CN108879767A - Wind power generating set high voltage crossing control method, apparatus and system - Google Patents
Wind power generating set high voltage crossing control method, apparatus and system Download PDFInfo
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Abstract
The invention discloses a kind of wind power generating set high voltage crossing control method, apparatus and system, this method includes：Regional power grid controller sends high voltage crossing control instruction when network voltage is higher than preset threshold；Wind power plant central controller according to carrying out priority ranking from big to small, and generates and sends first and second high voltage crossing control signal to the prediction power value of each wind power generating set；The wind power generating set that first high voltage crossing control signal comes top N for controlling priority is run when network voltage is higher than preset threshold with preset high voltage crossing operation reserve；Second high voltage crossing control signal is run for controlling other wind power generating sets off-grid when network voltage is higher than preset threshold；The controller of wind power generating set receives first or second high voltage crossing and controls signal, and carries out corresponding control action.The normal operation of power grid can be guaranteed in the software and hardware cost of each the smallest high voltage crossing in blower side by implementing the present invention.
Description
Technical field
The present invention relates to wind-driven generator field, in particular to a kind of wind power generating set high voltage crossing control method,
Apparatus and system.
Background technique
With the development of the social economy, electric power resource has become the necessity of people's life.In addition to traditional firepower is sent out
Except the modes such as electricity and hydroelectric generation, the modes such as emerging wind-power electricity generation and nuclear power generation also play an important role.Due to wind-force
Generating electricity has many advantages, such as to clean, is renewable, not destroying geographical environment, using more and more extensive.However, since wind-force has not
Stable characteristic, so the control to wind-power electricity generation is also particularly critical.
Wind-driven generator unit is acquisition wind energy, converts wind energy into the important tool of electric energy.For Wind turbines,
The working condition that the voltage power supply situation of power grid where Wind turbines directly affects Wind turbines works as grid side in the prior art
When voltage sharply increases, direction wind-driven generator group is injected the i.e. power grid injection wind power generating set of certain reverse power by power grid
The presence of reverse active power, the reverse active power of power grid injection wind power generating set steeply rises DC voltage.
Since the power that DC side electric capacity of voltage regulation may store is fixed, i.e., there are threshold values for DC bus active power.Work as DC voltage
When more than threshold value, it will lead to the damage of DC side electric capacity of voltage regulation, and then wind power generating set is caused to be shut down, power grid formed and is impacted.
Therefore it need to guarantee that DC voltage is under threshold value, and the grid side for being able to bear wind power generating set in the stipulated time is high
Voltage, i.e. realization wind power generating set high voltage crossing (High Voltage Ride Through, abbreviation HVRT) function.It is existing
Have in technology, wind power generating set high voltage crossing function is generally realized by way of DC side power circuitry increase-volume.This
Outside, can also by improve DC bus-bar voltage come so that current transformer net side invertor operation in certain high-voltage case, or
Person forms pressure drop by the output reactive current to current transformer, using reactive current on electric network impedance, reduces to promotion direct current
The requirement of busbar voltage.
Since present large-scale wind power unit concentrates access to bring many new problems to electric system, high voltage appearance is worn
More ability is very important one.Having high voltage crossing ability is required for various types of wind power generating sets.Than
As permanent magnet direct-drive blower directly drives using no step-up gear, impeller the variable speed constant frequency of multipole low-speed permanent-magnet synchronous generator
Wind generating technology, blower is grid-connected by full power convertor, realizes the full decoupled of generator and power grid, blower it is grid-connected
Characteristic depends primarily on the technical performance of current transformer grid side.
The high voltage crossing ability of current permanent magnet direct-drive unit is mainly reflected in two aspects：1) the high voltage crossing phase
Between, by being parallel to the brake unit of DC bus, keep active power balance；2) during high voltage crossing, grid-side converter
Network voltage is supported to restore by output reactive current.Wherein, the existing control strategy for wind-power electricity generation is：Normal fortune
Under row state, current-variable controller provides reactive current to power grid according to the instruction of the master controller of wind power generating set.Work as power grid
It breaks down, when executing high voltage crossing, the instruction of master controller is cut off, and current-variable controller is directly according to wind power generating set
Set end voltage fall degree to power grid send reactive current, to help to restore network voltage.When failure is removed, unsteady flow
The reactive current moment of controller output drops to zero.
All be to high voltage crossing ability at present require each wind power generating set that will meet corresponding requirement, that is,
It says, each wind power generating set will match the hardware and software resource of response, and will when high voltage occurs in each power grid
Corresponding high voltage crossing strategy is run, to consume corresponding hardware and software resource.However, it is practical for power grid, as long as
When high voltage occurs, the off-grid of large area not occur in each wind power generating set, would not occur excessive impact to power grid,
When voltage restores normal, it can operate normally.
It would therefore be highly desirable to propose a kind of wind power generating set high voltage crossing control method, apparatus and system, it can be in each wind
The software and hardware cost of the smallest high voltage crossing of pusher side guarantees the normal fortune of power grid when network voltage is higher than preset threshold
Row.
Summary of the invention
In view of this, the present invention is intended to provide a kind of wind power generating set high voltage crossing control method, apparatus and system,
To realize the software and hardware cost in each the smallest high voltage crossing in blower side, guarantee electricity when network voltage is higher than preset threshold
The normal operation of net.
Specifically, the present invention provides a kind of wind power generating set high voltage crossing control method, including step：
Regional power grid controller senses voltage ripple of power network situation in real time, and sends when network voltage is higher than preset threshold
High voltage crossing control instruction includes going out function power and maintain area according to each wind power plant in the high voltage control instruction
General power needed for the stabilization of power grids of domain, lowest power value of each wind power plant determined when network voltage is higher than preset threshold；
The high voltage crossing control instruction that wind power plant central controller receiving area power system controller is sent, and will be right
Answer the wind-resources information input that each wind power generating set senses in wind power plant into preparatory trained power prediction model,
The corresponding prediction power value of each wind power generating set in wind power plant is obtained, and to the pre- measurement of power of wind power generating set each in wind power plant
Rate value according to carrying out priority ranking from big to small, and generates and send the first high voltage crossing control letter according to ranking results
Number and the second high voltage crossing control signal；The first high voltage crossing control signal comes top N for controlling priority
Wind power generating set when network voltage is higher than preset threshold not off-grid, with the operation of preset high voltage crossing operation reserve；
Second high voltage crossing control signal for control the priority come it is other except the wind power generating set of top N
Wind power generating set off-grid when network voltage is higher than preset threshold is run；Wherein, the priority comes the wind-force hair of top N
Prediction power value of the motor group when network voltage is higher than preset threshold is greater than or equal to the lowest power of corresponding wind power plant
Value；
The controller of wind power generating set receives the first high voltage crossing control signal or the second high voltage crossing control
Signal processed, and controlled accordingly according to first high voltage crossing control signal or the second high voltage crossing control signal
Movement.
Further, the wind-resources information includes：Wind density information, the wind that each wind turbine power generation unit senses in real time
Fast information, wind direction information and turbulence intensity information；The power prediction model is machine learning model.
Further, the input information of the power prediction model include the wind-resources information, the velocity information of yaw,
Adjust the vibration information of paddle information, the aerodynamic information of blade and wind turbine power generation unit.
Further, the machine learning model is neural network model.
Specifically, the present invention provides a kind of wind power generating set high voltage crossing control device, including：Control instruction connects
Module is received, the high voltage crossing control sent for receiving area power system controller when network voltage is higher than preset threshold refers to
It enables；In the high voltage control instruction comprising according to each wind power plant go out function power and maintain regional power grid stablize it is required
General power, lowest power value of each wind power plant determined when network voltage is higher than preset threshold；Power prediction module, is used for
The wind-resources information input that each wind power generating set in corresponding wind power plant is sensed is to trained power prediction mould in advance
In type, the corresponding prediction power value of each wind power generating set in wind power plant is obtained；Prioritization module, for in wind power plant
The prediction power value of each wind power generating set according to carrying out priority ranking from big to small；The priority comes the wind of top N
Prediction power value of the power generator group when network voltage is higher than preset threshold is greater than or equal to the described minimum of corresponding wind power plant
Performance number；High voltage crossing controls signal generation module, generates the first high voltage crossing control signal and the second high voltage crossing
Signal is controlled, the first high voltage crossing control signal comes the wind power generating set of top N in electricity for controlling priority
Not off-grid when net voltage is higher than preset threshold, with the operation of preset high voltage crossing operation reserve；Second high voltage crossing
Control signal is used to control the priority and comes other wind power generating sets except the wind power generating set of top N in power grid
Off-grid is run when voltage is higher than preset threshold；Signal transmitting module is controlled, for coming the wind-driven generator of top N to priority
The controller of group sends first high voltage crossing and controls signal, and to priority come top N wind power generating set it
Outer other wind power generating sets send second high voltage crossing and control signal.
Further, the wind-resources information includes：Wind density information, the wind that each wind turbine power generation unit senses in real time
Fast information, wind direction information and turbulence intensity information；The power prediction model is machine learning model.
Further, the input information of the power prediction model include the wind-resources information, the velocity information of yaw,
Adjust the vibration information of paddle information, the aerodynamic information of blade and wind turbine power generation unit.
Further, the machine learning model is neural network model.
Further, the wind power generating set high voltage crossing control device is arranged in wind power plant central controller.
The present invention provides a kind of wind power generating set high voltage crossing control system：The regional power grid controller,
For sensing voltage ripple of power network situation in real time, and high voltage crossing control is sent when network voltage is higher than preset threshold and is referred to
Enable, in the high voltage control instruction comprising according to each wind power plant go out function power and to maintain regional power grid to stablize required
General power, lowest power value of each wind power plant determined when network voltage is higher than preset threshold；The wind power generating set
High voltage crossing control device, for the high voltage crossing control instruction that receiving area power system controller is sent, and will be right
Answer the wind-resources information input that each wind power generating set senses in wind power plant into preparatory trained power prediction model,
The corresponding prediction power value of each wind power generating set in wind power plant is obtained, and to the pre- measurement of power of wind power generating set each in wind power plant
Rate value according to carrying out priority ranking from big to small, and generates and send the first high voltage crossing control letter according to ranking results
Number and the second high voltage crossing control signal；The first high voltage crossing control signal comes top N for controlling priority
Wind power generating set when network voltage is higher than preset threshold not off-grid, with the operation of preset high voltage crossing operation reserve；
Second high voltage crossing control signal for control the priority come it is other except the wind power generating set of top N
Wind power generating set off-grid when network voltage is higher than preset threshold is run；Wherein, the priority comes the wind-force hair of top N
Prediction power value of the motor group when network voltage is higher than preset threshold is greater than or equal to the lowest power of corresponding wind power plant
Value；The controller of the wind power generating set is for receiving the first high voltage crossing control signal or the second high voltage crossing
Signal is controlled, and is controlled accordingly according to first high voltage crossing control signal or the second high voltage crossing control signal
Braking is made.
Wind power generating set high voltage crossing control method of the invention, apparatus and system, pass through regional power grid controller
According to the function power out of each wind power plant and regional power grid is maintained to stablize required general power, determines each wind power plant in power grid
Voltage is higher than lowest power value when preset threshold；And then it is sent and is wrapped by wind power plant central controller receiving area power system controller
The high voltage crossing control instruction of the corresponding lowest power value is included, and each wind power generating set sensing in wind power plant will be corresponded to
Obtained wind-resources information input obtains each wind power generating set pair in wind power plant into preparatory trained power prediction model
The prediction power value answered, and to the prediction power value of wind power generating set each in wind power plant according to progress priority row from big to small
Sequence；And then it is higher than default threshold in network voltage by the wind power generating set that the field grade controller control priority comes top N
Not off-grid when value controls the wind-driven generator that the priority comes top N with the operation of preset high voltage crossing operation reserve
Other wind power generating sets off-grid operation when network voltage is higher than preset threshold except group；Before being come due to the priority
Prediction power value of the N wind power generating sets when network voltage is higher than preset threshold is greater than or equal to the institute of corresponding wind power plant
Lowest power value is stated, comes the wind power generating set of top N when network voltage is higher than preset threshold not by controlling priority
Off-grid can guarantee corresponding wind power plant when power system restoration is normal, and the performance number that can normally export is corresponding lowest power value,
Each wind power plant exports corresponding lowest power value, for regional power grid, can maintain area when voltage restores normal
General power needed for the stabilization of power grids of domain, to guarantee the stability of regional power grid, each region power grid is kept after stablizing, entirely
Electric field is also able to maintain stabilization, realizes the software and hardware cost in each the smallest high voltage crossing in blower side, is higher than in network voltage
Guarantee the normal operation of power grid when preset threshold.
Detailed description of the invention
It is incorporated into specification and the attached drawing for constituting part of specification shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar appended drawing reference is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, without creative efforts, other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of process signal of wind power generating set high voltage crossing control method provided in an embodiment of the present invention
Figure；
Fig. 2 is a kind of structural block diagram of wind power generating set high voltage crossing control device provided in an embodiment of the present invention；
Fig. 3 is a kind of structural block diagram for wind power generating set high voltage crossing control system that bright embodiment provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application can mutual any combination.
The invention will now be described in detail with reference to the accompanying drawings implements the wind power generating set high voltage crossing control method being related to, dress
It sets and system.
Shown in Figure 1, a kind of wind power generating set high voltage crossing control method provided in an embodiment of the present invention includes
Step：
The first step：Regional power grid controller (can be understood as in certain area and (dividing in advance) control in power grid substation
Device processed, such as the power system controller of North China) voltage ripple of power network situation is sensed in real time, and it is higher than default threshold in network voltage
High voltage crossing control instruction is sent when value, in the high voltage control instruction comprising according to each wind power plant go out function power with
And regional power grid is maintained to stablize required general power, each wind power plant determined is minimum when network voltage is higher than preset threshold
Performance number；
Second step：The high voltage crossing control that wind power plant central controller receiving area power system controller is sent refers to
The wind-resources information input for enabling, and each wind power generating set in corresponding wind power plant being sensed is pre- to preparatory trained power
It surveys in model, obtains the corresponding prediction power value of each wind power generating set in wind power plant, and to wind-driven generator each in wind power plant
The prediction power value of group according to carrying out priority ranking from big to small, and generates and send the first high voltage according to ranking results
Pass through control signal and the second high voltage crossing control signal；The first high voltage crossing control signal is for controlling priority
The wind power generating set of the top N not off-grid when network voltage is higher than preset threshold is come, with the operation of preset high voltage crossing
Strategy operation；The second high voltage crossing control signal is for controlling the wind power generating set that the priority comes top N
Except other wind power generating sets network voltage be higher than preset threshold when off-grid run；Wherein, the priority comes preceding N
Prediction power value of the wind power generating set of position when network voltage is higher than preset threshold is greater than or equal to the institute of corresponding wind power plant
State lowest power value；
Third step：The controller of wind power generating set receives the first high voltage crossing control signal or the second high voltage
Control signal is passed through, and signal or the progress of the second high voltage crossing control signal are controlled accordingly according to first high voltage crossing
Control action.
Further, the wind-resources information includes：Wind density information, the wind that each wind turbine power generation unit senses in real time
Fast information, wind direction information and turbulence intensity information；The power prediction model is machine learning model.
Further, the input information of the power prediction model include the wind-resources information, the velocity information of yaw,
Adjust the vibration information of paddle information, the aerodynamic information of blade and wind turbine power generation unit.In addition, influencing the power of wind power generating set
Factor further includes：The speed and precision of yaw.Speed refers to wind vector, but yaw to be registered to fresh air to speed it is slow,
Also it will affect power.Precision also includes the precision of wind vane.Whether torque matches with revolving speed, that is, fast close to best blade tip
Than.It adjusts the performance of paddle and follows response accuracy, wind becomes smaller, and it is slow to open paddle, also will affect power.The essence of tachometric survey
Degree, because torque PID, vane angle PID are calculated according to tachometer value.In addition the aeroperformance of blade itself also will affect wind
The output power of power generator group.
Further, the machine learning model is that the type of the specific neural network of neural network model is unlimited.Passing through will
The wind-resources information of each historical juncture, adjusts paddle information, the aerodynamic information of blade and wind turbine power generation machine at the velocity information of yaw
Input of the vibration information of group as neural network, using the output power value of the wind power generating set of corresponding historical juncture as mind
Output through network, training obtain the parameter of each layer of neural network, and then using trained neural network as trained
Power prediction model.By real-time wind-resources information, the velocity information of yaw, adjust paddle information, the aerodynamic information of blade and blower
Input of the vibration information of generating set as trained neural network, the output of trained neural network is i.e. as real-time
Predict the prediction power value of obtained each wind power generating set.
Firstly, in the above-mentioned first step, each wind power plant go out function power can be according to the specified of each wind power generating set
The number of units of the wind power generating set of output power and wind power plant determines, for example the rated output power of each wind power generating set is
1.5MW, the number of units of the wind power generating set of wind power plant are 20, then go out function power (the total rated output power) of the wind power plant is
1.5*20=30MW.The regional power grid controller can be the controller at regional power grid station, according to each under the regional power grid
The rated output power of wind field determines according to a certain percentage maintains regional power grid to stablize required general power.Such as the regional power grid
To be connected to 10 wind power plants (if total rated power be 450MW, the rated power of each wind power plant be respectively 30MW, 30MW, 30MW,
30MW,30MW,60MW,60MW,60MW,60MW,60MW).If according to 85%, (ratio can be according to historical data determination or root
According to empirically determined, can also be calculated and be determined by optimization according to existing machine learning method certainly) ratio can maintain region
The stabilization of power grid, then maintaining regional power grid to stablize required general power is 450MW*85%=382.5MW.The general power can root
It is shared according to the ratio of the rated power of each wind power plant, lowest power of each wind power plant when network voltage is higher than preset threshold
Value is 25.5MW, 25.5MW, 25.5MW, 25.5MW, 25.5MW, 51MW, 51MW, 51MW, 51MW and 51MW respectively.
Secondly, can predict the reality of each wind power generating set in real time according to current wind-resources information in above-mentioned second step
When output power value, it is preferable that it is also conceivable to the other informations such as the vibration information of wind power generating set and turbulent flow information, with
More accurately predict real-time output power value.Above-mentioned power prediction model specifically can choose existing various machine learning and calculate
Method, such as neural network etc., by historical data, (wind speed, wind direction, turbulent flow and vibration information etc. are as the defeated of power prediction model
Enter, output of the real-time output power of wind power generating set as model), training obtains the pass between output valve and input value
System.As a result, in actual moving process, as long as obtained wind speed, wind direction, turbulent flow and vibration information etc. will be sensed in real time as function
The real-time output power of wind power generating set can be obtained in the input of rate prediction model, and to wind-power electricity generation each in wind power plant
The prediction power value of unit according to carrying out priority ranking from big to small.Such as to the first wind power plant (each wind power generating set
Rated output power be 1.5MW, the number of units of the wind power generating set of wind power plant is 20) for, be higher than in network voltage
Lowest power value when preset threshold is 25.5MW, if predicting the reality of 1-20 platform wind power generating set by power prediction model
When output power be respectively 1.48MW (the 1st), 1.41MW (the 2nd), 1.43MW (the 3rd), 1.48MW (the 4th),
1.41MW (the 5th), 1.42MW (the 6th), 1.48MW (the 7th), 1.41MW (the 8th), 1.38MW (the 9th), 1.25MW
(the 10th), 1.48MW (the 11st), 1.41MW (the 12nd), 1.43MW (the 13rd), 1.48MW (the 14th), 1.41MW
(the 15th), 1.42MW (the 16th), 1.48MW (the 17th), 1.41MW (the 18th), 1.38MW (the 19th), 1.25MW
(the 20th).Then the priority ranking of each wind power generating set is：1.48MW (the 1st), 1.48MW (the 4th), 1.48MW (
7), 1.48MW (the 11st), 1.48MW (the 14th), 1.48MW (the 17th), 1.43MW (the 3rd), 1.43MW the (the 13rd
Platform), 1.42MW (the 6th), 1.42MW (the 16th), 1.41MW (the 2nd), 1.41MW (the 5th), 1.41MW (the 8th),
1.41MW (the 12nd), 1.41MW (the 15th), 1.41MW (the 18th), 1.38MW (the 9th), 1.38MW (the 19th),
1.25MW (the 10th), 1.25MW (the 20th).The default obtained total real-time output power of 18 wind power generating set before ranking
For 25.8MW, therefore the first control instruction is sent to before ranking 18 wind power generating set in the third step, according to preset high electricity
Press to wear more operation reserve (may refer to existing high voltage crossing operation reserve) operation, ensure not off-grid, and be ranked first 9 and
20 wind power generating set off-grid can be run when network voltage is higher than preset threshold, do not consumed in unit and worn for high voltage
The more hardware and software resource of functional configuration extends the service life of the hardware and software resource of high voltage crossing functional configuration,
It realizes the software and hardware cost in each the smallest high voltage crossing in blower side, guarantees power grid when network voltage is higher than preset threshold
Normal operation.
The present embodiment according to the function power out of each wind power plant and maintains regional power grid steady by regional power grid controller
Fixed required general power determines lowest power value of each wind power plant when network voltage is higher than preset threshold；And then by wind-powered electricity generation
Center court controller receiving area power system controller sends the high voltage crossing control including the corresponding lowest power value and refers to
The wind-resources information input for enabling, and each wind power generating set in corresponding wind power plant being sensed is pre- to preparatory trained power
It surveys in model, obtains the corresponding prediction power value of each wind power generating set in wind power plant, and to wind-driven generator each in wind power plant
The prediction power value of group according to carrying out priority ranking from big to small；And then before being come by the field grade controller control priority
N wind power generating sets not off-grid when network voltage is higher than preset threshold, with preset high voltage crossing operation reserve fortune
Row, controls other wind power generating sets that the priority comes except the wind power generating set of top N and is higher than in network voltage
Off-grid is run when preset threshold；Since the wind power generating set that the priority comes top N is higher than default threshold in network voltage
Prediction power value when value is greater than or equal to the lowest power value of corresponding wind power plant, comes top N by controlling priority
Wind power generating set network voltage be higher than preset threshold when not off-grid can guarantee correspondence wind power plant it is normal in power system restoration
When, the performance number that can normally export is corresponding lowest power value, and each wind power plant exports corresponding lowest power value, thus right
For regional power grid, regional power grid can be maintained to stablize required general power when voltage restores normal, to guarantee region electricity
The stability of net, each region power grid are kept after stablizing, and entire electric field is also able to maintain stabilization, are realized minimum in each blower side
High voltage crossing software and hardware cost, network voltage be higher than preset threshold when guarantee power grid normal operation.
It is shown in Figure 2, a kind of wind power generating set high voltage crossing control device 200 provided in an embodiment of the present invention,
The explanation of method shown in FIG. 1 can be applied to the present embodiment, and wind power generating set high voltage crossing control device 200 wraps
It includes：
Control instruction receiving module 201 is sent out for receiving area power system controller when network voltage is higher than preset threshold
The high voltage crossing control instruction sent；Comprising going out function power and dimension according to each wind power plant in the high voltage control instruction
It holds regional power grid and stablizes required general power, lowest power of each wind power plant determined when network voltage is higher than preset threshold
Value；
Power prediction module 203, the wind-resources information sensed for each wind power generating set in wind power plant will to be corresponded to
It is input in preparatory trained power prediction model, obtains the corresponding prediction power value of each wind power generating set in wind power plant；
Prioritization module, for the prediction power value to wind power generating set each in wind power plant according to from big to small into
The sequence of row major grade；The priority comes prediction of the wind power generating set of top N when network voltage is higher than preset threshold
Performance number is greater than or equal to the lowest power value of corresponding wind power plant；
High voltage crossing controls signal generation module, for generating the first high voltage crossing control signal and the second high voltage
Control signal is passed through, the first high voltage crossing control signal is for controlling the wind power generating set that priority comes top N
The not off-grid when network voltage is higher than preset threshold, with the operation of preset high voltage crossing operation reserve；Second high voltage
Control signal is passed through to exist for controlling other wind power generating sets that the priority comes except the wind power generating set of top N
Off-grid is run when network voltage is higher than preset threshold；
Signal transmitting module 209 is controlled, for being sent with the controller for the wind power generating set for coming top N to priority
First high voltage crossing controls signal, and comes to priority other wind-force hair except the wind power generating set of top N
Motor group sends second high voltage crossing and controls signal.
Further, the wind-resources information includes：Wind density information, the wind that each wind turbine power generation unit senses in real time
Fast information, wind direction information and turbulence intensity information；The power prediction model is machine learning model.For wind density and
Speech, when wind speed is identical, density is small, and wind-force is with regard to small, and the output power of wind power generating set is with regard to smaller.Turbulent flow can make play a role
Wind-force become smaller.
Further, the input information of the power prediction model include the wind-resources information, the velocity information of yaw,
Adjust the vibration information of paddle information, the aerodynamic information of blade and wind turbine power generation unit.In addition, influencing the power of wind power generating set
Factor further includes：The speed and precision of yaw.Speed refers to wind vector, but yaw to be registered to fresh air to speed it is slow,
Also it will affect power.Precision also includes the precision of wind vane.Whether torque matches with revolving speed, that is, fast close to best blade tip
Than.It adjusts the performance of paddle and follows response accuracy, wind becomes smaller, and it is slow to open paddle, also will affect power.The essence of tachometric survey
Degree, because torque PID, vane angle PID are calculated according to tachometer value.In addition the aeroperformance of blade itself also will affect wind
The output power of power generator group.
Further, the machine learning model is neural network model, and the type of specific neural network is unlimited.Passing through will
The wind-resources information of each historical juncture, adjusts paddle information, the aerodynamic information of blade and wind turbine power generation machine at the velocity information of yaw
Input of the vibration information of group as neural network, using the output power value of the wind power generating set of corresponding historical juncture as mind
Output through network, training obtain the parameter of each layer of neural network, and then using trained neural network as trained
Power prediction model.By real-time wind-resources information, the velocity information of yaw, adjust paddle information, the aerodynamic information of blade and blower
Input of the vibration information of generating set as trained neural network, the output of trained neural network is i.e. as real-time
Predict the prediction power value of obtained each wind power generating set.
Preferably, the wind power generating set high voltage crossing control device is arranged in wind power plant central controller.
The present embodiment according to the function power out of each wind power plant and maintains regional power grid steady by regional power grid controller
Fixed required general power determines lowest power value of each wind power plant when network voltage is higher than preset threshold；And then by wind-powered electricity generation
Center court controller receiving area power system controller sends the high voltage crossing control including the corresponding lowest power value and refers to
The wind-resources information input for enabling, and each wind power generating set in corresponding wind power plant being sensed is pre- to preparatory trained power
It surveys in model, obtains the corresponding prediction power value of each wind power generating set in wind power plant, and to wind-driven generator each in wind power plant
The prediction power value of group according to carrying out priority ranking from big to small；And then before being come by the field grade controller control priority
N wind power generating sets not off-grid when network voltage is higher than preset threshold, with preset high voltage crossing operation reserve fortune
Row, controls other wind power generating sets that the priority comes except the wind power generating set of top N and is higher than in network voltage
Off-grid is run when preset threshold；Since the wind power generating set that the priority comes top N is higher than default threshold in network voltage
Prediction power value when value is greater than or equal to the lowest power value of corresponding wind power plant, comes top N by controlling priority
Wind power generating set network voltage be higher than preset threshold when not off-grid can guarantee correspondence wind power plant it is normal in power system restoration
When, the performance number that can normally export is corresponding lowest power value, and each wind power plant exports corresponding lowest power value, thus right
For regional power grid, regional power grid can be maintained to stablize required general power when voltage restores normal, to guarantee region electricity
The stability of net, each region power grid are kept after stablizing, and entire electric field is also able to maintain stabilization, are realized minimum in each blower side
High voltage crossing software and hardware cost, network voltage be higher than preset threshold when guarantee power grid normal operation.
It is shown in Figure 3, another kind wind power generating set high voltage crossing control system provided in an embodiment of the present invention, figure
The explanation of method shown in 1 and device shown in Fig. 2 can be applied to the present embodiment, wind power generating set high voltage crossing
Control system 300 includes：Regional power grid controller 301, above-mentioned wind power generating set high voltage crossing control device 200 and with
And the controller 303 of wind power generating set；
The regional power grid controller 301 is higher than in advance for sensing voltage ripple of power network situation in real time, and in network voltage
If sending high voltage crossing control instruction when threshold value, comprising going out function according to each wind power plant in the high voltage control instruction
Power and regional power grid is maintained to stablize required general power, each wind power plant determined is when network voltage is higher than preset threshold
Lowest power value；
The wind power generating set high voltage crossing control device 200, the institute sent for receiving area power system controller
High voltage crossing control instruction is stated, and the wind-resources information input that each wind power generating set in corresponding wind power plant senses is arrived
In preparatory trained power prediction model, the corresponding prediction power value of each wind power generating set in wind power plant is obtained, and to wind
The prediction power value of each wind power generating set is according to carrying out priority ranking from big to small in electric field, and raw according to ranking results
At and send the first high voltage crossing control signal and the second high voltage crossing control signal；The first high voltage crossing control
Signal is used to control priority and comes the wind power generating set of the top N not off-grid when network voltage is higher than preset threshold, with pre-
If high voltage crossing operation reserve operation；Before second high voltage crossing control signal comes for controlling the priority
Other wind power generating sets off-grid operation when network voltage is higher than preset threshold except N wind power generating sets；Wherein,
The priority comes prediction power value of the wind power generating set of top N when network voltage is higher than preset threshold and is greater than or waits
In the lowest power of corresponding wind power plant；
The controller 303 of the wind power generating set is for receiving first high voltage crossing control signal or second high
Voltage ride-through controls signal, and controls signal or the control signal progress of the second high voltage crossing according to first high voltage crossing
Corresponding control action.
The present embodiment according to the function power out of each wind power plant and maintains regional power grid steady by regional power grid controller
Fixed required general power determines lowest power value of each wind power plant when network voltage is higher than preset threshold；And then by wind-powered electricity generation
Center court controller receiving area power system controller sends the high voltage crossing control including the corresponding lowest power value and refers to
The wind-resources information input for enabling, and each wind power generating set in corresponding wind power plant being sensed is pre- to preparatory trained power
It surveys in model, obtains the corresponding prediction power value of each wind power generating set in wind power plant, and to wind-driven generator each in wind power plant
The prediction power value of group according to carrying out priority ranking from big to small；And then before being come by the field grade controller control priority
N wind power generating sets not off-grid when network voltage is higher than preset threshold, with preset high voltage crossing operation reserve fortune
Row, controls other wind power generating sets that the priority comes except the wind power generating set of top N and is higher than in network voltage
Off-grid is run when preset threshold；Since the wind power generating set that the priority comes top N is higher than default threshold in network voltage
Prediction power value when value is greater than or equal to the lowest power value of corresponding wind power plant, comes top N by controlling priority
Wind power generating set network voltage be higher than preset threshold when not off-grid can guarantee correspondence wind power plant it is normal in power system restoration
When, the performance number that can normally export is corresponding lowest power value, and each wind power plant exports corresponding lowest power value, thus right
For regional power grid, regional power grid can be maintained to stablize required general power when voltage restores normal, to guarantee region electricity
The stability of net, each region power grid are kept after stablizing, and entire electric field is also able to maintain stabilization, are realized minimum in each blower side
High voltage crossing software and hardware cost, network voltage be higher than preset threshold when guarantee power grid normal operation.
It will appreciated by the skilled person that realizing all or part of step/units/modules of above-described embodiment
This can be accomplished by hardware associated with program instructions, and foregoing routine can store in computer-readable storage medium, should
When being executed, execution includes the steps that corresponding in above-described embodiment each unit program；And storage medium above-mentioned includes：ROM,
The various media that can store program code such as RAM, magnetic disk or optical disc.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of wind power generating set high voltage crossing control method, which is characterized in that the method includes the steps：
Regional power grid controller senses voltage ripple of power network situation in real time, and high electricity is sent when network voltage is higher than preset threshold
More control instruction is pressed to wear, includes the function power out and maintenance region electricity according to each wind power plant in the high voltage control instruction
Net stablizes required general power, lowest power value of each wind power plant determined when network voltage is higher than preset threshold；
The high voltage crossing control instruction that wind power plant central controller receiving area power system controller is sent, and will corresponding wind
The wind-resources information input that each wind power generating set senses in electric field is obtained into preparatory trained power prediction model
The corresponding prediction power value of each wind power generating set in wind power plant, and to the prediction power value of wind power generating set each in wind power plant
According to carrying out priority ranking from big to small, and according to ranking results generate and send the first high voltage crossing control signal and
Second high voltage crossing controls signal；The first high voltage crossing control signal is for controlling the wind that priority comes top N
Power generator group not off-grid when network voltage is higher than preset threshold, with the operation of preset high voltage crossing operation reserve；It is described
Second high voltage crossing control signal is used to control the priority and comes other wind-force except the wind power generating set of top N
Generating set off-grid when network voltage is higher than preset threshold is run；Wherein, the priority comes the wind-driven generator of top N
Prediction power value of the group when network voltage is higher than preset threshold is greater than or equal to the lowest power value of corresponding wind power plant；
The controller of wind power generating set receives the first high voltage crossing control signal or the second high voltage crossing control letter
Number, and corresponding control is carried out according to first high voltage crossing control signal or the second high voltage crossing control signal and is moved
Make.
2. wind power generating set high voltage crossing control method as described in claim 1, which is characterized in that the wind-resources letter
Breath includes：Wind density information, wind speed information, wind direction information and the turbulence intensity letter that each wind turbine power generation unit senses in real time
Breath；
The power prediction model is machine learning model.
3. wind power generating set high voltage crossing control method as claimed in claim 2, which is characterized in that the power prediction
The input information of model includes the wind-resources information, the velocity information of yaw, adjusts paddle information, the aerodynamic information of blade and wind
The vibration information of machine generating set.
4. wind power generating set high voltage crossing control method as claimed in claim 2 or claim 3, which is characterized in that the machine
Learning model is neural network model.
5. a kind of wind power generating set high voltage crossing control device, which is characterized in that including：
Control instruction receiving module, the height electricity sent for receiving area power system controller when network voltage is higher than preset threshold
Press to wear more control instruction；Comprising going out function power and maintenance region electricity according to each wind power plant in the high voltage control instruction
Net stablizes required general power, lowest power value of each wind power plant determined when network voltage is higher than preset threshold；
Power prediction module, for wind-resources information input that each wind power generating set in wind power plant senses will to be corresponded to pre-
First in trained power prediction model, the corresponding prediction power value of each wind power generating set in wind power plant is obtained；
Prioritization module, it is excellent according to carrying out from big to small for the prediction power value to wind power generating set each in wind power plant
First grade sequence；The priority comes prediction power of the wind power generating set of top N when network voltage is higher than preset threshold
Value is greater than or equal to the lowest power value of corresponding wind power plant；
High voltage crossing controls signal generation module, generates the first high voltage crossing control signal and the control of the second high voltage crossing
Signal, the first high voltage crossing control signal are used to control priority and come the wind power generating set of top N in power grid electricity
Not off-grid when pressure is higher than preset threshold, with the operation of preset high voltage crossing operation reserve；The second high voltage crossing control
Signal is used to control the priority and comes other wind power generating sets except the wind power generating set of top N in network voltage
Off-grid is run when higher than preset threshold；
Signal transmitting module is controlled, sends described first for coming the controller of wind power generating set of top N to priority
High voltage crossing controls signal, and comes to priority other wind power generating sets hair except the wind power generating set of top N
Send the second high voltage crossing control signal.
6. wind power generating set high voltage crossing control device as claimed in claim 5, which is characterized in that the wind-resources letter
Breath includes：Wind density information, wind speed information, wind direction information and the turbulence intensity letter that each wind turbine power generation unit senses in real time
Breath；
The power prediction model is machine learning model.
7. wind power generating set high voltage crossing control device as claimed in claim 6, which is characterized in that the power prediction
The input information of model includes the wind-resources information, the velocity information of yaw, adjusts paddle information, the aerodynamic information of blade and wind
The vibration information of machine generating set.
8. wind power generating set high voltage crossing control device as claimed in claims 6 or 7, which is characterized in that the machine
Learning model is neural network model.
9. wind power generating set high voltage crossing control device as claimed in claim 8, which is characterized in that the wind-power electricity generation
Unit high voltage crossing control device is arranged in wind power plant central controller.
10. a kind of wind power generating set high voltage crossing control system, which is characterized in that including：Regional power grid controller is such as weighed
Benefit require wind power generating set high voltage crossing control device described in any one of 5-9 and and wind power generating set control
Device；
The regional power grid controller is higher than preset threshold for sensing voltage ripple of power network situation in real time, and in network voltage
When send high voltage crossing control instruction, in the high voltage control instruction comprising according to each wind power plant go out function power and
Regional power grid is maintained to stablize required general power, minimum function of each wind power plant determined when network voltage is higher than preset threshold
Rate value；
The wind power generating set high voltage crossing control device, the high voltage sent for receiving area power system controller
Control instruction is passed through, and the wind-resources information input that each wind power generating set in corresponding wind power plant senses is trained to preparatory
In good power prediction model, the corresponding prediction power value of each wind power generating set in wind power plant is obtained, and to each in wind power plant
The prediction power value of wind power generating set is generated and is sent according to carrying out priority ranking from big to small, and according to ranking results
First high voltage crossing controls signal and the second high voltage crossing controls signal；The first high voltage crossing control signal is used for
Control priority comes the wind power generating set of the top N not off-grid when network voltage is higher than preset threshold, with preset high electricity
Press to wear more operation reserve operation；The second high voltage crossing control signal is for controlling the wind that the priority comes top N
Other wind power generating sets off-grid operation when network voltage is higher than preset threshold except power generator group；Wherein, described excellent
First grade comes prediction power value of the wind power generating set of top N when network voltage is higher than preset threshold and is greater than or equal to correspondence
The lowest power value of wind power plant；
The controller of the wind power generating set is worn for receiving the first high voltage crossing control signal or the second high voltage
Signal is more controlled, and signal or the progress of the second high voltage crossing control signal are controlled accordingly according to first high voltage crossing
Control action.
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| CN105939021A (en) * | 2015-12-15 | 2016-09-14 | 国电南瑞科技股份有限公司 | Power grid frequency control method of considering low voltage ride-through capability of fan |
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| CN111509718A (en) * | 2020-05-31 | 2020-08-07 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Safety and stability control system and method for power transmission and transformation |
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