WO1998009177A1 - Method of measurement for locating line faults on hvdc lines - Google Patents
Method of measurement for locating line faults on hvdc lines Download PDFInfo
- Publication number
- WO1998009177A1 WO1998009177A1 PCT/SE1997/001323 SE9701323W WO9809177A1 WO 1998009177 A1 WO1998009177 A1 WO 1998009177A1 SE 9701323 W SE9701323 W SE 9701323W WO 9809177 A1 WO9809177 A1 WO 9809177A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fault
- measurement
- stations
- current
- lines
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 title claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011157 data evaluation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- 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
Definitions
- LFL line fault locators
- the fault-distance determination may also be performed by measuring the travelling wave, or waves reflected by the travelling wave, at one of the stations only. To be able to determine the fault distance, however, this method requires determination of both the current and the voltage which are associated with the travelling wave.
- references and methods mentioned above relate to fault- distance determination on ac lines, where, for measurement of the current and the voltage which are associated with these waves, current and voltage transformers are used.
- the above-mentioned invention deals with determination of travelling waves on HVDC lines and relates to a method wherein the difference in time is determined between the point where travelling waves from a fault reach the end stations of the line. It is thus assumed that the time determination takes place with synchronous clocks and communication between the two stations. According to the above, this measuring and determination principle means that only that voltage or that current which is associated with the travelling wave is needed for the fault-distance determination .
- a converter station 1 feeds an HVDC line 2 on which a fault has occurred at F.
- a capacitor 3 is connected between the HVDC line and ground.
- a current pulse transformer 4 is connected between the capacitor and ground.
- the signal S which is generated in this current pulse transformer thus corresponds to the derivative of the voltage at the travelling wave.
- HVDC In connection with HVDC, it may occur that the power transmission takes place via two or more parallel-connected HVDC lines, exemplified as 2a and 2b in Figure 2. If the same measuring principle as shown in Figure 1 should be used also for parallel-connected two- or multi-line transmissions, the measurement would not function owing to the fact that the voltage and the voltage derivative, respectively, of the travelling waves would cancel each other across the capacitor since the voltage wave, via capacitive coupling between the lines, will be transmitted on the other line, although with reverse polarity. To obtain an adequate measure of the travelling wave, according to the invention the current which is associated with the travelling wave is instead determined. Also the current will be transmitted via inductive coupling to the other line, but these two will concur at the points of connection.
- the current measurement may be performed in different ways, for example according to the method described above via a shunt resistance, with the aid of dc instrument transformers 5 and 6, so-called DCCT, on each parallel-connected line according to Figure 2 or via a Rogowski coil. Both during current measurement via a shunt resistance and DCCT, the direct current which flows in each line will be continuously measured. To identify the current which is associated with a travelling wave, a filtering is performed such that only signals from the shunt resistance and each DCCT which are considered to originate from a travelling wave, and have a frequency above a certain preset value, are detected for further evaluation of the fault distance. In addition, it is assumed that the line fault protection devices of the lines have identified a line fault.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97935925A EP0922231A1 (en) | 1996-08-29 | 1997-08-05 | Method of measurement for locating line faults on hvdc lines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9603129-9 | 1996-08-29 | ||
SE9603129A SE507043C2 (en) | 1996-08-29 | 1996-08-29 | Measurement procedure at line error locator on HVDC lines |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998009177A1 true WO1998009177A1 (en) | 1998-03-05 |
Family
ID=20403692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1997/001323 WO1998009177A1 (en) | 1996-08-29 | 1997-08-05 | Method of measurement for locating line faults on hvdc lines |
Country Status (4)
Country | Link |
---|---|
US (1) | US5903155A (en) |
EP (1) | EP0922231A1 (en) |
SE (1) | SE507043C2 (en) |
WO (1) | WO1998009177A1 (en) |
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CN101943738A (en) * | 2010-08-04 | 2011-01-12 | 清华大学 | Single-phase grounding distance measuring method and distance measuring device |
CN101949994A (en) * | 2010-08-20 | 2011-01-19 | 昆明理工大学 | Form peak valley detection method for identifying internal and external faults of ultra high voltage direct current transmission line |
CN102097791A (en) * | 2011-02-25 | 2011-06-15 | 昆明理工大学 | Fractal dimension-based ultrahigh voltage DC transmission line boundary element method |
CN102156246A (en) * | 2011-03-24 | 2011-08-17 | 昆明理工大学 | Wavelet energy entropy detecting method for recognizing faults of ultra-high voltage direct-current transmission line |
CN105372559A (en) * | 2015-12-16 | 2016-03-02 | 昆明理工大学 | Chain type power transmission line single terminal fault location limited continuation method based on characteristic of fault traveling wave distribution along line |
CN105403812A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Triangular ring network line single-end fault distance measuring method based on fault traveling wave line decomposition and distance calibration |
CN105403813A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Aerial line single-end travelling wave distance measuring method based on direction traveling wave decomposition and distance calibration |
CN109564258A (en) * | 2016-08-17 | 2019-04-02 | 通用电器技术有限公司 | About or being located in improvement in the failure in power transmission pipeline |
CN109696603A (en) * | 2017-10-20 | 2019-04-30 | 南京南瑞继保电气有限公司 | A kind of two sides external clock method of real-time of both-end travelling wave ranging |
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US6822457B2 (en) * | 2003-03-27 | 2004-11-23 | Marshall B. Borchert | Method of precisely determining the location of a fault on an electrical transmission system |
KR100645167B1 (en) * | 2004-03-12 | 2006-11-10 | 엘에스전선 주식회사 | Detecting device for overhead transmission line fault location |
US7535233B2 (en) * | 2004-07-15 | 2009-05-19 | Cooper Technologies Company | Traveling wave based relay protection |
US20070108986A1 (en) * | 2005-11-17 | 2007-05-17 | Moore Robert E | Systems and methods for performing differential measurements in an electrical system |
US7638999B2 (en) * | 2006-04-07 | 2009-12-29 | Cooper Technologies Company | Protective relay device, system and methods for Rogowski coil sensors |
US7564233B2 (en) | 2006-11-06 | 2009-07-21 | Cooper Technologies Company | Shielded Rogowski coil assembly and methods |
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US8315827B2 (en) * | 2009-02-26 | 2012-11-20 | Southern California Edison | Fault region location system |
US8289665B2 (en) | 2009-07-17 | 2012-10-16 | The Invention Science Fund I Llc | Systems and methods for grounding power line sections to clear faults |
EP2558874B1 (en) | 2010-04-13 | 2017-12-27 | ABB Schweiz AG | Fault wave arrival determination |
CN101923139B (en) * | 2010-04-19 | 2012-05-16 | 昆明理工大学 | Intelligent method for single-ended traveling wave fault location of power transmission line |
CN101825676B (en) * | 2010-04-27 | 2012-01-11 | 昆明理工大学 | Fault ranging method by utilizing red and green colors to express traveling wave of DC power transmission circuit malfunction voltage |
US9429613B1 (en) | 2012-07-02 | 2016-08-30 | Marshall B. Borchert | Time domain reflectometer |
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JP6785069B2 (en) * | 2016-06-02 | 2020-11-18 | 西日本旅客鉄道株式会社 | Feeder circuit failure point identification system for electric railways and feeder circuit failure point identification method for electric railways |
US10401412B2 (en) | 2016-12-16 | 2019-09-03 | Texas Instruments Incorporated | Line fault signature analysis |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US3609533A (en) * | 1968-12-11 | 1971-09-28 | Robert J Pardis | Fault locating system for determining distance of fault on a transmission line from a predetermined position thereon |
US3670240A (en) * | 1970-06-23 | 1972-06-13 | Vasily Makarovich Maranchak | Method for determining the distance to a fault on power transmission lines and device for its realization on d.c. lines |
EP0358488A2 (en) * | 1988-09-09 | 1990-03-14 | Gec Alsthom Limited | Equipment for and methods of locating the position of a fault on a power transmission line |
EP0649029A2 (en) * | 1993-10-19 | 1995-04-19 | Kyokuto Boeki Kaisha, Ltd. | Surge discriminating and locating system |
EP0684678A1 (en) * | 1994-04-25 | 1995-11-29 | Gec Alsthom Limited | Methods and apparatus for identifying faulted phases on an electric power transmission line |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH609180A5 (en) * | 1975-06-06 | 1979-02-15 | Bbc Brown Boveri & Cie | |
US5138265A (en) * | 1988-11-30 | 1992-08-11 | Sumitomo Electric Industries, Ltd. | Apparatus and system for locating thunderstruck point and faulty point of transmission line |
-
1996
- 1996-08-29 SE SE9603129A patent/SE507043C2/en not_active IP Right Cessation
-
1997
- 1997-08-05 WO PCT/SE1997/001323 patent/WO1998009177A1/en active Application Filing
- 1997-08-05 EP EP97935925A patent/EP0922231A1/en not_active Ceased
- 1997-08-26 US US08/917,621 patent/US5903155A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3609533A (en) * | 1968-12-11 | 1971-09-28 | Robert J Pardis | Fault locating system for determining distance of fault on a transmission line from a predetermined position thereon |
US3670240A (en) * | 1970-06-23 | 1972-06-13 | Vasily Makarovich Maranchak | Method for determining the distance to a fault on power transmission lines and device for its realization on d.c. lines |
EP0358488A2 (en) * | 1988-09-09 | 1990-03-14 | Gec Alsthom Limited | Equipment for and methods of locating the position of a fault on a power transmission line |
EP0649029A2 (en) * | 1993-10-19 | 1995-04-19 | Kyokuto Boeki Kaisha, Ltd. | Surge discriminating and locating system |
EP0684678A1 (en) * | 1994-04-25 | 1995-11-29 | Gec Alsthom Limited | Methods and apparatus for identifying faulted phases on an electric power transmission line |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101943738A (en) * | 2010-08-04 | 2011-01-12 | 清华大学 | Single-phase grounding distance measuring method and distance measuring device |
CN101949994A (en) * | 2010-08-20 | 2011-01-19 | 昆明理工大学 | Form peak valley detection method for identifying internal and external faults of ultra high voltage direct current transmission line |
CN101949994B (en) * | 2010-08-20 | 2012-05-30 | 昆明理工大学 | Form peak valley detection method for identifying internal and external faults of ultra high voltage direct current transmission line |
CN102097791A (en) * | 2011-02-25 | 2011-06-15 | 昆明理工大学 | Fractal dimension-based ultrahigh voltage DC transmission line boundary element method |
CN102156246A (en) * | 2011-03-24 | 2011-08-17 | 昆明理工大学 | Wavelet energy entropy detecting method for recognizing faults of ultra-high voltage direct-current transmission line |
CN105372559A (en) * | 2015-12-16 | 2016-03-02 | 昆明理工大学 | Chain type power transmission line single terminal fault location limited continuation method based on characteristic of fault traveling wave distribution along line |
CN105403812A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Triangular ring network line single-end fault distance measuring method based on fault traveling wave line decomposition and distance calibration |
CN105403813A (en) * | 2015-12-16 | 2016-03-16 | 昆明理工大学 | Aerial line single-end travelling wave distance measuring method based on direction traveling wave decomposition and distance calibration |
CN109564258A (en) * | 2016-08-17 | 2019-04-02 | 通用电器技术有限公司 | About or being located in improvement in the failure in power transmission pipeline |
CN109696603A (en) * | 2017-10-20 | 2019-04-30 | 南京南瑞继保电气有限公司 | A kind of two sides external clock method of real-time of both-end travelling wave ranging |
CN109696603B (en) * | 2017-10-20 | 2021-10-01 | 南京南瑞继保电气有限公司 | Real-time monitoring method for two-side external clocks of two-end traveling wave ranging |
Also Published As
Publication number | Publication date |
---|---|
US5903155A (en) | 1999-05-11 |
EP0922231A1 (en) | 1999-06-16 |
SE9603129L (en) | 1998-03-01 |
SE507043C2 (en) | 1998-03-16 |
SE9603129D0 (en) | 1996-08-29 |
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