KR-102959830-B1 - POWER SENSOR

Abstract

The present invention is characterized by comprising a voltage sensor for detecting a voltage input to a power meter, and a processor for determining whether a predefined determination condition is satisfied within a first set time when at least one of the phase voltages of the power meter detected through the voltage sensor deviates from a reference voltage range, and determining that a power outage caused by the removal of the power meter has occurred if the determination condition is satisfied within the first set time.

Inventors

• 김상준
• 이성현
• 문일주

Assignees

• 한국전력공사

Dates

Publication Date

20260508

Application Date

20250522

Claims (1)

1. A voltage sensor that detects the voltage input to the power meter; and The processor includes a process that determines whether a predefined determination condition is satisfied within a first set time when at least one of the phase voltages of the power meter detected by the voltage sensor deviates from a reference voltage range, and determines that a power outage caused by the removal of the power meter has occurred if the determination condition is satisfied within the first set time. It further includes a cover detection sensor that detects whether the terminal cover provided in the above-mentioned power meter is open or closed, and The processor determines that the determination condition is satisfied when the opening of the terminal cover is detected through the cover detection sensor, and A terminal detection sensor that detects whether a pre-configured user terminal is accessed; Includes more, The processor determines that the determination condition is satisfied when access of the user terminal is detected through the terminal detection sensor, and A communication interface that communicates with the outside; Includes more, A power detection device characterized by the above processor determining that the above determination condition is satisfied when mutual authentication between a pre-configured user terminal and the power meter is completed through the above communication interface.

Description

Power Sensor The present invention relates to an electric power meter and a method of operating the same, and more specifically, to an electric power meter capable of distinguishing between a working power outage and a fault power outage and a method of operating the same. An electricity meter refers to a device that measures and records the amount of electricity consumed by electricity consumers in real time for the purpose of electricity trading. Such electricity meters may be removed due to reasons such as the termination of power supply contracts, the expansion of power facilities, or the expiration of the validity period designated by the Metering Act, or due to reasons such as malfunction, deterioration, or aging. On average, 2 million electricity meters are replaced or removed annually in Korea. Meanwhile, with the recent expansion of smart metering infrastructure, active development is underway regarding technologies to utilize electricity meters for power outage management. However, when electricity meters are replaced or removed, they inevitably experience a power outage. Conventionally, there has been a lack of technology capable of determining whether the outage experienced by the meter is a maintenance outage caused by replacement or removal work, or a fault outage caused by an abnormality in the system where the meter is installed. This serves as a constraint on the development of power outage management technologies utilizing electricity meters. Accordingly, there is a need for the development of technology capable of determining whether an outage experienced by an electricity meter is a fault outage or a maintenance outage. The background technology of the present invention is disclosed in the ‘Electronic Electricity Meter’ of Korean Registered Patent Publication No. 10-2280359 (July 16, 2021). FIG. 1 is a block diagram showing a power meter according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are illustrative diagrams for explaining a power meter according to an embodiment of the present invention. FIG. 4 is a flowchart showing the operation method of a power meter according to one embodiment of the present invention. Hereinafter, an electric meter and its operation method according to an embodiment of the present invention will be described in detail with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a block diagram showing an electric power meter according to an embodiment of the present invention, and FIG. 2 and FIG. 3 are illustrative diagrams for explaining an electric power meter according to an embodiment of the present invention. Hereinafter, an electric power meter according to an embodiment of the present invention will be described with reference to FIG. 1 to FIG. 3. First, referring to FIG. 1, a power meter according to one embodiment of the present invention may include a voltage sensor (100), a cover detection sensor (200), a terminal detection sensor (300), an input interface (400), a communication interface (500), a battery (600), a memory (700), and a processor (800). A power meter according to one embodiment of the present invention may include various additional components in addition to the components shown in FIG. 1, or may omit some of the above components. A voltage sensor (100) is provided in the power meter to detect the voltage input to the power meter and can output the detected voltage to a processor (800) described later. The voltage sensor (100) can detect the voltage for each of the three phases of the power meter. The voltage detected through the voltage sensor (100) can be used to determine whether an abnormality has occurred in the system where the power meter is installed, or to determine whether the system has been restored. A cover detection sensor (200) is provided in the power meter to detect whether a terminal cover (a safety cover for the connection point between the power supply and the load circuit in the power meter) provided in the power meter is open or closed, and can output the detection result to a processor (800). The cover detection sensor (200) may be a contact switch or a contact sensor that detects contact resulting from the closing of the terminal cover and outputs an electrical signal. However, the cover detection sensor (200) is not limited to the aforementioned embodiment, and various sensors capable of detecting whether the terminal cover is open or closed may be used as the cover detection sensor (200). Meanwhile, the open or closed status of the terminal detected through th