Ice melting method for overhead contact system of electrified railway and ice melting system thereof

A technology of electrified railway and ice-melting method, which is applied in the direction of electrical components, cable installation, overhead line/cable equipment, etc., can solve the problem of not being able to melt the additional wire ice coating, and achieve the effect of eliminating damage

Inactive Publication Date: 2010-02-03
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010]Currently, relying on the above methods, it is not possible to melt the icing of additional wires, hanging strings, insulators and other equipment in the catenary

Method used

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  • Ice melting method for overhead contact system of electrified railway and ice melting system thereof
  • Ice melting method for overhead contact system of electrified railway and ice melting system thereof
  • Ice melting method for overhead contact system of electrified railway and ice melting system thereof

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] see figure 1 , the present invention includes ice melting data processing and control module, bipolar load isolating switch 4, AC ice melting current limiting device 3, AC ice melting current limiting device 3 includes ice melting resistance box, ice melting capacitor box, air cooling or water cooling device , Control protection device, ice-melting resistance box is used to adjust the ice-melting current value, adopts sealed type.

[0040] The AC current-limiting device 3 for melting ice is installed in the partition station, the downlink catenary 2 is connected to the integrated grounding box 10, and a grounding isolation switch 11 is arranged between them, and the uplink and downlink catenary 1 and 2 pass through the bipolar load of the partition station at the end of the power supply arm The isolating switch 4 is connected in serie...

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PUM

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Abstract

The invention relates to an ice melting method for overhead contact system of an electrified railway and an ice melting system thereof. Major hazards of ice coating of the overhead contact system include accidents that pantograph of electric locomotives can not contact with a contact line to obtain current, contact system brandishes, even falls of piles and collapses, and the like. In the ice melting method and the ice melting system thereof, an upper overhead contact system and a lower overhead contact system are connected in series to form a circuit by a section post, AC or DC ice melting current is input at the head end of the circuit, ice coating thickness and safe ice melting current value are obtained by analyzing meteorological and overhead contact system parameters with an ice coating data processing and control module, and then the ice melting system is controlled to output the ice melting current at the end of the circuit, thus ice is molten by Joule heat generated by the current. In the ice melting method and the ice melting system thereof, ice attached to the contact line is molten by joule heat, and compared with the deicing modes of artificial knock and the like of operation departments, the ice melting method and the ice melting system thereof greatly improve deicing efficiency, thus reducing the effect on railway transport, and eliminating damages of external force on the contact line.

Description

technical field [0001] The invention relates to an ice-melting method and an ice-melting system for an electrified railway catenary. technical background [0002] Catenary icing belongs to the category of component atmospheric icing, which is a natural adhesion and icing phenomenon that occurs when the air is highly supersaturated and contains supercooled water droplets, and the wire temperature is equal to or slightly higher than the ambient temperature. Due to the differences in micro-meteorology, micro-topography and temperature, supercooled water content in the air, and wind speed, catenary icing can be divided into rain rime, mixed rime, rime, and hoarfrost according to different classification methods. Rain rime and mixed rime mainly affect the catenary. [0003] When the catenary is covered with ice, the main hazards are that the pantograph of the electric locomotive cannot contact the catenary line to take the current, the catenary dances, and even the accidents suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H02G1/02B60M1/12
Inventor 宫衍圣李会杰刘和云彭文盛李强王祖峰陈学光田志军李晋何廷文王继来黄文勋
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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