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Online anti-icing and de-icing control system of alternating current electrified railway catenary

An electrified railway and catenary technology, applied in the direction of AC network voltage adjustment, electrical components, overhead lines, etc., can solve the problems affecting the normal operation of the traction power supply system, unable to prevent ice and melt ice, etc., achieve low cost, reduce capacity and cost, the effect of increasing the terminal voltage

Active Publication Date: 2015-03-25
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme must disconnect the power supply after the formation of icing phenomenon, and change the system connection scheme to form the ice-melting current path, which cannot realize anti-icing and ice-melting without affecting the normal power supply of catenary. Therefore, if this scheme is applied to electrification The power supply system of the railway will definitely affect the normal operation of the traction power supply system

Method used

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  • Online anti-icing and de-icing control system of alternating current electrified railway catenary
  • Online anti-icing and de-icing control system of alternating current electrified railway catenary
  • Online anti-icing and de-icing control system of alternating current electrified railway catenary

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Embodiment Construction

[0034] figure 1 It is shown that a specific implementation of the present invention is: an on-line anti-icing and melting system for an AC electrified railway traction network, including an anti-icing or melting current generating device SVG1 (1) at the end of the power supply arm and a current at the head end of the power supply arm Compensation device SVG2(2), of which:

[0035] The power supply arm end device SVG1 (1) is connected with the end of the traction net (4) and the steel rail (5), and generates anti-icing or melting current under the control of the control device.

[0036] The head end device SVG2 (2) of the power supply arm is connected with the head end of the traction net (4) and the steel rail (5), and under the control of the control device, it compensates for the anti-icing or melting current of the end SVG1 and the non-freezing current generated by the locomotive (6). Work current. The end melting current generating device SVG1 (1) and the head melting current...

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Abstract

The invention discloses an online anti-icing and de-icing control system of an alternating current electrified railway catenary. The system comprises an anti-icing and de-icing current generator SVG1 (1) at a tail end of a power supply arm, and a current compensating device SVG2 (2) at an initial end of the power supply arm; the de-icing current generator SVG1 (1) at the tail end of the power supply arm is connected to tail ends of a traction network (4) and a steel rail (5); a de-icing current is generated under the control of a control device; the current compensating device SVG2 (2) at the initial end of the power supply arm is connected to initial ends of the traction network (4) and the steel rail (5), and the de-icing current of the SVG1 at the tail end and a reactive current generated by a locomotive (6) are compensated under the control of the control device. Meanwhile, Control schemes of the online anti-icing and de-icing control system of the alternating current electrified railway catenary can be achieved; different anti-icing or de-icing currents can be effectively generated aiming at different work conditions of the traction network in the control schemes, and a tail end voltage of the power supply arm and a power supply power factor of a traction arm can be provided at the same time.

Description

Technical field [0001] The invention relates to an auxiliary device of an AC electrified railway traction power supply system, in particular to an online anti-icing and ice melting system of an AC electrified railway contact network and a control scheme thereof. Background technique [0002] In the AC electrified railway power supply system, the catenary will become icy under harsh environmental temperature and humidity conditions, causing serious accidents such as the failure of the locomotive pantograph to receive current, the catenary galloping, and even the collapse of the pole. How to prevent or melt the contact line icing is a problem that the traction power supply system must face and solve. [0003] At present, DC ice melting is currently recognized as a mature and feasible technology. This technology usually uses thyristor rectifiers as the core converter equipment, supplemented by smoothing reactors, AC filters and other components, but it needs to provide DC ice melting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/16H02J3/16B60M1/12
CPCY02E40/34Y02E40/30
Inventor 李群湛舒泽亮易东郭蕾
Owner SOUTHWEST JIAOTONG UNIV
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