JP2017502632A - 三相漏電遮断器 - Google Patents
三相漏電遮断器 Download PDFInfo
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- JP2017502632A JP2017502632A JP2016531671A JP2016531671A JP2017502632A JP 2017502632 A JP2017502632 A JP 2017502632A JP 2016531671 A JP2016531671 A JP 2016531671A JP 2016531671 A JP2016531671 A JP 2016531671A JP 2017502632 A JP2017502632 A JP 2017502632A
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- leakage current
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- 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
- H02H3/08—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 excess current
- H02H3/083—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 excess current for three-phase systems
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
図3は、漏洩電流Iの瞬時値i(t)と基準電圧Vの瞬時値v(t)とを示す。i(t)は、v(t)より位相がθだけ進んでいる。したがって、
式(7)を解くと、
図4は、本発明の漏電遮断器の構成を示す。漏電遮断器は、2つの場合に作動する。
2:漏洩電流検出部
3:漏洩電流許容値設定部
4:第1比較器
5:回路遮断器具
6:接点
7:基準電圧検出部
8:変化漏洩電流算定部
9;変化漏洩電流許容値設定部
10:第2比較器
Claims (3)
- 三相漏電遮断器であって、
三相電源を遮断するための接点;
零相変流器;
前記零相変流器で漏洩電流を検出する漏洩電流検出部;
漏洩電流許容値設定部;
前記漏洩電流検出部で検出された漏洩電流検出値と、前記漏洩電流許容値設定部で設定された漏洩電流許容値とを比較する第1比較器;
前記漏洩電流を三相電源の半周期間隔で検出し、半周期の前と後に検出した2つの漏洩電流のベクトル値を減算し、半周期の間に変化した変化漏洩電流を算定する変化漏洩電流算定部;
変化漏洩電流許容値設定部;
前記変化漏洩電流算定部で算定された変化漏洩電流算定値と、前記変化漏洩電流設定部で設定された変化漏洩電流許容値とを比較する第2比較器;および
前記漏洩電流検出値が前記漏洩電流許容値を超える場合、または前記変化漏洩電流算定値が前記変化漏洩電流許容値を超える場合に作動し、前記接点を開路する回路遮断器具を含むことを特徴とする三相漏電遮断器。 - 前記三相漏電遮断器は、さらに基準電圧を検出する基準電圧検出部を含み、前記変化漏洩電流算定部は、前記基準電圧の毎半周期ごとに漏洩電流の平行成分と垂直成分を計算する平行成分および垂直成分計算部;前記平行成分と垂直成分とのそれぞれの半周期前後の計算結果を格納する、半周期前計算結果格納部および半周期後計算結果格納部;および前記半周期前計算結果と、半周期後計算結果との差を計算する漏洩電流減算部を含み、前記三相電源の半周期の前と後に検出した2つの漏洩電流を各々前記基準電圧に対する平行成分と垂直成分とに分解し、変化漏洩電流を算定することを特徴とする請求項1に記載の三相漏電遮断器。
- 前記基準電圧検出部は、前記三相電源で任意の線間電圧を選び、三相電源の毎半周期T/2の間に前記半周期の第1のT/4の第1矩形波電圧と、前記半周期の第2のT/4の第2矩形波電圧とを繰り返し発生し、
前記平行成分および垂直成分計算部は、前記第1矩形波電圧により作動する第1スイッチ;第2矩形波電圧により作動する第2スイッチ;前記第1スイッチが作動する時、漏洩電流の瞬時値を前記第1のT/4で積分して第1積分値を算出する第1積分器;前記第2スイッチが作動する時、前記第2のT/4で第2積分値を算出する第2積分器;前記第1積分値と第2積分値とを加算して平行成分を算定する加算器;および前記第1積分値で第2積分値を減算して垂直成分を算定する減算器とを含み、前記2つの漏洩電流の基準電圧に対する平行成分と垂直成分とを算定することを特徴とする請求項2に記載の三相漏電遮断器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2013-0137624 | 2013-11-13 | ||
KR1020130137624A KR101517159B1 (ko) | 2013-11-13 | 2013-11-13 | 감전보호 3상 누전차단기 |
PCT/KR2014/010010 WO2015072672A1 (ko) | 2013-11-13 | 2014-10-23 | 감전보호 3상 누전차단기 |
Publications (2)
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JP2017502632A true JP2017502632A (ja) | 2017-01-19 |
JP6201050B2 JP6201050B2 (ja) | 2017-09-20 |
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JP2016531671A Active JP6201050B2 (ja) | 2013-11-13 | 2014-10-23 | 三相漏電遮断器 |
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US (1) | US9923361B2 (ja) |
JP (1) | JP6201050B2 (ja) |
KR (1) | KR101517159B1 (ja) |
CN (1) | CN105765813B (ja) |
WO (1) | WO2015072672A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2018221619A1 (ja) * | 2017-05-30 | 2019-11-07 | 株式会社 シーディエヌ | 漏電検出方法 |
Families Citing this family (8)
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DE102015200008A1 (de) * | 2015-01-02 | 2016-07-07 | Airbus Operations Gmbh | Offset Fehlerstrom-Schutzeinrichtung |
KR101800364B1 (ko) * | 2015-10-13 | 2017-11-22 | 주식회사 에렐 | 태양광 발전 시스템용 누전 차단기 및 누전 차단 방법 |
CN105977906B (zh) * | 2015-11-26 | 2018-08-10 | 中国农业大学 | 剩余电流保护方法和系统 |
KR20190028171A (ko) * | 2017-09-08 | 2019-03-18 | (주)토즈테크 | 저항성 누설전류검출모듈을 갖는 분전함 |
CN109950860A (zh) * | 2019-02-26 | 2019-06-28 | 广东珠江开关有限公司 | 漏电检测判断方法及适用于低压配电网的漏电保护系统 |
CN111224376B (zh) * | 2020-04-10 | 2020-09-25 | 湖南省湘电试研技术有限公司 | 低压配电网防触电保护方法及保护装置 |
KR102243149B1 (ko) * | 2021-01-12 | 2021-04-22 | 사단법인 한마음장애인복지회 | 누설 전류의 고조파 특성을 고려한 3상 감전 보호 장치 및 이를 포함한 배전반 |
CN115410846A (zh) * | 2021-05-16 | 2022-11-29 | 武汉领普科技有限公司 | 开关控制方法、自发电开关与接收端 |
Citations (3)
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JPH0919046A (ja) * | 1995-04-28 | 1997-01-17 | Mitsubishi Electric Corp | 絶縁劣化診断装置 |
JP2008032660A (ja) * | 2006-07-31 | 2008-02-14 | Chugoku Electric Power Co Inc:The | 漏洩電流測定装置及び測定方法 |
JP2011015583A (ja) * | 2009-07-06 | 2011-01-20 | Fuji Electric Fa Components & Systems Co Ltd | 漏電検出方法、漏電検出装置及び漏電遮断器 |
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US4161761A (en) * | 1977-09-06 | 1979-07-17 | Mcgraw-Edison Company | Proportional ground current relay |
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US20030043516A1 (en) * | 1998-06-19 | 2003-03-06 | Ahlstrom Michael R. | Electrical ground fault protection circuit |
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JP5190635B2 (ja) * | 2007-09-26 | 2013-04-24 | テンパール工業株式会社 | 抵抗分地絡電流を検出する装置 |
KR101024077B1 (ko) * | 2009-05-21 | 2011-03-22 | 전주대학교 산학협력단 | 형광등용 아이쥐알 누전차단기 |
KR101225125B1 (ko) * | 2012-08-29 | 2013-01-22 | (주) 퓨처파워텍 | 전기품질 감시분석을 통한 사고예측 진단기능이 있는 원격자동제어시스템 및 그 제어방법 |
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- 2014-10-23 US US15/036,771 patent/US9923361B2/en active Active
- 2014-10-23 CN CN201480061017.6A patent/CN105765813B/zh active Active
- 2014-10-23 WO PCT/KR2014/010010 patent/WO2015072672A1/ko active Application Filing
- 2014-10-23 JP JP2016531671A patent/JP6201050B2/ja active Active
Patent Citations (3)
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JPH0919046A (ja) * | 1995-04-28 | 1997-01-17 | Mitsubishi Electric Corp | 絶縁劣化診断装置 |
JP2008032660A (ja) * | 2006-07-31 | 2008-02-14 | Chugoku Electric Power Co Inc:The | 漏洩電流測定装置及び測定方法 |
JP2011015583A (ja) * | 2009-07-06 | 2011-01-20 | Fuji Electric Fa Components & Systems Co Ltd | 漏電検出方法、漏電検出装置及び漏電遮断器 |
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JPWO2018221619A1 (ja) * | 2017-05-30 | 2019-11-07 | 株式会社 シーディエヌ | 漏電検出方法 |
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Publication number | Publication date |
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CN105765813B (zh) | 2018-07-31 |
CN105765813A (zh) | 2016-07-13 |
JP6201050B2 (ja) | 2017-09-20 |
KR101517159B1 (ko) | 2015-05-04 |
WO2015072672A1 (ko) | 2015-05-21 |
US20160301201A1 (en) | 2016-10-13 |
US9923361B2 (en) | 2018-03-20 |
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