Ground automatic over-phase arc suppression method, suppression device and over-phase device

Abstract

The invention discloses a ground automatic over-phase-separation arc suppression method. In the process of over-phase, compensation current is output to a power supply circuit composed of a power supply arm, a ground over-phase device and a neutral zone to promote commutation, thereby reducing power receiving The bow cuts off the current when it touches or breaks away from the catenary to suppress the arc. The invention also discloses a suppressing device, which includes a compensation module, which is connected in series in the power supply circuit composed of the power supply arm, the ground over-phase splitting device and the neutral zone, and is used to output compensation current to promote commutation and reduce power receiving. The cut-off current of the bow when it touches or breaks away from the catenary. The invention also discloses a ground automatic phase splitting device, which includes at least two switch assemblies, and the two switch assemblies are respectively connected with the two-phase power supply arm and the neutral zone; the two switch assemblies are connected with the neutral zone as described above The arc suppression device described above. The suppressing method, suppressing device and excessive phase splitting device of the present invention all have the advantages of effectively reducing or avoiding arc generation and the like.

Description

technical field [0001] The invention mainly relates to the technical field of over-phase separation, in particular to a ground automatic over-phase-separation arc suppression method, suppression device and over-phase device. Background technique [0002] The electrified railway catenary adopts single-phase power frequency AC power supply mode. In order to reduce the voltage unbalance of the three-phase power supply network of the power system and facilitate the maintenance of catenary faults, the electrified railway adopts segmented and phase-separated power supply. Therefore, in two phases with different voltage phases A non-electric neutral zone is embedded between the power supply arms, and the transition between each power supply arm and the neutral zone is smooth through anchor segment joints. [0003] In the operation of electrified railways, in order to reduce the adverse effects of the catenary electrical phase separation area, most of them use automatic phase separa...

AI Technical Summary

Problems solved by technology

Therefore, the parameters of supporting components such as automatic phase splitting device and transmission line are different, and the voltage drop caused by these devices is also different, which brings inconvenience to arc suppression

However, in the existing automatic phase separation system on the ground of electrified railways, there is no effective arc suppression scheme

In addition, through relevant theoretical research and practice, in the process of switching the pantograph between the power supply arm and the neutral zone, because there is a process of gradually switching from one power supply circuit to another for commutation, if the switching The cut-off current at all times is too large, which will also cause arc generation

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