WO2015072601A1 - Apparatus and method for determining partial discharge - Google Patents

Apparatus and method for determining partial discharge Download PDF

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Publication number
WO2015072601A1
WO2015072601A1 PCT/KR2013/010358 KR2013010358W WO2015072601A1 WO 2015072601 A1 WO2015072601 A1 WO 2015072601A1 KR 2013010358 W KR2013010358 W KR 2013010358W WO 2015072601 A1 WO2015072601 A1 WO 2015072601A1
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WO
WIPO (PCT)
Prior art keywords
power device
partial discharge
power
adjacent
devices
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PCT/KR2013/010358
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French (fr)
Korean (ko)
Inventor
백피터
임인식
Original Assignee
(주)파워피디
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Priority to PCT/KR2013/010358 priority Critical patent/WO2015072601A1/en
Priority to KR1020167015843A priority patent/KR101803252B1/en
Publication of WO2015072601A1 publication Critical patent/WO2015072601A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Definitions

  • the present invention relates to a partial discharge determination device and method.
  • the partial discharge signal generated in a specific power device may affect the adjacent power device, and thus a partial discharge interference phenomenon may occur in which the partial discharge signal is detected in the adjacent power device.
  • a power device that detects a partial discharge signal may be a power device that does not generate a partial discharge. Due to the partial discharge interference phenomenon, it was difficult to accurately determine whether the partial discharge occurred due to insulation deterioration in which power device.
  • the apparatus for determining partial discharge includes an information collection unit for collecting partial discharge information of each power device in which the partial discharge signal is detected; And a controller configured to analyze a partial discharge pattern of each of the power devices based on the collected partial discharge information and determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists. If there is a combination of power devices having a partial discharge pattern similarity equal to or more than a predetermined value, the power device forming the combination is selected, the first power device in which the largest partial discharge signal is detected among the selected power devices is detected, and the first power device is detected. Based on the power device, a reference power device as a reference for the partial discharge determination is selected, and based on the first power device or the reference power device, the power device having the partial discharge generating power device and the partial discharge interference is determined. .
  • the controller may determine a type of insulation degradation that generates the partial discharge signal based on the partial discharge pattern analysis.
  • the control unit determines that the partial discharge pattern is a conductor protrusion discharge when the negative potential includes more than the positive potential, and the enclosure protrusion discharge when the positive discharge includes more than the negative potential, and equalizes the positive potential and the negative potential. If included, it may be determined that the void discharge.
  • the controller may determine each of the power devices in which the partial discharge signal is detected as a partial discharge generating power device.
  • the controller determines whether the first power device and the power device adjacent to the first power device are connected, and when the first power device and the power device adjacent to the first power device are not connected, the reference power device. You can judge that there is no.
  • the controller determines whether the first power device and the power device adjacent to the first power device are connected, and when the first power device and the power device adjacent to the first power device are not connected or the first power device is connected. Even when a power device and a power device adjacent to the first power device are connected, the magnitude of the partial discharge signal generated by the first power device is not greater than the magnitude of the partial discharge signal generated by the power device adjacent to the first power device. In this case, it may be determined that there is no reference power device.
  • the controller determines a connection type between the first power device and the power device adjacent to the first power device when the first power device and the power device adjacent to the first power device are connected, and the first power device. And a connection type of a power device adjacent to the first power device sharing the ground, the power device adjacent to the first power device may be selected as the reference power device.
  • the controller selects a power device adjacent to the first power device as a second power device when the connection form between the first power device and the power device adjacent to the first power device is connected while sharing a line. 2 determining whether the power device and the power device adjacent to the second power device satisfy the interference occurrence condition, and the second power device and the power device adjacent to the second power device do not satisfy the interference occurrence condition.
  • the second power device may be selected as a reference power device.
  • the controller may determine the second power device by inserting the power device adjacent to the second power device again. have.
  • the interference occurrence condition may include that the partial discharge signal detected by the second power device is connected to share the line with the second power device.
  • the interference occurrence condition may further include that the partial discharge signal detected by the second power device is greater than the partial discharge signal detected by the power device adjacent to the second power device.
  • the controller determines that a power device except for the first power device is a power device in which partial discharge interference is generated among power devices connected from the first power device to the reference power device, and the power in which the partial discharge signal is detected.
  • the power device except for the power device in which the partial discharge interference is generated may be determined as the partial discharge generating power device.
  • Partial discharge determination method comprises the steps of collecting the partial discharge information of each power device is detected a partial discharge signal; Analyzing a partial discharge pattern of each power device based on the collected partial discharge information to determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists; If a combination of power devices having partial discharge pattern similarity equal to or greater than the predetermined value exists, selecting a power device making up the combination; Finding a first power device in which the largest partial discharge signal is detected among the selected power devices; Selecting a reference power device as a reference for partial discharge determination based on the first power device; And determining, based on the first power device or the reference power device, a power device having a partial discharge generating power device and an interference of the partial discharge.
  • the step of selecting a reference power device based on the first power device may include determining whether a connection is made between the first power device and a power device adjacent to the first power device; And determining that there is no reference power device when the first power device and the power device adjacent to the first power device are not connected.
  • the determining of the connection between the first power device and a power device adjacent to the first power device may include: connecting the first power device and the power device adjacent to the first power device to the first power device; Determining a connection type of a power device adjacent to the first power device; And selecting a power device adjacent to the first power device as a reference power device when a connection form between the first power device and a power device adjacent to the first power device is connected while sharing a ground. have.
  • determining the connection type between the first power device and the power device adjacent to the first power device may include the first power device and the Selecting a power device adjacent to the first power device as a second power device when a connection type of the power device adjacent to the first power device is connected while sharing a line; Determining whether the second power device and a power device adjacent to the second power device satisfy an interference occurrence condition; And when the second power device and a power device adjacent to the second power device do not satisfy the interference occurrence condition, selecting the second power device as a reference power device.
  • the determining of whether the second power device and the power device adjacent to the second power device satisfies the interference occurrence condition may include the second power device and the power device adjacent to the second power device meeting the interference occurrence condition. In this case, it may be determined again by substituting the power device adjacent to the second power device into the second power device.
  • the step of determining the power device in which the partial discharge generating power device and the partial discharge have occurred may be performed by each of the power devices connected from the first power device to the reference power device.
  • the power device except for the first power device is determined to be a power device in which the partial discharge interference is generated, and the power device except the power device in which the partial discharge interference is generated among the power devices in which the partial discharge signal is detected may generate partial discharge power. Judging by the device.
  • connection period and the connection type Based on the connection period and the connection type according to the embodiment of the present invention, it is possible to determine a power device in which partial discharge and partial discharge interference are generated.
  • FIG. 1 is a block diagram of a group of power devices according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing a partial discharge determination apparatus according to an embodiment of the present invention.
  • 3 and 4 are flowcharts of a partial discharge determination method according to an embodiment of the present invention.
  • FIG. 1 is a block diagram of a group of power devices according to an embodiment of the present invention.
  • the power device group 100 includes a plurality of power devices 300a to 300h.
  • the power device group 100 according to the embodiment of the present invention includes a plurality of power devices 300a to 300h from which a partial discharge signal is generated.
  • the power device may be connected while sharing a line, or may be connected (A1 and A2) while sharing a ground line.
  • the line according to the embodiment of the present invention may be a high voltage line.
  • the partial discharge signal when the power devices A1 and A2 are connected with the ground in common, the partial discharge signal may be moved on the ground.
  • the distance between power devices to which the partial discharge signal may be transmitted may be within 4 meters.
  • the partial discharge signal transmitted through the ground cannot move to another power device through the line or conductor of the received power device.
  • the electric power period may be connected by a line.
  • the connection of a power device via a line may mean that an electric closed loop is formed.
  • the partial discharge signal may be transmitted over a long distance through the line of the power device.
  • the separation distance between the power devices to which the partial discharge signal may be transmitted may be within 50 meters.
  • the line connecting the power devices is a busbar type (Busbar) type
  • the separation distance between the power devices that can be transmitted to the partial discharge signal can be unlimited.
  • the power devices 300a to 300h may be one of the devices configuring the power system, such as an electric motor or a high voltage circuit breaker (MCSG).
  • MCSG high voltage circuit breaker
  • FIG. 2 is a block diagram showing a partial discharge determination apparatus according to an embodiment of the present invention.
  • the partial discharge determining apparatus 200 determines the partial discharge generated in the power device group 100 or determines the interference of the partial discharge.
  • the partial discharge determining apparatus 200 detects a partial discharge signal generated by the power devices 300a to 300h of the power device group 100.
  • the partial discharge is determined based on the partial discharge information of the power devices 300a to 300h of the power device group 100, or the interference of the partial discharge is determined.
  • the partial discharge determination apparatus 200 includes a control unit 210, an information collection unit 220, a storage unit 230, and a display unit 240. However, since the components illustrated in FIG. 2 are not essential, the partial discharge determining apparatus 200 having more components or fewer components may be implemented.
  • the controller 210 controls the overall operation of the partial discharge determination apparatus 200.
  • the controller 210 may determine a power device in which partial discharge occurs or a power device in which interference of partial discharge occurs based on the partial discharge information.
  • the control unit 210 according to an embodiment of the present invention is based on the power device in which the largest partial discharge signal is detected among the power devices and the reference power device that is the reference for the partial discharge determination, and the interference between the partial discharge generating power device and the partial discharge is reduced. The power device that occurred can be determined.
  • the information collecting unit 220 collects partial discharge information of the power device in which the partial discharge signal is detected.
  • the partial discharge information may include the size, pattern, phase, number of partial discharge signals.
  • the storage unit 230 stores partial discharge information of the power device in which the partial discharge signal is detected.
  • the storage unit 230 may store the result determined by the control unit 210.
  • the storage unit 230 may store the determination result of the power device in which the partial discharge occurred or the power device in which the partial discharge occurred.
  • the storage unit 230 may store pattern characteristics (hereinafter, referred to as a partial discharge pattern) of the partial discharge signal generated due to insulation degradation.
  • the display unit 240 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display ), And may include at least one of a 3D display.
  • the display unit 240 according to an exemplary embodiment of the present invention may output the result determined by the controller 210.
  • 3 and 4 are flowcharts of a partial discharge determination method according to an embodiment of the present invention.
  • a of FIG. 3 and A of FIG. 4 are connected, and B of FIG. 3 and B of FIG. 4 are connected.
  • the information collecting unit 220 collects partial discharge information of the power device in which the partial discharge signal is detected (S103).
  • S103 partial discharge information of the power device in which the partial discharge signal is detected.
  • the controller 210 analyzes the partial discharge pattern for the power devices 300a to 300h in which the partial discharge signal is detected based on the partial discharge information.
  • the controller 210 may determine the type of insulation degradation that generates the divided discharge signal based on the partial discharge pattern analysis.
  • the controller 210 determines that the discharge of the protrusion of the conductor is generated in the conductive protrusion of the power device when the partial discharge signal includes the negative potential more than the positive potential.
  • the controller 210 determines that the discharge of the protrusion of the enclosure is generated in an enclosure protrusion of the power device when the partial discharge signal includes more of the positive potential than the negative potential.
  • the controller 210 determines that the discharge is a void discharge generated in the void when the positive potential and the negative potential are equally included.
  • the control unit 210 may determine the type of insulation degradation based on the partial discharge pattern because the start voltage of the partial discharge signal also varies according to the generation position of the partial discharge signal of the power device under the influence of the AC power source.
  • the controller 210 determines whether there is a combination of power devices having partial discharge pattern oiliness of a predetermined value or more (S107).
  • the predetermined value may be 85%. That is, the controller 230 determines whether a combination of power devices having similar shapes of the partial discharge signals exists.
  • the controller 230 determines that the power device in which the partial discharge signal is detected is the power device in which the partial discharge is generated (S109).
  • the controller 210 selects a combination of power devices having partial discharge pattern similarity of a predetermined value or more (S111).
  • S111 a combination of power devices having similar forms of the partial discharge signal
  • the controller 210 ranks the selected power devices 300a to 300h based on the magnitude of each partial discharge signal generated by each power device 300a to 300h, that is, detected by the partial discharge determination device 200. To give (S113). In this process, the controller 210 selects a power device having the largest magnitude of the detected partial discharge signal.
  • the ranking based on the magnitude of the partial discharge signal may be in descending order of the magnitude of the partial discharge signal.
  • the magnitude of the detected partial discharge signal is the power device 300a, the power device 300b, the power device 300c, the power device 300d, the power device 300e, the power device 300f, and the power device 300g.
  • the power device 300h is reduced in order.
  • the present invention is not limited thereto.
  • the power device 300a having the largest magnitude of the detected partial discharge signal will be described as the first power device 300a.
  • the controller 210 determines whether the first power device 300a and the first power device and the adjacent power devices 300b, 300c, and 300e are connected (S114).
  • the term “adjacent period” may mean that no other power device exists between two power devices.
  • the controller 210 controls all the power devices 300a to 300h for which the partial discharge detection signal is detected. Judging by the device.
  • the controller 210 forms a connection between the first power device 300a and the adjacent power devices 300b, 300c, and 300e. Determine (S115). At this time, the control unit 210 determines the connected power devices (300b, 300c) as the partial discharge interference power device sharing the ground with the first power device (300a). That is, the controller 210 selects the power devices 300b and 300c as the power devices, that is, the reference power devices, as the reference for the partial discharge interference.
  • the controller 210 may not determine the power devices 300b and 300c as the partial discharge interference generating power device, but may determine the power devices 300b and 300c as the partial discharge generating power device. In this case, the controller 210 determines that there is no reference power device.
  • the control unit 210 is a power device in which the power device except the first power device 300a among the power devices connected from the first power device 300a to the reference power device has generated partial discharge interference.
  • control unit 210 shares the line with any one of the power device (300b, 300c) and the connected power device (d) does not determine that the partial discharge interference generated power device, partial discharge occurs It is determined that the power device. This is because the partial discharge signal transmitted through the ground cannot move to another power device through the line or conductor of the received power device.
  • the controller 210 shares the line with the first power device 300a and interferes with the power device 300g adjacent to the second power device 300e by using the connected power device 300e as the second power device 300e. It is determined whether the occurrence condition is satisfied (S116). At this time, according to an embodiment of the present invention, the controller 210 shares the line with the first power device 300a and determines the connected power device 300e as the partial discharge interference generating power device.
  • the controller 210 when the magnitude of the partial discharge signal generated by the first power device 300a shares a line and the magnitude of the partial discharge signal generated by the connected power device 300e is small, the controller 210
  • the power device 300e may not be determined as the partial discharge interference generating power device, but may be determined as the partial discharge generating power device.
  • the controller 210 shares the line with the power device 300e and determines that the connected power device 300g does not determine that the partial discharge interference has occurred, but is a power device that has generated partial discharge. In this case, the controller 210 selects the power device 300e as a reference power device.
  • the controller 210 controls the second power device 300e with the second power device.
  • the power device 300g adjacent to 300e is substituted, and the newly inserted second power device 300g and the power device 300f and 300h adjacent to the newly inserted second power device 300g are used to detect the interference occurrence condition. Determine whether it is satisfied (S117).
  • the controller 210 repeats steps S116 and S117 to determine a power device that does not satisfy the interference occurrence condition. In this case, the controller 210 selects a power device that does not satisfy the interference occurrence condition as a reference power device.
  • the partial discharge signal detected by the second power device is connected to share the line with the second power device, or the partial discharge signal detected by the second power device is the second power device. It includes greater than the partial discharge signal detected by the power device adjacent to.
  • the separation distance between the power devices may be within 50 meters.
  • the reference power device may be a power device 300f.
  • the controller 210 selects the power device 300g as the reference power device. can do.
  • the controller 210 determines a partial discharge occurrence or a partial discharge interference power device based on the reference power device and the first power device 300a (S119).
  • the controller 210 is a power device in which partial discharge interference occurs in the power device except the first power device 300a among the respective power devices connected from the first power device 300a to the reference power device.
  • the power device except for the power device having the partial discharge interference among the power devices 300a to 300h in which the partial discharge signal is detected is determined as the partial discharge generating power device.
  • the controller 210 may connect the respective power devices 300a, 300b, 300b, 300b, 300c, and 300f to the reference power devices 300b, 300c, and 300f.
  • the power devices 300b, 300c, 300e, 300g, and 300f except for the first power device 300a are determined to be power devices in which partial discharge interference is generated, and a partial discharge signal is detected.
  • the power devices 300d, 300a and 300h except for the power devices 300b, 300c, 300e, 300g, and 300f in which the partial discharge interference is generated are determined as the partial discharge generating power devices.
  • the controller 230 stores information on the occurrence or interference of the partial discharge in the storage 210 (S121).
  • the display unit 240 may output various types of information based on the information stored in the storage unit 210.

Abstract

An apparatus for determining partial discharge according to an embodiment of the present invention comprises: an information collecting unit which collects partial discharge information of each of power devices for which a partial discharge signal has been sensed; and a control unit which analyzes the partial discharge pattern of each of the power devices on the basis of the collected partial discharge information, and which determines whether there is any combination of power devices having a partial discharge pattern similarity of more than a predetermined level, and, in the present invention, if there is any combination of power devices having the partial discharge pattern similarity of more than the predetermined level, the control unit: selects the power devices forming the combination; searches for a first power device for which the largest partial discharge signal has been sensed among the selected power devices; chooses a reference power device constituting a reference for determining the partial discharge on the basis of the first power device; and determines the power device producing the partial discharge and the power device in which partial discharge interference has occurred, on the basis of the first power device or the reference power device.

Description

부분방전 판단 장치 및 방법Partial discharge judgment device and method
본 발명은 부분방전 판단 장치 및 방법에 관한 것 이다.The present invention relates to a partial discharge determination device and method.
복수의 전력기기가 포함된 전력기기 시스템이 운용됨에 있어서, 특정 전력기기에서 절연열화에 발생하게 되면, 부분방전이 발생하게 되고 부분방전 신호가 발생된다. 그런데 이러한 부분방전 신호는 고주파 특성을 가지고 있다. 따라서 이러한 부분방전 신호에 기초하여 절연열화가 일어난 전력기기를 판단하고 있다.In the operation of a power device system including a plurality of power devices, when the insulation deterioration occurs in a specific power device, partial discharge occurs and a partial discharge signal is generated. However, these partial discharge signals have high frequency characteristics. Therefore, based on the partial discharge signal, the power device in which insulation degradation has occurred is determined.
그러나 특정 전력기기에서 발생된 부분방전 신호는 인접 전력기기에 영향을 미쳐 인접 전력기기에서 부분방전 신호가 감지되는 부분방전 간섭 현상이 일어날 수 있다. 즉 부분방전 신호가 감지되는 전력기기라도 부분방전이 발생되지 않은 전력기기 일 수 있었다. 이러한 부분방전 간섭 현상으로 어느 전력기기에서 절연열화가 발생되어 부분방전이 발생되었는지를 정확하게 판단하기 어려운 문제가 있었다. However, the partial discharge signal generated in a specific power device may affect the adjacent power device, and thus a partial discharge interference phenomenon may occur in which the partial discharge signal is detected in the adjacent power device. In other words, even a power device that detects a partial discharge signal may be a power device that does not generate a partial discharge. Due to the partial discharge interference phenomenon, it was difficult to accurately determine whether the partial discharge occurred due to insulation deterioration in which power device.
본 발명이 해결하고자 하는 과제는 부분방전 또는 부분방전 간섭이 발생된 전력기기를 판단하는 장치 및 방법을 제공하는 것이다.It is an object of the present invention to provide an apparatus and method for determining a power device in which partial discharge or partial discharge interference occurs.
본 발명의 실시예에 따른 부분방전 판단 장치는 부분방전 신호가 감지된 전력기기 각각의 부분방전 정보를 수집하는 정보 수집부; 및 수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 제어부를 포함하고, 상기 제어부는 상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재한다면, 상기 조합을 이루는 전력기기를 선택하고, 선택된 전력기기 중 가장 큰 부분방전 신호가 감지된 제1 전력기기를 찾고, 상기 제1 전력기기에 기초하여 부분방전 판단의 기준이 되는 기준 전력기기를 선정하고, 상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단한다.The apparatus for determining partial discharge according to an embodiment of the present invention includes an information collection unit for collecting partial discharge information of each power device in which the partial discharge signal is detected; And a controller configured to analyze a partial discharge pattern of each of the power devices based on the collected partial discharge information and determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists. If there is a combination of power devices having a partial discharge pattern similarity equal to or more than a predetermined value, the power device forming the combination is selected, the first power device in which the largest partial discharge signal is detected among the selected power devices is detected, and the first power device is detected. Based on the power device, a reference power device as a reference for the partial discharge determination is selected, and based on the first power device or the reference power device, the power device having the partial discharge generating power device and the partial discharge interference is determined. .
상기 제어부는 상기 부분방전 패턴 분석에 기초하여 상기 부분방전 신호를 발생시키는 절연열화 유형을 판단할 수 있다.The controller may determine a type of insulation degradation that generates the partial discharge signal based on the partial discharge pattern analysis.
상기 제어부는 상기 부분방전 패턴이, 음전위를 양전위보다 많이 포함하는 경우 도체 돌출부 방전이라 판단하고, 상기 양전위를 상기 음전위보다 많이 포함하는 경우 인클로저 돌출부 방전이라 판단하고, 상기 양전위와 상기 음전위를 균등하게 포함하는 경우 보이드 방전이라고 판단할 수 있다.The control unit determines that the partial discharge pattern is a conductor protrusion discharge when the negative potential includes more than the positive potential, and the enclosure protrusion discharge when the positive discharge includes more than the negative potential, and equalizes the positive potential and the negative potential. If included, it may be determined that the void discharge.
상기 제어부는 상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하지 않는 다면, 상기 부분방전 신호가 감지된 전력기기 각각을 부분방전 발생 전력기기로 판단할 수 있다.If there is no combination of power devices having a partial discharge pattern similarity equal to or greater than the predetermined value, the controller may determine each of the power devices in which the partial discharge signal is detected as a partial discharge generating power device.
상기 제어부는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 상기 기준 전력기기는 없다고 판단할 수 있다.The controller determines whether the first power device and the power device adjacent to the first power device are connected, and when the first power device and the power device adjacent to the first power device are not connected, the reference power device. You can judge that there is no.
상기 제어부는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 또는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있어도 상기 제1 전력기기에서 발생된 부분방전 신호의 크기가 상기 제1 전력기기에 인접한 전력기기에서 발생된 부분방전 신호의 크기보다 크지 않은 경우, 상기 기준 전력기기는 없다고 판단할 수 있다.The controller determines whether the first power device and the power device adjacent to the first power device are connected, and when the first power device and the power device adjacent to the first power device are not connected or the first power device is connected. Even when a power device and a power device adjacent to the first power device are connected, the magnitude of the partial discharge signal generated by the first power device is not greater than the magnitude of the partial discharge signal generated by the power device adjacent to the first power device. In this case, it may be determined that there is no reference power device.
상기 제어부는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 접지를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 기준 전력기기로 선정할 수 있다.The controller determines a connection type between the first power device and the power device adjacent to the first power device when the first power device and the power device adjacent to the first power device are connected, and the first power device. And a connection type of a power device adjacent to the first power device sharing the ground, the power device adjacent to the first power device may be selected as the reference power device.
상기 제어부는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 선로를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 제2 전력기기로 선택하고, 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하고, 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키지 않는 경우, 상기 제2 전력기기를 기준 전력기기로 선정할 수 있다.The controller selects a power device adjacent to the first power device as a second power device when the connection form between the first power device and the power device adjacent to the first power device is connected while sharing a line. 2 determining whether the power device and the power device adjacent to the second power device satisfy the interference occurrence condition, and the second power device and the power device adjacent to the second power device do not satisfy the interference occurrence condition. The second power device may be selected as a reference power device.
상기 제어부는 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는 경우, 상기 제2 전력기기에 상기 제2 전력기기에 인접한 전력기기를 대입하여 다시 판단할 수 있다.When the second power device and a power device adjacent to the second power device satisfy the interference occurrence condition, the controller may determine the second power device by inserting the power device adjacent to the second power device again. have.
상기 간섭 현상 발생 조건은 상기 제2 전력기기가 감지된 부분방전 신호가 상기 제2 전력기기와 선로를 공유하며 연결될 것을 포함할 수 있다.The interference occurrence condition may include that the partial discharge signal detected by the second power device is connected to share the line with the second power device.
상기 간섭 현상 발생 조건은 상기 제2 전력기기에서 감지된 부분방전 신호가 상기 제2 전력기기에 인접한 전력기기에서 감지된 부분방전 신호보다 클 것을 더 포함할 수 있다.The interference occurrence condition may further include that the partial discharge signal detected by the second power device is greater than the partial discharge signal detected by the power device adjacent to the second power device.
상기 제어부는 상기 제1 전력기기부터 상기 기준 전력기기까지 연결된 각각의 전력기기 중 상기 제1 전력기기를 제외한 전력기기가 부분방전 간섭이 발생된 전력기기로 판단하고, 상기 부분방전 신호가 감지된 전력기기 중 상기 부분방전 간섭이 발생된 전력기기를 제외한 전력기기가 부분방전 발생 전력기기로 판단할 수 있다.The controller determines that a power device except for the first power device is a power device in which partial discharge interference is generated among power devices connected from the first power device to the reference power device, and the power in which the partial discharge signal is detected. Among the devices, the power device except for the power device in which the partial discharge interference is generated may be determined as the partial discharge generating power device.
본 발명의 실시예에 따른 부분방전 판단 방법은 부분방전 신호가 감지된 전력기기 각각의 부분방전 정보를 수집하는 단계; 수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 단계; 상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재한다면, 상기 조합을 이루는 전력기기를 선택하는 단계; 선택된 전력기기 중 가장 큰 부분방전 신호가 감지된 제1 전력기기를 찾는 단계; 상기 제1 전력기기에 기초하여 부분방전 판단의 기준이 되는 기준 전력기기를 선정하는 단계; 및 상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단하는 단계를 포함한다.Partial discharge determination method according to an embodiment of the present invention comprises the steps of collecting the partial discharge information of each power device is detected a partial discharge signal; Analyzing a partial discharge pattern of each power device based on the collected partial discharge information to determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists; If a combination of power devices having partial discharge pattern similarity equal to or greater than the predetermined value exists, selecting a power device making up the combination; Finding a first power device in which the largest partial discharge signal is detected among the selected power devices; Selecting a reference power device as a reference for partial discharge determination based on the first power device; And determining, based on the first power device or the reference power device, a power device having a partial discharge generating power device and an interference of the partial discharge.
상기 수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유상성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 단계는 상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하지 않는 다면, 상기 부분방전 신호가 감지된 전력기기 각각을 부분방전 발생 전력기기로 판단하는 단계를 더 포함할 수 있다.Analyzing the partial discharge pattern of each of the power devices based on the collected partial discharge information to determine whether there is a combination of power devices having a partial discharge pattern oil phase of a predetermined value or more is a portion of the predetermined value or more. If there is no combination of power devices having similarity in discharge pattern, the method may further include determining each of the power devices in which the partial discharge signal is detected as the partial discharge generating power device.
상기 제1 전력기기에 기초하여 기준 전력기기를 선정하는 단계는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하는 단계; 및 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 상기 기준 전력기기는 없다고 판단하는 단계를 더 포함할 수 있다.The step of selecting a reference power device based on the first power device may include determining whether a connection is made between the first power device and a power device adjacent to the first power device; And determining that there is no reference power device when the first power device and the power device adjacent to the first power device are not connected.
상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하는 단계는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하는 단계; 및 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 접지를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 기준 전력기기로 선정하는 단계를 더 포함할 수 있다.The determining of the connection between the first power device and a power device adjacent to the first power device may include: connecting the first power device and the power device adjacent to the first power device to the first power device; Determining a connection type of a power device adjacent to the first power device; And selecting a power device adjacent to the first power device as a reference power device when a connection form between the first power device and a power device adjacent to the first power device is connected while sharing a ground. have.
상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하는 단계는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 선로를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 제2 전력기기로 선택하는 단계; 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하는 단계; 및 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키지 않는 경우, 상기 제2 전력기기를 기준 전력기기로 선정하는 단계를 더 포함할 수 있다.When the first power device and the power device adjacent to the first power device are connected, determining the connection type between the first power device and the power device adjacent to the first power device may include the first power device and the Selecting a power device adjacent to the first power device as a second power device when a connection type of the power device adjacent to the first power device is connected while sharing a line; Determining whether the second power device and a power device adjacent to the second power device satisfy an interference occurrence condition; And when the second power device and a power device adjacent to the second power device do not satisfy the interference occurrence condition, selecting the second power device as a reference power device.
상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하는 단계는 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는 경우, 상기 제2 전력기기에 상기 제2 전력기기에 인접한 전력기기를 대입하여 다시 판단할 수 있다.The determining of whether the second power device and the power device adjacent to the second power device satisfies the interference occurrence condition may include the second power device and the power device adjacent to the second power device meeting the interference occurrence condition. In this case, it may be determined again by substituting the power device adjacent to the second power device into the second power device.
상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단하는 단계는 상기 제1 전력기기부터 상기 기준 전력기기까지 연결된 각각의 전력기기 중 상기 제1 전력기기를 제외한 전력기기가 부분방전 간섭이 발생된 전력기기로 판단하고, 상기 부분방전 신호가 감지된 전력기기 중 상기 부분방전 간섭이 발생된 전력기기를 제외한 전력기기가 부분방전 발생 전력기기로 판단할 수 있다.On the basis of the first power device or the reference power device, the step of determining the power device in which the partial discharge generating power device and the partial discharge have occurred may be performed by each of the power devices connected from the first power device to the reference power device. The power device except for the first power device is determined to be a power device in which the partial discharge interference is generated, and the power device except the power device in which the partial discharge interference is generated among the power devices in which the partial discharge signal is detected may generate partial discharge power. Judging by the device.
본 발명의 실시예에 따르는 연결기기간 연결여부와 연결형태에 기초하여 부분방전 및 부분방전 간섭이 발생된 전력기기를 판단할 수 있다.Based on the connection period and the connection type according to the embodiment of the present invention, it is possible to determine a power device in which partial discharge and partial discharge interference are generated.
도 1은 본 발명의 실시예에 따른 전력기기 그룹의 블록도이다.1 is a block diagram of a group of power devices according to an embodiment of the present invention.
도 2는 본 발명의 실시예에 따른 부분방전 판단 장치의 나타낸 블록도이다.2 is a block diagram showing a partial discharge determination apparatus according to an embodiment of the present invention.
도 3 및 도 4는 본 발명의 실시예에 따른 부분방전 판단 방법의 흐름도이다.3 and 4 are flowcharts of a partial discharge determination method according to an embodiment of the present invention.
아래에서는 첨부한 도면을 참고로 하여 본 발명의 실시 예에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시 예에 한정되지 않는다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.
명세서 및 청구범위 전체에서, 어떤 부분이 어떤 구성 요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성 요소를 더 포함할 수 있는 것을 의미한다. Throughout the specification and claims, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.
또한 명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 아니라 그 중간에 다른 소자를 사이에 두고 "전기적으로 연결"되어 있는 경우도 포함한다. 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다. In addition, throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" between other elements in between. . When a part is said to "include" a certain component, this means that it can further include other components, except to exclude other components unless specifically stated otherwise.
이제 본 발명의 실시 예에 따른 표시 장치 및 그 구동 방법에 대하여 도면을 참고로 하여 상세하게 설명한다. A display device and a driving method thereof according to an exemplary embodiment of the present invention will now be described in detail with reference to the accompanying drawings.
먼저, 도 1 내지 도 2을 참고하여 본 발명의 한 실시예에 따른 전력기기 동작 장치에 대하여 상세하게 설명한다.First, a power device operating apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 2.
도 1은 본 발명의 실시예에 따른 전력기기 그룹의 블록도이다.1 is a block diagram of a group of power devices according to an embodiment of the present invention.
도 1을 참조하면, 본 발명의 실시예에 따른 전력기기 그룹(100)은 복수의 전력기기(300a~300h)를 포함한다. 본 발명의 실시예에 따른 전력기기 그룹(100)은 부분방전 신호가 발생된 복수의 전력기기(300a~300h)를 포함한다. Referring to FIG. 1, the power device group 100 according to an embodiment of the present invention includes a plurality of power devices 300a to 300h. The power device group 100 according to the embodiment of the present invention includes a plurality of power devices 300a to 300h from which a partial discharge signal is generated.
도 1을 참조하면 전력기기는 선로를 공유하며 연결되거나, 접지선을 공유하면서 연결(A1, A2)될 수 있다. 본 발명의 실시예에 따른 선로는 고전압 선로일 수 도 있다.Referring to FIG. 1, the power device may be connected while sharing a line, or may be connected (A1 and A2) while sharing a ground line. The line according to the embodiment of the present invention may be a high voltage line.
본 발명의 실시예에 따르면, 전력기기(A1, A2)가 접지를 공통으로 하여 연결되어 있는 경우, 부분방전 신호가 접지를 타고 이동될 수 있다. 본 발명의 실시예에 따르면, 부분방전 신호가 전달될 수 있는 전력기기간의 거리는 4미터 이내일 수 있다. 또한 접지를 통해 전달된 부분방전 신호는 전달받은 전력기기의 선로 또는 도체를 통해 다른 전력기기로 이동할 수 없다. According to an embodiment of the present invention, when the power devices A1 and A2 are connected with the ground in common, the partial discharge signal may be moved on the ground. According to an embodiment of the present invention, the distance between power devices to which the partial discharge signal may be transmitted may be within 4 meters. In addition, the partial discharge signal transmitted through the ground cannot move to another power device through the line or conductor of the received power device.
전력기기간은 선로를 통해 연결될 수도 있다. 전력기기가 선로를 통해 연결되어 있는 것은 전력기기간 전기적 폐루프를 형성하고 있는 것을 의미할 수도 있다. 부분방전 신호는 전력기기의 선로를 통해 먼 거리까지 전달될 수도 있다. 본 발명의 실시예에 따르면, 전력기기를 연결시키는 선로가 XLPE 전선일 경우 부분방전 신호가 전달 될 수 있는 전력기기간의 이격 거리는 50미터 이내일 수 있다. 본 발명의 또 다른 실시예에 따르면, 전력기기를 연결시키는 선로가 버스바(Busbar) Type인 경우 부분방전 신호가 전달 될 수 있는 전력기기간의 이격 거리는 제한이 없을 수 있다.The electric power period may be connected by a line. The connection of a power device via a line may mean that an electric closed loop is formed. The partial discharge signal may be transmitted over a long distance through the line of the power device. According to an embodiment of the present invention, when the line connecting the power device is an XLPE wire, the separation distance between the power devices to which the partial discharge signal may be transmitted may be within 50 meters. According to another embodiment of the present invention, when the line connecting the power devices is a busbar type (Busbar) type, the separation distance between the power devices that can be transmitted to the partial discharge signal can be unlimited.
또한 본 발명의 실시예에 따르면 전력기기(300a~300h)는 전동기 또는 고압차단기(MCSG) 등과 같이 전력 시스템을 구성하는 장치 중 하나일 수 있다. In addition, according to the embodiment of the present invention, the power devices 300a to 300h may be one of the devices configuring the power system, such as an electric motor or a high voltage circuit breaker (MCSG).
도 2는 본 발명의 실시예에 따른 부분방전 판단 장치의 나타낸 블록도이다.2 is a block diagram showing a partial discharge determination apparatus according to an embodiment of the present invention.
본 발명의 실시예에 따른 부분방전 판단 장치(200)는 전력기기 그룹(100)내에서 발생된 부분방전을 판단하거나, 부분방전의 간섭을 판단한다. 보다 상세하게는 부분방전 판단 장치(200)는 전력기기 그룹(100)의 전력기기(300a~300h)에서 발생된 부분방전 신호를 감지한다. 또한 전력기기 그룹(100)의 전력기기(300a~300h)의 부분방전 정보에 기초하여 부분방전을 판단하거나, 부분방전의 간섭을 판단한다.The partial discharge determining apparatus 200 according to the embodiment of the present invention determines the partial discharge generated in the power device group 100 or determines the interference of the partial discharge. In more detail, the partial discharge determining apparatus 200 detects a partial discharge signal generated by the power devices 300a to 300h of the power device group 100. In addition, the partial discharge is determined based on the partial discharge information of the power devices 300a to 300h of the power device group 100, or the interference of the partial discharge is determined.
도 2를 참조하여 본 발명의 실시예에 따른 부분방전 판단 장치에 대하여 설명한다. 본 발명의 실시예에 따른 부분방전 판단 장치(200)는 제어부(210), 정보 수집부(220), 저장부(230) 및 표시부(240)을 포함한다. 그러나 도 2에 도시된 구성요소들이 필수적인 것은 아니어서, 그보다 많은 구성요소들을 갖거나 그보다 적은 구성요소들을 갖는 부분방전 판단 장치(200)가 구현될 수도 있다.A partial discharge determination apparatus according to an embodiment of the present invention will be described with reference to FIG. 2. The partial discharge determination apparatus 200 according to the embodiment of the present invention includes a control unit 210, an information collection unit 220, a storage unit 230, and a display unit 240. However, since the components illustrated in FIG. 2 are not essential, the partial discharge determining apparatus 200 having more components or fewer components may be implemented.
이하, 본 발명의 실시예에 따른 부분방전 판단 장치(200)의 구성요소들에 대해 차례로 살펴본다.Hereinafter, the components of the partial discharge determining apparatus 200 according to an embodiment of the present invention will be described in sequence.
제어부(210)는 부분방전 판단 장치(200)의 전반적인 동작을 제어한다. 본 발명의 실시예에 따른 제어부(210)는 부분방전 정보에 기초하여 부분방전이 발생한 전력장치 또는 부분방전의 간섭이 발생한 전력장치를 판단할 수 있다. 본 발명의 실시예에 따른 제어부(210)는 전력기기 중 가장 큰 부분방전 신호가 감지된 전력기기 및 부분방전 판단의 기준이 되는 기준 전력기기 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단할 수 있다.The controller 210 controls the overall operation of the partial discharge determination apparatus 200. The controller 210 according to an exemplary embodiment of the present invention may determine a power device in which partial discharge occurs or a power device in which interference of partial discharge occurs based on the partial discharge information. The control unit 210 according to an embodiment of the present invention is based on the power device in which the largest partial discharge signal is detected among the power devices and the reference power device that is the reference for the partial discharge determination, and the interference between the partial discharge generating power device and the partial discharge is reduced. The power device that occurred can be determined.
정보 수집부(220)은 부분방전 신호가 감지된 전력기기의 부분방전 정보를 수집한다. 본 발명의 실시예에 따르면 부분방전 정보는 부분방전 신호의 크기, 패턴, 위상, 개수을 포함할 수도 있다. The information collecting unit 220 collects partial discharge information of the power device in which the partial discharge signal is detected. According to an embodiment of the present invention, the partial discharge information may include the size, pattern, phase, number of partial discharge signals.
저장부(230)는 부분방전 신호가 감지된 전력기기의 부분방전 정보를 저장한다. 또한 저장부(230)는 제어부(210)에서 판단된 결과를 저장할 수도 있다. 보다 상세하게는 저장부(230)는 부분방전이 발생한 전력장치 또는 부분방전의 간섭이 발생한 전력장치의 판단결과를 저장할 수도 있다. 또한 저장부(230)에는 절연열화로 인해 발생하는 부분방전 신호의 패턴 특성(이하에서는 부분방전 패턴 이라 함)을 저장할 수도 있다.The storage unit 230 stores partial discharge information of the power device in which the partial discharge signal is detected. In addition, the storage unit 230 may store the result determined by the control unit 210. In more detail, the storage unit 230 may store the determination result of the power device in which the partial discharge occurred or the power device in which the partial discharge occurred. In addition, the storage unit 230 may store pattern characteristics (hereinafter, referred to as a partial discharge pattern) of the partial discharge signal generated due to insulation degradation.
표시부(240)는 액정 디스플레이(liquid crystal display, LCD), 박막 트랜지스터 액정 디스플레이(thin film transistor-liquid crystal display, TFT LCD), 유기 발광 다이오드(organic light-emitting diode, OLED), 플렉시블 디스플레이(flexible display), 3차원 디스플레이(3D display) 중에서 적어도 하나를 포함할 수 있다. 본 발명의 실시예에 따른 표시부(240)는 제어부(210)에서 판단한 결과를 출력할 수 있다. The display unit 240 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display ), And may include at least one of a 3D display. The display unit 240 according to an exemplary embodiment of the present invention may output the result determined by the controller 210.
다음은 도 1 내지 도 4를 참조하여 본 발명의 실시예에 따른 부분방전 판단 방법에 대하여 설명하겠다.Next, a partial discharge determination method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
도 3 및 도 4는 본 발명의 실시예에 따른 부분방전 판단 방법의 흐름도이다.3 and 4 are flowcharts of a partial discharge determination method according to an embodiment of the present invention.
도 3의 A와 도 4의 A는 연결되고, 도 3의 B와 도 4의 B는 연결된다.A of FIG. 3 and A of FIG. 4 are connected, and B of FIG. 3 and B of FIG. 4 are connected.
먼저 도 3을 참조하여 설명한다.First, a description will be given with reference to FIG. 3.
전력기기 그룹(100) 내의 부분방전 신호가 감지되면(S101), 정보 수집부(220)는 부분방전 신호가 감지된 전력기기의 부분방전 정보를 수집한다(S103). 이하에서는 전력기기(300a~300h)에서 부분방전 신호가 감지된 것을 예를 들어 설명하겠다. 그러나 본 발명은 이에 한정되지 않는다.When the partial discharge signal in the power device group 100 is detected (S101), the information collecting unit 220 collects partial discharge information of the power device in which the partial discharge signal is detected (S103). Hereinafter, an example in which the partial discharge signal is detected by the power devices 300a to 300h will be described. However, the present invention is not limited thereto.
제어부(210)는 부분방전 정보에 기초하여 부분방전 신호가 감지된 전력기기(300a~300h)에 대한 부분방전 패턴을 분석한다.The controller 210 analyzes the partial discharge pattern for the power devices 300a to 300h in which the partial discharge signal is detected based on the partial discharge information.
제어부(210)는 부분방전 패턴 분석에 기초하여 상기 분분방전 신호를 발생시키는 절연열화 유형을 판단할 수도 있다. The controller 210 may determine the type of insulation degradation that generates the divided discharge signal based on the partial discharge pattern analysis.
제어부(210)는 부분방전 신호가 음전위를 양전위보다 많이 포함하는 경우 전력기기의 도체 돌출부(Conductive Protrusion)에서 발생되는 도체 돌출부 방전이라 판단한다. 제어부(210)는 부분방전 신호가 양전위를 음전위보다 많이 포함하는 경우 전력기기의 인클로저 돌출부(Enclosure Protrusion)에서 발생되는 인클로저 돌출부 방전이라 판단한다. 제어부(210)는 양전위와 음전위를 균등하게 포함하는 경우 보이드(Void)에서 발생되는 보이드 방전이라고 판단한다. 제어부(210)가 부분방전 패턴에 기초하여 절연열화 유형을 판단할 수 있는 것은 AC전원의 영향으로 전력기기의 부분방전 신호의 발생 위치에 따라 부분방전 신호의 개시 전압도 달라지기 때문이다. The controller 210 determines that the discharge of the protrusion of the conductor is generated in the conductive protrusion of the power device when the partial discharge signal includes the negative potential more than the positive potential. The controller 210 determines that the discharge of the protrusion of the enclosure is generated in an enclosure protrusion of the power device when the partial discharge signal includes more of the positive potential than the negative potential. The controller 210 determines that the discharge is a void discharge generated in the void when the positive potential and the negative potential are equally included. The control unit 210 may determine the type of insulation degradation based on the partial discharge pattern because the start voltage of the partial discharge signal also varies according to the generation position of the partial discharge signal of the power device under the influence of the AC power source.
제어부(210)는 소정의 수치 이상의 부분방전 패턴 유상성을 갖는 전력기기 조합이 존재하는 지를 판단한다(S107). 본 발명의 실시예에 따른 소정의 수치는 85%일 수 있다. 즉 제어부(230)는 부분방전 신호의 형태가 유사한 전력기기의 조합이 존재하는 지를 판단한다. The controller 210 determines whether there is a combination of power devices having partial discharge pattern oiliness of a predetermined value or more (S107). The predetermined value according to the embodiment of the present invention may be 85%. That is, the controller 230 determines whether a combination of power devices having similar shapes of the partial discharge signals exists.
만일 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기 조합이 존재하지 않는 다면, 제어부(230)는 부분방전 신호가 감지된 전력기기가 부분방전이 발생된 전력기기라고 판단한다(S109). If there is no power device combination having a partial discharge pattern similarity equal to or greater than a predetermined value, the controller 230 determines that the power device in which the partial discharge signal is detected is the power device in which the partial discharge is generated (S109).
만일 소정의 수치 이상의 부분방전 패턴 유상성을 갖는 전력기기 조합이 존재하는 경우, 제어부(210)는 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합을 선택한다(S111). 이하에서는 부분방전 신호의 형태가 유사한 전력기기의 조합을 전력기기(300a~300h)를 예를 들어 설명하겠다. 그러나 본 발명은 이에 한정되지 않는다.If there is a combination of power devices having partial discharge pattern oiliness of a predetermined value or more, the controller 210 selects a combination of power devices having partial discharge pattern similarity of a predetermined value or more (S111). Hereinafter, a combination of power devices having similar forms of the partial discharge signal will be described using the power devices 300a to 300h as an example. However, the present invention is not limited thereto.
제어부(210)는 선택된 조합의 전력기기(300a~300h)에 각각의 전력기기(300a~300h)에서 발생된 즉 부분방전 판단 장치(200)가 감지한 각각의 부분방전 신호의 크기에 기초하여 순위를 부여한다(S113). 이 과정에서 제어부(210)는 감지된 부분방전 신호의 크기가 가장 큰 전력기기를 선정한다. The controller 210 ranks the selected power devices 300a to 300h based on the magnitude of each partial discharge signal generated by each power device 300a to 300h, that is, detected by the partial discharge determination device 200. To give (S113). In this process, the controller 210 selects a power device having the largest magnitude of the detected partial discharge signal.
본 발명의 실시예에 따르면 부분방전 신호의 크기에 기초하여 순위를 부여하는 것은 부분방전 신호의 크기가 큰 순에서 작은 순일 수 있다. 이하에서는 감지된 부분방전 신호의 크기가 전력기기(300a), 전력기기(300b), 전력기기(300c), 전력기기(300d), 전력기기(300e), 전력기기(300f), 전력기기(300g), 전력기기(300h)순으로 작아지는 것을 예를 들어 설명하겠다. 그러나 본 발명은 이에 한정되지 않는다. 또한 이하에서는 감지된 부분방전 신호의 크기가 가장 큰 전력기기(300a)를 제1 전력기기(300a)로 하여 설명하겠다. According to an embodiment of the present invention, the ranking based on the magnitude of the partial discharge signal may be in descending order of the magnitude of the partial discharge signal. Hereinafter, the magnitude of the detected partial discharge signal is the power device 300a, the power device 300b, the power device 300c, the power device 300d, the power device 300e, the power device 300f, and the power device 300g. ), And the power device 300h is reduced in order. However, the present invention is not limited thereto. In addition, hereinafter, the power device 300a having the largest magnitude of the detected partial discharge signal will be described as the first power device 300a.
이제부터는 도 4를 참조하여 설명한다.This will now be described with reference to FIG. 4.
이후 제어부(210)는 제1 전력기기(300a)와 제1 전력기기와 인접한 전력기기(300b, 300c, 300e)가 연결되어 있는지를 판단한다(S114). 본 발명의 실시예에 따르면 전력기기간 인접하다라고 하는 것은 두 전력기기 사이에 다른 전력기기가 존재하지 않는 것을 말할 수 있다. 제1 전력기기(300a)와 인접한 전력기기(300b, 300c, 300e)가 연결되어 있는지 않는 경우, 제어부(210)는 부분 방전 감지신호가 감지된 모든 전력기기(300a~300h)를 부분방전 발생 전력기기로 판단한다.Thereafter, the controller 210 determines whether the first power device 300a and the first power device and the adjacent power devices 300b, 300c, and 300e are connected (S114). According to an embodiment of the present invention, the term “adjacent period” may mean that no other power device exists between two power devices. When the first power device 300a and the adjacent power devices 300b, 300c, and 300e are not connected to each other, the controller 210 controls all the power devices 300a to 300h for which the partial discharge detection signal is detected. Judging by the device.
제1 전력기기(300a)와 인접한 전력기기(300b, 300c, 300e)가 연결되어 있는 경우, 제어부(210)는 제1 전력기기(300a)와 인접한 전력기기(300b, 300c, 300e)간의 연결 형태를 판단한다(S115). 이 때 제어부(210)는 제1 전력기기(300a)와 접지를 공유하며 연결된 전력기기(300b, 300c)를 부분방전 간섭 발생 전력기기로 판단한다. 즉 제어부(210)는 전력기기(300b, 300c)를 부분방전 간섭의 기준이 되는 전력기기 즉 기준 전력기기로 선정한다.  When the first power device 300a and the adjacent power devices 300b, 300c, and 300e are connected, the controller 210 forms a connection between the first power device 300a and the adjacent power devices 300b, 300c, and 300e. Determine (S115). At this time, the control unit 210 determines the connected power devices (300b, 300c) as the partial discharge interference power device sharing the ground with the first power device (300a). That is, the controller 210 selects the power devices 300b and 300c as the power devices, that is, the reference power devices, as the reference for the partial discharge interference.
그러나 본 발명의 실시예에 따르면 제1 전력기기(300a)에서 발생된 부분방전 신호의 크기가 접지를 공유하며 연결된 전력기기(300b, 300c)에서 발생된 부분방전 신호의 크기가 작은 경우, 제어부(210)는 전력기기(300b, 300c)를 부분방전 간섭 발생 전력기기로 판단하지 않고, 부분방전 발생 전력기기로 판단할 수도 있다. 이 경우 제어부(210)는 기준 전력기기가 없다고 판단한다. 본 발명의 실시예에 따르면 제어부(210)는 제1 전력기기(300a)부터 기준 전력기기까지 연결된 각각의 전력기기 중 제1 전력기기(300a)를 제외한 전력기기가 부분방전 간섭이 발생된 전력기기로 판단However, according to the exemplary embodiment of the present invention, when the magnitude of the partial discharge signal generated by the first power device 300a shares the ground and the magnitude of the partial discharge signal generated by the connected power devices 300b and 300c is small, the controller ( 210 may not determine the power devices 300b and 300c as the partial discharge interference generating power device, but may determine the power devices 300b and 300c as the partial discharge generating power device. In this case, the controller 210 determines that there is no reference power device. According to an embodiment of the present invention, the control unit 210 is a power device in which the power device except the first power device 300a among the power devices connected from the first power device 300a to the reference power device has generated partial discharge interference. Judged by
또한 제어부(210)는 전력기기(300b, 300c) 중 어느 한 전력기기(300c)와 선로를 공유하며 연결된 전력기기(d)는 부분방전 간섭이 발생된 전력기기라고 판단하지 않고, 부분방전이 발생된 전력기기라고 판단한다. 그것은 접지를 통해 전달된 부분방전 신호는 전달받은 전력기기의 선로 또는 도체를 통해 다른 전력기기로 이동할 수 없기 때문이다. In addition, the control unit 210 shares the line with any one of the power device (300b, 300c) and the connected power device (d) does not determine that the partial discharge interference generated power device, partial discharge occurs It is determined that the power device. This is because the partial discharge signal transmitted through the ground cannot move to another power device through the line or conductor of the received power device.
제어부(210)는 제1 전력기기(300a)와 선로를 공유하며 연결된 전력기기(300e)를 제2 전력기기(300e)로하여 제2 전력기기(300e)와 인접한 전력기기(300g)와 간섭 현상 발생 조건을 충족하는 여부를 판단한다(S116). 이 때 본 발명의 실시예에 따르면 제어부(210)는 제1 전력기기(300a)와 선로를 공유하며 연결된 전력기기(300e)를 부분방전 간섭 발생 전력기기로 판단한다. The controller 210 shares the line with the first power device 300a and interferes with the power device 300g adjacent to the second power device 300e by using the connected power device 300e as the second power device 300e. It is determined whether the occurrence condition is satisfied (S116). At this time, according to an embodiment of the present invention, the controller 210 shares the line with the first power device 300a and determines the connected power device 300e as the partial discharge interference generating power device.
그러나 본 발명의 실시예에 따르면 제1 전력기기(300a)에서 발생된 부분방전 신호의 크기가 선로를 공유하며 연결된 전력기기(300e)에서 발생된 부분방전 신호의 크기가 작은 경우, 제어부(210)는 전력기기(300e)를 부분방전 간섭 발생 전력기기로 판단하지 않고, 부분방전 발생 전력기기로 판단할 수도 있다. 이 경우 제어부(210)는 전력기기(300e)와 선로를 공유하며 연결된 전력기기(300g)는 부분방전 간섭이 발생된 전력기기라고 판단하지 않고, 부분방전이 발생된 전력기기라고 판단한다. 이 경우 제어부(210)는 전력기기(300e)를 기준 전력기기로 선정한다. However, according to the embodiment of the present invention, when the magnitude of the partial discharge signal generated by the first power device 300a shares a line and the magnitude of the partial discharge signal generated by the connected power device 300e is small, the controller 210 The power device 300e may not be determined as the partial discharge interference generating power device, but may be determined as the partial discharge generating power device. In this case, the controller 210 shares the line with the power device 300e and determines that the connected power device 300g does not determine that the partial discharge interference has occurred, but is a power device that has generated partial discharge. In this case, the controller 210 selects the power device 300e as a reference power device.
이하에서는 1 전력기기(300a)에서 발생된 부분방전 신호의 크기가 선로를 공유하며 연결된 전력기기(300e)에서 발생된 부분방전 신호의 크기가 작지 않은 경우를 예를 들어 설명하겠다.Hereinafter, an example will be described in which the magnitude of the partial discharge signal generated by the first power device 300a shares a line and the magnitude of the partial discharge signal generated by the connected power device 300e is not small.
제2 전력기기(300e)로하여 제2 전력기기(300e)와 인접한 전력기기(300g)와 간섭 현상 발생 조건을 충족하는 경우, 제어부(210)는 제2 전력기기(300e)에 제2 전력기기(300e)와 인접한 전력기기(300g)를 대입하고, 새로 대입된 제2 전력기기(300g)와 새로 대입된 제2 전력기기(300g)에 인접한 전력기기(300f, 300h)가 간섭 현상 발생 조건을 충족하는 지 판단한다(S117). 제어부(210)는 과정(S116, S117)을 반복하여 간섭 현상 발생 조건을 충족하지 못하는 전력기기를 판단한다. 이 경우 제어부(210)는 간섭 현상 발생 조건을 충족하지 못하는 전력기기를 기준 전력기기로 선정한다.When the second power device 300e satisfies the interference occurrence condition with the power device 300g adjacent to the second power device 300e, the controller 210 controls the second power device 300e with the second power device. The power device 300g adjacent to 300e is substituted, and the newly inserted second power device 300g and the power device 300f and 300h adjacent to the newly inserted second power device 300g are used to detect the interference occurrence condition. Determine whether it is satisfied (S117). The controller 210 repeats steps S116 and S117 to determine a power device that does not satisfy the interference occurrence condition. In this case, the controller 210 selects a power device that does not satisfy the interference occurrence condition as a reference power device.
본 발명의 실시예에 따른 간섭 현상 발생 조건은 제2 전력기기가 감지된 부분방전 신호가 제2 전력기기와 선로를 공유하며 연결될 것 또는 제2 전력기기에서 감지된 부분방전 신호가 제2 전력기기에 인접한 전력기기에서 감지된 부분방전 신호보다 클 것을 포함한다. 또한 제2 전력기기가 제2 전력기기에 인접한 전력기기와 선로를 공유하며 연결되는 경우라 할지라도 선로가 XLPE 전선일 경우 전력기기간의 이격 거리가 50미터이내일 것일 수 있다. In the interference occurrence condition according to the embodiment of the present invention, the partial discharge signal detected by the second power device is connected to share the line with the second power device, or the partial discharge signal detected by the second power device is the second power device. It includes greater than the partial discharge signal detected by the power device adjacent to. In addition, even when the second power device is connected to the power device adjacent to the second power device sharing the line, when the line is XLPE wire, the separation distance between the power devices may be within 50 meters.
본 명세서에서 기준 전력기기는 전력기기(300f)일 수 있다. 또한 전력기기(300f)와 전력기기(300g)가 공유하는 선로가 XLPE 전선일 경우 전력기기간의 이격 거리가 50미터를 초과하는 경우, 제어부(210)는 전력기기(300g)를 기준 전력기기로 선정할 수 있다.In the present specification, the reference power device may be a power device 300f. In addition, when the line shared by the power device 300f and the power device 300g is an XLPE wire, when the separation distance between the power devices exceeds 50 meters, the controller 210 selects the power device 300g as the reference power device. can do.
이후 제어부(210)는 기준 전력기기 및 제1 전력기기(300a)에 기초하여 부분방전 발생 또는 부분방전 간섭 전력기기를 판단한다(S119). 본 발명의 실시예에 따르면 제어부(210)는 제1 전력기기(300a)부터 기준 전력기기까지 연결된 각각의 전력기기 중 제1 전력기기(300a)를 제외한 전력기기를 부분방전 간섭이 발생된 전력기기로 판단하고, 부분방전 신호가 감지된 전력기기(300a ~300h) 중 부분방전 간섭이 발생된 전력기기를 제외한 전력기기가 부분방전 발생 전력기기로 판단한다.Thereafter, the controller 210 determines a partial discharge occurrence or a partial discharge interference power device based on the reference power device and the first power device 300a (S119). According to an embodiment of the present invention, the controller 210 is a power device in which partial discharge interference occurs in the power device except the first power device 300a among the respective power devices connected from the first power device 300a to the reference power device. The power device except for the power device having the partial discharge interference among the power devices 300a to 300h in which the partial discharge signal is detected is determined as the partial discharge generating power device.
예를 들어 기준 전력기기(300b, 300c, 300f)인 경우, 제어부(210)는 제1 전력기기(300a)부터 기준 전력기기(300b, 300c, 300f)까지 연결된 각각의 전력기기(300a, 300b, 300c, 300e, 300g, 300f) 중 제1 전력기기(300a)를 제외한 전력기기(300b, 300c, 300e, 300g, 300f)를 부분방전 간섭이 발생된 전력기기로 판단하고, 부분방전 신호가 감지된 전력기기(300a~300h) 중 부분방전 간섭이 발생된 전력기기(300b, 300c, 300e, 300g, 300f)를 제외한 전력기기(300d, 300a, 300h)를 부분방전 발생 전력기기로 판단한다.For example, in the case of the reference power devices 300b, 300c, and 300f, the controller 210 may connect the respective power devices 300a, 300b, 300b, 300b, 300c, and 300f to the reference power devices 300b, 300c, and 300f. Among the 300c, 300e, 300g, and 300f, the power devices 300b, 300c, 300e, 300g, and 300f except for the first power device 300a are determined to be power devices in which partial discharge interference is generated, and a partial discharge signal is detected. Among the power devices 300a to 300h, the power devices 300d, 300a and 300h except for the power devices 300b, 300c, 300e, 300g, and 300f in which the partial discharge interference is generated are determined as the partial discharge generating power devices.
제어부(230) 부분방전 발생 또는 간섭에 대한 정보를 저장부(210)에 저장한다(S121). 표시부(240)는 저장부(210)에 저장된 정보에 기초하여 각종 정보를 출력할 수 있다.The controller 230 stores information on the occurrence or interference of the partial discharge in the storage 210 (S121). The display unit 240 may output various types of information based on the information stored in the storage unit 210.
이상에서 본 발명의 바람직한 실시예에 대하여 상세하게 설명하였지만 본 발명의 권리범위는 이에 한정되는 것은 아니고 다음의 청구범위에서 정의하고 있는 본 발명의 기본 개념을 이용한 당업자의 여러 변형 및 개량 형태 또한 본 발명의 권리범위에 속하는 것이다.Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (20)

  1. 부분방전 신호가 감지된 전력기기 각각의 부분방전 정보를 수집하는 정보 수집부; 및An information collecting unit collecting partial discharge information of each power device in which the partial discharge signal is detected; And
    수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 제어부를 포함하고,And a controller for analyzing a partial discharge pattern of each power device based on the collected partial discharge information to determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists.
    상기 제어부는 상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재한다면, 상기 조합을 이루는 전력기기를 선택하고, 선택된 전력기기 중 가장 큰 부분방전 신호가 감지된 제1 전력기기를 찾고, 상기 제1 전력기기에 기초하여 부분방전 판단의 기준이 되는 기준 전력기기를 선정하고, 상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단하는 부분방전 판단 장치.If there is a combination of power devices having a partial discharge pattern similarity equal to or greater than the predetermined value, the controller selects a power device constituting the combination and finds a first power device in which the largest partial discharge signal is detected among the selected power devices. And selecting a reference power device as a reference for the partial discharge determination based on the first power device, and based on the first power device or the reference power device, the power where the partial discharge generating power device interferes with the partial discharge. Partial discharge determination device for judging the device.
  2. 제1항에 있어서,The method of claim 1,
    상기 제어부는 The control unit
    상기 부분방전 패턴 분석에 기초하여 상기 부분방전 신호를 발생시키는 절연열화 유형을 판단하는 부분방전 판단 장치.Partial discharge determination device for determining the type of insulation degradation that generates the partial discharge signal based on the partial discharge pattern analysis.
  3. 제2항에 있어서,The method of claim 2,
    상기 제어부는The control unit
    상기 부분방전 패턴이, 음전위를 양전위보다 많이 포함하는 경우 도체 돌출부 방전이라 판단하고, 상기 양전위를 상기 음전위보다 많이 포함하는 경우 인클로저 돌출부 방전이라 판단하고, 상기 양전위와 상기 음전위를 균등하게 포함하는 경우 보이드 방전이라고 판단하는 부분방전 판단 장치.When the partial discharge pattern includes a negative potential more than the positive potential, it is determined that the discharge of the conductor protrusions. When the partial discharge pattern includes the positive potential more than the negative potential, the partial discharge pattern is determined to be an enclosure protrusion discharge. Partial discharge determination device to determine if the void discharge.
  4. 제1항에 있어서,The method of claim 1,
    상기 제어부는 The control unit
    상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하지 않는 다면, 상기 부분방전 신호가 감지된 전력기기 각각을 부분방전 발생 전력기기로 판단하는 부분방전 판단 장치.And if there is no combination of power devices having the partial discharge pattern similarity equal to or greater than the predetermined value, the partial discharge determination device that determines each of the power devices on which the partial discharge signal is detected as a partial discharge generating power device.
  5. 제1항에 있어서,The method of claim 1,
    상기 제어부는 The control unit
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 상기 기준 전력기기는 없다고 판단하는 부분방전 판단 장치.It is determined whether the first power device and the power device adjacent to the first power device are connected, and if the first power device and the power device adjacent to the first power device are not connected, the reference power device is determined to be absent. Partial discharge judgment device.
  6. 제1항에 있어서,The method of claim 1,
    상기 제어부는The control unit
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 또는 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있어도 상기 제1 전력기기에서 발생된 부분방전 신호의 크기가 상기 제1 전력기기에 인접한 전력기기에서 발생된 부분방전 신호의 크기보다 크지 않은 경우, 상기 기준 전력기기는 없다고 판단하는 부분방전 판단 장치.It is determined whether the first power device and the power device adjacent to the first power device are connected, and when the first power device and the power device adjacent to the first power device are not connected or with the first power device. If the magnitude of the partial discharge signal generated by the first power device is not greater than the magnitude of the partial discharge signal generated by the power device adjacent to the first power device even when a power device adjacent to the first power device is connected, Partial discharge determination device for determining that there is no reference power equipment.
  7. 제5항에 있어서,The method of claim 5,
    상기 제어부는The control unit
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하고, 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 접지를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 기준 전력기기로 선정하는 부분방전 판단 장치.When the first power device and the power device adjacent to the first power device are connected, a connection type of the first power device and the power device adjacent to the first power device is determined, and the first power device and the first power device are determined. 1. The partial discharge determining apparatus for selecting a power device adjacent to the first power device as a reference power device when a connection type of a power device adjacent to the power device shares the ground and is connected.
  8. 제7항에 있어서,The method of claim 7, wherein
    상기 제어부는The control unit
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 선로를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 제2 전력기기로 선택하고, 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하고, 상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키지 않는 경우, 상기 제2 전력기기를 기준 전력기기로 선정하는 부분방전 판단 장치.When the connection type of the first power device and the power device adjacent to the first power device is connected by sharing a line, the power device adjacent to the first power device is selected as the second power device, and the second power device is selected. And if the power device adjacent to the second power device satisfies the interference occurrence condition, and the second power device and the power device adjacent to the second power device do not meet the interference occurrence condition, 2 Partial discharge judgment device for selecting a power device as a reference power device.
  9. 제8항에 있어서,The method of claim 8,
    상기 제어부는The control unit
    상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는 경우, 상기 제2 전력기기에 상기 제2 전력기기에 인접한 전력기기를 대입하여 다시 판단하는 부분방전 판단 장치. When the second power device and the power device adjacent to the second power device satisfies the interference occurrence condition, the partial discharge determination device to determine again by substituting the power device adjacent to the second power device in the second power device .
  10. 제9항에 있어서,The method of claim 9,
    상기 간섭 현상 발생 조건은 The interference occurrence condition is
    상기 제2 전력기기가 감지된 부분방전 신호가 상기 제2 전력기기와 선로를 공유하며 연결될 것을 포함하는 부분방전 판단 방법.Partial discharge determination method comprising the partial discharge signal sensed by the second power device is connected to share the line with the second power device.
  11. 제10항에 있어서,The method of claim 10,
    상기 간섭 현상 발생 조건은 The interference occurrence condition is
    상기 제2 전력기기에서 감지된 부분방전 신호가 상기 제2 전력기기에 인접한 전력기기에서 감지된 부분방전 신호보다 클 것을 더 포함하는 부분방전 판단 방법.And a partial discharge signal detected by the second power device is greater than a partial discharge signal detected by a power device adjacent to the second power device.
  12. 제8항에 있어서,The method of claim 8,
    상기 제어부는The control unit
    상기 제1 전력기기부터 상기 기준 전력기기까지 연결된 각각의 전력기기 중 상기 제1 전력기기를 제외한 전력기기가 부분방전 간섭이 발생된 전력기기로 판단하고, 상기 부분방전 신호가 감지된 전력기기 중 상기 부분방전 간섭이 발생된 전력기기를 제외한 전력기기가 부분방전 발생 전력기기로 판단하는 부분방전 판단 장치.Of the power devices connected from the first power device to the reference power device, the power device except for the first power device is determined to be a power device in which partial discharge interference occurs, and the power device in which the partial discharge signal is detected. Partial discharge determination device that the power device, except for the power device that generates the partial discharge interference is determined to be a partial discharge generating power device.
  13. 부분방전 신호가 감지된 전력기기 각각의 부분방전 정보를 수집하는 단계;Collecting partial discharge information of each power device in which the partial discharge signal is detected;
    수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 단계;Analyzing a partial discharge pattern of each power device based on the collected partial discharge information to determine whether a combination of power devices having a partial discharge pattern similarity equal to or greater than a predetermined value exists;
    상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재한다면, 상기 조합을 이루는 전력기기를 선택하는 단계;If a combination of power devices having partial discharge pattern similarity equal to or greater than the predetermined value exists, selecting a power device making up the combination;
    선택된 전력기기 중 가장 큰 부분방전 신호가 감지된 제1 전력기기를 찾는 단계; Finding a first power device in which the largest partial discharge signal is detected among the selected power devices;
    상기 제1 전력기기에 기초하여 부분방전 판단의 기준이 되는 기준 전력기기를 선정하는 단계; 및Selecting a reference power device as a reference for partial discharge determination based on the first power device; And
    상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단하는 단계를 포함하는 부분방전 판단 방법.And determining, based on the first power device or the reference power device, a power device in which interference of the partial discharge-generating power device and the partial discharge has occurred.
  14. 제13항에 있어서,The method of claim 13,
    상기 수집된 부분방전 정보에 기초하여 상기 각각의 전력기기의 부분방전 패턴을 분석하여 소정의 수치 이상의 부분방전 패턴 유상성을 갖는 전력기기의 조합이 존재하는 지를 판단하는 단계는Analyzing the partial discharge pattern of each of the power devices based on the collected partial discharge information to determine whether there is a combination of power devices having a partial discharge pattern or higher than a predetermined value
    상기 소정의 수치 이상의 부분방전 패턴 유사성을 갖는 전력기기의 조합이 존재하지 않는 다면, 상기 부분방전 신호가 감지된 전력기기 각각을 부분방전 발생 전력기기로 판단하는 단계를 더 포함하는 부분방전 판단 방법.If there is no combination of power devices having a partial discharge pattern similarity equal to or greater than the predetermined value, determining each of the power devices in which the partial discharge signal is detected is a partial discharge generating power device.
  15. 제14항에 있어서,The method of claim 14,
    상기 제1 전력기기에 기초하여 기준 전력기기를 선정하는 단계는Selecting a reference power device based on the first power device
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하는 단계; 및Determining whether a connection is made between the first power device and a power device adjacent to the first power device; And
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있지 않은 경우 상기 기준 전력기기는 없다고 판단하는 단계를 더 포함하는 부분방전 판단 방법.And determining that there is no reference power device when the first power device and the power device adjacent to the first power device are not connected.
  16. 제15항에 있어서,The method of claim 15,
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기간의 연결여부를 판단하는 단계는Determining whether the first power device and the power device adjacent to the first power device is connected or not
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하는 단계; 및Determining a connection type between the first power device and a power device adjacent to the first power device when the first power device and a power device adjacent to the first power device are connected; And
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 접지를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 기준 전력기기로 선정하는 단계를 더 포함하는 부분방전 판단 방법.If the connection form of the first power device and the power device adjacent to the first power device is connected to share the ground, further comprising the step of selecting a power device adjacent to the first power device as a reference power device Judgment method.
  17. 제16항에 있어서,The method of claim 16,
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기가 연결되어 있는 경우 상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태를 판단하는 단계는When the first power device and the power device adjacent to the first power device are connected, determining the connection type of the first power device and the power device adjacent to the first power device may include:
    상기 제1 전력기기와 상기 제1 전력기기에 인접한 전력기기의 연결형태가 선로를 공유하며 연결되는 경우, 상기 제1 전력기기에 인접한 전력기기를 제2 전력기기로 선택하는 단계;Selecting a power device adjacent to the first power device as a second power device when a connection form between the first power device and a power device adjacent to the first power device is connected while sharing a line;
    상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하는 단계; 및Determining whether the second power device and a power device adjacent to the second power device satisfy an interference occurrence condition; And
    상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키지 않는 경우, 상기 제2 전력기기를 기준 전력기기로 선정하는 단계를 더 포함하는 부분방전 판단 방법.And selecting the second power device as a reference power device when the second power device and a power device adjacent to the second power device do not satisfy the interference occurrence condition.
  18. 제17항에 있어서,The method of claim 17,
    상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는지 판단하는 단계는Determining whether the second power device and the power device adjacent to the second power device satisfies an interference occurrence condition
    상기 제2 전력기기와 상기 제2 전력기기에 인접한 전력기기가 간섭 현상 발생 조건을 충족시키는 경우, 상기 제2 전력기기에 상기 제2 전력기기에 인접한 전력기기를 대입하여 다시 판단하는 부분방전 판단 방법. When the second power device and the power device adjacent to the second power device meets the interference occurrence condition, the partial discharge determination method of substituting the power device adjacent to the second power device in the second power device to determine again .
  19. 제18항에 있어서,The method of claim 18,
    상기 간섭 현상 발생 조건은 The interference occurrence condition is
    상기 제2 전력기기가 감지된 부분방전 신호가 상기 제2 전력기기와 선로를 공유하며 연결될 것을 포함하는 부분방전 판단 방법.Partial discharge determination method comprising the partial discharge signal sensed by the second power device is connected to share the line with the second power device.
  20. 제19항에 있어서,The method of claim 19,
    상기 제1 전력기기 또는 상기 기준 전력기기에 기초하여, 부분방전 발생 전력기기와 부분방전의 간섭이 일어난 전력기기를 판단하는 단계는On the basis of the first power device or the reference power device, the step of determining the power device with the partial discharge generating power device and the partial discharge interference occurs
    상기 제1 전력기기부터 상기 기준 전력기기까지 연결된 각각의 전력기기 중 상기 제1 전력기기를 제외한 전력기기가 부분방전 간섭이 발생된 전력기기로 판단하고, 상기 부분방전 신호가 감지된 전력기기 중 상기 부분방전 간섭이 발생된 전력기기를 제외한 전력기기가 부분방전 발생 전력기기로 판단하는 부분방전 판단 방법.Of the power devices connected from the first power device to the reference power device, the power device except for the first power device is determined to be a power device in which partial discharge interference occurs, and the power device in which the partial discharge signal is detected. A partial discharge determination method in which a power device excluding a power device in which partial discharge interference occurs is determined as a partial discharge generating power device.
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