CN102820129B - Filtering type power transformer integrated system and implementation method thereof - Google Patents
Filtering type power transformer integrated system and implementation method thereof Download PDFInfo
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- CN102820129B CN102820129B CN201210344060.6A CN201210344060A CN102820129B CN 102820129 B CN102820129 B CN 102820129B CN 201210344060 A CN201210344060 A CN 201210344060A CN 102820129 B CN102820129 B CN 102820129B
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- 238000001914 filtration Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 299
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims description 20
- 230000004907 flux Effects 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000002887 superconductor Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The invention discloses a filtering type power transformer integrated system and an implementation method thereof. The filtering type power transformer integrated system comprises a transformer and a filtering compensating device, wherein the transformer is provided with a three-winding structure or a four-winding structure; the three-winding structural transformer comprises a high-voltage winding, a medium-voltage winding and a low-voltage shielded winding, wherein the low-voltage winding and the shielded winding share one winding; the low-voltage (shielding) winding is arranged between the high-voltage winding and the medium-voltage winding, and the low-voltage (shielding) winding is connected with the filtering compensating device; the four-winding structural transformer comprises a high-voltage winding, a medium-voltage winding, a low-voltage winding and a shielding winding; and the four windings, namely the low-voltage winding, the medium-voltage winding, the shielding winding and the high-voltage winding are arranged on an iron core of the transformer in sequence, and the shielding winding is connected with the filtering compensating device. The filtering type power transformer integrated system and the implementation method thereof provided by the invention have the advantages of reducing harmonic loss, and improving power factor.
Description
Technical field
The present invention relates to a kind of filtering type power transformer integrated system and its implementation, can be applicable in electric power system, have the transformer station of harmonic-producing load or the industrial cousumer transformer station (or power distribution station) of generation harmonic wave.
Background technology
The extensive application of the nonlinear-loads such as smelting, chemical industry, electric iron causes the problems such as harmonic pollution is large, power factor is low.The harmonic current that nonlinear-load produces flows into grid side, can cause serious pollution to electrical network.Because harmonic wave flows in electrical network, not only produce larger loss, simultaneously to transformer, relaying protection etc. first and second equipment bring very large potential safety hazard, have a strong impact on the safe and economical operation of electrical network, affect the reliable power supply of electrical network.For the user that harmonic-producing load is larger, Traditional solutions mainly installs filter additional to limit the harmonic wave flowing into electrical network in user side.Because traditional filtering method effect is undesirable, cause the harmonic wave injecting electrical network still comparatively large, even exceed Standard.For the user that harmonic-producing load is less, because filter expense drops into larger, in addition user is not high to the awareness of harmonic wave, major part does not all install filter additional, harmonic current like this for transformer station's common bus superposition injection of the multiple load of access is very large, inject electrical network by transformer, thus affect grid supply quality.
Therefore, be necessary to design a kind of filtering type power transformer integrated system and its implementation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of filtering type power transformer integrated system and its implementation, and this filtering type power transformer integrated system and its implementation effectively can reduce harmonic loss, improves power factor (PF).
The technical solution of invention is as follows:
A kind of filtering type power transformer integrated system, is characterized in that, bag filtering type power transformer and filtering compensation system; Described transformer has three winding structure or four winding constructions;
The number of turn of three windings that the transformer of three winding structure comprises is respectively N1, N2 and N3, and N1>N2>N3, remember that these three windings are respectively high pressure winding, middle pressure winding and low pressure shield winding, [low pressure winding and shield winding be totally one winding, is namely called low pressure shield winding]; Low pressure shield winding is arranged between high pressure winding and middle pressure winding; Low pressure shield winding connects with filtering compensation device;
The number of turn of 4 windings that the transformer of four winding constructions comprises is respectively M1, M2, M3 and M4, and M1>M2>M3, M4 is less than or equal to M3, remember that these 4 windings are respectively high pressure winding, middle pressure winding, low pressure winding and shield winding; 4 the arrangement positions of winding on the iron core of transformer are: be followed successively by low pressure winding, middle pressure winding, shield winding, high pressure winding from inside to outside; Shield winding connects with filtering compensation device.
For the transformer of three winding structure, first side winding and high pressure winding adopt star-star connection, and middle pressure winding adopts star-star connection, and low pressure winding adopts delta connection;
For the transformer of four winding constructions, first side winding and high pressure winding adopt star-star connection, and secondary side winding i.e. middle pressure winding adopts star-star connection, and shield winding and low pressure winding all adopt delta connection.
Described filtering compensation device is one group of harmonic absorption branch road or forms by organizing harmonic absorption branch circuit parallel connection more.
For the transformer of three winding structure, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure shield winding is 35kV or 10kV;
For the transformer of four winding constructions, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure winding and shield winding is 35kV or 10kV.
A kind of implementation method of filtering type power transformer integrated system, the transformer of the transformer of three winding structure or four winding constructions is connected with filtering compensation device and involves raising power factor (PF) so that filtering is humorous, the number of turn of three windings that the transformer of three winding structure comprises is respectively N1, N2 and N3, and N1>N2>N3, remember that these three windings are respectively high pressure winding, middle pressure winding and low pressure shield winding; Low pressure shield winding is arranged between high pressure winding and middle pressure winding; Low pressure winding connects with filtering compensation device;
The number of turn of 4 windings that the transformer of four winding constructions comprises is respectively M1, M2, M3 and M4, and M1>M2>M3, M4 is less than or equal to M3, record these 4 windings and be respectively high pressure winding, middle pressure winding, low pressure winding and shield winding; 4 the arrangement positions of winding on the iron core of transformer are: be followed successively by low pressure winding, middle pressure winding, shield winding, high pressure winding from inside to outside; Shield winding connects with filtering compensation device.
For the transformer of three winding structure, first side winding and high pressure winding adopt star-star connection, and secondary side winding i.e. middle pressure winding adopts star-star connection, and low pressure winding adopts delta connection;
For the transformer of four winding constructions, first side winding and high pressure winding adopt star-star connection, and middle pressure winding adopts star-star connection, and shield winding and low pressure winding all adopt delta connection.
Described filtering compensation device is one group of harmonic absorption branch road or forms by organizing harmonic absorption branch circuit parallel connection more.
For the transformer of three winding structure, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure winding is 35kV or 10kV;
For the transformer of four winding constructions, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure winding and shield winding is 35kV or 10kV.
A kind of filtering type power transformer integrated system, comprise high pressure winding, middle pressure winding and low pressure (shielding) winding and filtering compensation system, what be different from traditional winding is that low pressure (shielding) winding is arranged between high pressure winding and middle pressure winding, low pressure (shielding) winding designs through special impedance, low pressure (shielding) winding connects with filtering compensation system, and no-load voltage ratio is consistent with traditional transformer.By to connect complete modulation filter, realize effective shielding of the harmonic flux to injection transformer, filtering is humorous involves raising power factor.
In conventional method, filtering compensation Operation system setting at high voltage side of transformer, harmonic flux free flow within the scope of the main core of inside transformer, air and wet goods.Meanwhile, secondary load winding harmonic wave alternating flux, when wearing chain source side winding, also can respond to corresponding harmonic current at source side winding.This illustrates the iron loss in conventional method caused by harmonic flux, and is existed by the copper loss of harmonic current caused by source side winding always, and this is also the problem adopting traditional filtering method cann't be solved at present.
In patented technology of the present invention, filtering compensation Operation system setting is at the secondary side of transformer, owing to adding shield winding, and its leakage reactance is very little, close to zero, this winding access complete modulation filter, constitutes zero impedance loop under certain subfrequency, has possessed the condition of " superconductor " closed-loop path.
When secondary load winding flows through harmonic current, corresponding harmonic flux can be produced.This alternation harmonic flux induces corresponding harmonic wave electromotive force in the closed-loop path that shield winding and tuner are formed, and due to the existence of closed-loop path, just in this loop, produces corresponding harmonic current, produces corresponding harmonic wave electromotive force afterwards.
According to " superconduction " loop magnetism chain conservation principle, no matter how outside harmonic field interlinkage should the harmonic wave magnetic linkage of " superconductor " closed-loop path change, the harmonic wave magnetic linkage that loop induced harmonics electric current produces always resists this change, this means under specific subfrequency, between secondary load winding and secondary shield winding, reach harmonic wave magnetic potential balance state.
Because harmonic wave magnetomotive force balances between load winding and shield winding, therefore, source side winding would not respond to the harmonic current of specific subfrequency, that is, harmonic current is shielded from the secondary load winding of transformer, achieves the isolation with source side winding and AC network.The reactive power consumed can be provided by filtering compensation device simultaneously.
Show thus, under specific subfrequency, as long as ensure that the specific subharmonic total impedance of the closed-loop path that shield winding and filtering compensation device form is approximately 0, namely ensure the condition of the superconductor closed-loop path under specific subfrequency, the harmonic flux that then load harmonic current of injection transformer produces all can realize good shielding action, thus gets good filter effect.
Beneficial effect:
Filtering type power transformer integrated system of the present invention and its implementation, the winding of the transformer adopted and the difference of traditional winding are that low pressure (shielding) winding is arranged between high pressure winding and middle pressure winding, low pressure (shielding) winding connects with filtering compensation device, and no-load voltage ratio is consistent with traditional transformer.Pass through the connect effective shielding of complete modulation filter realization to the harmonic flux of injection transformer, filtering is humorous involves raising power factor.
This filtering type power transformer integrated system operationally, harmonic injection transformer, shield winding is (when three winding structure, low pressure winding and shield winding be totally one winding) short-circuit impedance is very little or be approximately 0, the filter complete modulation connect, utilize the effective shielding of electromagnetic induction principle realization to harmonic flux, thus the effective filtering played harmonic wave and inactive power compensation.
This filtering type transformer integrated system can shield the harmonic flux that Load harmonic electric current produces, and isolation load side injects the harmonic current of electrical network, greatly reduces the harmonic loss of transformer and the noise and vibration caused by harmonic component, improves power factor.
This filtering type transformer integrated system effectively filtering can not only inject the harmonic wave of electrical network, can also improve power factor, the operational efficiency of elevator system, reduce electromagnetic noise, energy-conserving and environment-protective.Filtering type transformer integrated system adopts multiple secondary winding pattern, is divided into high pressure winding, middle pressure winding, low pressure (shielding) winding.Harmonic filtration effect exceeds more than 20% than adopting traditional passive filtering method, and power factor compensation can reach more than 0.96.The harmonic loss of effective reduction electrical network, improves the safety operation level of electrical network.
Accompanying drawing explanation
Fig. 1 is the structural representation (having the transformer of three winding structure) of filtering type power transformer integrated system;
Fig. 2 is the structural representation (having the transformer of four winding constructions) of filtering type power transformer integrated system
Fig. 3 is three winding structure (figure a) He four winding constructions (figure Transformer Winding layout plan b).
Fig. 4 is that patented technology of the present invention and conventional method contrast filter effect figure.
Label declaration: 1-high pressure winding, presses winding in 2-, 3-low pressure winding, 4-filtering compensation device, 5-shield winding, 6-low pressure shield winding.
Embodiment
Below with reference to the drawings and specific embodiments, the present invention is described in further details:
Embodiment 1:
See Fig. 1 and Fig. 3 (a), the transformer of filtering type power transformer integrated system adopts three winding structure, specifically comprises high pressure winding (electric pressure is 220kV), middle pressure winding (electric pressure is 110kV) and low pressure shield winding (electric pressure is 10kV).Low pressure shield winding is arranged between high pressure winding and middle pressure winding (see Fig. 3 (a)), and low pressure winding connects with filtering compensation device.
Filter presses complete modulation design, and namely for certain subharmonic (such as 5 subharmonic), this filter branch 5 subharmonic reactance is equal with 5 subharmonic capacitive reactances, i.e. ω
5l=1/ ω
5c, the total impedance of branch road is zero, realizes complete modulation.The filter branch design principle of other harmonic number is consistent.
In FIG, filtering type power transformer adopts multiple secondary winding pattern, its first side winding adopts star-star connection, input termination AC power 1(is electrical network or generating end), electric pressure is 220kV, presses winding strap load to power in its secondary side, and electric pressure is 110kV, its secondary side low pressure (shielding) winding adopts delta connection, and electric pressure is 10kV.
Low pressure shield winding can be with other load to power simultaneously.Export termination filter (containing compensate function).Can being made up of the filter with different structure type, can be one or more filter branch, realizes the filtering to each harmonic that load produces.
Fig. 4 is that patented technology of the present invention and conventional method contrast filter effect figure.Fig. 4 a is the voltage, the current waveform figure that adopt conventional method, waveform Severe distortion, and Fig. 4 b is the voltage, the current waveform figure that adopt patented technology of the present invention, and waveform improves obviously, becomes qualified sine wave.
Adopt the art of this patent, in transformer, harmonic flux is because of effectively shielding, harmonic loss reduces by more than 70% than traditional transformer, transformer noise reduces 5-15db, power factor brings up to 0.96, and the voltage distortion rate of transformer 220kV, 110kV10kV side meets or exceeds the requirement of national standard 2%, 3%, 4%.
Embodiment 2:
See Fig. 2 and Fig. 3 (b), the transformer of filtering type power transformer integrated system adopts four winding constructions, specifically comprises high pressure winding (electric pressure is 220kV), middle pressure winding (electric pressure is 110kV) and low pressure winding and shield winding (electric pressure is 10kV).Shield winding is arranged between high pressure winding and middle pressure winding (see Fig. 3 (b)), and shield winding connects with filtering compensation device.
Filtering compensation device (filter) is reactor L and capacitor C in series structure, and the induction reactance for certain particular harmonic is equal with capacitive reactance, i.e. ω
nl=1/ ω
nc, wherein ω is first-harmonic angular frequency, and n is harmonic number.Filter presses complete modulation design, and namely for certain subharmonic, for 5 subharmonic, this filter branch 5 subharmonic reactance is equal with 5 subharmonic capacitive reactances, i.e. ω
5l=1/ ω
5c, the total impedance of branch road is zero, realizes complete modulation.The filter branch design principle of other harmonic number is consistent.
Filter effect contrast is suitable with the effect of embodiment 1.
Adopt the art of this patent, in transformer, harmonic flux is because of effectively shielding, harmonic loss reduces by more than 70% than traditional transformer, transformer noise reduces 5-15db, power factor brings up to 0.96, and the voltage distortion rate of transformer 220kV, 110kV10kV side meets or exceeds the requirement of national standard 2%, 3%, 4%.
Shield winding short-circuit impedance is very little or be approximately 0.Filter presses complete modulation design.By designing the effective shielding realizing the harmonic flux to injection transformer with the filtering compensation device connect to the special impedance of shield winding, filtering is humorous involves raising power factor.
In addition, when adopting three winding structure, high-pressure side (can be 220kV or 110kV) is mains side, and medium voltage side (corresponding to 110kV or 35kV) tape splicing load is powered, and low pressure (shielding) winding (corresponding to 35kV or 10kV) connects complete modulation filter simultaneously and can power by other load of tape splicing.
When adopting four winding constructions, it is characterized in that, increase a shield winding, shield winding be arranged on high pressure winding and in, between low pressure winding, next-door neighbour's high pressure winding.High-pressure side (can be 220kV or 110kV) is mains side, medium voltage side (corresponding to 110kV or 35kV) tape splicing load is powered, low-pressure side (corresponding to 35kV or 10kV) tape splicing low-voltage load is powered, and shield winding connects separately complete modulation filter and realizes filtering and compensation.
Complete modulation design pressed by filter, has no-power compensation function simultaneously.
Claims (6)
1. a filtering type power transformer integrated system, is characterized in that, comprises filtering type power transformer and filtering compensation system; Described filtering type power transformer has three winding structure or four winding constructions;
The number of turn of three windings that the transformer of three winding structure comprises is respectively N1, N2 and N3, and N1>N2>N3, namely these three windings are respectively high pressure winding, middle pressure winding and low pressure shield winding; Low pressure shield winding is arranged between high pressure winding and middle pressure winding; Low pressure shield winding connects with filtering compensation system;
The number of turn of 4 windings that the transformer of four winding constructions comprises is respectively M1, M2, M3 and M4, and M1>M2>M3, M4 is less than or equal to M 3, and namely these 4 windings are respectively high pressure winding, middle pressure winding, low pressure winding and shield winding; 4 the arrangement positions of winding on the iron core of transformer are: be followed successively by low pressure winding, middle pressure winding, shield winding and high pressure winding from inside to outside; Shield winding connects with filtering compensation system;
Low pressure shield winding or shield winding short-circuit impedance very little or be approximately 0, the filtering compensation system complete modulation connect, utilize effective shielding that electromagnetic induction principle realizes harmonic flux;
For the transformer of three winding structure, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure shield winding is 35kV or 10kV;
For the transformer of four winding constructions, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure winding and shield winding is 35kV or 10kV.
2. filtering type power transformer integrated system according to claim 1, it is characterized in that, for the transformer of three winding structure, first side winding and high pressure winding adopt star-star connection, middle pressure winding adopts star-star connection, and low pressure shield winding adopts delta connection;
For the transformer of four winding constructions, first side winding and high pressure winding adopt star-star connection, and secondary side winding i.e. middle pressure winding adopts star-star connection, and shield winding and low pressure winding all adopt delta connection.
3. filtering type power transformer integrated system according to claim 1, is characterized in that, described filtering compensation system is one group of harmonic absorption branch road or forms by organizing harmonic absorption branch circuit parallel connection more.
4. the implementation method of a filtering type power transformer integrated system, it is characterized in that, the transformer of the transformer of three winding structure or four winding constructions is connected with filtering compensation system and involves raising power factor so that filtering is humorous, the number of turn of three windings that the transformer of three winding structure comprises is respectively N1, N2 and N3, and N1>N2>N3, namely these three windings are respectively high pressure winding, middle pressure winding and low pressure shield winding; Low pressure shield winding is arranged between high pressure winding and middle pressure winding; Low pressure shield winding connects with filtering compensation system;
The number of turn of 4 windings that the transformer of four winding constructions comprises is respectively M1, M2, M3 and M4, and M1>M2>M3, M4 is less than or equal to M 3, and namely these 4 windings are respectively high pressure winding, middle pressure winding, low pressure winding and shield winding; 4 the arrangement positions of winding on the iron core of transformer are: be followed successively by low pressure winding, middle pressure winding, shield winding, high pressure winding from inside to outside; Shield winding connects with filtering compensation system;
Low pressure shield winding or shield winding short-circuit impedance very little or be approximately 0, the filtering compensation system complete modulation connect, utilize effective shielding that electromagnetic induction principle realizes harmonic flux;
For the transformer of three winding structure, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure shield winding is 35kV or 10kV;
For the transformer of four winding constructions, the electric pressure of high pressure winding is 220kV or 110kV, and the electric pressure of middle pressure winding is 110kV or 35kV, and the electric pressure of low pressure winding and shield winding is 35kV or 10kV.
5. the implementation method of filtering type power transformer integrated system according to claim 4, it is characterized in that, for the transformer of three winding structure, first side winding and high pressure winding adopt star-star connection, secondary side winding i.e. middle pressure winding adopts star-star connection, and low pressure shield winding adopts delta connection;
For the transformer of four winding constructions, first side winding and high pressure winding adopt star-star connection, and middle pressure winding adopts star-star connection, and shield winding and low pressure winding all adopt delta connection.
6. the implementation method of filtering type power transformer integrated system according to claim 4, is characterized in that, described filtering compensation system is one group of harmonic absorption branch road or forms by organizing harmonic absorption branch circuit parallel connection more.
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| CN201210344060.6A CN102820129B (en) | 2012-09-17 | 2012-09-17 | Filtering type power transformer integrated system and implementation method thereof |
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| CN201210344060.6A CN102820129B (en) | 2012-09-17 | 2012-09-17 | Filtering type power transformer integrated system and implementation method thereof |
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| CN102820129B true CN102820129B (en) | 2015-06-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103310958A (en) * | 2013-06-29 | 2013-09-18 | 广东海鸿变压器有限公司 | Stereoscopic rolled iron core type photovoltaic transformer with stabilizing windings |
| CN103515960B (en) * | 2013-09-30 | 2016-01-20 | 国网湖南省电力公司 | The hybrid power filtering of magnetic integrated form and reactive compensation system |
| CN108878120A (en) * | 2017-05-08 | 2018-11-23 | 特变电工衡阳变压器有限公司 | A kind of energy-saving filter type power transformer |
| CN108614949B (en) * | 2018-05-17 | 2021-09-10 | 湖南大学 | Harmonic current distribution calculation method for transformer integrated regulation and control filtering system |
| CN110556837B (en) * | 2019-10-08 | 2023-01-13 | 国网湖南省电力有限公司 | Power grid harmonic wave shielding method based on four-winding induction filtering power transformer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557116A (en) * | 2009-02-26 | 2009-10-14 | 湖南大学 | Environment-friendly and energy-saving DC power station |
| CN201780850U (en) * | 2010-07-02 | 2011-03-30 | 湖南华大电工高科技有限公司 | Energy-saving filter low-noise transformer |
| CN202816588U (en) * | 2012-09-17 | 2013-03-20 | 湖南华大电工高科技有限公司 | Filtering type power-transformer integration system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557116A (en) * | 2009-02-26 | 2009-10-14 | 湖南大学 | Environment-friendly and energy-saving DC power station |
| CN201780850U (en) * | 2010-07-02 | 2011-03-30 | 湖南华大电工高科技有限公司 | Energy-saving filter low-noise transformer |
| CN202816588U (en) * | 2012-09-17 | 2013-03-20 | 湖南华大电工高科技有限公司 | Filtering type power-transformer integration system |
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Effective date of registration: 20210924 Address after: 410000 908, building 8, sunshine West Group, California, No. 38, Guyuan Road, Changsha high tech Development Zone, Changsha City, Hunan Province Patentee after: HUNAN HUADA ELECTRICIAN HI-TECH Co.,Ltd. Address before: 410013 No. 456, lushong Road, Lugu, Changsha high tech Development Zone, Hunan Province Patentee before: HUNAN HUADA UNISPLENDOUR TECHNIC Corp.,Ltd. |