CN102540020A - Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology - Google Patents
Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology Download PDFInfo
- Publication number
- CN102540020A CN102540020A CN2012100462887A CN201210046288A CN102540020A CN 102540020 A CN102540020 A CN 102540020A CN 2012100462887 A CN2012100462887 A CN 2012100462887A CN 201210046288 A CN201210046288 A CN 201210046288A CN 102540020 A CN102540020 A CN 102540020A
- Authority
- CN
- China
- Prior art keywords
- wave
- traveling wave
- wave speed
- monitoring
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Locating Faults (AREA)
Abstract
The invention provides a method for improving the fault positioning precision of a power transmission line by adopting an online wave speed measurement technology. According to the method, monitoring devices of two adjacent monitoring points on the line are used for monitoring fault traveling waves, so that the time difference of the same traveling wave reaching the two monitoring points is obtained, and the traveling wave speed is calculated, thus the online measurement of the traveling wave speed is realized. According to the method, the fault traveling wave speed is measured in an online manner, so that the actual wave speed of the traveling wave is obtained, and the wave speed error is reduced, thus an error caused by fault positioning is reduced, and the fault positioning precision is improved. The method has the advantages of simplicity, and easiness for implementation.
Description
Technical field
The present invention relates to the method for a kind of transmission line malfunction location, especially relate to a kind of method that adopts the velocity of wave line Measurement Technique to improve the transmission line malfunction bearing accuracy.
Background technology
Transmission line of electricity has a very wide distribution, and it is with a varied topography to pass through the area, and weather conditions are changeable, cause the generation of fault easily.After transmission line of electricity breaks down, realize localization of fault fast and accurately, can reduce the time of line walking investigation trouble spot, alleviate operation maintenance personnel's workload, shorten failure recovery time, thereby reduce the economic loss that power off time caused.
At present, oneself has the document of a large amount of discussion transmission line malfunctions location to deliver both at home and abroad, and oneself drops into on-the-spot operation some fault location device.But in practical application owing to receive the influence of line-sag, factors such as row wave attenuation and velocity of wave error; Make the precision of localization of fault be still waiting further raising; Error 1 microsecond such as single-ended wave head will cause 300 meters positioning error, and row wavelength distance when transmission, wave form distortion makes wave head be difficult to accurate affirmation; The affirmation error of wave head is often in several microseconds, and then positioning error can be more than 1 kilometer; Fault traveling wave generally can change in the scope of 0.936-0.987c (c is the light velocity) in addition, and the velocity of wave error is 0.05c when supposing range finding, and the time difference that the row ripple is delivered to two ends is 100 microseconds, then can cause about 1500 meters error or the like.
When carrying out the transmission line malfunction location, fixing value of wave speed is set usually, and actual velocity of wave often changed in the past, therefore caused the velocity of wave error, influenced the localization of fault precision.
Summary of the invention
Technical matters to be solved by this invention just provides a kind of method that adopts the velocity of wave line Measurement Technique to improve the transmission line malfunction bearing accuracy.
For solving the problems of the technologies described above; Employing row wave-wave speed line Measurement Technique of the present invention improves the method for transmission line malfunction bearing accuracy; Said method is come on-line monitoring fault traveling wave signal through the monitoring device of two adjacent monitoring points on the circuit; Obtain the mistiming that same travelling wave signal arrives two monitoring points, calculate row wave-wave speed, thereby realize localization of fault.
Concrete steps comprise:
S1 is provided with two spacing L less than 30 meters monitoring point 1 and 2, on-line monitoring fault traveling wave signal on transmission line of electricity;
S2 calculates row wave-wave speed according to the mistiming of two monitoring points of same fault traveling wave signal arrival;
If the fault traveling wave signal arrives the time of monitoring point 1 and 2 and is respectively t1 and t2, judge that monitoring point 1 and 2 monitors the direction of same fault traveling wave signal, when sense is opposite, the opposite in sign of t1 and t2; When sense was identical, t1 was identical with the symbol of t2, mistiming △ t=|t1-t2| then, and the distance of two monitoring points is L, then the fault traveling wave velocity of wave that obtains of on-line measurement
v=L/△t；
S3 then the trouble spot apart from the distance=t1*v of monitoring point 1.
Monitoring device through two adjacent monitoring points 1 on the circuit and 2 comes on-line monitoring fault traveling wave signal, and the distance between two monitoring points should be suitable, makes the row ripple that bigger decay not take place.
Beneficial effect: this method is come on-line monitoring fault traveling wave signal through the monitoring device of two adjacent monitoring points on the circuit; Obtain the mistiming that same travelling wave signal arrives two monitoring points; And it is fast to calculate the actual velocity of wave of capable ripple with this; Reduce the velocity of wave error, reduced the error that localization of fault is brought, improved the precision of localization of fault.The process of measuring from online velocity of wave in addition, the advantage that this method has simply, is easy to realize.
Description of drawings
Accompanying drawing is that the present invention adopts capable wave-wave speed line Measurement Technique to improve the synoptic diagram of the method for transmission line malfunction bearing accuracy.
Embodiment
See also accompanying drawing, accompanying drawing is that the present invention adopts capable wave-wave speed line Measurement Technique to improve the method synoptic diagram of transmission line malfunction bearing accuracy.
The method that adopts row wave-wave speed line Measurement Technique to improve the transmission line malfunction bearing accuracy may further comprise the steps:
S1 is provided with two spacing L less than 30 meters monitoring point 1 and 2, on-line monitoring fault traveling wave signal on transmission line of electricity;
S2 calculates row wave-wave speed according to the mistiming of two monitoring points of same fault traveling wave signal arrival;
If the fault traveling wave signal arrives the time of monitoring point 1 and 2 and is respectively t1 and t2, judge that monitoring point 1 and 2 monitors the direction of same fault traveling wave signal, when sense is opposite, the opposite in sign of t1 and t2; When sense was identical, t1 was identical with the symbol of t2, mistiming △ t=|t1-t2| then, and the distance of two monitoring points is L, then the fault traveling wave velocity of wave that obtains of on-line measurement
v=L/△t；
S3 then the trouble spot apart from the distance=t1*v of monitoring point 1.
Claims (1)
1. adopt the velocity of wave line Measurement Technique to improve the method for transmission line malfunction bearing accuracy, it is characterized in that comprising the steps:
S1 is provided with two spacing L less than 30 meters monitoring point 1 and 2, on-line monitoring fault traveling wave signal on transmission line of electricity;
S2 calculates row wave-wave speed according to the mistiming of two monitoring points of same fault traveling wave signal arrival;
If the fault traveling wave signal arrives the time of monitoring point 1 and 2 and is respectively t1 and t2, judge that monitoring point 1 and 2 monitors the direction of same fault traveling wave signal, when sense is opposite, the opposite in sign of t1 and t2; When sense was identical, t1 was identical with the symbol of t2, mistiming △ t=|t1-t2| then, and the distance of two monitoring points is L, then the fault traveling wave velocity of wave that obtains of on-line measurement
v=L/△t；
S3 then the trouble spot apart from the distance=t1*v of monitoring point 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100462887A CN102540020A (en) | 2012-02-28 | 2012-02-28 | Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100462887A CN102540020A (en) | 2012-02-28 | 2012-02-28 | Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102540020A true CN102540020A (en) | 2012-07-04 |
Family
ID=46347383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100462887A Pending CN102540020A (en) | 2012-02-28 | 2012-02-28 | Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102540020A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798804A (en) * | 2012-08-20 | 2012-11-28 | 广州供电局有限公司 | High-voltage power cable fault on-line positioning device |
| CN102809715A (en) * | 2012-08-20 | 2012-12-05 | 广州供电局有限公司 | On-line fault location device for high-voltage power cable |
| CN102818971A (en) * | 2012-08-20 | 2012-12-12 | 广州供电局有限公司 | High-voltage electric power cable fault on-line positioning device |
| CN103095527A (en) * | 2013-01-05 | 2013-05-08 | 奇点新源国际技术开发(北京)有限公司 | Method and system for measuring signal transmission time |
| CN104749490A (en) * | 2015-04-14 | 2015-07-01 | 国家电网公司 | Intelligent fault monitoring terminal and monitoring method thereof |
| CN105807182A (en) * | 2016-03-11 | 2016-07-27 | 国网山西省电力公司运城供电公司 | Double-end traveling wave fault positioning method of power transmission line |
| CN105807183A (en) * | 2016-03-11 | 2016-07-27 | 国网山西省电力公司运城供电公司 | Power transmission line fault positioning method based on non-contact sensor |
| CN109991520A (en) * | 2019-03-19 | 2019-07-09 | 中国电力科学研究院有限公司 | A kind of cable oscillation wave partial discharge detecting system velocity of wave New calculating method |
| CN110018399A (en) * | 2019-05-15 | 2019-07-16 | 武汉康普常青软件技术股份有限公司 | A kind of lightning fault localization method based on optical signal polarization state in transmission line of electricity OPGW |
| CN111044848A (en) * | 2019-12-31 | 2020-04-21 | 武汉三相电力科技有限公司 | Cable fault high-precision positioning method based on characteristic parameter adjustment wave speed |
| CN111596226A (en) * | 2020-07-06 | 2020-08-28 | 云南电网有限责任公司怒江供电局 | Power distribution network ground fault positioning method and system |
| CN115774229A (en) * | 2022-11-23 | 2023-03-10 | 深圳供电局有限公司 | Fault transient voltage traveling wave speed online verification method and system |
| CN117929930A (en) * | 2024-03-25 | 2024-04-26 | 智联新能电力科技有限公司 | Method for improving fault positioning accuracy of medium-voltage distribution network overhead line based on traveling wave method |
| CN117929930B (en) * | 2024-03-25 | 2024-07-09 | 智联新能电力科技有限公司 | Method for improving fault positioning accuracy of medium-voltage distribution network overhead line based on traveling wave method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588101A (en) * | 2004-09-30 | 2005-03-02 | 杨军 | Accurately positioning method and device for underground layered power cable defect position |
| CN101231323A (en) * | 2008-01-31 | 2008-07-30 | 钱冠军 | Distributed high-precision transmission line travelling wave positioning system |
| CN101776725A (en) * | 2010-01-13 | 2010-07-14 | 上海交通大学 | Fault positioning method for transmission line |
-
2012
- 2012-02-28 CN CN2012100462887A patent/CN102540020A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588101A (en) * | 2004-09-30 | 2005-03-02 | 杨军 | Accurately positioning method and device for underground layered power cable defect position |
| CN101231323A (en) * | 2008-01-31 | 2008-07-30 | 钱冠军 | Distributed high-precision transmission line travelling wave positioning system |
| CN101776725A (en) * | 2010-01-13 | 2010-07-14 | 上海交通大学 | Fault positioning method for transmission line |
Non-Patent Citations (1)
| Title |
|---|
| 王晓萍: "基于行波波速在线测量的输电线路故障测距算法研究", 《昆明理工大学学报（理工版）》 * |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798804A (en) * | 2012-08-20 | 2012-11-28 | 广州供电局有限公司 | High-voltage power cable fault on-line positioning device |
| CN102809715A (en) * | 2012-08-20 | 2012-12-05 | 广州供电局有限公司 | On-line fault location device for high-voltage power cable |
| CN102818971A (en) * | 2012-08-20 | 2012-12-12 | 广州供电局有限公司 | High-voltage electric power cable fault on-line positioning device |
| CN102809715B (en) * | 2012-08-20 | 2014-12-10 | 广州供电局有限公司 | On-line fault location device for high-voltage power cable |
| CN102818971B (en) * | 2012-08-20 | 2015-05-13 | 广州供电局有限公司 | High-voltage electric power cable fault on-line positioning device |
| CN102798804B (en) * | 2012-08-20 | 2015-05-13 | 广州供电局有限公司 | High-voltage power cable fault on-line positioning device |
| CN103095527A (en) * | 2013-01-05 | 2013-05-08 | 奇点新源国际技术开发(北京)有限公司 | Method and system for measuring signal transmission time |
| CN104749490A (en) * | 2015-04-14 | 2015-07-01 | 国家电网公司 | Intelligent fault monitoring terminal and monitoring method thereof |
| CN105807182B (en) * | 2016-03-11 | 2019-04-30 | 国网山西省电力公司运城供电公司 | A kind of both-end traveling wave fault positioning method of transmission line of electricity |
| CN105807183A (en) * | 2016-03-11 | 2016-07-27 | 国网山西省电力公司运城供电公司 | Power transmission line fault positioning method based on non-contact sensor |
| CN105807182A (en) * | 2016-03-11 | 2016-07-27 | 国网山西省电力公司运城供电公司 | Double-end traveling wave fault positioning method of power transmission line |
| CN105807183B (en) * | 2016-03-11 | 2019-04-30 | 国网山西省电力公司运城供电公司 | A kind of power transmission line fault locating method based on noncontacting proximity sensor |
| CN109991520A (en) * | 2019-03-19 | 2019-07-09 | 中国电力科学研究院有限公司 | A kind of cable oscillation wave partial discharge detecting system velocity of wave New calculating method |
| CN110018399A (en) * | 2019-05-15 | 2019-07-16 | 武汉康普常青软件技术股份有限公司 | A kind of lightning fault localization method based on optical signal polarization state in transmission line of electricity OPGW |
| CN111044848A (en) * | 2019-12-31 | 2020-04-21 | 武汉三相电力科技有限公司 | Cable fault high-precision positioning method based on characteristic parameter adjustment wave speed |
| CN111044848B (en) * | 2019-12-31 | 2022-04-05 | 武汉三相电力科技有限公司 | Cable fault high-precision positioning method based on characteristic parameter adjustment wave speed |
| CN111596226A (en) * | 2020-07-06 | 2020-08-28 | 云南电网有限责任公司怒江供电局 | Power distribution network ground fault positioning method and system |
| CN115774229A (en) * | 2022-11-23 | 2023-03-10 | 深圳供电局有限公司 | Fault transient voltage traveling wave speed online verification method and system |
| CN115774229B (en) * | 2022-11-23 | 2023-12-12 | 深圳供电局有限公司 | Fault transient voltage traveling wave speed online verification method and system |
| CN117929930A (en) * | 2024-03-25 | 2024-04-26 | 智联新能电力科技有限公司 | Method for improving fault positioning accuracy of medium-voltage distribution network overhead line based on traveling wave method |
| CN117929930B (en) * | 2024-03-25 | 2024-07-09 | 智联新能电力科技有限公司 | Method for improving fault positioning accuracy of medium-voltage distribution network overhead line based on traveling wave method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102540020A (en) | Method for improving fault positioning precision of power transmission line by adopting online wave speed measurement technology | |
| CN106959401B (en) | A kind of distribution travelling wave ranging method | |
| CN103823155A (en) | AT traction network short circuit fault distance measurement method | |
| CN103983901A (en) | Online failure positioning method for ring main unit cable line | |
| CN104343466A (en) | All-fiber coal mine safety monitoring system | |
| CN102830328A (en) | Distributed fault location method for T-circuit | |
| CN102128653A (en) | Distributed optical fiber flow measuring device and method | |
| CN104297638A (en) | Power distribution grid fault positioning method with high precision and low cost | |
| CN102565631A (en) | Method for positioning fault region of inter-regional transmission line based on distribution type monitoring | |
| CN103383428A (en) | Overhead line and cable mixed line double-end traveling wave fault location method | |
| CN104749395A (en) | Wind speed measuring probe, wind speed measuring system and wind speed measuring method | |
| CN104535039A (en) | Crane beam track eccentricity measurement device and method | |
| CN107014528B (en) | Wheel-rail force online monitoring system, monitoring method and static calibration method | |
| CN103615981A (en) | Bridge displacement and expansion joint width remote-measuring system based on internet of things and lasers | |
| CN205003171U (en) | Aerogenerator anemometer | |
| CN204142295U (en) | From block-resistant type Multipoint Uniform uniform cross section differential pressure air quantity flow apparatus | |
| CN206270365U (en) | A kind of Real time auto measure device of train speed and position measurement velocity sensor | |
| CN205898200U (en) | Bridge comprehensive monitoring system based on zigbee module | |
| CN204027526U (en) | A kind of photovoltaic material flexibility tester | |
| CN204128476U (en) | A kind of angle detection device for auto parts machinery | |
| CN203455938U (en) | Split wireless communication flowmeter | |
| CN207365917U (en) | A kind of power transmission tower system for monitoring transmission lines oscillation | |
| CN108761273A (en) | A kind of traveling wave fault positioning method not influenced by velocity of wave | |
| CN205081789U (en) | A OTDR device for communicating by letter optical cable fault point accurate positioning | |
| CN209692789U (en) | A kind of high-speed railway touching net monitoring safety status device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |