지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
A distance relay scheme is commonly used for backup protection. This scheme, called a step distance protection, is comprised of 3 steps for graded zones having different operating time. As for the conventional step distance protection scheme, Zone 2 can exceed the ordinary coverage excessively in case of a transformer protection relay especially. In this case, there can be overlapped protection area from a backup protection relay and, therefore, malfunctions can occur when any fault occurs in the overlapped protection area. Distance relays and overcurrent relays are used for backup protection generally, and both relays have normally this problem, the maloperation, caused by a fault in the overlapped protection area. Corresponding to an IEEE standard, this problem can be solved with the modification of the operating time. On the other hand, in Korea, zones are modified to cope with this problem in some specific conditions. These two methods may not be obvious to handle this problem correctly because these methods, modifying the common rules, can cause another coordination problem. To overcome this problem clearly, this paper describes an improved backup protection coordination scheme using an IEC 61850-based distance relay for transformer backup protection. IEC 61850-based IED(Intelligent Electronic Device) and the network system based on the kernel 2.6 LINUX are realized to verify the proposed method. And laboratory tests to estimate the communication time show that the proposed coordination method is reliable enough for the improved backup protection scheme.
목차
Abstract
1. 서론
2. 보호협조 문제
3. 개선된 보호협조 방법
4. 사례 연구
5. 결론
감사의 글
참고문헌
저자소개
참고문헌 (5)
참고문헌 신청
한국전력 송변전처 / 정정룰 2004, 송변보호A01/보호 01_3 부록
IEEE Standard C37.113-1999, IEEE Guide for rotective relay Application to Transmission Lines :42~44
2003 / International Standard IEC 61850-5 Part 13 : Specific Communication Service Mapping(SCSM) -Mappings to MMS - first edition 2003-07
Cheol-Hun Kim / 2007 / Development of an IEC 61850 based Distance IED
Hatem A. Darwish / 2005 / Step-by-Step Simulation of Transformer Winding Faults for Electromagnetic Transient Programs / Transmission and Distribution Conference and Exhibition
IEEE Standard C37.113-1999, IEEE Guide for rotective relay Application to Transmission Lines :42~44
2003 / International Standard IEC 61850-5 Part 13 : Specific Communication Service Mapping(SCSM) -Mappings to MMS - first edition 2003-07
Cheol-Hun Kim / 2007 / Development of an IEC 61850 based Distance IED
Hatem A. Darwish / 2005 / Step-by-Step Simulation of Transformer Winding Faults for Electromagnetic Transient Programs / Transmission and Distribution Conference and Exhibition
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UCI(KEPA) : I410-ECN-0101-2012-560-003795408