CN112986858B - 基于零序小波分解计算的接地故障判断方法 - Google Patents
基于零序小波分解计算的接地故障判断方法 Download PDFInfo
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- CN112986858B CN112986858B CN202110102669.1A CN202110102669A CN112986858B CN 112986858 B CN112986858 B CN 112986858B CN 202110102669 A CN202110102669 A CN 202110102669A CN 112986858 B CN112986858 B CN 112986858B
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- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004364 calculation method Methods 0.000 title claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000003745 diagnosis Methods 0.000 claims abstract description 4
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- 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
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Locating Faults (AREA)
Abstract
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CN202110102669.1A CN112986858B (zh) | 2021-01-26 | 2021-01-26 | 基于零序小波分解计算的接地故障判断方法 |
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CN202110102669.1A CN112986858B (zh) | 2021-01-26 | 2021-01-26 | 基于零序小波分解计算的接地故障判断方法 |
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CN112986858A CN112986858A (zh) | 2021-06-18 |
CN112986858B true CN112986858B (zh) | 2023-12-19 |
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CN114778997A (zh) * | 2022-03-01 | 2022-07-22 | 贵州电网有限责任公司 | 一种中性点经消弧线圈接地***中利用故障电流对时间导数判断故障点熄弧时刻的方法 |
CN117290788B (zh) * | 2023-11-27 | 2024-02-02 | 南昌航空大学 | 一种基于改进小波变换算法的配电网故障辨识方法及*** |
Citations (7)
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RU2005139372A (ru) * | 2005-12-15 | 2007-06-27 | Андрей Петрович Никифоров (UA) | Способ направленной защиты от однофазного замыкания на землю в распределительной электрической сети переменного тока и устройство для его осуществления |
WO2014089899A1 (zh) * | 2012-12-10 | 2014-06-19 | 国家电网公司 | 基于暂态信号小波变换的配电网单相接地故障定位方法及定位装置 |
WO2015118163A1 (en) * | 2014-02-10 | 2015-08-13 | Katholieke Universiteit Leuven | Direction detecting of a ground fault in a multiphase network |
EP3136526A1 (en) * | 2015-08-25 | 2017-03-01 | GE Energy Power Conversion Technology Ltd | Ground fault protection methods |
DE102016208322A1 (de) * | 2016-05-13 | 2017-11-16 | Bender Gmbh & Co. Kg | Verfahren und Vorrichtung zur Fehlerlichtbogen-Erkennung in einem ungeerdeten Stromversorgungssystem |
CN110441641A (zh) * | 2019-07-24 | 2019-11-12 | 南京国电南自电网自动化有限公司 | 一种基于零序直流分量的小电流接地选线方法和*** |
CN111487508A (zh) * | 2020-06-01 | 2020-08-04 | 南方电网调峰调频发电有限公司西部检修试验分公司 | 用于配电网的单相高阻接地故障辨识装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9329220B2 (en) * | 2012-08-27 | 2016-05-03 | The Texas A&M University System | Method and system for detecting arc faults and flashes using wavelets |
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2021
- 2021-01-26 CN CN202110102669.1A patent/CN112986858B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2005139372A (ru) * | 2005-12-15 | 2007-06-27 | Андрей Петрович Никифоров (UA) | Способ направленной защиты от однофазного замыкания на землю в распределительной электрической сети переменного тока и устройство для его осуществления |
WO2014089899A1 (zh) * | 2012-12-10 | 2014-06-19 | 国家电网公司 | 基于暂态信号小波变换的配电网单相接地故障定位方法及定位装置 |
WO2015118163A1 (en) * | 2014-02-10 | 2015-08-13 | Katholieke Universiteit Leuven | Direction detecting of a ground fault in a multiphase network |
EP3136526A1 (en) * | 2015-08-25 | 2017-03-01 | GE Energy Power Conversion Technology Ltd | Ground fault protection methods |
DE102016208322A1 (de) * | 2016-05-13 | 2017-11-16 | Bender Gmbh & Co. Kg | Verfahren und Vorrichtung zur Fehlerlichtbogen-Erkennung in einem ungeerdeten Stromversorgungssystem |
CN110441641A (zh) * | 2019-07-24 | 2019-11-12 | 南京国电南自电网自动化有限公司 | 一种基于零序直流分量的小电流接地选线方法和*** |
CN111487508A (zh) * | 2020-06-01 | 2020-08-04 | 南方电网调峰调频发电有限公司西部检修试验分公司 | 用于配电网的单相高阻接地故障辨识装置 |
Non-Patent Citations (2)
Title |
---|
A Novel Fault Section Location Method for Small Current Grounding Fault Based on Hilbert-Huang Transform with Wavelet Packet Transform Preprocessing;Qingzhu Wan 等;《2018 11th International Conference on Intelligent Computation Technology and Automation (ICICTA)》;365-370 * |
基于暂态小波能量的小电流接地故障选线新方法;吴乐鹏 等;《电力自动化设备》;第33卷(第5期);70-75 * |
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