교직류 겸용 전동차의 모진 보호에 관한 연구 = A Study on the protection system to prevent a short circuit of the AC/DC dual voltage electric car

다국어 초록 (Multilingual Abstract)

Even if Change-over Error of between Alternative Current and Direct Current(CEACDC) occurs in the neutral section, AC/DC dual voltage electric cars protect the circuit by cut off the main circuit breaker through monitoring the power of catenary. However, if CEACDC and MCB cut off or power monitoring error occur at the same time, Protective system does not work. Eventually, It causes train service disabilities such as MF burnout or power cut off. In this study, a more effective protective system than existing system was suggested by analyzing related circuits such as Train Control & Monitoring System, Auxiliary Power Supply unit, Direct current Voltage sensor, Main circuit breaker auxiliary relay. As a result, It is expected that new protective system will be more effective in preventing train service disabilities such as Main Fuse burnout, DC arrestor burnout and power cut off the catenary.

참고문헌 (Reference)

1 철도용어연구회, "철도기본용어사전" 한모드 2011

2 "전동차의 교직 자동 절환시스템"

3 Baik kwangsun, "Study of MCB Operation of Urban train in AC/DC Dead-section" 52 (52): 1279-1281, 2003

4 Kim, T.J., "A Study on the Reliability Improvement and On‐track test for Automatic Transfer of ADS System in Electric Railway Locomotive" Seoul National University of Science and Technology 2018