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Body structure of a railway traction transformer

A railway traction and transformer technology, which is applied in the field of transformers, can solve the problems of large line loss and complex substation equipment, and achieve the effects of reducing investment costs, strong over-excitation operation ability, strong resistance to frequent short-circuit and overload operation

Active Publication Date: 2011-12-14
TEBIAN ELECTRIC APP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a reliable insulation strength and strong short-circuit resistance, which can be applied to 330kV single-phase Body structure of railway traction transformer for traction transformer

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  • Body structure of a railway traction transformer
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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings.

[0020] The following examples are non-limiting examples of the invention.

[0021] Such as figure 1 As shown, the body structure of the railway traction transformer of the present invention includes an iron core 1 , a low-voltage coil 3 and a high-voltage coil 2 wound on the iron core 1 . In this embodiment, the high-voltage coil adopts a 330kV high-voltage coil. In order to make the electric field evenly distributed, the body structure of the present invention adopts a fully insulated design.

[0022] The head end 4 of the high-voltage coil adopts entanglement or insertion shielding winding, the high-voltage coil end 5 also adopts entanglement or insertion shielding winding, and the other coil segments of the high-voltage coil 2 adopt entanglement or insertion shielding or continuous winding; The tap section outlet 6 is set at the longitudi...

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Abstract

The invention discloses a body structure of a railway traction transformer, which comprises an iron core (1), on which a low-voltage coil (3) and a high-voltage coil (2) are wound, and the high-voltage coil is sequentially provided with end coils (7) , the iron yoke insulation layer (9), the head end of the high-voltage coil (4) adopts tangled or inserted shielding winding, the high-voltage coil end (5) adopts tangled or inserted shielding winding, and the other coil sections of the high-voltage coil adopts tangled Type or plug-in shielded or continuous winding. The body structure has reliable insulation strength and strong short-circuit resistance, and can be applied to 330kV single-phase traction transformers, thereby solving the problems of large line loss and complex substation equipment of 110kV and 220kV traction transformers.

Description

technical field [0001] The invention belongs to the technical field of transformers, and relates to a body structure of a transformer, in particular to a body structure of a single-phase railway traction transformer. Background technique [0002] The voltage of my country's railway traction lines to the track is 27.5kV, and the power supply voltage of the three-phase power system that supplies power to the traction lines is usually 110kV or 220kV. At present, my country's railway traction lines mainly use 110kV voltage level traction transformers, and some of them are 220kV voltage level traction transformers. The line losses of 110kV and 220kV traction transformers are very large, and the operating costs are very high. As my country's requirements for energy conservation and environmental protection continue to increase, the construction of electrified railways has increasingly stringent requirements for operating line losses. Therefore, a traction transformer that directl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28H01F27/30H01F27/36H01F27/32
Inventor 高德满孙建新徐寨新
Owner TEBIAN ELECTRIC APP CO LTD