KR-20260065682-A - Method for connecting to Advanced Metering Infrastructure (AMI) and identifying fault in AMI using the same

KR20260065682AKR 20260065682 AKR20260065682 AKR 20260065682AKR-20260065682-A

Abstract

The present invention relates to a method for selectively connecting to an Advanced Metering Infrastructure (AMI) through a field terminal. An AMI connection method according to one embodiment of the present invention is an AMI connection method performed by a field terminal, characterized by comprising the steps of: converting the ID of a target AMI into a MAC address based on rules and attempting to connect using the MAC address; if the connection fails, distributing a request message containing the ID to a plurality of AMIs in the field; receiving a response message to the request message from the target AMI; and selecting a channel to connect to the target AMI and reconnecting using the MAC address through the channel.

Inventors

김재범
권성철
김우용
심명현
문종희

Assignees

한국전력공사

Dates

Publication Date: 20260511
Application Date: 20241101

Claims (16)

In an Advanced Metering Infrastructure (AMI) connection method performed by a field terminal, A step of converting the ID of a target AMI into a MAC address based on rules and attempting to connect using the said MAC address; If the above connection fails, a step of distributing a request message including the ID to multiple AMIs in the field; A step of receiving a response message for the request message from the target AMI; and A method comprising the step of selecting a channel to access the target AMI and reconnecting to the MAC address through the channel. AMI Connection Method
In paragraph 1, The above target AMI converts its ID based on the above rules to pre-set its MAC address. AMI Connection Method
In paragraph 1, The above ID consists of a manufacturer code and an identification number, and The step of converting the above ID into a MAC address includes converting the above manufacturer code into ASCII and configuring the MAC address using the ASCII and the identification number. AMI Connection Method
In paragraph 3, The step of configuring the MAC address includes the step of padding the remaining bits, excluding the ASCII and identification number among the bits configuring the MAC address, with a preset value. AMI Connection Method
In paragraph 1, A step of distributing a search message to multiple AMIs in the field to obtain MAC addresses from the multiple AMIs; and The method further includes the step of identifying the ID of the target AMI by inversely converting the acquired MAC address based on the rule. AMI Connection Method
In paragraph 1, The step of attempting the above connection includes the step of attempting to connect to the MAC address through a channel pre-allocated to the target AMI. AMI Connection Method
In paragraph 1, The step of distributing the above request message includes the step of distributing a request message containing a part of the ID and a wildcard character. AMI Connection Method
In paragraph 1, The step of receiving the above response message includes the step of receiving a response message that includes the ID of the target AMI and optionally includes the ID of a communication device connected to the target AMI. AMI Connection Method
In paragraph 1, The step of selecting the channel includes scanning all connectable channels and selecting the channel with the fewest number of occupied devices. AMI Connection Method
In paragraph 1, The above target AMI receives a channel change request from the above field terminal during remote metering, saves current communication status information, and then changes the communication channel to the above selected channel. AMI Connection Method
In Paragraph 10, If the above target AMI does not receive a message from the field terminal for a preset time after a channel change, it restores communication based on the stored communication status information. AMI Connection Method
In a method for identifying Advanced Metering Infrastructure (AMI) faults performed by a field terminal, A step of connecting to a target AMI according to the AMI connection method of any one of paragraphs 1 to 11; A step of requesting information of a device connected to the target AMI from the target AMI; A step of generating graph structure data by defining the connection relationship between the target AMI and the device as an edge; and A step of identifying a failure of the target AMI based on state information for the edge. AMI failure identification method.
In Paragraph 12, The above status information includes at least one of the communication success rate, link duration, and power quality between the AMI and the device. AMI failure identification method.
In Paragraph 12, The method further includes the step of outputting an interface containing the graph structure data and the state information through a display. AMI failure identification method.
In Paragraph 12, The step of identifying the above fault includes setting state information for all edges as a population and identifying the fault of the target AMI based on the population standard deviation of the state information for each edge. AMI failure identification method.
In Paragraph 12, The method further includes the step of transmitting a recovery command to the target AMI where the above-mentioned fault has been identified. AMI failure identification method.

Description

Method for connecting to Advanced Metering Infrastructure (AMI) and identifying fault in AMI using the same The present invention relates to a method for selectively connecting to an Advanced Metering Infrastructure (AMI) through a field terminal and a method for identifying a failure of an AMI based on status information collected from the AMI. Korea Electric Power Corporation plans to supply 22 million units of intelligent electricity meters capable of wired and wireless communication (hereinafter, Advanced Metering Infrastructure (AMI)) by 2024 and is exploring various methods to maintain them in the field. Previously, engineers obtained target AMI information for the monitoring area from a top-level server, transmitted connection requests to all wireless communication channels to locate the target AMI in the field, received response messages from all AMIs, and identified the target AMI through the identification information within the response messages. However, when the above method was attempted in the actual field, there was a problem where AMI search could not be performed normally as the number of AMIs in the field increased, due to information loss caused by interference between channels or collisions between response messages. In addition, since the address schemes used by the communication modem and the SW of the AMI are different, in order for an engineer to search for a specific AMI, they must first find the address of the communication modem (e.g., MAC address), securely connect to the SW through that address, and then identify the unique identifier of the AMI (e.g., ID). However, if there are many AMIs installed in the field, the aforementioned procedure must be repeated for each AMI, which causes a problem in that it takes a long time to connect to a specific AMI. FIG. 1 is a drawing illustrating an AMI fault identification system according to one embodiment of the present invention. FIG. 2 is a flowchart illustrating an AMI connection method according to an embodiment of the present invention. FIG. 3 is a flowchart illustrating the process of a field terminal connecting to a target AMI that is performing remote metering through communication equipment. Figure 4 is a diagram illustrating the process of converting the ID of a target AMI into a MAC address. FIG. 5 is a diagram illustrating a request message distributed by a target terminal to multiple AMIs. FIGS. 6 and FIGS. 7 are drawings illustrating each example of a response message to a request message. FIG. 8 is a flowchart illustrating an AMI fault identification method according to an embodiment of the present invention. FIG. 9 is a diagram illustrating graph structure data used for fault identification. The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components. In this specification, terms such as "first," "second," etc. are used to describe various components, but these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may be the second component. Additionally, in this specification, the statement that any configuration is disposed on the "upper (or lower)" or "upper (or lower)" of a component may mean not only that any configuration is disposed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration disposed on (or below) said component. Furthermore, where it is stated in this specification that one component is "connected," "coupled," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "coupled," or "connected" through another component. Additionally, singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may not be included, or that additional components or steps