CN107124008A - Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant - Google Patents
Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant Download PDFInfo
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- CN107124008A CN107124008A CN201710228303.2A CN201710228303A CN107124008A CN 107124008 A CN107124008 A CN 107124008A CN 201710228303 A CN201710228303 A CN 201710228303A CN 107124008 A CN107124008 A CN 107124008A
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- 230000005611 electricity Effects 0.000 claims description 7
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Classifications
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- H02J3/386—
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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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- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses Wind turbines in a kind of wind power plant and the idle cooperative control method of SVG equipment, target reactive power Δ Q including obtaining wind power plant, and controlled SVG equipment progress Reactive-power control to the reactive power of wind power plant to reach described target reactive power Δ Q first according to target reactive power Δ Q, then the blower fan of control Wind turbines replaces SVG equipment and carries out idle exert oneself, or control blower fan additional issue reactive power, to replace idle the exerting oneself of part SVG equipment.In the present invention, with reference to the different adjustment amplitude and governing speed of Wind turbines and SVG, first it is adjusted by SVG, progressively replace SVG reactive power with the reactive power of Wind turbines again, to reduce SVG active loss, and SVG dynamic reactive deposit is kept, so as to reduce wind power plant internal power consumption in the case where meeting pressure regulation requirement.
Description
Technical field
The invention belongs to field of power system control, it is related to Wind turbines and the idle association of SVG equipment in a kind of wind power plant
Same control method.
Background technology
At present, the idle control of wind power plant is typically completed by SVG, SVG fast response times, and degree of regulation is high, but SVG is adjusted
Active loss is had when saving idle, and SVG belongs to dynamic reactive adjustment equipment, it should its reactive reserve is kept, to tackle failure
Under Reactive-power control demand.
To reduce SVG active loss, SVG reactive reserve is kept, Wind turbines regulation performance is improved, it is necessary to wind-powered electricity generation
The idle carry out Collaborative Control of unit and SVG.
In view of this, it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art that there is provided Wind turbines in a kind of wind power plant
With the idle cooperative control method of SVG equipment, this method combination Wind turbines and SVG different adjustment amplitude and governing speed,
First it is adjusted by SVG, then progressively uses the reactive power of Wind turbines to replace SVG reactive power, reduces SVG active damage
Consumption, and SVG dynamic reactive deposit is kept, so as to reduce wind power plant internal power damage in the case where meeting pressure regulation requirement
Consumption.
In order to solve the above technical problems, the present invention is using the basic conception of technical scheme：
Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant, including obtain the target of wind power plant
Reactive power Δ Q, and it is idle to wind power plant according to target reactive power Δ Q to control SVG equipment to carry out Reactive-power control first
Power reaches described target reactive power Δ Q, then controls the blower fan replacement SVG equipment progress of Wind turbines is idle to exert oneself,
Or control blower fan additional issue reactive power, to replace idle the exerting oneself of part SVG equipment.
In such scheme, after the reactive power of wind power plant reaches described target reactive power Δ Q, wind is then controlled
The blower fan replacement SVG equipment progress of group of motors is idle to exert oneself, or control blower fan additional issue reactive power, to replace part SVG equipment
Idle exert oneself so as to maintain SVG dynamic reactive deposit, to tackle the Reactive-power control demand under failure.
It is preferred that, Reactive-power control to the reactive power of wind power plant that described control SVG equipment is carried out reaches described mesh
Reactive power Δ Q is marked, including according to the Reactive-power control ability of SVG equipment, distributes SVG equipment Reactive-power control amounts.
It is preferred that, the Reactive-power control ability according to SVG equipment, distribution SVG equipment Reactive-power control amounts include：Judge
The reactive reserve Q of SVG equipmentCCWhether enough, if the determination result is YES, then distribute SVG equipment and carry out Reactive-power control according to Δ Q,
If judged result is no, distribution SVG equipment carries out Reactive-power control according to current full hair value is carried out.
It is preferred that, the reactive reserve Q of described SVG equipmentCCObtained by below equation：
QCC=QN-QSVG；Wherein, QSVGIt is the upper cycle sampling value of SVG equipment, QNFor the specified appearance of SVG equipment
Amount；
Described target reactive power Δ Q is calculated by below equation：
Wherein, V0It is current voltage, V1It is target voltage, VSIt is system side voltage, X∑It is equivalent impedance, θ is generator rotor angle.
The reactive reserve Q of described SVG equipmentCCWhether Q is passed through enoughCCJudge with Δ Q magnitude relationship, if QCC≥ΔQ
Then judged result is yes, if QCCThen judged result is no to ＜ Δs Q.
It is preferred that, after the reactive power of wind power plant reaches described target reactive power Δ Q, according to the blower fan of wind power plant
Reactive reserve distribution wind power plant blower fan Reactive-power control amount.
It is preferred that, the Reactive-power control amount bag of the blower fan of the reactive reserve distribution wind power plant of the blower fan according to wind power plant
Include：
The reactive reserve amount of the blower fan of wind power plant is obtained, judges whether the reactive reserve of the blower fan of electric field is enough, if judging
As a result it is yes, then according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated idle
Power sum is equal to target reactive power Δ Q, if judged result is no, and distribution is that full hair value carries out idle adjust per Fans
Section；
It is preferred that, the described order that sets is the sort descending that is carried out according to the reactive reserve amount of each blower fan.
In such scheme, the sort descending that the described reactive reserve amount for setting order as each blower fan is carried out, so that
The idle of each blower fan that weighed is exerted oneself.
It is preferred that, whether the reactive reserve of the blower fan of described electric field is enough, passes through the total reactive reserve Q of Wind turbinesWT
Judge with Δ Q magnitude relationship, if QWT>=Δ Q, then judged result is yes, that is, judges that the reactive reserve of Wind turbines meets wind-powered electricity generation
The reactive requirement of field, otherwise, judged result is no, that is, judges the reactive reserve of Wind turbines and can not meet the idle need of wind power plant
Ask；
Wherein, the total reactive reserve of described Wind turbines is obtained by below equation：
Wherein, n is the start number of units of wind-powered electricity generation airport apoplexy machine, PiFor the active power of the i-th Fans, QiFor the i-th Fans
Reactive power, wind power factor according to 0.95 consider.
It is preferred that, in the present invention, Wind turbines and the idle cooperative control method of SVG equipment in wind power plant, including it is following
Step：
S1, the target reactive power Δ Q for obtaining wind power plant；
S2, the reactive reserve Q for calculating SVG equipmentWT；
Q in S3, Δ Q and step S2 in step S1WTJudge whether the reactive reserve of SVG equipment is enough, if sentencing
Disconnected result is yes, then into step S4, otherwise into step S5；
S4, control SVG equipment carry out reactive-load compensation according to Δ Q, and target reactive power is reached in the reactive power of wind power plant
After Δ Q, into step S6；
S5, control SVG equipment reach target reactive power Δ according to full hair value reactive-load compensation in the reactive power of wind power plant
After Q, into step S6；
S6, control Wind turbines blower fan replace SVG equipment carry out it is idle exert oneself, or control blower fan additional issue reactive power,
To replace idle the exerting oneself of part SVG equipment；
Whether S7, monitoring network voltage meet the requirements, if judged result is no, into step S1.
It is preferred that, it is in step s 6, further comprising the steps of：
S101, the blower fan of acquisition wind power plant reactive reserve, judge whether the reactive reserve of the blower fan of electric field is enough, if sentencing
Disconnected result is yes, then into step S102, if judged result is no, into step S103
S102, according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated nothing
Work(power sum is equal to target reactive power Δ Q；
S103, distribution are that full hair value carries out Reactive-power control per Fans.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
In the present invention, with reference to the different adjustment amplitude and governing speed of Wind turbines and SVG, first it is adjusted by SVG, then
SVG reactive power progressively is replaced with the reactive power of Wind turbines, to reduce SVG active loss, and keeps SVG's dynamic
State reactive reserve, so as to reduce wind power plant internal power consumption in the case where meeting pressure regulation requirement.
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Accompanying drawing is as the part of the present invention, and for providing further understanding of the invention, of the invention is schematic
Embodiment and its illustrate to be used to explain the present invention, but do not constitute inappropriate limitation of the present invention.Obviously, drawings in the following description
Only some embodiments, to those skilled in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is Wind turbines and the idle cooperative control method schematic diagram of SVG equipment in wind power plant of the present invention.
It should be noted that these accompanying drawings and word description are not intended as the design model for limiting the present invention in any way
Enclose, but be that those skilled in the art illustrate idea of the invention by reference to specific embodiment.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in embodiment is clearly and completely described, following examples be used for illustrate the present invention, but
It is not limited to the scope of the present invention.
It is term " on ", " under ", "front", "rear", "left", "right", " perpendicular in the description of the invention, it is necessary to explanation
Directly ", the orientation or position relationship of the instruction such as " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant, including obtain the target of wind power plant
Reactive power Δ Q, and it is idle to wind power plant according to target reactive power Δ Q to control SVG equipment to carry out Reactive-power control first
Power reaches described target reactive power Δ Q, then controls the blower fan replacement SVG equipment progress of Wind turbines is idle to exert oneself,
Or control blower fan additional issue reactive power, to replace idle the exerting oneself of part SVG equipment.
In such scheme, after the reactive power of wind power plant reaches described target reactive power Δ Q, wind is then controlled
The blower fan replacement SVG equipment progress of group of motors is idle to exert oneself, or control blower fan additional issue reactive power, to replace part SVG equipment
Idle exert oneself so as to maintain SVG dynamic reactive deposit, to tackle the Reactive-power control demand under failure.The target of the present invention
It is, when voltage is raised or broken down, because the deposit of SVG equipment is more, governing speed is fast, then is first carried out by SVG equipment
Regulation, then progressively use the reactive power of Wind turbines to replace SVG reactive power, to reduce the active loss of SVG equipment, and
The dynamic reactive deposit of SVG equipment is kept, so as to reduce wind power plant internal power consumption in the case where meeting pressure regulation requirement.
It is preferred that, Reactive-power control to the reactive power of wind power plant that described control SVG equipment is carried out reaches described mesh
Reactive power Δ Q is marked, including according to the Reactive-power control ability of SVG equipment, distributes SVG equipment Reactive-power control amounts.
It is preferred that, the Reactive-power control ability according to SVG equipment, distribution SVG equipment Reactive-power control amounts include：Judge
The reactive reserve Q of SVG equipmentCCWhether enough, if the determination result is YES, then distribute SVG equipment and carry out Reactive-power control according to Δ Q,
If judged result is no, distribution SVG equipment carries out Reactive-power control according to current full hair value is carried out.
It is preferred that, the reactive reserve Q of described SVG equipmentCCObtained by below equation：
QCC=QN-QSVGWherein, QSVGIt is the upper cycle sampling value of SVG equipment, QNFor the specified appearance of SVG equipment
Amount；
Described target reactive power Δ Q is calculated by below equation：
Wherein, V0It is current voltage, V1It is target voltage, VSIt is system side voltage, X∑It is equivalent impedance, θ is generator rotor angle.
The reactive reserve Q of described SVG equipmentCCWhether Q is passed through enoughCCJudge with Δ Q magnitude relationship, if QCC≥ΔQ
Then judged result is yes, if QCCThen judged result is no to ＜ Δs Q.
It is preferred that, after the reactive power of wind power plant reaches described target reactive power Δ Q, according to the blower fan of wind power plant
Reactive reserve distribution wind power plant blower fan Reactive-power control amount.
It is preferred that, the Reactive-power control amount bag of the blower fan of the reactive reserve distribution wind power plant of the blower fan according to wind power plant
Include：
The reactive reserve amount of the blower fan of wind power plant is obtained, judges whether the reactive reserve of the blower fan of electric field is enough, if judging
As a result it is yes, then according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated idle
Power sum is equal to target reactive power Δ Q, if judged result is no, and distribution is that full hair value carries out idle adjust per Fans
Section；
It is preferred that, the described order that sets is the sort descending that is carried out according to the reactive reserve amount of each blower fan.
In such scheme, the sort descending that the described reactive reserve amount for setting order as each blower fan is carried out, so that
The idle of each blower fan that weighed is exerted oneself.
It is preferred that, whether the reactive reserve of the blower fan of described electric field is enough, passes through the total reactive reserve Q of Wind turbinesWT
Judge with Δ Q magnitude relationship, if QWT>=Δ Q, then judged result is yes, that is, judges that the reactive reserve of Wind turbines meets wind-powered electricity generation
The reactive requirement of field, otherwise, judged result is no, that is, judges the reactive reserve of Wind turbines and can not meet the idle need of wind power plant
Ask；
Wherein, the total reactive reserve of described Wind turbines is obtained by below equation：
Wherein, n is the start number of units of wind-powered electricity generation airport apoplexy machine, PiFor the active power of the i-th Fans, QiFor the i-th Fans
Reactive power, wind power factor according to 0.95 consider.
It is preferred that, shown in Figure 1, Wind turbines and the idle Collaborative Control side of SVG equipment in wind power plant of the invention
The execution step of method, gets target reactive power Δ Q first, then judges whether the reactive reserve of SVG equipment is enough, if sentencing
Disconnected result is yes, then carries out reactive-load compensation by SVG equipment, after the reactive power of wind power plant reaches target reactive power Δ Q, then
Control blower fan to replace SVG equipment and carry out reactive-load compensation, keep SVG reactive reserve, and if judged result is no, set by SVG
Standby and blower fan carries out reactive-load compensation jointly, after the reactive power of wind power plant reaches target reactive power Δ Q, is then replaced by blower fan
Do not seal SVG equipment carry out it is idle exert oneself, to keep SVG reactive reserve, finally, whether monitoring net piezoelectric voltage meets the requirements, if
Judged result is yes, then control terminates, if judging, structure is no, re-starts said process.
Specifically, in the present invention, Wind turbines and the idle cooperative control method of SVG equipment in wind power plant, including it is following
Step：
S1, the target reactive power Δ Q for obtaining wind power plant；
Wherein, described target reactive power Δ Q is calculated by below equation：
Wherein, V0It is current voltage, V1It is target voltage, VSIt is system side voltage, X∑It is equivalent impedance, θ is generator rotor angle.
S2, the reactive reserve Q for calculating SVG equipmentCC；
Wherein, QCC=QN-QSVG；Wherein, QSVGIt is the upper cycle sampling value of SVG equipment, QNFor the volume of SVG equipment
Constant volume.
Q in S3, Δ Q and step S2 in step S1CCJudge whether the reactive reserve of SVG equipment is enough, if sentencing
Disconnected result is yes, then into step S4, otherwise into step S5；
Wherein, the reactive reserve Q of described SVG equipmentCCWhether Q is passed through enoughCCJudge with Δ Q magnitude relationship, if QCC
Then judged result is yes to >=Δ Q, if QCCThen judged result is no to ＜ Δs Q.
S4, control SVG equipment carry out reactive-load compensation according to Δ Q, and target reactive power is reached in the reactive power of wind power plant
After Δ Q, into step S6；
S5, control SVG equipment reach target reactive power Δ according to full hair value reactive-load compensation in the reactive power of wind power plant
After Q, into step S6；
S6, control Wind turbines blower fan replace SVG equipment carry out it is idle exert oneself, or control blower fan additional issue reactive power,
To replace idle the exerting oneself of part SVG equipment；
Whether S7, monitoring network voltage meet the requirements, if judged result is no, into step S1.
It is preferred that, it is in step s 6, further comprising the steps of：
S101, the blower fan of acquisition wind power plant reactive reserve, judge whether the reactive reserve of the blower fan of electric field is enough, if sentencing
Disconnected result is yes, then into step S102, if judged result is no, into step S103；
Whether the reactive reserve of the blower fan of described electric field is enough, passes through the total reactive reserve Q of Wind turbinesWTWith Δ Q's
Magnitude relationship judges, if QWT>=Δ Q, then judged result is yes, and otherwise, judged result is no；
Wherein, the total reactive reserve of described Wind turbines is obtained by below equation：
Wherein, n is the start number of units of wind-powered electricity generation airport apoplexy machine, PiFor the active power of the i-th Fans, QiFor the i-th Fans
Reactive power, wind power factor according to 0.95 consider.
S102, according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated nothing
Work(power sum is equal to target reactive power Δ Q；
It is preferred that, the described order that sets is the sort descending that is carried out according to the reactive reserve amount of each blower fan.
In such scheme, the described order that sets as the sort descending that is carried out according to the reactive reserve amount of each blower fan, from
And balanced the idle of each blower fan is exerted oneself.
S103, distribution are that full hair value carries out Reactive-power control per Fans.
In the present invention, with reference to the different adjustment amplitude and governing speed of Wind turbines and SVG, first it is adjusted by SVG, then
SVG reactive power progressively is replaced with the reactive power of Wind turbines, to reduce SVG active loss, and keeps SVG's dynamic
State reactive reserve, so as to reduce wind power plant internal power consumption in the case where meeting pressure regulation requirement.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent variations and modification that above example is made, in the range of still falling within the present invention program.
Claims (10)
1. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant, it is characterised in that obtain wind power plant
Target reactive power Δ Q, and control SVG equipment to carry out Reactive-power control to wind power plant first according to target reactive power Δ Q
Reactive power reaches described target reactive power Δ Q, then control Wind turbines blower fan replace SVG equipment carry out it is idle go out
Power, or control blower fan additional issue reactive power, to replace idle the exerting oneself of part SVG equipment.
2. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 1, it is special
Levy and be, Reactive-power control to the reactive power of wind power plant that described control SVG equipment is carried out reaches the described idle work(of target
Rate Δ Q, including according to the Reactive-power control ability of SVG equipment, distribute SVG equipment Reactive-power control amounts.
3. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 2, it is special
Levy and be, the Reactive-power control ability according to SVG equipment, distribution SVG equipment Reactive-power control amounts include：Judge SVG equipment
Reactive reserve QCCWhether enough, if the determination result is YES, then distribute SVG equipment and carry out Reactive-power control according to Δ Q, if judging knot
Fruit is no, then distributes SVG equipment according to current full hair value is carried out and carry out Reactive-power control.
4. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 3, it is special
Levy and be, the reactive reserve Q of described SVG equipmentCCObtained by below equation：
QCC=QN-QSVG；Wherein, QSVGIt is the upper cycle sampling value of SVG equipment, QNFor the rated capacity of SVG equipment；
Described target reactive power Δ Q is calculated by below equation：
Wherein, V0It is current voltage, V1It is target voltage, VSIt is system side voltage, X∑It is equivalent impedance, θ is generator rotor angle；
The reactive reserve Q of described SVG equipmentCCWhether Q is passed through enoughCCJudge with Δ Q magnitude relationship, if QCC>=Δ Q then sentences
Disconnected result is yes, if QCCThen judged result is no to ＜ Δs Q.
5. according to Wind turbines and the idle Collaborative Control side of SVG equipment in a kind of any described wind power plants of claim 1-4
Method, it is characterised in that after the reactive power of wind power plant reaches described target reactive power Δ Q, according to the blower fan of wind power plant
Reactive reserve distribution wind power plant blower fan Reactive-power control amount.
6. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 5, it is special
Levy and be, the Reactive-power control amount of the blower fan of the reactive reserve distribution wind power plant of the blower fan according to wind power plant includes：
The reactive reserve amount of the blower fan of wind power plant is obtained, judges whether the reactive reserve of the blower fan of electric field is enough, if judged result
It is yes, then according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated reactive power
Sum is equal to target reactive power Δ Q, if judged result is no, and distribution is that full hair value carries out Reactive-power control per Fans.
7. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 6, it is special
Levy and be, the described order that sets is the sort descending that is carried out according to the reactive reserve amount of each blower fan.
8. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 6 or 7,
Characterized in that, whether the reactive reserve of the blower fan of described electric field is enough, pass through the total reactive reserve Q of Wind turbinesWTWith Δ Q
Magnitude relationship judge, if QWT>=Δ Q, then judged result is yes, and otherwise, judged result is no；
Wherein, the total reactive reserve of described Wind turbines is obtained by below equation：
Wherein, n is the start number of units of wind-powered electricity generation airport apoplexy machine, PiFor the active power of the i-th Fans, QiFor the nothing of the i-th Fans
Work(power, wind power factor considers according to 0.95.
9. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 1, including
Following steps：
S1, the target reactive power Δ Q for obtaining wind power plant；
S2, the reactive reserve Q for calculating SVG equipmentCC；
Q in S3, Δ Q and step S2 in step S1CCJudge whether the reactive reserve of SVG equipment is enough, if judging knot
Fruit is yes, then into step S4, otherwise into step S5；
S4, control SVG equipment carry out reactive-load compensation according to Δ Q, and target reactive power Δ Q is reached in the reactive power of wind power plant
Afterwards, into step S6；
S5, control SVG equipment are according to full hair value reactive-load compensation, after the reactive power of wind power plant reaches target reactive power Δ Q,
Into step S6；
S6, control Wind turbines blower fan replace SVG equipment carry out it is idle exert oneself, or control blower fan additional issue reactive power, with for
Change idle the exerting oneself of part SVG equipment；
Whether S7, monitoring network voltage meet the requirements, if judged result is no, into step S1.
10. Wind turbines and the idle cooperative control method of SVG equipment in a kind of wind power plant according to claim 9, its
It is characterised by, it is in step s 6, further comprising the steps of：
S101, the blower fan of acquisition wind power plant reactive reserve, judge whether the reactive reserve of the blower fan of electric field is enough, if judging knot
Fruit is yes, then into step S102, if judged result is no, into step S103；
S102, according to setting order, distribution wind turbine carries out Reactive-power control for current full hair value, until allocated idle work(
Rate sum is equal to target reactive power Δ Q；
S103, distribution are that full hair value carries out Reactive-power control per Fans.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493948A (en) * | 2018-04-13 | 2018-09-04 | 江苏方天电力技术有限公司 | A kind of Multiple Time Scales coordination voltage powerless control method |
| CN108879716A (en) * | 2018-07-16 | 2018-11-23 | 内蒙古工业大学 | The reactive coordination control method and system of direct-drive permanent-magnetism blower |
| CN114696372A (en) * | 2022-03-14 | 2022-07-01 | 国网湖北省电力有限公司电力科学研究院 | Wind power plant optimization method considering reactive resource allocation priority |
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| CN105720611A (en) * | 2014-12-01 | 2016-06-29 | 国家电网公司 | Reactive power control method and system for wind power plant |
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| CN105720611A (en) * | 2014-12-01 | 2016-06-29 | 国家电网公司 | Reactive power control method and system for wind power plant |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493948A (en) * | 2018-04-13 | 2018-09-04 | 江苏方天电力技术有限公司 | A kind of Multiple Time Scales coordination voltage powerless control method |
| CN108493948B (en) * | 2018-04-13 | 2021-06-29 | 江苏方天电力技术有限公司 | Multi-time scale coordinated voltage reactive power control method |
| CN108879716A (en) * | 2018-07-16 | 2018-11-23 | 内蒙古工业大学 | The reactive coordination control method and system of direct-drive permanent-magnetism blower |
| CN108879716B (en) * | 2018-07-16 | 2022-11-22 | 内蒙古工业大学 | Reactive coordination control method and system for direct-drive permanent magnet fan |
| CN114696372A (en) * | 2022-03-14 | 2022-07-01 | 国网湖北省电力有限公司电力科学研究院 | Wind power plant optimization method considering reactive resource allocation priority |
| CN114696372B (en) * | 2022-03-14 | 2024-03-19 | 国网湖北省电力有限公司电力科学研究院 | Wind farm optimization method considering reactive resource allocation priority |
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