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Ground switch passing neutral section bow net arc suppressing method and device, and passing neutral section device

A technology of suppressing device and over-phase, applied in the field of rail transit, can solve problems such as resonance over-voltage, and achieve the effects of reducing current, speeding up decay time, and easy operation

Active Publication Date: 2018-10-09
ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in this scheme, in order to suppress the overvoltage of the system, it is necessary to introduce a large-capacity capacitor C. When the locomotive is in the braking condition, it may cause the LC resonance of the traction network, and further cause the occurrence of resonance overvoltage. Not used in many practical projects

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  • Ground switch passing neutral section bow net arc suppressing method and device, and passing neutral section device
  • Ground switch passing neutral section bow net arc suppressing method and device, and passing neutral section device
  • Ground switch passing neutral section bow net arc suppressing method and device, and passing neutral section device

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as Figure 2 to Figure 9As shown, the ground switch over-phase pantograph-catenary arc suppression method in this embodiment reduces the current of the power supply circuit formed by the power supply arm and the pantograph when the pantograph is detached from or contacts the power supply arm during the over-phase process to suppress the arc . Since the current of the power supply circuit formed by the power supply arm and the pantograph is small when the pantograph contacts or separates from the power supply arm, the generation of arc can be suppressed. Specifically, the internal resistance at the end of the power supply arm can be increased to reduce the current of the power supply loop formed by the power supply arm and the pantograph, for example, by setting a high-impedance contact wire at the end of each power supply arm. Due...

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Abstract

The invention discloses a ground switch passing neutral section bow net arc suppressing method, further discloses a ground switch passing neutral section bow net arc suppressing device, and further discloses a ground switch passing neutral section device. The ground switch passing neutral section bow net arc suppressing method is used for reducing a current of a power supply loop constituted by power supply arms and a pantograph when the pantograph gets away from or makes contact with the power supply arms so as to suppress an arc in the passing neutral section process. The ground switch passing neutral section bow net arc suppressing device comprises high-impedance contact lines arranged at the tail ends of all the power supply arms and is used for reducing the current of the power supplyloop constituted by the power supply arms and the pantograph when the pantograph gets away from or makes contact with the power supply arms so as to suppress the arc in the passing neutral section process. The ground switch passing neutral section device comprises a switch assembly and the ground switch passing neutral section bow net arc suppressing device, and the switch assembly is used for connecting a neutral zone with the contact net two-phase power supply arms. The ground switch passing neutral section bow net arc suppressing method and device and the ground switch passing neutral section device all have the advantages of arc suppressing and the like.

Description

technical field [0001] The invention mainly relates to the technical field of rail transit, in particular to a ground switch over-phase-splitting pantograph-catenary arc suppression method, suppression device and over-phase device. Background technique [0002] With the development of my country's electrified railways and the widespread application of electric locomotives, the traction power supply system adopts the AC single-phase power frequency commutation power supply mode. It is necessary to install an electric phase separation device within 30km. As the line traffic volume and operating speed gradually increase, overvoltage and arcing will occur when the electric locomotive passes through the articulated electric phase separation, which will affect the safe operation of the railway. In order to solve this problem, at this stage, the power electronic switch ground automatic over-phase scheme, the vehicle-mounted automatic power-off over-phase scheme, and the column switc...

Claims

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Application Information

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IPC IPC(8): B60M3/04
Inventor 胡前周方圆曹洋何多昌胡家喜罗仁俊吴丽然何健明肖宇翔刘中邱文俊吕顺凯吴明水
Owner ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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