JP2021081400A - 配電線の1相地絡事故の線選択方法及びコンピューター読み取り可能な記憶媒体 - Google Patents
配電線の1相地絡事故の線選択方法及びコンピューター読み取り可能な記憶媒体 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
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- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
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- 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
- G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
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- G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods
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- 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
- 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
- H02H3/162—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 for ac systems
- H02H3/165—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 for ac systems for three-phase systems
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
Description
高速フーリエ変換(FFT)を使用して、相電流進行波差の振幅及び位相を取得する。
Claims (7)
- 相電流進行波の比較に基づく配電線の1相地絡事故の線選択方法であって、
配電線上で三相電流進行波を同期的に収集し、且つ母線から線路への方向を電流の正方向とし、
配電線に1相地絡事故が発生した場合、事故前後の三相電流進行波差の振幅と極性関係を比較し、
1つの相の電流進行波差の振幅が他の2つの相の電流進行波差の振幅より1.5倍以上大きく、且つ振幅が最大である相の電流進行波差の極性が他の2つの相の電流進行波差の極性と反対である場合、事故が測定点の負荷側の線路で発生したと判定し、且つ電流進行波差の振幅が最大である相が事故相であると判定し、
三相電流進行波差の振幅間の差が所定値を超えず、且つ極性が一致している場合、事故が測定点の電源側の線路で発生したと判定すること、を含む ことを特徴とする、配電線の1相地絡事故の線選択方法。 - 前記測定点を変電所における配電線の出力端として選択し、前記三相電流進行波は全部の母線における全ての出力線の三相電流進行波であることを特徴とする、請求項1に記載の配電線の1相地絡事故の線選択方法。
- 前記測定点を配電線上の分岐点として選択し、前記配電線上の分岐線路における三相電流進行波を収集することを特徴とする、請求項1に記載の配電線の1相地絡事故の線選択方法。
- 配電線の通常の運転状態での、通常の定常状態の三相電流進行波をリアルタイムに収集して保存すること、をさらに含むことを特徴とする、請求項1に記載の配電線の1相地絡事故の線選択方法。
- 前記事故前後の三相電流進行波差の振幅と極性関係を比較することは、
1相地絡事故の発生が検出された後に、1相地絡事故が発生した後の定常状態の三相電流進行波が収集され、事故後の前記定常状態の三相電流進行波から事故前の対応する前記定常状態の三相電流進行波を減算することにより、定常状態の三相電流進行波差を取得し、前記定常状態の三相電流進行波差から前記三相電流進行波差の振幅及び極性を算出すること、を含むことを特徴とする、請求項4に記載の配電線の1相地絡事故の線選択方法。 - 前記測定点の三相電流進行波をリアルタイムに収集し、
収集された前記三相電流進行波と1周波前の三相電流進行波との差を作成し、且つ前記三相電流進行波差を予め設定された閾値と比較し、三相電流進行波差のいずれか1相が予め設定された閾値より大きい場合、地絡線路の判定を開始することをさらに含むことを特徴とする、請求項1から5のいずれか一項に記載の配電線の1相地絡事故の線選択方法。 - コンピュータプログラムが記憶されたコンピューター読み取り可能な記憶媒体であって、
前記コンピュータプログラムが実行される時に、請求項1から6のいずれか一項に記載の配電線の1相地絡事故の線選択方法のステップを実現することを特徴とする、コンピューター読み取り可能な記憶媒体。
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Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210144586A (ko) | 2020-05-22 | 2021-11-30 | 주식회사 엘지에너지솔루션 | 무지부 프레스부를 포함하는 전극 압연 장치 및 이를 이용한 전극 압연 방법 |
CN111766534B (zh) * | 2020-06-07 | 2021-07-13 | 中车永济电机有限公司 | 牵引变流器接地故障检测方法及装置 |
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CN117310554A (zh) * | 2023-10-31 | 2023-12-29 | 华能金昌光伏发电有限公司 | 一种光伏配电网的集电线路单相接地故障检测方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0534397A (ja) * | 1991-07-30 | 1993-02-09 | Fujikura Ltd | 高圧ケーブルの地絡予知方法 |
CN101154806A (zh) * | 2007-10-11 | 2008-04-02 | 天津大学 | 两相ta配电网单相接地故障选线的方法 |
CN201532430U (zh) * | 2009-10-30 | 2010-07-21 | 甘肃省电力公司兰州供电公司 | 中性点经消弧线圈接地***配电线路故障选线装置 |
CN102185290A (zh) * | 2011-03-03 | 2011-09-14 | 清华大学 | 单相接地故障自愈方法 |
CN102420420A (zh) * | 2011-12-05 | 2012-04-18 | 清华大学 | 单相接地保护方法和*** |
CN202975238U (zh) * | 2012-09-13 | 2013-06-05 | 山西省电力公司大同供电分公司 | 一种小电流接地***故障暂态行波检测装置 |
CN106646139A (zh) * | 2016-12-30 | 2017-05-10 | 华北电力大学 | 一种基于三相电流幅值分析的配电网故障定位方法 |
CN106841913A (zh) * | 2017-01-13 | 2017-06-13 | 清华大学 | 配电线路故障测距方法 |
US20180364293A1 (en) * | 2016-01-20 | 2018-12-20 | Abb Schweiz Ag | Fault Detection Of A Transmission Line |
CN109301800A (zh) * | 2018-10-23 | 2019-02-01 | 贵州电网有限责任公司 | 基于行波的配电线路自适应保护方法及*** |
CN110456226A (zh) * | 2019-08-22 | 2019-11-15 | 清华大学 | 一种输电线路的故障测距*** |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1673764A (zh) * | 2004-12-17 | 2005-09-28 | 魏洪文 | 小电流接地***单相接地的故障选线和测矩方法 |
CN100418282C (zh) * | 2005-01-20 | 2008-09-10 | 长沙理工大学 | 配电网单相接地故障保护方法 |
KR101008416B1 (ko) * | 2008-10-28 | 2011-01-14 | 한국전력공사 | 과전류 계전기의 역조류 방지 장치 및 그의 구동 방법 |
CN101551433B (zh) * | 2009-05-05 | 2011-04-06 | 昆明理工大学 | 一种利用hht检测的配电网馈出线路故障选线方法 |
CN101923137A (zh) * | 2010-06-30 | 2010-12-22 | 湖南湘能电气自动化有限公司 | 小电流接地***单相接地故障选线方法 |
US20130015878A1 (en) * | 2011-06-20 | 2013-01-17 | Erlphase Power Technologies Limited | Power system fault zone detection |
WO2015118163A1 (en) | 2014-02-10 | 2015-08-13 | Katholieke Universiteit Leuven | Direction detecting of a ground fault in a multiphase network |
CN103777115B (zh) * | 2014-02-13 | 2017-02-01 | 西南交通大学 | 基于故障暂态与稳态信号波速差的输电线路单端定位方法 |
CN104360226B (zh) * | 2014-10-31 | 2017-01-18 | 国家电网公司 | 基于电流初始行波极性的变电站电缆出线故障监测方法 |
CN104483594A (zh) * | 2014-12-08 | 2015-04-01 | 国网山东省电力公司日照供电公司 | 一种小电流接地故障行波选线方法 |
CN105203923B (zh) * | 2015-09-18 | 2018-08-14 | 国家电网公司 | 基于行波幅值测度的配电网电缆故障监测方法 |
CN105403807B (zh) * | 2015-09-29 | 2018-11-27 | 昆明理工大学 | 一种三段线缆混合直流输电线路故障区段识别的智能方法 |
CN105244861B (zh) * | 2015-10-23 | 2018-04-10 | 清华大学 | 输电线路的保护方法和输电线路的保护装置 |
CN105548806A (zh) * | 2015-12-14 | 2016-05-04 | 山东理工大学 | 一种基于暂态行波的小电流接地故障选线方法 |
US10236675B2 (en) * | 2016-07-26 | 2019-03-19 | Schweitzer Engineering Laboratories, Inc. | Fault detection and protection during steady state using traveling waves |
US10295585B2 (en) * | 2016-11-11 | 2019-05-21 | Schweitzer Engineering Laboratories, Inc. | Traveling wave based single end fault location |
EP3351949B1 (de) | 2017-01-18 | 2019-08-21 | Siemens Aktiengesellschaft | Verfahren und einrichtung zum ermitteln des fehlerortes eines erdschlusses bezüglich einer leitung eines dreiphasigen elektrischen energieversorgungsnetzes mit nicht geerdetem sternpunkt |
CN106997016B (zh) * | 2017-03-29 | 2019-05-10 | 中国农业大学 | 一种低压配电线路断线故障识别方法及装置 |
CN107219440B (zh) * | 2017-04-11 | 2018-11-27 | 中国矿业大学 | 单端辐射型配电网单相接地故障的定位方法 |
CN108336720B (zh) * | 2017-12-18 | 2019-09-20 | 清华大学 | 单相接地行波保护方法及装置和计算机设备 |
CN108306263B (zh) * | 2018-01-15 | 2019-09-20 | 清华大学 | 电力线路行波差动保护方法、装置、设备及介质 |
US10763663B2 (en) * | 2018-02-27 | 2020-09-01 | Abb Power Grids Switzerland Ag | High speed protection of power transmission lines |
-
2019
- 2019-11-23 CN CN201911160418.8A patent/CN111007427B/zh active Active
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Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0534397A (ja) * | 1991-07-30 | 1993-02-09 | Fujikura Ltd | 高圧ケーブルの地絡予知方法 |
CN101154806A (zh) * | 2007-10-11 | 2008-04-02 | 天津大学 | 两相ta配电网单相接地故障选线的方法 |
CN201532430U (zh) * | 2009-10-30 | 2010-07-21 | 甘肃省电力公司兰州供电公司 | 中性点经消弧线圈接地***配电线路故障选线装置 |
CN102185290A (zh) * | 2011-03-03 | 2011-09-14 | 清华大学 | 单相接地故障自愈方法 |
CN102420420A (zh) * | 2011-12-05 | 2012-04-18 | 清华大学 | 单相接地保护方法和*** |
CN202975238U (zh) * | 2012-09-13 | 2013-06-05 | 山西省电力公司大同供电分公司 | 一种小电流接地***故障暂态行波检测装置 |
US20180364293A1 (en) * | 2016-01-20 | 2018-12-20 | Abb Schweiz Ag | Fault Detection Of A Transmission Line |
CN106646139A (zh) * | 2016-12-30 | 2017-05-10 | 华北电力大学 | 一种基于三相电流幅值分析的配电网故障定位方法 |
CN106841913A (zh) * | 2017-01-13 | 2017-06-13 | 清华大学 | 配电线路故障测距方法 |
CN109301800A (zh) * | 2018-10-23 | 2019-02-01 | 贵州电网有限责任公司 | 基于行波的配电线路自适应保护方法及*** |
CN110456226A (zh) * | 2019-08-22 | 2019-11-15 | 清华大学 | 一种输电线路的故障测距*** |
Non-Patent Citations (1)
Title |
---|
DUAN JIAN-DONG,ZHANG BAO-HUI,LUO SI-BEI: "Research of Traveling-wave Differential Bus Protection Based on Wavelet Transform", IEEE/PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXHIBITION: ASIA AND PACIFIC, JPN6021000183, 2005, pages 1 - 4, XP010885859, ISSN: 0004423215 * |
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