CN115492717A - Method, system, medium and equipment for realizing primary frequency modulation of wind generating set - Google Patents

Method, system, medium and equipment for realizing primary frequency modulation of wind generating set Download PDF

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Publication number
CN115492717A
CN115492717A CN202211007520.6A CN202211007520A CN115492717A CN 115492717 A CN115492717 A CN 115492717A CN 202211007520 A CN202211007520 A CN 202211007520A CN 115492717 A CN115492717 A CN 115492717A
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China
Prior art keywords
power
value
unit
frequency modulation
primary frequency
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Inventor
谭丹
胡健彬
赵晓峻
陈天宇
于虹
陈思范
张瑞
邹荔兵
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MingYang Smart Energy Group Co Ltd
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MingYang Smart Energy Group Co Ltd
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Priority to CN202211007520.6A priority Critical patent/CN115492717A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/327—Rotor or generator speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/328—Blade pitch angle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/335—Output power or torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/70—Type of control algorithm
    • F05B2270/705—Type of control algorithm proportional-integral
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Abstract

The invention discloses a method, a system, a medium and equipment for realizing primary frequency modulation of a wind generating set. In a word, the invention can effectively reduce the action of the variable pitch mechanism, improve the response rate and avoid the long-time running of the unit in the resonance crossing area, thereby reducing the fault during primary frequency modulation and being worthy of popularization.

Description

Method, system, medium and equipment for realizing primary frequency modulation of wind generating set
Technical Field
The invention relates to the technical field of wind power generation, in particular to a method, a system, a storage medium and computing equipment for realizing primary frequency modulation of a wind generating set.
Background
With the increasing maturity of wind power generation technology, grid-connected capacity is gradually increased, and the grid stability problem brought with the grid capacity is increasingly prominent, which also provides a new challenge for the grid support capability of the wind generating set.
In order to ensure the stable operation of the power grid and reduce the influence of wind power access on the frequency quality and stability of the power grid, wind generating sets are increasingly considered to be required to participate in frequency adjustment of the system. At present, a lot of researches are carried out on primary frequency modulation strategies of wind generating sets at home and abroad, and power grid companies also develop corresponding standards to restrict various dynamic change processes of the wind generating sets when participating in primary frequency modulation. When the frequency of the power grid rises or falls, the active power of the whole wind generating set is required to be reduced or increased to support the stability of the frequency of the power grid.
For the control of the wind generating set, the algorithm based on the constant power control responds to the transient change of the set by simultaneously acting the torque control and the pitch control when the power step occurs, but the mode based on the pitch angle control can provide certain power support under the condition of wind speed permission, but has the problem of slow response speed, so that the set cannot respond to the step of the power within the specified time.
When the frequency of a power grid fluctuates, in order to keep the stability of the power grid, active power must be changed rapidly to support the stability of the power grid, a constant power mode is adopted in a traditional primary frequency modulation mode, when given power changes in a step mode, torque and rotating speed both can respond to the change of the active power at the same time, in the stage below rated rotating speed, the rotating speed does not reach a rated value and is in a resonant crossing upper boundary, torque control and variable pitch control play at the same time to meet the change of the power, a converter at the lower stage responds to the torque quickly according to a lower value of the torque, however, the variable pitch control is borne by a unit, due to the limitation of the speed of a variable pitch motor, and when the rotating speed is close to the given value, due to the limitation of the regulating capacity of a PI, the regulating speed is reduced more and less, and the response speed is inevitably insufficient.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for realizing primary frequency modulation of a wind generating set, which can effectively solve the problem of relatively low response speed of a variable-pitch control link during primary frequency modulation and realize that the wind generating set can quickly and effectively respond to the frequency change of a power grid.
The second purpose of the invention is to provide a system for realizing primary frequency modulation of a wind generating set.
A third object of the present invention is to provide a storage medium.
It is a fourth object of the invention to provide a computing device.
The first purpose of the invention is realized by the following technical scheme: a method for realizing primary frequency modulation of a wind generating set is characterized in that when the wind generating set is in a normal generating mode, the following steps are executed:
1) Acquiring a primary frequency modulation zone bit of the unit, if the zone bit is true, executing the step 2), and if the zone bit is false, exiting the primary frequency modulation;
2) Acquiring a resonance crossing zone bit of the unit, exiting primary frequency modulation if the unit is in a resonance crossing interval, and executing the step 3 if the unit is not in the resonance crossing interval;
3) Obtaining a given active Power value and a feedback active Power value of the unit, calculating a difference value delta Power of the given active Power value and the feedback active Power value of the unit, and executing a step 4);
4) According to the calculated difference value delta Power, executing the Power change rate of the corresponding stage, and converting the Power change rate into the set actual Power given value Power 'according to the executed Power change rate' set And step 5) is executed;
5) According to set unit actual Power given value Power' set Calculating the Torque limit value Torque, and executing the step 6);
6) The units being operated according to Torque-limited value TorqueControlling torque PI according to given value w of generator speed set And the feedback value w of the rotating speed of the generator fbk And executing variable pitch PI control of the unit.
Further, in step 3), the calculation formula of the difference Δ Power is as follows:
ΔPower＝Power set -Power fbk
in the formula, power set For a given value of active Power, power fbk To feed back the value of the active power.
Further, in step 4), the Power change rate of the corresponding stage is executed according to the calculated difference value delta Power, and then the Power change rate is converted into set actual Power given value Power 'of the unit according to the executed Power change rate' set The method comprises the following steps:
when the delta Power is less than or equal to the delta Power1, executing the Power change rate Power of the first stage rate1 ；
When delta Power1 < delta Power2, executing Power change rate Power of the second stage rate2 ；
When the delta Power is larger than or equal to the delta Power2, executing the Power change rate Power of the third stage rate3 ；
Wherein, the delta Power1 and the delta Power2 are set threshold values, and the Power is rate1 、Power rate2 、Power rate3 Is the power change difference;
actual Power given value Power of unit' set The calculation formula of (c) is as follows:
Power′ set ＝Power 0 +Power ratei ×t
in the formula, power 0 For the Power value at the initial moment of the Power change, power ratei For a certain phase of power change rate, i =1,2,3; t is from Power 0 To Power' set The duration of (c).
Further, in step 5), the calculation formula of the Torque limit value Torque is as follows:
Torque＝Power′ set /w
in the formula, when the primary frequency modulation flag bit is changed from false to true, the rotating speed value of the generator is calculated according to the following formula, but when the primary frequency modulation flag bit is true, the value of w is not calculated by adopting the following formula, but the rotating speed value of the generator when the primary frequency modulation flag bit is changed from false to true is kept unchanged;
Figure BDA0003808135490000031
Figure BDA0003808135490000032
Figure BDA0003808135490000033
in the formula, w min For minimum speed of operation of the unit, w max For the maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max And the maximum power corresponding to the maximum rotating speed of the unit operation.
Further, in step 6), the given value w of the generator speed is set The calculation formula of (a) is as follows:
Figure BDA0003808135490000041
Figure BDA0003808135490000042
Figure BDA0003808135490000043
in the formula, w min For the minimum speed of operation of the unit, w max For the maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max Maximum speed of rotation for unit operationThe maximum power of (c).
Further, in step 6), the feedback value w of the rotating speed of the generator fbk The actual rotating speed value of the generator detected by the sensor.
The second purpose of the invention is realized by the following technical scheme: a system for realizing primary frequency modulation of a wind generating set is used for realizing the method for realizing the primary frequency modulation of the wind generating set, and comprises the following steps:
the primary frequency modulation zone bit judgment module is used for acquiring a primary frequency modulation zone bit of the unit, judging whether the primary frequency modulation zone bit is true or false, executing the resonance crossing zone bit judgment module if the zone bit is true, and exiting primary frequency modulation if the zone bit is false;
the resonance crossing zone bit judging module is used for acquiring a resonance crossing zone bit of the unit and judging whether the resonance crossing zone bit is in a resonance crossing interval or not, if so, exiting primary frequency modulation, and if not, executing the first calculating module;
the first calculation module is used for acquiring a given active Power value and a feedback active Power value of the unit and calculating the difference value delta Power of the given active Power value and the feedback active Power value of the unit;
the second calculation module executes the Power change rate of the corresponding stage according to the difference value delta Power calculated by the first calculation module, and converts the Power change rate into a set actual Power given value Power 'of the unit according to the executed Power change rate' set ；
The third calculation module is used for setting Power according to the actual Power of the unit' set Calculating a Torque limit value Torque;
the execution module executes the Torque PI control of the unit according to the Torque limit value Torque and gives a value w according to the rotating speed of the generator set And the feedback value w of the rotating speed of the generator fbk And executing variable pitch PI control of the unit.
The third purpose of the invention is realized by the following technical scheme: a storage medium stores a program, and the program is executed by a processor to realize the method for realizing the primary frequency modulation of the wind generating set.
The fourth purpose of the invention is realized by the following technical scheme: a computing device comprises a processor and a memory for storing a program executable by the processor, and when the processor executes the program stored by the memory, the implementation method of the primary frequency modulation of the wind generating set is implemented.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention adopts a constant rotating speed mode, keeps the set rotating speed value unchanged during primary frequency modulation, reduces the action of a variable pitch mechanism, fundamentally solves the problem of insufficient response speed caused by too slow variable pitch control, meets the requirement of response time through the rapid adjustment of torque, can rapidly respond to the requirement of primary frequency modulation of a power grid, and plays a key role in the stability of the whole power grid. In a word, the invention can effectively reduce the action of the variable pitch mechanism, improve the response rate and avoid the long-time running of the unit in the resonance crossing area, thereby reducing the fault during primary frequency modulation and being worthy of popularization.
Drawings
Fig. 1 is a graph of power given versus power feedback.
Fig. 2 is an architecture diagram of the system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Example 1
The embodiment discloses a method for realizing primary frequency modulation of a wind generating set, which comprises the following steps of:
1) Acquiring a primary frequency modulation flag bit of the unit, if the flag bit is true, executing the step 2), and if the flag bit is false, exiting the primary frequency modulation.
2) And (3) acquiring a resonance crossing zone bit of the unit, exiting primary frequency modulation if the unit is in a resonance crossing interval, and executing the step 3) if the unit is not in the resonance crossing interval.
3) Obtaining the Power value Power of the set set And feeding back the Power value Power fbk As shown in FIG. 1, a given value of real Power, power, for a computer group set And feeding back Power value Power fbk Step 4) is executed; wherein, the calculation formula of the difference value delta Power is as follows:
ΔPower＝Power set -Power fbk
4) Executing the Power change rate of the corresponding stage according to the calculated difference value delta Power, and converting the Power change rate into a set actual Power given value Power 'according to the executed Power change rate' set And 5) executing the step:
when the delta Power is less than or equal to delta Power1, executing the Power change rate Power of the first stage rate1 ；
When delta Power1 < delta Power2, executing Power change rate Power of the second stage rate2 ；
When the delta Power is larger than or equal to the delta Power2, executing the Power change rate Power of the third stage rate3 ；
Wherein, the delta Power1 and the delta Power2 are set threshold values, and the Power is rate1 、Power rate2 、Power rate3 Is the power change difference;
actual Power set value Power of unit' set The calculation formula of (a) is as follows:
Power′ set ＝Power 0 +Power ratei ×t
in the formula, power 0 For the Power value at the initial moment of the Power change, power ratei For a certain phase of power change rate, i =1,2,3; t is from Power 0 To Power' set The duration of (c).
5) According to set actual Power given value Power of unit' set Calculating the Torque limit value Torque, and executing the step 6); the calculation formula of the Torque limit value Torque is as follows:
Torque＝Power′ set /w
in the formula, when the primary frequency modulation flag bit is changed from false to true, the rotating speed value of the generator is calculated according to the following formula, but when the primary frequency modulation flag bit is true, the value of w is not calculated by adopting the following formula, but the rotating speed value of the generator when the primary frequency modulation flag bit is changed from false to true is kept unchanged;
Figure BDA0003808135490000071
Figure BDA0003808135490000072
Figure BDA0003808135490000073
in the formula, w min For minimum speed of operation of the unit, w max For the maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max And the maximum power corresponding to the maximum rotating speed of the unit operation.
6) Executing Torque PI control of the unit according to the Torque amplitude limiting value Torque, and setting a value w according to the rotating speed of the generator set And the feedback value w of the rotating speed of the generator fbk Executing variable pitch PI control of the unit; wherein the feedback value w of the rotating speed of the generator fbk The actual rotating speed value of the generator detected by the sensor is the set rotating speed value w of the generator set The calculation formula of (a) is as follows:
Figure BDA0003808135490000074
Figure BDA0003808135490000075
Figure BDA0003808135490000076
in the formula, w min For minimum speed of operation of the unit, w max For maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max And the maximum power corresponding to the maximum rotating speed of the unit operation.
Example 2
The embodiment discloses a system for realizing primary frequency modulation of a wind generating set, which is used for realizing the method for realizing the primary frequency modulation of the wind generating set in the embodiment 1, and as shown in fig. 2, the system comprises the following functional modules:
the primary frequency modulation zone bit judging module is used for acquiring a primary frequency modulation zone bit of the unit and judging whether the primary frequency modulation zone bit is true or false, if the zone bit is true, the resonance crossing zone bit judging module is executed, and if the zone bit is false, the primary frequency modulation is exited;
the resonance crossing zone bit judging module is used for acquiring a resonance crossing zone bit of the unit and judging whether the resonance crossing zone bit is in a resonance crossing interval or not, if so, exiting primary frequency modulation, and if not, executing the first calculating module;
the first calculation module is used for acquiring a given active Power value and a feedback active Power value of the unit and calculating the difference value delta Power of the given active Power value and the feedback active Power value of the unit;
the second calculation module executes the Power change rate of the corresponding stage according to the difference value delta Power calculated by the first calculation module, and converts the Power change rate into a set actual Power given value Power 'of the unit according to the executed Power change rate' set ；
The third calculation module is used for setting Power according to the actual Power of the unit' set Calculating a Torque limit value Torque;
the execution module executes the Torque PI control of the unit according to the Torque limit amplitude Torque and according to the set value w of the rotating speed of the generator set And the feedback value w of the rotating speed of the generator fbk And executing variable pitch PI control of the unit.
Example 3
The embodiment discloses a storage medium, which stores a program, and when the program is executed by a processor, the implementation method of the primary frequency modulation of the wind generating set in embodiment 1 is implemented.
The storage medium in this embodiment may be a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a Random Access Memory (RAM), a usb disk, a removable hard disk, or other media.
Example 4
The embodiment discloses a computing device, which comprises a processor and a memory, wherein the memory is used for storing an executable program of the processor, and when the processor executes the program stored in the memory, the implementation method of the primary frequency modulation of the wind generating set in the embodiment 1 is implemented.
The computing device in this embodiment may be a desktop computer, a notebook computer, a smart phone, a PDA handheld terminal, a tablet computer, a Programmable Logic Controller (PLC), or other terminal devices with a processor function.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (9)

1. A method for realizing primary frequency modulation of a wind generating set is characterized in that when the wind generating set is in a normal power generation mode, the following steps are executed:
1) Acquiring a primary frequency modulation zone bit of the unit, if the zone bit is true, executing the step 2), and if the zone bit is false, exiting primary frequency modulation;
2) Acquiring a resonance crossing zone bit of the unit, exiting primary frequency modulation if the unit is in a resonance crossing interval, and executing the step 3 if the unit is not in the resonance crossing interval;
3) Obtaining a given active Power value and a feedback active Power value of the unit, calculating a difference value delta Power of the given active Power value and the feedback active Power value of the unit, and executing a step 4);
4) According to the calculated difference value delta Power, executing the Power change rate of the corresponding stage, and converting the Power change rate into the set actual Power given value Power 'according to the executed Power change rate' set And step 5) is executed;
5) According to set unit actual Power given value Power' set Calculating the Torque limit value Torque, and executing the step 6);
6) Executing Torque PI control of the unit according to the Torque amplitude limiting value Torque, and setting a value w according to the rotating speed of the generator set And the feedback value w of the rotating speed of the generator fbk And executing variable pitch PI control of the unit.
2. The method for realizing the primary frequency modulation of the wind generating set according to claim 1, characterized in that: in step 3), the calculation formula of the difference value Δ Power is as follows:
ΔPower＝Power set -Power fbk
in the formula, power set For a given value of active Power, power fbk To feed back the value of the active power.
3. The method for realizing the primary frequency modulation of the wind generating set according to claim 1, characterized in that: in step 4), the Power change rate of the corresponding stage is executed according to the calculated difference value delta Power, and then the Power change rate is converted into the set actual Power given value Power 'according to the executed Power change rate' set The method comprises the following steps:
when the delta Power is less than or equal to the delta Power1, executing the Power change rate Power of the first stage rate1 ；
When delta Power1 < delta Power2, executing Power change rate Power of the second stage rate2 ；
When the delta Power is larger than or equal to the delta Power2, executing the Power change rate Power of the third stage rate3 ；
Wherein, the delta Power1 and the delta Power2 are set thresholds, and the Power is rate1 、Power rate2 、Power rate3 Is the power change difference;
actual Power given value Power of unit' set The calculation formula of (a) is as follows:
Power′ set ＝Power 0 +Power ratei ×t
in the formula, power 0 For the Power value at the initial moment of the Power change, power ratei For a certain phase of power change rate, i =1,2,3; t is from Power 0 To Power' set The duration of (c).
4. The method for realizing the primary frequency modulation of the wind generating set according to claim 1, characterized in that: in step 5), the calculation formula of the Torque limit value Torque is as follows:
Torque＝Power′ set /w
in the formula, when the primary frequency modulation flag bit is changed from false to true, the rotating speed value of the generator is calculated according to the following formula, but when the primary frequency modulation flag bit is true, the value of w is not calculated by adopting the following formula, but the rotating speed value of the generator when the primary frequency modulation flag bit is changed from false to true is kept unchanged;
Figure FDA0003808135480000021
Figure FDA0003808135480000022
Figure FDA0003808135480000023
in the formula, w min For the minimum speed of operation of the unit, w max For the maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max And the maximum power corresponding to the maximum rotating speed of the unit operation.
5. The method for realizing the primary frequency modulation of the wind generating set according to claim 1, characterized in that: in step 6), the given generator speed value w set The calculation formula of (c) is as follows:
Figure FDA0003808135480000031
Figure FDA0003808135480000032
Figure FDA0003808135480000033
in the formula, w min For the minimum speed of operation of the unit, w max For maximum speed of operation of the unit, k opt For optimum gain, power min For minimum Power, power, corresponding to minimum rotational speed of unit operation max And the maximum power corresponding to the maximum rotating speed of the unit operation.
6. The method for realizing the primary frequency modulation of the wind generating set according to claim 1, characterized in that: in step 6), the feedback value w of the rotating speed of the generator fbk The actual rotating speed value of the generator detected by the sensor.
7. A system for realizing primary frequency modulation of a wind generating set is characterized in that the method for realizing primary frequency modulation of a wind generating set according to any one of claims 1 to 6 comprises the following steps:
the primary frequency modulation zone bit judging module is used for acquiring a primary frequency modulation zone bit of the unit and judging whether the primary frequency modulation zone bit is true or false, if the zone bit is true, the resonance crossing zone bit judging module is executed, and if the zone bit is false, the primary frequency modulation is exited;
the resonance crossing zone bit judging module is used for acquiring a resonance crossing zone bit of the unit and judging whether the resonance crossing zone bit is in a resonance crossing interval or not, if so, exiting primary frequency modulation, and if not, executing the first calculating module;
the first calculation module is used for acquiring a given active Power value and a feedback active Power value of the unit and calculating the difference value delta Power of the given active Power value and the feedback active Power value of the unit;
the second calculation module executes the Power change rate of the corresponding stage according to the difference value delta Power calculated by the first calculation module, and converts the Power change rate into a set actual Power given value Power 'of the unit according to the executed Power change rate' set ；
The third calculation module is used for setting Power according to the actual Power of the unit' set Calculating a Torque limit value Torque;
the execution module executes the Torque PI control of the unit according to the Torque limit amplitude Torque and according to the set value w of the rotating speed of the generator set And the feedback value w of the rotating speed of the generator fbk And executing variable pitch PI control of the unit.
8. A storage medium storing a program, wherein the program, when executed by a processor, implements the method for implementing primary frequency modulation of a wind turbine generator system according to any one of claims 1 to 6.
9. A computing device comprising a processor and a memory for storing a program executable by the processor, wherein the processor executes the program stored in the memory to implement the method for implementing the primary frequency modulation of a wind turbine generator system according to any one of claims 1 to 6.
CN202211007520.6A 2022-08-22 2022-08-22 Method, system, medium and equipment for realizing primary frequency modulation of wind generating set Pending CN115492717A (en)

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