Section post structure applied to alternating-current double-tracked electrified railway bilateral power supply mode

A technology for electrified railways and power supply methods, which is applied in the direction of AC network circuits, power lines, circuit devices, etc., and can solve problems that have not yet been applied and are difficult to overcome.

Pending Publication Date: 2020-07-17
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bilateral power supply technology is widely used in foreign countries (Russia, Germany, Eastern Europe, etc.). Beyond integration, this technology has not yet been applied in domestic AC electrified railways

Method used

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  • Section post structure applied to alternating-current double-tracked electrified railway bilateral power supply mode
  • Section post structure applied to alternating-current double-tracked electrified railway bilateral power supply mode
  • Section post structure applied to alternating-current double-tracked electrified railway bilateral power supply mode

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] refer to figure 1 , when the train passes through the articulated electric split phase of the anchor section, the pantograph only contacts the non-electric neutral section catenary during the process from the center column 4 to the second center column 8, and the train will lose power for a short time, resulting in power loss and Speed ​​loss, when the electric separation phase is set in the section of the long ramp, it may cause accidents such as stop and slow slope in severe cases. Therefore, the setting of the electric separation phase is often an important technology in the electrified railway with long slopes problem.

[0020] refer to figure 2 , in order to solve the power supply problem of double-track electrified railways with large slopes in mountainous areas, on the basis of maintaining the parallel power supply at the end of the pow...

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PUM

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Abstract

The invention discloses a section post structure applied to an alternating-current double-tracked electrified railway bilateral power supply mode. The functions of parallel power supply of a power supply arm tail end contact net under the normal condition and cross-section power supply of adjacent traction substations under the condition that traction substations fail and quit operation can be maintained. Uplink and downlink contact network parallel power supply and left and right side power supply arm bilateral power supply are realized by adopting a circuit breaker mode in a section post; agroup of voltage transformers, lightning arresters and a 27.5 kV feeder line are respectively added to a left power supply bus and a right power supply bus. The voltage transformer is used as a newlyadded feeder line power supply side voltage detection device of buses at two sides. The lightning arrester serves as a voltage transformer overvoltage protection device, the two newly-added feeder lines, the left side power supply arm contact net and the right side power supply arm contact net are in-phase power supplies respectively, the two newly-added feeder lines are used for supplying power to joint type electric split-phase uncharged neutral sections between two adjacent traction substations and at the tail end of the power supply arm, and the two newly-added feeder lines can be standbyfor each other.

Description

technical field [0001] The invention relates to a traction power supply system for an AC electrified railway, in particular to a partition structure applied to a double-track bilateral power supply mode. Background technique [0002] All electrified railways in my country adopt AC system and unilateral power supply mode. For double-track electrified railways, partition substations are set up between two adjacent traction substations and at the end of the power supply arm to realize parallel power supply at the end of the power supply arm and traction substation under normal circumstances. The adjacent traction substation supplies power across districts under the condition of out-of-operation due to faults. Unilateral power supply means: between two adjacent traction substations, there is an electric phase splitting device at the end of the power supply arm for insulation division, the catenary power supply partition is supplied with electric energy from one side by the tracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M1/13B60M1/20B60M3/00H02J3/00H02J3/04
CPCB60M1/13B60M1/20B60M3/00H02J3/04
Inventor 邓云川林宗良李剑杨佳刘涛智慧刘孟恺
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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