JPS57136172A - Orientating system for trouble point - Google Patents

Orientating system for trouble point

Info

Publication number
JPS57136172A
JPS57136172A JP2242381A JP2242381A JPS57136172A JP S57136172 A JPS57136172 A JP S57136172A JP 2242381 A JP2242381 A JP 2242381A JP 2242381 A JP2242381 A JP 2242381A JP S57136172 A JPS57136172 A JP S57136172A
Authority
JP
Japan
Prior art keywords
trouble
ground fault
constant
measuring
phase
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.)
Granted
Application number
JP2242381A
Other languages
Japanese (ja)
Other versions
JPH0235952B2 (en
Inventor
Masaomi Nagae
Toshio Sakuragi
Motoshirou Kaneda
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP2242381A priority Critical patent/JPH0235952B2/en
Publication of JPS57136172A publication Critical patent/JPS57136172A/en
Publication of JPH0235952B2 publication Critical patent/JPH0235952B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Abstract

PURPOSE:To enable measuring of an electric amount related to an impedance ranging to a trouble point without being influenced by a trouble point impedance, by a method wherein two measuring constant-current generators are mounted to a ground fault trouble phase in a given transmission and distribution line section. CONSTITUTION:If a ground fault trouble occurs in a transmission and distribution line 20, ground fault phase discriminators 3a and 3b actuate to close contacts, corresponding to the ground fault trouble phase, of switches 4a and 4b, and simultaneously, to enable constant-correntsI1 andI2 to be outputted from measuring constant-current gnerators 1a and 1b. The constant-currentsI1 andI2 feed a measuring current via current transformers 5a and 6a or 5b and 6b for trouble phase as shown in an arrow mark. The constant currents are set toI1=I2 thereupon, and thereby, the measurement of a voltage E1 and a reactive power Q1 of the device 1a by means of the measuring device 2a or 2b permits the computation of a distance to a ground fault point.
JP2242381A 1981-02-18 1981-02-18 KOSHOTENHYOTEIHOSHIKI Expired - Lifetime JPH0235952B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2242381A JPH0235952B2 (en) 1981-02-18 1981-02-18 KOSHOTENHYOTEIHOSHIKI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2242381A JPH0235952B2 (en) 1981-02-18 1981-02-18 KOSHOTENHYOTEIHOSHIKI

Publications (2)

Publication Number Publication Date
JPS57136172A true JPS57136172A (en) 1982-08-23
JPH0235952B2 JPH0235952B2 (en) 1990-08-14

Family

ID=12082266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2242381A Expired - Lifetime JPH0235952B2 (en) 1981-02-18 1981-02-18 KOSHOTENHYOTEIHOSHIKI

Country Status (1)

Country Link
JP (1) JPH0235952B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59135377A (en) * 1983-01-24 1984-08-03 Fuji Electric Co Ltd Method for evaluating grounding fault point of three- phase power transmission distribution line

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03127075U (en) * 1990-04-06 1991-12-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59135377A (en) * 1983-01-24 1984-08-03 Fuji Electric Co Ltd Method for evaluating grounding fault point of three- phase power transmission distribution line
JPH0515990B2 (en) * 1983-01-24 1993-03-03 Fuji Electric Co Ltd

Also Published As

Publication number Publication date
JPH0235952B2 (en) 1990-08-14

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