CN109167372A - The colony integrated control method for frequency of wind-powered electricity generation and system based on layered distribution type Model Predictive Control - Google Patents
The colony integrated control method for frequency of wind-powered electricity generation and system based on layered distribution type Model Predictive Control Download PDFInfo
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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
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
The invention discloses a kind of colony integrated control method for frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control, comprising: establishes the layered distribution type Model Predictive Control H-DMPC controller in the multiple space and time scales coordination colony integrated frequency control strategy of wind-powered electricity generation；Wind-powered electricity generation cluster is established to coordinate to become size frequency control framework in the multiple space and time scales of frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer three times；The rolling optimization model successively refined on space scale is established in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer respectively；Feedback compensation link is established in terms of wind power prediction error correction, by the feedback compensation of operation of power networks state feedback and prediction data, realizes the operation with closed ring of collective frequency control.The present invention establishes feedback compensation link according to system real-time running state, realizes the operation with closed ring of collective frequency control strategy, the control strategy of proposition can effectively realize that wind-powered electricity generation cluster participates in system frequency modulation, and can take into account the economy and security objectives of consideration system.
Description
Technical field
The energy is connected to the grid frequency stabilization control technology field the present invention relates to being, and more particularly, to a kind of base
In the colony integrated control method for frequency of the wind-powered electricity generation of layered distribution type Model Predictive Control and system.
Background technique
As fossil energy shortage and problem of environmental pollution become increasingly conspicuous, wind-powered electricity generation is as a kind of more mature clear of technology
Permeability of the clean generation mode in power grid is continuously improved, and completes energy substitution to the old traditional fired power generating unit in part.However,
Wind-powered electricity generation has fluctuation and probabilistic power output property, and the running technology of Wind turbines converters interface makes machine
Tool and electric part decouple, and make wind-powered electricity generation that can not pass through built-in inertia as traditional fired power generating unit and timely respond to mains frequency change
Change, mains frequency stability can be destroyed under high permeability wind-electricity integration scene.Currently, having built and having planned multiple thousand in China
Ten thousand multikilowatt wind power bases, and related Grid-connection standards have been formulated to the power fluctuation limit of integrated wind plant, therefore how in wind
The active power output of wind-powered electricity generation cluster is flexibly controlled within the scope of electricity prediction effective output, has it and is assisted with tradition AGC power supply
Ability with frequency modulation becomes urgent problem to be solved.
Currently, having been achieved for some progress in the research that wind-powered electricity generation real power control and wind-powered electricity generation participate in frequency modulation.With China's wind
The continuous improvement of electric installed capacity, the research for Wind turbines and single wind field have been unable to meet application request, it is necessary to
The research that wind-powered electricity generation real power control field and wind-powered electricity generation participate in frequency modulation field is organically combined, wind-powered electricity generation cluster collaboration tradition AGC electricity is established
Source carries out the control strategy of flexible frequency modulation.In recent years, Model Predictive Control (Model Predictive Control, MPC) is managed
By as a kind of prediction model based in prediction time domain, feedback compensation is carried out according to actual motion state, in control time domain
The control method of rolling optimization is just gradually being applied in wind-powered electricity generation real power control and frequency modulation research.
Summary of the invention
The present invention propose a kind of colony integrated control method for frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control and
System, to solve the problems, such as how to control the collective frequency of wind-powered electricity generation cluster.
To solve the above-mentioned problems, according to an aspect of the invention, there is provided it is a kind of pre- based on layered distribution type model
The colony integrated control method for frequency of the wind-powered electricity generation of observing and controlling, which is characterized in that the described method includes:
Establish the layered distribution type Model Predictive Control in the multiple space and time scales coordination colony integrated frequency control strategy of wind-powered electricity generation
H-DMPC controller；
Wind-powered electricity generation cluster is established to coordinate to become granularity in the multiple space and time scales of frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer three times
Frequency control framework；
The rolling successively refined on space scale is established in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer respectively
Optimized model；
Feedback compensation link is established in terms of wind power prediction error correction, is fed back and is predicted by operation of power networks state
The feedback compensation of data realizes the operation with closed ring of collective frequency control.
Preferably, wherein the layered distribution type Model Predictive Control H-DMPC controller include: three times frequency modulation control device,
Frequency modulation frequency modulation controller and primary frequency modulation controller,
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC
Power supply and wind-powered electricity generation cluster, starting time are every 15min, are optimized in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of traditional AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations；
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC
Power supply and wind power plant, starting time are every 1min, carry out subregion two on the basis of the economical operation basic point that frequency modulation three times determines
Secondary frequency modulation stabilizes 1min grades of load fluctuations by a relatively large margin；
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant,
The starting time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation energy
Power stabilizes small magnitude random load fluctuation in real time.
Preferably, wherein it is described establish wind-powered electricity generation cluster frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer it is more when
Empty scale coordination becomes size frequency control framework, comprising:
It is respectively provided with prediction model, rolling optimization and feedback compensation link in each control layer, according to power grid and wind-powered electricity generation cluster
Real-time running state, is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer three times, secondary
The feedback compensation of frequency modulation layer and primary frequency modulation layer forms closed loop frequency modulation frame structure.
Preferably, wherein described establish in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer in space scale respectively
On the rolling optimization model that successively refines, comprising:
Frequency modulation control device models three times for the whole district, considers system network topology, determines rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NG
For whole district's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGα(k) for the power generation of tradition AGC power supply α in period k at
This,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve
Parameter, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k,
MWβ(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβ(k) active for wind power plant β in period k
Power output adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,For the submitting of wind-powered electricity generation cluster
The transmission limit of interconnection γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；When Ploss (k) is
Section k whole district system losses；
The modeling of subregion frequency modulation frequency modulation controller, considers subregion ASFAM model, determines optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe mistake being respectively made of weight coefficient
Control diagonal matrix under difference power diagonal matrix and laguerre function；
Primary frequency modulation controller of classifying models, and the principle that 1min every to subregion wind power plant participates in primary frequency modulation process is arranged
Are as follows: when uncertain small magnitude random load increases, wind power plant inner blower discharges kinetic energy by drop revolving speed, quickly increases in short-term
Wind power is added to export；When uncertain small magnitude random load reduces, wind power plant inner blower is by rising revolving speed storage
Kinetic energy quickly reduces wind power output in short-term.
Preferably, wherein in terms of wind power prediction error correction, pass through the wind power plant past first using following formula
Actual error in preset time threshold is corrected prediction model:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is that 5min is missed in the past
Poor matrix.
According to another aspect of the present invention, a kind of wind-powered electricity generation cluster based on layered distribution type Model Predictive Control is provided
Collective frequency control system, which is characterized in that the system comprises:
Distributed model predictive control device establishes unit, coordinates the colony integrated frequency control of wind-powered electricity generation for establishing multiple space and time scales
Layered distribution type Model Predictive Control H-DMPC controller in system strategy；
Control framework establishes unit, for establishing wind-powered electricity generation cluster in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer
Multiple space and time scales coordinate become size frequency control framework；
Optimized model establishes unit, for establishing respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer in sky
Between the rolling optimization model that successively refines on scale；
It corrects unit and passes through operation of power networks for establishing feedback compensation link in terms of wind power prediction error correction
The feedback compensation of state feedback and prediction data, realizes the operation with closed ring of collective frequency control.
Preferably, wherein the distributed model predictive control device establishes the layered distribution type Model Predictive Control in unit
H-DMPC controller includes: frequency modulation control device, frequency modulation frequency modulation controller and primary frequency modulation controller three times,
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC
Power supply and wind-powered electricity generation cluster, starting time are every 15min, are optimized in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of traditional AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations；
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC
Power supply and wind power plant, starting time are every 1min, carry out subregion two on the basis of the economical operation basic point that frequency modulation three times determines
Secondary frequency modulation stabilizes 1min grades of load fluctuations by a relatively large margin；
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant,
The starting time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation energy
Power stabilizes small magnitude random load fluctuation in real time.
Preferably, wherein the control framework establishes unit, establish wind-powered electricity generation cluster frequency modulation layer three times, frequency modulation frequency modulation layer and
The multiple space and time scales of primary frequency modulation layer are coordinated to become size frequency control framework, comprising:
It is respectively provided with prediction model, rolling optimization and feedback compensation link in each control layer, according to power grid and wind-powered electricity generation cluster
Real-time running state, is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer three times, secondary
The feedback compensation of frequency modulation layer and primary frequency modulation layer forms closed loop frequency modulation frame structure.
Preferably, wherein the Optimized model establishes unit, respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation
Layer establishes the rolling optimization model successively refined on space scale, comprising:
Frequency modulation control device modeling module three times, for the whole district, frequency modulation control device is modeled three times, considers grid topology knot
Structure determines rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NG
For whole district's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGα(k) for the power generation of tradition AGC power supply α in period k at
This,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve
Parameter, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k,
MWβ(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβ(k) active for wind power plant β in period k
Power output adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,For the submitting of wind-powered electricity generation cluster
The transmission limit of interconnection γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；When Ploss (k) is
Section k whole district system losses；
Frequency modulation frequency modulation controller modeling module is modeled for subregion frequency modulation frequency modulation controller, considers subregion ASFAM model,
Determine optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe mistake being respectively made of weight coefficient
Control diagonal matrix under difference power diagonal matrix and laguerre function；
Primary frequency modulation controller modeling module is arranged every to subregion wind power plant for primary frequency modulation controller modeling of classifying
The principle of 1min participation primary frequency modulation process are as follows: when uncertain small magnitude random load increases, wind power plant inner blower is logical
Drop revolving speed release kinetic energy is crossed, quicklys increase wind power output in short-term；When uncertain small magnitude random load reduces,
Wind power plant inner blower quickly reduces wind power output by rising revolving speed store kinetic energy in short-term.
Preferably, wherein the correction unit passes through wind using following formula in terms of wind power prediction error correction
The actual error that electric field is gone in the first preset time threshold is corrected prediction model:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is that 5min is missed in the past
Poor matrix.
The present invention provides a kind of colony integrated control method for frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control
And system, establish wind-powered electricity generation cluster in the change size frequency control framework of frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer three times,
In prediction time domain, control time domain and the super short-period wind power predicted value that each layer is successively refined using time scale；In each layer
The rolling optimization model that space scale successively refines is established, wherein considering topological structure of electric and whole district's economy in frequency modulation layer three times
Property optimal objective, consider ASFAM and partition security optimal objective in frequency modulation frequency modulation layer, consider subregion wind-powered electricity generation in primary frequency modulation layer
Single game dynamic cataloging carrys out real-time stabilizing system load small value random perturbation in cluster；According to power grid and wind-powered electricity generation cluster real time execution
State establishes feedback compensation link, realizes the operation with closed ring of collective frequency control strategy.Control strategy energy proposed by the invention
It is enough effectively to realize that wind-powered electricity generation cluster participates in system frequency modulation, and the economy and security objectives of consideration system can be taken into account.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is the colony integrated frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control according to embodiment of the present invention
The flow chart of control method 100；
Fig. 2 is the collective frequency control framework figure according to embodiment of the present invention；
Fig. 3 is the IEEE39 bus test system figure containing 10 wind power plants provided according to embodiment of the present invention；
The position Fig. 4 emulation time domain inner region frequency shift (FS) curve that embodiment provides according to the present invention；
Fig. 5 is the colony integrated frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control according to embodiment of the present invention
The structural schematic diagram of control system 500.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the colony integrated frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control according to embodiment of the present invention
The flow chart of control method 100.As shown in Figure 1, embodiments of the present invention provide based on layered distribution type model prediction control
The colony integrated control method for frequency of the wind-powered electricity generation of system establishes wind-powered electricity generation cluster in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation
The change size frequency control framework of layer, the prediction time domain successively refined in each layer using time scale, control time domain and ultrashort
Phase wind power prediction value；The rolling optimization model that space scale successively refines is established in each layer, wherein examining in frequency modulation layer three times
Consider topological structure of electric and whole district's economy optimal objective, consider ASFAM and partition security optimal objective in frequency modulation frequency modulation layer,
Consider that single game dynamic cataloging carrys out real-time stabilizing system load small value random perturbation in subregion wind-powered electricity generation cluster in primary frequency modulation layer；Root
Feedback compensation link is established according to power grid and wind-powered electricity generation cluster real-time running state, realizes the operation with closed ring of collective frequency control strategy.
Control strategy proposed by the invention can effectively realize that wind-powered electricity generation cluster participates in system frequency modulation, and can take into account the economy of consideration system
Property and security objectives.
The colony integrated frequency control of the wind-powered electricity generation based on layered distribution type Model Predictive Control that embodiments of the present invention provide
Method 100 processed establishes multiple space and time scales in step 101 and coordinates the colony integrated frequency control strategy of wind-powered electricity generation since step 101 place
In layered distribution type Model Predictive Control H-DMPC controller.
Preferably, wherein the layered distribution type Model Predictive Control H-DMPC controller include: three times frequency modulation control device,
Frequency modulation frequency modulation controller and primary frequency modulation controller.
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC
Power supply and wind-powered electricity generation cluster, starting time are every 15min, are optimized in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of traditional AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations.
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC
Power supply and wind power plant, starting time are every 1min, carry out subregion two on the basis of the economical operation basic point that frequency modulation three times determines
Secondary frequency modulation stabilizes 1min grades of load fluctuations by a relatively large margin.
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant,
The starting time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation energy
Power stabilizes small magnitude random load fluctuation in real time.
In embodiments of the present invention, H-DMPC controller is that multiple space and time scales coordinate the colony integrated frequency control of wind-powered electricity generation
The core of strategy, is made of frequency modulation control device three times, frequency modulation frequency modulation controller and primary frequency modulation controller three parts.Each section
Act on as follows: 1) frequency modulation control device three times: making wind-powered electricity generation participate in the controller of frequency modulation three times, and sphere of action is whole district's tradition AGC electric
Source and wind-powered electricity generation cluster, starting time are every 15min, optimize in 15min in the case where AGC operation is spare and wind power prediction constrains and pass
The economical operation value and power reference of system AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations, improves system fortune
Row economy；2) frequency modulation frequency modulation controller: making wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, and sphere of action is subregion tradition AGC electricity
Source and wind power plant, starting time are every 1min, and it is secondary to carry out subregion on the basis of the economical operation basic point that frequency modulation three times determines
Frequency modulation stabilizes 1min grades of load fluctuations by a relatively large margin, improves security of system and static frequency stability, fast quick-recovery frequency
Offset reduces frequency static deviation；3) primary frequency modulation controller: making wind-powered electricity generation participate in the controller of primary frequency modulation, and sphere of action is
Classify wind power plant, the starting time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field with short
The ability of temporary frequency modulation, stabilizes small magnitude random load fluctuation in real time, improves security of system and transient frequency stability, prevents frequency
Rate mutation, so that frequency modulation frequency modulation controller be made to have enough time to adjust generated output reconstructing system power-balance.
Preferably, step 102 establish wind-powered electricity generation cluster frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer it is more when
Empty scale coordination becomes size frequency control framework.
Preferably, wherein it is described establish wind-powered electricity generation cluster frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer it is more when
Empty scale coordination becomes size frequency control framework, comprising:
It is respectively provided with prediction model, rolling optimization and feedback compensation link in each control layer, according to power grid and wind-powered electricity generation cluster
Real-time running state, is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer three times, secondary
The feedback compensation of frequency modulation layer and primary frequency modulation layer forms closed loop frequency modulation frame structure.
Fig. 2 is the collective frequency control framework figure according to embodiment of the present invention.As shown in Fig. 2, in implementation of the invention
In mode, the collective frequency control framework of foundation is broadly divided into three layers of MPC control architecture, respectively frequency modulation layer, secondary tune three times
Frequency layer and primary frequency modulation layer, and include prediction model, rolling optimization and feedback compensation link in each control layer.Wherein,
The whole district is established on the basis of considering topological structure of electric according to the wind-powered electricity generation prediction data of 15min resolution ratio in frequency modulation layer three times
Economy optimal objective is prediction time domain with 2h, and 1h is control time domain, and every 15min passes through frequency modulation control device rolling optimization three times
The economical operation basic point of whole district's wind-powered electricity generation cluster and tradition AGC power supply simultaneously issues, and what frequency modulation layer was mainly coped with three times is 15min grades
Whole district's load fluctuation；In frequency modulation frequency modulation layer, according to the wind-powered electricity generation prediction data of 1min resolution ratio, in subregion average system frequency augmentation
Partition security optimal objective is established on model (Average System Frequency Augmented Model, ASFAM),
Be prediction time domain with 1h, 15min is control time domain, every 1min by each wind power plant of frequency modulation frequency modulation controller rolling optimization subregion and
Dynamic security of traditional AGC power supply on the basis of the economical operation basic point that the every 15min of frequency modulation three times is issued runs basic point adjustment amount,
What frequency modulation frequency modulation layer was mainly coped with is 1min grades of partition load fluctuation；Wind-powered electricity generation in primary frequency modulation layer, according to 1min resolution ratio
Prediction data and wind power plant real-time running state, every 1min carry out dynamic cataloging and priority ordered to each wind power plant of subregion, lead to
Cross the primary frequency modulation function that primary frequency modulation controller cooperates with traditional AGC power supply to the mode of classification wind power plant inner blower lifting/lowering revolving speed
Uncertain load small value random fluctuation can be stabilized in real time.The present invention according to power grid and wind-powered electricity generation cluster real-time running state,
It is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer three times, frequency modulation frequency modulation layer and primary tune
The feedback compensation of frequency layer forms closed loop frequency modulation frame structure.
Preferably, it is established respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer in space scale in step 103
On the rolling optimization model that successively refines.
Preferably, wherein described establish in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer in space scale respectively
On the rolling optimization model that successively refines, comprising:
Frequency modulation control device models three times for the whole district, considers system network topology, determines rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NG
For whole district's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGα(k) for the power generation of tradition AGC power supply α in period k at
This,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve
Parameter, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k,
MWβ(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβ(k) active for wind power plant β in period k
Power output adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,For the submitting of wind-powered electricity generation cluster
The transmission limit of interconnection γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；When Ploss (k) is
Section k whole district system losses；
The modeling of subregion frequency modulation frequency modulation controller, considers subregion ASFAM model, determines optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe mistake being respectively made of weight coefficient
Control diagonal matrix under difference power diagonal matrix and laguerre function；
Primary frequency modulation controller of classifying models, and the principle that 1min every to subregion wind power plant participates in primary frequency modulation process is arranged
Are as follows: when uncertain small magnitude random load increases, wind power plant inner blower discharges kinetic energy by drop revolving speed, quickly increases in short-term
Wind power is added to export；When uncertain small magnitude random load reduces, wind power plant inner blower is by rising revolving speed storage
Kinetic energy quickly reduces wind power output in short-term.
In embodiments of the present invention, when frequency modulation control device models three times for the whole district, frequency modulation control device is considered three times
System network topology, every 15min determine the economical operation function of whole district's tradition AGC power supply and wind-powered electricity generation cluster in future 15min
Rate basic point, rolling calculation time step are 15min, and rolling optimization objective function is as follows:
In formula: T is optimization time domain, is 1h in the control time domain of frequency modulation layer three times, i.e., the control that every suboptimization calculates future 1h is made
With, and this layer of rolling calculation time step Δ t is 15min, therefore T=4, with the variation of k value, the time is rolled forward with Time step Δ t
The optimum results of k=1 are only applied to system after every suboptimization by dynamic passage；λ1、λ2、λ3For the control of objective function items
Weight, and λ1+λ2+λ3=1；The first item of objective function is that cost of electricity-generating is minimum, NGFor whole district's tradition AGC number of power sources, NWFor whole district's wind
Electric field quantity, MGαIt (k) is the cost of electricity-generating of tradition AGC power supply α in period k,
Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve parameter, Δ PGαIt (k) is AGC power supply α active power output in period k
Adjustment amount, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k, MWβ(k)=KwΔPWβ(k), wherein Kw is that wind power plant unit goes out
Power adjustment cost, Δ PWβIt (k) is wind power plant β active power output adjustment amount in period k；The Section 2 of objective function is to use wind as far as possible
Electric cluster sends out interconnection capacity, and z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,For wind
Electric cluster sends out the transmission limit of interconnection γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；Mesh
The Section 3 of scalar functions is that system losses are minimum, and Ploss (k) is period k whole district system losses；The Section 2 of objective function and
Three consider system power network topology, are related to network Load flow calculation.
In the modeling of subregion frequency modulation frequency modulation controller, frequency modulation frequency modulation controller considers subregion ASFAM model, is adjusting three times
On the basis of the economical operation basic point that the every 15min of frequency controller is issued, every 1min determines subregion tradition AGC power supply and wind power plant dynamic
It is safely operated basic point adjustment amount, rolling calculation time step is 1min.With the distributed model predictive control for combining laguerre function
Method, rolling optimization objective function are to predict that output variable tends in 0 and control time domain NC control in time domain NP from k time step
Variable weighting inhibits:
In formula: Yi is output sequence, ηiFor laguerre function control sequence, Qi and RLi are respectively to be made of weight coefficient
Error weighs control diagonal matrix under diagonal matrix and laguerre function.
When classifying the modeling of primary frequency modulation controller, 1min every to subregion wind power plant participates in the principle system of primary frequency modulation process
Be set to: in the increase of uncertain small magnitude random load, wind power plant inner blower discharges kinetic energy by drop revolving speed, in short-term quickly
Increase wind power output, maximum increasesMaximum increases toIt is dropped in uncertain small magnitude random load
When low, wind power plant inner blower quickly reduces wind power output by rising revolving speed store kinetic energy in short-term, and maximum is reduced
Maximum is reduced extremelyIt is real-time according to subregion wind power plant in order to improve the ability and control precision that wind power plant participates in primary frequency modulation
Load condition and 1min resolution ratio wind-powered electricity generation prediction power, every 1min carry out dynamic cataloging to subregion wind power plant and form priority row
Sequence makes grouping sheet wind field successively participate in primary frequency modulation by priority ordered according to power distribution strategies, to improve primary frequency modulation
The accuracy and specific aim of layer rolling optimization.
Preferably, feedback compensation link is established in terms of wind power prediction error correction in step 104, transported by power grid
The feedback compensation of row state feedback and prediction data, realizes the operation with closed ring of collective frequency control.
Preferably, wherein in terms of wind power prediction error correction, pass through the wind power plant past first using following formula
Actual error in preset time threshold is corrected prediction model:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is that 5min is missed in the past
Poor matrix.
In terms of system running state feedback, need every 1min by actual measurement system state to frequency modulation frequency modulation layer and primary frequency modulation
Layer is fed back.It is counted after current Time step k is applied with current optimum control amount to system currently in frequency modulation frequency modulation layer
Time step end is calculated, frequency modulation frequency modulation controller is obtained by the feedback of condition detecting device according to actual measurement system actual motion state
The system separate manufacturing firms equation of next Time step k+1 carries out a subregion state feedback compensation every 1min, under
Corresponding rolling optimization calculating is carried out based on the system separate manufacturing firms equation after feedback compensation in one Time step k+1, obtains k
The optimum control amount of+1 time step is carried out with this circulating rolling until entire emulation time domain is traversed, to reduce because wind power is pre-
It surveys error and system control error is formulated bring to control strategy and influenced, improve system and control robustness；In primary frequency modulation layer,
Wind-powered electricity generation operation data is fed back to update to primary frequency modulation controller by the every 1min of system mode feedback element, it is ensured that subregion wind-powered electricity generation
The correctness of field dynamic cataloging sequence, improves system and controls accuracy.
Fig. 3 is the IEEE39 bus test system figure containing 10 wind power plants provided according to embodiment of the present invention.Such as Fig. 3
Shown, 39 bus test system of IEEE including 8 conventional power sources, 10 wind power plants and 19 loads is to mentioned control strategy
Carry out simulating, verifying.Each area's frequency shift (FS) curve is obtained with the above method, as shown in Figure 4.From fig. 4, it can be seen that H-DMPC
Control strategy, can be according to region in terms of frequency control in the case where minute grade wind-powered electricity generation cluster power swing and load disturbance
Interior ultra-short term wind-powered electricity generation prediction power rationally controls each wind power plant output, coordinates subregion wind-powered electricity generation cluster and subregion tradition AGC power supply
Cooperation is common to participate in frequency modulation, by each area's frequency shift (FS) control in [- 0.08,0.08] section, meets GB/T 15945-2008
China's power system frequency offset permissible value is the regulation of ± 0.2Hz in " power quality power system frequency tolerance ".
Fig. 5 is the colony integrated frequency of the wind-powered electricity generation based on layered distribution type Model Predictive Control according to embodiment of the present invention
The structural schematic diagram of control system 500.As shown in figure 5, embodiments of the present invention offer is pre- based on layered distribution type model
The colony integrated frequency control system 500 of the wind-powered electricity generation of observing and controlling, comprising: distributed model predictive control device establishes unit 501, control
Frame establishes unit 502, Optimized model establishes unit 503 and correction unit 504.
Preferably, the distributed model predictive control device establishes unit 501, coordinates wind-powered electricity generation for establishing multiple space and time scales
Layered distribution type Model Predictive Control H-DMPC controller in colony integrated frequency control strategy.
Preferably, wherein the distributed model predictive control device establishes the layered distribution type Model Predictive Control in unit
H-DMPC controller includes: frequency modulation control device, frequency modulation frequency modulation controller and primary frequency modulation controller three times.
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC
Power supply and wind-powered electricity generation cluster, starting time are every 15min, are optimized in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of traditional AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations.
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC
Power supply and wind power plant, starting time are every 1min, carry out subregion two on the basis of the economical operation basic point that frequency modulation three times determines
Secondary frequency modulation stabilizes 1min grades of load fluctuations by a relatively large margin.
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant,
The starting time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation energy
Power stabilizes small magnitude random load fluctuation in real time.
Preferably, the control framework establishes unit 502, for establishing wind-powered electricity generation cluster in frequency modulation layer, frequency modulation frequency modulation three times
The multiple space and time scales of layer and primary frequency modulation layer are coordinated to become size frequency control framework.
Preferably, wherein the control framework establishes unit, establish wind-powered electricity generation cluster frequency modulation layer three times, frequency modulation frequency modulation layer and
The multiple space and time scales of primary frequency modulation layer are coordinated to become size frequency control framework, comprising: each control layer be respectively provided with prediction model,
Rolling optimization and feedback compensation link, according to power grid and wind-powered electricity generation cluster real-time running state, fed back by operation of power networks state and
Prediction data correction link establishes the feedback compensation to frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer three times respectively, and formation is closed
Ring frequency modulation frame structure.
Preferably, the Optimized model establishes unit 503, for respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary
Frequency modulation layer establishes the rolling optimization model successively refined on space scale.
Preferably, wherein the Optimized model establishes unit, respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation
Layer establishes the rolling optimization model successively refined on space scale, comprising:
Frequency modulation control device modeling module three times, for the whole district, frequency modulation control device is modeled three times, considers grid topology knot
Structure determines rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NG
For whole district's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGα(k) for the power generation of tradition AGC power supply α in period k at
This,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve
Parameter, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k,
MWβ(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβ(k) active for wind power plant β in period k
Power output adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,For the submitting of wind-powered electricity generation cluster
The transmission limit of interconnection γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；When Ploss (k) is
Section k whole district system losses；
Frequency modulation frequency modulation controller modeling module is modeled for subregion frequency modulation frequency modulation controller, considers subregion ASFAM model,
Determine optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe mistake being respectively made of weight coefficient
Control diagonal matrix under difference power diagonal matrix and laguerre function；
Primary frequency modulation controller modeling module is arranged every to subregion wind power plant for primary frequency modulation controller modeling of classifying
The principle of 1min participation primary frequency modulation process are as follows: when uncertain small magnitude random load increases, wind power plant inner blower is logical
Drop revolving speed release kinetic energy is crossed, quicklys increase wind power output in short-term；When uncertain small magnitude random load reduces,
Wind power plant inner blower quickly reduces wind power output by rising revolving speed store kinetic energy in short-term.
Preferably, the correction unit 504, for establishing feedback compensation ring in terms of wind power prediction error correction
Section realizes the operation with closed ring of collective frequency control by the feedback compensation of operation of power networks state feedback and prediction data.
Preferably, wherein the correction unit passes through wind using following formula in terms of wind power prediction error correction
The actual error that electric field is gone in the first preset time threshold is corrected prediction model:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is that 5min is missed in the past
Poor matrix.
The colony integrated frequency control system of wind-powered electricity generation based on layered distribution type Model Predictive Control of the embodiment of the present invention
500 with the colony integrated frequency controlling party of the wind-powered electricity generation based on layered distribution type Model Predictive Control of another embodiment of the invention
Method 100 is corresponding, and details are not described herein.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (10)
1. a kind of colony integrated control method for frequency of wind-powered electricity generation based on layered distribution type Model Predictive Control, which is characterized in that institute
The method of stating includes:
Establish the layered distribution type Model Predictive Control H- in the multiple space and time scales coordination colony integrated frequency control strategy of wind-powered electricity generation
DMPC controller；
Wind-powered electricity generation cluster is established to coordinate to become size frequency in the multiple space and time scales of frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer three times
Control framework；
The rolling optimization successively refined on space scale is established in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer respectively
Model；
Feedback compensation link is established in terms of wind power prediction error correction, is fed back by operation of power networks state and prediction data
Feedback compensation, realize collective frequency control operation with closed ring.
2. the method according to claim 1, wherein the layered distribution type Model Predictive Control H-DMPC is controlled
Device includes: frequency modulation control device, frequency modulation frequency modulation controller and primary frequency modulation controller three times,
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC power supply
With wind-powered electricity generation cluster, the starting time is every 15min, optimizes tradition in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations；
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC power supply
And wind power plant, starting time are every 1min, carry out the secondary tune of subregion on the basis of the economical operation basic point that frequency modulation three times determines
Frequency stabilizes 1min grades of load fluctuations by a relatively large margin；
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant, starting
Time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation ability, it is real
When stabilize small magnitude random load fluctuation.
3. the method according to claim 1, wherein the wind-powered electricity generation cluster of establishing is in frequency modulation layer three times, secondary tune
The multiple space and time scales of frequency layer and primary frequency modulation layer are coordinated to become size frequency control framework, comprising:
It is respectively provided with prediction model, rolling optimization and feedback compensation link in each control layer, it is real-time according to power grid and wind-powered electricity generation cluster
Operating status, is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer, frequency modulation frequency modulation three times
The feedback compensation of layer and primary frequency modulation layer forms closed loop frequency modulation frame structure.
4. the method according to claim 1, wherein described respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and one
Secondary frequency modulation layer establishes the rolling optimization model successively refined on space scale, comprising:
Frequency modulation control device models three times for the whole district, considers system network topology, determines rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NGIt is complete
Area's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGαIt (k) is the cost of electricity-generating of tradition AGC power supply α in period k,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve ginseng
Number, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k, MWβ
(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβIt (k) is wind power plant β active power output in period k
Adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,It sends out and gets in touch with for wind-powered electricity generation cluster
The transmission limit of line γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；Ploss (k) is period k
Whole district's system losses；
The modeling of subregion frequency modulation frequency modulation controller, considers subregion ASFAM model, determines optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe error power being respectively made of weight coefficient
Control diagonal matrix under diagonal matrix and laguerre function；
Primary frequency modulation controller of classifying models, and the principle that 1min every to subregion wind power plant participates in primary frequency modulation process is arranged are as follows:
When uncertain small magnitude random load increases, wind power plant inner blower discharges kinetic energy by drop revolving speed, quicklys increase wind in short-term
Electric field power output；When uncertain small magnitude random load reduces, wind power plant inner blower, which passes through, rises revolving speed store kinetic energy,
Wind power output is quickly reduced in short-term.
5. the method according to claim 1, wherein in terms of wind power prediction error correction, using as follows
Formula is gone over the actual error in the first preset time threshold by wind power plant and is corrected to prediction model:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is past 5min error moments
Battle array.
6. a kind of colony integrated frequency control system of wind-powered electricity generation based on layered distribution type Model Predictive Control, which is characterized in that institute
The system of stating includes:
Distributed model predictive control device establishes unit, coordinates the colony integrated frequency control plan of wind-powered electricity generation for establishing multiple space and time scales
Layered distribution type Model Predictive Control H-DMPC controller in slightly；
Control framework establishes unit, for establishing wind-powered electricity generation cluster in the more of frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer
Spatial and temporal scales are coordinated to become size frequency control framework；
Optimized model establishes unit, for establishing respectively in frequency modulation layer three times, frequency modulation frequency modulation layer and primary frequency modulation layer in space ruler
The rolling optimization model successively refined on degree；
It corrects unit and passes through operation of power networks state for establishing feedback compensation link in terms of wind power prediction error correction
The feedback compensation of feedback and prediction data realizes the operation with closed ring of collective frequency control.
7. system according to claim 6, which is characterized in that the distributed model predictive control device is established in unit
Layered distribution type Model Predictive Control H-DMPC controller includes: frequency modulation control device, frequency modulation frequency modulation controller and primary to adjust three times
Frequency controller,
The device of frequency modulation control three times is the controller for making wind-powered electricity generation participate in frequency modulation three times, and sphere of action is whole district's tradition AGC power supply
With wind-powered electricity generation cluster, the starting time is every 15min, optimizes tradition in 15min in the case where AGC operation is spare and wind power prediction constrains
The economical operation value and power reference of AGC power supply and wind-powered electricity generation cluster stabilizes 15min grades of significantly load fluctuations；
The frequency modulation frequency modulation controller, to make wind-powered electricity generation participate in the controller of frequency modulation frequency modulation, sphere of action is subregion tradition AGC power supply
And wind power plant, starting time are every 1min, carry out the secondary tune of subregion on the basis of the economical operation basic point that frequency modulation three times determines
Frequency stabilizes 1min grades of load fluctuations by a relatively large margin；
The primary frequency modulation controller, to make wind-powered electricity generation participate in the controller of primary frequency modulation, sphere of action is classification wind power plant, starting
Time is every 1min, dropped virtual sagging control by blower/liter revolving speed in a manner of make wind field that there is of short duration frequency modulation ability, it is real
When stabilize small magnitude random load fluctuation.
8. system according to claim 6, which is characterized in that the control framework establishes unit, establishes wind-powered electricity generation cluster and exists
The multiple space and time scales of frequency modulation layer, frequency modulation frequency modulation layer and primary frequency modulation layer are coordinated to become size frequency control framework three times, comprising:
It is respectively provided with prediction model, rolling optimization and feedback compensation link in each control layer, it is real-time according to power grid and wind-powered electricity generation cluster
Operating status, is fed back by operation of power networks state and prediction data correction link is established respectively to frequency modulation layer, frequency modulation frequency modulation three times
The feedback compensation of layer and primary frequency modulation layer forms closed loop frequency modulation frame structure.
9. system according to claim 6, which is characterized in that the Optimized model establishes unit, respectively in frequency modulation three times
Layer, frequency modulation frequency modulation layer and primary frequency modulation layer establish the rolling optimization model successively refined on space scale, comprising:
Frequency modulation control device modeling module three times, for the whole district, frequency modulation control device is modeled three times, considers system network topology, really
Determine rolling optimization objective function are as follows:
Wherein, T is optimization time domain, T=4, λ1、λ2、λ3For the control weight of objective function items, and λ1+λ2+λ3=1；NGIt is complete
Area's tradition AGC number of power sources, NWFor whole district's wind-powered electricity generation number, MGαIt (k) is the cost of electricity-generating of tradition AGC power supply α in period k,Wherein KfFor fuel price, atα、btα、ctαFor consumption characteristic curve ginseng
Number, Δ PGαIt (k) is AGC power supply α active power output adjustment amount in period k, MWβIt (k) is the cost of electricity-generating of wind power plant β in period k, MWβ
(k)=KwΔPWβ(k), wherein Kw is wind power plant specific power adjustment cost, Δ PWβIt (k) is wind power plant β active power output in period k
Adjustment amount；Z is the interconnection number from wind-powered electricity generation cluster close quarters to load intensive region,It sends out and gets in touch with for wind-powered electricity generation cluster
The transmission limit of line γ, Ptie,γ(k) transmission capacity of interconnection γ is sent out for period k wind-powered electricity generation cluster；Ploss (k) is period k
Whole district's system losses；
Frequency modulation frequency modulation controller modeling module is modeled for subregion frequency modulation frequency modulation controller, considers subregion ASFAM model, is determined
Optimization object function are as follows:
Wherein, YiFor output sequence, ηiFor laguerre function control sequence, QiAnd RLiThe error power being respectively made of weight coefficient
Control diagonal matrix under diagonal matrix and laguerre function；
1min every to subregion wind power plant is arranged for primary frequency modulation controller modeling of classifying in primary frequency modulation controller modeling module
Participate in the principle of primary frequency modulation process are as follows: when uncertain small magnitude random load increases, wind power plant inner blower passes through drop
Revolving speed discharges kinetic energy, quicklys increase wind power output in short-term；When uncertain small magnitude random load reduces, wind-powered electricity generation
Field inner blower quickly reduces wind power in short-term and exports by rising revolving speed store kinetic energy.
10. system according to claim 6, which is characterized in that the correction unit, in wind power prediction error correction
Aspect goes over the actual error in the first preset time threshold by wind power plant using following formula and carries out school to prediction model
Just:
Wherein,The respectively prediction model of correction front and back；H is error correction matrix；E is past 5min error moments
Battle array.
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