CN105986961A - Power optimal control method for variable-speed and variable-pitch wind turbine - Google Patents

Power optimal control method for variable-speed and variable-pitch wind turbine Download PDF

Info

Publication number
CN105986961A
CN105986961A CN201610274408.7A CN201610274408A CN105986961A CN 105986961 A CN105986961 A CN 105986961A CN 201610274408 A CN201610274408 A CN 201610274408A CN 105986961 A CN105986961 A CN 105986961A
Authority
CN
China
Prior art keywords
speed
wind
control
energy conversion
wind speed
Prior art date
Application number
CN201610274408.7A
Other languages
Chinese (zh)
Other versions
CN105986961B (en
Inventor
张文广
李腾飞
韩越
刘吉臻
曾德良
牛玉广
杨婷婷
胡阳
Original Assignee
华北电力大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华北电力大学 filed Critical 华北电力大学
Priority to CN201610274408.7A priority Critical patent/CN105986961B/en
Publication of CN105986961A publication Critical patent/CN105986961A/en
Application granted granted Critical
Publication of CN105986961B publication Critical patent/CN105986961B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • F03D7/0224Adjusting blade pitch
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0272Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor by measures acting on the electrical generator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0276Controlling rotor speed, e.g. variable speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/028Controlling motor output power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04Automatic control; Regulation
    • F03D7/042Automatic control; Regulation by means of an electrical or electronic controller
    • F03D7/043Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
    • F03D7/044Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with PID control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04Automatic control; Regulation
    • F03D7/042Automatic control; Regulation by means of an electrical or electronic controller
    • F03D7/043Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
    • F03D7/046Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with learning or adaptive control, e.g. self-tuning, fuzzy logic or neural network
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/10Purpose of the control system
    • F05B2270/1016Purpose of the control system in variable speed operation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/10Purpose of the control system
    • F05B2270/103Purpose of the control system to affect the output of the engine
    • F05B2270/1033Power (if explicitly mentioned)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/30Control parameters, e.g. input parameters
    • F05B2270/32Wind speeds
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/70Type of control algorithm
    • F05B2270/706Type of control algorithm proportional-integral-differential
    • Y02E10/723

Abstract

The invention relates to a power optimal control method for a variable-speed and variable-pitch wind turbine. The variable-speed and variable-pitch wind turbine is controlled within the whole designed wind speed range. When the wind turbine operates between the cut-in wind speed and rated wind speed, a variable-speed control mode is adopted, and at the time, by adjusting the electromagnetic torque of a generator, the wind turbine is made to operate under the optimal efficiency CP max. When the wind turbine operates above the rated wind speed, a variable-pitch controller begins to be used, and by adjusting the pitch angle, the maximum power output is limited at a rated value. At the time, a torque controller is a variable-gain controller, and different gains are set according to the rotation speed values corresponding to different wind conditions. The phenomenon that the wind turbine generates high power output within a short time when affected by gust and the like is greatly relieved. In addition, a switch rule is set for the variable-pitch controller near the rated wind, so that frequent switching of the variable-pitch controller near the rated wind is avoided. By means of the power optimal control method for the variable-speed and variable-pitch wind turbine, the service life of a gearbox is prolonged, and it is guaranteed that the wind turbine operates in a bad environment.

Description

A kind of speed-changing oar-changing wind energy conversion system power optimization control method

Technical field

The invention belongs to technical field of wind power generation, particularly to a kind of speed-changing oar-changing wind energy conversion system power optimization control method.

Background technology

The most for over ten years due to the realistic problem such as energy crisis, environmental pollution, people gradually carry out exploitation and the utilization of regenerative resource.Wind energy, as the clean energy resource being widely present on a kind of earth, utilizes the wind-powered electricity generation industry of wind power generation to obtain rapid development in recent years.Along with the increase of wind-power electricity generation installed capacity, unit performance and power generating quality receive much concern, and the control system and method to Wind turbine is had higher requirement.

The control method that the control method of current large-scale variable-pitch variable-speed wind energy conversion system mainly uses direct torque and pitch control to combine, when less than rated wind speed, wind energy conversion system mainly uses direct torque, according to blast velocity control wind speed round, make wind energy conversion system substantially run under optimum tip speed ratio, increase Wind energy extraction as far as possible;When wind speed exceedes rated wind speed, pitch control device comes into operation and keeps wind speed round constant, increases blade pitch angle, makes output substantially change near rated power, and the impact to wind energy conversion system is flowed in reduction.

But under the influence of extreme fitful wind, Wind turbine can produce the biggest power output in a short period of time, if using existing control system, owing to pitch-controlled system has bigger lag characteristic, the speed becoming oar does not catches up with the change of wind speed, system can be made to produce the biggest overshoot concussion, and then wind wheel hypervelocity phenomenon can be caused, wind energy conversion system also can be made to produce great load in a short period of time.Additionally, when wind speed is in and is continually changing near rated wind speed, wind energy conversion system will switch frequently in the input of pitch control device and between cutting out, and so will have a strong impact on the service life of wind energy conversion system associated components.

Summary of the invention

Not enough for prior art, the invention provides a kind of speed-changing oar-changing wind energy conversion system power optimization control method.

A kind of speed-changing oar-changing wind energy conversion system power optimization control method, specifically comprises the following steps that

Step 1: after Wind turbine comes into operation, initializes control system, starts wind speed size before testing machine;

Step 2: during the not up to incision wind speed of the wind speed when wind energy conversion system runs, generator torque is 0, wind energy conversion system not output;

Step 3: the wind speed when wind energy conversion system runs is when cutting change between wind speed and rated wind speed, and torque controller puts into operation, becomes vane angle θ and keeps constant, and torque controller should make maximum power output P in power output P trackingmax, wind energy conversion system is cutting maximum power output P when changing between wind speed and rated wind speedmaxFor:

P m a x = 1 2 C P m a x ( θ , λ ) ρπr 2 v 3 = M g ω g - - - ( 1 )

PmaxRepresent the maximum power output of wind energy conversion system, W;ρ is atmospheric density, kg/m3;R is wind wheel radius, m;V is wind speed, m/s;θ is for becoming propeller angle, rad;MgFor generator torque, kN m;ωgFor generator speed, rad/s;ωg=n ωt, ωtFor wind wheel angular velocity, rad/s;For power coefficient;λ is tip speed ratio,

Wind energy conversion system, when wind speed is for change between incision wind speed and rated wind speed, maintains generator torque M during peak powergFor:

M g = K o p t ω g 2 - - - ( 2 )

Wherein, KoptIt is a constant value, the type of wind energy conversion system determines:

Step 4: the wind speed when wind energy conversion system runs is when more than rated wind speed less than cut-out wind speed, and torque controller comes into operation with pitch control device simultaneously, modifying factor ξ corresponding for corresponding generator torque:

ξ = ( 1 + 0.9 · ω r ω max - ω r ) - 0.9 ω m a x - ω r · ω ;

Wherein, ω is electromotor actual speed, ωrFor the rated speed of electromotor, ωmaxMaximum (top) speed for electromotor;

Generator torque M nowgFor:

M g = ξK o p t ω g 2 - - - ( 3 )

Maximum power output expression formula is:

P m a x = M g · ω g = ξK o p t ω g 3 - - - ( 4 )

Step 5: when the wind speed when wind energy conversion system runs is more than cut-out wind speed, wind energy conversion system braking mechanism starts action, and wind energy conversion system is out of service, and Wind turbines cuts out electrical network;

Wherein torque controller is Gain-scheduling control device, and pitch control device is PID controller.

Wind speed when wind energy conversion system runs is when more than rated wind speed less than cut-out wind speed, and pitch control device is the PID controller of auto-adaptive parameter, and its control method is as follows:

Step 1: initialize PID controller parameter Kp(θ (k)), Ki(θ(k));

Step 2: according to upper moment propeller pitch angle change value, calculates the parameter value of current PID controller:

Kp(θ (k))=kp/(G+Δθ(k-1)) (5)

Ki(θ (k))=ki/(G+Δθ(k-1)) (6)

In formula, kp, kiIt is respectively PID controller proportional and the integral term value when systematic steady state, Kp(θ (k)), Ki(θ (k)) is the PID controller adaptation value when system dynamics, and Δ θ (k-1) is the change value of a upper moment propeller pitch angle, and G is constant, generally takes between 7-8;

Step 3: the propeller pitch angle change value of calculating current time pitch control device:

Δ θ=Kp(θ(k))(ωg(k-1)-ωg(k))+Ki(θ(k))·(ωg(k-1)-ωrate) (7)

In formula, Δ θ is the propeller pitch angle change value of current time pitch control device;Kp(θ (k)) and Ki(θ (k)) is respectively the PID controller adaptation value when system dynamics;ωg(k-1) it is a upper moment generator speed value;ωgK () is current time generator speed value;ωrateFor electromotor rated speed;

Step 4: the output propeller pitch angle of calculating pitch control device:

θ (k)=θ (k-1)+Δ θ (8)

In formula, θ (k) is current time pitch control device output valve;θ (k-1) is a upper moment pitch control device output valve;Δ θ is the propeller pitch angle change value of current time pitch control device.

In order to prevent pitch control device from frequently switching near rated wind speed, it is arranged switching law is: when moment propeller pitch angle changing value Δ θ (k-1) is less than-0.1 ° on pitch control device, make propeller pitch angle change value Δ θ=-0.1 ° of current time pitch control device;When moment propeller pitch angle changing value Δ θ (k-1) is more than 0.1 ° on pitch control device, make propeller pitch angle change value Δ θ=0.1 ° of current time pitch control device.

The invention have the benefit that, relative to traditional power optimization tracking, the present invention when wind speed is less than rated wind speed, uses speed Control mode, now by adjusting electromotor electromagnetic torque, makes wind energy conversion system in optimum efficiency CPmaxLower operation;When wind speed is higher than rated wind speed, pitch control device comes into operation, and makes maximum power output be limited in rated value by regulation propeller pitch angle;By introducing modifying factor ξ, greatly reduce owing to the impact of fitful wind etc. makes wind energy conversion system produce the phenomenon of the most high-power output at short notice, secondly near specified wind, pitch control device is arranged switching law, avoid the frequent switching near specified wind of the pitch control device, extend the service life of wind energy conversion system blade pitch device.By the improvement of control method of the present invention, optimize the control system of speed-changing oar-changing wind energy conversion system, substantially reduce the torque ripple of gear-box, improve wind-powered electricity generation quality, extend the life-span of gear-box, it is ensured that wind energy conversion system ruuning situation in the presence of a harsh environment, reduce the use cost of Wind turbine.

Accompanying drawing explanation

Fig. 1 is the control flow chart of a kind of speed-changing oar-changing wind energy conversion system power optimization control method.

Fig. 2 is the power tracking figure of a kind of speed-changing oar-changing wind energy conversion system power optimization control method.

Fig. 3 is 5WM with reference to wind energy conversion system under the turbulent wind that wind regime is 11.4m/s, uses the analog simulation result of optimal control method of the present invention.

Detailed description of the invention

The present invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.It is emphasized that it is that the description below is merely exemplary rather than in order to limit the scope of the present invention and application thereof.

A kind of speed-changing oar-changing wind energy conversion system power optimization control method, specifically comprises the following steps that as shown in Figure 1

Step 1: after Wind turbine comes into operation, initializes control system, starts wind speed size before testing machine;

Step 2: during the not up to incision wind speed of the wind speed when wind energy conversion system runs, generator torque is 0, wind energy conversion system not output;

Step 3: the wind speed when wind energy conversion system runs is when cutting change between wind speed and rated wind speed, and torque controller puts into operation;Becoming vane angle θ and keep constant, torque controller should make maximum power output P in power output P trackingmax, wind energy conversion system is cutting maximum power output P when changing between wind speed and rated wind speedmaxFor:

P m a x = 1 2 C P m a x ( θ , λ ) ρπr 2 v 3 = M g ω g - - - ( 1 )

PmaxRepresent the maximum power output of wind energy conversion system, W;ρ is atmospheric density, kg/m3;R is wind wheel radius, m;V is wind speed, m/s;θ is for becoming propeller angle, rad;MgFor generator torque, kN m;ωgFor generator speed, rad/s;ωg=n ωt, ωtFor wind wheel angular velocity, rad/s;For power coefficient;λ is tip speed ratio,

Wind energy conversion system, when wind speed is for change between incision wind speed and rated wind speed, maintains generator torque M during peak powergFor:

M g = K o p t ω g 2 - - - ( 2 )

Wherein,

Step 4: the wind speed when wind energy conversion system runs is when more than rated wind speed less than cut-out wind speed, torque controller comes into operation with pitch control device simultaneously, wherein torque controller is Gain-scheduling control device, and pitch control device is the PID controller of auto-adaptive parameter, and its control method is as follows:

Step 1: initialize PID controller parameter Kp(θ (k)), Ki(θ(k));

Step 2: according to upper moment propeller pitch angle change value, calculates the parameter value of current PID controller:

Kp(θ (k))=kp/(G+Δθ(k-1)) (5)

Ki(θ (k))=ki/(G+Δθ(k-1)) (6)

In formula, kp, kiIt is respectively PID controller proportional and the integral term value when systematic steady state, Kp(θ (k)), Ki(θ (k)) is the PID controller adaptation value when system dynamics, and Δ θ (k-1) is the change value of a upper moment propeller pitch angle, and G is constant, generally takes between 7-8;

Step 3: the propeller pitch angle change value of calculating current time pitch control device:

Δ θ=Kp(θ(k))·(ωg(k-1)-ωg(k))+Ki(θ(k))·(ωg(k-1)-ωrate) (7)

In formula, Δ θ is the propeller pitch angle change value of current time pitch control device;Kp(θ (k)) and Ki(θ (k)) is respectively the PID controller adaptation value when system dynamics;ωg(k-1) it is a upper moment generator speed value;ωgK () is current time generator speed value;ωrateFor electromotor rated speed;

Step 4: the output propeller pitch angle of calculating pitch control device:

θ (k)=θ (k-1)+Δ θ (8)

In formula, θ (k) is current time pitch control device output valve;θ (k-1) is a upper moment pitch control device output valve;Δ θ is the propeller pitch angle change value of current time pitch control device.

In order to prevent pitch control device from frequently switching near rated wind speed, it is arranged switching law is: when moment propeller pitch angle changing value Δ θ (k-1) is less than-0.1 ° on pitch control device, make propeller pitch angle change value Δ θ=-0.1 ° of current time pitch control device;When moment propeller pitch angle changing value Δ θ (k-1) is more than 0.1 ° on pitch control device, make propeller pitch angle change value Δ θ=0.1 ° of current time pitch control device.

Modifying factor ξ corresponding for corresponding generator torque:

Wherein, ω is electromotor actual speed, ωrFor the rated speed of electromotor, ωmaxMaximum (top) speed for electromotor;

Generator torque M nowgFor:

M g = ξK o p t ω g 2 - - - ( 3 )

Maximum power output expression formula is:

P m a x = M g · ω g = ξK o p t ω g 3 - - - ( 4 )

Step 5: when the wind speed when wind energy conversion system runs is more than cut-out wind speed, wind energy conversion system braking mechanism starts action, and wind energy conversion system is out of service, and Wind turbines cuts out electrical network.

A kind of power tracking figure of speed-changing oar-changing wind energy conversion system power optimization control method.When wind speed is less than rated wind speed, use speed Control mode, by adjusting electromotor electromagnetic torque, make wind energy conversion system in optimum efficiency CPmaxLower operation;When wind speed is higher than rated wind speed, pitch control device comes into operation, and makes maximum power output be limited in rated value by regulation propeller pitch angle.Fig. 3 is that 5WM reference wind energy conversion system is under the turbulent wind that wind regime is 11.4m/s, use the analog simulation result of optimal control method of the present invention, as seen from the figure by this optimization method, the dynamic overshooting making power substantially reduces (near 150s in figure), greatly reducing owing to the impact of fitful wind etc. makes wind energy conversion system produce the phenomenon of the most high-power output at short notice, power output tends towards stability.

The above; being only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the simple modification that can readily occur in, equivalent variations, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.

Claims (3)

1. a speed-changing oar-changing wind energy conversion system power optimization control method, it is characterised in that specifically comprise the following steps that
Step 1: after Wind turbine comes into operation, initializes control system, and before starting testing machine, wind speed is big Little;
Step 2: during the not up to incision wind speed of the wind speed when wind energy conversion system runs, generator torque is 0, wind-force Machine not output;
Step 3: when the wind speed when wind energy conversion system runs changes between incision wind speed and rated wind speed, torque Controller puts into operation, and wherein torque controller is variable-speed controller;Become vane angle θ and keep constant, torque control Device processed should make maximum power output P in power output P trackingmax, wind energy conversion system is at incision wind speed and specified wind Maximum power output P when changing between speedmaxFor:
P m a x = 1 2 C P m a x ( θ , λ ) ρπr 2 v 3 = M g ω g - - - ( 1 )
PmaxRepresent the maximum power output of wind energy conversion system, W;ρ is atmospheric density, kg/m3;R is wind wheel half Footpath, m;V is wind speed, m/s;θ is for becoming propeller angle, rad;MgFor generator torque, kN m;ωg For generator speed, rad/s;ωg=n ωt, ωtFor wind wheel angular velocity, rad/s;For Power coefficient;λ is tip speed ratio,
Wind energy conversion system, when wind speed is for change between incision wind speed and rated wind speed, maintains generating during peak power Machine torque MgFor:
M g = K o p t ω g 2 - - - ( 2 )
Wherein,
Step 4: the wind speed when wind energy conversion system runs more than rated wind speed less than cut-out wind speed time, torque control Device processed comes into operation with pitch control device simultaneously, and wherein torque controller is Gain-scheduling control device, pitch control Device is PID controller;Modifying factor ξ corresponding for corresponding generator torque:
ξ = ( 1 + 0.9 · ω r ω max - ω r ) - 0.9 ω m a x - ω r · ω ;
Wherein, ω is electromotor actual speed, ωrFor the rated speed of electromotor, ωmaxFor electromotor Maximum (top) speed;
Generator torque M nowgFor:
M g = ξK o p t ω g 2 - - - ( 3 )
Maximum power output expression formula is:
P m a x = M g · ω g = ξK o p t ω g 3 - - - ( 4 )
Step 5: when the wind speed when wind energy conversion system runs is more than cut-out wind speed, wind energy conversion system braking mechanism starts to move Making, wind energy conversion system is out of service, and Wind turbines cuts out electrical network.
The most according to claim 1, a kind of speed-changing oar-changing wind energy conversion system power optimization control method, its feature exists In, the wind speed when wind energy conversion system runs is when more than rated wind speed less than cut-out wind speed, and pitch control device is certainly The PID controller of adaptation parameter, its control method is as follows:
Step 1: initialize PID controller parameter Kp(θ (k)), Ki(θ(k));
Step 2: according to upper moment propeller pitch angle change value, calculates the parameter value of current PID controller:
Kp(θ (k))=kp/(G+Δθ(k-1)) (5)
Ki(θ (k))=ki/(G+Δθ(k-1)) (6)
In formula, kp, kiIt is respectively PID controller proportional and the integral term value when systematic steady state, Kp(θ (k)), Ki(θ (k)) is the PID controller adaptation value when system dynamics, and Δ θ (k-1) is upper The change value of one moment propeller pitch angle, G is constant, generally takes between 7-8;
Step 3: the propeller pitch angle change value of calculating current time pitch control device:
Δ θ=Kp(θ(k))·(ωg(k-1)-ωg(k))+Ki(θ(k))·(ωg(k-1)-ωrate) (7)
In formula, Δ θ is the propeller pitch angle change value of current time pitch control device;Kp(θ (k)) and Ki(θ(k)) It is respectively the PID controller adaptation value when system dynamics;ωg(k-1) it is a upper moment generator speed Value;ωgK () is current time generator speed value;ωrateFor electromotor rated speed;
Step 4: the output propeller pitch angle of calculating pitch control device:
θ (k)=θ (k-1)+Δ θ (8)
In formula, θ (k) is current time pitch control device output valve;θ (k-1) is a upper moment pitch control Device output valve;Δ θ is the propeller pitch angle change value of current time pitch control device.
The most according to claim 2, a kind of speed-changing oar-changing wind energy conversion system power optimization control method, its feature exists In, in order to prevent pitch control device from frequently switching near rated wind speed, it is arranged switching law is: when When moment propeller pitch angle changing value Δ θ (k-1) is less than-0.1 ° on pitch control device, current time is made to become oar control Propeller pitch angle change value Δ θ=-0.1 ° of device processed;When a moment propeller pitch angle changing value on pitch control device When Δ θ (k-1) is more than 0.1 °, make propeller pitch angle change value Δ θ=0.1 ° of current time pitch control device.
CN201610274408.7A 2016-04-28 2016-04-28 A kind of speed-changing oar-changing wind energy conversion system power optimization control method CN105986961B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610274408.7A CN105986961B (en) 2016-04-28 2016-04-28 A kind of speed-changing oar-changing wind energy conversion system power optimization control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610274408.7A CN105986961B (en) 2016-04-28 2016-04-28 A kind of speed-changing oar-changing wind energy conversion system power optimization control method

Publications (2)

Publication Number Publication Date
CN105986961A true CN105986961A (en) 2016-10-05
CN105986961B CN105986961B (en) 2018-07-31

Family

ID=57044057

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610274408.7A CN105986961B (en) 2016-04-28 2016-04-28 A kind of speed-changing oar-changing wind energy conversion system power optimization control method

Country Status (1)

Country Link
CN (1) CN105986961B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106451558A (en) * 2016-11-29 2017-02-22 国网上海市电力公司 Power network system with large-scale wind power integration
CN106545468A (en) * 2016-10-09 2017-03-29 上海交通大学 A kind of propeller pitch angle self-optimization method and system of MW class wind turbine group
CN107154762A (en) * 2017-05-17 2017-09-12 苏州半唐电子有限公司 A kind of control method without sensing permagnetic synchronous motor optimum efficiency tracking
CN107330183A (en) * 2017-06-29 2017-11-07 华北电力大学 A kind of wind power utilization computational methods based on service data
CN108180110A (en) * 2017-12-22 2018-06-19 内蒙古久和能源装备有限公司 The control method of blade of wind-driven generator
CN108223269A (en) * 2016-12-14 2018-06-29 北京金风科创风电设备有限公司 Wind power generating set is overrun the traversing method and device of failure
CN108612624A (en) * 2016-12-13 2018-10-02 北京金风科创风电设备有限公司 A kind of method for controlling number of revolution and device of wind-driven generator
CN109139364A (en) * 2018-08-23 2019-01-04 合肥为民电源有限公司 A kind of wind-power electricity generation control method and device persistently to generate electricity under strong wind
CN109139365A (en) * 2018-09-03 2019-01-04 浙江运达风电股份有限公司 A kind of optimized rotating speed control method improving large-scale wind electricity unit generation performance
CN110513248A (en) * 2019-08-15 2019-11-29 华北电力科学研究院有限责任公司 It is a kind of with the blower award setting method and device for actively supporting power grid function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003239843A (en) * 2002-02-20 2003-08-27 Toyo Electric Mfg Co Ltd Maximum output control method of generator driven by wind mill
CN101592127A (en) * 2009-06-22 2009-12-02 浙江运达风力发电工程有限公司 A kind of independent pitch control method for large wind turbine
CN102635499A (en) * 2012-04-18 2012-08-15 中船重工(重庆)海装风电设备有限公司 Rotational speed and torque control device and method of wind turbine generator set
EP2500562A2 (en) * 2011-03-17 2012-09-19 Gamesa Innovation & Technology, S.L. Methods and systems for alleviating the loads generated in wind turbines by wind asymmetries
CN102996335A (en) * 2012-10-24 2013-03-27 南车株洲电力机车研究所有限公司 Decoupling control method for variable pitch control and torque control of large wind turbine unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003239843A (en) * 2002-02-20 2003-08-27 Toyo Electric Mfg Co Ltd Maximum output control method of generator driven by wind mill
CN101592127A (en) * 2009-06-22 2009-12-02 浙江运达风力发电工程有限公司 A kind of independent pitch control method for large wind turbine
EP2500562A2 (en) * 2011-03-17 2012-09-19 Gamesa Innovation & Technology, S.L. Methods and systems for alleviating the loads generated in wind turbines by wind asymmetries
CN102635499A (en) * 2012-04-18 2012-08-15 中船重工(重庆)海装风电设备有限公司 Rotational speed and torque control device and method of wind turbine generator set
CN102996335A (en) * 2012-10-24 2013-03-27 南车株洲电力机车研究所有限公司 Decoupling control method for variable pitch control and torque control of large wind turbine unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
马宏忠: "《风力发电机及其控制》", 31 January 2016 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545468A (en) * 2016-10-09 2017-03-29 上海交通大学 A kind of propeller pitch angle self-optimization method and system of MW class wind turbine group
CN106451558A (en) * 2016-11-29 2017-02-22 国网上海市电力公司 Power network system with large-scale wind power integration
CN108612624A (en) * 2016-12-13 2018-10-02 北京金风科创风电设备有限公司 A kind of method for controlling number of revolution and device of wind-driven generator
CN108612624B (en) * 2016-12-13 2019-09-20 北京金风科创风电设备有限公司 A kind of method for controlling number of revolution and device of wind-driven generator
CN108223269A (en) * 2016-12-14 2018-06-29 北京金风科创风电设备有限公司 Wind power generating set is overrun the traversing method and device of failure
CN107154762A (en) * 2017-05-17 2017-09-12 苏州半唐电子有限公司 A kind of control method without sensing permagnetic synchronous motor optimum efficiency tracking
CN107154762B (en) * 2017-05-17 2019-04-23 苏州半唐电子有限公司 A kind of control method without sensing permanent magnet synchronous motor optimum efficiency tracking
CN107330183A (en) * 2017-06-29 2017-11-07 华北电力大学 A kind of wind power utilization computational methods based on service data
CN107330183B (en) * 2017-06-29 2020-04-17 华北电力大学 Wind power utilization rate calculation method based on operation data
CN108180110A (en) * 2017-12-22 2018-06-19 内蒙古久和能源装备有限公司 The control method of blade of wind-driven generator
CN109139364B (en) * 2018-08-23 2020-04-03 合肥为民电源有限公司 Wind power generation control method and device for continuous power generation under strong wind
CN109139364A (en) * 2018-08-23 2019-01-04 合肥为民电源有限公司 A kind of wind-power electricity generation control method and device persistently to generate electricity under strong wind
CN109139365A (en) * 2018-09-03 2019-01-04 浙江运达风电股份有限公司 A kind of optimized rotating speed control method improving large-scale wind electricity unit generation performance
CN110513248A (en) * 2019-08-15 2019-11-29 华北电力科学研究院有限责任公司 It is a kind of with the blower award setting method and device for actively supporting power grid function

Also Published As

Publication number Publication date
CN105986961B (en) 2018-07-31

Similar Documents

Publication Publication Date Title
CN104917201B (en) Double-fed blower fan active power and frequency control device and method that simulation inertia is combined with hypervelocity
Aho et al. A tutorial of wind turbine control for supporting grid frequency through active power control
Pao et al. A tutorial on the dynamics and control of wind turbines and wind farms
US10364796B2 (en) Control method for a wind turbine
US7299627B2 (en) Assembly of energy flow collectors, such as windpark, and method of operation
EP1442216B1 (en) Rotor with extendable blades and control criteria therefor
CN103795089B (en) Based on the variable-speed wind-power unit primary frequency modulation method that hypervelocity is coordinated with change oar
KR100810990B1 (en) Power generation system having vertical wind turbine of jet-wheel type for wind power
US5652485A (en) Fuzzy logic integrated electrical control to improve variable speed wind turbine efficiency and performance
Eisenhut et al. Wind-turbine model for system simulations near cut-in wind speed
AU779007B2 (en) A method of operating a turbine
Morren et al. Wind turbines emulating inertia and supporting primary frequency control
Fadaeinedjad et al. Simulation of a wind turbine with doubly fed induction generator by FAST and Simulink
Whitby et al. Performance of pitch and stall regulated tidal stream turbines
Bianchi et al. Wind turbine control systems: principles, modelling and gain scheduling design
DK2556249T3 (en) a wind turbine
Fu et al. Integrated wind turbine controller with virtual inertia and primary frequency responses for grid dynamic frequency support
Zhang et al. Pitch angle control for variable speed wind turbines
CN106374496A (en) Frequency modulation characteristic control policy for doubly-fed wind turbine generator-energy storage system by simulating synchronous machine
US9341163B2 (en) Wind-turbine-generator control apparatus, wind turbine generator system, and wind-turbine-generator control method
US8836154B2 (en) Wind turbine control methods for improving the production of energy
US8441138B2 (en) Wind turbine
US7275912B2 (en) Management system for the operation of a wind turbine
CN101730796B (en) A method of operating a wind turbine with pitch control, a wind turbine and a cluster of wind turbines
CN101440783B (en) Operation control method of wind power generation

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant