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Cophase supply power mutual feedback experiment system for electrified railways

A technology of electrified railway and power mutual feedback, which is applied in the direction of electrical components, output power conversion devices, reactive power adjustment/elimination/compensation, etc. The effect of less electricity, high capacity utilization and advanced technology

Active Publication Date: 2016-03-23
CHENGDU SHANGHUA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its existence seriously restricts the development of high-speed passenger transport and heavy-duty freight transport

Method used

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  • Cophase supply power mutual feedback experiment system for electrified railways
  • Cophase supply power mutual feedback experiment system for electrified railways

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Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like figure 1 As shown, an electrified railway co-phase power supply power mutual feeding experiment system includes main transformer 1 TT1 and main transformer 2 TT2 using SCOTT wiring, isolation transformer TR using Yd wiring, AC-DC-AC converter-ADA1, AC-DC-AC The second ADA2, the grid power is connected to the three-phase AC bus BT through the three-phase incoming switch K and the isolation transformer TR, and the primary sides of the main transformer 1 TT1 and the main transformer 2 TT2 are respectively connected to the three-phase AC bus BT through the three-phase switch K1 connected, the grid power supply is connected to the three-phase AC bus BT through the three-phase incoming switch K and the isolation transformer TR, and the secondary side of the main transformer TT1 and the main transformer 2 TT2 are composed of M-seat winding...

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Abstract

The invention discloses a cophase supply power mutual feedback experiment system for electrified railways, and the technical field of track traffic traction power supply. The T base winding of a main transformer I TT1 is connected to the input end of an AC-DC-AC converter ADA1 through a single-phase switch K2, and the T base winding of a main transformer II TT2 is connected to the input end of an AC-DC-AC converter ADA2 through the single-phase switch K2; the output end of the AC-DC-AC converter ADA1 is connected to the M base winding of the main transformer II TT2 through a single-phase switch K3, a single-line bus II BS2 and a single-line switch K2, and the output end of the AC-DC-AC converter ADA2 is connected to the M base winding of the main transformer I TT1 through the single-phase switch K3, a single-line bus I BS1 and the single-line switch K2; one end of each of the secondary side M base windings of the main transformer I TT1 and the main transformer II TT2 is grounded respectively, and one end of each of the output ends of the AC-DC-AC converter ADA1 and the AC-DC-AC converter ADA2 is grounded respectively. The system is mainly used for cophase supply power mutual feedback experiments.

Description

technical field [0001] The invention relates to the technical field of rail transit traction power supply. In particular, it relates to the experimental technology of the same-phase power supply AC-DC converter for electrified railways. Background technique [0002] The traction power supply system of my country's electrified railway adopts 25kV single-phase power frequency AC power supply, and there is an electric phase splitting device at the outlet of the substation and the outlet of the divisional station. Its existence seriously restricts the development of high-speed passenger transport and heavy-duty freight transport. In order to cancel the electrical phase separation and improve the power quality, my country is vigorously developing the same phase power supply. [0003] The AC-DC-AC converter ADA used in the same-phase power supply compensation device uses two "back-to-back" single-phase converters to realize the power conversion between different phase voltage po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/18H02M5/00G01R31/00
CPCY02E40/30
Inventor 解韶峰郭育华李群湛郭锴
Owner CHENGDU SHANGHUA ELECTRIC CO LTD