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在电气化牵引区段,为了使牵引电流畅通无阻地流回牵引变电所,需连接相邻轨道电路的扼流变压器中点。但如果全部采用双扼流轨道电路,中点相连后,又易构成迂回电路,形成第三轨效应。所谓“第三轨效应”是指双轨条传输通道以外,还存在一条回线(迂回电路)沟通电路,当轨道区段一根轨
In the electrification traction section, in order to make the traction current flow unimpeded back to the traction substation, it is necessary to connect the midpoint of the choke transformer of the adjacent track circuit. However, if all dual choke track circuit, connected to the midpoint, and easy to form detour circuit, the formation of the third rail effect. The so-called “third rail effect” refers to the double rail transmission channel, there is a loop (circuitous circuit) communication circuit, when the track section of a rail