CN110954743B - Distributed wave recording device and low-current grounding line selection method - Google Patents
Distributed wave recording device and low-current grounding line selection method Download PDFInfo
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- CN110954743B CN110954743B CN201911308769.9A CN201911308769A CN110954743B CN 110954743 B CN110954743 B CN 110954743B CN 201911308769 A CN201911308769 A CN 201911308769A CN 110954743 B CN110954743 B CN 110954743B
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- 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
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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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
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
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CN201911308769.9A CN110954743B (en) | 2019-12-18 | 2019-12-18 | Distributed wave recording device and low-current grounding line selection method |
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CN201911308769.9A CN110954743B (en) | 2019-12-18 | 2019-12-18 | Distributed wave recording device and low-current grounding line selection method |
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CN110954743A CN110954743A (en) | 2020-04-03 |
CN110954743B true CN110954743B (en) | 2020-09-25 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112485715B (en) * | 2020-11-30 | 2022-09-27 | 云南电网有限责任公司电力科学研究院 | Reliable line selection method and device based on current zero-rest transient characteristics |
CN112485713B (en) * | 2020-11-30 | 2022-08-16 | 云南电网有限责任公司电力科学研究院 | Line selection device and method based on zero-break characteristic of ground fault current |
CN112485716B (en) * | 2020-11-30 | 2023-01-20 | 云南电网有限责任公司电力科学研究院 | Line selection method based on zero-rest transient characteristic signal of ground fault arc current |
CN112485714B (en) * | 2020-11-30 | 2022-08-19 | 云南电网有限责任公司电力科学研究院 | High-sensitivity ground fault detection and identification method and device |
CN112964967B (en) * | 2021-03-19 | 2023-02-07 | 云南电网有限责任公司昆明供电局 | Line selection method for single-phase earth fault line of power distribution network switching power supply |
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CN1605878A (en) * | 2004-11-17 | 2005-04-13 | 天津大学 | Feeder line singlephase fault and multiphase fault distance measuring method based on wavelet decomposition frequency band feature |
CN101478149A (en) * | 2009-01-16 | 2009-07-08 | 西安交通大学 | Wire selection method for power distribution network single phase earthing failure based on transient signal |
CN104823063A (en) * | 2012-11-30 | 2015-08-05 | 罗森伯格高频技术有限及两合公司 | Method for locating defective points in HF signal transmission path |
CN204287384U (en) * | 2014-12-11 | 2015-04-22 | 国家电网公司 | A kind of microcomputer type small current earthing wire-selecting control device |
WO2016171831A1 (en) * | 2015-04-24 | 2016-10-27 | Qualcomm Incorporated | Device specific thermal mitigation |
CN105044556A (en) * | 2015-07-06 | 2015-11-11 | 河南理工大学 | Atom sparse evidence fusion-based adaptive fault line selection method of small current grounding faults |
CN105259471A (en) * | 2015-10-14 | 2016-01-20 | 上海电力学院 | Three-dimensional fault line selection method based on random resonance and transient current signal |
CN105911414A (en) * | 2016-04-27 | 2016-08-31 | 福州大学 | Fuzzy theory based power distribution network multi-criteria integrated fault line selection method |
CN106990320A (en) * | 2017-02-24 | 2017-07-28 | 新疆电力建设调试所 | A kind of microgrid, micro-grid system and microgrid Fault Locating Method |
CN107144762A (en) * | 2017-04-20 | 2017-09-08 | 广西电网有限责任公司电力科学研究院 | A kind of distribution net work earthing fault localization method based on Small Electric Current Earthing And Routing Device |
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