345kV 계통 모델링 데이터를 활용한 과여자 보호계전기법

• Published in: 전기학회 논문지 P권, 60(4) Vol. 60; no. 4; pp. 175 - 180
• Main Authors: 박철원(Chul-Won Park), 반우현(Yu- Hyeon Ban)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2011
• Subjects: 전기공학; 345kV Power System; Over-Excitation; Gain Compensation; DFT; ECMS; IED; EMTP-RV
• ISSN: 1229-800X; 2586-7792

A large AC generator is an important component of the power system. It is a need for research of AC generator protection relay for the next-generation ECMS and an efficient operation of protection control system. However, most of protection and control systems used in power plants have been still imported as turn-key and operated in domestic. This may cause the lack of the correct understanding on the protection systems and methods, and thus have difficulties in optimal operation. In this paper, over-excitation protection relaying is one of the protective factors in generator protection IED was presented. The cause and protection principles were dealt and, DFT-based gain compensation algorithm was adopted for the frequency measurement. The Republic of Korea 345kV modeling data by EMTP-RV was used for performance evaluation.