CN202444266U - Low-voltage side filtering compensation energy-saving type rectifier transformer - Google Patents

Low-voltage side filtering compensation energy-saving type rectifier transformer Download PDF

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Publication number
CN202444266U
CN202444266U CN2012200830206U CN201220083020U CN202444266U CN 202444266 U CN202444266 U CN 202444266U CN 2012200830206 U CN2012200830206 U CN 2012200830206U CN 201220083020 U CN201220083020 U CN 201220083020U CN 202444266 U CN202444266 U CN 202444266U
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CN
China
Prior art keywords
transformer
low
voltage
filtering compensation
pressure
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012200830206U
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Chinese (zh)
Inventor
黄强
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JIANGXI TRANSFORMERS TECH Co Ltd
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JIANGXI TRANSFORMERS TECH Co Ltd
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Priority to CN2012200830206U priority Critical patent/CN202444266U/en
Application granted granted Critical
Publication of CN202444266U publication Critical patent/CN202444266U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40Arrangements for reducing harmonics

Abstract

The utility model relates to a low-voltage side filtering compensation energy-saving type rectifier transformer. Two windings on the low-voltage side of a filtering compensator transformer are respectively connected with two forward and reverse angle-joint low-voltage windings of a main transformer, the high-voltage side of the filtering compensator transformer is externally connected with a filter and a reactive compensation device, and the impedance of the high-voltage side of the filtering compensator transformer to the low-voltage side is required to be designed to be low, and is generally required to be below 10% the total impedance of the voltage-regulating transformer net side in the rectifier transformer to the main transformer valve side. The low-voltage side filtering compensation energy-saving type rectifier transformer has the following advantages that: 1, the rectifier transformer is low in loss, high in efficiency, green and energy-saving; 2, the transformer is low in noise and environment-friendly; 3, the power factor of the rectifier transformer to the net side is high; 4, the harmonic wave output to the electric network by the rectifier transformer is low; and 5, the transformer is compact in structure and small in occupied area.

Description

Low-pressure side filter compensation energy-saving type rectifier transformer
Technical field
The utility model relates to a kind of rectifier transformer, relates in particular to a kind of low-pressure side filter compensation energy-saving type rectifier transformer.
Background technology
The supply power mode of widely-used AC-DC in electrolytic industry, the electric furnace industry, key equipment wherein is rectification (electric furnace) transformer.For example Electrolytic Aluminium Rectifier Transformers, chemical industry are used rectifier transformer with rectifier transformer, electric furnace.The industrial transformer valve of this type lateral load direct voltage is very low usually, and (only 100V~2000V), valve lateral load direct current is but very big, and maximum can reach the 100kA/ platform.Therefore, it is also lower to contain a large amount of harmonic losses, power factor in the industrial transformer of this type, and can cause noise big, and efficient is low, does not meet the requirement of green energy conservation.And the harmonic current of transformer can be harassed into electrical network, and how electrical network is become harmonic pollution, influences the safe operation of electrical network.This type transformer increases a winding usually and is used for carrying out filtering and reactive power compensation for improving power factor, reducing the side harmonics input on voltage regulating transformer.This method only can satisfy the power reguirements of power supply department to factory, can not reduce the harmonic wave in the transformer, also just can not reduce all kinds of losses, noise that harmonic wave produces.
Summary of the invention
The purpose of the utility model is to provide a kind of low-pressure side filter compensation energy-saving type rectifier transformer; Can eliminate the harmonic wave of each critical piece of rectifier transformer completely; Reduce harmonic loss; Thereby improve the operational efficiency of rectifier transformer, reduce transformer noise, make the industrial rectifier transformer of a green energy conservation.
The utility model is realized like this; It comprises voltage regulating transformer, main transformer, filtering compensation transformer; It is characterized in that: voltage regulating transformer connects main transformer, and a filtering compensation transformer is set in the main transformer fuel tank, and the low-pressure side of filtering compensation transformer has two corner connection windings; Forming positive corner connection and dihedral respectively connects; Two windings of filtering compensation step down side link together with two positive and negative corner connection low pressure windings of main transformer respectively, and filtering compensation transformer high-voltage winding voltage (10kV~35 kV) connects filter, reactive power compensator outside the high-pressure side; Filtering compensation transformer high-voltage side need design very for a short time to the low-pressure side impedance, generally require for voltage regulating transformer net side in the rectifier transformer to below 10% of main transformer valve side total impedance.
Said filtering compensation transformer adopting low impedance structure, the filtering compensation Transformer Winding adopts full alternating expression loop construction, and the positive corner connection winding of low pressure, high-pressure side winding, low pressure dihedral are connect winding interlaced arrangement vertically successively; The filtering compensation design of transformer is independent machine body structure or is designed to the conjugation-type structure together with main transformer.Adopt the conjugation-type structure to reduce cost and the low pressure of main transformer, filtering compensation transformer bay connects lead pitch from short, convenient, can reduce the lead-in wire loss.
The energy-saving and noise-reducing principle:
The utility model patent has proposed a kind of low-pressure side filter compensation energy-saving type rectifier transformer.This transformer adopts the filtering compensation transformer owing in transformer, increased by one; And rectifier transformer valve side low-voltage copper bar is owing to directly directly link to each other with filtering compensation transformer low voltage copper bar, and each harmonic current that comes from DC load like this will carry out filtering through the filtering compensation transformer.The impedance that a relatively more crucial parameter of this technology is the filtering compensation transformer need design very for a short time; Generally require for rectifier transformer net side to below 10% of valve side total impedance, only in this way the harmonic current more than 90% that produces of load end could be by the filter filtering.To contain harmonic wave hardly in the critical piece modulation of rectifier transformer, the main transformer, so the transformer overall loss reduces, harmonic noise also reduces significantly, operational efficiency is greatly improved, and power factor (PF) also is improved.
The utlity model has following advantage: 1, the rectifier transformer loss is low, efficient is high, green energy conservation; 2, transformer noise is low, environmental protection; 3, rectifier transformer is high to net side power factor (PF); 4, rectifier transformer is little to the electrical network output harmonic wave; 5, transformer device structure is compact, floor space is little.
Description of drawings
Fig. 1 is embodiment 1 schematic circuit.
Fig. 2 is embodiment 2 schematic circuits.
In the drawings, 1 is voltage regulating transformer; 2 is main transformer; 3 is saturable reactor; 4 is the diode bridge rectifier cabinet; 5 filters; 6 is the filtering compensation transformer; 7 is that DC load 8 is voltage regulating transformer; 9 is main transformer; 10 is controllable silicon bridge-type rectifier cabinet; 11 filters; 12 is the filtering compensation transformer; 13 is DC load.
Embodiment
Embodiment 1:
As shown in Figure 1, the utility model comprises voltage regulating transformer 1, main transformer 2, filtering compensation transformer 6, saturable reactor 3 compositions, and generally voltage regulating transformer 1 is placed on separately in the fuel tank; Main transformer 2, filtering compensation transformer 6, saturable reactor 3 are placed in another fuel tank.Main transformer 2 primary sides adopt indentation phase shift (or polygon phase shift).Main transformer 2 valve sides adopt the cophase counter parallel connection structure usually, have two valve side windings to be connected into positive corner connection winding respectively and dihedral connects winding.Filtering compensation transformer 6 low-pressure sides have two corner connection windings, form positive corner connection and dihedral respectively and connect.Two windings of filtering compensation transformer 6 low-pressure sides link together with two low pressure windings of main transformer 2 respectively.The filtering compensation transformer can connect filter 5, reactive power compensator outside 6 high-pressure sides.Filtering compensation transformer 6 high-pressure sides need be designed very for a short time to the low-pressure side impedance, generally require for voltage regulating transformer net side in the rectifier transformer to below 10% of main transformer valve side total impedance.For satisfying the impedance requirement of filtering compensation transformer, filtering compensation transformer 6 windings adopt full alternating expression loop construction, and the positive corner connection winding of low pressure, high-pressure side winding, low pressure dihedral are connect winding interlaced arrangement vertically successively.Filtering compensation transformer 6 can be designed to independent machine body structure, also can be designed to the conjugation-type structure together with main transformer 2.Saturable reactor connects DC loads 7 through diode bridge rectifier cabinet 4, adopts the conjugation-type structure to reduce cost and the low pressure of main transformer, filtering compensation transformer bay connects lead pitch from short, convenient, can reduce the lead-in wire loss.
Embodiment 2:
As shown in Figure 2, the utility model comprises voltage regulating transformer 8, main transformer 9, filtering compensation transformer 12, and generally voltage regulating transformer 8 is placed on separately in the fuel tank; Main transformer 9, filtering compensation transformer 12 are placed in another fuel tank.Main transformer 9 primary sides adopt indentation phase shift (or polygon phase shift).Main transformer 9 valve sides adopt the cophase counter parallel connection structure usually, have two valve side windings to be connected into positive corner connection winding respectively and dihedral connects winding.Filtering compensation transformer 12 low-pressure sides have two corner connection windings, form positive corner connection and dihedral respectively and connect.Two windings of filtering compensation transformer 12 low-pressure sides link together with two low pressure windings of main transformer 9 respectively.The filtering compensation transformer can connect filter 11, reactive power compensator outside 12 high-pressure sides.Filtering compensation transformer 12 high-pressure sides need be designed very for a short time to the low-pressure side impedance, generally require for voltage regulating transformer net side in the rectifier transformer to below 10% of main transformer valve side total impedance.For satisfying the impedance requirement of filtering compensation transformer, the filtering compensation Transformer Winding adopts full alternating expression loop construction, and the positive corner connection winding of low pressure, high-pressure side winding, low pressure dihedral are connect winding interlaced arrangement vertically successively.The filtering compensation transformer can be designed to independent machine body structure, also can be designed to the conjugation-type structure together with main transformer.Main transformer connects DC loads 13 through controllable silicon bridge-type rectifier cabinet 10, adopts the conjugation-type structure to reduce cost and the low pressure of main transformer, filtering compensation transformer bay connects lead pitch from short, convenient, can reduce the lead-in wire loss.

Claims (2)

1. low-pressure side filter compensation energy-saving type rectifier transformer; It comprises voltage regulating transformer, main transformer, filtering compensation transformer; It is characterized in that: voltage regulating transformer connects main transformer, and a filtering compensation transformer is set in the main transformer fuel tank, and the low-pressure side of filtering compensation transformer has two corner connection windings; Forming positive corner connection and dihedral respectively connects; Two windings of filtering compensation step down side link together with two positive and negative corner connection low pressure windings of main transformer respectively, and filtering compensation transformer high-voltage winding voltage connects filter, reactive power compensator outside the high-pressure side; Filtering compensation transformer high-voltage side need design very for a short time to the low-pressure side impedance, generally require for voltage regulating transformer net side in the rectifier transformer to below 10% of main transformer valve side total impedance.
2. low-pressure side filter compensation energy-saving type rectifier transformer according to claim 1; It is characterized in that filtering compensation transformer adopting low impedance structure; The filtering compensation Transformer Winding adopts full alternating expression loop construction, and the positive corner connection winding of low pressure, high-pressure side winding, low pressure dihedral are connect winding interlaced arrangement vertically successively; The filtering compensation design of transformer is independent machine body structure or is designed to the conjugation-type structure together with main transformer.
CN2012200830206U 2012-03-07 2012-03-07 Low-voltage side filtering compensation energy-saving type rectifier transformer Expired - Fee Related CN202444266U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200830206U CN202444266U (en) 2012-03-07 2012-03-07 Low-voltage side filtering compensation energy-saving type rectifier transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200830206U CN202444266U (en) 2012-03-07 2012-03-07 Low-voltage side filtering compensation energy-saving type rectifier transformer

Publications (1)

Publication Number Publication Date
CN202444266U true CN202444266U (en) 2012-09-19

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CN2012200830206U Expired - Fee Related CN202444266U (en) 2012-03-07 2012-03-07 Low-voltage side filtering compensation energy-saving type rectifier transformer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102629763A (en) * 2012-03-07 2012-08-08 江西变压器科技股份有限公司 Low-voltage side filter compensation energy-saving rectification transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102629763A (en) * 2012-03-07 2012-08-08 江西变压器科技股份有限公司 Low-voltage side filter compensation energy-saving rectification transformer
CN102629763B (en) * 2012-03-07 2014-10-22 江西变压器科技股份有限公司 Low-voltage side filter compensation energy-saving rectification transformer

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120919

Termination date: 20140307