CN-116349141-B - Arc detection system, arc detection method, and program recording medium

Abstract

The arc detection system (100) is provided with a first acquisition unit (11), a second acquisition unit (12), and a determination unit (13). The first acquisition unit (11) acquires the measurement result of the current (I1) flowing through the power supply path (L1) through which power is supplied from the power source (2), or the voltage (V1) in the power supply path (L1). A second acquisition unit (12) acquires operation information relating to the operation of the device (3) connected to the power supply path (L1). A determination unit (13) determines whether or not an arc fault has occurred in the power supply path (L1) based on the measurement result obtained by the first acquisition unit (11) and the operation information obtained by the second acquisition unit (12).

Inventors

• TATSUYA TAKAHASHI
• Gu Hedaxiong

Assignees

• 松下知识产权经营株式会社

Dates

Publication Date

20260505

Application Date

20211005

Priority Date

20201029

Claims (6)

1. 1. An arc detection system, comprising: A first acquisition unit that acquires a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path; A second acquisition unit for acquiring operation information related to the operation of the device connected to the power supply path, and A determination unit configured to determine whether or not an arc fault has occurred in the power supply path based on the measurement result obtained by the first obtaining unit and the operation information obtained by the second obtaining unit, The action information indicates a communication status with the device, The determination unit determines that the arc fault has not occurred when it is determined that an arc has occurred based on the measurement result obtained by the first obtaining unit and the communication state indicated by the operation information is changed before and after the determination.
2. 2. The arc detection system of claim 1 wherein, The second acquisition unit further acquires, as the operation information, drive information indicating whether or not a communication function between the device and the second acquisition unit is driven by a battery, When the communication function between the device and the second acquisition unit is driven by the battery, the determination unit determines whether or not an arc fault has occurred in the power supply path without referring to the communication state.
3. 3. An arc detection system, comprising: A first acquisition unit that acquires a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path; A second acquisition unit for acquiring operation information related to the operation of the device connected to the power supply path, and A determination unit configured to determine whether or not an arc fault has occurred in the power supply path based on the measurement result obtained by the first obtaining unit and the operation information obtained by the second obtaining unit, When it is determined that the arc has occurred in the first power supply unit, based on the measurement result obtained by the first obtaining unit, the determining unit determines that the arc fault has occurred, independently of the operation information obtained by the second obtaining unit.
4. 4. An arc detection method, comprising: A first acquisition step of acquiring a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path; A second acquisition step of acquiring operation information relating to an operation of the device connected to the power supply path, and A determination step of determining whether or not an arc fault has occurred in the power supply path based on the measurement result obtained in the first obtaining step and the operation information obtained in the second obtaining step, The action information indicates a communication status with the device, In the determining step, when it is determined that an arc has occurred based on the measurement result obtained in the first obtaining step and the communication state indicated by the operation information is changed before and after the determination, it is determined that the arc fault has not occurred.
5. 5. An arc detection method, comprising: A first acquisition step of acquiring a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path; A second acquisition step of acquiring operation information relating to an operation of the device connected to the power supply path, and A determination step of determining whether or not an arc fault has occurred in the power supply path based on the measurement result obtained in the first obtaining step and the operation information obtained in the second obtaining step, In the determining step, when it is determined that the arc has occurred in the time period equal to or longer than a threshold time period based on the measurement result obtained in the first obtaining step, it is determined that the arc fault has occurred, independently of the operation information obtained in the second obtaining step.
6. 6. A program recording medium recording a program, wherein the program causes one or more processors to execute the arc detection method according to claim 4 or 5.

Description

Arc detection system, arc detection method, and program recording medium Technical Field The present invention relates to an arc detection system, an arc detection method, and a program recording medium for determining whether or not there is a possibility of arc faults occurring in a power supply path. Background Patent document 1 discloses an arc detection unit for detecting an arc. The arc detection unit includes a voltage detection unit that measures a voltage value between an input-side wiring to the terminal block and an output-side wiring from the terminal block, and a current detection unit that measures a current value from the output-side wiring of the terminal block. In this arc detection means, the fluctuation of the voltage value of the voltage detection means and the fluctuation of the current value of the current detection means are detected simultaneously, whereby the arc in the terminal block and the electrical noise are recognized. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2011-7765 Disclosure of Invention Problems to be solved by the invention The invention provides an arc detection system, an arc detection method and a program recording medium, which are easy to prevent false detection of arc faults. Means for solving the problems An arc detection system according to an embodiment of the present invention includes a first acquisition unit, a second acquisition unit, and a determination unit. The first acquisition unit acquires a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path. The second acquisition unit acquires operation information related to an operation of a device connected to the power supply path. The determination unit determines whether or not an arc fault has occurred in the power supply path based on the measurement result obtained by the first obtaining unit and the operation information obtained by the second obtaining unit. The arc detection method according to one embodiment of the present invention includes a first acquisition step, a second acquisition step, and a determination step. In the first obtaining step, a measurement result of a current flowing through a power supply path to which power is supplied from a power source or a voltage in the power supply path is obtained. In the second acquisition step, operation information on an operation of the device connected to the power supply path is acquired. In the determining step, it is determined whether or not an arc fault has occurred in the power supply path based on the measurement result obtained in the first obtaining step and the operation information obtained in the second obtaining step. A program recording medium according to an embodiment of the present invention records a program for causing one or more processors to execute the arc detection method. ADVANTAGEOUS EFFECTS OF INVENTION According to one embodiment of the present invention, there is an advantage that erroneous detection of the occurrence of arc faults is easily prevented. Drawings Fig. 1 is a schematic diagram showing the overall configuration of an arc detection system including embodiment 1. Fig. 2A is a timing chart showing a first example of determination by the determination unit of the arc detection system according to embodiment 1. Fig. 2B is a timing chart showing a second determination example of the determination unit of the arc detection system according to embodiment 1. Fig. 2C is a timing chart showing a third example of determination by the determination unit of the arc detection system according to embodiment 1. Fig. 3 is a flowchart showing an example of the operation of the arc detection system according to embodiment 1. Fig. 4 is a schematic diagram showing the overall configuration of an arc detection system including embodiment 2. Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below each represent one specific example of the present invention. Accordingly, the numerical values, shapes, materials, components, arrangement positions of components, connection methods, steps, order of steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. The drawings are schematic and are not necessarily strictly illustrated. In the drawings, substantially the same structures are denoted by the same reference numerals, and overlapping description is omitted or simplified. (Embodiment 1) Structure An arc detection system according to embodiment 1 will be described with reference to fig. 1. Fig. 1 is a schematic diagram showing the overall configuration of an arc detection system 100 including embodiment 1. The arc detection system 100 is a system for determining whether an arc fault has occurred in a power supply path L1 to