JP2018004394A - 漏れ電流測定方法および漏れ電流測定装置 - Google Patents
漏れ電流測定方法および漏れ電流測定装置 Download PDFInfo
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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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
- G01R31/62—Testing of transformers
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
11 電圧検出手段
12 電流検出手段
13 処理手段
14 記憶手段
15 表示手段
Claims (3)
- 変圧器の低圧側三相巻線が三角形に結線され、S相、T相、R相のうちS相が接地された三相3線式配電線を測定対象の被測定配電線とし、この被測定配電線における絶縁抵抗の漏れ電流Iorを測定する漏れ電流測定方法であって、
前記被測定配電線のR相とT相間の相間電圧Utrを検出する電圧検出工程と、
前記被測定配電線に流れる合成漏れ電流Ioを検出する電流検出工程と、
前記相間電圧Utrから解析ウインドウ幅を求めると共に、フーリエ変換を用いて、前記相間電圧Utrの基本波実数部U1rと虚数部U1i、並びに前記合成漏れ電流Ioの基本波実数部Io1rと虚数部Io1iとを求める第1演算工程と、
下式(1)に基づいて、前記絶縁抵抗の漏れ電流Iorを求める第2演算工程と、
を行うことを特徴とする漏れ電流測定方法。
- 変圧器の低圧側三相巻線が三角形に結線され、S相、T相、R相のうちS相が接地された三相3線式配電線を測定対象の被測定配電線とし、この被測定配電線における絶縁抵抗の漏れ電流Iorを測定する漏れ電流測定装置であって、
前記被測定配電線のR相とT相間の相間電圧Utrを検出する電圧検出手段と、
前記被測定配電線に流れる合成漏れ電流Ioを検出する電流検出手段と、
前記相間電圧Utrから解析ウインドウ幅を求めると共に、フーリエ変換を用いて、前記相間電圧Utrの基本波実数部U1rと虚数部U1i、並びに前記合成漏れ電流Ioの基本波実数部Io1rと虚数部Io1iとを求める第1演算処理と、下式(1)に基づいて前記絶縁抵抗の漏れ電流Iorを求める第2演算処理を行う処理手段と、
を備えることを特徴とする漏れ電流測定装置。
- 前記処理手段は、前記測定した漏れ電流Iorと予め規定された絶縁状態判別規格値とを比較して、前記被測定配電線についての絶縁状態を判別する判別処理を行うことを特徴とする請求項2に記載の漏れ電流測定装置。
Priority Applications (2)
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JP2016130594A JP6240918B1 (ja) | 2016-06-30 | 2016-06-30 | 漏れ電流測定方法および漏れ電流測定装置 |
KR1020170047143A KR101909379B1 (ko) | 2016-06-30 | 2017-04-12 | 누설전류 측정 방법 및 누설전류 측정 장치 |
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JP2016130594A JP6240918B1 (ja) | 2016-06-30 | 2016-06-30 | 漏れ電流測定方法および漏れ電流測定装置 |
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JP6240918B1 JP6240918B1 (ja) | 2017-12-06 |
JP2018004394A true JP2018004394A (ja) | 2018-01-11 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021081397A (ja) * | 2019-11-22 | 2021-05-27 | パナソニックIpマネジメント株式会社 | 異常検出システム、異常検出方法、プログラム及び分電盤 |
Families Citing this family (1)
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CN108445397B (zh) * | 2018-02-01 | 2020-08-18 | 宁德时代新能源科技股份有限公司 | 绝缘检测电路的参数选取方法和装置、存储介质 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005227132A (ja) * | 2004-02-13 | 2005-08-25 | Meidensha Corp | 絶縁状態監視装置、および絶縁状態監視方法 |
WO2008072287A1 (ja) * | 2006-12-08 | 2008-06-19 | Ohno, Takemi | 漏洩電流検出装置及び漏洩電流検出方法 |
JP2009069065A (ja) * | 2007-09-14 | 2009-04-02 | Hioki Ee Corp | 有効漏れ電流測定器 |
US20110068802A1 (en) * | 2009-09-24 | 2011-03-24 | George William Roscoe | Ground fault detection device |
JP2013036884A (ja) * | 2011-08-09 | 2013-02-21 | Fuji Electric Fa Components & Systems Co Ltd | 絶縁監視方法及び絶縁監視装置 |
JP2013174613A (ja) * | 2010-04-12 | 2013-09-05 | Toyoji Ahei | 漏洩電流検出装置及び方法 |
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2016
- 2016-06-30 JP JP2016130594A patent/JP6240918B1/ja active Active
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- 2017-04-12 KR KR1020170047143A patent/KR101909379B1/ko active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005227132A (ja) * | 2004-02-13 | 2005-08-25 | Meidensha Corp | 絶縁状態監視装置、および絶縁状態監視方法 |
WO2008072287A1 (ja) * | 2006-12-08 | 2008-06-19 | Ohno, Takemi | 漏洩電流検出装置及び漏洩電流検出方法 |
JP2009069065A (ja) * | 2007-09-14 | 2009-04-02 | Hioki Ee Corp | 有効漏れ電流測定器 |
US20110068802A1 (en) * | 2009-09-24 | 2011-03-24 | George William Roscoe | Ground fault detection device |
JP2013174613A (ja) * | 2010-04-12 | 2013-09-05 | Toyoji Ahei | 漏洩電流検出装置及び方法 |
JP2013036884A (ja) * | 2011-08-09 | 2013-02-21 | Fuji Electric Fa Components & Systems Co Ltd | 絶縁監視方法及び絶縁監視装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021081397A (ja) * | 2019-11-22 | 2021-05-27 | パナソニックIpマネジメント株式会社 | 異常検出システム、異常検出方法、プログラム及び分電盤 |
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KR20180003414A (ko) | 2018-01-09 |
KR101909379B1 (ko) | 2018-10-17 |
JP6240918B1 (ja) | 2017-12-06 |
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