KR20000040154A - Method for removing an ac offset of a transmission line - Google Patents

Method for removing an ac offset of a transmission line Download PDF

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Publication number
KR20000040154A
KR20000040154A KR1019980055706A KR19980055706A KR20000040154A KR 20000040154 A KR20000040154 A KR 20000040154A KR 1019980055706 A KR1019980055706 A KR 1019980055706A KR 19980055706 A KR19980055706 A KR 19980055706A KR 20000040154 A KR20000040154 A KR 20000040154A
Authority
KR
South Korea
Prior art keywords
current
offset
transmission line
harmonic wave
breakdown signal
Prior art date
Application number
KR1019980055706A
Other languages
Korean (ko)
Inventor
Jae Gyu Lee
Original Assignee
Lg Ind Systems 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 Lg Ind Systems Co Ltd filed Critical Lg Ind Systems Co Ltd
Priority to KR1019980055706A priority Critical patent/KR20000040154A/en
Publication of KR20000040154A publication Critical patent/KR20000040154A/en

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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
    • H02H3/08—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 excess current
    • H02H3/087—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 excess current for dc applications

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: A method for removing an AC offset of a transmission line is provided to perfectively remove the magnitude and the phase of a basic wave by removing an AC current from the breakdown signal to leave a harmonic wave only. CONSTITUTION: In a breakdown signal which comprises an AC current and a harmonic wave, the harmonic wave is gradually removed to leave the AC current only. The initial value(A) and the damping ratio(X) are calculated from the AC current. The AC offset component which is calculated from the initial value(A) and the damping rate(X) is removed in the breakdown signal.
KR1019980055706A 1998-12-17 1998-12-17 Method for removing an ac offset of a transmission line KR20000040154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980055706A KR20000040154A (en) 1998-12-17 1998-12-17 Method for removing an ac offset of a transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980055706A KR20000040154A (en) 1998-12-17 1998-12-17 Method for removing an ac offset of a transmission line

Publications (1)

Publication Number Publication Date
KR20000040154A true KR20000040154A (en) 2000-07-05

Family

ID=19563384

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980055706A KR20000040154A (en) 1998-12-17 1998-12-17 Method for removing an ac offset of a transmission line

Country Status (1)

Country Link
KR (1) KR20000040154A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100899631B1 (en) * 2007-04-24 2009-05-27 엘에스산전 주식회사 Apparatus for removing direct current component of fault current and method thereof
KR101463045B1 (en) * 2013-06-27 2014-11-18 엘에스산전 주식회사 Method for Removing DC component of fault current
KR101529751B1 (en) * 2011-09-09 2015-06-19 엘에스산전 주식회사 Method for measuring direct current and measurement device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100899631B1 (en) * 2007-04-24 2009-05-27 엘에스산전 주식회사 Apparatus for removing direct current component of fault current and method thereof
KR101529751B1 (en) * 2011-09-09 2015-06-19 엘에스산전 주식회사 Method for measuring direct current and measurement device
KR101463045B1 (en) * 2013-06-27 2014-11-18 엘에스산전 주식회사 Method for Removing DC component of fault current

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Legal Events

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A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application