An electrified railway automatic phase separation system and its automatic phase separation method

Abstract

The invention discloses an automatic passing phase-separation system and method of an electrified railway. According to the automatic passing phase-separation system of the electrified railway, a first contact net and a second contact net are connected with a neutral section through a first electric subsection and a second electric subsection respectively; the position, close to the first electric subsection, of the first contact net is connected to a first current transformer in series; a second current transformer is connected with a first normally-opened switch in series and then is connected to the first electric subsection in parallel; the position, close to the second contact net, of the second contact net is connected to a fourth current transformer in series; a third current transformer is connected with a second normally-opened switch in series and then is connected to the second electric subsection in parallel; a supporting pillar at the first current transformer is provided with a first pantograph detector; a second pantograph detector is installed at the first electric subsection, a third pantograph detector is installed at the second electric subsection, and a fourth pantograph detector is installed at the fourth current transformer; the first current transformer, the second current transformer, the third current transformer, the fourth current transformer, the first pantograph detector, the second pantograph detector, the third pantograph detector, the fourth pantograph detector, the first normally-opened switch and the second normally-opened switch are respectively connected with a control unit. The automatic passing phase-separation system of the electrified railway is simple in structure, little in investment, convenient to implement, and capable of achieving automatic passing phase-separation of the electrified railway more completely and reliably.

Description

technical field [0001] The invention relates to an automatic phase separation system and an automatic phase separation method for an electrified railway. Background technique [0002] my country's electrified railway generally adopts single-phase power frequency AC system. In order to make the three-phase load of the power system as balanced as possible, the electrified railway often adopts the scheme of alternating phase sequence and phase-separated partition power supply. The adjacent power supply intervals at the phase-separation partition are divided by air or insulators to form insulating electrical phase separation, referred to as electrical phase separation or phase separation. [0003] In order to prevent electric locomotives from burning out catenary suspension components due to arcing through phase separation, and even causing accidents such as phase-to-phase short circuit, when the train is over-phase-splitting, the driver needs to perform a series of operations t...

AI Technical Summary

Problems solved by technology

But it is only suitable for the over-phase separation situation of the electric train that keeps receiving current before passing through the electric phase separation. For example, the electric train does not receive current before the electric phase separation, but it needs to receive current when it reaches the neutral section. At this time, connect the neutral The two switches of the neutral section are both in the off state, and the current transformer cannot detect the train passing signal, resulting in the inability of the train to receive current when passing through the entire neutral section, resulting in a power supply blind zone, which reduces the train speed and traffic capacity

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