JP6964197B2 - 漏電遮断器 - Google Patents
漏電遮断器 Download PDFInfo
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- JP6964197B2 JP6964197B2 JP2020543757A JP2020543757A JP6964197B2 JP 6964197 B2 JP6964197 B2 JP 6964197B2 JP 2020543757 A JP2020543757 A JP 2020543757A JP 2020543757 A JP2020543757 A JP 2020543757A JP 6964197 B2 JP6964197 B2 JP 6964197B2
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- component
- ratio
- leakage
- leakage current
- current value
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- 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
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
-
- 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
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
-
- 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
-
- 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
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
-
- 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
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
-
- 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
- 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
- H02H3/33—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
- H02H3/332—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 with means responsive to dc component in the fault current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
Claims (7)
- 漏電遮断器において、
回路から漏れた電流による漏れ電流検出信号を出力する漏れ電流検出部と、
前記漏れ電流検出部から出力される漏れ電流検出信号に基づいて、基本波成分の漏れ電流の大きさ、第3高調波成分の比率、及び陽極脈動ピーク電流値と陰極脈動ピーク電流値の比率を出力する変換部と、
前記変換部から出力される前記基本波成分の漏れ電流の大きさ、前記第3高調波成分の比率、及び前記陽極脈動ピーク電流値と前記陰極脈動ピーク電流値の比率と予め設定された対応基準値とを比較し、交流成分の漏れ電流の発生の有無又は直流成分の漏れ電流の発生の有無を判定し、交流成分又は直流成分の漏れ電流が発生したと判定するとトリップ制御信号を出力する制御部とを含む、漏電遮断器。 - 前記変換部は、
アナログ信号である前記漏れ電流検出信号をサンプリングして時間領域のデジタル信号に変換するアナログ/デジタル変換部と、
前記変換されたデジタル信号を離散フーリエ変換して周波数領域のデジタル信号にして出力する離散フーリエ変換部と、
前記離散フーリエ変換されたデジタル信号に基づいて、前記基本波成分の漏れ電流の大きさ及び前記第3高調波成分の大きさを判定し、前記基本波成分の漏れ電流の大きさに対する前記第3高調波成分の大きさの比率である前記第3高調波成分の比率を算出する交流成分変換部と、
前記離散フーリエ変換されたデジタル信号に基づいて、前記陽極脈動ピーク電流値と前記陰極脈動ピーク電流値の比率を算出する直流成分変換部とを含むことを特徴とする請求項1に記載の漏電遮断器。 - 前記対応基準値は、
漏れ電流の感度に応じて設定される第1基準電流値と、
回路遮断が必要な漏れ電流を区別するように設定され、前記第1基準電流値を超える第2基準電流値とを含むことを特徴とする請求項1に記載の漏電遮断器。 - 前記制御部は、
前記基本波成分の漏れ電流の大きさが前記第2基準電流値より小さくないと、発生回数をカウントし、
前記カウントした発生回数が所定の閾値に達すると、交流成分の漏れ電流が発生したと判定してトリップ制御信号を出力するように構成されることを特徴とする請求項3に記載の漏電遮断器。 - 前記制御部は、
前記第3高調波成分の比率と所定の前記第3高調波成分の基準比率とを比較し、前記第3高調波成分の比率が前記第3高調波成分の基準比率より小さいと、発生回数をカウントし、
前記カウントした発生回数が所定の閾値に達すると、交流成分の漏れ電流が発生したと判定してトリップ制御信号を出力するように構成されることを特徴とする請求項2に記載の漏電遮断器。 - 前記制御部は、
前記陽極脈動ピーク電流値と前記陰極脈動ピーク電流値の比率が所定の基準比率より小さくないと、発生回数をカウントし、
前記カウントした発生回数が所定の閾値に達すると、直流成分の漏れ電流が発生したと判定してトリップ制御信号を出力するように構成されることを特徴とする請求項2に記載の漏電遮断器。 - 前記制御部は、
前記陽極脈動ピーク電流値と前記陰極脈動ピーク電流値の比率が前記所定の基準比率より小さいと、前記カウントした発生回数を初期化するように構成されることを特徴とする請求項6に記載の漏電遮断器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2018-0036112 | 2018-03-28 | ||
KR1020180036112A KR102017805B1 (ko) | 2018-03-28 | 2018-03-28 | 누전 차단기 |
PCT/KR2018/014327 WO2019190018A1 (ko) | 2018-03-28 | 2018-11-21 | 누전 차단기 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021514102A JP2021514102A (ja) | 2021-06-03 |
JP6964197B2 true JP6964197B2 (ja) | 2021-11-10 |
Family
ID=67951718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020543757A Active JP6964197B2 (ja) | 2018-03-28 | 2018-11-21 | 漏電遮断器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11307265B2 (ja) |
EP (1) | EP3780061A4 (ja) |
JP (1) | JP6964197B2 (ja) |
KR (1) | KR102017805B1 (ja) |
CN (1) | CN111819652B (ja) |
WO (1) | WO2019190018A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102344488B1 (ko) | 2019-12-05 | 2021-12-28 | (주)아이티공간 | 스마트 누전차단기 |
KR102468642B1 (ko) * | 2020-07-09 | 2022-11-18 | 엘에스일렉트릭(주) | 누전 차단기 및 그 누전 차단기의 제어 방법 |
CN112379153B (zh) * | 2020-10-30 | 2023-05-26 | 阳光电源股份有限公司 | 一种直流振荡检测电路、直流电弧检测电路及逆变器 |
CN114264972A (zh) * | 2021-12-15 | 2022-04-01 | 浙江巨磁智能技术有限公司 | 一种具有双Tirp功能的漏电流传感器实现方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4247879A (en) * | 1978-04-19 | 1981-01-27 | Westinghouse Electric Corp. | People protecting ground fault circuit breaker utilizing waveform characteristics |
KR0141823B1 (ko) * | 1992-12-15 | 1998-08-17 | 김회수 | 차동계전기의 돌입 및 과여자시 오동작 방지방법 |
JPH07312823A (ja) * | 1994-05-16 | 1995-11-28 | Toshiba Fa Syst Eng Kk | 直流漏電検出保護装置 |
KR100442506B1 (ko) * | 2001-09-25 | 2004-07-30 | 주식회사프로컴시스템 | 전압-전류 추이를 이용한 변압기 보호 계전 방법 |
KR100638635B1 (ko) * | 2005-06-02 | 2006-10-27 | (주)갑진 | 누전차단기 |
JP2011200024A (ja) * | 2010-03-19 | 2011-10-06 | Kansai Electric Power Co Inc:The | 低圧配電系統の漏電検出装置 |
TWI502208B (zh) * | 2011-03-23 | 2015-10-01 | Panasonic Corp | 漏電偵測裝置 |
KR20150081943A (ko) * | 2014-01-07 | 2015-07-15 | 엘에스산전 주식회사 | 누전차단기 |
JP2016144297A (ja) * | 2015-02-02 | 2016-08-08 | 三菱電機株式会社 | 比率差動継電装置 |
KR101616797B1 (ko) | 2016-03-28 | 2016-04-29 | 엘에스산전 주식회사 | 누전차단기 |
JP6725104B2 (ja) | 2016-04-04 | 2020-07-15 | 新日本無線株式会社 | 漏電検出装置 |
JP6573571B2 (ja) * | 2016-04-25 | 2019-09-11 | 三菱電機株式会社 | 漏電継電器、漏電遮断器及びそれらの制御方法 |
-
2018
- 2018-03-28 KR KR1020180036112A patent/KR102017805B1/ko active IP Right Grant
- 2018-11-21 CN CN201880091048.4A patent/CN111819652B/zh active Active
- 2018-11-21 US US16/975,528 patent/US11307265B2/en active Active
- 2018-11-21 WO PCT/KR2018/014327 patent/WO2019190018A1/ko unknown
- 2018-11-21 JP JP2020543757A patent/JP6964197B2/ja active Active
- 2018-11-21 EP EP18912092.6A patent/EP3780061A4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN111819652B (zh) | 2023-03-14 |
CN111819652A (zh) | 2020-10-23 |
JP2021514102A (ja) | 2021-06-03 |
US11307265B2 (en) | 2022-04-19 |
KR102017805B1 (ko) | 2019-09-03 |
EP3780061A1 (en) | 2021-02-17 |
EP3780061A4 (en) | 2022-01-05 |
WO2019190018A1 (ko) | 2019-10-03 |
US20210035764A1 (en) | 2021-02-04 |
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