selection condition indicates that the selected terminal needs to be connected to at least two other terminals.

[0051] Optionally, the substation terminal obtains from N electric energy metering terminals electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring an electric energy test device, a total of N electric energy metering values, including: the substation terminal sends a first message to each of the N electric energy metering terminals, the first message including the following multiple information: an identifier of the electric energy test device, a time period for charging the electric energy test device, or an electric energy metering acquisition request, the electric energy metering acquisition request acquires the electric energy metering value of the charged device, and the multiple information are used to jointly indicate that the device receiving the first message needs to provide the electric energy metering value of the electric energy test device within the time period; the substation terminal receives a second message returned by each of the N electric energy metering terminals based on the first message, a total of N second messages, each of the N second messages including: an electric energy metering terminal corresponding to the N electric energy metering terminals measures the electric energy test device within the time period, and the electric energy metering value obtained; the substation terminal determines a total of N electric energy metering values ​​from the N second messages.

[0052] Optionally, the substation terminal determines the electric energy metering errors of N electric energy meters based on the electric energy charging value used by the substation terminal to charge the electric energy testing equipment and the N electric energy metering values, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, and the difference #i is the electric energy metering error value of the i-th electric energy metering terminal; the substation terminal determines the electric energy metering error change rate of the i-th electric energy metering terminal based on the electric energy metering error value of the i-th electric energy metering terminal and the time period.

[0053] Optionally, the electric energy charging value is the electric energy charging value locally recorded by the substation terminal during the process of charging the electric energy testing equipment by the substation terminal, and the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among N electric energy metering values, including: the substation terminal subtracts a preset charging loss value from the electric energy charging value to obtain a corrected electric energy charging value; the substation terminal determines the difference #i between the corrected electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal.

[0054] Optionally, the substation terminal corrects the electric energy measurement of each of the M electric energy metering terminals according to the electric energy metering errors of each of the N electric energy metering terminals, including: for the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the i-th electric energy metering terminal and at least two electric energy metering terminals connected to the i-th electric energy metering terminal as the i-th electric energy metering terminal group, and when i is traversed from 1 to N, a total of N electric energy metering terminal groups are determined; for the N electric energy metering terminals For the i-th electric energy metering terminal group in the terminal group, the substation terminal sends an electric energy metering error #i to the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that the i-th electric energy metering terminal sends the electric energy metering error #i to all other electric energy metering terminals except the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that each electric energy metering terminal in the i-th electric energy metering terminal group performs electric energy metering correction, and the electric energy metering error #i is the electric energy metering error of the i-th electric energy metering terminal.

[0055] Optionally, the electric energy metering error #i is the electric energy metering error change rate #i, and for a target electric energy metering terminal among the M electric energy metering terminals, the target electric energy metering terminal is any one of the M electric energy metering terminals; the target electric energy metering terminal is configured as follows: if the target electric energy metering terminal receives a first electric energy metering error change rate, the target electric energy metering terminal multiplies the first electric energy metering error change rate by a first time length to obtain a first electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current time t1 with the first electric energy metering error value to obtain a correction value, and the first time length is the time length between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when the electric energy metering was started; Alternatively, if the target electric energy metering terminal receives multiple electric energy metering error change rates, the target electric energy metering terminal determines whether the difference between the maximum value and the minimum value of the multiple electric energy metering error change rates is greater than a preset difference threshold; if it is greater than the preset difference threshold, the target electric energy metering terminal determines the average of the multiple electric energy metering error change rates as the target electric energy metering error change rate; otherwise, the minimum value of the multiple electric energy metering error change rates is determined as the target electric energy metering error change rate; on this basis, the target electric energy metering terminal multiplies the target electric energy metering error change rate by the first time length to obtain the target electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current moment on the target electric energy metering error value to obtain a corrected value.

[0056] Optionally, the substation terminal charges the electric energy test equipment, including: the substation terminal divides the time period into K sub-time periods according to the length of the time period in which the electric energy test equipment needs to be charged, and the length of each sub-time period in the K sub-time periods is random; for the first sub-time period in the K sub-time periods, the substation terminal randomly determines a first charging power value from a preset first charging power interval, and charges the electric energy test equipment with the first charging power value in the first sub-time period; then, for the second sub-time period in the K sub-time periods, , the station terminal randomly determines a second charging power value from a preset second charging power interval, and charges the electric energy test equipment with the second charging power value in the second sub-time period, and the first charging power interval partially overlaps with the second charging power interval; thereafter, for the third sub-time period among the K sub-time periods, the station terminal randomly determines a third charging power value from the first charging power interval, and charges the electric energy test equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the Kth sub-time period.

[0057] Figure 4 The schematic diagram of the structure of the electronic device provided by the embodiment of the present invention. For example, the electronic device may be a network device, or a chip (system) or other components or assemblies that can be set in the network device. Figure 4 As shown, the electronic device 400 may include a processor 401. Optionally, the electronic device 400 may further include a memory 402 and / or a transceiver 403. The processor 401 is coupled with the memory 402 and the transceiver 403, such as being connected via a communication bus.

[0058] Combine the following Figure 4 The components of the electronic device 400 are described in detail: The processor 401 is the control center of the electronic device 400, and may be a processor or a general term for multiple processing elements. For example, the processor 401 is one or more central processing units (CPUs), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (FPGAs).

[0059] Optionally, the processor 401 can execute various functions of the electronic device 400 by running or executing the software program stored in the memory 402 and calling the data stored in the memory 402, such as executing the above Figure 2 The electric energy metering error monitoring method based on the substation terminal is shown.

[0060] In a specific implementation, as an embodiment, the processor 401 may include one or more CPUs, such as Figure 4 CPU0 and CPU1 are shown in FIG.

[0061] In a specific implementation, as an embodiment, the electronic device 400 may also include multiple processors. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0062] The memory 402 is used to store the software program for executing the solution of the present invention, and the execution is controlled by the processor 401. The specific implementation method can refer to the above method embodiment, which will not be repeated here.

[0063] Optionally, the memory 402 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 402 may be integrated with the processor 401, or may exist independently and access the computer through the interface circuit ( Figure 4 The processor 401 is coupled to the processor 401 (not shown), which is not specifically limited in this embodiment of the present invention.

[0064] The transceiver 403 is used for communication with other electronic devices. For example, if the electronic device 400 is a terminal, the transceiver 403 can be used to communicate with a network device, or with another terminal device. For another example, if the electronic device 400 is a network device, the transceiver 403 can be used to communicate with a terminal, or with another network device.

[0065] Optionally, the transceiver 403 may include a receiver and a transmitter ( Figure 4 The receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0066] Optionally, the transceiver 403 may be integrated with the processor 401, or may exist independently and communicate with the electronic device 400 through an interface circuit ( Figure 4 The processor 401 is coupled to the processor 401 (not shown), which is not specifically limited in this embodiment of the present invention.

[0067] Understandably, Figure 4 The structure of the electronic device 400 shown in the figure does not constitute a limitation on the electronic device, and the actual electronic device may include more or fewer components than those shown in the figure, or combine certain components, or arrange the components differently.

[0068] In addition, the technical effects of the electronic device 400 can refer to the technical effects of the methods described in the above method embodiments, which will not be repeated here.

[0069] It should be understood that the processor in the embodiment of the present invention may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0070] It should also be understood that the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0071] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0072] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0073] In the present invention, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0074] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0075] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0076] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0077] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0078] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0079] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0080] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0081] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for monitoring electric energy metering errors based on a substation terminal, characterized in that: The method is applied to a station terminal, and the method comprises: In response to the station terminal charging the electric energy test device, the station terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals metering the electric energy test device, a total of N electric energy metering values, where N is an integer greater than or equal to 1; The substation terminal determines the electric energy measurement errors of the N electric energy meters according to the electric energy charging value of the electric energy testing device charged by the substation terminal and the N electric energy measurement values; The substation terminal corrects the electric energy measurement of each of the M electric energy metering terminals according to the electric energy measurement errors of each of the N electric energy metering terminals, wherein the M electric energy metering terminals include the N electric energy metering terminals, and M is an integer greater than N.

2. The method according to claim 1, characterized in that Any one of the M electric energy metering terminals is connected to the electric energy testing device; in response to the station terminal charging the electric energy testing device, the station terminal obtains the electric energy metering value obtained by each of the N electric energy metering terminals metering the electric energy testing device, including: In response to the completion of charging of the electric energy testing equipment by the substation terminal, the substation terminal selects the N electric energy metering terminals that meet the topological conditions from the M electric energy metering terminals, and the substation terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals measuring the electric energy testing equipment, for a total of N electric energy metering values.

3. The method according to claim 2, characterized in that The station terminal selects the N electric energy metering terminals that meet the topology condition from the M electric energy metering terminals, including: The substation terminal selects the N electric energy metering terminals connected to at least two electric energy metering terminals from the M electric energy metering terminals according to a preset topology selection condition and a topological connection relationship among the M electric energy metering terminals, wherein the topology selection condition indicates that the selected terminal needs to be connected to at least two other terminals.

4. The method according to claim 2, characterized in that: The substation terminal obtains, from the N electric energy metering terminals, electric energy metering values ​​obtained by the N electric energy metering terminals respectively measuring the electric energy test equipment, a total of N electric energy metering values, including: The substation terminal sends a first message to each of the N electric energy metering terminals, wherein the first message includes the following multiple pieces of information: an identifier of the electric energy test device, a time period for the electric energy test device to be charged, or an electric energy metering acquisition request, wherein the electric energy metering acquisition request acquires the electric energy metering value of the charged device, and the multiple pieces of information are used to jointly indicate that the device receiving the first message needs to provide the electric energy metering value of the electric energy test device within the time period; The substation terminal receives a second message returned by each of the N electric energy metering terminals based on the first message, a total of N second messages, each of the N second messages comprising: an electric energy metering terminal corresponding to the N electric energy metering terminals measures the electric energy test equipment within the time period, and the electric energy metering value obtained; The substation terminal determines the N electric energy metering values ​​from the N second messages.

5. The method according to claim 4, characterized in that The substation terminal determines the electric energy measurement errors of the N electric energy meters according to the electric energy charging value of the electric energy testing device charged by the substation terminal and the N electric energy measurement values, including: For the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines a difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, and the difference #i is the electric energy metering error value of the i-th electric energy metering terminal; The substation terminal determines the electric energy metering error change rate of the i-th electric energy metering terminal according to the electric energy metering error value of the i-th electric energy metering terminal and the time period.

6. The method according to claim 5, characterized in that The electric energy charging value is the electric energy charging value recorded locally by the substation terminal during the process of charging the electric energy testing equipment by the substation terminal, and the substation terminal determines the difference #i between the electric energy charging value and the electric energy metering value of the i-th electric energy metering terminal among the N electric energy metering values, including: The station terminal subtracts a preset charging loss value from the electric energy charging value to obtain a corrected electric energy charging value; The substation terminal determines the difference #i between the corrected electric energy charging value and the electric energy measurement value of the i-th electric energy metering terminal.

7. The method according to claim 1, characterized in that The substation terminal corrects the electric energy measurement of each of the M electric energy metering terminals according to the electric energy measurement errors of each of the N electric energy metering terminals, including: For the i-th electric energy metering terminal among the N electric energy metering terminals, i is any integer from 1 to N, the substation terminal determines the i-th electric energy metering terminal and at least two electric energy metering terminals connected to the i-th electric energy metering terminal as the i-th electric energy metering terminal group, and when i is traversed from 1 to N, a total of N electric energy metering terminal groups are determined; For the i-th electric energy metering terminal group among the N electric energy metering terminal groups, the substation terminal sends an electric energy metering error #i to the i-th electric energy metering terminal in the i-th electric energy metering terminal group, so that the i-th electric energy metering terminal sends the electric energy metering error #i to all other electric energy metering terminals in the i-th electric energy metering terminal group except the i-th electric energy metering terminal, so that each electric energy metering terminal in the i-th electric energy metering terminal group performs electric energy metering correction, and the electric energy metering error #i is the electric energy metering error of the i-th electric energy metering terminal.

8. The method according to claim 7, characterized in that The electric energy metering error #i is the electric energy metering error change rate #i, and for a target electric energy metering terminal among the M electric energy metering terminals, the target electric energy metering terminal is any one of the M electric energy metering terminals; The target electric energy metering terminal is configured as follows: if the target electric energy metering terminal receives a first electric energy metering error change rate, the target electric energy metering terminal multiplies the first electric energy metering error change rate by a first time length to obtain a first electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy measurement collected at the current time t1 on the first electric energy metering error value to obtain a correction value, wherein the first time length is the time length between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when the electric energy metering was started; Alternatively, if the target electric energy metering terminal receives multiple electric energy metering error change rates, the target electric energy metering terminal determines whether the difference between the maximum value and the minimum value of the multiple electric energy metering error change rates is greater than a preset difference threshold; if it is greater than the preset difference threshold, the target electric energy metering terminal determines the average of the multiple electric energy metering error change rates as the target electric energy metering error change rate; otherwise, the minimum value of the multiple electric energy metering error change rates is determined as the target electric energy metering error change rate; on this basis, the target electric energy metering terminal multiplies the target electric energy metering error change rate by the first time length to obtain a target electric energy metering error value, and the target electric energy metering terminal superimposes the electric energy metering collected at the current moment on the target electric energy metering error value to obtain a corrected value.

9. The method according to claim 1, characterized in that: The station terminal charges the electric energy testing equipment, including: The substation terminal divides the time period into K sub-time periods according to the length of the time period during which the electric energy test equipment needs to be charged, and the length of each sub-time period in the K sub-time periods is random; For the first sub-time period of the K sub-time periods, the station terminal randomly determines a first charging power value from a preset first charging power interval, and charges the electric energy test device with the first charging power value in the first sub-time period; Afterwards, for the second sub-time period of the K sub-time periods, the station terminal randomly determines a second charging power value from a preset second charging power interval, and charges the electric energy test equipment with the second charging power value in the second sub-time period, and the first charging power interval partially overlaps with the second charging power interval; Afterwards, for the third sub-time period among the K sub-time periods, the substation terminal randomly determines a third charging power value from the first charging power interval, and charges the electric energy testing equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the Kth sub-time period.

10. An electric energy metering error monitoring system based on a substation terminal, characterized in that: The system includes a station terminal, and the station terminal is configured to: In response to the station terminal charging the electric energy test device, the station terminal obtains the electric energy metering values ​​obtained by each of the N electric energy metering terminals metering the electric energy test device, a total of N electric energy metering values, where N is an integer greater than or equal to 1; The substation terminal determines the electric energy measurement errors of the N electric energy meters according to the electric energy charging value of the electric energy testing device charged by the substation terminal and the N electric energy measurement values; The substation terminal corrects the respective electric energy measurement values ​​of M electric energy metering terminals according to the respective electric energy measurement errors of the N electric energy meters, wherein the M electric energy metering terminals include the N electric energy metering terminals, and M is an integer greater than N.

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