500kV radial split transformer

Abstract

The invention relates to a 500kV radial split transformer. The 500kV radial split transformer is provided with an oil tank main body, a high-voltage sleeve, a low-voltage sleeve, an oil storage cabinet, a heat sink, an on-load tap switch and a high-voltage outgoing line box, wherein the oil tank main body is formed from an upper section of oil tank and a lower section of oil tank, an arrangement structure of iron cores, a voltage stabilization coil, a low-voltage coil I, a high adjustable coil, a high-voltage coil and a low-voltage coil II are arranged in a transformer body, the iron cores are arranged in the upper section of oil tank and the lower section of oil tank, the voltage stabilization coil, the low-voltage coil I, the high adjustable coil, the high-voltage coil and the low-voltage coil II sleeve each iron core, a high-voltage neutral point is used for adjusting a voltage, an external winding radially gets out, the other windings get out of an upper end part and a lower end part, and meanwhile, a high-voltage end is connected with a tail end of the high-voltage sleeve through a copper weaving line. By the 500kV radial split transformer, the problem of relatively large split coefficient can be solved, the product is relatively simple in structure, high in short-circuit resistant capability and safe and reliable in performance, and long-term qualified running can be fully ensured.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a 500kV radial split transformer. Background technique [0002] A split-winding transformer refers to a multi-winding power transformer in which each phase consists of one high-voltage winding and two or more low-voltage windings of the same voltage and capacity. The normal power transmission of the split transformer is only carried out between the high and low voltage windings, and it has the function of limiting the short-circuit current in the event of a fault. [0003] Usually, the low-voltage winding is used as the split winding. At present, most split transformers use the axial split structure of the low-voltage coil. When the split coefficient is large, such as greater than 4, the axial split structure of the low-voltage winding of the split transformer cannot meet this parameter value, and the radial split must be used. Structure, 500kV high voltage level radial spl...

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Problems solved by technology

[0003] Usually, the low-voltage winding is used as the split winding. At present, most split transformers use the axial split structure of the low-voltage coil. When the split coefficient is large, such as greater than 4, the axial split structure of the low-voltage winding of the split transformer cannot meet this parameter value, and the radial split must be used. structure, 500kV high voltage level radial split transformer has not been reported

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