Research On Adjacent Jointless Track Circuit Crosstalks

With the development of the railway,in the busy section,such as Guangzhou-Shenzhen,there have been three lines,or even four-line parallel to the situation,so there must be two lines running in the same track circuit,and the same non-insulated track circuit And the interference between non-insulated track circuits in the same direction can not be recognized and protected by the locomotive signal,which may affect the efficiency of train operation and even lead to train operation accidents.At the same time,four-line parallel situation exists in the busy section of the line,so four-line parallel situation is less,resulting in the neglect of four-wire parallel situation,in the event of adjacent line interference problems,may lead to serious consequences,so this article This has been studied,its contents include:1.Based on the basic structure and working principle of the non-insulated track circuit,the main reasons causing the adjacent line interference and the mechanism of the main cause of the adjacent line interference are analyzed theoretically.2.Based on the transmission line theory,the rail model,the compensation capacitance model and the tuning region model of the transmitting end are established based on the six-port network of the single-line and the same-direction two-wire uninsulated track circuit.The model of six-port network is established.,The model of rail-to-rail leakage and rail-to-ground leakage model and the adjacent-line interference model of space electromagnetic radiation in the same direction are established.3.Based on the model,the short-circuit current of uninsulated track circuit is simulated,the short-circuit current of adjacent line is simulated,and the model of adjacent line interference is verified.The experimental results show that the proposed model is correct and can accurately reflect the short-circuit current of the adjacent line interference.It can provide theoretical support and experimental means for the follow-up co-directional adjacent line interference protection.