CN107196262A - Wind power plant intensive style DC de-icing device topological structure - Google Patents
Wind power plant intensive style DC de-icing device topological structure Download PDFInfo
- Publication number
- CN107196262A CN107196262A CN201710601165.8A CN201710601165A CN107196262A CN 107196262 A CN107196262 A CN 107196262A CN 201710601165 A CN201710601165 A CN 201710601165A CN 107196262 A CN107196262 A CN 107196262A
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- Prior art keywords
- winding
- ice
- svg
- transformer
- power plant
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/04—Fixed transformers not covered by group H01F19/00 having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of wind power plant intensive style DC de-icing device topological structure, including three winding ice-melt transformer, connection in series-parallel disconnecting link and two groups of dynamic passive compensation units, the three winding of three winding ice-melt transformer includes primary side winding and two vice-side windings, dynamic passive compensation unit includes two SVG being arranged in parallel, the primary side winding of ice-melt transformer is connected with power network, vice-side winding is connected with two SVG of Different Dynamic reactive compensation unit respectively, input of each SVG output end respectively with connection in series-parallel disconnecting link is connected, the output end of connection in series-parallel disconnecting link is with treating that DC ice-melting is connected.The present invention can realize the multi-functional outputs of wind power plant standard configuration dynamic reactive compensation device SVG, usually it is used for wind farm voltage and reactive power compensation, it is used for line ice-melting during dry monsoon electrical field line icing, with a wide range of electric current regulating power, line style is met to differ greatly different line ice-melting demands, wind power plant line ice-melting capacity requirement is disclosure satisfy that, and floor space is small, construction cost is low.
Description
Technical field
The present invention relates to electrical engineering technology, and in particular to a kind of wind power plant is tied with intensive DC de-icing device topology
Structure.
Background technology
In recent years, in the dual-pressure that energy-output ratio is increased rapidly, the continuous high and global ecological environment of price deteriorates
Under, exploitation renewable new energy has all been put into critical positions by countries in the world.In numerous regenerative resources, wind energy is with it
Huge superiority and potentiality to be exploited is favored by people, and wind-power electricity generation is also quickly grown, and has powerful life as one
The industry of power.THE WIND ENERGY RESOURCES IN CHINA very abundant, is calculated, land wind energy resource theory reserves are using the wind speed of 10 meters of height
32.26 hundred million kilowatts, actual exploitable resources are 2.53 hundred million kilowatts, and Construction of Wind Power is just being opened up in high gear in China each province
Open.Construction of Wind Power addressing is general all in the higher area of high mountain or height above sea level, and the Guizhou of China, Hunan, Hubei etc. are southernly
Area's ice disaster takes place frequently, and wind power plant transmission line of electricity is more subject to icing disaster, causes the broken string of falling tower, seriously threatens wind power plant defeated
Electric line safe and stable operation and power supply reliability.
In order to improve the ability that transmission line of electricity resists ice damage, domestic many units have developed the DC ice melting dress of Multiple Type
Put, solid technical guarantee is provided for power network Winter safety stable operation, but existing deicing device is mainly for major network or agriculture
Net transmission line of electricity, it is impossible to be applied to wind power plant transmission line de-icing very well, existing deicing device is primarily present problems with：Problem
1, DC ice-melting line style is relatively unified or close, and wind power plant collection electric line and submitting circuit line style differ greatly, and gives ice-melt dress
Put a wide range of electric current regulating power and propose requirements at the higher level；Problem 2, major network deicing device capacity is bigger than normal, and rural power grids deicing device
Capacity is less than normal, can not meet wind power plant transmission line de-icing demand；Problem 3, existing deicing device construction floor space is bigger than normal,
And the universal floor space of wind power plant is smaller, it is difficult to meet existing deicing device construction land demand；Problem 4, existing deicing device
Construction cost is higher, it is difficult in the wind power plant popularization and application as electricity power enterprise.Therefore, for wind power plant ice-melt feature, urgently
Need to carry out the DC de-icing device research suitable for wind power plant.
The content of the invention
The technical problem to be solved in the present invention is：For prior art above mentioned problem there is provided one kind utilize wind power plant mark
The two SVG dynamic reactive compensation devices matched somebody with somebody realize that ice-melt DC current is exported, and can be set for the structure of wind power plant deicing device
Meter is provided with final development and instructed effectively to solve the problems, such as wind power plant ice-melt, is widely portable to the wind-powered electricity generation of ice-melt demand
, with the wind-powered electricity generation that a wide range of electric current regulating power, capacity meet wind power plant ice-melt demand, floor space is small, construction cost is low
Field intensive style DC de-icing device topological structure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of wind power plant with intensive DC de-icing device topological structure, including three winding ice-melt transformer, connection in series-parallel disconnecting link and
Two groups of dynamic passive compensation units, the three winding of the three winding ice-melt transformer includes primary side winding and two vice-side windings,
The dynamic passive compensation unit includes two SVG being arranged in parallel, the primary side winding of the ice-melt transformer is connected with power network,
Vice-side winding is connected with two SVG of Different Dynamic reactive compensation unit respectively, each SVG output end respectively with connection in series-parallel knife
The input of lock is connected, and the output end of the connection in series-parallel disconnecting link is with treating that DC ice-melting is connected.
Preferably, the SVG is cascaded and formed successively by multiple power models, and the input of two SVG and ice-melt become
The vice-side winding of depressor is connected, output end three-phase short circuit formation neutral point, each SVG neutral point output end respectively with connection in series-parallel
The input of disconnecting link is connected.
Preferably, the three winding ice-melt transformer is three winding 12 pulsating wave ice-melt transformer.
Preferably, in two vice-side windings of the three winding ice-melt transformer, the mode of connection of a vice-side winding is
Y0, another vice-side winding the mode of connection be D11, the output voltage difference of two vice-side windings is no more than 0.25%.
Preferably, the three winding 12 pulsating wave ice-melt transformer uses Low ESR wide-voltage-regulation rectifier transformer, transformer
Impedance ranges：6% to 12%, transformer regulating scope：20% to 100%.
Preferably, it is in not between each winding of low-pressure side of the three winding ice-melt transformer and between each winding and transformer core
It is uniformly distributed.
The intensive DC de-icing device topological structure tool of the wind power plant of the present invention has the advantage that：
1st, the multi-functional outputs of wind power plant standard configuration dynamic reactive compensation device SVG are realized, usually for wind power plant voltage and reactive power compensation,
During dry monsoon electrical field line icing, for line ice-melting；
2nd, with a wide range of electric current regulating power, meet line style and differ greatly different line ice-melting demands；
3rd, wind power plant line ice-melting capacity requirement is met, and floor space is small, construction cost is low, and being widely portable to ice-melt needs
The wind power plant asked.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the SVG structural representations in the embodiment of the present invention.
Fig. 3 is the Low ESR wide-voltage-regulation rectifier transformer winding distribution schematic diagram in the embodiment of the present invention.
Embodiment
As shown in Fig. 1, the wind power plant of the present embodiment includes three winding ice-melt with intensive DC de-icing device topological structure
Transformer 1, connection in series-parallel disconnecting link 2 and two groups of dynamic passive compensation units 3, the three winding of three winding ice-melt transformer 1 include primary side
Winding and two vice-side windings, dynamic passive compensation unit 3 include two SVG being arranged in parallel（Dynamic reactive compensation device）,
The primary side winding and power network of ice-melt transformer 1 are connected, two SVG of vice-side winding respectively with Different Dynamic reactive compensation unit 3
It is connected, the input of each SVG output end respectively with connection in series-parallel disconnecting link 2 is connected, and the output end of connection in series-parallel disconnecting link 2 is with treating ice-melt
Circuit is connected.The present embodiment can functionally be divided into DC ice melting transformation system（Three winding ice-melt transformer 1）With dynamic nothing
Work(compensation system（Connection in series-parallel disconnecting link 2 and two groups of dynamic passive compensation units 3）, three winding 12 pulsating wave ice-melt transformer inputs
Give a dinner for a visitor from afar electric field 10kV ac bus, the three-phase windings of output end two connect two groups of dynamics respectively after 10kV high pressures are depressured by ice-melt transformer
Two SVG inputs of reactive compensation unit 3, two groups of dynamic passive compensation units 3 include SVG#1, SVG#2, SVG#3, SVG#4
Totally 4 SVG, first group of dynamic passive compensation unit 3 is made up of SVG#1, SVG#2, second group of dynamic passive compensation unit 3 by
SVG#3, SVG#4 are constituted, and SVG#1, SVG#2, SVG#3, SVG#4 output end connect the input of connection in series-parallel disconnecting link 2 respectively, and string is simultaneously
Connection disconnecting link 2 can realize that SVG#1, SVG#2, SVG#3, SVG#4 export the serial or parallel connection output of two groups of DC currents, connection in series-parallel
The output end reception DC ice-melting of disconnecting link 2, DC current of the output with a wide range of electric current regulating power meets wind power plant circuit
Ice-melt requirement.
As shown in Fig. 2 SVG is by multiple power models（Power model #1, power model #2 ..., power model #N）According to
Secondary cascade is formed, and two SVG input is connected with the vice-side winding of ice-melt transformer, output end three-phase short circuit forms neutrality
Point, the input of each SVG neutral point output end respectively with connection in series-parallel disconnecting link 2 is connected.SVG every phase input and three winding
The three-phase output end of the vice-side winding of ice-melt transformer 1 is respectively connected with, and is neutral point, SVG operations per phase output terminal three-phase short circuit
When reactive-load compensation pattern, central point is hanging；When running on DC ice melting pattern, neutral point output as DC voltage electrode or
Negative pole.
As shown in figure 3, each winding of low-pressure side of three winding ice-melt transformer 1（#5、#6、#7）Between and each winding and transformer
It is in uneven distribution between iron core, meets ice-melt transformer Low ESR wide-voltage-regulation demand.
In the present embodiment, three winding ice-melt transformer 1 is three winding 12 pulsating wave ice-melt transformer.
As shown in figure 1, the three winding of three winding ice-melt transformer 1 includes primary side winding and star winding, delta windings
In two vice-side windings, two vice-side windings of three winding ice-melt transformer 1, the mode of connection of a vice-side winding is Y0, it is another
The mode of connection of one vice-side winding is D11, the output voltage difference of two vice-side windings is no more than 0.25%.
In the present embodiment, three winding 12 pulsating wave ice-melt transformer uses Low ESR wide-voltage-regulation rectifier transformer, transformer
Impedance ranges：6% to 12%, transformer regulating scope：20% to 100%, it is possible to achieve many gear voltage outputs；SVG#1、SVG#2、
SVG#3, SVG#4 can realize the reactive-load compensation of wind power plant busbar voltage or export DC current by SVG central points.
In the present embodiment, the pulse wave transformer of RBYQ-10kV-5kV types 12 that three winding ice-melt transformer 1 is used, connection in series-parallel
Disconnecting link 2 uses commercially available CBPDZ-10kV types disconnecting link.
The wind power plant of the present embodiment is as follows with the operation principle of intensive DC de-icing device topological structure：Three winding ice-melt
Transformer 1 is exported after 10kV high pressures are depressured, when dynamic passive compensation mode is run, SVG#1, SVG#2, SVG#3, SVG#4
It is connected by three winding ice-melt transformer 1 with power network line, realizes dynamic passive compensation；When ice-melting mode is run, SVG#1,
SVG#2 exports a DC current by respective neutral point, and SVG#3, SVG#4 export another DC current by respective neutral point,
Two DC currents realized by connection in series-parallel disconnecting link exported after serial or parallel connection to treat DC ice-melting implement DC ice melting.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of wind power plant intensive style DC de-icing device topological structure, it is characterised in that：Including three winding ice-melt transformer
（1）, connection in series-parallel disconnecting link（2）With two groups of dynamic passive compensation units（3）, the three winding ice-melt transformer（1）Three winding bag
Include primary side winding and two vice-side windings, the dynamic passive compensation unit（3）It is described to melt including two SVG being arranged in parallel
Ice transformer（1）Primary side winding and power network be connected, vice-side winding respectively with Different Dynamic reactive compensation unit（3）Two
SVG is connected, each SVG output end respectively with connection in series-parallel disconnecting link（2）Input be connected, the connection in series-parallel disconnecting link（2）It is defeated
Go out end with treating that DC ice-melting is connected.
2. wind power plant according to claim 1 intensive style DC de-icing device topological structure, it is characterised in that：It is described
SVG is cascaded and formed successively by multiple power models, the input of two SVG is connected with the vice-side winding of ice-melt transformer,
Output end three-phase short circuit formation neutral point, each SVG neutral point output end respectively with connection in series-parallel disconnecting link（2）Input phase
Even.
3. wind power plant according to claim 1 or 2 intensive style DC de-icing device topological structure, it is characterised in that：Institute
State three winding ice-melt transformer（1）For three winding 12 pulsating wave ice-melt transformer.
4. wind power plant according to claim 3 intensive style DC de-icing device topological structure, it is characterised in that：Described three
Winding ice-melt transformer（1）Two vice-side windings in, the mode of connection of a vice-side winding is Y0, another vice-side winding
The mode of connection is D11, the output voltage difference of two vice-side windings is no more than 0.25%.
5. wind power plant according to claim 3 intensive style DC de-icing device topological structure, it is characterised in that：Described three
Winding 12 pulsating wave ice-melt transformer uses Low ESR wide-voltage-regulation rectifier transformer, transformer impedance scope：6% to 12%, transformation
Device range of regulation：20% to 100%.
6. wind power plant according to claim 1 intensive style DC de-icing device topological structure, it is characterised in that：Described three
Winding ice-melt transformer（1）Each winding of low-pressure side between and each winding and transformer core between be in uneven distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601165.8A CN107196262B (en) | 2017-07-21 | 2017-07-21 | The intensive DC de-icing device topological structure of wind power plant |
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| CN201710601165.8A CN107196262B (en) | 2017-07-21 | 2017-07-21 | The intensive DC de-icing device topological structure of wind power plant |
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| CN107196262B CN107196262B (en) | 2018-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899852A (en) * | 2018-08-24 | 2018-11-27 | 国网湖南省电力有限公司 | A kind of intensive style DC de-icing device protection TT&C system |
| CN114530814A (en) * | 2022-04-15 | 2022-05-24 | 西南交通大学 | Direct-current ice melting system for electrified railway contact network and control method thereof |
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| CN101847856A (en) * | 2010-05-13 | 2010-09-29 | 湖南省电力公司试验研究院 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
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| CN204481445U (en) * | 2015-04-16 | 2015-07-15 | 国家电网公司 | Ice-melting device for transmission line |
| CN206908255U (en) * | 2017-07-21 | 2018-01-19 | 国网湖南省电力公司 | The intensive DC de-icing device topological structure of wind power plant |
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Patent Citations (7)
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| CN101540491A (en) * | 2009-03-06 | 2009-09-23 | 南方电网技术研究中心 | Setting method of DC de-icing major loop |
| CN101847856A (en) * | 2010-05-13 | 2010-09-29 | 湖南省电力公司试验研究院 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
| CN202260347U (en) * | 2011-09-20 | 2012-05-30 | 湖南省电力公司科学研究院 | Direct current ice melting device of ultra high voltage power transmission line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108899852A (en) * | 2018-08-24 | 2018-11-27 | 国网湖南省电力有限公司 | A kind of intensive style DC de-icing device protection TT&C system |
| CN114530814A (en) * | 2022-04-15 | 2022-05-24 | 西南交通大学 | Direct-current ice melting system for electrified railway contact network and control method thereof |
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| Publication number | Publication date |
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| CN107196262B (en) | 2018-12-18 |
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