A wiring method of a triangular three-dimensional coil core on-load capacity-adjusting voltage-regulating transformer

Abstract

The invention discloses a method for wiring an on-load, capacity-regulating and voltage-regulating transformer with a triangular three-dimensional reel iron core; A, B, C-phase high-voltage lines are wired around a coil and are connected to high-voltage wiring terminals of different phases of an on-load, capacity-regulating and voltage-regulating tap switch; a B-phase low-voltage line is wired from the upper space of an upper iron clamping part and then connected to low-phase wiring terminals of different phases of the on-load, capacity-regulating and voltage-regulating tap switch; when being not less than a safe electrical distance, the A-phase and C-phase low-voltage lines are respectively connected to low-voltage wiring terminals of different phases of the on-load, capacity-regulating and voltage-regulating tap switch; A, B, C-phase low-voltage lines are connected end to end, then leaded to the upper space of the triangular three-dimensional reel iron core by means of the low-voltage wires and connected to the bottom of an O-phase ceramic bottle. Compared with the prior art, the wiring manner of the high-voltage lines and the low-voltage lines has the advantages of being rational in design, saved in space, good in mechanical performance, high in stability, low in unbalance rate of three-phase resistor, attractive in wiring, saved in raw material and cost, convenient in dismounting and the like.

Description

technical field [0001] The invention relates to a wiring method of a transformer, in particular to a wiring method of a triangular three-dimensional wound iron core on-load capacity-adjusting voltage-regulating transformer. Background technique [0002] For a long time, my country's rural power grid has the characteristics of scattered load, strong seasonality, low average load rate and large loss. my country's rural electricity consumption is mainly concentrated in summer and two seasons, and the remaining seasons are mainly used for lighting. In the busy farming season, the transformer overload operation phenomenon is serious, and in the off-season of electricity consumption, the load rate is low, and "big horse-drawn carts" appear again. Phenomenon. Non-excitation capacity regulating transformers have also been used in rural areas, but there are some disadvantages. The use of non-excitation capacity regulating transformers cannot change the transformer capacity in a time...

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Problems solved by technology

[0003] Aiming at the inconvenience of transformer use, operation and maintenance caused by manual operation during the transformation process of the "big horse-drawn cart" phenomenon in the existing technology, as well as unbalanced three-phase power supply, large loss, large line loss, high noise, and high cost Advanced problem, the present invention provides a triangular three-dimensional winding iron core on-load capacity regulating voltage regulating transformer wiring method, which can realize automatic control and eliminate the phenomenon of "big horse and small cart" in the power grid

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