Polygonal solid volume iron core load-regulating capacitance-regulating transformer

Abstract

The invention belongs to the technical field of transformers, and particularly relates to a polygonal solid volume iron core load-regulating capacitance-regulating transforme, which comprises a polygonal oil tank, wherein the polygonal oil tank comprises a rectangular shell and a trapezoidal shell, and the rectangular shell and the trapezoidal shell are integrally formed; the three-dimensional coiled iron core is a triangular three-dimensional coiled iron core, and the triangular three-dimensional coiled iron core is arranged at the joint of the rectangular shell of the polygonal oil tank andthe trapezoidal shell; the three-phase three-component coil is wound on the three-dimensional coiled iron core; the load-regulating capacitance-regulating switch is arranged in the rectangular shell of the oil tank at one side of the three-dimensional coiled iron core; And the accessory and the three-phase three-winding coil are connected with a load-carrying capacity-regulating switch through anaccessory. The transformer can change the rated operation capacity mode and the voltage tap conversion according to the actual load and voltage condition, reduce the transformer's own no-load loss, achieve the voltage adjustment, improve the economic operation level of the distribution board area, and improve the supply voltage quality.

Description

technical field [0001] The invention belongs to the technical field of transformers, in particular to a polygonal three-dimensional wound core on-load capacity-regulating and voltage-regulating transformer. Background technique [0002] Distribution transformers are the core and main loss equipment of the distribution network. At present, there are more than 10 million distribution transformers in operation in the country. With the rapid development of my country's social economy, the power consumption load of the distribution network has increased sharply, and it has obvious seasonal and periodic power consumption characteristics. Large and three-phase loads are seriously unbalanced. In particular, the rural power grid has scattered load, strong seasonality, low average load rate, and the gradual increase of rural electrical equipment, and transformer overload operation will occur during busy farming seasons. [0003] The use of conventional non-excitation voltage regulati...

AI Technical Summary

Problems solved by technology

The three-phase magnetic circuit of this type of transformer is not completely symmetrical, the noise is high, and the ability to resist sudden short-circuit is poor. The circular cross-section of the iron core can ensure that the changes of different gears are qualified, resulting in waste of materials.

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