JP4177802B2 - 地絡方向継電装置 - Google Patents
地絡方向継電装置 Download PDFInfo
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- JP4177802B2 JP4177802B2 JP2004297453A JP2004297453A JP4177802B2 JP 4177802 B2 JP4177802 B2 JP 4177802B2 JP 2004297453 A JP2004297453 A JP 2004297453A JP 2004297453 A JP2004297453 A JP 2004297453A JP 4177802 B2 JP4177802 B2 JP 4177802B2
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- accident
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- ground fault
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Description
Si …対象回線
CB…遮断器
VPT…母線電圧
ICT…各相電流
E…各相電圧
IZ …零相電流
Z…事故相インピーダンス
θ…位相角
11…サンプリング手段
12…事故判別手段
13…出力手段
特許出願人 辻 浩 一
代理人 弁理士 松 田 忠 秋
Claims (4)
- 変電所の母線電圧と対象回線の零相電流とをサンプリング周期ごとにサンプリングするサンプリング手段と、事故発生時に前記サンプリング手段により起動する事故判別手段とを備えてなり、該事故判別手段は、対象回線の零相電流I Z と、前記サンプリング手段によって記憶される事故前の各相電圧Eとから一線地絡時の事故相インピーダンスZ=E/I Z =R+jXを算出し、R>0、X<0の双方の成立により対象回線の内部事故を検出することを特徴とする地絡方向継電装置。
- 前記事故判別手段には、対象回線の事故時に対象回線の遮断器を引き外す出力手段を付設することを特徴とする請求項1記載の地絡方向継電装置。
- 前記事故判別手段は、事故相インピーダンスZを各相ごとに算出することにより内部事故の際の事故相を特定することを特徴とする請求項1または請求項2記載の地絡方向継電装置。
- 前記サンプリング手段は、対象回線の各相電流を併せてサンプリングすることを特徴とする請求項1ないし請求項3のいずれか記載の地絡方向継電装置。
Priority Applications (1)
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JP2004297453A JP4177802B2 (ja) | 2004-10-12 | 2004-10-12 | 地絡方向継電装置 |
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JP2004297453A JP4177802B2 (ja) | 2004-10-12 | 2004-10-12 | 地絡方向継電装置 |
Publications (2)
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JP2006115555A JP2006115555A (ja) | 2006-04-27 |
JP4177802B2 true JP4177802B2 (ja) | 2008-11-05 |
Family
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JP2004297453A Expired - Fee Related JP4177802B2 (ja) | 2004-10-12 | 2004-10-12 | 地絡方向継電装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107947128A (zh) * | 2017-12-28 | 2018-04-20 | 长园深瑞继保自动化有限公司 | 快速判断并选出母线ct断线支路的方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5361552B2 (ja) * | 2009-06-10 | 2013-12-04 | 三菱電機株式会社 | 距離継電装置 |
JP5537318B2 (ja) * | 2010-07-26 | 2014-07-02 | 株式会社東芝 | 配電線路の事故区間弁別手段 |
CN103779844B (zh) * | 2014-02-11 | 2016-05-18 | 华北电力大学 | 基于虚拟电压降落的自适应距离保护方法 |
CN103837775A (zh) * | 2014-03-17 | 2014-06-04 | 国家电网公司 | 一种接地网腐蚀诊断的方法及装置 |
CN106405335B (zh) * | 2016-11-02 | 2019-02-05 | 华北电力大学 | 风电t接线路的接地故障整定方法 |
-
2004
- 2004-10-12 JP JP2004297453A patent/JP4177802B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107947128A (zh) * | 2017-12-28 | 2018-04-20 | 长园深瑞继保自动化有限公司 | 快速判断并选出母线ct断线支路的方法 |
Also Published As
Publication number | Publication date |
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JP2006115555A (ja) | 2006-04-27 |
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