Traction contact system

A catenary and traction motor technology, applied in the direction of electric power transmission AC network, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc., can solve high power loss and three-phase power system load imbalance To achieve the effect of reducing power loss, balancing and stabilizing three-phase power load, and improving utilization rate

Active Publication Date: 2013-01-30
ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by this application is to provide a traction catenary, which is used to solve the problem that when the traction catenary directly couples the three-phase alternating curre

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[0096] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0097] At present, the generator in the power system, namely the generator in the power plant, obtains high-voltage AC power that is convenient for long-distance transmission through the sound of the step-up transformer, and uses the high-voltage AC power to obtain single-phase AC power through the traction transformer and traction contact network in the railway power supply system. , The single frequency converter in the power distribution system rectif...

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Abstract

The application discloses a traction contact system applied to a locomotive load; the locomotive load at least comprises a frequency converter and a traction motor; the traction contact system comprises a first receiving end convertor station and a first sending end convertor station, wherein the first receiving end convertor station is connected with a power system, rectifies a three-phase alternating current output by the power system to obtain a direct current and outputs the direct current; and the first sending end convertor station receives the direct current output by the first receiving end convertor station, inverts the direct current to obtain a single-phase alternating current, conveys the single-phase alternating current to a frequency changer, triggers the frequency changer to rectify and invert the single-phase alternating current to generate the three-phase alternating current, and sends the three-phase alternating current to the traction motor. According to the traction contact system disclosed by the embodiment of the invention, the three-phase power load of the power system for providing the three-phase alternating current can be balanced and stabilized, thereby avoiding the shortage of unbalanced load of the power system, reducing the loss of electric energy and improving the utilization rate of the electric energy.

Description

technical field [0001] The present application relates to the technical field of high-voltage power transmission, in particular to a traction catenary. Background technique [0002] Currently, if figure 1 Shown is a schematic diagram of the structure of the electrified railway power supply system applied in current transmission. Wherein, after the power system generates three-phase high-voltage alternating current, the three-phase high-voltage alternating current is transmitted to each locomotive load through the electrified railway power supply system, so as to supply power to the traction motor in the locomotive load. Among them, the electrified railway power supply system includes a traction catenary, which directly couples the 110kv high-voltage alternating current output by the power system to generate 25kv single-phase alternating current, and transmits the single-phase alternating current to the frequency converter of the locomotive load for rectification and inversi...

Claims

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Application Information

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IPC IPC(8): H02J3/36H02P27/06H02J3/26
CPCY02E40/50
Inventor 吴强敬华兵王卫安何伯钧邓明唐剑钊翟文杰龚芬彭京刘斐姜耀伟
Owner ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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