Direct-current electrical railway catenary de-icing equipment of high-speed electrified railway and direct-current catenary de-icing system

Abstract

The invention discloses direct-current catenary de-icing equipment of a high-speed electrified railway and a direct-current catenary de-icing system. The equipment comprises an alternating-current switch unit, a rectifier transformer, a rectifier and control protection unit, a direct-current switch unit and a reactive compensation unit, wherein two input ends of the rectifier transformer are respectively connected with secondary side lines of first and second traction power supply transformers of a substation by virtue of the alternating-current switch unit, another input end of the rectifier transformer is connected with an earth wire of an earth box of the substation, an output end of the rectifier transformer is connected with the rectifier and control protection unit, an output end of the rectifier and control protection unit is connected with an uplink and a downlink of a catenary by virtue of the direct-current switch unit to perform heating de-icing on the catenary, and the reactive compensation unit is connected at the output end of the rectifier transformer and is used for performing reactive compensation and harmonic management. According to the equipment and the system, the concentration and systematization of functions are realized, the operation and maintenance are safe, convenient and efficient, and the installation ways are flexible and changeable.

Description

technical field [0001] The invention relates to a DC deicing device and a system thereof applied to power supply lines in the field of electric power systems, in particular to a DC deicing device and a system for a high-speed electrified railway catenary. Background technique [0002] In recent years, my country's electrified railway construction has entered a stage of rapid development, and new high-power AC-DC electric locomotives have gradually become the main model of my country's electrified railways, especially high-speed railways. In particular, the traction power supply system is responsible for providing electric energy to high-speed trains, and is a key factor for the safe, reliable and efficient operation of trains. [0003] However, with the change of global temperature, there have been historically rare ice and snow disasters in southern, central and eastern China, especially in most parts of Hunan, Guizhou and Jiangxi provinces, where power facilities have suff...

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Problems solved by technology

This document proposes an anti-icing scheme using adjustable reactors during the skylight period. Although this scheme can effectively reduce active power loss, the disadvantage is that the power factor is relatively low (0.28-0.3), and the reactive power injected by the catenary itself into the power system High power, up to 14,607kvar / h

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