GB617794A - Improved means for indicating fault locations on electric transmission lines - Google Patents

Improved means for indicating fault locations on electric transmission lines

Info

Publication number
GB617794A
GB617794A GB2583246A GB2583246A GB617794A GB 617794 A GB617794 A GB 617794A GB 2583246 A GB2583246 A GB 2583246A GB 2583246 A GB2583246 A GB 2583246A GB 617794 A GB617794 A GB 617794A
Authority
GB
United Kingdom
Prior art keywords
line
impedance
minimum
frequency
oscillator
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
Application number
GB2583246A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB2583246A priority Critical patent/GB617794A/en
Publication of GB617794A publication Critical patent/GB617794A/en
Expired legal-status Critical Current

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
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • G01R27/32—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • 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

Abstract

617,794. Locating faults; impedance measurements. BRITISH THOMSONHOUSTON CO., Ltd., and BAKER, W. S. GRAFF-. Aug. 28, 1946, No. 25832. [Class 371 A fault in a transmission line 1, 2 is located by feeding into the line oscillations of variable frequency constant amplitude from an oscillator 4 and indicating the impedance of the line, the frequency at which the impedance is a maximum or minimum indicating the length of the line in quarter-wavelengths to the open- or short-circuit. Preferably the impedance is indicated on a cathode-ray tube 7, the Y-plates being fed from a transformer 10 in the line, and the X-plates being fed from a time base 8 which controls the frequency of oscillator 4 so that the cathode-ray trace has a maximum or minimum at the frequency corresponding to the length of the fault. The oscillator 4 is adjusted to have a minimum value corresponding to a wavelength of four times the length of the line, and a maximum value corresponding to a wavelength equal to four times the minimum distance along the line under which a fault can be visually detected.
GB2583246A 1946-08-28 1946-08-28 Improved means for indicating fault locations on electric transmission lines Expired GB617794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2583246A GB617794A (en) 1946-08-28 1946-08-28 Improved means for indicating fault locations on electric transmission lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2583246A GB617794A (en) 1946-08-28 1946-08-28 Improved means for indicating fault locations on electric transmission lines

Publications (1)

Publication Number Publication Date
GB617794A true GB617794A (en) 1949-02-11

Family

ID=10234065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2583246A Expired GB617794A (en) 1946-08-28 1946-08-28 Improved means for indicating fault locations on electric transmission lines

Country Status (1)

Country Link
GB (1) GB617794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113839479A (en) * 2021-11-15 2021-12-24 江苏远东电机制造有限公司 Wound auxiliary winding and fault-tolerant energy supply generator stator structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113839479A (en) * 2021-11-15 2021-12-24 江苏远东电机制造有限公司 Wound auxiliary winding and fault-tolerant energy supply generator stator structure
CN113839479B (en) * 2021-11-15 2022-08-09 江苏远东电机制造有限公司 Wound auxiliary winding and fault-tolerant energy supply generator stator structure

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