KR960019891A - Fault Diagnosis Method and Device in Power Line Carrier Protection Relay System - Google Patents

Fault Diagnosis Method and Device in Power Line Carrier Protection Relay System Download PDF

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Publication number
KR960019891A
KR960019891A KR1019940029060A KR19940029060A KR960019891A KR 960019891 A KR960019891 A KR 960019891A KR 1019940029060 A KR1019940029060 A KR 1019940029060A KR 19940029060 A KR19940029060 A KR 19940029060A KR 960019891 A KR960019891 A KR 960019891A
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South Korea
Prior art keywords
transmission
protection relay
time
reception
relay system
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KR1019940029060A
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Korean (ko)
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KR0143536B1 (en
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김일동
박성택
장병태
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이종훈
한국전력공사
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    • 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
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

본 발명은 송전선 고장시 동작하여 해당 구간을 신속히 차단시켜 주기 위해 설치되는 전력선 반송 보호 계전 시스템의 동작상태를 자동측정하여 기록하고, 또 그 정보를 분석 가공하여 상태를 자동진단하여 주는 방법과 장치에 관한 것이다.The present invention provides a method and apparatus for automatically measuring and recording the operating state of a power line return protection relay system installed to operate in the event of a transmission line failure and quickly cut off the corresponding section. It is about.

진단을 위해 반송통신장치를 자동적으로 일정한 주기마다 가동시켜 이때 송, 수신되는 통신신호의 상태 및 지속시간을 측정하고 이와 아울러 연관되어서 동작되는 계전기들의 동작상태를 동시 측정하여 정착한 보호 계전을 위하여 요청되는 기준치를 중심으로 양부를 판단하여 시스템 상태를 진단하게 된다. 측정된 정보와 분석, 진단된 정보는 모두 저장되어 사후에도 재검토 할 수 있으며, 어느 때에라도 인쇄하여 사용할 수 있다. 이로써 오동작 현상이 많았던 반송 보호 계전시스템에 대한 원인규명이 용이해지며, 더우기 불량상태로 진전되기 이전에 예방보수 할 수 있는 정보를 쉽게 얻을 수 있게 된다.For diagnosis, the carrier communication device is automatically operated at regular intervals to measure the status and duration of communication signals transmitted and received at this time, and at the same time, to simultaneously measure the operating status of the relays in operation and to settle the protection relay. The system status is diagnosed by determining whether or not the system is based on the reference value. The measured information, the analysis and the diagnosed information are all stored for later review and can be printed and used at any time. This makes it easier to identify the cause of the return protection relay system, which had many malfunctions, and more easily obtain information that can be prevented and repaired before progressing to a bad state.

Description

전력선 반송 보호 계전 시스템에서의 고장 진단 방법 및 장치Fault Diagnosis Method and Device in Power Line Carrier Protection Relay System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명이 적용되는 시스템의 개략도,1 is a schematic diagram of a system to which the present invention is applied,

제2도는 본 발명에 따른 고장 진단장치의 구성을 나타낸 도면,2 is a view showing the configuration of a failure diagnosis apparatus according to the present invention,

제3도는 제2도에서의 인터페이스부의 상세도,3 is a detailed view of the interface unit in FIG.

제4도는 제2도에서의 변환부 및 중앙처리부의 상세도.4 is a detailed view of the conversion unit and the central processing unit in FIG.

Claims (6)

송전선의 반송 보호 계전 시스템에서 반송통신장치의 송수신 레벨과 신호지속 상태를 자동측정 기록하는 수단과, 반송신호 송수신과 연관하여 송전선 고장시 동작되어야 하는 보호 계전장치에 연결되는 계전기의 동작 상태를 확인하는 수단과, 이들 상태를 일정한 기준에 의해 자동판단하여 시스템의 상태를 진단하는 수단과, 자동측정된 송수신 신호상태, 계전기 동작상태, 전원변동상태와 같은 점검결과를 그대로 표시하고 인쇄하는 수단과, 상기 점검결과를 저장하는 수단을 포함하는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단장치.Means for automatically measuring and recording the transmission / reception level and signal continuity of the carrier communication device in the transmission protection relay system of the transmission line, and checking the operation status of the relay connected to the protection relay device which should be operated in case of transmission line failure in connection with transmission and reception of the carrier signal. Means, means for diagnosing the state of the system by automatically judging these states based on a predetermined criterion, means for displaying and printing inspection results such as automatically measured transmit and receive signal states, relay operating states, power fluctuation states, and the like; A device for diagnosing failure in a power line return protection relay system, comprising means for storing check results. 송전선의 반송 보호 계전시스템의 고장을 자동으로 진단하기 위한 방법에 있어서, 소정의 주/종 모드(510)를 읽어서 주 모드인 것으로 판정되고 운휴중이던 송전선이 가동되어 차단기가 열려 있다가 닫히고(511) 소정의 시간이상 유지되면(512) 해당 송전선의 시스템에 대하여 측정된 정보를 분석한 뒤 분석된 정보를 이용하여 고장발생여부를 진단하는 소정의 진단절차를 수행하는 제1단계와; 상기 소정의 시간이상 유지되지 않으면서 차단기가 열리게 되면(513) 키보드로부터 입력된 사항이 없는지 알아보고 입력이 있으면(514) 그 사항에 따라 행하며 만일 어떤 송전선이 반송 보호 계전 시스템을 진단해 보고 싶다는 입력이 있으면(515) 해당 송전선 번호에 따라 상기 진단절차로 넘어가는 제2단계와; 상기 제2단계에서, 키보드입력이 없으면(516) 진단주기 시간을 계산하고(517) , 진단주기가 초과되면(518) 소정의 송전선 진단순서에 따라 상기 진단절차로 넘어가는 제3단계와; 상기의 제1단계에서, 종속적인 모드인 것으로 판명되면, 주장치에서 송신되어 신호가 수신될 때까지 대기하고(701), 신호가 수신되면(702) 신호 레벨을 측정 기록하고(703), 신호가 끝나면(704) 주장치 쪽으로 반응신호를 보내기 위해 송신장치를 작동시키는 신호를 발생시키되, 수신종료후 일정시간 경과(705)후에 송신장치를 작동시켜 송수신이 겹치지 않도록 하고(531), 상기의 진단절차로 넘어가는 제4단계를 포함하는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단방법.In a method for automatically diagnosing a failure of a transmission protection relay system of a transmission line, a predetermined main / slave mode 510 is read and determined to be the main mode, and a transmission line that is in operation is activated to open and close the breaker (511). A first step of performing a predetermined diagnosis procedure for analyzing whether the failure occurs using the analyzed information after analyzing the measured information about the system of the transmission line if the predetermined time is maintained (512); When the breaker is opened without being kept for the predetermined time (513), it is checked whether there is no input from the keyboard and if there is an input (514), it is performed according to the input. If any transmission line wants to diagnose the return protection relay system, If there is (515) a second step of proceeding to the diagnosis procedure according to the corresponding transmission line number; In the second step, if there is no keyboard input (516), calculating a diagnostic cycle time (517), and if the diagnostic cycle is exceeded (518), proceeding to the diagnostic procedure according to a predetermined transmission line diagnostic procedure; In the first step above, if it is determined to be in dependent mode, it is transmitted from the main apparatus and waits until a signal is received (701), if a signal is received (702), the signal level is measured and recorded (703), and the signal is When it is finished (704) to generate a signal for operating the transmission device to send a response signal to the main device, after a certain time elapses after reception (705) to operate the transmission device so that the transmission and reception do not overlap (531), the diagnostic procedure described above And a fourth step to pass over. Fault diagnosis method in power line return protection relay system. 제2항에 있어서, 상기 진단절차는 반송통신장치에서 송신되도로 하기 위해 송신지시를 발하고(531) 이어서, 송신레벨, 수신레벨, 송, 수신계전기 동작상태, 통신장치의 전원용 DC전압 등의 정보를 취득하여 기록하는 제5단계(532)와; 기록된 정보를 분석하여 송/수신 레벨의 기준치 이상/이하 시간을 계산하고, 최대, 최소치, 송신시간, 수신시간, 지연시간 등을 계산하는 제6단계(533)와; 해당 통신장치의 표준송신 레벨과 허용한계치 등을 이용하여 미리 정해 놓은 것을 데이타 테이블에서 비교의 기준치를 읽어 와서 상기 송신레벨, 수신레벨, 수신시간, DC전압을 순차로 비교하고 정상인지, 불안한 상태인지, 불량인지를 비교진단 하는 제7단계와; 종합판정을 하기 위해 상기 제7단계에서 진단된 5가지 종류에 대하여 모두가“양호”인 경우는 종합판정 양호로(582), 모두 요점검 이었으면 “요점검”으로(583) 그리고 “불량”이 하나라도 있으면 불량으로(584) 판정하고 해당되는 LED 지시기가 점등(585)되도록 하는 제8단계와; 상기의 측정 및 진단과정에서 얻은 모든 정보 및 판단결과를 디스크에 저장하고(590) 인쇄 요청이 있으면 프린터로 인쇄명령을 지시(600)하는 제9단계를 포함하는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단방법.The method according to claim 2, wherein the diagnostic procedure issues a transmission instruction (531) to be transmitted from the carrier communication device. Subsequently, a transmission level, a reception level, a transmission, a reception relay operation state, a DC voltage for the power supply of the communication device, and the like are transmitted. A fifth step (532) of acquiring and recording the information; A sixth step 533 for analyzing the recorded information to calculate time above / below the reference value of the transmission / reception level, and calculating the maximum, minimum, transmission time, reception time, delay time, and the like; Read the reference value of the comparison from the data table using the standard transmission level and the allowable limit value of the corresponding communication device, and compare the transmission level, reception level, reception time, DC voltage sequentially and check whether it is normal or unstable. A seventh step of comparing and diagnosing whether the defect is defective; In the case of all 5 types diagnosed in the above step 7 for the comprehensive judgment, if all are “good”, the overall judgment is good (582); if all were the main check, the “necessary check” (583) and the “bad” An eighth step of determining if there is any one (584) and causing the corresponding LED indicator to light (585); And a ninth step of storing all the information and the determination result obtained in the measurement and diagnosis process on a disk (590) and instructing a print command (600) to a printer when a print request is made. How to diagnose faults in 제3항의 제7단계에 있어서, 상기 송신레벨 및 상기 수신레벨을 기준치 이상이면 양호, 기준치의 70% 이상이면 요점검으로, 그리고 기준치의 70%미만이면 불량으로 각각 판정하는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단방법.The power line conveyance according to claim 7, wherein the transmission level and the reception level are judged as good if the reference value is higher than or equal to the reference value, and if it is 70% or more of the reference value, the defect is checked. Fault diagnosis method in protective relay system. 제4항에 있어서, 상기 수신시간은 기준시간 이상이면 양호, 기준시간 미만이면서 그것의 98%이상이면 요점검, 98%미만이면 불량으로 각각 판정되는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단방법.5. The failure of the power line carrier protection relay system according to claim 4, wherein the reception time is determined to be good if the reference time is longer than or equal to, and less than or equal to the reference time, if it is greater than or equal to 98%, and if it is less than 98%. Diagnostic method. 제5항에 있어서, 상기 DC전압은 정격전압의 士5% 이내이면 양호, ±15% 이내이면 요점검으로, 그리고 그 이상으로 초과하는 경우는 불량(574)으로 각각 판정되는 것을 특징으로 하는 전력선 반송 보호 계전 시스템에서의 고장 진단방법.6. The power line according to claim 5, wherein the DC voltage is determined to be good if it is within 5% of the rated voltage, a main check if it is within ± 15%, and a bad 574 if exceeded. Fault diagnosis method in return protection relay system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940029060A 1994-11-07 1994-11-07 Method and device for diagnoising fault in protective relay system KR0143536B1 (en)

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KR1019940029060A KR0143536B1 (en) 1994-11-07 1994-11-07 Method and device for diagnoising fault in protective relay system

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KR0143536B1 KR0143536B1 (en) 1998-10-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357493B1 (en) * 2001-02-20 2002-10-18 학교법인 성균관대학 Method for detecting and discriminating fault of transmission line using fault-generated high frequency signals
KR100479692B1 (en) * 2002-09-30 2005-04-06 주식회사 젤파워 Apparatus for preventing mal-operation of sudden pressure relay system for protecting transformer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101065067B1 (en) * 2009-10-30 2011-09-19 한국전력공사 Protective relay apparatus and method of the same
KR101926312B1 (en) 2018-07-27 2018-12-06 함기철 Academic Affairs Management System and Method for Recognizing Talent and Career Based Credits and System for Providing Talent Donate Bank Service

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357493B1 (en) * 2001-02-20 2002-10-18 학교법인 성균관대학 Method for detecting and discriminating fault of transmission line using fault-generated high frequency signals
KR100479692B1 (en) * 2002-09-30 2005-04-06 주식회사 젤파워 Apparatus for preventing mal-operation of sudden pressure relay system for protecting transformer

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