CN113315174B - Wind power plant unit regulating and controlling method and device, wind power plant control terminal and storage medium - Google Patents
Wind power plant unit regulating and controlling method and device, wind power plant control terminal and storage medium Download PDFInfo
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Abstract
The application provides a wind power plant unit regulation and control method and device, a wind power plant control terminal and a storage medium, and relates to the technical field of wind power plant power generation. According to the method and the device, under the condition that the obtained current active power limit value of the target wind power plant is larger than or equal to the performance evaluation power threshold value, one wind power set is selected from a plurality of wind power sets included in the target wind power plant in a concentrated and alternative mode and is used as the performance evaluation set to carry out wind power generation by maintaining the optimal pitch angle, the rest wind power sets are used as the pitch angle adaptation set to carry out wind power generation by guaranteeing the pitch angle to be adapted to the change of the wind speed, each wind power set in the wind power plant can serve as the pitch angle adaptation set and the performance evaluation set in turn under the condition that the power grid is limited in power, each wind power set in the wind power plant has the opportunity to share the set blade abrasion pressure of the set wind speed adaptation requirement and the set performance evaluation requirement, the fatigue damage of a set variable pitch system is effectively reduced, and the service life of the wind power sets is prolonged.
Description
Technical Field
The application relates to the technical field of wind power plant power generation, in particular to a wind power plant unit regulating and controlling method and device, a wind power plant control terminal and a storage medium.
Background
With the continuous development of science and technology and the continuous progress of society, the demand for electricity is more and more intense, and thus various power generation technologies are developed, wherein the wind power generation technology is an important component. For a wind power plant realizing a wind power generation technology, each wind turbine generator under the wind power plant is usually fixedly configured according to the generator set wind speed adaptation requirement and the generator set performance evaluation requirement under the condition of power grid power limitation, so that a generator set pitch control system of the wind power plant generates a large amount of fatigue damage, and the service life of the wind turbine generator is influenced.
Disclosure of Invention
In view of the above, an object of the present application is to provide a method and an apparatus for regulating and controlling wind turbine generators in a wind farm, a wind farm control terminal and a storage medium, which can make each wind turbine generator in the wind farm alternately serve as a pitch angle adaptive generator meeting a generator wind speed adaptive requirement and a performance evaluation generator meeting a generator performance evaluation requirement under the condition of power grid power limitation, and make each wind turbine generator in the wind farm have an opportunity to share the wear pressure of the turbine blades meeting the generator wind speed adaptive requirement and the generator performance evaluation requirement, thereby effectively reducing the fatigue damage of a turbine variable pitch system and prolonging the service life of the wind turbine generators.
In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:
in a first aspect, the present application provides a method for regulating and controlling a wind farm unit, the method comprising:
the method comprises the steps of obtaining a current active power limit value of a target wind power plant, and comparing the active power limit value with a prestored performance evaluation power threshold value;
and under the condition that the active power limit value is greater than or equal to the performance evaluation power threshold value, alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind power plant as a performance evaluation set to perform wind power generation, and performing wind power generation by using the rest wind turbine sets as a pitch angle adaptation set, wherein each wind turbine set comprises at least one wind turbine set, each wind turbine set under the performance evaluation set performs wind power generation by maintaining the self optimal pitch angle, and each wind turbine set under the pitch angle adaptation set performs wind power generation by ensuring the self pitch angle to adapt to the change of the wind speed.
In an optional embodiment, the step of alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind farm as a performance evaluation set to perform wind power generation, and performing wind power generation by using the remaining wind turbine sets as a blade angle adaptation set, includes:
numbering a plurality of wind turbine generator set sets included in the target wind power plant, and sequencing unit set sequence numbers of the wind turbine generator set sets to obtain a corresponding unit set sequencing result;
according to the unit set sequencing results corresponding to the plurality of wind turbine generator set sets, cyclically selecting a target wind turbine generator set with a matched unit set sequence number in the plurality of wind turbine generator sets according to a preset evaluation interval;
and taking the target wind generating set selected each time as a performance evaluation set of the target wind power plant for wind power generation.
In an optional embodiment, the preset evaluation interval of each of the plurality of wind turbine generator sets included in the target wind farm is in positive correlation with the number of the wind turbine generator sets corresponding to the wind turbine generator set.
In an alternative embodiment, the method further comprises:
and under the condition that the active power limit value is smaller than the performance evaluation power threshold value, all wind generator set sets included in the target wind power plant are used as a blade angle adaptation set to carry out wind power generation.
In a second aspect, the present application provides a wind farm unit regulation and control device, the device comprising:
the power limiting power comparison module is used for obtaining the current active power limiting value of the target wind power plant and comparing the active power limiting value with a prestored performance evaluation power threshold value;
and the unit alternation evaluation module is used for alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind power plant as a performance evaluation unit set to perform wind power generation and using the rest wind turbine sets as a pitch angle adaptation unit set to perform wind power generation under the condition that the active power limit value is greater than or equal to the performance evaluation power threshold value, wherein each wind turbine set comprises at least one wind turbine set, each wind turbine set under the performance evaluation unit set performs wind power generation by maintaining the own optimal pitch angle, and each wind turbine set under the pitch angle adaptation unit set performs wind power generation by ensuring the own pitch angle to adapt to the change of the wind speed.
In an optional embodiment, the unit alternation assessment module includes:
the unit set sequencing submodule is used for numbering a plurality of wind turbine set sets included in the target wind power plant and sequencing unit set sequence numbers of the wind turbine set sets to obtain a corresponding unit set sequencing result;
the wind turbine generator set rotation selection sub-module is used for circularly selecting a target wind turbine generator set with a matched set number in the plurality of wind turbine generator set sets according to a set sequencing result corresponding to the plurality of wind turbine generator set sets and according to a preset evaluation interval;
and the evaluation group power generation submodule is used for taking the target wind power generation set selected each time as the performance evaluation set of the target wind power plant to carry out wind power generation.
In an optional embodiment, the preset evaluation interval of each of the plurality of wind turbine generator sets included in the target wind farm is in positive correlation with the number of the wind turbine generator sets corresponding to the wind turbine generator set.
In an alternative embodiment, the apparatus further comprises:
and the blade angle adaptive power generation module is used for taking all wind turbine generator set sets included in the target wind power plant as blade angle adaptive generator set sets to carry out wind power generation under the condition that the active power limit value is smaller than the performance evaluation power threshold value.
In a third aspect, the present application provides a wind farm control terminal, which includes a processor and a memory, where the memory stores a computer program executable by the processor, and the processor can execute the computer program to implement the wind farm unit regulation and control method described in any one of the foregoing embodiments.
In a fourth aspect, the present application provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for regulating and controlling a wind farm group according to any one of the foregoing embodiments is implemented.
In this case, the beneficial effects of the embodiments of the present application may include the following:
the method comprises the steps that under the condition that the current active power limit value of a target wind power plant is obtained and is larger than or equal to a performance evaluation power threshold value, one wind power set is alternately selected from a plurality of wind power sets in the target wind power plant to serve as a performance evaluation set to carry out wind power generation by maintaining an optimal pitch angle, and the rest wind power sets serve as pitch angle adapting sets to carry out wind power generation by ensuring that the pitch angle is adapted to wind speed change, so that each wind power set in the wind power plant can alternately serve as a pitch angle adapting set meeting the wind speed adapting requirement of the set and a performance evaluation set meeting the performance evaluation requirement of the set under the condition that the power grid limits the power, each wind power set in the wind power plant has the opportunity to share the wear pressure of the blades of the set meeting the wind speed adapting requirement and the performance evaluation requirement of the set, and the fatigue damage of a variable pitch system of the set is effectively reduced, the service life of the wind turbine generator is prolonged.
In order to make the aforementioned objects, features and advantages of the present application comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram of a device composition of a wind farm control terminal provided in an embodiment of the present application;
fig. 2 is a schematic flow chart of a wind farm unit regulation and control method provided in the embodiment of the present application;
FIG. 3 is a flowchart illustrating the sub-steps included in step S220 in FIG. 2;
fig. 4 is a second schematic flow chart of the wind farm unit regulation and control method provided in the embodiment of the present application;
fig. 5 is one of schematic composition diagrams of a wind farm unit control device provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of the components of the unit alternation evaluation module shown in FIG. 5;
fig. 7 is a second schematic composition diagram of a wind farm unit control device according to an embodiment of the present application.
Icon: 10-a wind farm control terminal; 11-a memory; 12-a processor; 13-a communication unit; 100-a wind power plant unit regulating device; 110-a power-limiting power comparison module; 120-unit alternate evaluation module; 130-a paddle angle adaptation power generation module; 121-a unit set ordering submodule; 122-a unit set alternate selection submodule; 123-evaluation group power generation submodule.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be understood that relational terms such as the terms first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The applicant finds out through hard research that a conventional wind power plant control scheme under the condition of power grid power limitation generally sets some wind power plants under a wind power plant to be fixed to be paddle angle adaptive sets meeting the wind speed adaptive requirements of the wind power plants, and sets one or more wind power plants under the wind power plant to be fixed to be performance evaluation sets meeting the performance evaluation requirements of the wind power plants. The active power limit value of the wind power plant during power limit of the power grid is usually smaller than or equal to the whole plant applied power of the wind power plant, the active power limit value is used for representing a target value defined by the corresponding wind power plant for effective generated power under the condition of power limit of the power grid, and the whole plant applied power is used for representing the corresponding wind power plant.
In the process, the fixed configuration of the pitch angle adaptation unit in the wind farm is assigned to a power generation limit value which can be kept constant for a long time and can be changed within a certain value interval. The actual power generation power of the propeller angle adaptation unit is adjusted again by adopting a power generation power limiting value according to a certain time frequency, so that the propeller angle adaptation unit can frequently and locally change the propeller near the power generation power limiting value, and a unit propeller changing system corresponding to the propeller angle adaptation unit directly generates fatigue damage corresponding to the unit wind speed adaptation requirement.
In order to realize the unit power generation performance evaluation operation, the performance evaluation unit in the fixedly configured wind farm generally needs to be maintained in a state of an optimal pitch angle in the power generation process, so that the corresponding power generation performance of the performance evaluation unit is measured when the performance evaluation unit is fully started, and therefore, the blades of the performance evaluation unit are excessively worn near the optimal pitch angle due to wind speed fluctuation, so that a unit pitch system corresponding to the performance evaluation unit directly generates fatigue damage corresponding to the unit performance evaluation requirement.
Therefore, the conventional wind power plant control scheme can cause a large amount of fatigue damage to a generator set pitch control system of the wind power plant, and influences the service life of the wind power generator set. Under the condition, in order to effectively reduce fatigue damage of a variable pitch system of the unit and prolong the service life of the wind turbine, the embodiment of the application realizes the functions by providing the wind power plant unit regulating and controlling method and device, the wind power plant control terminal and the storage medium.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic device composition diagram of a wind farm control terminal 10 provided in an embodiment of the present application. In the embodiment of the present application, the wind farm control terminal 10 may be in communication connection with a central control center of a certain wind farm, and issues a control instruction to the central control center of the wind farm, so as to control the operation condition of each wind turbine generator in the wind farm. The wind farm control terminal 10 may be, but is not limited to, any one of electronic devices such as a personal computer, a mobile terminal, a tablet computer, and a smart television.
The wind farm control terminal 10 may include a wind farm unit control device 100, a memory 11, a processor 12, and a communication unit 13. The various elements of the memory 11, the processor 12 and the communication unit 13 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, the memory 11, the processor 12 and the communication unit 13 may be electrically connected to each other through one or more communication buses or signal lines.
In this embodiment, the Memory 11 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 11 is used for storing a computer program, and the processor 12 can execute the computer program after receiving an execution instruction.
In this embodiment, the processor 12 may be an integrated circuit chip having signal processing capabilities. The Processor 12 may be a general-purpose Processor including at least one of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Network Processor (NP), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, and discrete hardware components. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like that implements or executes the methods, steps and logic blocks disclosed in the embodiments of the present application.
In this embodiment, the communication unit 13 is configured to establish a communication connection between the wind farm control terminal 10 and other electronic devices through a network, and to send and receive data through the network, where the network includes a wired communication network and a wireless communication network. For example, the wind farm control terminal 10 obtains the active power limit value of the wind farm under the condition of power limit of the power grid from the central control center of the corresponding wind farm through the communication unit 13, and the wind farm control terminal 10 may also issue an instruction for the performance evaluation unit and the pitch angle adaptation unit to the central control center of the corresponding wind farm through the communication unit 13, so that the corresponding wind farm regulates and controls the operating condition of each wind turbine according to the instruction.
In the present embodiment, the wind farm group control device 100 includes at least one software functional module that can be stored in the memory 11 in the form of software or firmware or in the operating system of the wind farm control terminal 10. The processor 12 may be configured to execute executable modules stored in the memory 11, such as software functional modules and computer programs included in the wind farm group control device 100. The wind power plant unit regulating and controlling device 100 can enable each wind power unit in a wind power plant to alternately serve as a pitch angle adapting unit meeting unit wind speed adapting requirements and a performance evaluation unit meeting unit performance evaluation requirements under the condition of power grid power limitation, and enables each wind power unit in the wind power plant to have the opportunity of sharing unit blade abrasion pressure of the unit wind speed adapting requirements and the unit performance evaluation requirements, so that fatigue damage of a unit pitch system is effectively reduced, and the service life of the wind power unit is prolonged.
It will be appreciated that the block diagram shown in FIG. 1 is merely one schematic component of the wind farm control terminal 10, and that the wind farm control terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
In the application, in order to ensure that the wind power plant control terminal 10 can effectively reduce the fatigue damage of a variable pitch system of the units under the wind power plant and prolong the service life of the wind power plant, the wind power plant unit regulating and controlling method applied to the wind power plant control terminal 10 is provided to realize the functions. The method for regulating and controlling the wind power plant set provided by the embodiment of the application is correspondingly described below.
Optionally, referring to fig. 2, fig. 2 is a schematic flow chart of a wind farm unit regulation and control method provided in an embodiment of the present application. In this embodiment of the application, the method for regulating and controlling the wind farm units shown in fig. 2 may include step S210 and step S220.
Step S210, obtaining a current active power limit value of the target wind power plant, and comparing the active power limit value with a pre-stored performance evaluation power threshold value.
In this embodiment, when a target wind farm is required to achieve power grid limit, a corresponding active power limit value is usually assigned to the target wind farm by a power grid system according to a change of a total electric quantity of a power grid, so that the wind farm control terminal 10 may obtain a current active power limit value of the target wind farm from a central control center of the target wind farm through a network. Then, the wind farm control terminal 10 compares the current active power limit value of the target wind farm with a pre-stored performance evaluation power threshold value to determine whether to control the target wind farm to perform power generation performance evaluation operation currently. The performance evaluation power threshold is used for representing a minimum power generation power value of the target wind power plant, wherein the power generation capacity of the target wind power plant supports performance evaluation operation under the condition of power limitation of a power grid, so that when the active power limit value is larger than or equal to the performance evaluation power threshold, the target wind power plant is indicated to be capable of achieving the performance evaluation operation under the condition of power limitation of the power grid, and when the active power limit value is smaller than the performance evaluation power threshold, the target wind power plant is indicated to be not suitable for achieving the performance evaluation operation under the condition of power limitation of the power grid.
And S220, under the condition that the active power limit value is larger than or equal to the performance evaluation power threshold value, alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind power plant as a performance evaluation set to perform wind power generation, and performing wind power generation by using the rest wind turbine sets as blade angle adaptation sets.
In this embodiment, the plurality of wind turbines included in the target wind power location may be grouped by the wind farm control terminal 10, so as to divide the plurality of wind turbines included in the target wind power location into a plurality of wind turbine set sets, and each wind turbine set includes at least one wind turbine set. Optionally, the wind farm control terminal 10 may number each wind turbine included in the target wind farm, and divide a plurality of wind turbines with consecutive turbine serial numbers into the same wind turbine set, or randomly select one or more wind turbines with respective corresponding turbine serial numbers and divide the wind turbines into the same wind turbine set. The number of the units of different wind turbine sets can be the same or different.
When it is determined that the current active power limit value of the target wind farm is greater than or equal to the performance evaluation power threshold value, it can be indicated that the target wind farm can currently perform performance evaluation operation, at this time, the wind farm control terminal 10 alternately selects one wind turbine set from a plurality of wind turbine sets correspondingly included in the target wind farm as a performance evaluation set to perform wind power generation, so that the wind turbine set under the target wind farm can perform wind power generation by maintaining the self optimal pitch angle when being used as the performance evaluation set under the performance evaluation set, thereby showing the self true power generation performance and facilitating the performance evaluation operation of the generator set.
When a certain wind turbine set in the multiple wind turbine sets included in the target wind farm is selected as the performance evaluation set, the wind farm control terminal 10 may use the remaining wind turbine sets included in the target wind farm except the performance evaluation set as the pitch angle adaptation set, and at this time, when the wind turbine set in the target wind farm is used as the pitch angle adaptation set under the pitch angle adaptation set, the wind turbine set in the target wind farm can perform wind power generation by ensuring that the pitch angle of the wind turbine set is adapted to the wind speed change on the basis of performing power generation limitation by using a matched power generation limit value, so as to meet the requirement of wind speed adaptation of the wind turbine set.
In this case, the wind farm control terminal 10 can control the plurality of wind turbine generator sets under the target wind farm to alternately serve as the performance evaluation set and the pitch angle adaptation set, so that the wear pressure of the turbine blades corresponding to the turbine generator speed adaptation requirement is not concentrated on certain fixed wind turbine generators, the wear pressure of the turbine blades corresponding to the turbine generator performance evaluation requirement is also not concentrated on certain fixed wind turbine generators, and each wind turbine generator under the target wind farm has the opportunity to share the turbine generator blade wear pressure of the turbine generator speed adaptation requirement and the turbine generator performance evaluation requirement, thereby effectively reducing the fatigue damage of the turbine generator pitch system and prolonging the service life of the wind turbine generators.
Therefore, the method can execute the step S210 and the step S220, under the condition that the power grid is limited, the wind turbines in the wind power plant are enabled to serve as the pitch angle adapting turbine which meets the turbine wind speed adapting requirement and the performance evaluation turbine which meets the turbine performance evaluation requirement in turn, each wind turbine under the wind power plant is enabled to share the turbine blade abrasion pressure of the turbine wind speed adapting requirement and the turbine performance evaluation requirement, the fatigue damage of a turbine variable pitch system is effectively reduced, and the service life of each wind turbine is prolonged.
Optionally, referring to fig. 3, fig. 3 is a flowchart illustrating sub-steps included in step S220 in fig. 2. In this embodiment, step S220 in fig. 2 may include sub-steps S221 to S223, which ensure that each wind turbine generator set in the target wind farm may participate in the performance evaluation process in turn.
And a substep S221, numbering a plurality of wind turbine generator set sets included in the target wind power plant, and sequencing the respective unit set sequence numbers of the plurality of wind turbine generator sets to obtain a corresponding unit set sequencing result.
In this embodiment, the unit set sorting result may be obtained by directly arranging the unit set serial numbers of the corresponding wind turbine generator sets in an ascending manner, or may be obtained by directly arranging the unit set serial numbers of the corresponding wind turbine generator sets in a descending manner, or may be obtained by arranging the unit set serial numbers of the wind turbine generator sets in a descending/ascending manner according to the number of the units of each wind turbine generator set, and the specific sorting operation may be configured by an operator of the wind farm control terminal 10 according to a requirement.
For example, the unit set numbers of the four wind turbine set sets included in the target wind farm are respectively 1, 2, 3 and 4, the number of the units of the wind turbine set with the unit set serial number 1 is 3, the number of the units of the wind turbine set with the unit set serial number 2 is 4, the number of the units of the wind turbine set with the unit set serial number 3 is 5, the number of the units of the wind turbine set with the unit set serial number 4 is 1, the unit set ordering result may be represented by a unit set number 1, a unit set number 2, a unit set number 3, and a unit set number 4, may also be represented by a unit set number 4, a unit set number 3, a unit set number 2, and a unit set number 1, may also be represented by a unit set number 4, a unit set number 1, a unit set number 2, and a unit set number 3, and may also be represented by a unit set number 3, a unit set number 2, a unit set number 1, and a unit set number 4.
And a substep S222 of selecting a target wind turbine generator set with the matched set number in the plurality of wind turbine generator sets circularly according to the set ordering result corresponding to the plurality of wind turbine generator sets and the preset evaluation interval.
In this embodiment, each wind turbine generator set may individually correspond to a preset evaluation interval when serving as a performance evaluation set, so as to ensure that the wind turbine generator set can perform power generation performance evaluation processing within the corresponding preset evaluation interval, where the preset evaluation intervals of different wind turbine generator sets may be the same or different.
In this embodiment, the respective preset evaluation intervals of the plurality of wind turbine generator sets included in the target wind farm and the number of the wind turbine generator sets corresponding to the wind turbine generator sets are in positive correlation distribution, so that the larger the number of the wind turbine generator sets is, the larger the corresponding preset evaluation intervals are, and thus each wind turbine generator set corresponding to the wind turbine generator set has enough time to perform power generation performance evaluation processing. In an implementation manner of this embodiment, the wind farm control terminal 10 may allocate the same performance evaluation duration for each wind turbine generator in the target wind farm, and configure the number of the wind turbine generator sets in the target wind farm to be the same.
Therefore, after the wind farm control terminal 10 determines the unit set ordering result between the wind turbine sets in the target wind farm, the target wind turbine set with the matched unit set serial number can be selected in each wind turbine set in the target wind farm cyclically according to the unit set ordering result, and the time interval between two selected wind turbine sets is equal to the preset evaluation interval of the wind turbine set selected at the previous time.
For example, the respective unit set numbers of four wind turbine generator sets included in the target wind farm are 1, 2, 3, and 4, and the unit set ordering result among the four wind turbine generator sets is represented by unit set number 1, unit set number 2, unit set number 3, and unit set number 4, wherein the estimated evaluation interval of the wind turbine generator set of unit set number 1 is 2 hours, the estimated evaluation interval of the wind turbine generator set of unit set number 2 is 3 hours, the estimated evaluation interval of the wind turbine generator set of unit set number 3 is 1 hour, the estimated evaluation interval of the wind turbine generator set of unit set number 4 is 3 hours, then the wind turbine generator set of unit set number 2 is selected as the target wind turbine generator set at intervals of 2 hours, and then the wind turbine generator set of unit set number 3 is selected as the target wind turbine generator set at intervals of 3 hours, and then selecting a wind turbine set with a set number of 4 as a target wind turbine set at intervals of 1 hour, re-selecting a wind turbine set with a set number of 1 as a target wind turbine set at intervals of 3 hours, and repeating the multiple wind turbine set selection operations until the wind power plant control terminal 10 determines that the target wind power plant cannot support the power generation performance evaluation operation.
And a substep S223 of taking the target wind generating set selected each time as a performance evaluation set of the target wind power plant for wind power generation.
In this embodiment, after the wind farm control terminal 10 selects a target wind turbine set from each wind turbine set under the target wind farm each time, the target wind turbine set may be directly used as the performance evaluation wind turbine set of the target wind farm, and the remaining wind turbine sets except the target wind turbine set in the target wind farm may be used as the pitch angle adaptation wind turbine set of the target wind farm. Then, the wind farm control terminal 10 sends an instruction for instructing the pitch angle adaption unit set and the performance evaluation unit set of the target wind farm to the central control center of the target wind farm, so that the central control center of the target wind farm correspondingly regulates and controls the operation conditions of the wind turbines under the target wind farm according to the instruction, thereby realizing the power generation performance evaluation operation and the wind speed adaption power generation operation of the turbines.
Therefore, the method and the device can ensure that each wind turbine generator set under the target wind power plant can participate in the performance evaluation process in turn by executing the substeps S221 to S223.
Optionally, referring to fig. 4, fig. 4 is a second flowchart of the wind farm unit regulation and control method provided in the embodiment of the present application. In this embodiment of the application, compared with the wind farm set control method shown in fig. 3, the wind farm set control method shown in fig. 4 may further include step S230, so as to ensure that the target wind farm tends to the active power limit value as much as possible to perform wind power generation under the condition of power grid limit through step S230.
And step S230, under the condition that the active power limit value is smaller than the performance evaluation power threshold value, all wind generator set sets included in the target wind power plant are used as the blade angle adaption set to carry out wind power generation.
In this embodiment, when it is determined that the current active power limit value of the target wind farm is smaller than the performance evaluation power threshold, it may be indicated that the current power generation capability of the target wind farm is not suitable for performing the performance evaluation operation, at this time, the wind farm control terminal 10 sets a plurality of wind turbine generator sets correspondingly included in the target wind farm as a blade angle adaptive generator set, and then, by sending an instruction for instructing the blade angle adaptive generator set and the performance evaluation generator set of the target wind farm to the central control center of the target wind farm, the central control center of the target wind farm correspondingly regulates and controls the operating conditions of the wind turbine generators in the target wind farm according to the instruction, thereby implementing the generator set wind speed adaptive power generation operation.
Therefore, the present application may perform wind power generation as much as possible toward the active power limit value by performing the above step S230 in the case where the current power generation capability of the target wind farm is not suitable for performing the performance evaluation operation.
In the present application, in order to ensure that the wind farm control terminal 10 can execute the wind farm unit regulation and control method through the wind farm unit regulation and control device 100, the wind farm control terminal realizes the functions in a manner of dividing the functional modules of the wind farm unit regulation and control device 100. The specific components of the wind farm unit control device 100 provided by the present application are described correspondingly below.
Referring to fig. 5, fig. 5 is a schematic composition diagram of a wind farm unit control device 100 according to an embodiment of the present application. In the embodiment of the present application, the wind farm unit control device 100 may include a power limit comparing module 110 and a unit alternation evaluating module 120.
And the power limiting power comparison module 110 is configured to obtain a current active power limiting value of the target wind farm, and compare the active power limiting value with a pre-stored performance evaluation power threshold.
The unit alternation evaluation module 120 is configured to, when the active power limit value is greater than or equal to the performance evaluation power threshold value, alternately select one wind turbine set as a performance evaluation unit set from among a plurality of wind turbine sets included in the target wind farm to perform wind power generation, and perform wind power generation by using the remaining wind turbine sets as a pitch angle adaptation unit set, where each wind turbine set includes at least one wind turbine set, each wind turbine set in the performance evaluation unit set performs wind power generation by maintaining an optimal pitch angle thereof, and each wind turbine set in the pitch angle adaptation unit set performs wind power generation by ensuring that the pitch angle thereof adapts to wind speed variation.
Optionally, referring to fig. 6, fig. 6 is a schematic composition diagram of the unit alternation evaluation module 120 in fig. 5. In this embodiment, the unit alternation evaluation module 120 may include a unit set ordering sub-module 121, a unit set rotation sub-module 122, and an evaluation group power generation sub-module 123.
The unit set ordering submodule 121 is configured to number a plurality of wind turbine set sets included in the target wind farm, and order unit set sequence numbers of the plurality of wind turbine set sets to obtain a corresponding unit set ordering result.
And the unit set rotation selection submodule 122 is configured to cyclically select, according to the unit set ordering result corresponding to the plurality of wind turbine set sets, a target wind turbine set with a matched unit set number in the plurality of wind turbine sets according to a preset evaluation interval.
And the evaluation group power generation submodule 123 is configured to use the target wind turbine generator set selected each time as a performance evaluation generator set of the target wind farm to perform wind power generation.
The target wind power plant comprises a plurality of wind power generator sets, wherein the preset evaluation intervals of the wind power generator sets in the target wind power plant are in positive correlation distribution with the number of units of the corresponding wind power generator sets.
Optionally, referring to fig. 7, fig. 7 is a second schematic composition diagram of the wind farm unit control device 100 according to the embodiment of the present application. In the embodiment of the present application, the wind farm unit regulation and control device 100 may further include a pitch angle adaptive power generation module 130.
And the blade angle adaptive power generation module 130 is configured to, when the active power limit value is smaller than the performance evaluation power threshold value, use all wind turbine generator set sets included in the target wind farm as blade angle adaptive generator set sets to perform wind power generation.
It should be noted that the basic principle and the generated technical effect of the wind farm unit regulation and control device 100 provided in the embodiment of the present application are the same as those of the wind farm unit regulation and control method described above. For a brief description, reference may be made to the above description of the wind farm unit regulation method, where this embodiment is not mentioned in part.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part. The functions may be stored in a storage medium if they are implemented in the form of software function modules and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In summary, in the method, the apparatus, the wind farm control terminal, and the storage medium for regulating and controlling the wind farm units provided by the present application, when the current active power limit value of the target wind farm is obtained and the active power limit value is greater than or equal to the performance evaluation power threshold value, one wind turbine set is selected from a plurality of wind turbine sets included in the target wind farm as a performance evaluation set in an alternating manner to perform wind power generation by maintaining an optimal pitch angle, and the remaining wind turbine sets are used as a pitch angle adaptation set to perform wind power generation by ensuring that the pitch angle is adapted to the variation of the wind speed, so that each wind turbine set in the wind farm can alternately serve as a pitch angle adaptation unit meeting the wind speed adaptation requirement of the wind turbine set under the condition of power grid power limitation, and a performance evaluation unit meeting the performance evaluation requirement of the wind turbine set, and each wind turbine set in the wind farm has the opportunity to share the wear pressure of the blades meeting the wind speed adaptation requirement and the performance evaluation requirement of the wind turbine set, therefore, the fatigue damage of a variable pitch system of the wind turbine generator set is effectively reduced, and the service life of the wind turbine generator set is prolonged.
The above description is only for various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes or substitutions are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A wind power plant unit regulation and control method is characterized by comprising the following steps:
the method comprises the steps of obtaining a current active power limit value of a target wind power plant, and comparing the active power limit value with a prestored performance evaluation power threshold value;
and under the condition that the active power limit value is greater than or equal to the performance evaluation power threshold value, alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind power plant as a performance evaluation set to perform wind power generation, and performing wind power generation by using the rest wind turbine sets as a pitch angle adaptation set, wherein each wind turbine set comprises at least one wind turbine set, each wind turbine set under the performance evaluation set performs wind power generation by maintaining the self optimal pitch angle, and each wind turbine set under the pitch angle adaptation set performs wind power generation by ensuring the self pitch angle to adapt to the change of the wind speed.
2. The method according to claim 1, wherein the step of alternately selecting one wind turbine set as a performance evaluation wind turbine set and remaining wind turbine sets as a blade angle adaptation wind turbine set for wind power generation from among the plurality of wind turbine sets included in the target wind farm comprises:
numbering a plurality of wind turbine generator set sets included in the target wind power plant, and sequencing unit set sequence numbers of the wind turbine generator set sets to obtain a corresponding unit set sequencing result;
according to the unit set sequencing results corresponding to the plurality of wind turbine generator set sets, cyclically selecting a target wind turbine generator set with a matched unit set sequence number in the plurality of wind turbine generator sets according to a preset evaluation interval;
and taking the target wind generating set selected each time as a performance evaluation set of the target wind power plant for wind power generation.
3. The method according to claim 2, wherein the preset evaluation interval of each of the plurality of wind turbine generator sets included in the target wind farm is positively correlated with the number of wind turbine generator sets corresponding to the wind turbine generator set.
4. The method according to any one of claims 1-3, further comprising:
and under the condition that the active power limit value is smaller than the performance evaluation power threshold value, all wind generator set sets included in the target wind power plant are used as a blade angle adaptation set to carry out wind power generation.
5. A wind farm unit regulation and control device, characterized in that the device includes:
the power limiting power comparison module is used for obtaining the current active power limiting value of the target wind power plant and comparing the active power limiting value with a prestored performance evaluation power threshold value;
and the unit alternation evaluation module is used for alternately selecting one wind turbine set from a plurality of wind turbine sets included in the target wind power plant as a performance evaluation unit set to perform wind power generation and using the rest wind turbine sets as a pitch angle adaptation unit set to perform wind power generation under the condition that the active power limit value is greater than or equal to the performance evaluation power threshold value, wherein each wind turbine set comprises at least one wind turbine set, each wind turbine set under the performance evaluation unit set performs wind power generation by maintaining the own optimal pitch angle, and each wind turbine set under the pitch angle adaptation unit set performs wind power generation by ensuring the own pitch angle to adapt to the change of the wind speed.
6. The apparatus of claim 5, wherein the crew alternation assessment module comprises:
the unit set sequencing submodule is used for numbering a plurality of wind turbine set sets included in the target wind power plant and sequencing unit set sequence numbers of the wind turbine set sets to obtain a corresponding unit set sequencing result;
the wind turbine generator set rotation selection sub-module is used for circularly selecting a target wind turbine generator set with a matched set number in the plurality of wind turbine generator set sets according to a set sequencing result corresponding to the plurality of wind turbine generator set sets and according to a preset evaluation interval;
and the evaluation group power generation submodule is used for taking the target wind turbine set selected each time as the performance evaluation set of the target wind power plant to carry out wind power generation.
7. The device of claim 6, wherein the preset evaluation interval of each of the plurality of wind turbine generator sets included in the target wind farm is positively correlated with the number of wind turbine generator sets corresponding to the wind turbine generator set.
8. The apparatus of any one of claims 5-7, further comprising:
and the blade angle adaptive power generation module is used for taking all wind turbine generator set sets included in the target wind power plant as blade angle adaptive generator set sets to carry out wind power generation under the condition that the active power limit value is smaller than the performance evaluation power threshold value.
9. A wind farm control terminal, characterized by comprising a processor and a memory, wherein the memory stores a computer program capable of being executed by the processor, and the processor can execute the computer program to realize the wind farm unit regulation and control method according to any one of claims 1 to 4.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the wind farm crew control method of any of claims 1-4.
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