曹輝
摘 要:國家能源集團成立,重載列車開行,朔黃鐵路2017年和2018年運量連續突破3億噸。重載列車開行后列車長度增加,過分相又是主從車分別控制,主從車之間距離大約1 300m,傳輸距離的增大使信號傳輸不夠穩定,增加了主從車過分相的難度。本文根據兩萬噸重載列車的特性和朔黃鐵路線路特點,分析總結過分相的操縱辦法和注意事項。
關鍵詞:平道分相;坡道分相;非正常分相;制動力不足
中圖分類號:U268.4 文獻標識碼:A 文章編號:1003-5168(2019)22-0109-02
Analysis of Over-phase Operation of 20,000-ton Train
CAO Hui
Abstract: With the establishment of the State Energy Group and the operation of heavy haul trains, the Shuohuang Railway has continuously exceeded 300 million tons in 2017 and 2018. After Heavy-haul Train running, the train length increases, and the overlapping phase is controlled by the master-slave vehicle separately. The distance between the master-slave vehicle and the slave vehicle is about 1 300 m. The increase of the transmission distance makes the signal transmission unstable, which increases the difficulty of the master-slave vehicle passing through the phase. According to the characteristics of 20,000 tons heavy haul train and Shuohuang railway line, this paper analyzed and summarized the operation methods and precautions of over-phase.
Keywords: horizontal phase separation;ramp phase separation;abnormal phase separation;insufficient braking force
朔黃鐵路為國家I級干線、雙線電氣化重載鐵路,是我國目前投資建設規模最大、雙線電氣化合資鐵路。在電氣化鐵路區段,為使電力系統三相盡可能平衡,接觸網采用分段換相供電,防止相間短路,必須在各獨立供電區之間建立分相區,各相間采用空氣或絕緣分隔。朔黃鐵路為現代電氣化供電鐵路,也存在過分相的問題。如何保證長大列車過分相時的安全,過分相使用什么操縱方案,怎么減少過分相時的列車沖動,都是當前值得探討的問題[1]。
1 自動過分相裝置
1.1 交流機車過分相裝置
朔黃線交流機車自動過分相裝置通過實時采集監控裝置數據實現分相預告、分相強迫、分相斷電,機車通過分相絕緣器時自動過分相裝置檢測接觸網失壓后又恢復,自動過分相裝置會默認已通過分相區,自動閉合主斷路器。
1.2 同步過分相裝置
LTE同步編組狀態下從控機車過分相裝置通過采集主控機車數據自行斷開主斷路器實現過分相,從控同步狀態下過分相,采用多種措施確保分相前主斷斷開。……