CN101145431A - Harmonic suppressing energy-saving transformer - Google Patents
Harmonic suppressing energy-saving transformer Download PDFInfo
- Publication number
- CN101145431A CN101145431A CNA2007100256408A CN200710025640A CN101145431A CN 101145431 A CN101145431 A CN 101145431A CN A2007100256408 A CNA2007100256408 A CN A2007100256408A CN 200710025640 A CN200710025640 A CN 200710025640A CN 101145431 A CN101145431 A CN 101145431A
- Authority
- CN
- China
- Prior art keywords
- winding
- output
- phase
- phase winding
- voltage
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
A mild harmonic energy-saving transformer is provided, which relates to a power transformer based on the phase shift principle and adapted to inhibit harmonic waves and reduce energy consumption. The primary winding of the transformer is adapted to the D connection and the secondary winding is adapted to the Z connection with double outputs, that is, the secondary winding is divided into a first group of winding (A1) and a second group of winding (A2). The first group of winding (A1) comprises a first phase winding (a1), a second phase winding (b1) and a third phase winding (c1). The second group of winding (A2) comprises a fourth phase winding (a2), a fifth phase winding (b2) and a sixth phase winding (c2). The mild harmonic energy-saving transformer can inhibit the third harmonic and eliminate the fifth, seventh, seventeenth and nineteenth times harmonics; weaken the harmonic current and the harmonic current-induced coupled magnetic flux of the first and the secondary windings and the current circulation of the first side winding; reduce the stray loss of the transformer; and significantly improve the influence of the secondary harmonic on the primary power network.
Description
Technical field
The present invention relates to a kind of harmonic suppressing energy-saving transformer, particularly a kind of have based on phase shift principle that harmonic wave suppresses, energy-conservation power transformer.
Background technology
All can produce the component sine waves of some frequencies in production, transmission, the conversion of electric power and each link of using, be called high order harmonic component again as fundamental frequency (get commercial frequency 50Hz in China and be fundamental frequency) integral multiple.The generation of harmonic wave is mainly caused by following several reasons: (1) electrical power trans mission/distribution system produces harmonic wave: mainly be that power transformer produces harmonic wave in the electrical power trans mission/distribution system, because transformer core is saturated, magnetization curve non-linear, consider economy when adding the design transformer, its work magnetic is close to be chosen near saturated section of magnetization curve, so just make magnetizing current be the pinnacle waveform, thereby contain odd harmonic.(2) harmonic wave of power consumption equipment generation: as: thyristor rectifier, converter plant, arc furnace, furnace of calcium carbide, gas discharge class electric light source and household electrical appliance miscellaneous.Wherein the harmonic wave of power consumption equipment generation is maximum.
The harm of harmonic wave is many-sided in the electric power system, summarizes and gets up to have the following aspects:
(1) to the harm of power and distribution supply cable, (2) to the harm of power equipment, and (3) to the harm of power consumption equipment, (4). influence the accuracy of power measurement, (5). and harmonic wave is influential to human body.
High order harmonic component has all produced bigger influence to electric power system and user.And along with the increase of non-linear customer, high order harmonic component will be more and more serious, so must suppress the high order harmonic component of electric power system.The method that suppresses the electric power system high order harmonic component is a lot, and commonly used having is following several:
(1) number of phases or the umber of pulse of increase current converter
(2) install dynamic reactive compensation device additional
(3) install filter additional
The Oak Tree that increases current converter has increased the complexity of equipment and the cost of equipment undoubtedly, has reduced the reliability of equipment.
The method that installs dynamic reactive compensation device additional utilizes power electronic equipment to realize, because the capacity of power electronic device is little, cost is high, reliability is low, and different harmonic sources need adopt different compensation policies, moreover stable problem that also may initiating system, so various countries are also keeping certain careful attitude to this technology.So present harmonic suppressing method is still to install the static state inhibition method of passive filtration unit additional.
Passive filtration unit is to utilize inductance capacitance that the resonance of harmonic wave is come harmonic carcellation, and humorous impedance loop is very little during resonance, and electric current is very big, and loss increases, and can cause the vibration and the noise of reactor.
A lot of isolated power systems all have the electrical network of a plurality of different electric pressures, and the electrical network of various electric pressures is different electric, differs from one another.Being extensive use of of power electronic equipment tends to cause the decline of the quality of power supply in the electrical network of a certain electric pressure, and particularly harmonic content is big.For the harmonic wave in the electrical network that makes a certain electric pressure does not impact the electrical network of other electric pressures, need suppress or isolate harmonic wave.The Wang Shanming of Tsing-Hua University has invented the power transformer with harmonic restraining function based on the harmonic wave paraphase, it comprises: two capacity, the identical independent power transformer of no-load voltage ratio, harmonic wave phase inverter by inductance, capacitances in series are formed is parallel to the electrical network two ends.This invention directly utilizes the transformer that itself just exists between the different electric pressure electrical networks, adds the harmonic wave phase inverter, makes harmonic wave be suppressed.But owing to must adopt the transformer of two same capabilities, and adding harmonic wave phase inverter makes cost higher.In order to reduce cost, simplify the transformer manufacturing process, the present invention has been proposed.The present invention utilizes the original transformer that exists between the electrical network of different electric pressures, adopts phase-shifting technique, makes harmonic wave be suppressed, and the harmonic wave of avoiding a certain electrical network impacts the load of other electric pressure electrical networks, realizes isolating mutually.The power transformer that the present invention utilizes electrical network itself to have, only on the bind mode of secondary survey winding, adopted the Z of dual output to connect, avoided influence of harmonic between the electrical network of different electric pressures, have simple in structure, equipment is few, and cost is low, the reliability height, there is not big resonance current, and advantage such as transformer self stray loss is little.
Summary of the invention
Technical problem: technical problem to be solved by this invention provides a kind of harmonic suppressing energy-saving transformer, utilizes this harmonic suppressing energy-saving transformer to weaken harmonic current in Circuit Fault on Secondary Transformer load to the influence of primary side electrical network.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is: the secondary side winding of described transformer adopts the indentation of dual output to connect, be about to described secondary side winding and be divided into first group of winding (A1) and second group of winding (A2), first group of winding (A1) comprises first phase winding (a1), second phase winding (b1) and third phase winding (c1); Second group of winding (A2) comprises the 4th phase winding (a2), the 5th phase winding (b2) and the 6th phase winding (c2); Wherein the first half tail end (a1a) of first phase winding (a1) in first group of winding (A1) is composed in series first output (a11) mutually with the latter half head end (b1b) reversal connection of second phase winding (b1), and the like, obtain the second output phase (b11) and export (c11) mutually with the 3rd, the latter half tail end of described first phase winding (a1), second phase winding (b1), third phase winding (c1) winding is connected together, draw first neutral line (n1); The first half tail end (a2a) of the 4th phase winding (a2) in second group of winding (A2) and the latter half head end (c2b) reversal connection of the 6th phase winding (c2) are composed in series the 4th output (a21) mutually, and the like, obtain the 5th output phase (b21) and export (c21) mutually with the 6th, the latter half tail end of the 4th phase winding (a2), the 5th phase winding (b2), the 6th phase winding (c2) is connected together, draw second neutral line (n2); The output voltage phase angle of the output voltage of the first output phase winding (a11) and the 4th output phase winding (a21) differs 30 degree, the output voltage phase angle of the output voltage of the second output phase winding (b11) and the 5th output phase winding (b21) differs 30 degree, the output voltage phase angle of the output voltage of the 3rd output phase winding (c11) and the 6th output phase winding (c21) differs 30 degree, side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the first output phase winding (a11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 4th output phase winding (a21), side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the second output phase winding (b11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 5th output phase winding (b21), side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the 3rd output phase winding (c11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 6th output phase winding (c21), each output number of turn of anti-series on different core limbs need satisfy
W
1Be the number of turn of the first half, W
2Be the latter half number of turn, N
2The specified equivalent number of turn for secondary side winding.
In a preferred embodiment of the invention, described transformer is three posts, two mount structures.
In a preferred embodiment of the invention, the output capacity of described first side winding and described secondary side winding, no-load voltage ratio, around to identical.
In a preferred embodiment of the invention, the output capacity of described first side winding and described secondary side winding is respectively half of described transformer rated capacity.
Beneficial effect: harmonic suppressing energy-saving transformer can suppress 3 times of subharmonic and eliminate 5,7,17,19 times of subharmonic, the first and second side winding coupled magnetic flux and the first side winding circulation of simultaneously can the reduced harmonic electric current and causing thus, reduce the stray loss of transformer, can greatly improve the influence that the secondary side harmonic wave causes its primary side electrical network.
Description of drawings
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is that the secondary side winding of harmonic suppressing energy-saving transformer connects schematic diagram;
Fig. 2 is the harmonic suppressing energy-saving transformer voltage vector-diagram;
Fig. 3 is upper and lower (or inside and outside) two parts number of turn of each output of secondary side winding of harmonic suppressing energy-saving transformer and the vector relations figure between the specified number of turn of secondary side.
Embodiment
Fig. 1 is that the secondary side winding of harmonic suppressing energy-saving transformer connects schematic diagram.The first side winding of described transformer adopts triangle to connect, the secondary side winding of described transformer adopts the indentation of dual output to connect, be about to described secondary side winding and be divided into first group of winding A1 and second group of winding A2, first group of winding A1 comprises the first phase winding a1, the second phase winding b1 and third phase winding c1; Second group of winding A2 comprises the 4th phase winding a2, the 5th phase winding b2 and the 6th phase winding c2; Wherein the first half tail end a1a of the first phase winding a1 among first group of winding A1 is composed in series first output a11 mutually with the latter half head end b1b reversal connection of the second phase winding b1, and the like, obtain the second output phase b11 and export c11 mutually with the 3rd, the latter half tail end of the described first phase winding a1, the second phase winding b1, third phase winding c1 winding is connected together, draw first neutral line n1; The first half tail end a2a of the 4th phase winding a2 among second group of winding A2 and the latter half head end c2b reversal connection of the 6th phase winding c2 are composed in series the 4th output a21 mutually, and the like, obtain the 5th output phase b21 and export c21 mutually with the 6th, the latter half tail end of the 4th phase winding a2, the 5th phase winding b2, the 6th phase winding c2 is connected together, draw second neutral line n2; The output voltage phase angle of the output voltage of the first output phase winding a11 and the 4th output phase winding a21 differs 30 degree, the output voltage phase angle of the output voltage of the second output phase winding b11 and the 5th output phase winding b21 differs 30 degree, the output voltage phase angle of the output voltage of the 3rd output phase winding c11 and the 6th output phase winding c21 differs 30 degree, side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the first output phase winding a11, side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 4th output phase winding a21, side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the second output phase winding b11, side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 5th output phase winding b21, side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the 3rd output phase winding c11, side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 6th output phase winding c21, each output number of turn of anti-series on different core limbs need satisfy
W
1Be the number of turn of the first half, W
2Be the latter half number of turn, N
2The specified equivalent number of turn for secondary side winding.
Described transformer is three posts, two mount structures.
The output capacity of described first side winding and described secondary side winding, no-load voltage ratio, around to identical.
The output capacity of described first side winding and described secondary side winding is respectively half of described transformer rated capacity.
Fig. 2 is each voltage vector-diagram of exporting mutually, the leading homophase primary side of the voltage phase angle of first output voltage 15 degree, second output voltage phase angular lag homophase primary side voltage 15 degree.
If the ratio of the phase voltage of the primary side of transformer and secondary side is handsome.U
1e/ U
2e, the specified tap number of turn of primary side is N
1, then the specified number of turn of secondary side is
At the phase shift of the degree of 30 between the homophase dual output phase angle, (or inside and outside) two parts number of turn and the specified number of turn of secondary side satisfy vectogram shown in Figure 3 about each output.Thereby can be in the hope of upward (or interior) part number of turn W of each output
1With following (or outer) part number of turn W
2
W
1 2+W
2 2-2*W
1*W
2*cos(120°)N
2 2
W
1 2+N
2 2-2*W
1*N
2*cos(15°)=W
2 2
N
2 2+W
2 2-2-*N
2*W
2*cos(45°)=w
1 2
Each output number of turn of anti-series on different core limbs need satisfy
If the load current of secondary side is I, the composite magnetic power F that produces on a phase core limb for secondary side winding is
F=F
11+F
21+F
12+F
22
F
11Expression a is the magnetic potential of first output top coil generation mutually, F
12Expression c is the magnetic potential of first output lower part coil generation mutually, F
21Expression a is second magnetic potential that output top coil produces mutually, f
22Expression b is second magnetic potential that output lower part coil produces mutually.
F
11＝I·W
1sin(2πfkt)
As harmonic number k=5,7,17,19 the time, composite magnetic power F is 0, and high order harmonic component can not produce the main flux of interlinkage first and second side simultaneously, thereby can suppress the influence of the harmonic component of secondary side to the primary side electrical network.
Claims (4)
1. harmonic suppressing energy-saving transformer, it is characterized in that: the first side winding of described transformer adopts triangle to connect, the secondary side winding of described transformer adopts the indentation of dual output to connect, be about to described secondary side winding and be divided into first group of winding (A1) and second group of winding (A2), first group of winding (A1) comprises first phase winding (a1), second phase winding (b1) and third phase winding (c1); Second group of winding (A2) comprises the 4th phase winding (a2), the 5th phase winding (b2) and the 6th phase winding (c2); Wherein the first half tail end (a1a) of first phase winding (a1) in first group of winding (A1) is composed in series first output (a11) mutually with the latter half head end (b1b) reversal connection of second phase winding (b1), and the like, obtain the second output phase (b11) and export (c11) mutually with the 3rd, the latter half tail end of described first phase winding (a1), second phase winding (b1), third phase winding (c1) winding is connected together, draw first neutral line (n1); The first half tail end (a2a) of the 4th phase winding (a2) in second group of winding (A2) and the latter half head end (c2b) reversal connection of the 6th phase winding (c2) are composed in series the 4th output (a21) mutually, and the like, obtain the 5th output phase (b21) and export (c21) mutually with the 6th, the latter half tail end of the 4th phase winding (a2), the 5th phase winding (b2), the 6th phase winding (c2) is connected together, draw second neutral line (n2); The output voltage phase angle of the output voltage of the first output phase winding (a11) and the 4th output phase winding (a21) differs 30 degree, the output voltage phase angle of the output voltage of the second output phase winding (b11) and the 5th output phase winding (b21) differs 30 degree, the output voltage phase angle of the output voltage of the 3rd output phase winding (c11) and the 6th output phase winding (c21) differs 30 degree, side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the first output phase winding (a11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 4th output phase winding (a21), side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the second output phase winding (b11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 5th output phase winding (b21), side voltage 15 degree of the output voltage phase angular advance homophase first side winding of the 3rd output phase winding (c11), side voltage 15 degree of the output voltage phase angular lag homophase first side winding of the 6th output phase winding (c21), each output number of turn of anti-series on different core limbs need satisfy
W
1Be the number of turn of the first half, W
2Be the latter half number of turn, N
2The specified equivalent number of turn for secondary side winding.
2. harmonic suppressing energy-saving transformer as claimed in claim 1 is characterized in that, described transformer is three posts, two mount structures.
3. harmonic suppressing energy-saving transformer as claimed in claim 1 is characterized in that, the output capacity of described first side winding and described secondary side winding, no-load voltage ratio, around to identical.
4. harmonic suppressing energy-saving transformer as claimed in claim 1 is characterized in that the output capacity of described first side winding and described secondary side winding is respectively half of described transformer rated capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100256408A CN100545966C (en) | 2007-08-10 | 2007-08-10 | Harmonic suppressing energy-saving transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100256408A CN100545966C (en) | 2007-08-10 | 2007-08-10 | Harmonic suppressing energy-saving transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101145431A true CN101145431A (en) | 2008-03-19 |
| CN100545966C CN100545966C (en) | 2009-09-30 |
Family
ID=39207870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100256408A Expired - Fee Related CN100545966C (en) | 2007-08-10 | 2007-08-10 | Harmonic suppressing energy-saving transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100545966C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872969A (en) * | 2010-07-14 | 2010-10-27 | 吉林省电力有限公司电力科学研究院 | Capacitive grounding current distributed compensation method and device for medium-voltage power supply system |
| CN103199681A (en) * | 2013-04-27 | 2013-07-10 | 东南大学 | MMC (modular multilevel converter) circular current restrain technology based on second harmonic trap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986498A (en) * | 2010-11-09 | 2011-03-16 | 舟山大豪节能科技有限公司 | Modular filter |
-
2007
- 2007-08-10 CN CNB2007100256408A patent/CN100545966C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872969A (en) * | 2010-07-14 | 2010-10-27 | 吉林省电力有限公司电力科学研究院 | Capacitive grounding current distributed compensation method and device for medium-voltage power supply system |
| CN101872969B (en) * | 2010-07-14 | 2012-07-04 | 吉林省电力有限公司电力科学研究院 | Capacitive grounding current distributed compensation method and device for medium-voltage power supply system |
| CN103199681A (en) * | 2013-04-27 | 2013-07-10 | 东南大学 | MMC (modular multilevel converter) circular current restrain technology based on second harmonic trap |
| CN103199681B (en) * | 2013-04-27 | 2016-01-13 | 东南大学 | A kind of MMC loop current suppression technology based on second harmonic trap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100545966C (en) | 2009-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Shadfar et al. | Solid‐state transformers: An overview of the concept, topology, and its applications in the smart grid | |
| US20190058408A1 (en) | Multiunit power conversion system | |
| US9312753B2 (en) | Power converter with low common mode noise | |
| CN101521386B (en) | Traction power supply direct hanging type high voltage comprehensive compensation device | |
| CN104036921A (en) | Magnetically-coupled resonant high-frequency air-core transformer | |
| CN105846696A (en) | Two-stage type AC-DC converter and control method thereof | |
| CN100545966C (en) | Harmonic suppressing energy-saving transformer | |
| CN104600702B (en) | Induction control filtering system for integrated electric reactor and control method of induction control filtering system | |
| CN201069694Y (en) | Harmonic restraint energy-saving transformer based on phase shift technology | |
| CN103746381A (en) | Hybrid passive power filter | |
| CN108183616A (en) | A kind of low stress high frequency DC/DC power inverters based on transformer leakage inductance | |
| CN101599353A (en) | Integrated filter inductance transformer | |
| CN106100391A (en) | 12 Pulses Rectifiers based on single secondary low capacity dihedral connection autotransformer | |
| CN101635514A (en) | High-voltage power circuit adopting multi-split transformer | |
| CN104022751A (en) | Integrated filtering system applied to ship and marine engineering | |
| CN103337946B (en) | A kind of MW class also/from net converter composite filter | |
| CN201198066Y (en) | Main circuit topological structure of inverter submerged arc welding power supply | |
| CN209859774U (en) | Power supply intelligent control type power energy-saving transformer with deep integration | |
| CN102368886A (en) | High-frequency high-voltage X-ray defect detector | |
| CN115995946A (en) | Series 12-pulse rectifier | |
| CN205544281U (en) | A purify power supply unit for oil -well rig electric wire netting | |
| CN203660534U (en) | Passive power filter | |
| CN106849083A (en) | One kind realizes harmonic power translation circuit and effective ways | |
| CN203660535U (en) | Hybrid passive power filter | |
| CN103500631A (en) | Filter inductance integrated type rectifier transformer with harmonic suppression function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Ming'an Electric Co., Ltd. Assignor: Southeast University Contract record no.: 2010320000476 Denomination of invention: Harmonic suppressing energy-saving transformer Granted publication date: 20090930 License type: Exclusive License Open date: 20080319 Record date: 20100427 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20120810 |