GB1390016A - Method of fault location on electric transmission and distribution systems - Google Patents
Method of fault location on electric transmission and distribution systemsInfo
- Publication number
- GB1390016A GB1390016A GB1390171A GB1390171A GB1390016A GB 1390016 A GB1390016 A GB 1390016A GB 1390171 A GB1390171 A GB 1390171A GB 1390171 A GB1390171 A GB 1390171A GB 1390016 A GB1390016 A GB 1390016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- test signal
- frequency
- fault
- receiver
- aerial
- 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.)
- Expired
Links
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
1390016 Locating faults in power supply systems A REFSUM and D O LAVELLE 8 May 1972 [8 May 1971] 13901/71 Heading G1U Faults in an electricity supply system are located by injecting a test signal into the system and moving an aerial along a path adjacent to the line conductors so that the extent to which the test signal has propagated within the system may be detected by the use of a narrow band radio receiver tuned to the test signal frequency. In the preferred embodiment the test signal, which is generated by frequency doubling the power supply frequency using either a magnetic amplifier Fig. 4 (not shown) or a full-wave bridge rectifier Fig. 5 (not shown), is injected into the supply lines a, b, c, Fig. 1, via the supply transformer T and a tuned circuit 1 Fig. 6, (not shown). If a fault to earth, such as Z, occurs then the test signal will not progress beyond that point so that by tracing the test signal with an aerial and a selective receiver the fault can be located. A circuit for an appropriate receiver using a phase-locked loop is outlined Fig. 6, (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1390171A GB1390016A (en) | 1971-05-08 | 1971-05-08 | Method of fault location on electric transmission and distribution systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1390171A GB1390016A (en) | 1971-05-08 | 1971-05-08 | Method of fault location on electric transmission and distribution systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1390016A true GB1390016A (en) | 1975-04-09 |
Family
ID=10031430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1390171A Expired GB1390016A (en) | 1971-05-08 | 1971-05-08 | Method of fault location on electric transmission and distribution systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1390016A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151460A (en) * | 1977-09-30 | 1979-04-24 | Westinghouse Electric Corp. | High resistance ground fault detector and locator for polyphase electrical systems |
| GB2124391A (en) * | 1982-07-22 | 1984-02-15 | David J Haviland | Electricity supply fault detection |
| CN103698661A (en) * | 2014-01-10 | 2014-04-02 | 周云侠 | Cable breakage detection device |
| CN106556774A (en) * | 2015-09-25 | 2017-04-05 | 浙江科畅电子有限公司 | Overhead transmission line grounding fault searching instrument |
| CN113125899A (en) * | 2021-03-05 | 2021-07-16 | 国网江苏省电力有限公司盐城供电分公司 | Single-phase earth fault tuning method based on secondary signal injection |
-
1971
- 1971-05-08 GB GB1390171A patent/GB1390016A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151460A (en) * | 1977-09-30 | 1979-04-24 | Westinghouse Electric Corp. | High resistance ground fault detector and locator for polyphase electrical systems |
| GB2124391A (en) * | 1982-07-22 | 1984-02-15 | David J Haviland | Electricity supply fault detection |
| CN103698661A (en) * | 2014-01-10 | 2014-04-02 | 周云侠 | Cable breakage detection device |
| CN106556774A (en) * | 2015-09-25 | 2017-04-05 | 浙江科畅电子有限公司 | Overhead transmission line grounding fault searching instrument |
| CN113125899A (en) * | 2021-03-05 | 2021-07-16 | 国网江苏省电力有限公司盐城供电分公司 | Single-phase earth fault tuning method based on secondary signal injection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2962708D1 (en) | Apparatus and method for locating sheath faults in underground power supply cables | |
| GB1119151A (en) | A method and apparatus for locating non-conductors, particularly dielectrics | |
| GB1390016A (en) | Method of fault location on electric transmission and distribution systems | |
| JPS51138369A (en) | Mode exciter device for dielectric waveguide system | |
| GB1488847A (en) | Detection and location of conductors carrying time varying currents | |
| GB792529A (en) | Device for testing unattended amplifiers to which power is supplied from a distance over the transmission line | |
| GB844050A (en) | Improvements in or relating to devices for recording and/or reproducing high-frequency signals, more particularly television signals | |
| GB1491286A (en) | Monitoring radiating cable systems | |
| FR2333256A1 (en) | Underground cable fault location aerial frame - has selectively connected parallel and coaxial phase antenna pairs | |
| GB1145679A (en) | Electrical apparatus | |
| JPS51126492A (en) | Information transmitting method | |
| GB1365381A (en) | Methods for a determining the electrical resistivity of the subsoil and for apparatus therefor | |
| GB851917A (en) | Method for carrying out underground telephonic conversations, remote controls or telemeterings, and apparatus therefor | |
| JPS5226109A (en) | Signal transmission equipment | |
| JPS5228210A (en) | Loop data transmission system | |
| JPS5313830A (en) | Program rating measurement system for television broadcast | |
| JPS5341744A (en) | Anomalousness detector for transmission signal | |
| GB1064592A (en) | Method to localise faults in carrier frequency systems | |
| JPS51135622A (en) | Multiple head electronic switchover circuit | |
| Builder et al. | Modulation-frequency-change technique for ionospheric measurements | |
| ES254978A1 (en) | A method and apparatus for magnetic recording on tape (Machine-translation by Google Translate, not legally binding) | |
| GB937574A (en) | Improvements in or relating to remote control systems | |
| JPS52121191A (en) | Circuit discontinuity detection | |
| GB1006346A (en) | Microwave signal generator | |
| Shepherd | A report on interference caused by intermodulation products generated in or near land mobile transmitters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |