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Icing preventing and ice melting method for high speed railway and system for realizing method

An ice-melting method and high-speed railway technology, applied in the installation of cables, electrical components, overhead lines, etc., can solve the problems of catenary system paralysis, evolution into social unrest events, affecting social stability, etc., to ensure safety and system operation. Convenient and flexible effects

Inactive Publication Date: 2014-09-17
CHENGDU SOUTHWEST JIAOTONG UNIV XUJI ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unexpected ice and snow in winter can almost paralyze the catenary system and make the railway unable to operate (such was the case with the ice disaster in the south in early 2008). cause social unrest and affect social stability

Method used

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  • Icing preventing and ice melting method for high speed railway and system for realizing method
  • Icing preventing and ice melting method for high speed railway and system for realizing method
  • Icing preventing and ice melting method for high speed railway and system for realizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 , figure 2 As shown, this embodiment is mainly designed for the needs of ice melting, and the anti-icing and ice-melting device 1 is installed in the traction substation:

[0056] The anti-icing and ice-melting device 1 is installed in the traction substation, and uses the uplink and downlink contact lines to form an ice-melting circuit. At this time, the phase separation where the traction substation is located is separately included in the anti-icing circuit (such as figure 1 shown) and the two separate phases of the substation and the divisional substation are included in the ice-melting circuit (such as figure 2 Shown) two operating modes, the latter operating mode can reduce the blind area of ​​the ice-melting circuit.

[0057] Multiple circuit breakers and / or isolating switches are installed in the ice-melting circuit to realize opening, closing and control of the circuit. For details, see the circuit diagram of the anti-icing system.

[005...

Embodiment 2

[0060] Such as image 3 , Figure 4 As shown, this embodiment is also designed for the needs of ice melting, and the anti-icing and ice-melting device 1 is installed in the partition:

[0061] Use up / down lines and steel rails to form an ice-melting circuit. At this time, the phase separation where the traction substation is located is separately included in the anti-icing circuit (such as image 3 shown) and the two separate phases of the substation and the divisional substation are included in the anti-icing circuit (such as Figure 4 As shown,) two operating modes, the latter operating mode can reduce the blind area of ​​the ice-melting circuit.

[0062] by Figure 4 As an example, explain the principle of circuit conduction. If the catenary has been frozen due to bad weather or other reasons, it is necessary to melt the ice on the catenary. You can close 2QF, 2QS, 9QS, 11QS, 11QF to melt the ice on the uplink separately, or close 1QF and 1QS respectively. , 10QS, 12Q...

Embodiment 3

[0065] Such as Figure 5 As shown, this embodiment is mainly designed for online anti-icing, and the anti-icing circuit when the anti-icing and ice-melting device 1 is installed in a partition:

[0066] Close the 7QF and 8QF circuit breakers of the division respectively to realize the online anti-icing of the uplink or downlink. Combined with environmental conditions, when there is no need for high current offline ice melting, online anti-icing of catenary can be realized. According to the parameters obtained by the ice melting judgment system, the gear of the anti-icing device is adjusted to the preset online anti-icing gear of the catenary, so that the catenary can obtain the required anti-icing current to prevent the catenary from being covered with ice. At this time, the locomotive needs to run according to the preset operation mode (limiting the number of trains or limiting the speed of trains).

[0067] The anti-icing and ice-melting device 1 used in this embodiment is...

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Abstract

The invention discloses an icing preventing and ice melting method for a high speed railway. The method comprises the following steps of: 1, establishing the icing preventing and ice melting loop of a catenary; 2, adjusting the impedance of the icing preventing and ice melting loop and controlling icing preventing and ice melting current to prevent contact lines and carrier cables from being burnt by the excessive current of the catenary; and 3, implementing icing preventing and ice melting control. The invention also comprises an icing preventing and ice melting system for realizing the method. The system comprises the icing preventing and ice melting loop and an icing preventing and ice melting device (1). The invention complies with the icing preventing and ice melting combined principle of primarily preventing icing by using alternating current on line and secondarily melting ice off line, and grounding resistors or inducers are additionally connected at a power substation or a section post, so that certain alternating current passes through the catenary, icing is prevented by heat which is generated by the current, and the technical problem that a mechanical deicing mode is not suitable for the high speed railway any more is solved.

Description

technical field [0001] The invention relates to the field of electrified railways, in particular to an on-line or off-line anti-icing method suitable for high-speed railway catenary, and the invention also includes a system for realizing the above-mentioned method. Background technique [0002] In winter in the north and south of my country, due to the combined effect of air temperature, air humidity and wind speed, there is an icing phenomenon in which ice is formed from liquid water. For electrified railways, icing is a natural disaster, which will cause the tower topple, ice-covered conductors to dance or break, and at the same time, due to the icing of the catenary, it will cause the pantograph to fail to take current normally, and even cause damage to the pantograph Or fracture, seriously affecting the safe and punctual operation of trains, for high-speed railways with a speed of more than 300km / h, this problem is even more serious, and must be highly valued. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/12H02G7/16
Inventor 钟选明陈小川王牣韩正庆
Owner CHENGDU SOUTHWEST JIAOTONG UNIV XUJI ELECTRIC
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