CN105914779B - A kind of Wind turbines participate in the control method for coordinating of electric system Automatic Generation Control - Google Patents
A kind of Wind turbines participate in the control method for coordinating of electric system Automatic Generation Control Download PDFInfo
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Abstract
The invention discloses the control method for coordinating that a kind of Wind turbines participate in electric system Automatic Generation Control, including step:Wind power plant uploads the real-time ultra-short term predicted value contributed with wind power output of Wind turbines to provincial dispatching center;Provincial dispatching center calculates the local Wind turbines pondage and creep speed that may participate in Automatic Generation Control;Subdispatch center calculates the regulation power of Wind turbines and conventional rack using Model Predictive Control;Provincial dispatching center is divided in portion regulation power;Wind power plant adjusts wind-powered electricity generation active power output by wind power plant AGC system.The invention has the advantages that:By subdispatch center, provincial dispatching center, wind power plant it is mutually coordinated, effectively assessment Wind turbines participate in the pondage and regulation performance of electric system Automatic Generation Control, fully consider the operation characteristic and regulating power of all kinds of frequency modulation resources in electric system, realize that Wind turbines participate in electric system Automatic Generation Control, lifting system stability and economy.
Description
Technical field
The invention belongs to electric system Automatic Generation Control fields, and in particular to a kind of Wind turbines participate in electric system from
The control method for coordinating of dynamic Generation Control.
Background technology
Power system frequency is the important indicator of power quality, and that reflects the balances between power generation active power and load
Relationship.In order to ensure the frequency stabilization of system, meet the needs of user equipment, power plant equipment and electric system normal operation,
Electric system Automatic Generation Control (Automation Generation Control, AGC) is widely used, to adjust power generation
Unit output meets continually changing user demand.
In recent years, under the dual promotion of energy crisis and environmental protection pressure, the new energy power generation technologies such as wind-powered electricity generation, solar energy hair
Exhibition is swift and violent, and the new energy ratio in electric system is continuously improved.However, due to the generations of electricity by new energy such as wind-powered electricity generation have fluctuation, with
Generation of electricity by new energy is mostly regarded as " bearing " load processing at present in electric power system dispatching field, is by conventional rack by the features such as machine
Its provide it is spare go out fluctuation to compensate it, this will cause system frequency modulation demand rising and frequency modulation unit abrasion exacerbation, carry
The investment cost and operating cost of high electric system.In addition, in the northern area of China, when Wind turbines enter big hair more than winter
Phase, but influenced at this time by heat demand etc., the frequency regulation capacity shortage of electric system, further decreasing electric system can to intermittence
The receiving ability of the renewable sources of energy leads to " abandoning wind " phenomenon occur, causes huge economic loss and environmental protection pressure, be unfavorable for country
The realization of energy-saving and emission-reduction and carbon emission reduction target.
With the continuous development of wind-power electricity generation control technology, Wind turbines receive dispatching of power netwoks instruction, participate in dispatching of power netwoks
The ability of operation is constantly promoted.Particularly, wind-powered electricity generation participation electric system Automatic Generation Control is possibly realized on hardware:According to system
Meter, at present in the wind power plant of China Ji Beidiqu, the ratio of installation wind power plant AGC system alreadys exceed 70%, scheduling at different levels
Unit had configured adaptable scheduling system already.Consider under the conditions of due to limiting wind caused by peak regulation difficulty, if wind power output
Still have with profile constraints it is more than needed, can constrain its frequency modulation contribute be more than zero under the premise of make Wind turbines participate in electric system it is automatic
Generation Control realizes the additional issue of Wind turbines, the stability of lifting system operation while promoting electric system frequency modulation performance
And economy.
However, the performance that Wind turbines participate in electric system Automatic Generation Control will be influenced by following factor:Wind-powered electricity generation
The frequency modulation output upper limit of unit is constrained by the wind power output upper limit, although the ultra-short term precision of prediction of wind power output constantly carries at present
It rises, but it still has certain error;Different from conventional rack, the creep speed of Wind turbines is not constant, is gone out with wind-powered electricity generation maximum
Power changes and changes;To realize that the purpose of wind-powered electricity generation additional issue, wind-powered electricity generation its frequency modulation when participating in electric system Automatic Generation Control are contributed
Zero should be consistently greater than.It is thus impossible to which simply Wind turbines and conventional rack are made no exception, it is directly brought into existing AGC
In system.
Invention content
The present invention is directed at least solve one of above-mentioned technical problem.
For this purpose, an object of the present invention is to provide the associations that a kind of Wind turbines participate in electric system Automatic Generation Control
Control method.
To achieve the goals above, embodiment of the invention discloses that a kind of Wind turbines participate in electric system automatic generation
The control method for coordinating of control, includes the following steps:S1:Wind power plant uploads the real-time output of Wind turbines to provincial dispatching center
With the ultra-short term predicted value of wind power output;S2:The provincial dispatching center is according to profile constraints information and wind power plant unit performance
Information calculates the local Wind turbines pondage and creep speed that may participate in Automatic Generation Control;S3:Subdispatch
Center considers that Wind turbines participate in the characteristic peace treaty of electric system Automatic Generation Control with conventional rack according to district control deviation
Beam calculates the regulation power of Wind turbines and conventional rack using Model Predictive Control;S4:The provincial dispatching center is according to each
The pondage of wind power plant is divided in portion regulation power;And S5:Wind power plant is active by wind power plant AGC system adjustment wind-powered electricity generation
It contributes, realizes the response to adjusting power instruction.
Wind turbines according to the ... of the embodiment of the present invention participate in the control method for coordinating of electric system Automatic Generation Control, fully
Consider that Wind turbines participate in characteristic and the constraint of electric system Automatic Generation Control with conventional rack, is promoting electric system frequency modulation
While performance, the additional issue of Wind turbines is realized, promote the stability and economy of Operation of Electric Systems.
In addition, Wind turbines according to the above embodiment of the present invention participate in the coordination control of electric system Automatic Generation Control
Method can also have following additional technical characteristic:
Further, in step sl, the real-time output P of the Wind turbinesW,i, i=1,2 ..., N, wind power output
Ultra-short term predicted value PF,i(t), i=1,2 ..., N, t=1,2 ..., P, wherein N is the local installation of provincial dispatching center
The wind-powered electricity generation number of AGC system, P are the prediction time domain length that subdispatch center executes Model Predictive Control.
Further, step S2 further comprises:
S201:It is calculated by the following formula the local Wind turbines pondage that may participate in Automatic Generation Control:
Wherein,SkIt is adjusted up capacity and section capacity-constrained, N under respectively section kW,kAnd NG,kRespectively
For the wind-powered electricity generation number of fields and conventional power plant number under section k, PG,iIt contributes in real time for conventional power unit, J is section sum, PC,iNot consider
Wind turbines participate in the active power instruction under the conditions of wind power plant limit wind when Automatic Generation Control;And
S202:It is calculated by the following formula the local creep speed that may participate in Automatic Generation Control:
Wherein,The upward creep speed and downward creep speed of respectively each wind power plant, it is described to
Upper creep speed and the downward creep speed with the ultra-short term predicted value P of wind power outputF,i(t) related.
Further, step S3 further comprises:S301:According to current frequency deviation f and Tie line Power
Deviation delta PtieZoning control deviation ACE:ACE=B Δ f+ Δs Ptie, wherein B is system frequency deviation coefficient;S302:
Near Operation of Electric Systems point, linearization process is carried out to region difference control process, based on conventional rack and Wind turbines
The state space equation of electric system region difference control process dynamics mathematical model is written as shape by dynamic mathematical models
Formula:Y=Cx, wherein x represents state variable vector, and u represents input variable vector, and W represents disturbance quantity
Vector, Y represent output quantity vector, and A represents the state matrix of the system, and B represents the input matrix of the system, and R represents disturbance square
Battle array, C represent output matrix;State space equation is subjected to sliding-model control, electric system region difference control is obtained and crosses number of passes
Learn the discrete form of model:
X (k+1)=Adx(k)+Bdu(k)+RdW(k)
The expression formula of each matrix is as follows in above formula:
Wherein, TsFor the sampling time of discrete system;S303:Determine Controlling object function such as following formula:
Wherein, QG、QW、RG、RWRespectively conventional rack quantity of state, Wind turbines quantity of state, conventional rack controlled quentity controlled variable and wind
The weight matrix of motor group controlled quentity controlled variable, M are the control time domain length of Model Predictive Control;S304:Determine that constraints is as follows:
X (k+i+1 | k)=Adx(k+i|k)+Bdu(k+i|k)+RdW (k+i | k), i >=0
It indicates, the linear prediction model of electric system region difference control process;
uG min≤uG(k+i|k)≤uG max, i=0 ..., M-1
uw min≤uw(k+i|k)≤uw max, i=0 ..., M-1
It indicates, conventional rack controlled quentity controlled variable is controlled by it the constraint in section with Wind turbines controlled quentity controlled variable;
xG min≤xG(k+i|k)≤xG max, i=1 ..., P
xw min≤xw(k+i|k)≤xw max, i=1 ..., P
It indicates, conventional rack quantity of state is constrained by its pondage with Wind turbines state;
ΔxG min≤ΔxG(k+i|k)≤ΔxG max, i=1 ..., P
ΔxW min≤Δxw(k+i|k)≤Δxw max, i=1 ..., P
It indicates, conventional rack quantity of state increment is constrained by its creep speed with Wind turbines quantity of state increment.S305:
It is solved according to active constraint set algorithm, calculates the conventional rack regulation power and the Wind turbines regulation power.
Further, further comprising the steps of after step S305:S306:To the conventional rack regulation power and institute
It states Wind turbines regulation power and carries out feedback compensation and rolling optimization;S307:By the conventional rack regulation power and the wind
Motor group regulation power is handed down to the provincial dispatching center, is allocated to regulation power by the provincial dispatching center, and
It is issued to each wind power plant.
Further, in step s 4, the provincial dispatching center passes through following public affairs according to the pondage of each wind power plant
Formula is divided in portion regulation power Aw:
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein:
Fig. 1 is that the Wind turbines of one embodiment of the invention participate in electric system Automatic Generation Control control method for coordinating
Flow chart;
Fig. 2 is that the Wind turbines of one embodiment of the invention participate in the physical structure figure of electric system Automatic Generation Control;
Fig. 3 is that the Wind turbines of one embodiment of the invention participate in electric system Automatic Generation Control coordination control strategy
Functional block diagram.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can
Can also be electrical connection to be mechanical connection;It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
With reference to following description and drawings, it will be clear that these and other aspects of the embodiment of the present invention.In these descriptions
In attached drawing, some particular implementations in the embodiment of the present invention are specifically disclosed, to indicate to implement the implementation of the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen within the scope of the spirit and intension of attached claims.
Wind turbines according to the ... of the embodiment of the present invention, which are described, below in conjunction with attached drawing participates in electric system Automatic Generation Control
Control method for coordinating.
Please referring to Fig.1-3, a kind of Wind turbines participate in the control method for coordinating of electric system Automatic Generation Control, including with
Lower step:
S1:Real-time contribute that wind power plant uploads Wind turbines to provincial dispatching center is predicted with the ultra-short term of wind power output
Value.
Specifically, before each AGC instruction cycle T starts, each wind power plant calling module 1 and module 2 monitor wind turbine
The real-time output P of groupW,i(MW), i=1,2 ..., N calculate the ultra-short term predicted value P of wind power outputF,i(t), i=1,2 ...,
N, t=1,2 ..., P, wherein N is the wind-powered electricity generation number of the local installation AGC system of provincial dispatching center, and P is subdispatch
Center executes the prediction time domain length of Model Predictive Control.Calling module 3 reports above- mentioned information to provincial dispatching center.
S2:Provincial dispatching center calculates local may participate according to profile constraints information and wind power plant unit performance information
To the Wind turbines pondage and creep speed of Automatic Generation Control.
Specifically, after provincial dispatching center receives the information of its local all wind power plant, calling module 4 is read
Profile constraints information and wind power plant unit performance information, calling module 5 calculate the local wind that may participate in Automatic Generation Control
Motor group pondage and creep speed, steps are as follows for specific calculating:
S201:Calculate the pondage that local Wind turbines participate in Automatic Generation Control.According to the real-time of Wind turbines
Contribute, the prediction of the ultra-short term of wind power output and profile constraints, calculate local Wind turbines participate in Automatic Generation Control to
Upper pondageDownward pondage
Wherein,SkIt is adjusted up capacity (MW) and section capacity-constrained (MW), N under respectively section kW,kWith
NG,kWind-powered electricity generation number of fields under respectively section k and conventional power plant number, PG,iIt contributing in real time (MW) for conventional power unit, J is section sum,
PC,iWind power plant limits the active power instruction (MW) under the conditions of wind when not consider that Wind turbines participate in Automatic Generation Control.
S202:Calculate the creep speed that local Wind turbines participate in Automatic Generation Control.It may participate according to local
The Wind turbines pondage and wind power plant unit performance of Automatic Generation Control calculate local wind power plant and participate in automatic generation control
The upward creep speed of systemWith upward creep speed
Wherein,The upward creep speed and downward creep speed of respectively each wind power plant, with
The ultra-short term predicted value P of wind power outputF,i(t) related.
S3:Subdispatch center considers that Wind turbines participate in electric system certainly with conventional rack according to district control deviation
The characteristic of dynamic Generation Control and constraint, the regulation power of Wind turbines and conventional rack is calculated using Model Predictive Control.Step
S3 includes the following steps:
S301:Zoning control deviation ACE.According to current frequency deviation f and Tie line Power deviation delta
PtieZoning control deviation ACE:
ACE=B Δ f+ Δs Ptie
Wherein, B is system frequency deviation coefficient (MW/Hz).
S302:Calculate the prediction model of electric system region difference control process.Near Operation of Electric Systems point, to area
Domain deviation control process carries out linearization process, the dynamic mathematical models based on conventional rack and Wind turbines, by electric system
The state space equation of region difference control process dynamics mathematical model is written as form:
Y=Cx
Wherein, x represents state variable vector, and u represents input variable vector, and W represents disturbance quantity vector, and Y represents output quantity
Vector, A represent the state matrix of the system, and B represents the input matrix of the system, and R represents perturbation matrix, and C represents output matrix.
Since the dynamic mathematical models of electric system region difference control process are continuous system model, and model prediction control
The prediction model used in system needs state space equation carrying out sliding-model control, obtains power train for discrete system model
The discrete form of system region difference control process mathematical model:
X (k+1)=Adx(k)+Bdu(k)+RdW(k)
The expression formula of each matrix is as follows in above formula:
Wherein, TsFor the sampling time of discrete system.
S303:Determine control targe.
Wherein, QG、QW、RG、RWRespectively conventional rack quantity of state, Wind turbines quantity of state, conventional rack controlled quentity controlled variable and wind
The weight matrix of motor group controlled quentity controlled variable, M are the control time domain length of Model Predictive Control.
S304:Determine constraints.
X (k+i+1 | k)=Adx(k+i|k)+Bdu(k+i|k)+RdW (k+i | k), i >=0
It indicates, the linear prediction model of electric system region difference control process.
uG min≤uG(k+i|k)≤uG max, i=0 ..., M-1
uw min≤uw(k+i|k)≤uw max, i=0 ..., M-1
It indicates, conventional rack controlled quentity controlled variable is controlled by it the constraint in section with Wind turbines controlled quentity controlled variable.
xG min≤xG(k+i|k)≤xG max, i=1 ..., P
xw min≤xw(k+i|k)≤xw max, i=1 ..., P
It indicates, the thin quantity of state of traditional machine is constrained by its pondage with the thin state of wind turbine.
ΔxG min≤ΔxG(k+i|k)≤ΔxG max, i=1 ..., P
ΔxW min≤Δxw(k+i|k)≤Δxw max, i=1 ..., P
It indicates, conventional rack quantity of state increment is constrained by its creep speed with Wind turbines quantity of state increment.
S305:Seek conventional rack regulation power and Wind turbines regulation power.The above-mentioned mathematical model established is practical to be
One quadratic programming problem can be solved using action constaint set scheduling algorithm.For the dynamic for realizing to target desired value
Tracing control also needs to carry out feedback compensation, rolling optimization.After the completion of solution, the conventional rack regulation power that should will be calculated
It is issued with Wind turbines regulation power, wherein Wind turbines regulation power should be issued to provincial dispatching center, by provincial tune
Degree center is allocated regulation power, and is issued to each wind power plant.
S4:Provincial dispatching center is divided in portion regulation power according to the pondage of each wind power plant.
Specifically, after provincial dispatching center receives the Wind turbines regulation power instruction issued, calling module 8, according to
The pondage proportional assignment regulation power A of each wind power plantw, it is issued to each wind power plant:
Particularly, in order to ensure the implementation effect of regulation power instruction, the good wind power plant of implementation effect is rewarded, is considered as
The response condition that each wind power plant instructs upper period regulation power can be distributed to preferentially pair for being adjusted up power instruction
Upper period regulation power instruction responds good wind power plant, and downward regulation power is instructed, can be proportionately distributed to all
Participate in the wind power plant of Automatic Generation Control.
S5:Wind power plant adjusts wind-powered electricity generation active power output by wind power plant AGC system, realizes the response to adjusting power instruction.
In addition, the Wind turbines of the embodiment of the present invention participate in its of the control method for coordinating of electric system Automatic Generation Control
It is constituted and effect is all known for a person skilled in the art, in order to reduce redundancy, is not repeated.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that:Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is by claim and its equivalent limits.
Claims (4)
1. a kind of Wind turbines participate in the control method for coordinating of electric system Automatic Generation Control, which is characterized in that including following
Step:
S1:Wind power plant uploads the real-time ultra-short term predicted value contributed with wind power output of Wind turbines, institute to provincial dispatching center
State the real-time output P of Wind turbinesW,i, i=1,2 ..., N, the ultra-short term predicted value P of wind power outputF,i(t), i=1,2 ...,
N, t=1,2 ..., P, wherein N is the wind-powered electricity generation number of the local installation AGC system of provincial dispatching center, and P is subdispatch
Center executes the prediction time domain length of Model Predictive Control;
S2:The provincial dispatching center calculates local may participate according to profile constraints information and wind power plant unit performance information
To the Wind turbines pondage and creep speed of Automatic Generation Control, step S2 further comprises:
S201:Be calculated by the following formula local Wind turbines participation Automatic Generation Control is adjusted up capacityWith
Downward pondage
Wherein,SkIt is adjusted up capacity and section capacity-constrained, N under respectively section kW,kAnd NG,kRespectively section
Wind-powered electricity generation number of fields under k and conventional power plant number, PG,iIt contributes in real time for conventional power unit, J is section sum, PC,iNot consider wind turbine
Group participates in the active power instruction under the conditions of wind power plant limit wind when Automatic Generation Control;And
S202:It is calculated by the following formula the local creep speed that may participate in Automatic Generation Control:
Wherein,The upward creep speed and downward creep speed of respectively each wind power plant, T control for AGC
Cycle length, the upward creep speed and the downward creep speed with the ultra-short term predicted value P of wind power outputF,i(t) phase
It closes;
S3:Subdispatch center considers that Wind turbines participate in electric system with conventional rack and send out automatically according to district control deviation
The characteristic of electric control and constraint calculate the regulation power of Wind turbines and conventional rack using Model Predictive Control;
S4:The provincial dispatching center is divided in portion regulation power according to the pondage of each wind power plant;And
S5:Wind power plant adjusts wind-powered electricity generation active power output by wind power plant AGC system, realizes the response to adjusting power instruction.
2. Wind turbines according to claim 1 participate in the control method for coordinating of electric system Automatic Generation Control, special
Sign is that step S3 further comprises:
S301:According to current frequency deviation f and Tie line Power deviation delta PtieZoning control deviation ACE:
ACE=B Δ f+ Δs Ptie
Wherein, B is system frequency deviation coefficient;
S302:Near Operation of Electric Systems point, to region difference control process carry out linearization process, based on conventional rack with
The dynamic mathematical models of Wind turbines write the state space equation of electric system region difference control process dynamics mathematical model
Make following form:
Y=Cx
Wherein, x represents state variable vector, and u represents input variable vector, and W represents disturbance quantity vector, and Y represents output quantity vector,
A represents the state matrix of the system, and B represents the input matrix of the system, and R represents perturbation matrix, and C represents output matrix;
State space equation is subjected to sliding-model control, obtains the discrete shape of electric system region difference control process mathematical model
Formula:
X (k+1)=Adx(k)+Bdu(k)+RdW(k)
The expression formula of each matrix is as follows in above formula:
Wherein, TsFor the sampling time of discrete system;
S303:Determine Controlling object function such as following formula:
Wherein, xG、uGRespectively conventional rack quantity of state and controlled quentity controlled variable, xW、uWRespectively Wind turbines quantity of state and controlled quentity controlled variable,
QG、QW、RG、RWRespectively conventional rack quantity of state, Wind turbines quantity of state, conventional rack controlled quentity controlled variable and Wind turbines controlled quentity controlled variable
Weight matrix, M be Model Predictive Control control time domain length;
S304:Determine that constraints is as follows:
X (k+i+1 | k)=Adx(k+i|k)+Bdu(k+i|k)+RdW(k+i|k),i≥0
It indicates, the linear prediction model of electric system region difference control process;
uGmin≤uG(k+i|k)≤uGmax, i=0 ..., M-1
uWmin≤uW(k+i|k)≤uWmax, i=0 ..., M-1
It indicates, conventional rack controlled quentity controlled variable is controlled by it the constraint in section with Wind turbines controlled quentity controlled variable;
xGmin≤xG(k+i|k)≤xGmax, i=1 ..., P
xWmin≤xW(k+i|k)≤xWmax, i=1 ..., P
It indicates, conventional rack quantity of state is constrained by its pondage with Wind turbines state;
ΔxGmin≤ΔxG(k+i|k)≤ΔxGmax, i=1 ..., P
ΔxWmin≤ΔxW(k+i|k)≤ΔxWmax, i=1 ..., P
It indicates, conventional rack quantity of state increment is constrained by its creep speed with Wind turbines quantity of state increment;
S305:It is solved according to active constraint set algorithm, calculates the conventional rack regulation power and the Wind turbines
Regulation power.
3. Wind turbines according to claim 2 participate in the control method for coordinating of electric system Automatic Generation Control, special
Sign is, further comprising the steps of after step S305:
S306:Feedback compensation and rolling optimization are carried out to the conventional rack regulation power and the Wind turbines regulation power;
S307:The conventional rack regulation power and the Wind turbines regulation power are handed down to the provincial dispatching center,
Regulation power is allocated by the provincial dispatching center, and is issued to each wind power plant.
4. Wind turbines according to claim 3 participate in the control method for coordinating of electric system Automatic Generation Control, special
Sign is that in step s 4, the provincial dispatching center is divided according to the pondage of each wind power plant by following formula in proportion
With regulation power Aw:
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