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An intelligent electric phase splitting device for AC electrified railway

An electrified railway and electrical phase separation technology, which is applied in power lines, transportation and packaging, overhead lines, etc., can solve the problems of locomotives with electrified intrusion into separate phases, loss of power in the neutral area, affecting the safety of the traction power supply system and the running order, etc. Accurate control of switching time, improve reliability, and avoid interference between devices and human beings

Active Publication Date: 2017-11-07
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the additional train position detection device must be detected accurately and work reliably, otherwise it will lead to accidents such as power loss in the neutral zone, breakage of the locomotive when it is live, and affect the safety and driving order of the traction power supply system

Method used

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  • An intelligent electric phase splitting device for AC electrified railway
  • An intelligent electric phase splitting device for AC electrified railway

Examples

Experimental program
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Effect test

Embodiment 1

[0020] see figure 1 , the AC electrified railway locomotive intelligent electric phase-splitting device of the present invention comprises a first impedance 4, a second impedance 5, a first switch 6, a second switch 7 and a controller 8; after installing a current sensor in the first switch 6, it is connected with the first One impedance 4 is connected in parallel, and a current sensor is installed in the second switch 7 and connected in parallel with the second impedance 5; one end of the first switch 6 is connected to the first power supply arm 1 and a voltage sensor, the first switch 6 is installed on this node The other end of the second switch 7 is connected to the phase separation area 3 and a voltage sensor is installed on this node, and the other end of the second switch 7 is connected to the second power supply arm 2 and a voltage sensor is installed on this node. voltage sensor.

[0021] The voltage and current sensors installed in the above device and the control s...

Embodiment 2

[0023] see figure 2 , the AC electrified railway locomotive intelligent electrical phase splitting device of the present invention includes a first switch 6, a second switch 7, a controller 8, a first transformer 9 and a second transformer 10; wherein, the first transformer 9 includes a first high voltage winding 9a and first low-voltage winding 9b, the second transformer 10 includes a second high-voltage winding 10a and a second low-voltage winding 10b, the first switch 6 is connected to both ends of the first low-voltage winding 9b, and the second switch 7 is connected to the second low-voltage winding 9b. Both ends of the winding 10b are connected; the first high voltage winding 9a is respectively connected to the first power supply arm 1 and the phase splitting area 3, and the second high voltage winding 10a is connected to the second power supply arm 2 and the phase splitting area 3 respectively. The required current sensor and voltage sensor can be installed on the firs...

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Abstract

The invention discloses a kind of AC electrified railway intelligent neutral section device. It consists of a first switch which connects the first power supply arm to the neutral section and its parallel impedance, a second switch which connects the second power supply arm to the neutral section and its parallel impedance, current and voltage sensors detecting the first switch and current and voltage sensors detecting the second switch etc. The device can automatically identify the train's pantograph position through the voltage information at both ends of the first switch and the second switch and current information flowing from the first switch and the second switch, and automatically close or open the first switch and the close or open the second switch to make the neutral section obtain or cut off the electric energy of power supply arm according to the identified location of the pantograph. The circuit structure of the switch and its parallel impedance can be replaced by the circuit structure of connecting two ends of a step-down transformer and its low-voltage winding to a switch. There is no need to install the train position detection device, with advantages of a simple structure and convenience of use and maintenance.

Description

technical field [0001] The invention relates to the field of electrified railway over-phase separation technology, in particular to an intelligent electric phase separation device for AC electrified railway. Background technique [0002] The catenary of electrified railways in many countries, including my country, adopts the power supply mode of segmental commutation, and there is a non-electric catenary between adjacent two-phase power supply catenaries, which is called a phase-splitting area or a neutral area. When the train enters and exits the phase separation area, it is easy to generate overvoltage phenomenon, which sometimes endangers the safety of the train operation; and when running in the phase separation area, it will affect the running speed of the train. [0003] In the existing ground continuous power automatic phase separation schemes, such as the "ground device conversion automatic phase separation scheme" and "column type automatic phase separation scheme",...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M3/04
CPCB60M3/04B60M1/18
Inventor 郑琼林杜玉亮杨晓峰杨景熙游小杰吴命利
Owner BEIJING JIAOTONG UNIV
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