SE8100748L - SET AND APPARATUS FOR SEATING AND INDICATING THE DISTANCE TO AN INCREASED SHORT CIRCUIT OR SIMILAR LINE ERROR ON AN AC POWER LINE - Google Patents

SET AND APPARATUS FOR SEATING AND INDICATING THE DISTANCE TO AN INCREASED SHORT CIRCUIT OR SIMILAR LINE ERROR ON AN AC POWER LINE

Info

Publication number
SE8100748L
SE8100748L SE8100748A SE8100748A SE8100748L SE 8100748 L SE8100748 L SE 8100748L SE 8100748 A SE8100748 A SE 8100748A SE 8100748 A SE8100748 A SE 8100748A SE 8100748 L SE8100748 L SE 8100748L
Authority
SE
Sweden
Prior art keywords
line
impedance
limiting
relay
fault
Prior art date
Application number
SE8100748A
Other languages
Swedish (sv)
Other versions
SE426104B (en
Inventor
H Hoel
Original Assignee
Aktuell As
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 Aktuell As filed Critical Aktuell As
Publication of SE8100748L publication Critical patent/SE8100748L/en
Publication of SE426104B publication Critical patent/SE426104B/en

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
    • G01R31/081—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Locating Faults (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

This method and apparatus is primarily intended for use in combination with a distance relay adapted to actuate a line switch or breaker (B) when sensing a line fault on the line, the short time interval available within the tripping time of the line breaker before disconnecting the line being utilized for performing measurements to locate the occured fault. These measurements are performed by means of an impedance relay (XR, R) disposed to receive two measuring signals (E, dI/dt) derived from sensed line voltage and current, respectively, and to respond to these signals when their mutual proportion corresponds to a line impedance which is less than a limiting impedance of the relay. During the time interval available for measurements this limiting impedance is reset by time controlled switching means (K) to a different value for each half cycle or other suitable given time period subsequent to the detected short circuit. Each such different reset limiting impedance value corresponds to a predetermined portion of the line length, and the sequence of limiting impedances is set in accordance with a predetermined switching programme (Fig. 1), which may be optimised to obtain maximum information as to the line fault location during the time span available before the power line is disconnected. During said switching programme a detector unit (A1-A4, B1-B4, a, b, c, d) registers consequently whether the respective set limiting impedances allow or do not allow the impedance relay (XR, R) to respond to the received measuring signals. Based on the information thus obtained by the detector, the location of the line fault is displayed on a distance indicator.
SE8100748A 1979-05-31 1981-01-30 Apparatus for saturation and indication of the distance to an occurring short circuit or similar line fault on an AC power line SE426104B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO791815A NO144612C (en) 1979-05-31 1979-05-31 APPARATUS FOR AA MEASUREMENT AND INDICATE THE DISTANCE TO AN INCIDENTAL SHORT CIRCUIT OR SIMILAR LINE ERROR ON AN AC POWER LINE

Publications (2)

Publication Number Publication Date
SE8100748L true SE8100748L (en) 1981-01-30
SE426104B SE426104B (en) 1982-12-06

Family

ID=19884890

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8100748A SE426104B (en) 1979-05-31 1981-01-30 Apparatus for saturation and indication of the distance to an occurring short circuit or similar line fault on an AC power line

Country Status (5)

Country Link
EP (1) EP0029439A1 (en)
FI (1) FI801723A (en)
NO (1) NO144612C (en)
SE (1) SE426104B (en)
WO (1) WO1980002748A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605025C2 (en) * 1996-01-31 2003-06-18 Siemens Ag Distance protection method
GB9916383D0 (en) * 1999-07-14 1999-09-15 Equipmake Ltd Power line isolation system
RU2615150C1 (en) * 2016-02-16 2017-04-04 Степан Георгиевич Тигунцев Method of determining the short circuit spot on multi-chain with earth-wires, grounded at anchor supports, three-phase electric transmission air-line with distributed parameters
CN113109671B (en) * 2021-04-30 2022-07-19 武汉大学 Method for accelerating detection of small half-wave stage of fault current

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112136C3 (en) * 1971-03-10 1986-02-13 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for precise measurement of the fault location in the event of line short circuits
FR2160306B1 (en) * 1971-11-19 1974-05-10 Schlumberger Compteurs

Also Published As

Publication number Publication date
NO791815L (en) 1980-12-02
FI801723A (en) 1980-12-01
NO144612B (en) 1981-06-22
EP0029439A1 (en) 1981-06-03
NO144612C (en) 1981-09-30
SE426104B (en) 1982-12-06
WO1980002748A1 (en) 1980-12-11

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