광역 보호계전 지능화를 위한 동적 주파수 모니터링 S/W 개발

• Published in: 전기학회 논문지 P권, 61(4) Vol. 61; no. 4; pp. 174 - 179
• Main Authors: 김윤상(Yoon-Sang Kim), 박철원(Chul-Won Park)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2012
• Subjects: 전기공학; Frequency monitoring software; Advanced frequency estimation; Wide-area protection relaying intelligence; Black-outages; K-FNET
• ISSN: 1229-800X; 2586-7792
• DOI: 10.5370/KIEEP.2012.61.4.174

The social and economic level of damages might be highly increased in the case of wide-area black-outages, because of heavy dependence of electricity. Therefore, the development of a wide-area protection relay intelligence techniques is required to prevent massive power outages and minimize the impact strength at failure. The frequency monitoring and prediction for wide-area protection relaying intelligence has been considered as an important technology. In this paper, a network-based frequency monitoring system developed for wide-area protection relay intelligence is presented. In addition, conventional techniques for frequency estimation are compared, and a method for advanced frequency estimation and measurement to improve the precision is proposed. Finally, an integrated monitoring system called K-FNET(Korea-Frequency Monitoring Network) is implemented based on the GPS and various energy monitoring cases are studied.