Unlock instant, AI-driven research and patent intelligence for your innovation.

Energy-saving device and energy-saving system for three-phase transformer

A technology of three-phase transformers and energy-saving devices, which is applied in the direction of transformers, transformer/inductance parts, variable transformers, etc., and can solve the problem of large no-load loss

Inactive Publication Date: 2017-05-10
BEIJING PINGKAI INTELLIGENT ELECTRIC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an energy-saving device and energy-saving system for three-phase transformers, so as to improve the problem of large no-load loss of three-phase transformers in the prior art, and effectively reduce the no-load loss of three-phase transformers. load loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energy-saving device and energy-saving system for three-phase transformer
  • Energy-saving device and energy-saving system for three-phase transformer
  • Energy-saving device and energy-saving system for three-phase transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] An embodiment of the present invention provides an energy-saving device for a three-phase transformer, including at least three energy-saving transfer switches, wherein one energy-saving transfer switch is a single-pole single-throw switch, used to control the high-voltage side incoming line phase of the three-phase transformer On-off of one-phase line;

[0044] The other two energy-saving transfer switches are single-pole double-throw switches, which are used to separately control the on-off of the two-phase lines in the low-voltage side outgoing phase of the three-phase transformer, and when the two-phase lines are disconnected, the knife head of the single-pole double-throw switch It is placed on another phase line except the two-phase line in the outgoing line phase of the low-voltage side.

[0045] An embodiment of the present invention provides an energy-saving device for a three-phase transformer. Three energy-saving switches in the energy-saving device can be us...

Embodiment 2

[0052] Based on the first embodiment above, the embodiment of the present invention provides a multifunctional energy-saving device for three-phase transformers. In addition to the above-mentioned energy-saving switch, the energy-saving device also includes a controller, which is connected to the energy-saving switch respectively. The single pole single throw switch and the operating coil of the two single pole double throw switches are connected to control the opening and closing states of the single pole single throw switch and the two single pole double throw switches.

[0053] The controller can control the opening and closing state of the switch through the corresponding operating coils of each switch in the energy-saving transfer switch, without manual control, which is simpler and more convenient.

[0054] In order to be able to compensate the reactive power loss of the transformer, specifically to compensate its own no-load reactive power loss when the transformer is in...

Embodiment 3

[0063] Based on Embodiment 2, the embodiment of the present invention provides a three-phase transformer energy-saving system, including a three-phase transformer and the energy-saving device in any one of Embodiment 1 or Embodiment 2; wherein, the single-pole single-throw switch is set in the three-phase In one of the incoming phases of the high-voltage side of the transformer; two single-pole double-throw switches are respectively arranged in two phases of the outgoing phases of the low-voltage side of the three-phase transformer.

[0064] When the three-phase winding connection mode of the three-phase transformer is Dyn11, the single-pole single-throw switch is set on the A-phase line of the high-voltage side incoming line phase of the three-phase transformer, and the blade heads of the two single-pole double-throw switches are respectively set on the transformer. On the a-phase line and c-phase line of the low-voltage side outlet phase.

[0065] When the three-phase windin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an energy-saving device and energy-saving system for a three-phase transformer and relates to the technical field of transformers. The energy-saving device comprises at least three energy-saving change-over switches, wherein one energy-saving change-over switch is a single-pole single-throw switch and is used for controlling on / off of one phase of line in a high-voltage side incoming line phase of the three-phase transformer; the other two energy-saving change-over switches are single-pole double-throw switches and are used for controlling on / off of two phases of lines in a low-voltage side outgoing line phase of the three-phase transformer respectively; and tool bits of the single-pole double-throw switches are arranged on the other phase of line, except for the two phases of lines, in the low-voltage side outgoing line phase when the two phases of lines are cut off. The energy-saving system comprises the three-phase transformer and the energy-saving device. According to the energy-saving device and the energy-saving system, the no-load loss of the three-phase transformer is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an energy-saving device and an energy-saving system for a three-phase transformer. Background technique [0002] Three-phase transformers occupy an important position in the power field. As we all know, the no-load loss of three-phase transformers exists in real time under the condition that the terminal voltage of three-phase transformers remains constant, and its magnitude is constant. [0003] However, when the load of the three-phase transformer decreases, for example, in the case of very little electricity load at night, the no-load loss of the three-phase transformer remains unchanged, and even increases due to low power consumption and rising voltage. In order to reduce the loss of the transformer, a three-phase capacity-adjusting transformer is used in the prior art to replace the original transformer. However, the required investment is huge and the cost is high, wh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01F29/02H01F27/40G01R31/02G01R19/165
CPCG01R19/16571G01R19/16576G01R31/50H01F27/40H01F27/402H01F29/02
Inventor 魏晓熙
Owner BEIJING PINGKAI INTELLIGENT ELECTRIC