CN109494805A - A kind of the virtual synchronous machine control method and relevant apparatus of wind power plant - Google Patents
A kind of the virtual synchronous machine control method and relevant apparatus of wind power plant Download PDFInfo
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- CN109494805A CN109494805A CN201811623313.7A CN201811623313A CN109494805A CN 109494805 A CN109494805 A CN 109494805A CN 201811623313 A CN201811623313 A CN 201811623313A CN 109494805 A CN109494805 A CN 109494805A
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Abstract
This application discloses the virtual synchronous machine control methods and relevant apparatus of a kind of wind power plant, this method comprises: carrying out Optimal calculation using revolving speed optimization algorithm according to real-time wind speed and default off-load ratio, obtain rotational speed optimization result and propeller pitch angle optimum results；Deviation calculating is carried out to power grid rated frequency and power grid real-time frequency, obtains frequency departure；Rotational speed regulation instruction is carried out according to the real-time revolving speed of blower, frequency departure and rotational speed optimization result to calculate, and obtains active power instruction；Propeller pitch angle regulating command calculating is carried out according to frequency departure and propeller pitch angle optimum results, obtains propeller pitch angle instruction；By active power instruction input to synchronous motor model device, by propeller pitch angle instruction input to Variable-pitch Controller, to realize that virtual synchronous machine controls.The method achieve the maximized virtual synchronous machine controls of energy storage, can provide effective electric energy to power grid and support.
Description
Technical field
This application involves wind power plant control technology field, in particular to the virtual synchronous machine control method of a kind of wind power plant,
Virtual synchronous machine control system, wind power plant control equipment and computer readable storage medium.
Background technique
With the continuous development of power technology, in the power grid based on fired power generating unit, when mains frequency declines Shi Ketong
The active power of increase fired power generating unit is crossed to support mains frequency, to guarantee the stable operation of power grid.And Wind turbines institute energy
The maximum active power of output is limited by wind speed, limited to the supporting role of mains frequency.It is quick with installed capacity of wind-driven power
Rise, for the safe and stable operation for guaranteeing power grid, it is necessary to try to improve the mains frequency enabling capabilities of Wind turbines.
Currently, generating enough supports to power grid using virtual synchronous machine technology in order to when mains frequency generates fluctuation
Ability.There are mainly two types of virtual synchronous machine control methods, including variable pitch Control of decreasing load and speedup Control of decreasing load.Specifically, variable pitch
Control of decreasing load mainly when Wind turbines operate normally, actively reduces wind energy utilization by increasing propeller pitch angle；When power grid frequency
When rate declines, by reducing propeller pitch angle, the wind energy utilization of Wind turbines is improved, to export more active power support power grids
Frequency.Speedup Control of decreasing load mainly when Wind turbines operate normally, actively reduces wind energy utilization by increasing speed；When
When mains frequency declines, Wind turbines revolving speed is reduced, wind energy utilization on the one hand can be improved, on the other hand releasable Wind turbines
The rotation function of storage is simultaneously converted into active output, and both of which can increase the active power of Wind turbines output to support electricity
Net frequency.
But variable pitch Control of decreasing load fully rely on reduce wind energy utilization come reserve support mains frequency needed for spare appearance
Amount, does not carry out rotation energy storage using rotor, reserved spare capacity using wind energy loss as cost, seriously affects wind power plant completely
Economic benefit.Although spare capacity can be further increased by configuring the energy-storage systems such as battery, wind-powered electricity generation and energy storage are formed
The virtual synchronous machine of system, but will lead to increased costs in this way, and there is also dirts in production, use and removal process for battery
The problem of dye and aging.
In addition, speedup Control of decreasing load is on the one hand by reducing wind energy utilization come spare needed for reserved support mains frequency
Capacity, while also utilizing rotor and carrying out rotation energy storage, therefore the capacity of additional energy-storage system can be reduced to a certain extent.But
It is that the control program does not account for how maximumlly acting on using the rotation energy storage of rotor, therefore cannot drop to the maximum extent
The capacity of low energy-storage system.
Therefore, rotation energy storage of the virtual synchronous machine in control how is improved, to provide enough power grid frequencies to power grid
Rate enabling capabilities are the Important Problems of those skilled in the art's concern.
Summary of the invention
The purpose of the application be to provide the virtual synchronous machine control method of wind power plant a kind of, virtual synchronous machine control system,
Wind power plant controls equipment and computer readable storage medium, by using revolving speed as largest optimization target, the optimization that will be obtained
As a result it is adjusted instruction to calculate, realizes the maximized virtual synchronous machine control of energy storage, effective electricity can be provided to power grid
It can support.
In order to solve the above technical problems, the application provides a kind of virtual synchronous machine control method of wind power plant, comprising:
Optimal calculation is carried out using revolving speed optimization algorithm according to real-time wind speed and default off-load ratio, obtains rotational speed optimization
As a result with propeller pitch angle optimum results；
Deviation calculating is carried out to power grid rated frequency and power grid real-time frequency, obtains frequency departure；
Rotational speed regulation instruction meter is carried out according to the real-time revolving speed of blower, the frequency departure and the rotational speed optimization result
It calculates, obtains active power instruction；
Propeller pitch angle regulating command calculating is carried out according to the frequency departure and the propeller pitch angle optimum results, obtains propeller pitch angle
Instruction；
By the active power instruction input to synchronous motor model device, by the propeller pitch angle instruction input to variable pitch
Away from controller, to realize that virtual synchronous machine controls.
Optionally, Optimal calculation is carried out using revolving speed optimization algorithm according to real-time wind speed and default off-load ratio, obtained
Rotational speed optimization result and propeller pitch angle optimum results, comprising:
Revolving speed is maximized and carries out construction of function as the target of majorized function, obtains rotational speed optimization objective function；
By the default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range and generator-side converter wear rated power
As the rotational speed optimization bound for objective function；
It is calculated according to the real-time wind speed according to the rotational speed optimization objective function, obtains the rotational speed optimization result
With the propeller pitch angle optimum results.
Optionally, rotational speed regulation is carried out according to the real-time revolving speed of blower, the frequency departure and the rotational speed optimization result
Instruction calculates, and obtains active power instruction, comprising:
The rotational speed optimization result and the deviation of the real-time revolving speed of blower are subjected to proportional integration adjusting, obtain active power
Basic value；
By the frequency departure multiplied by the sagging coefficient of predetermined power, the added value of the active power is obtained；
The basic value of the active power is added with the added value of the active power, the active power is obtained and refers to
It enables.
Optionally, propeller pitch angle regulating command calculating is carried out according to the frequency departure and the propeller pitch angle optimum results, obtained
It is instructed to propeller pitch angle, comprising:
Using the propeller pitch angle optimum results as the basic value of propeller pitch angle；
By the frequency departure multiplied by default pitch adjustment factor, the added value of the propeller pitch angle is obtained；
The added value that the basic value of the propeller pitch angle is subtracted to the propeller pitch angle obtains the propeller pitch angle instruction.
The application also provides a kind of virtual synchronous machine control system of wind power plant, comprising:
Optimal calculation module, it is optimal for being carried out according to real-time wind speed and default off-load ratio using revolving speed optimization algorithm
It calculates, obtains rotational speed optimization result and propeller pitch angle optimum results；
Frequency departure calculates module, for carrying out deviation calculating to power grid rated frequency and power grid real-time frequency, obtains frequency
Rate deviation；
Rotational speed regulation instruction calculation module, for excellent according to the real-time revolving speed of blower, the frequency departure and the revolving speed
Change result and carry out rotational speed regulation instruction calculating, obtains active power instruction；
Propeller pitch angle regulating command computing module, for carrying out paddle according to the frequency departure and the propeller pitch angle optimum results
Elongation regulating command calculates, and obtains propeller pitch angle instruction；
Control instruction output module is used for by the active power instruction input to synchronous motor model device, by institute
Propeller pitch angle instruction input is stated to Variable-pitch Controller, to realize that virtual synchronous machine controls.
Optionally, the Optimal calculation module, comprising:
Majorized function structural unit carrying out construction of function as the target of majorized function for maximizing revolving speed, obtaining
Rotational speed optimization objective function；
Constraint condition adding unit, for by the default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range with
And generator-side converter wear rated power is as the rotational speed optimization bound for objective function；
Optimization calculation unit is obtained for being calculated according to the real-time wind speed according to the rotational speed optimization objective function
To the rotational speed optimization result and the propeller pitch angle optimum results.
Optionally, the rotational speed regulation instruction calculation module, comprising:
Active power basic value computing unit, for carrying out the rotational speed optimization result and the deviation of the real-time revolving speed of blower
Proportional integration is adjusted, and obtains the basic value of active power；
Active power added value computing unit, for the frequency departure multiplied by the sagging coefficient of predetermined power, to be obtained institute
State the added value of active power；
Active power instructs computing unit, for by the added value of the basic value of the active power and the active power
It is added, obtains the active power instruction.
Optionally, the propeller pitch angle regulating command computing module, comprising:
Propeller pitch angle basic value acquiring unit, for using the propeller pitch angle optimum results as the basic value of propeller pitch angle；
Propeller pitch angle added value computing unit, it is described for multiplied by default pitch adjustment factor, obtaining the frequency departure
The added value of propeller pitch angle；
Propeller pitch angle instruction computing unit is obtained for the basic value of the propeller pitch angle to be subtracted to the added value of the propeller pitch angle
It is instructed to the propeller pitch angle.
The application also provides a kind of wind power plant control equipment, comprising:
Memory, for storing computer program；
Processor realizes the step of virtual synchronous machine control method as described above when for executing the computer program
Suddenly.
The application also provides a kind of computer readable storage medium, and calculating is stored on the computer readable storage medium
The step of machine program, the computer program realizes virtual synchronous machine control method as described above when being executed by processor.
The virtual synchronous machine control method of a kind of wind power plant provided herein, comprising: according to real-time wind speed and preset
Off-load ratio carries out Optimal calculation using revolving speed optimization algorithm, obtains rotational speed optimization result and propeller pitch angle optimum results；To electricity
Net rated frequency and power grid real-time frequency carry out deviation calculating, obtain frequency departure；It is inclined according to the real-time revolving speed of blower, the frequency
The poor and described rotational speed optimization result carries out rotational speed regulation instruction and calculates, and obtains active power instruction；According to the frequency departure
Propeller pitch angle regulating command calculating is carried out with the propeller pitch angle optimum results, obtains propeller pitch angle instruction；The active power is instructed
It is input to synchronous motor model device, by the propeller pitch angle instruction input to Variable-pitch Controller, to realize virtual synchronous
Machine control.
It is optimized by using default off-load ratio, using revolving speed as maximized optimal conditions, and rotates energy storage
More it is proportional to square of revolving speed, so that it may the rotation function deposit in optimization virtual synchronous machine control is maximized, it is thus obtained
Rotational speed optimization result and propeller pitch angle optimum results, then optimum results are respectively obtained into corresponding adjustment instruction by calculating, it realizes
The maximized virtual synchronous machine control of energy storage as far as possible provides effective power grid and supports when power grid fluctuates.
The application also provides virtual synchronous machine control method, the virtual synchronous machine control system, wind power plant of a kind of wind power plant
Equipment and computer readable storage medium are controlled, there is the above beneficial effect, this will not be repeated here.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of the virtual synchronous machine control method of wind power plant provided by the embodiment of the present application；
Fig. 2 is the structural block diagram of the grid side virtual synchronous machine control method of the embodiment of the present application；
Fig. 3 is the structural block diagram of the blower side virtual synchronous machine control method of the embodiment of the present application；
Fig. 4 is a kind of structural schematic diagram of the virtual synchronous machine control system of wind power plant provided by the embodiment of the present application.
Specific embodiment
The core of the application be to provide the virtual synchronous machine control method of wind power plant a kind of, virtual synchronous machine control system,
Wind power plant controls equipment and computer readable storage medium, by using revolving speed as largest optimization target, the optimization that will be obtained
As a result it is adjusted instruction to calculate, realizes the maximized virtual synchronous machine control of energy storage, effective electricity can be provided to power grid
It can support.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Currently, variable pitch Control of decreasing load fully relies on reduction wind energy utilization to reserve support mains frequency institute in the prior art
The spare capacity needed, does not carry out rotation energy storage using rotor, reserved spare capacity is completely using wind energy loss as cost, seriously
Influence the economic benefit of wind power plant.Although spare capacity can be further increased by configuring the energy-storage systems such as battery, formed
The virtual synchronous machine of wind-powered electricity generation and energy-storage system, but will lead to increased costs in this way, and battery is in production, use and removal process
In there is also pollution and the problem of aging.In addition, on the one hand speedup Control of decreasing load reserves support by reducing wind energy utilization
Spare capacity needed for mains frequency, while also utilizing rotor and carrying out rotation energy storage, therefore can reduce to a certain extent attached
Add the capacity of energy-storage system.But the control program does not account for how maximumlly acting on using the rotation energy storage of rotor, because
This cannot reduce the capacity of energy-storage system to the maximum extent.
Therefore, the application provides a kind of virtual synchronous machine control method of wind power plant, by using default off-load ratio into
Row optimization, using revolving speed as maximized optimal conditions, and rotates square that energy storage is more proportional to revolving speed, so that it may maximize
Optimize the rotation function deposit in the control of virtual synchronous machine, thus obtained rotational speed optimization result and propeller pitch angle optimum results, then
Optimum results are respectively obtained into corresponding adjustment instruction by calculating, realize the maximized virtual synchronous machine control of energy storage, when
When power grid fluctuates, effective power grid support is provided as far as possible.
Referring to FIG. 1, Fig. 1 is a kind of stream of the virtual synchronous machine control method of wind power plant provided by the embodiment of the present application
Cheng Tu.
In the present embodiment, this method may include:
S101 carries out Optimal calculation using revolving speed optimization algorithm according to real-time wind speed and default off-load ratio, is turned
Fast optimum results and propeller pitch angle optimum results；
This step is mainly using revolving speed as optimization aim, and progress Optimal calculation obtains rotational speed optimization result and propeller pitch angle is excellent
Change result.
Wherein, Optimal calculation can be calculated using particle swarm algorithm, can also be counted using differential evolution algorithm
It calculates, any one the Optimal calculation method that can also be calculated, and can be provided using the prior art using genetic algorithm.It can
See in this step that the mode for carrying out Optimal calculation is not unique, is not specifically limited herein.
Optionally, this step may include:
Step 1, revolving speed is maximized and carries out construction of function as the target of majorized function, obtain rotational speed optimization target letter
Number；
Step 2, by default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range and the specified function of generator-side converter wear
Rate is as rotational speed optimization bound for objective function；
Step 3, it is calculated according to real-time wind speed according to rotational speed optimization objective function, obtains rotational speed optimization result and pitch
Angle and optimizing result.
The process that more specifically optimization calculates is mainly described in this optinal plan.Mainly determine rotational speed optimization target letter
Number, determines constraint condition, then optimizes calculating, obtain optimum results.Wherein, it is excellent not limit progress equally for this optinal plan
The mode of change, any one optimal way that can be provided using the prior art.
S102 carries out deviation calculating to power grid rated frequency and power grid real-time frequency, obtains frequency departure；
This step is intended to calculate frequency departure.Environment due to using rotation energy storage is determined according to mains frequency, because
This needs to calculate real-time frequency departure, to carry out corresponding virtual synchronous machine control.
S103 carries out rotational speed regulation instruction according to the real-time revolving speed of blower, frequency departure and rotational speed optimization result and calculates, obtains
It is instructed to active power；
On the basis of S101 and S102, this step is intended to calculate active power instruction.Particularly, according to blower reality
When revolving speed, frequency departure and rotational speed optimization result carry out rotational speed regulation instruction and calculate, obtain active power instruction.Wherein, needle
The instruction that revolving speed is adjusted namely is adjusted active power.
Optionally, this step may include:
Step 1, rotational speed optimization result and the deviation of the real-time revolving speed of blower are subjected to proportional integration adjusting, obtain active power
Basic value；
Step 2, frequency departure is obtained into the added value of active power multiplied by the sagging coefficient of predetermined power；
Step 3, the basic value of active power is added with the added value of active power, obtains active power instruction.
This optinal plan is mainly to provide a kind of method of calculating active power instruction.It is wherein a, mainly calculate
The basic value and added value of function power obtain active power instruction after being added.
S104 carries out propeller pitch angle regulating command calculating according to frequency departure and propeller pitch angle optimum results, obtains propeller pitch angle and refer to
It enables；
On the basis of S101 and S102, this step is intended to calculate propeller pitch angle regulating command according to frequency departure.This step
Propeller pitch angle instruction in rapid is mainly adjusted the propeller pitch angle of Wind turbines, so that the present embodiment is realized to revolving speed and pitch
The synergic adjustment at angle improves the utilization rate of wind energy, reduces energy waste.
Optionally, this step may include:
Step 1, using propeller pitch angle optimum results as the basic value of propeller pitch angle；
Step 2, frequency departure is obtained into the added value of propeller pitch angle multiplied by default pitch adjustment factor；
Step 3, the added value that the basic value of propeller pitch angle is subtracted to propeller pitch angle obtains propeller pitch angle instruction.
This optinal plan is mainly to provide a kind of scheme of calculating propeller pitch angle instruction.Wherein, it also gets basic
Value and added value obtain propeller pitch angle instruction after basic value is subtracted added value.
S105, by active power instruction input to synchronous motor model device, by propeller pitch angle instruction input to feather
Controller, to realize that virtual synchronous machine controls.
On the basis of S103 and S104, this step be intended to according to calculate active power instruction and propeller pitch angle instruct into
The corresponding control of row.
It should be noted that the present embodiment in specific application environment can the virtual synchronous machine to grid side control,
Can also the virtual synchronous machine to blower side control, as long as connecting in not ipsilateral network.
It should be noted that the embodiment of the present application does not limit the execution sequence between S101 and S102, and not
Execution sequence between S103 and S104 is limited.The sequence of execution shown in Fig. 1 is one of which.
To sum up, the present embodiment is optimized by using default off-load ratio, using revolving speed as maximized optimal conditions,
And rotate square that energy storage is more proportional to revolving speed, so that it may maximize the rotation function storage in optimization virtual synchronous machine control
It is standby, thus obtained rotational speed optimization result and propeller pitch angle optimum results, then by optimum results by calculate respectively obtain it is corresponding
Adjustment instruction realizes the maximized virtual synchronous machine control of energy storage and provides as far as possible effectively when power grid fluctuates
Power grid support.
On the basis of a upper embodiment, the present embodiment provides a kind of controls of the virtual synchronous machine of more specifical wind power plant
Method.In the present embodiment by taking the virtual synchronous machine of net side as an example, it is appreciated that it is virtually same to be that it can be applied in blower side
In step machine.This method is by being adjusted instruction for obtained optimum results and calculating, realize using revolving speed as largest optimization target
The maximized virtual synchronous machine control of energy storage, can provide effective electric energy to power grid and support.
Referring to FIG. 2, Fig. 2 is the structural block diagram of the grid side virtual synchronous machine control method of the embodiment of the present application.
Blower side virtual synchronous machine control algolithm in the present embodiment, comprising:
Blower side virtual synchronous machine control algolithm is used to control the generator-side converter wear in Wind turbines, and existing permanent magnetism can be used
The blower side virtual synchronous machine control technology of synchronous wind unit, mainly controlling target is to control DC bus-bar voltage in the phase
Prestige value, and the power factor controlling of motor is lost in unity power factor with reducing.
Grid side virtual synchronous machine control algolithm in the present embodiment, comprising:
Grid side virtual synchronous machine control algolithm is used to control grid-side converter in Wind turbines, wind wheel blade, including
Energy storage Control of decreasing load module, synchronous motor model, reactive controller, SVPWM (Space Vector Pulse Width
Modulation), Variable-pitch Controller, wherein energy storage Control of decreasing load module is main innovation point of the invention, synchronous motor
The prior art can be used in model, reactive controller, SVPWM, Variable-pitch Controller.
1) relationship between each module:
Energy storage Control of decreasing load module is according to the wind of preset power grid rated frequency, off-load ratio and real-time measurement
Speed, mains frequency, rotation speed of fan, calculate active power instruction, propeller pitch angle instruction, and wherein active power instruction, which is sent into, synchronizes electricity
Variable-pitch Controller is sent into Motivation Model, propeller pitch angle instruction.
Synchronous motor model is according to active command obtained, in conjunction with the reactive command and real-time measurement of setting
Network voltage electric current calculates the output voltage signal of grid-side converter, the modulation through SVPWM module, controls grid-side converter
In switching device.
Variable-pitch Controller is instructed according to propeller pitch angle obtained, adjusts the propeller pitch angle of wind wheel blade.
2) working principle of energy storage Control of decreasing load module:
The working principle of optimization algorithm: wind energy conversion system revolving speed is maximized into (square that rotation energy storage is proportional to revolving speed) as excellent
The target of change, by preset wind energy conversion system off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range, generator-side converter wear volume
Determine constraint condition of the power as optimization, using optimum solving method, according to real-time wind speed, solution enables wind energy conversion system revolving speed maximum
Change and meet the wind energy conversion system revolving speed and propeller pitch angle of above-mentioned constraint condition.
The calculation method of active command:
Step 1, the deviation of optimization algorithm generates rotational speed optimization result and rotation speed of fan, by proportional and integral controller,
The basic value for generating active power realizes energy storage Control of decreasing load when mains frequency is normal；
Step 2, the deviation of power grid rated frequency and mains frequency generates the attached of active power multiplied by the sagging coefficient of power
It is value added, active support is provided in mains frequency fluctuation；
Step 3, the basic value of active power is added with added value, forms active command, is input to synchronous motor mould
Type.
The calculation method of propeller pitch angle instruction:
Step 1, the pitch optimum results that optimization algorithm generates are the basic value of propeller pitch angle, are realized when mains frequency is normal
Energy storage Control of decreasing load；
Step 2, the deviation of power grid rated frequency and mains frequency generates the additional of propeller pitch angle multiplied by pitch adjustment factor
Value, active support is provided in mains frequency fluctuation；
Step 3, the basic value of propeller pitch angle is subtracted into added value, forms propeller pitch angle instruction, is input to Variable-pitch Controller.
3) operational effect:
When mains frequency is rated frequency, running of wind generating set is in energy storage Control of decreasing load state.
When mains frequency underfrequency, the active command of energy storage Control of decreasing load module output will increase, propeller pitch angle
Instruction will reduce；Active command increases so that grid-side converter exports more active power, so that Wind turbines revolving speed
Reduce, thus Wind turbines by improve wind energy utilization, release rotor rotate energy storage be power grid provide active power support,
Improve mains frequency.
When mains frequency is higher than rated frequency, the active command of energy storage Control of decreasing load module output will reduction, propeller pitch angle
Instruction will increase；Active command reduces so that grid-side converter exports less active power, so that Wind turbines revolving speed
Rise, therefore Wind turbines rotate the active power that energy storage reduces output by reducing wind energy utilization, increasing rotor, reduce electricity
Net frequency.
As it can be seen that the embodiment of the present application provides a kind of virtual synchronous machine control method of wind power plant, it can be by using pre-
If off-load ratio optimizes, using revolving speed as maximized optimal conditions, and square that energy storage is more proportional to revolving speed is rotated,
The rotation function deposit in optimization virtual synchronous machine control, thus obtained rotational speed optimization result and propeller pitch angle can be maximized
Optimum results, then optimum results are respectively obtained into corresponding adjustment instruction by calculating, it is maximized virtual same to realize energy storage
The control of step machine provides effective power grid support when power grid fluctuates as far as possible.
In addition, the virtual synchronous machine control method of the present embodiment can be applied in blower side, with the content in the present embodiment
It is similar.
Referring to FIG. 3, Fig. 3 is the structural block diagram of the blower side virtual synchronous machine control method of the embodiment of the present application.
Grid side virtual synchronous machine control algolithm, comprising:
Grid side virtual synchronous machine control algolithm can be used existing double-fed asynchronous for the grid-side converter in control figure 3
The grid side virtual synchronous machine control technology of Wind turbines, mainly controlling target is it is expected DC bus-bar voltage control
Value, and the reactive power for controlling current transformer output follows reactive command.
Blower side virtual synchronous machine control algolithm, comprising:
Blower side virtual synchronous machine control algolithm subtracts for the generator-side converter wear in control figure 3, wind wheel blade, including energy storage
Control module, synchronous motor model, reactive controller, SVPWM, Variable-pitch Controller are carried, wherein energy storage Control of decreasing load module
For main innovation point of the invention, existing skill is can be used in synchronous motor model, reactive controller, SVPWM, Variable-pitch Controller
Art.
1) relationship between each module:
Relationship substantially phase between each module of grid side virtual synchronous machine control algolithm in embodiment corresponding with Fig. 2
Together, difference is that controlled current transformer by " grid-side converter " is switched to " generator-side converter wear ".
2) working principle of energy storage Control of decreasing load module:
The work of the energy storage Control of decreasing load module of grid side virtual synchronous machine control algolithm in embodiment corresponding with Fig. 2
Principle is substantially the same, and difference is that controlled current transformer by " grid-side converter " is switched to " generator-side converter wear ".
3) operational effect:
The operational effect of grid side virtual synchronous machine control algolithm in embodiment corresponding with Fig. 2 is substantially the same, difference
It is that controlled current transformer by " grid-side converter " is switched to " generator-side converter wear ".
As it can be seen that the embodiment of the present application provides a kind of virtual synchronous machine control method of wind power plant, again may be by adopting
It is optimized with default off-load ratio, using revolving speed as maximized optimal conditions, and rotates energy storage and be more proportional to revolving speed
Square, so that it may maximize optimization virtual synchronous machine control in rotation function deposit, thus obtained rotational speed optimization result and
Propeller pitch angle optimum results, then optimum results are respectively obtained into corresponding adjustment instruction by calculating, it is maximized to realize energy storage
The control of virtual synchronous machine provides effective power grid support when power grid fluctuates as far as possible.
A kind of virtual synchronous machine control system of wind power plant provided by the embodiments of the present application is introduced below, is hereafter retouched
A kind of virtual synchronous machine control system for the wind power plant stated and a kind of above-described virtual synchronous machine control method of wind power plant
Reference can be corresponded to each other.
Referring to FIG. 4, Fig. 4 is a kind of knot of the virtual synchronous machine control system of wind power plant provided by the embodiment of the present application
Structure schematic diagram.
In the present embodiment, which may include:
Optimal calculation module 100, for being carried out according to real-time wind speed and default off-load ratio using revolving speed optimization algorithm
Optimal calculation obtains rotational speed optimization result and propeller pitch angle optimum results；
Frequency departure calculates module 200, for carrying out deviation calculating to power grid rated frequency and power grid real-time frequency, obtains
Frequency departure；
Rotational speed regulation instruction calculation module 300, for according to the real-time revolving speed of blower, frequency departure and rotational speed optimization result
It carries out rotational speed regulation instruction to calculate, obtains active power instruction；
Propeller pitch angle regulating command computing module 400, for carrying out propeller pitch angle according to frequency departure and propeller pitch angle optimum results
Regulating command calculates, and obtains propeller pitch angle instruction；
Control instruction output module 500 is used for by active power instruction input to synchronous motor model device, by pitch
Angle instruction input is to Variable-pitch Controller, to realize that virtual synchronous machine controls.
Optionally, the Optimal calculation module 100 may include:
Majorized function structural unit carrying out construction of function as the target of majorized function for maximizing revolving speed, obtaining
Rotational speed optimization objective function；
Constraint condition adding unit is used for default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range and machine
Side current transformer rated power is as rotational speed optimization bound for objective function；
It is excellent to obtain revolving speed for being calculated according to real-time wind speed according to rotational speed optimization objective function for optimization calculation unit
Change result and propeller pitch angle optimum results.
Optionally, the rotational speed regulation instruction calculation module 300 may include:
Active power basic value computing unit, for rotational speed optimization result and the deviation of the real-time revolving speed of blower to be carried out ratio
Integral adjustment obtains the basic value of active power；
Active power added value computing unit, for frequency departure multiplied by the sagging coefficient of predetermined power, to be obtained wattful power
The added value of rate；
Active power instruction computing unit is obtained for the basic value of active power to be added with the added value of active power
It is instructed to active power.
Optionally, the propeller pitch angle regulating command computing module 400 may include:
Propeller pitch angle basic value acquiring unit, for using propeller pitch angle optimum results as the basic value of propeller pitch angle；
Propeller pitch angle added value computing unit, for frequency departure multiplied by default pitch adjustment factor, to be obtained propeller pitch angle
Added value；
Propeller pitch angle instructs computing unit to obtain propeller pitch angle for the basic value of propeller pitch angle to be subtracted to the added value of propeller pitch angle
Instruction.
The embodiment of the present application also provides a kind of wind power plant control equipment, comprising:
Memory, for storing computer program；
Processor realizes virtual synchronous machine controlling party as described above in Example when for executing the computer program
The step of method.
The embodiment of the present application also provides a kind of computer readable storage medium, stores on the computer readable storage medium
There is computer program, the computer program realizes virtual synchronous machine control as described above in Example when being executed by processor
The step of method.
The computer readable storage medium may include: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond scope of the present application.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above to a kind of virtual synchronous machine control method of wind power plant provided herein, virtual synchronous machine control system
System, wind power plant control equipment and computer readable storage medium are described in detail.Specific case pair used herein
The principle and embodiment of the application is expounded, the present processes that the above embodiments are only used to help understand
And its core concept.It should be pointed out that for those skilled in the art, before not departing from the application principle
Put, can also to the application, some improvement and modification can also be carried out, these improvement and modification also fall into the guarantor of the claim of this application
It protects in range.
Claims (10)
1. a kind of virtual synchronous machine control method of wind power plant characterized by comprising
Optimal calculation is carried out using revolving speed optimization algorithm according to real-time wind speed and default off-load ratio, obtains rotational speed optimization result
With propeller pitch angle optimum results；
Deviation calculating is carried out to power grid rated frequency and power grid real-time frequency, obtains frequency departure；
Rotational speed regulation instruction is carried out according to the real-time revolving speed of blower, the frequency departure and the rotational speed optimization result to calculate, and is obtained
It is instructed to active power；
Propeller pitch angle regulating command calculating is carried out according to the frequency departure and the propeller pitch angle optimum results, propeller pitch angle is obtained and refers to
It enables；
By the active power instruction input to synchronous motor model device, by the propeller pitch angle instruction input to feather control
Device processed, to realize that virtual synchronous machine controls.
2. virtual synchronous machine control method according to claim 1, which is characterized in that according to real-time wind speed and default off-load
Ratio carries out Optimal calculation using revolving speed optimization algorithm, obtains rotational speed optimization result and propeller pitch angle optimum results, comprising:
Revolving speed is maximized and carries out construction of function as the target of majorized function, obtains rotational speed optimization objective function；
Using the default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range and generator-side converter wear rated power as
The rotational speed optimization bound for objective function；
It is calculated according to the real-time wind speed according to the rotational speed optimization objective function, obtains the rotational speed optimization result and institute
State propeller pitch angle optimum results.
3. virtual synchronous machine control method according to claim 1, which is characterized in that according to the real-time revolving speed of blower, described
Frequency departure and the rotational speed optimization result carry out rotational speed regulation instruction and calculate, and obtain active power instruction, comprising:
The rotational speed optimization result and the deviation of the real-time revolving speed of blower are subjected to proportional integration adjusting, obtain the basic of active power
Value；
By the frequency departure multiplied by the sagging coefficient of predetermined power, the added value of the active power is obtained；
The basic value of the active power is added with the added value of the active power, obtains the active power instruction.
4. virtual synchronous machine control method according to claim 1, which is characterized in that according to the frequency departure and described
Propeller pitch angle optimum results carry out propeller pitch angle regulating command calculating, obtain propeller pitch angle instruction, comprising:
Using the propeller pitch angle optimum results as the basic value of propeller pitch angle；
By the frequency departure multiplied by default pitch adjustment factor, the added value of the propeller pitch angle is obtained；
The added value that the basic value of the propeller pitch angle is subtracted to the propeller pitch angle obtains the propeller pitch angle instruction.
5. a kind of virtual synchronous machine control system of wind power plant characterized by comprising
Optimal calculation module, based on using the progress of revolving speed optimization algorithm optimal according to real-time wind speed and default off-load ratio
It calculates, obtains rotational speed optimization result and propeller pitch angle optimum results；
Frequency departure calculates module, and for carrying out deviation calculating to power grid rated frequency and power grid real-time frequency, it is inclined to obtain frequency
Difference；
Rotational speed regulation instruction calculation module, for according to the real-time revolving speed of blower, the frequency departure and the rotational speed optimization knot
Fruit carries out rotational speed regulation instruction and calculates, and obtains active power instruction；
Propeller pitch angle regulating command computing module, for carrying out propeller pitch angle according to the frequency departure and the propeller pitch angle optimum results
Regulating command calculates, and obtains propeller pitch angle instruction；
Control instruction output module is used for by the active power instruction input to synchronous motor model device, by the paddle
Elongation instruction input is to Variable-pitch Controller, to realize that virtual synchronous machine controls.
6. virtual synchronous machine control system according to claim 5, which is characterized in that the Optimal calculation module, comprising:
Majorized function structural unit carrying out construction of function as the target of majorized function for maximizing revolving speed, obtaining revolving speed
Optimization object function；
Constraint condition adding unit is used for the default off-load ratio, rotational speed regulation range, propeller pitch angle adjustable range and machine
Side current transformer rated power is as the rotational speed optimization bound for objective function；
Optimization calculation unit obtains institute for being calculated according to the real-time wind speed according to the rotational speed optimization objective function
State rotational speed optimization result and the propeller pitch angle optimum results.
7. virtual synchronous machine control system according to claim 5, which is characterized in that the rotational speed regulation instruction calculates mould
Block, comprising:
Active power basic value computing unit, for the rotational speed optimization result and the deviation of the real-time revolving speed of blower to be carried out ratio
Integral adjustment obtains the basic value of active power；
Active power added value computing unit, for multiplied by the sagging coefficient of predetermined power, obtaining the frequency departure described to have
The added value of function power；
Active power instructs computing unit, for by the added value phase of the basic value of the active power and the active power
Add, obtains the active power instruction.
8. virtual synchronous machine control system according to claim 5, which is characterized in that the propeller pitch angle regulating command calculates
Module, comprising:
Propeller pitch angle basic value acquiring unit, for using the propeller pitch angle optimum results as the basic value of propeller pitch angle；
Propeller pitch angle added value computing unit, for the frequency departure multiplied by default pitch adjustment factor, to be obtained the pitch
The added value at angle；
Propeller pitch angle instructs computing unit to obtain institute for the basic value of the propeller pitch angle to be subtracted to the added value of the propeller pitch angle
State propeller pitch angle instruction.
9. a kind of wind power plant controls equipment characterized by comprising
Memory, for storing computer program；
Processor realizes such as Claims 1-4 described in any item virtual synchronous machine controls when for executing the computer program
The step of method processed.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program is realized when the computer program is executed by processor such as the described in any item virtual synchronous machine controls of Claims 1-4
The step of method.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030148A (en) * | 2019-04-22 | 2019-07-19 | 中南大学 | The nonlinear prediction pitch control method measured in advance based on wind speed |
| CN113852103A (en) * | 2021-11-01 | 2021-12-28 | 华北电力大学（保定） | Virtual rigidity controller of variable speed wind turbine generator and design method thereof |
| CN114439682A (en) * | 2022-01-10 | 2022-05-06 | 华能大理风力发电有限公司 | Control method and device of wind generating set |
| CN114825481A (en) * | 2022-06-14 | 2022-07-29 | 广东工业大学 | Wind power microgrid system and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964086A (en) * | 2018-07-20 | 2018-12-07 | 国家电网有限公司 | A kind of power grid frequency modulation control method and device based on virtual synchronous machine |
-
2018
- 2018-12-28 CN CN201811623313.7A patent/CN109494805A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964086A (en) * | 2018-07-20 | 2018-12-07 | 国家电网有限公司 | A kind of power grid frequency modulation control method and device based on virtual synchronous machine |
Non-Patent Citations (2)
| Title |
|---|
| CAO, YIJIA等: "A Virtual Synchronous Generator Control Strategy for VSC-MTDC Systems", 《IEEE TRANSACTIONS ON ENERGY CONVERSION》 * |
| 柴建云等: "虚拟同步发电机技术在风力发电系统中的应用与展望", 《电力系统自动化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030148A (en) * | 2019-04-22 | 2019-07-19 | 中南大学 | The nonlinear prediction pitch control method measured in advance based on wind speed |
| CN113852103A (en) * | 2021-11-01 | 2021-12-28 | 华北电力大学（保定） | Virtual rigidity controller of variable speed wind turbine generator and design method thereof |
| CN113852103B (en) * | 2021-11-01 | 2023-09-29 | 华北电力大学（保定） | Virtual stiffness controller of variable speed wind turbine generator and design method thereof |
| CN114439682A (en) * | 2022-01-10 | 2022-05-06 | 华能大理风力发电有限公司 | Control method and device of wind generating set |
| CN114439682B (en) * | 2022-01-10 | 2023-04-18 | 华能大理风力发电有限公司 | Control method and device of wind generating set |
| CN114825481A (en) * | 2022-06-14 | 2022-07-29 | 广东工业大学 | Wind power microgrid system and control method |
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