220 KV single phase railway traction transformer structure

Abstract

This invention relates to a 220kv single-phase railway traction transformer structure composed of an iron core, a high voltage coil and a low voltage coil, in which, the voltage of the head and tail of the high voltage coil is 220kv connecting to 220kv network directly, both of the head and tail apply the interleaved equal turn winding, other line segments are in continuous winding, the outlet of the tapping is set vertically to the 1 / 2 part of the high voltage coil.

Description

Technical field: [0001] The invention relates to a traction transformer, in particular to 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, the traction transformers used in my country's railway traction lines are all 110kV voltage level, and the line loss of the 110kV level traction transformer is very large. At present, the 220kV railway traction transformer is used to transform the 220kV voltage level into a 110kV voltage with an ordinary power transformer, and then connect the 110kV voltage level traction transformer to output a 27.5kV voltage, and the operating cost is very high. With the continuous improvement of my country's railway electrification level, the technical level of electrified railways is also continuously improved,...

AI Technical Summary

Problems solved by technology

At present, the 220kV railway traction transformer is used to transform the 220kV voltage level into a 110kV voltage with an ordinary power transformer, and then connect the 110kV voltage level traction transformer to output a 27.5kV voltage, and the operating cost is very high.

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