Power metering error monitoring method based on transformer substation terminals

Abstract

This invention provides a method for monitoring electricity metering errors based on distribution transformer terminals, belonging to the field of Internet of Things (IoT) technology. It is used to achieve clustered electricity metering error detection and correction through distribution transformer terminals. The method is applied to distribution transformer terminals and includes: responding to the distribution transformer terminal charging an electricity testing device; the distribution transformer terminal acquiring electricity metering values ​​obtained by each of N electricity metering terminals measuring the electricity testing device, resulting in N electricity metering values, where N is an integer greater than or equal to 1; the distribution transformer terminal determining the electricity metering error of each of the N electricity metering terminals based on the electricity charging value of the electricity testing device and the N electricity metering values; and the distribution transformer terminal correcting the electricity metering of M electricity metering terminals based on the electricity metering errors of the N electricity metering terminals, where M is an integer greater than N.

Description

Technical Field

[0001] This invention relates to the field of Internet of Things (IoT) technology, and in particular to a method for monitoring power metering errors based on transformer substation terminals. Background Technology

[0002] Distribution transformer terminals (DVTs) are devices located at the end of the power distribution network, responsible for data collection, processing, and transmission. Application scenarios for DVTs include the following: Real-time monitoring and fault detection: DVTs can monitor equipment operating status by continuously collecting and analyzing power consumption data, and promptly detect anomalies, thereby enabling fault detection and diagnosis. Preventive maintenance: By analyzing trends in power consumption data, DVTs can predict potential equipment failures, aiding in preventive maintenance and reducing downtime and repair costs. Electricity consumption monitoring: With increasing electricity consumption in urban and rural areas, DVTs can help power grid companies monitor users' electricity consumption behavior, reduce line losses, and ensure the stability and effectiveness of power supply. Intelligent management systems: As part of a smart electricity monitoring system, DVTs can work with other intelligent devices (such as smart circuit breakers) to achieve 24 / 7 monitoring and management of electricity consumption through big data and cloud computing technologies. Anti-electricity theft detection: Utilizing big data analytics, DVTs can more effectively detect and prevent electricity theft, improving the accuracy of electricity metering. Testing under special environments: Under certain conditions (such as high temperature, high humidity or electromagnetic interference), the transformer terminal can use advanced testing technologies (such as infrared imaging and ultraviolet imaging) to conduct detailed testing on the equipment, ensuring that faults can be effectively identified and located even in complex environments.

[0003] The current goal is to enable the distribution terminal to be used in more application scenarios, such as error detection and correction of electricity metering. How to achieve this is the current research question. Summary of the Invention

[0004] This invention provides a method for monitoring electricity metering errors based on transformer area terminals, which enables clustered electricity metering error detection and correction through transformer area terminals.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Firstly, a method for monitoring electricity metering errors based on a distribution transformer terminal is provided. This method is applied to the distribution transformer terminal and includes: in response to the distribution transformer terminal charging an electricity testing device, the distribution transformer terminal acquires electricity metering values ​​obtained by each of N electricity metering terminals measuring the electricity testing device, resulting in a total of N electricity metering values, where N is an integer greater than or equal to 1; the distribution transformer terminal determines the electricity metering error of each of the N electricity metering terminals based on the electricity charging value obtained by the distribution transformer terminal charging the electricity testing device and the N electricity metering values; and the distribution transformer terminal corrects the electricity metering of each of the M electricity metering terminals based on the electricity metering errors of the N electricity metering terminals, where M is an integer greater than N.

[0007] Optionally, any one of the M energy metering terminals is connected to the energy testing equipment. In response to the substation terminal charging the energy testing equipment, the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment. This includes: in response to the substation terminal completing the charging of the energy testing equipment, the substation terminal selects N energy metering terminals from the M energy metering terminals that meet the topology conditions, and the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment, for a total of N energy metering values.

[0008] Optionally, the distribution terminal selects N energy metering terminals that meet the topology conditions from the M energy metering terminals, including: the distribution terminal selects N energy metering terminals that are connected to at least two other energy metering terminals from the M energy metering terminals according to the preset topology selection conditions and the topology connection relationship of the M energy metering terminals, and the topology selection conditions indicate that the selected terminals need to be connected to at least two other terminals.

[0009] Optionally, the distribution terminal obtains N energy metering values ​​from N energy metering terminals, each measuring the energy testing equipment. This results in N energy metering values ​​in total. The process includes: the distribution terminal sending a first message to each of the N energy metering terminals. The first message includes multiple pieces of information: the identifier of the energy testing equipment, the charging time period of the energy testing equipment, or an energy metering acquisition request. The energy metering acquisition request obtains the energy metering value of the charged equipment. These multiple pieces of information are used to jointly instruct the receiving device to provide the energy metering value of the energy testing equipment within the time period. The distribution terminal receives N second messages returned by each of the N energy metering terminals based on the first message. Each of the N second messages contains: the energy metering value obtained by one of the N energy metering terminals measuring the energy testing equipment within the time period. The distribution terminal determines N energy metering values ​​from the N second messages.

[0010] Optionally, the distribution terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the distribution terminal and the N energy metering values. This includes: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal among the N energy metering values, where the difference #i is the energy metering error value of the i-th energy metering terminal; and the distribution terminal determines the rate of change of the energy metering error of the i-th energy metering terminal based on the energy metering error value of the i-th energy metering terminal and the time period.

[0011] Optionally, the power charging value is the power charging value recorded locally by the distribution terminal during the power charging process of the power testing equipment. The distribution terminal determines the difference #i between the power charging value and the power metering value of the i-th power metering terminal among N power metering values, including: the distribution terminal subtracts a preset charging loss value from the power charging value to obtain the corrected power charging value; the distribution terminal determines the difference #i between the corrected power charging value and the power metering value of the i-th power metering terminal.

[0012] Optionally, the distribution terminal corrects the energy metering of each of the M energy metering terminals based on the energy metering errors of the N energy meters, including: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the i-th energy metering terminal and at least two energy metering terminals connected to the i-th energy metering terminal as the i-th energy metering terminal group. As i iterates through the N energy metering terminals, a total of N energy metering terminal groups are determined; for the N energy metering terminals... In the i-th power metering terminal group, the transformer terminal sends the power metering error #i to the i-th power metering terminal in the i-th power metering terminal group. The i-th power metering terminal then sends the power metering error #i to all other power metering terminals in the i-th power metering terminal group except for the i-th power metering terminal itself. This allows each power metering terminal in the i-th power metering terminal group to perform power metering correction. The power metering error #i is the power metering error of the i-th power metering terminal.

[0013] Optionally, the energy metering error #i is the energy metering error change rate #i. For the target energy metering terminal among the M energy metering terminals, the target energy metering terminal is any one of the M energy metering terminals. The target energy metering terminal is configured as follows: if the target energy metering terminal receives a first energy metering error change rate, the target energy metering terminal multiplies the first energy metering error change rate by a first duration to obtain a first energy metering error value. The target energy metering terminal then adds the first energy metering error value to the energy metering data collected at the current time t1 to obtain a correction value. The first duration is the duration between the current time t1 and the time t2 when the error correction was performed or the initial time t3 when energy metering began. Alternatively, if the target energy metering terminal receives multiple energy metering error change rates, the target energy metering terminal determines whether the difference between the maximum and minimum values ​​among the multiple energy metering error change rates is greater than a preset difference threshold. If it is greater than the preset difference threshold, the target energy metering terminal determines the average of the multiple energy metering error change rates as the target energy metering error change rate; otherwise, it determines the minimum value among the multiple energy metering error change rates as the target energy metering error change rate. Based on this, the target energy metering terminal multiplies the target energy metering error change rate by a first time duration to obtain the target energy metering error value. The target energy metering terminal then adds the energy metering data collected at the current moment to the target energy metering error value to obtain a correction value.

[0014] Optionally, the distribution terminal charges the power testing equipment, including: the distribution terminal dividing the time period into K sub-time periods according to the duration of the time period during which the power testing equipment needs to be charged, wherein the duration of each sub-time period is random; for the first sub-time period, the distribution terminal randomly determines a first charging power value from a preset first charging power range, and charges the power testing equipment with the first charging power value in the first sub-time period; subsequently, for the second sub-time period... The distribution terminal randomly determines a second charging power value from the preset second charging power range, and charges the power testing equipment with the second charging power value in the second sub-time period. The first charging power range and the second charging power range partially overlap. Then, in the third sub-time period of the K sub-time periods, the distribution terminal randomly determines a third charging power value from the first charging power range, and charges the power testing equipment with the third charging power value in the third sub-time period. This process continues until charging is completed in the K sub-time period.

[0015] Secondly, a power metering error monitoring system based on a distribution transformer terminal is provided. The system includes a distribution transformer terminal, which is configured to: in response to the distribution transformer terminal charging a power testing device, acquire the power metering values ​​obtained by each of N power metering terminals measuring the power testing device, resulting in a total of N power metering values, where N is an integer greater than or equal to 1; determine the power metering error of each of the N power meters based on the power charging value of the power metering terminal charging the power testing device and the N power metering values; and correct the power metering values ​​of M power metering terminals based on the power metering errors of the N power meters, where M power metering terminals include N power metering terminals, and M is an integer greater than N.

[0016] Optionally, any one of the M energy metering terminals is connected to the energy testing equipment. In response to the substation terminal charging the energy testing equipment, the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment. This includes: in response to the substation terminal completing the charging of the energy testing equipment, the substation terminal selects N energy metering terminals from the M energy metering terminals that meet the topology conditions, and the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment, for a total of N energy metering values.

[0017] Optionally, the distribution terminal selects N energy metering terminals that meet the topology conditions from the M energy metering terminals, including: the distribution terminal selects N energy metering terminals that are connected to at least two other energy metering terminals from the M energy metering terminals according to the preset topology selection conditions and the topology connection relationship of the M energy metering terminals, and the topology selection conditions indicate that the selected terminals need to be connected to at least two other terminals.

[0018] Optionally, the distribution terminal obtains N energy metering values ​​from N energy metering terminals, each measuring the energy testing equipment. This results in N energy metering values ​​in total. The process includes: the distribution terminal sending a first message to each of the N energy metering terminals. The first message includes multiple pieces of information: the identifier of the energy testing equipment, the charging time period of the energy testing equipment, or an energy metering acquisition request. The energy metering acquisition request obtains the energy metering value of the charged equipment. These multiple pieces of information are used to jointly instruct the receiving device to provide the energy metering value of the energy testing equipment within the time period. The distribution terminal receives N second messages returned by each of the N energy metering terminals based on the first message. Each of the N second messages contains: the energy metering value obtained by one of the N energy metering terminals measuring the energy testing equipment within the time period. The distribution terminal determines N energy metering values ​​from the N second messages.

[0019] Optionally, the distribution terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the distribution terminal and the N energy metering values. This includes: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal among the N energy metering values, where the difference #i is the energy metering error value of the i-th energy metering terminal; and the distribution terminal determines the rate of change of the energy metering error of the i-th energy metering terminal based on the energy metering error value of the i-th energy metering terminal and the time period.

[0020] Optionally, the power charging value is the power charging value recorded locally by the distribution terminal during the power charging process of the power testing equipment. The distribution terminal determines the difference #i between the power charging value and the power metering value of the i-th power metering terminal among N power metering values, including: the distribution terminal subtracts a preset charging loss value from the power charging value to obtain the corrected power charging value; the distribution terminal determines the difference #i between the corrected power charging value and the power metering value of the i-th power metering terminal.

[0021] Optionally, the distribution terminal corrects the energy metering of each of the M energy metering terminals based on the energy metering errors of the N energy meters, including: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the i-th energy metering terminal and at least two energy metering terminals connected to the i-th energy metering terminal as the i-th energy metering terminal group. As i iterates through the N energy metering terminals, a total of N energy metering terminal groups are determined; for the N energy metering terminals... In the i-th power metering terminal group, the transformer terminal sends the power metering error #i to the i-th power metering terminal in the i-th power metering terminal group. The i-th power metering terminal then sends the power metering error #i to all other power metering terminals in the i-th power metering terminal group except for the i-th power metering terminal itself. This allows each power metering terminal in the i-th power metering terminal group to perform power metering correction. The power metering error #i is the power metering error of the i-th power metering terminal.

[0022] Optionally, the energy metering error #i is the energy metering error change rate #i. For the target energy metering terminal among the M energy metering terminals, the target energy metering terminal is any one of the M energy metering terminals. The target energy metering terminal is configured as follows: if the target energy metering terminal receives a first energy metering error change rate, the target energy metering terminal multiplies the first energy metering error change rate by a first duration to obtain a first energy metering error value. The target energy metering terminal then adds the first energy metering error value to the energy metering data collected at the current time t1 to obtain a correction value. The first duration is the duration between the current time t1 and the time t2 when the error correction was performed or the initial time t3 when energy metering began. Alternatively, if the target energy metering terminal receives multiple energy metering error change rates, the target energy metering terminal determines whether the difference between the maximum and minimum values ​​among the multiple energy metering error change rates is greater than a preset difference threshold. If it is greater than the preset difference threshold, the target energy metering terminal determines the average of the multiple energy metering error change rates as the target energy metering error change rate; otherwise, it determines the minimum value among the multiple energy metering error change rates as the target energy metering error change rate. Based on this, the target energy metering terminal multiplies the target energy metering error change rate by a first time duration to obtain the target energy metering error value. The target energy metering terminal then adds the energy metering data collected at the current moment to the target energy metering error value to obtain a correction value.

[0023] Optionally, the distribution terminal charges the power testing equipment, including: the distribution terminal dividing the time period into K sub-time periods according to the duration of the time period during which the power testing equipment needs to be charged, wherein the duration of each sub-time period is random; for the first sub-time period, the distribution terminal randomly determines a first charging power value from a preset first charging power range, and charges the power testing equipment with the first charging power value in the first sub-time period; subsequently, for the second sub-time period... The distribution terminal randomly determines a second charging power value from the preset second charging power range, and charges the power testing equipment with the second charging power value in the second sub-time period. The first charging power range and the second charging power range partially overlap. Then, in the third sub-time period of the K sub-time periods, the distribution terminal randomly determines a third charging power value from the first charging power range, and charges the power testing equipment with the third charging power value in the third sub-time period. This process continues until charging is completed in the K sub-time period.

[0024] Thirdly, an electronic device is provided, comprising: a processor and a memory; the memory is used to store a computer program, which, when executed by the processor, causes the electronic device to perform the method described in the first aspect.

[0025] In one possible design, the electronic device described in the third aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the electronic device described in the third aspect and other electronic devices.

[0026] In the embodiments of the present invention, the electronic device described in the third aspect may be a terminal, or a chip (system) or other component or assembly disposed in the terminal, or a system containing the terminal.

[0027] Fourthly, 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 causes the computer to perform the method described in the first aspect.

[0028] In summary, in response to the charging of the power testing equipment by the distribution terminal, the distribution terminal can obtain the power metering values ​​obtained by each of the N power metering terminals measuring the power testing equipment, resulting in a total of N power metering values. In this way, the distribution terminal can determine the power metering error of each of the N power meters based on the power charging value of the distribution terminal and these N power metering values. Then, the power metering errors of these N power meters can be used to correct the power metering of more M power metering terminals, thus realizing clustered power metering error detection and correction. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the architecture of an Internet of Things (IoT) system provided in an embodiment of the present invention;

[0030] Figure 2 A flowchart illustrating the method for monitoring electricity metering errors based on transformer substation terminals provided in this embodiment of the invention;

[0031] Figure 3 This is a schematic diagram of the topological connection relationship in the power metering error monitoring method based on transformer substation terminals provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0033] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0034] In this embodiment of the invention, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. The information indicated by a certain piece of information is called the information to be instructed. In specific implementation, there are many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly instruct the information to be instructed by instructing other information, where there is a correlation between the other information and the information to be instructed. It can also instruct only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. Simultaneously, common parts of various pieces of information can be identified and uniformly indicated to reduce the instruction overhead caused by individually indicating the same information.

[0035] Furthermore, the specific indication method can also be any existing indication method, such as, but not limited to, the above-mentioned indication methods and their various combinations. Specific details of various indication methods can be found in existing technologies, and will not be elaborated upon here. As described above, for example, when multiple pieces of information of the same type need to be indicated, the indication methods for different pieces of information may differ. In specific implementation, the required indication method can be selected according to specific needs. This embodiment of the invention does not limit the selected indication method; therefore, the indication methods involved in this embodiment of the invention should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated.

[0036] It should be understood that the information to be indicated can be sent as a whole or divided into multiple sub-information messages sent separately, and the sending period and / or timing of these sub-information messages can be the same or different. The specific sending method is not limited in this embodiment of the invention. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the sending device by sending configuration information to the receiving device.

[0037] "Predefined" or "pre-configured" can be achieved by pre-saving corresponding codes, tables, or other means that can be used to indicate relevant information in the device. This embodiment of the invention does not limit the specific implementation method. "Saving" can refer to saving in one or more memories. These memories can be separate installations or integrated into the encoder, decoder, processor, or electronic device. Alternatively, some memories can be separately installed, while others are integrated into the decoder, processor, or electronic device. The type of memory can be any form of storage medium, and this embodiment of the invention does not limit this.

[0038] In the embodiments of this invention, "protocol" may refer to a protocol family in the field of communication, a standard protocol with a similar protocol family frame structure, or a related protocol to be applied in future systems. The embodiments of this invention do not specifically limit this.

[0039] In this embodiment of the invention, descriptions such as "when," "under the circumstances," "if," and "if" all refer to the device making corresponding processing under certain objective circumstances, and are not limited to a specific time. They do not require the device to make a judgment action during implementation, nor do they imply any other limitations.

[0040] In the description of the embodiments of the present invention, unless otherwise stated, " / " indicates that the objects 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 merely a description of the relationship between the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Furthermore, in the description of the embodiments of the present invention, unless otherwise stated, "multiple" refers to two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single 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, and c can be single or multiple. Additionally, to facilitate a clear description of the technical solutions of the embodiments of the present invention, the terms "first" and "second" are used in the embodiments of the present invention to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or order of execution, and that "first," "second," etc., are not necessarily different. Furthermore, in the embodiments of this invention, words such as "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this invention should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner for ease of understanding.

[0041] The network architecture and business scenarios described in the embodiments of this invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of this invention, and do not constitute a limitation on the technical solutions provided by the embodiments of this invention. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this invention are also applicable to similar technical problems.

[0042] To facilitate understanding of the embodiments of the present invention, firstly, using Figure 1 The IoT system shown in the figure is an example, Figure 1 This is a schematic diagram of the architecture of the Internet of Things system to which the power metering error monitoring method based on the transformer terminal provided in this embodiment of the invention is applicable.

[0043] like Figure 1 As shown, the Internet of Things system may include: distribution area terminals, power testing equipment, and power metering terminals.

[0044] The aforementioned transformer substation terminals, power testing equipment, and power metering terminals can all be terminal-type devices, i.e., terminals. These terminals can be terminals with transceiver functions, or chips or chip systems that can be installed on the terminal. These terminals can also be referred to as user equipment (UE), access terminals, subscriber units, user stations, mobile stations (MS), mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication equipment, user agents, or user devices. The terminals in the embodiments of this application may be mobile phones, cellular phones, smartphones, tablets, wireless data cards, personal digital assistants (PDAs), wireless modems, handsets, laptop computers, machine type communication (MTC) terminals, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, roadside units (RSUs) with terminal functions, etc. The terminal in this application may also be an on-board module, on-board unit, on-board component, on-board chip, or on-board unit that is built into the vehicle as one or more components or units. Alternatively, the terminal may also be customer-premises equipment (CPE).

[0045] Figure 2 This is a flowchart illustrating the method provided in an embodiment of the present invention. This method for monitoring electricity metering errors based on transformer substation terminals is applicable to the aforementioned Internet of Things (IoT) system and involves the interaction between devices within the IoT system. The specific process is as follows:

[0046] S201, in response to the power testing equipment being charged by the distribution terminal, the distribution terminal obtains the power metering values ​​obtained by each of the N power metering terminals measuring the power testing equipment, for a total of N power metering values, where N is an integer greater than or equal to 1.

[0047] In this system, any one of the M energy metering terminals is connected to the energy testing equipment, enabling it to meter energy consumption. Upon completion of charging of the energy testing equipment by the distribution station terminal, the distribution station terminal can select N energy metering terminals from the M energy metering terminals that meet the topology requirements. For example, the distribution station terminal can select N energy metering terminals from the M energy metering terminals based on preset topology selection conditions and the topology connections of the M energy metering terminals. The topology selection conditions indicate that the selected terminals need to be connected to at least two other terminals. The advantage of this is that all N energy metering terminals possess multi-node communication capabilities, enabling network-wide error correction through interaction between these N energy metering terminals and other terminals. For example,... Figure 3 As shown, M energy metering terminals include energy metering terminals A to G, and N energy metering terminals specifically include energy metering terminals A, D, G, and E. The distribution station terminal can obtain the energy metering values ​​obtained by each of the N energy metering terminals from the energy testing equipment, resulting in a total of N energy metering values. For example, the distribution station terminal sends a first message to each of the N energy metering terminals. The first message may include the following information: the identifier of the energy testing equipment, the charging time period of the energy testing equipment, or an energy metering acquisition request. The energy metering acquisition request obtains the energy metering value of the charged equipment. This information can be used to jointly instruct the receiving device to provide the energy metering value of the energy testing equipment within the time period. Thus, during the charging process of the energy testing equipment by the distribution station terminal, each of the N energy metering terminals can measure the energy of the energy testing equipment within the time period according to the first message and respond to the first message by returning a second message. Therefore, the distribution terminal receives N second messages returned by each of the N power metering terminals based on the first message, resulting in a total of N second messages. Each of the N second messages contains: the power metering value obtained by one power metering terminal corresponding to the N power metering terminals measuring the power testing equipment within a time period; the distribution terminal determines N power metering values ​​from the N second messages.

[0048] It is understandable that the charging of the power testing equipment by the transformer terminal is implemented as follows:

[0049] The distribution terminal divides the time period for charging the power testing equipment into K sub-time periods based on the required duration. The duration of each sub-time period is randomized (i.e., randomly determined; for example, it can be first divided into K equal segments, and then the duration of each segment can be changed using a random algorithm (such as the Monte Carlo algorithm, Las Vegas algorithm, etc.)). K is an integer greater than 1, and the value of K corresponds to the duration of the time period; the longer the time period, the larger the corresponding value of K. In the first sub-time period, the distribution terminal randomly determines a first charging power value from a preset first charging power range and charges the power testing equipment with the first charging power value in the first sub-time period. Then, in the second sub-time period, the distribution terminal randomly determines a second charging power value from a preset second charging power range and charges the power testing equipment with the second charging power value in the second sub-time period. The first and second charging power ranges partially overlap. The specific values ​​for the first and second charging power ranges can be selected based on actual conditions and are not restricted. Then, for the third sub-time period out of the K sub-time periods, the distribution terminal randomly determines a third charging power value from the first charging power range and charges the power testing equipment with this third charging power value in the third sub-time period. This process continues until charging is completed in the Kth sub-time period. This charging method is primarily designed to simulate the fluctuations and randomness of electrical energy in actual use.

[0050] S202, the distribution terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the distribution terminal and the N energy metering values.

[0051] For the i-th energy metering terminal out of N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal out of the N energy metering values. This difference #i represents the energy metering error value of the i-th energy metering terminal. For example, the aforementioned energy charging value can be the energy charging value recorded locally by the distribution terminal during the charging process of the energy testing equipment. The distribution terminal can subtract a preset charging loss value from the energy charging value to obtain the corrected energy charging value; the distribution terminal then determines the difference #i between the corrected energy charging value and the energy metering value of the i-th energy metering terminal. Based on the energy metering error value of the i-th energy metering terminal and the time period, the distribution terminal determines the rate of change of the energy metering error of the i-th energy metering terminal.

[0052] S203, the distribution terminal corrects the energy metering of M energy metering terminals based on the energy metering errors of N energy meters. The M energy metering terminals include N energy metering terminals, and M is an integer greater than N.

[0053] For the i-th energy metering terminal among N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the i-th energy metering terminal and at least two energy metering terminals connected to the i-th energy metering terminal as the i-th energy metering terminal group. Assuming i ranges from 1 to N, a total of N energy metering terminal groups are determined. For the i-th energy metering terminal group among the N energy metering terminal groups, the distribution terminal can send an energy metering error #i to the i-th energy metering terminal in the i-th energy metering terminal group. If sending an indication message, this indication message carries the energy metering error #i and the identifier of each energy metering terminal in the i-th energy metering terminal group. The energy metering error #i is sent by the i-th energy metering terminal (as indicated by the identifier in the instruction information) to all other energy metering terminals in the i-th energy metering terminal group except for the i-th energy metering terminal itself. This allows each energy metering terminal in the i-th energy metering terminal group to perform energy metering correction. The energy metering error #i is the energy metering error of the i-th energy metering terminal. Here, the energy metering error #i is the rate of change of energy metering error #i. For a target energy metering terminal among the M energy metering terminals, the target energy metering terminal is any one of the M energy metering terminals.

[0054] The target energy metering terminal is configured such that: if the target energy metering terminal receives a first energy metering error change rate (i.e., any one of the above N energy metering error change rates), the target energy metering terminal multiplies the first energy metering error change rate by a first duration to obtain a first energy metering error value. The target energy metering terminal then adds the first energy metering error value to the energy metering data collected at the current time t1 to obtain a correction value. The first duration is the time between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when energy metering began. Alternatively, if the target energy metering terminal receives multiple energy metering error change rates, the target energy metering terminal determines whether the difference between the maximum and minimum values ​​among the multiple energy metering error change rates is greater than a preset difference threshold. If it is greater than the preset difference threshold, the target energy metering terminal determines the average of the multiple energy metering error change rates as the target energy metering error change rate (to ensure the reliability of error correction). Otherwise, the minimum value among the multiple energy metering error change rates is determined as the target energy metering error change rate. Based on this, the target energy metering terminal multiplies the target energy metering error change rate by a first time duration to obtain the target energy metering error value. The target energy metering terminal then adds the energy metering data collected at the current moment to the target energy metering error value to obtain the correction value.

[0055] In summary, in response to the charging of the power testing equipment by the distribution terminal, the distribution terminal can obtain the power metering values ​​obtained by each of the N power metering terminals measuring the power testing equipment, resulting in a total of N power metering values. Thus, the distribution terminal can determine the power metering error of each of the N power meters based on the power charging value obtained by the distribution terminal and these N power metering values. These N power metering errors can then be used to correct the power metering of a larger number of M power metering terminals, thereby achieving clustered power metering error detection and correction.

[0056] The above combination Figure 2 The method provided by the embodiments of the present invention is described in detail below. The following describes in detail a power metering error monitoring system based on a transformer substation terminal for implementing the method provided by the embodiments of the present invention. The system includes a transformer substation terminal, which is configured to: in response to the transformer substation terminal charging a power testing device, acquire power metering values ​​obtained by N power metering terminals respectively metering the power testing device, resulting in a total of N power metering values, where N is an integer greater than or equal to 1; determine the power metering error of each of the N power metering terminals based on the power charging value of the power testing device and the N power metering values; and correct the power metering values ​​of M power metering terminals based on the power metering errors of the N power metering terminals, where M power metering terminals comprise N power metering terminals, and M is an integer greater than N.

[0057] Optionally, any one of the M energy metering terminals is connected to the energy testing equipment. In response to the substation terminal charging the energy testing equipment, the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment. This includes: in response to the substation terminal completing the charging of the energy testing equipment, the substation terminal selects N energy metering terminals from the M energy metering terminals that meet the topology conditions, and the substation terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment, for a total of N energy metering values.

[0058] Optionally, the distribution terminal selects N energy metering terminals that meet the topology conditions from the M energy metering terminals, including: the distribution terminal selects N energy metering terminals that are connected to at least two other energy metering terminals from the M energy metering terminals according to the preset topology selection conditions and the topology connection relationship of the M energy metering terminals, and the topology selection conditions indicate that the selected terminals need to be connected to at least two other terminals.

[0059] Optionally, the distribution terminal obtains N energy metering values ​​from N energy metering terminals, each measuring the energy testing equipment. This results in N energy metering values ​​in total. The process includes: the distribution terminal sending a first message to each of the N energy metering terminals. The first message includes multiple pieces of information: the identifier of the energy testing equipment, the charging time period of the energy testing equipment, or an energy metering acquisition request. The energy metering acquisition request obtains the energy metering value of the charged equipment. These multiple pieces of information are used to jointly instruct the receiving device to provide the energy metering value of the energy testing equipment within the time period. The distribution terminal receives N second messages returned by each of the N energy metering terminals based on the first message. Each of the N second messages contains: the energy metering value obtained by one of the N energy metering terminals measuring the energy testing equipment within the time period. The distribution terminal determines N energy metering values ​​from the N second messages.

[0060] Optionally, the distribution terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the distribution terminal and the N energy metering values. This includes: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal among the N energy metering values, where the difference #i is the energy metering error value of the i-th energy metering terminal; and the distribution terminal determines the rate of change of the energy metering error of the i-th energy metering terminal based on the energy metering error value of the i-th energy metering terminal and the time period.

[0061] Optionally, the power charging value is the power charging value recorded locally by the distribution terminal during the power charging process of the power testing equipment. The distribution terminal determines the difference #i between the power charging value and the power metering value of the i-th power metering terminal among N power metering values, including: the distribution terminal subtracts a preset charging loss value from the power charging value to obtain the corrected power charging value; the distribution terminal determines the difference #i between the corrected power charging value and the power metering value of the i-th power metering terminal.

[0062] Optionally, the distribution terminal corrects the energy metering of each of the M energy metering terminals based on the energy metering errors of the N energy meters, including: for the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the distribution terminal determines the i-th energy metering terminal and at least two energy metering terminals connected to the i-th energy metering terminal as the i-th energy metering terminal group. As i iterates through the N energy metering terminals, a total of N energy metering terminal groups are determined; for the N energy metering terminals... In the i-th power metering terminal group, the transformer terminal sends the power metering error #i to the i-th power metering terminal in the i-th power metering terminal group. The i-th power metering terminal then sends the power metering error #i to all other power metering terminals in the i-th power metering terminal group except for the i-th power metering terminal itself. This allows each power metering terminal in the i-th power metering terminal group to perform power metering correction. The power metering error #i is the power metering error of the i-th power metering terminal.

[0063] Optionally, the energy metering error #i is the energy metering error change rate #i. For the target energy metering terminal among the M energy metering terminals, the target energy metering terminal is any one of the M energy metering terminals. The target energy metering terminal is configured as follows: if the target energy metering terminal receives a first energy metering error change rate, the target energy metering terminal multiplies the first energy metering error change rate by a first duration to obtain a first energy metering error value. The target energy metering terminal then adds the first energy metering error value to the energy metering data collected at the current time t1 to obtain a correction value. The first duration is the duration between the current time t1 and the time t2 when the error correction was performed or the initial time t3 when energy metering began. Alternatively, if the target energy metering terminal receives multiple energy metering error change rates, the target energy metering terminal determines whether the difference between the maximum and minimum values ​​among the multiple energy metering error change rates is greater than a preset difference threshold. If it is greater than the preset difference threshold, the target energy metering terminal determines the average of the multiple energy metering error change rates as the target energy metering error change rate; otherwise, it determines the minimum value among the multiple energy metering error change rates as the target energy metering error change rate. Based on this, the target energy metering terminal multiplies the target energy metering error change rate by a first time duration to obtain the target energy metering error value. The target energy metering terminal then adds the energy metering data collected at the current moment to the target energy metering error value to obtain a correction value.

[0064] Optionally, the distribution terminal charges the power testing equipment, including: the distribution terminal dividing the time period into K sub-time periods according to the duration of the time period during which the power testing equipment needs to be charged, wherein the duration of each sub-time period is random; for the first sub-time period, the distribution terminal randomly determines a first charging power value from a preset first charging power range, and charges the power testing equipment with the first charging power value in the first sub-time period; subsequently, for the second sub-time period... The distribution terminal randomly determines a second charging power value from the preset second charging power range, and charges the power testing equipment with the second charging power value in the second sub-time period. The first charging power range and the second charging power range partially overlap. Then, in the third sub-time period of the K sub-time periods, the distribution terminal randomly determines a third charging power value from the first charging power range, and charges the power testing equipment with the third charging power value in the third sub-time period. This process continues until charging is completed in the K sub-time period.

[0065] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Exemplarily, the electronic device may be a network device, or a chip (system) or other component or assembly that can be disposed in a network device. Figure 4 As shown, the electronic device 400 may include a processor 401. Optionally, the electronic device 400 may also include a memory 402 and / or a transceiver 403. The processor 401 is coupled to the memory 402 and the transceiver 403, for example, via a communication bus.

[0066] The following is combined with Figure 4 A detailed description of each component of the electronic device 400 is provided below:

[0067] The processor 401 is the control center of the electronic device 400. It can be a single processor or a collective term for multiple processing elements. For example, the processor 401 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0068] Optionally, the processor 401 can perform various functions of the electronic device 400 by running or executing software programs stored in the memory 402 and calling data stored in the memory 402, such as performing the aforementioned functions. Figure 2 The method for monitoring power metering errors based on transformer substation terminals is shown.

[0069] In a specific implementation, as one example, processor 401 may include one or more CPUs, for example... Figure 4 CPU0 and CPU1 are shown in the diagram.

[0070] In a specific implementation, as one example, 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). Here, a processor may refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0071] The memory 402 is used to store the software program that executes the solution of the present invention, and is controlled by the processor 401 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0072] Optionally, the memory 402 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 402 may be integrated with the processor 401 or exist independently, and may be accessed through the interface circuit of the electronic device 400. Figure 4 (Not shown in the image) is coupled to processor 401, and this embodiment of the invention does not specifically limit this.

[0073] Transceiver 403 is used for communication with other electronic devices. For example, if electronic device 400 is a terminal, transceiver 403 can be used to communicate with a network device or with another terminal device. As another example, if electronic device 400 is a network device, transceiver 403 can be used to communicate with a terminal or with another network device.

[0074] Alternatively, transceiver 403 may include a receiver and a transmitter. Figure 4 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function.

[0075] Alternatively, the transceiver 403 can be integrated with the processor 401, or it can exist independently and be connected via the interface circuit of the electronic device 400. Figure 4 (Not shown in the image) is coupled to processor 401, and this embodiment of the invention does not specifically limit this.

[0076] Understandable, Figure 4 The structure of the electronic device 400 shown does not constitute a limitation on the electronic device. Actual electronic devices may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0077] Furthermore, the technical effects of the electronic device 400 can be referred to the technical effects of the methods described in the above method embodiments, and will not be repeated here.

[0078] It should be understood that the processor in the embodiments of the present invention can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0079] It should also be understood that the memory in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0080] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as 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, all or part of the processes or functions described in the embodiments of the present invention are generated. 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. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0081] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0082] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0083] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply 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.

[0084] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0085] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0086] In the embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0087] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0088] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0089] If the aforementioned functions are implemented as 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 this invention, or the part that contributes to the prior art, or a part 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 to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for monitoring electricity metering errors based on transformer substation terminals, characterized in that, The method is applied to a transformer terminal, and the method includes: In response to the power testing equipment being charged by the distribution terminal, the distribution terminal obtains the power metering values ​​obtained by each of the N power metering terminals measuring the power testing equipment, for a total of N power metering values, where N is an integer greater than or equal to 1; The transformer terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the transformer terminal and the N energy metering values. The distribution area terminal corrects the energy metering of each of the M energy metering terminals based on the energy metering errors of the N energy meters, wherein the M energy metering terminals include the N energy metering terminals, and M is an integer greater than N; Each of the M energy metering terminals is connected to the energy testing equipment; in response to the distribution area terminal charging the energy testing equipment, the distribution area terminal obtains the energy metering values ​​obtained by each of the N energy metering terminals measuring the energy testing equipment, including: In response to the completion of charging of the power testing equipment by the distribution terminal, the distribution terminal selects N power metering terminals that meet the topology conditions from the M power metering terminals, and obtains the power metering values ​​obtained by each of the N power metering terminals for metering the power testing equipment, for a total of N power metering values; The distribution terminal selects N energy metering terminals from the M energy metering terminals that meet the topology conditions, including: The transformer terminal selects at least two of the N energy metering terminals from the M energy metering terminals according to preset topology selection conditions and the topology connection relationship of the M energy metering terminals. The topology selection conditions indicate that the selected terminal needs to be connected to at least two other terminals. The transformer terminal charges the power testing equipment, including: The transformer terminal divides the time period into K sub-time periods according to the duration of the time period during which the power testing equipment needs to be charged, and the duration of each of the K sub-time periods is random. In the first sub-time period of the K sub-time periods, the transformer terminal randomly determines a first charging power value from a preset first charging power range, and charges the power testing equipment with the first charging power value in the first sub-time period. Subsequently, in the second sub-time period of the K sub-time periods, the transformer terminal randomly determines a second charging power value from a preset second charging power range, and charges the power testing equipment with the second charging power value in the second sub-time period, wherein the first charging power range and the second charging power range partially overlap. Subsequently, in the third sub-time period of the K sub-time periods, the transformer terminal randomly determines a third charging power value from the first charging power range, and charges the power testing equipment with the third charging power value in the third sub-time period, and so on, until the charging is completed in the K sub-time period.

2. The method according to claim 1, characterized in that, The distribution terminal obtains the energy metering values ​​from the N energy metering terminals, each of which measures the energy for the energy testing equipment. There are a total of N energy metering values, including: The transformer terminal sends a first message to each of the N power metering terminals. The first message includes the following information: the identifier of the power testing device, the time period during which the power testing device is charging, or a power metering acquisition request. The power metering acquisition request obtains the power metering value of the device being charged. The information is used to jointly instruct the device receiving the first message to provide the power metering value of the power testing device within the time period. The transformer terminal receives a second message returned by each of the N power metering terminals based on the first message, for a total of N second messages. Each of the N second messages contains: the power metering value obtained by one power metering terminal corresponding to the N power metering terminals during the time period when the power testing equipment is metered. The transformer terminal determines the N power metering values ​​from the N second messages.

3. The method according to claim 2, characterized in that, The distribution terminal determines the energy metering error of each of the N energy meters based on the energy charging value of the energy testing equipment charged by the distribution terminal and the N energy metering values, including: For the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the transformer terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal among the N energy metering values, where the difference #i is the energy metering error value of the i-th energy metering terminal. The transformer terminal determines the rate of change of the energy metering error of the i-th energy metering terminal based on the energy metering error value of the i-th energy metering terminal and the time period.

4. The method according to claim 3, characterized in that, The energy charging value is the energy charging value recorded locally by the distribution terminal during the charging process of the energy testing equipment by the distribution terminal. The distribution terminal determines the difference #i between the energy charging value and the energy metering value of the i-th energy metering terminal among the N energy metering values, including: The transformer terminal subtracts a preset charging loss value from the power charging value to obtain a corrected power charging value. The transformer terminal determines the difference #i between the corrected power charging value and the power metering value of the i-th power metering terminal.

5. The method according to claim 1, characterized in that, The distribution terminal corrects the energy metering of M energy metering terminals based on the energy metering errors of the N energy meters, including: For the i-th energy metering terminal among the N energy metering terminals, where i is any integer from 1 to N, the transformer terminal determines the i-th energy metering terminal and at least two energy metering terminals connected to the i-th energy metering terminal as the i-th energy metering terminal group. When i is traversed from 1 to N, a total of N energy metering terminal groups are determined. For the i-th energy metering terminal group among the N energy metering terminal groups, the distribution terminal sends an energy metering error #i to the i-th energy metering terminal in the i-th energy metering terminal group. The i-th energy metering terminal then sends the energy metering error #i to all other energy metering terminals in the i-th energy metering terminal group except for itself, so that each energy metering terminal in the i-th energy metering terminal group performs energy metering correction. The energy metering error #i is the energy metering error of the i-th energy metering terminal.

6. The method according to claim 5, characterized in that, The energy metering error #i is the rate of change of energy metering error #i. For the target energy metering terminal among the M energy metering terminals, the target energy metering terminal is any one of the M energy metering terminals. The target energy metering terminal is configured such that: if the target energy metering terminal receives a first energy metering error change rate, the target energy metering terminal multiplies the first energy metering error change rate by a first duration to obtain a first energy metering error value; the target energy metering terminal adds the first energy metering error value to the energy metering data collected at the current time t1 to obtain a correction value; the first duration is the duration between the current time t1 and the time t2 when the error correction was last performed or the initial time t3 when energy metering began. Alternatively, if the target energy metering terminal receives multiple energy metering error change rates, the target energy metering terminal determines whether the difference between the maximum and minimum values ​​of the multiple energy metering error change rates is greater than a preset difference threshold. If it is greater than the preset difference threshold, the target energy metering terminal determines the average of the multiple energy metering error change rates as the target energy metering error change rate; otherwise, it determines the minimum value of the multiple energy metering error change rates as the target energy metering error change rate. Based on this, the target energy metering terminal multiplies the target energy metering error change rate by the first duration to obtain the target energy metering error value. The target energy metering terminal then adds the target energy metering error value to the energy metering data collected at the current moment to obtain a correction value.

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