JP7256872B2 - 漏電遮断器、その漏電遮断器の制御方法、及びその漏電遮断器を含む漏電遮断器システム - Google Patents
漏電遮断器、その漏電遮断器の制御方法、及びその漏電遮断器を含む漏電遮断器システム Download PDFInfo
- Publication number
- JP7256872B2 JP7256872B2 JP2021519135A JP2021519135A JP7256872B2 JP 7256872 B2 JP7256872 B2 JP 7256872B2 JP 2021519135 A JP2021519135 A JP 2021519135A JP 2021519135 A JP2021519135 A JP 2021519135A JP 7256872 B2 JP7256872 B2 JP 7256872B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- zero
- phase current
- trip
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 20
- 238000001514 detection method Methods 0.000 claims description 91
- 230000035945 sensitivity Effects 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 11
- 230000004044 response Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000018199 S phase Effects 0.000 description 24
- 229910001219 R-phase Inorganic materials 0.000 description 15
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 206010014357 Electric shock Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/162—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems
- H02H3/165—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems for three-phase systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
- G01R25/04—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents involving adjustment of a phase shifter to produce a predetermined phase difference, e.g. zero difference
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/17—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass by means of an auxiliary voltage injected into the installation to be protected
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/325—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors involving voltage comparison
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
- H02H3/347—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Description
Claims (15)
- 三相電路のうち2つの電路に接続された単相負荷と前記三相電路間に形成された複数の漏電遮断器において、
前記複数の漏電遮断器のそれぞれは、
前記三相電路に形成された零相変流器で発生した零相電流を検出する零相電流検出部と、
前記2つの電路のそれぞれから電圧を検知する電圧検知部と、
トリップ(trip)信号が入力されると、前記2つの電路と前記単相負荷間の接点をトリップするトリップ部と、
前記零相電流検出部で零相電流が検出されると、前記電圧検知部の電圧検知結果に基づいて、前記2つの電路のうち予め設定されたレベルより大きな電圧降下が発生した電路を検出し、予め設定されたレベルより大きな電圧降下が発生した電路があれば、前記トリップ信号を生成して前記トリップ部に出力する制御部とを含み、
各漏電遮断器の制御部は、前記所定のレベルより大きな電圧降下が発生した電路と同一の電路に接続されたトリップ部のみにトリップ信号を出力することを特徴とする複数の漏電遮断器。 - 前記制御部は、
前記検出した零相電流が予め設定された設定値以上であるか否かに基づいて、前記電圧検知結果に応じて、前記予め設定されたレベルより大きな電圧降下が発生した電路を検出し、電路検出結果に応じて、前記トリップ信号を生成して出力することを特徴とする請求項1に記載の複数の漏電遮断器。 - 前記制御部は、
前記検出した零相電流が予め設定された特定電流値である設定値未満であれば、前記検出した零相電流が漏電によるものであるか否かを判断し、前記零相電流が漏電により発生したものであれば、前記電路の電圧検出結果に関係なく前記トリップ信号を生成して出力することを特徴とする請求項1に記載の複数の漏電遮断器。 - 前記零相電流検出部は、
固定接続抵抗及び複数の選択接続抵抗と、選択スイッチとを有し、前記零相変流器から入力される零相電流を、前記選択スイッチにより選択されるいずれかの選択接続抵抗と前記固定接続抵抗の合成抵抗により決定される抵抗値に基づいて電圧信号に変換する感度選択回路を含み、
前記制御部は、
前記合成抵抗により決定される特定電圧値である基準値と、前記変換された電圧信号の電圧値を比較して、前記零相電流が漏電により発生したものであるか否かを判断することを特徴とする請求項3に記載の複数の漏電遮断器。 - 前記制御部は、
前記合成抵抗に応じて前記設定値に対応する電圧値を算出し、前記感度選択回路で変換された電圧信号の電圧値と、前記設定値に対応する電圧値を比較した結果に基づいて、前記検出した零相電流が前記設定値未満であるか否かを判断することを特徴とする請求項4に記載の複数の漏電遮断器。 - 三相電路のうち2つの電路に接続された単相負荷と前記三相電路間に形成された漏電遮断器の制御方法において、
前記三相電路に形成された零相変流器で発生した零相電流を検出する第1ステップと、
検出した零相電流が予め設定された設定値以上であるか否かによって漏電又は地絡が発生したか否かを検出する第2ステップと、
前記第2ステップの検出結果が地絡発生であれば、前記2つの電路のそれぞれの電圧を検知する第3ステップと、
前記第3ステップの電圧検知結果に基づいて、予め設定されたレベルより大きな電圧降下が発生した電路があるか否かを検出する第4ステップと、
前記第4ステップの検出結果に基づいて、前記2つの電路と前記単相負荷間の接点をトリップする第5ステップとを含むことを特徴とする漏電遮断器の制御方法。 - 前記第2ステップは、
前記第2ステップの検出結果が漏電発生であれば、前記2つの電路と前記単相負荷間の接点をトリップする第2-1ステップをさらに含むことを特徴とする請求項6に記載の漏電遮断器の制御方法。 - 前記第5ステップは、
前記第4ステップの検出の結果、予め設定されたレベルより大きな電圧降下が発生した電路があれば、前記トリップを所定時間遅延させる第5-1ステップをさらに含むことを特徴とする請求項6に記載の漏電遮断器の制御方法。 - 前記第2ステップは、
前記検出した零相電流の大きさが予め設定された設定値以上であれば、前記零相電流が地絡により発生したものと判断し、
前記検出した零相電流の大きさが予め設定された設定値未満であれば、漏電が発生したか否かを判断するための予め設定された基準値と、前記検出した零相電流の大きさに応じた電圧信号の電圧値を比較して、漏電が発生したか否かを判断するステップであることを特徴とする請求項6に記載の漏電遮断器の制御方法。 - 三相電路のうち2つの電路から電力が供給される少なくとも1つの単相負荷と、
各単相負荷と前記単相負荷に電力を供給している2つの電路との間に形成され、トリップ制御信号を受信した場合に、前記2つの電路と前記単相負荷間の接点をトリップする少なくとも1つのトリップ部と、
前記三相電路に形成された零相変流器に接続され、前記零相変流器から零相電流が検出されると、前記少なくとも1つのトリップ部から各単相負荷に接続された電路の電圧検知結果を受信し、受信した電圧検知結果に基づいて、前記少なくとも1つのトリップ部の一部に前記トリップ制御信号を送信するシステム制御部とを含むことを特徴とする漏電遮断器システム。 - 前記トリップ部は、
前記システム制御部と通信接続を行う通信部と、
単相負荷に電力を供給している2つの電路のそれぞれの電圧を検知する電圧検知部と、
前記トリップ制御信号を受信した場合に、前記単相負荷に電力を供給している2つの電路と前記単相負荷間の接点をトリップする遮断部とを含み、
前記通信部は、
前記電圧検知部の電圧検知結果を前記システム制御部に送信し、前記システム制御部からトリップ制御信号を受信すると、受信したトリップ制御信号を遮断部に送ることを特徴とする請求項10に記載の漏電遮断器システム。 - 前記システム制御部は、
前記検出した零相電流の大きさと予め設定された設定値を比較し、前記検出した零相電流の大きさが前記設定値以上であれば、各トリップ部から受信した電圧検知結果から予め設定されたレベルより大きな電圧降下を検知した電圧検知部を検出し、検出した電圧検知部に対応するトリップ部にトリップ制御信号を送信することを特徴とする請求項10に記載の漏電遮断器システム。 - 前記システム制御部は、
前記検出した零相電流の大きさと予め設定された設定値を比較し、前記検出した零相電流の大きさが前記設定値未満であれば、漏電が発生したか否かを判断するための基準値に基づいて、前記零相電流が漏電により発生したものであるか否かを判断し、前記零相電流が漏電により発生したものであれば、前記少なくとも1つのトリップ部の全てにトリップ制御信号を送信することを特徴とする請求項10に記載の漏電遮断器システム。 - 前記システム制御部は、
前記零相変流器から零相電流が検出されると、前記少なくとも1つのトリップ部のそれぞれに電圧検知結果を要求し、要求に対する応答として電圧検知結果を受信することを特徴とする請求項10に記載の漏電遮断器システム。 - 前記遮断部は、
前記トリップ制御信号が受信された場合に、前記2つの電路と前記単相負荷間の接点のトリップを所定時間遅延させるための時間遅延部をさらに含むことを特徴とする請求項11に記載の漏電遮断器システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020180142925A KR102083600B1 (ko) | 2018-11-19 | 2018-11-19 | 누전 차단기 및 그 누전 차단기의 제어 방법 |
KR10-2018-0142925 | 2018-11-19 | ||
PCT/KR2019/010474 WO2020105844A1 (ko) | 2018-11-19 | 2019-08-19 | 누전 차단기 및 그 누전 차단기의 제어 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022504465A JP2022504465A (ja) | 2022-01-13 |
JP7256872B2 true JP7256872B2 (ja) | 2023-04-12 |
Family
ID=69805448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021519135A Active JP7256872B2 (ja) | 2018-11-19 | 2019-08-19 | 漏電遮断器、その漏電遮断器の制御方法、及びその漏電遮断器を含む漏電遮断器システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US11456140B2 (ja) |
JP (1) | JP7256872B2 (ja) |
KR (1) | KR102083600B1 (ja) |
CN (1) | CN112840518B (ja) |
WO (1) | WO2020105844A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111934280B (zh) * | 2020-09-09 | 2023-01-24 | 南方电网数字电网研究院有限公司 | 漏电故障检测方法、装置、存储介质和配电网关 |
CN113725811B (zh) * | 2020-12-12 | 2023-12-05 | 保定钰鑫电气科技有限公司 | 一种非有效接地***单相接地的处理方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005354883A (ja) | 2004-06-14 | 2005-12-22 | Energy Support Corp | 配電系統の開閉制御装置及び配電系統の開閉制御方法 |
JP2014196920A (ja) | 2013-03-29 | 2014-10-16 | パナソニック株式会社 | 漏電検出装置 |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0582010A (ja) | 1991-09-20 | 1993-04-02 | Toshiba Corp | 漏電遮断器 |
JPH11299082A (ja) | 1998-04-08 | 1999-10-29 | Noritz Corp | 過電圧保護機能付き漏電遮断装置 |
JP2003070151A (ja) * | 2001-08-27 | 2003-03-07 | Toshiba Corp | 保護継電装置 |
JP4264817B2 (ja) * | 2003-11-27 | 2009-05-20 | 富士電機機器制御株式会社 | 漏電遮断器 |
JP2005184945A (ja) * | 2003-12-18 | 2005-07-07 | Mitsubishi Electric Corp | 負荷連接型配電線 |
KR100638635B1 (ko) | 2005-06-02 | 2006-10-27 | (주)갑진 | 누전차단기 |
KR100678437B1 (ko) | 2005-09-20 | 2007-02-02 | 김철우 | 오동작방지 회로를 구비한 누전차단기 |
KR100712672B1 (ko) * | 2005-09-20 | 2007-05-02 | 세기이테크 주식회사 | 일체식 2단 접점 개폐구조를 갖는 자동복귀형 누전차단기 |
KR200436076Y1 (ko) * | 2006-11-04 | 2007-05-08 | 김보경 | 절연감시시스템 |
JP5166730B2 (ja) * | 2006-12-28 | 2013-03-21 | 河村電器産業株式会社 | 三相漏電遮断器 |
JP4306781B2 (ja) * | 2007-10-30 | 2009-08-05 | ダイキン工業株式会社 | 漏電検出回路 |
KR100978269B1 (ko) * | 2007-11-02 | 2010-08-26 | 엘에스산전 주식회사 | 3상용 누전 차단기의 구동 회로 |
JP5310501B2 (ja) | 2009-11-19 | 2013-10-09 | 三菱電機株式会社 | 電子式漏電遮断器 |
KR101396945B1 (ko) * | 2010-10-05 | 2014-05-19 | 엘에스산전 주식회사 | 누전 차단기 |
KR20120086557A (ko) | 2011-01-26 | 2012-08-03 | (주)한국이엔씨 | 중성선 대체기능이 구비된 분배전반 및 그 분배전반의 중성선 대체방법 |
JP2012215423A (ja) * | 2011-03-31 | 2012-11-08 | Patokkusu Japan Kk | 給電系統における漏洩電流測定装置及び漏洩電流測定方法 |
JP6221844B2 (ja) * | 2014-03-06 | 2017-11-01 | 三菱電機株式会社 | 漏電遮断器 |
JP6237533B2 (ja) | 2014-08-22 | 2017-11-29 | 三菱電機株式会社 | 漏電遮断器 |
KR101681696B1 (ko) | 2014-11-21 | 2016-12-01 | 주식회사 코본테크 | 누전차단기의 전원 중첩 제어장치 |
JP6434541B2 (ja) * | 2015-01-30 | 2018-12-05 | 三菱重工業株式会社 | 過給システム及び過給システム用制御装置並びに過給システムの運転方法 |
CN104779576B (zh) * | 2015-04-20 | 2017-12-22 | 上海山源电子科技股份有限公司 | 一种复合信号法选择性漏电保护方法和*** |
JP6697745B2 (ja) * | 2016-11-29 | 2020-05-27 | パナソニックIpマネジメント株式会社 | 直流漏電検出装置、漏電検出装置 |
JP6697746B2 (ja) * | 2016-11-29 | 2020-05-27 | パナソニックIpマネジメント株式会社 | 漏電検出装置 |
KR20180094691A (ko) | 2017-02-16 | 2018-08-24 | 엘에스산전 주식회사 | 기능 점검이 가능한 누전 차단 장치 |
EP3386051B1 (en) * | 2017-04-04 | 2021-06-23 | ABB Schweiz AG | Electronic protection device for detecting arcing fault |
US10935609B2 (en) * | 2017-09-12 | 2021-03-02 | Abb Schweiz Ag | Methods and systems for ground fault detection in a power distribution system |
KR20190128920A (ko) * | 2018-05-09 | 2019-11-19 | 주식회사 아이티이 | 전기고장 만능탐지 및 복구 배전시스템 및 그 공사방법 |
ES2911035T3 (es) * | 2018-05-18 | 2022-05-17 | Abb Schweiz Ag | Método y aparato para su uso en la protección contra fallos de toma de tierra |
JP2022059189A (ja) * | 2020-10-01 | 2022-04-13 | 富士電機株式会社 | 電力変換装置 |
JP2022059188A (ja) * | 2020-10-01 | 2022-04-13 | 富士電機株式会社 | 電力変換装置 |
-
2018
- 2018-11-19 KR KR1020180142925A patent/KR102083600B1/ko active IP Right Grant
-
2019
- 2019-08-19 US US17/291,724 patent/US11456140B2/en active Active
- 2019-08-19 CN CN201980066754.8A patent/CN112840518B/zh active Active
- 2019-08-19 WO PCT/KR2019/010474 patent/WO2020105844A1/ko active Application Filing
- 2019-08-19 JP JP2021519135A patent/JP7256872B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005354883A (ja) | 2004-06-14 | 2005-12-22 | Energy Support Corp | 配電系統の開閉制御装置及び配電系統の開閉制御方法 |
JP2014196920A (ja) | 2013-03-29 | 2014-10-16 | パナソニック株式会社 | 漏電検出装置 |
Also Published As
Publication number | Publication date |
---|---|
CN112840518B (zh) | 2023-04-11 |
CN112840518A (zh) | 2021-05-25 |
US20220013318A1 (en) | 2022-01-13 |
KR102083600B1 (ko) | 2020-03-02 |
WO2020105844A1 (ko) | 2020-05-28 |
US11456140B2 (en) | 2022-09-27 |
JP2022504465A (ja) | 2022-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100840478B1 (ko) | 전력 전송 라인용 라인 차동 보호 시스템 | |
US8854032B2 (en) | System and method for monitoring current drawn by a protected load in a self-powered electronic protection device | |
JP7256872B2 (ja) | 漏電遮断器、その漏電遮断器の制御方法、及びその漏電遮断器を含む漏電遮断器システム | |
CN111869029B (zh) | 断路器控制模块 | |
EP0513344A1 (en) | Fail-resistant solid state interruption system | |
JP5002708B2 (ja) | 電流制限装置ベースのリセット可能memsマイクロスイッチアレイ | |
KR20150073273A (ko) | 변류기 2차 회로 개방 감지 기능을 갖는 디지털 계전기 | |
JP4935455B2 (ja) | 漏電検出装置 | |
WO1999017448A1 (en) | High sensitivity electrical switching circuit | |
US9502189B2 (en) | Excitation inrush-current suppression system | |
US9252587B2 (en) | Automatic reset discrimination system and method for a self powered electronic protection device | |
JP6116499B2 (ja) | 回路遮断器 | |
KR101993558B1 (ko) | 오결선 검출이 가능한 양방향 선택 지락 보호 계전기 및 시험 장치 | |
EP1252696B1 (en) | An improved electronic earth leakage current device | |
JP4633951B2 (ja) | 単相3線式電路の電灯負荷制限器 | |
KR20120035504A (ko) | 누전 차단기 | |
JP4395009B2 (ja) | 漏電遮断器 | |
KR20220071743A (ko) | 누전 개폐기 및 누전 개폐기의 제어 방법 | |
JP2003249160A (ja) | 漏電検出装置のテスト回路 | |
KR20190092142A (ko) | 누전차단기 | |
JPS61180520A (ja) | 回路しや断器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210407 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20220128 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20220202 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220510 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220530 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220920 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20221130 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20230322 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230331 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7256872 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |