Capacity-regulating transformer

A transformer and capacity adjustment technology, which is applied in the field of capacity adjustment transformers, can solve the problem of high no-load loss, achieve the effects of strong ability to withstand unbalanced loads, reduce harmonic components, and good economy

Active Publication Date: 2018-05-22
ZHEJIANG BOTHWELL ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these occasions, if the traditional capacity adjustment method is adopted, the no-load loss at low capacity will be very high

Method used

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] A capacity-regulating transformer, including a capacity-regulating switch for switching between large and small capacities of the transformer, each phase of the transformer includes a low-voltage winding on the low-voltage side and a high-voltage winding on the high-voltage side respectively; the capacity-regulating switch can be Connect the three-phase windings of the transformer at the same time, and each phase can also be provided with a capacity adjustment switch; specifically, when the capacity adjustment switch drives the three-phase windings to be respectively in the Dy connection mode, the transformer capacity is in a high-capacity state; the capacity adjustment ...

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Abstract

The invention discloses a capacity-regulating transformer. The capacity-regulating transformer comprises a low-voltage winding and a high-voltage winding; in a high-capacity state, the windings are ina Dy linkage mode; in a small-capacity state, the windings are in a Dy linkage mode; in a Dy / Dy capacity-regulating conversion mode, the no-load loss ratio of high capacity to small capacity is 4 to1; and compared with other capacity-regulating conversion mode, the no-load loss in small capacity is lower, so that the capacity-regulating transformer is particularly suitable for occasions with high power utilization difference between peak and valley.

Description

technical field [0001] The invention belongs to the technical field of transformer equipment in the electric power industry, and in particular relates to a capacity regulating transformer. Background technique [0002] In occasions where there is a large difference between peak and valley power consumption, such as office buildings and other office spaces, commercial cities, development zones and tourist areas, etc., there are obvious time-period loads, and the load rate during working hours is high, while the load rate during non-working hours is very low. ; In order to curb the frequent occurrence of winter smog in the north, some areas have vigorously promoted the conversion of coal to electricity, and introduced the "peak and valley electricity price subsidy policy" from 9:00 pm to 6:00 am, making the peak load rate of electricity consumption in winter as high as 70-85% , and the peak load rate of electricity in summer may only be 20-30%, and the load rate in spring and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/02H01F27/40
CPCH01F27/40H01F29/02H01H9/0038
Inventor 吴正文姜方军
Owner ZHEJIANG BOTHWELL ELECTRIC
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