JP6369775B2 - 漏電検出装置 - Google Patents
漏電検出装置 Download PDFInfo
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- JP6369775B2 JP6369775B2 JP2013073657A JP2013073657A JP6369775B2 JP 6369775 B2 JP6369775 B2 JP 6369775B2 JP 2013073657 A JP2013073657 A JP 2013073657A JP 2013073657 A JP2013073657 A JP 2013073657A JP 6369775 B2 JP6369775 B2 JP 6369775B2
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- JP
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- Prior art keywords
- leakage
- value
- leakage detection
- wave
- level
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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
- H02H3/26—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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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
本発明の実施の形態に係る漏電検出装置について図面を参照して説明する。図1に示す漏電検出装置1は、零相変流器11、演算部12、波形記憶部13、及び漏電検出部14を備える。
11 零相変流器
12 演算部
13 波形記憶部
14 漏電検出部
Claims (3)
- 交流系統が貫通する零相変流器と、
前記零相変流器からの出力電流を用いて演算値を算出する演算部と、
前記演算部の演算値に基づいて、前記交流系統に漏電が発生していることを示す漏電検出信号を遮断機構部に出力する漏電検出部と、を備える漏電検出装置において、
前記漏電検出部は、出力電流の連続する複数半波波形の内、少なくとも所定割合以上の半波の前記演算値が漏電レベル以上の場合において、漏電状態とみなして前記漏電検出信号を遮断機構部に出力し、
前記漏電検出部は、連続する3半波波形のうち、1半波目の演算値が漏電レベル以上、且つ2半波目の演算値が漏電レベル未満である場合において、3半波目の演算値が漏電レベル以上となる場合には、漏電状態とみなして前記漏電検出信号を遮断機構部に出力する、ことを特徴とする漏電検出装置。 - 前記演算値は、前記零相変流器からの出力電流の実効値、当該出力電流の平均値、又は当該出力電流の積分値のいずれかである、ことを特徴とする請求項1に記載の漏電検出装置。
- 交流系統が貫通する零相変流器からの出力電流を用いて演算値を算出する演算ステップと、
前記演算ステップにおける演算値に基づいて、前記交流系統に漏電が発生していることを示す漏電検出信号を遮断機構部に出力する漏電検出ステップと、
出力電流の連続する複数半波波形の内、少なくとも所定割合以上の半波の前記演算値が漏電レベル以上の場合において、漏電状態とみなして前記漏電検出信号を遮断機構部に出力する判定ステップと、をコンピュータに実行させ、
前記判定ステップにおいては、連続する3半波波形のうち、1半波目の演算値が漏電レベル以上、且つ2半波目の演算値が漏電レベル未満である場合において、3半波目の演算値が漏電レベル以上となる場合において、漏電状態とみなして前記漏電検出信号を遮断機構部に出力する、ことを特徴とするプログラム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013073657A JP6369775B2 (ja) | 2013-03-29 | 2013-03-29 | 漏電検出装置 |
PCT/JP2014/000959 WO2014155957A1 (ja) | 2013-03-29 | 2014-02-24 | 漏電検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013073657A JP6369775B2 (ja) | 2013-03-29 | 2013-03-29 | 漏電検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014199718A JP2014199718A (ja) | 2014-10-23 |
JP6369775B2 true JP6369775B2 (ja) | 2018-08-08 |
Family
ID=51622980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013073657A Expired - Fee Related JP6369775B2 (ja) | 2013-03-29 | 2013-03-29 | 漏電検出装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP6369775B2 (ja) |
WO (1) | WO2014155957A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6019069B2 (ja) * | 2014-08-08 | 2016-11-02 | 株式会社Nttファシリティーズ | 配線用遮断器、保護継電器、配線遮断方法及び配線遮断プログラム |
CN105572530A (zh) * | 2015-12-11 | 2016-05-11 | 国网北京市电力公司 | 漏电检测装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53107640A (en) * | 1977-03-01 | 1978-09-19 | Mitsubishi Electric Corp | Grounding fault detector |
JPH04109178A (ja) * | 1990-08-29 | 1992-04-10 | Kyushu Electric Power Co Inc | 地絡事故検出センサ |
JP2010048746A (ja) * | 2008-08-25 | 2010-03-04 | Hioki Ee Corp | 絶縁監視装置 |
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 |
-
2013
- 2013-03-29 JP JP2013073657A patent/JP6369775B2/ja not_active Expired - Fee Related
-
2014
- 2014-02-24 WO PCT/JP2014/000959 patent/WO2014155957A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2014199718A (ja) | 2014-10-23 |
WO2014155957A1 (ja) | 2014-10-02 |
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