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No negative-sequence power supply system for the whole process of high-speed passenger dedicated line

A technology of power supply system and passenger dedicated line, applied in the direction of power lines, transportation and packaging, vehicle components, etc., can solve the problems of no external power supply and the combination of internal power supply of EMUs, etc., to eliminate adverse effects, save construction costs, and save circuit breakers and neutral insulator effect

Inactive Publication Date: 2016-06-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still room for innovation in the research field of in-phase power supply, and this achievement does not combine the external power supply and the internal power supply of the EMU well.

Method used

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  • No negative-sequence power supply system for the whole process of high-speed passenger dedicated line
  • No negative-sequence power supply system for the whole process of high-speed passenger dedicated line
  • No negative-sequence power supply system for the whole process of high-speed passenger dedicated line

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Embodiment Construction

[0044] Below in conjunction with the accompanying drawings, the upper and lower double-line operation power supply system of the present invention, and the new structure of the external power supply and internal power supply system, will be further described.

[0045] External power supply:

[0046] The original external power supply system, see figure 2 , the three-phase power output by the power plant is boosted or the high-voltage power output by the three-phase high-voltage public grid is stepped down, and transformed into 110KV or 220KV special high-voltage power (110KV for 250km / h, 110KV for 350km / h 220KV), which is transmitted to the dedicated three-phase high-voltage power grid. It is transmitted from the dedicated three-phase high-voltage grid to the primary side of the traction transformer in the uplink traction substation, and the secondary side of the traction transformer 27.5KV (rated voltage is 25KV) is transmitted to a single-phase catenary.

[0047] The exte...

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Abstract

The invention discloses a whole-journey no-negative sequence power supply system of a highway passenger transport line. The main content of the system is to change a special external single-phase power supply net to a double-phase power supply net. A single-phase pantograph is changed to a double-phase pantograph; internal received electricity pantograph is divided into two independent, symmetric and basic units of TUB1 and TUB2 as internal power and auxiliary power supply. The system is specifically suitable for CRH3 type and CRH2 type eight-carriage grouped motor train units, and is also suitable for CRH3 type 16-carriage and CRH2 type 16-carriage regrouped motor train units. As the system has no need to arrange a main circuit breaker of over-split phase or a neutral section of over-split phase, an over-split phase structure has no need to be arranged on power supply net circuits, and negative-sequence current is not caused in a three-phase high-voltage power supply net.

Description

Technical field: [0001] The power supply system for high-speed passenger train dedicated line is the power source to ensure the safe, stable and efficient operation of high-speed trains. It is responsible for safely obtaining power from the power supply network and providing stable, continuous and reliable power supply to EMUs. It is one of the important infrastructures of high-speed lines. one. The invention relates to a traction power supply system for high-speed trains, and is especially suitable for the pantograph-catenary power supply systems of CRH3 and CRH2 EMUs. Background technique: [0002] The power supply system of electrified high-speed railway consists of two parts: external power supply system and internal power supply system. [0003] External power supply system: the voltage output by the power plant is transformed into a three-phase high voltage A, B, and C for railways (110KV for ordinary electric railways and 110KV for high-speed electric railways) throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M3/00
Inventor 宋玉泉管晓芳宋家旺
Owner JILIN UNIV
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