SE7703936L - PROCEDURE AND DEVICE FOR ELECTRICAL WIRE DISTANCE SATURATION, SPECIFICALLY FOR DISTANCE PROTECTION DEVICES - Google Patents

PROCEDURE AND DEVICE FOR ELECTRICAL WIRE DISTANCE SATURATION, SPECIFICALLY FOR DISTANCE PROTECTION DEVICES

Info

Publication number
SE7703936L
SE7703936L SE7703936A SE7703936A SE7703936L SE 7703936 L SE7703936 L SE 7703936L SE 7703936 A SE7703936 A SE 7703936A SE 7703936 A SE7703936 A SE 7703936A SE 7703936 L SE7703936 L SE 7703936L
Authority
SE
Sweden
Prior art keywords
voltage
distance
image
procedure
specifically
Prior art date
Application number
SE7703936A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE413726B (en
Inventor
H Rijanto
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of SE7703936L publication Critical patent/SE7703936L/en
Publication of SE413726B publication Critical patent/SE413726B/en

Links

Classifications

    • 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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Locating Faults (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

In the method in accordance with the integrating phase comparison principle of measurement, the difference voltage (U) of a voltage (UL) derived from the line voltage and a voltage derived from the line current and called image voltage (UZ) is formed. Square wave voltages (Fig. 7a) having identical zero crossings are generated for the difference voltage (U) and for the image voltage (UZ) in square wave generators (3, 4) and the non-overlap time (TINT) between the image voltage and the difference voltage is determined in a section (6) and evaluated to decide the distance by comparison with a threshold value. To prevent wrong triggering in the case of distortion in the voltage quantities, all non-overlap times which occur during one half wave period of the image voltage are added together in an integrator (7) and the aggregate value is compared with the threshold value of the threshold section (8) releasing the distance decision. <IMAGE>
SE7703936A 1976-04-09 1977-04-04 PROCEDURE FOR FAILURE SURFACING ON ELECTRICAL CABLES AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE SE413726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762615556 DE2615556C2 (en) 1976-04-09 1976-04-09 Procedure for electrical line distance measurement for distance protection devices

Publications (2)

Publication Number Publication Date
SE7703936L true SE7703936L (en) 1977-10-10
SE413726B SE413726B (en) 1980-06-16

Family

ID=5974975

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7703936A SE413726B (en) 1976-04-09 1977-04-04 PROCEDURE FOR FAILURE SURFACING ON ELECTRICAL CABLES AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE

Country Status (4)

Country Link
AT (1) AT359149B (en)
CH (1) CH615053A5 (en)
DE (1) DE2615556C2 (en)
SE (1) SE413726B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230649C2 (en) * 1992-09-14 1996-10-31 Siemens Ag Method and device for signal correction
DE4441334C1 (en) * 1994-11-08 1996-07-11 Siemens Ag Method for determining the location of a fault in a predetermined monitoring area of a multi-phase electrical power transmission line system

Also Published As

Publication number Publication date
DE2615556C2 (en) 1979-12-13
CH615053A5 (en) 1979-12-28
SE413726B (en) 1980-06-16
DE2615556B1 (en) 1977-08-18
ATA248877A (en) 1980-03-15
AT359149B (en) 1980-10-27

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