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Traction substation with energy storage type power regulator

A technology for power conditioners and traction substations, applied in the field of traction substations, can solve problems such as the influence of power supply reliability, and achieve the effect of improving the three-phase voltage balance.

Pending Publication Date: 2017-09-22
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the switching process of the main and standby power supplies, in order to avoid the inrush current, a certain delay time is generally set, which will adversely affect the power supply reliability of the electric locomotive load

Method used

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  • Traction substation with energy storage type power regulator

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Comparison scheme
Effect test

Embodiment 1

[0020] like figure 1 As shown, the traction substation with the energy storage type power conditioner in this embodiment includes a V / v traction transformer 1 and a DC power supply line 2, the high-voltage port of the V / v traction transformer 1 is connected to the power grid, and the V / v traction transformer 1 Low pressure ports include α phase arm, β phase supply arm and ground terminal, α The phase power supply arm and the ground terminal are connected to one end of the DC power supply line 2, β The phase power supply arm and the ground terminal are connected to the other end of the DC power supply line 2, α phase arm, β An energy storage type power conditioner 3 is connected between the phase power supply arms. The traction substation with the energy storage type power regulator in this embodiment can not only balance the power supply current of the traction transformer, but also realize the uninterrupted supply of the electric locomotive 4 (load) through the DC power ...

Embodiment 2

[0030] In this embodiment, the energy storage type power conditioner 3 includes α Phase two-winding autotransformer 31, β Phase two-winding autotransformer 33 and energy storage type chain power adjustment unit 32, energy storage type chain power adjustment unit 32 is connected to α Phase two-winding autotransformer 31, β Between the phase double-winding autotransformers 33, the energy storage type chain power adjustment unit 32 is composed of an energy storage type chain power adjustment branch, and the energy storage type chain power adjustment branch is sequentially connected in series. α Phase single-phase full-bridge AC-DC converter 321, α Phase bidirectional DC-DC converter 322, energy storage device 323, β phase bidirectional DC-DC converter 324, β Phase single-phase full-bridge DC-AC converter 325 constitutes, and α The outlet terminals of the single-phase full-bridge AC-DC converter 321 and α The outlet terminal corresponding to the low-voltage winding of the ph...

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Abstract

The invention discloses a traction substation with an energy storage type power regulator. The traction substation comprises a V / v traction transformer (1) and a direct current power supply line (2), wherein a high voltage port of the V / v traction transformer (1) is connected with a power grid, a low voltage port of the V / v traction transformer (1) comprises an alpha phase power supply arm, a beta phase power supply arm, and a grounded end, the alpha phase power supply arm and the grounded end are connected with one end of the direct current power supply line (2), the beta phase power supply arm and the grounded end are connected with the other end of the direct current power supply line (2), and an energy storage type power regulator (3) is connected between the alpha phase power supply arm and the beta phase power supply arm. The traction substation can balance transformation of traction into the power supply current, and also can keep powering the electric locomotive load constantly in switch between a master power supply and a standby power supply.

Description

technical field [0001] The invention relates to a power system, in particular to a traction substation with an energy storage type power conditioner. Background technique [0002] V / V wiring traction transformer has the advantages of high capacity utilization, strong short-circuit resistance, convenient and reliable operation, etc. Therefore, it is a relatively common traction transformer wiring method used by electrified railways in my country. However, due to the asymmetry of the electric locomotive load carried by the two-phase power supply arm of the traction transformer, there will be a certain imbalance between the low-voltage two-phase current and the high-voltage three-phase current of the traction transformer, which will also affect the grid voltage. Power quality problems such as the unbalanced degree will cause certain negative impacts. In addition, in order to improve the reliability of power supply, traction substations generally adopt a dual power supply mode....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H02J9/06H02J3/32
CPCH02J3/26H02J3/32H02J9/061Y02E40/50Y04S20/20Y02B70/30
Inventor 张坤张可人罗潇杨成肖涛申浩平
Owner STATE GRID CORP OF CHINA
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