도시철도 전차선 결빙의 영향인자에 관한 연구: 전동차 보조전원장치(SIV) 차단 사례를 중심으로
A study on the Icing factors of Urban Railway Catenary Wire : Focused on the Block of Train Auxiliary Power Supply(SIV)
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초록
최근 동절기 폭설로 인한 전차선 결빙으로 열차지연이 발생되고 있다. 본 논문은 최근 4년간 대전도시철도 1호선 차량기지에서 발생한 동절기 눈이 내린 후 전차선 결빙에 의한 보조전원장치(SIV)가 차단된 56개 열차를 대상으로 사례분석을 통한 전차선 결빙의 원인과 온도와 습도와의 상관관계를 분석하고자 하였다. 폭설이나 진눈개비, 서리가 전차선에 내린 후 외기온도가 –1℃이하 이고 습도 90%의 이상 관측 시 전차선 결빙현상이 자주 발생하는 것으로 분석되었다. 다만, 전날 눈이 내리지 않고 90%이상의 높은 습도와 영하(-)의 환경에서 4년간 총29일, 500대 열차를 분석한 결과 전차선 결빙이 발생되지 않아 맑은 날씨에서 습도와 영하(-)는 영향이 없는 것으로 분석되었다. 이들 결과는 동절기 전차선 결빙에 필요한 안전관리 방안수립에 유용하게 활용할 수 있을 것이다.
Abstract
Recently, train delays occurred due to icing of the catenary wire due to heavy snow in the winter. This study analyzed cases targeting 56 trains whose auxiliary power equipment (SIV) was cut off during the winter, and attempted to analyze the relationship between icing on the catenary wire and temperature (humidity). After heavy snow, sleet, or frost fell on the catenary wire, it was analyzed that icing occurs frequently when the outside temperature is below -1°C and the humidity is above 90%. However, As a result of analyzing 500 trains for a total of 29 days over 4 years in an environment with no snow the previous day, high humidity of more than 90%, and sub-zero (-), it was analyzed that there was no effect in clear weather because icing did not occur on the catenary wire. These results can be useful in establishing safety management measures necessary for icing of he catenary wire in the winter
참고문헌 (11)
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