교류급전시스템 통합보호계전기용 디지털 시뮬레이터 성능 시험

초록

Most of power systems, including power systems for railway, use protective relays to guarantee the reliability of the power systems even if when faults occur in the power systems. Unfortunately, however, currently most of protective relays are not localized. This leads two main problems; problems in maintenance and compatibilities between protective relays. Thus, many companies and researchers are working on the localization of the protective relays. To develop localized protective relays, tests and verifications are required. Therefore, we introduce new digital simulator for protective relays in railway. Test results show that the digital simulator provide proper amplification by amplifier and various simulation conditions can be achieved by enabling the digital simulator to use EMTDC simulation outputs.