CN113328459A - Primary frequency modulation control method and device for wind power plant - Google Patents
Primary frequency modulation control method and device for wind power plant Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
- H02J3/241—The oscillation concerning frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Engineering & Computer Science (AREA)
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- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention provides a primary frequency modulation control method and device for a wind power plant, wherein the wind power plant comprises a plurality of sets, and the method comprises the following steps: determining whether primary frequency modulation control threads corresponding to each type of unit in the multiple types of units need to be started or not; the method comprises the steps of starting a primary frequency modulation control thread needing to be started, wherein the started primary frequency modulation control thread occupies a corresponding group of hard pressing plates and indicator lamps, wherein the hard pressing plates are used for receiving setting instructions of users for primary frequency modulation related functions, the indicator lamps are used for indicating primary frequency modulation related states, the primary frequency modulation control thread is used for controlling equipment comprising a unit to carry out primary frequency modulation on a grid-connected point, wherein the primary frequency modulation control threads corresponding to different types of units are different, and the primary frequency modulation control threads corresponding to different types of units occupy different groups of hard pressing plates and indicator lamps.
Description
Technical Field
The present disclosure relates generally to the field of wind power technologies, and more particularly, to a primary frequency modulation control method and device for a wind farm.
Background
Fig. 1 shows a schematic diagram of a wind farm station control system according to an exemplary embodiment of the present disclosure, referring to fig. 1, a primary frequency modulation control device, a group of hard pressure plates, a group of indicator lamps, and a measurement and control device for collecting grid-connected point frequency information and action information of the hard pressure plates and sending a control signal to the indicator lamps are arranged in the wind farm station control system, a user can set a primary frequency modulation related function of a wind farm through the group of hard pressure plates, and the user can know a primary frequency modulation state of the wind farm through a state of the indicator lamps.
Disclosure of Invention
An exemplary embodiment of the present disclosure is to provide a primary frequency modulation control method and apparatus of a wind farm, which can effectively use a hard pressing plate and an indicator lamp in the case where the wind farm includes a plurality of types of units.
According to an exemplary embodiment of the disclosure, a primary frequency modulation control method for a wind power plant is provided, wherein the wind power plant comprises a plurality of sets, and the method comprises the following steps: determining whether primary frequency modulation control threads corresponding to each type of unit in the multiple types of units need to be started or not; the method comprises the steps of starting a primary frequency modulation control thread needing to be started, wherein the started primary frequency modulation control thread occupies a corresponding group of hard pressing plates and indicator lamps, wherein the hard pressing plates are used for receiving setting instructions of users for primary frequency modulation related functions, the indicator lamps are used for indicating primary frequency modulation related states, the primary frequency modulation control thread is used for controlling equipment comprising a unit to carry out primary frequency modulation on a grid-connected point, wherein the primary frequency modulation control threads corresponding to different types of units are different, and the primary frequency modulation control threads corresponding to different types of units occupy different groups of hard pressing plates and indicator lamps.
Optionally, wind generating sets produced by the same manufacturer are the same type of set; or the wind generating sets of the same type are the same type of set.
Optionally, each primary frequency modulation control thread corresponding to each type of unit corresponds to each grid-connected point of the wind power plant one to one.
Optionally, when a type of set corresponding to the started primary frequency modulation control thread and other types of sets are connected to the power grid together through a grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard pressure plates and indicator lamps which are arranged in a sequence corresponding to the priority of the type of set; when the type of set corresponding to the started primary frequency modulation control thread is accessed to the power grid through the grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard press plates and indicator lamps corresponding to the priority of the grid-connected point which is ordered and passed.
Optionally, the wind farm comprises a first type of unit and a second type of unit, the wind farm is connected to a power grid through a grid-connected point, a first group of hard pressing plates and indicator lamps and a second group of hard pressing plates and indicator lamps are arranged on a farm control device of the wind farm, and when a started primary frequency modulation control thread is used for controlling the first type of unit to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling the second set to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the second set of hard pressing plates and the indicator lamps, wherein the priority of the first set is higher than that of the second set with respect to the occupation of the hard pressing plates and the indicator lamps.
Optionally, the wind power plant comprises two types of units, the wind power plant is accessed to a power grid through a first grid-connected point and a second grid-connected point, a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps are arranged on a field control device of the wind power plant, when a started primary frequency modulation control thread is used for controlling one type of unit to perform primary frequency modulation on the first grid-connected point, and only one type of unit is accessed to the power grid through the first grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling another type of unit to perform primary frequency modulation on a second grid-connected point and only the other type of unit is connected to a power grid through the second grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressing plates and indicator lamps, and the priority of the first grid-connected point is higher than that of the second grid-connected point with respect to the occupation of the hard pressing plates and the indicator lamps.
Optionally, the step of determining whether each primary frequency modulation control thread corresponding to each type of unit needs to be started includes: determining whether primary frequency modulation support information of a grid-connected point aimed at by each primary frequency modulation control thread meets a preset condition; when a preset condition is met, determining that the primary frequency modulation control thread needs to be started, wherein the primary frequency modulation support information comprises: the number of effective units that this primary frequency modulation control thread can control, the number of the effective AGC equipment that corresponds, whether the website that aims at is effective, preset condition includes: the number of effective units which can be controlled by the primary frequency modulation control thread is greater than 0, the number of corresponding effective AGC devices is greater than 0, and the targeted point of connection is effective.
Optionally, the step of determining whether each primary frequency modulation control thread corresponding to each type of unit needs to be started and starting the primary frequency modulation control thread needing to be started is executed by a primary frequency modulation control application program corresponding to the type of unit, wherein the primary frequency modulation control application program corresponding to each type of unit communicates with the measurement and control device through a full-duplex communication protocol, and the measurement and control device is used for collecting frequency information of each grid-connected point of the wind power plant.
Optionally, the primary frequency modulation control application program corresponding to each type of unit realizes data reading and writing with the measurement and control device in a register mode.
According to another exemplary embodiment of the present disclosure, there is provided a primary frequency modulation control device for a wind farm, the wind farm including multiple sets, the device including: the thread determining unit is used for determining whether the primary frequency modulation control thread corresponding to each type of unit in the plurality of types of units needs to be started or not; the thread starting unit starts a primary frequency modulation control thread needing to be started, wherein the started primary frequency modulation control thread occupies a corresponding group of hard pressing plates and indicator lamps, the hard pressing plates are used for receiving setting instructions of users on primary frequency modulation related functions, the indicator lamps are used for indicating primary frequency modulation related states, the primary frequency modulation control thread is used for controlling equipment comprising the units to carry out primary frequency modulation on a grid-connected point, the primary frequency modulation control threads corresponding to different types of units are different, and the primary frequency modulation control threads corresponding to different types of units occupy different groups of hard pressing plates and indicator lamps.
Optionally, wind generating sets produced by the same manufacturer are the same type of set; or the wind generating sets of the same type are the same type of set.
Optionally, each primary frequency modulation control thread corresponding to each type of unit corresponds to each grid-connected point of the wind power plant one to one.
Optionally, when a type of set corresponding to the started primary frequency modulation control thread and other types of sets are connected to the power grid together through a grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard pressure plates and indicator lamps which are arranged in a sequence corresponding to the priority of the type of set; when the type of set corresponding to the started primary frequency modulation control thread is accessed to the power grid through the grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard press plates and indicator lamps corresponding to the priority of the grid-connected point which is ordered and passed.
Optionally, the wind farm comprises a first type of unit and a second type of unit, the wind farm is connected to a power grid through a grid-connected point, a first group of hard pressing plates and indicator lamps and a second group of hard pressing plates and indicator lamps are arranged on a farm control device of the wind farm, and when a started primary frequency modulation control thread is used for controlling the first type of unit to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling the second set to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the second set of hard pressing plates and the indicator lamps, wherein the priority of the first set is higher than that of the second set with respect to the occupation of the hard pressing plates and the indicator lamps.
Optionally, the wind power plant comprises two types of units, the wind power plant is accessed to a power grid through a first grid-connected point and a second grid-connected point, a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps are arranged on a field control device of the wind power plant, when a started primary frequency modulation control thread is used for controlling one type of unit to perform primary frequency modulation on the first grid-connected point, and only one type of unit is accessed to the power grid through the first grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling another type of unit to perform primary frequency modulation on a second grid-connected point and only the other type of unit is connected to a power grid through the second grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressing plates and indicator lamps, and the priority of the first grid-connected point is higher than that of the second grid-connected point with respect to the occupation of the hard pressing plates and the indicator lamps.
Optionally, the thread determining unit determines whether primary frequency modulation support information of a grid-connected point for each primary frequency modulation control thread meets a preset condition; when a preset condition is met, determining that the primary frequency modulation control thread needs to be started, wherein the primary frequency modulation support information comprises: the number of effective units that this primary frequency modulation control thread can control, the number of the effective AGC equipment that corresponds, whether the website that aims at is effective, preset condition includes: the number of effective units which can be controlled by the primary frequency modulation control thread is greater than 0, the number of corresponding effective AGC devices is greater than 0, and the targeted point of connection is effective.
Optionally, the primary frequency modulation control device further includes: and the communication unit is communicated with the measurement and control equipment through a full-duplex communication protocol, wherein the measurement and control equipment is used for acquiring frequency information of each grid-connected point of the wind power plant.
Optionally, the communication unit realizes data reading and writing with the measurement and control device in a register mode.
According to another exemplary embodiment of the present disclosure, there is provided a computer apparatus including: a processor; and a memory storing a computer program, wherein the computer program, when executed by the processor, implements a primary frequency modulation control method for a wind farm as described above.
According to another exemplary embodiment of the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored which, when being executed by a processor, carries out the method for primary frequency control of a wind farm as described above.
According to the primary frequency modulation control method and device for the wind power plant, the hard pressing plate and the indicator lamp can be effectively used under the condition that the wind power plant comprises a plurality of sets, the method and device can be well compatible with the existing program framework, and the universality and uniformity of the program are conveniently realized; the implementation complexity is low, and the personnel and capital investment are reduced; the version management of the program is convenient, and the management cost is reduced.
Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.
Drawings
The above and other objects and features of the exemplary embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate exemplary embodiments, wherein:
FIG. 1 shows a schematic diagram of a wind farm site control system according to an exemplary embodiment of the present disclosure;
FIG. 2 shows a flow chart of a primary frequency modulation control method of a wind farm according to an exemplary embodiment of the present disclosure;
FIG. 3 illustrates an example of data interaction for a chirp control application in accordance with an exemplary embodiment of the present disclosure;
fig. 4 illustrates an example of a method of starting a chirp control thread according to an example embodiment of the present disclosure;
fig. 5 shows a block diagram of a primary frequency modulation control device of a wind farm according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.
FIG. 2 shows a flow chart of a primary frequency modulation control method of a wind farm according to an exemplary embodiment of the present disclosure. Here, a plurality of types of units (i.e., wind turbine units) are included in the wind farm.
Referring to fig. 2, in step S10, it is determined whether each primary tuning control thread corresponding to each of the plurality of types of units needs to be started.
Here, the primary frequency modulation control thread is used for controlling equipment including a unit to perform primary frequency modulation on a grid-connected point; the primary frequency modulation control threads corresponding to different sets are different. In other words, each type of unit is individually configured with at least one fm control thread for the type of unit, for example, the at least one fm control thread may be controlled by a primary fm control application corresponding to the type of unit. As an example, each primary frequency modulation control thread corresponding to each type of unit corresponds to each grid-connected point of the wind power plant one by one. For example, a wind power plant is provided with N grid-connected points, each type of unit can correspond to N primary frequency modulation control threads, each of the N primary frequency modulation control threads is used for controlling the type of unit to perform primary frequency modulation control on one grid-connected point, and different primary frequency modulation control threads in the N primary frequency modulation control threads are used for performing primary frequency modulation control on different grid-connected points, so that when the wind power plant is provided with a plurality of grid-connected points, splitting is not needed to be performed on a single thread, and multithreading is performed in parallel and independently, so that the execution efficiency is high, and the overall logic is clear.
By way of example, the device including the set may include, in addition to the set, other devices capable of supporting primary frequency modulation for a grid-connected point, and the disclosure is not limited thereto.
As an example, wind generating sets produced by the same manufacturer may be the same type of set; alternatively, the wind generating sets of the same model may be the same type of set. It should be understood that the wind generating sets of the wind farm may be divided into various types by other suitable division manners, which are not limited by the present disclosure.
As an example, it may be determined whether primary frequency modulation support information of a grid-connected point for each primary frequency modulation control thread satisfies a preset condition; when a preset condition is met, determining that the primary frequency modulation control thread needs to be started; and when the preset condition is not met, determining that the primary frequency modulation control thread does not need to be started.
As an example, the primary modulation support information may include: the number of effective units which can be controlled by the primary frequency modulation control thread, the number of corresponding effective AGC devices (active frequency control devices), and whether the targeted grid-connected point is effective or not. As an example, the primary frequency modulation support information may be acquired through a configuration file. And the AGC device corresponding to the primary frequency modulation control thread is the AGC device which has a cooperative control relationship with the frequency modulation control thread.
Accordingly, as an example, the preset condition may include: the number of effective units which can be controlled by the primary frequency modulation control thread is greater than 0, the number of corresponding effective AGC devices is greater than 0, and the targeted point of connection is effective.
In addition, as an example, when each primary frequency modulation control thread corresponding to any type of unit does not need to be started, a default thread in the pre-designated primary frequency modulation control threads corresponding to the type of unit is started.
In step S20, a primary chirp control thread to be started is started, wherein the started primary chirp control thread occupies a corresponding set of hard platens and indicator lights. And primary frequency modulation control threads corresponding to different sets occupy different sets of hard press plates and indicator lamps.
It should be understood that a set of hard platens and indicator lights may include at least one hard platen and at least one indicator light. The hard pressure plate is used for receiving a setting instruction of a user on a primary frequency modulation related function, in other words, the user can start or close the primary frequency modulation related function corresponding to the primary frequency modulation control thread corresponding to the hard pressure plate by operating the hard pressure plate. As an example, the primary frequency modulation related function may include, but is not limited to, at least one of: primary frequency modulation function, inertia function and error reporting function.
The lighting state and the extinguishing state of the indicator light are used for indicating the related state of the primary frequency modulation, in other words, a user can timely know the related state of the primary frequency modulation corresponding to the primary frequency modulation control thread corresponding to the indicator light through the indicator light. As an example, the primary tune-related status may include, but is not limited to, at least one of: whether the primary frequency modulation is normal or not.
And the primary frequency modulation control thread is used for controlling equipment including the unit to perform primary frequency modulation on one grid-connected point. Specifically, in response to a setting instruction of a user on a primary frequency modulation related function received through an occupied hard pressing plate, primary frequency modulation control is performed on equipment which can be controlled by the equipment and comprises a unit based on frequency information of a grid-connected point; and controlling the state of the occupied indicator light based on the current primary frequency modulation state.
The primary frequency modulation control application program is realized in a multithreading mode, considering that some electric fields are two or more grid-connected points, the power grid examination is respectively examined according to the grid-connected points, when a single thread is adopted, no problem exists when a single grid-connected point is met, when two grid-connected points are met, the single thread is relatively troublesome to split, the control efficiency is low, and the multithreading (for example, two threads) are respectively independently and parallelly executed, so that the program logic is clear, and the execution efficiency is high, therefore, the method is adopted. However, the present disclosure contemplates that multiple types of units may be included within a wind farm, for example, to avoid the following problems: when the wind power plant comprises a plurality of sets, for example, a first set and a second set, the two sets are produced by different manufacturers, the two sets are uniformly controlled by the wind power plant station control system to operate, but the wind power plant station control system is only provided with two sets of hard pressing plates and indicator lamps aiming at the primary frequency modulation function, and no matter whether the two sets are connected into a power grid through the same grid-connected point, the two sets of hard pressing plates and the indicator lamps can conflict when being used. The default initialization of the primary fm control application may determine some necessary information such as: the number of the effective units, the effective AGC equipment and the effective grid-connected points can give information prompts when all the requirements are met, as long as one group of data simultaneously meets the three conditions of the effective units, the effective AGC equipment and the effective grid-connected points, a primary frequency modulation control application program process can be started, two threads are started by default in the process, two grid-connected points are defaulted by default, when a certain grid-connected point does not meet the requirements, a main switch is closed, the functions cannot be put into use, when a set value of a certain site does not meet the requirements, corresponding some fault indicating lamps can be lightened, the operation of closing the switch and lightening the fault indicating lamps is that the two grid-connected point threads are judged to be effective in respective threads after being started, for example, the second thread does not put into a main outlet, and therefore the second thread can turn off the indicating lamps. The real effect is that two threads of a control program (primary frequency modulation control application program of the first type of unit) occupy two groups of indicator lamps. When a second control application (a second class of set primary control applications) wants to use a second set of indicator lights, a two-program overhead phenomenon occurs.
Accordingly, the present disclosure proposes: can set up multiunit hard clamp plate and pilot lamp to the primary frequency modulation function of wind-powered electricity generation field to guarantee that the primary frequency modulation control thread that different types of units correspond occupies the hard clamp plate and the pilot lamp of different groups, promptly, different types of units use hard clamp plate and the pilot lamp of different groups to the primary frequency modulation function. As an example, the total group number of the hard pressing plates and the indicator lamps may be determined based on the total number of the grid-connected points of the wind farm and the total group number of different groups in the wind farm, wherein the total group number of the hard pressing plates and the indicator lamps is positively correlated with the total number of the grid-connected points of the wind farm; the total number of the hard pressing plates and the indicating lamps is positively correlated with the total number of different types of units in the wind power plant.
As an example, steps S10 and S20 may be performed by a primary control application. As an example, each type of unit may correspond to a respective primary frequency modulation control application program, and specifically, for each type of unit, a primary frequency modulation control application program corresponding to the unit may be configured, where the primary frequency modulation control application program may be used to communicate with a communication layer, and determine which of the configured primary frequency modulation control threads need to be started and started, that is, determine whether each primary frequency modulation control thread corresponding to the type of unit needs to be started, and the step of starting the primary frequency modulation control thread that needs to be started may be executed by the primary frequency modulation control application program corresponding to the type of unit.
Fig. 3 illustrates an example of data interaction of a chirp control application according to an exemplary embodiment of the present disclosure. Here, the wind farm includes two types of units, namely a first type of unit and a second type of unit. As shown in fig. 3, the primary frequency modulation control device in the field control device of the wind farm includes two layers: the control layer is communicated with the first type unit, the second type unit, AGC equipment (or an energy management platform EMP) corresponding to the first type unit, AGC equipment (or an energy management platform EMP) corresponding to the second type unit, measurement and control equipment and the like through the control communication layer, and the tasks of data reading and command writing are completed. There is an internal data interaction between the control layer and the communication layer in the form: the control layer obtains raw data analyzed and processed by the communication layer and sends the calculated engineering quantity control command to the communication layer, so that the processing of one scheduling period is completed. As an example, there is no data interaction between the primary fm control application of the first type of unit and the primary fm control application of the second type of unit.
The method may be performed by a primary control device in a wind farm plant control system, for example, and steps S10 and S20 may be performed upon initialization of the primary control device, for example.
It should be understood that which set of hard platen and indicator light is specifically occupied by the activated primary fm control thread may be determined by the primary fm control thread, for example, the activated primary fm control thread may execute a specific judgment policy to determine the occupied hard platen and indicator light, or the activated primary fm control thread may be configured after executing a specific judgment policy by the corresponding primary fm control application program, so that the primary fm control thread determines the occupied hard platen and indicator light according to the configuration information, and further, the activated primary fm control thread may also cyclically execute a specific primary fm control policy. Specific examples of the judgment policy will be described in the following embodiments.
As an example, when a type of set corresponding to a started primary frequency modulation control thread and other types of sets are connected to a power grid together through a grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard pressure plates and indicator lights which are ordered and correspond to the priority of the type of set; when one type of set corresponding to the started primary frequency modulation control thread is accessed to the power grid through the grid-connected point to which the primary frequency modulation control thread is directed alone (i.e., not together with other types of sets), the primary frequency modulation control thread occupies a group of hard pressure plates and indicator lamps with the sequence corresponding to the priority of the passed grid-connected point. Specifically, each group of the hard pressing plates and the indicator lamps has their ordering, for example, each group of the hard pressing plates and the indicator lamps can be ordered according to the actual arrangement position of each group of the hard pressing plates and the indicator lamps, for example, each group can be ordered according to the actual arrangement position from top to bottom, and the higher the priority is, the higher the ordering of the hard pressing plates and the indicator lamps corresponding to each group is.
Taking the wind power plant comprising a first type unit and a second type unit, the wind power plant being connected to a power grid through a grid-connected point, and a field control device of the wind power plant being provided with a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps as an example, when a started primary frequency modulation control thread is used for controlling the first type unit to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling the second set to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the second set of hard pressing plates and the indicator lamps, wherein the priority of the first set is higher than that of the second set with respect to the occupation of the hard pressing plates and the indicator lamps.
Taking the wind power plant comprising two types of units, the wind power plant being accessed to a power grid through a first grid-connected point and a second grid-connected point, a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps being arranged on a field control device of the wind power plant as an example, when a started primary frequency modulation control thread is used for controlling one type of unit to perform primary frequency modulation on the first grid-connected point, and only one type of unit is accessed to the power grid through the first grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling another type of unit to perform primary frequency modulation on a second grid-connected point and only the other type of unit is connected to a power grid through the second grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressing plates and indicator lamps, wherein the priority of the first grid-connected point is higher than that of the second grid-connected point with respect to the occupation of the hard pressing plates and the indicator lamps.
As an example, the primary frequency modulation control application program corresponding to each type of unit may communicate with a measurement and control device through a full-duplex communication protocol, where the measurement and control device is configured to collect frequency information of each grid-connected point of a wind farm. In addition, the measurement and control equipment can also be used for collecting the action information of the hard pressing plate, receiving the instruction for controlling the indicator lamp and controlling the indicator lamp to be turned on or turned off. According to the method and the device, when the wind power plant comprises multiple sets, the data reading efficiency of multiple primary frequency modulation control application programs corresponding to the multiple sets when the multiple primary frequency modulation control application programs are communicated with the measurement and control equipment through the communication layer can be avoided.
As an example, the primary frequency modulation control application program corresponding to each type of unit realizes data reading and writing with the measurement and control device in a register mode, instead of using a coefficient processing mode when reading and writing data, so that the data reading and writing efficiency is improved. Specifically, when the data type of the data to be written is digital quantity rather than analog quantity, the byte with the median value of 0 in the data to be written is directly filled to 00, the byte with the median value of 1 is filled to FF00, and the processed data to be written is written into a command message structure body to be sent; when the data type of the data to be read is a digital quantity rather than an analog quantity, the data can be fetched bitwise as follows: and taking the coefficient bits in the transmitted structure body attributes as the bits required for shifting, shifting the transmitted data values by the bits, and then obtaining the data quantity data of the data values after 0-01.
Fig. 4 illustrates an example of a method of starting a chirp control thread according to an exemplary embodiment of the present disclosure. The method can be executed by a primary frequency modulation control application program of one type of unit, the primary frequency modulation control application program manages two primary frequency modulation control threads (hereinafter, also referred to as thread 1 and thread 2), and each thread corresponds to a grid-connected point.
Referring to fig. 4, in step S101, all data is acquired for two standby primary fm control threads. Specifically, all raw data is read from the communication layer for two threads respectively, and subsequent control model data is generated by a raw data model. Since the two chirp control threads are not determining which needs to be started for a while, they are referred to herein as standby threads.
In step S102, frequency initialization is performed. As an example, a typical curve perturbation test simulation frequency data set can be obtained according to a designed low-frequency typical curve data file and an over-frequency typical curve data file, and data is reserved for the actual test execution situation.
In step S103, the board computer and the unit corresponding to the board computer are determined. The sampling machine sets are required to be uncontrollable for scheduling, different sets are required to be executed according to the power trend of the sampling machine, and therefore the sampling machine sets are judged to be the sampling machine sets, and the sampling machine sets are executed according to the trend of the sampling machine sets.
In step S104, all handles are acquired. The handle is the link between the control model of the chirp control application and the raw data model.
In step S105, the point-of-connection setting information is checked. As an example, according to the configured names of the designed grid-connected points 1 and 2, the serial numbers of the transformers of the two grid-connected points are respectively obtained, and whether the serial numbers of the two transformers are the same or invalid is determined, and when the serial numbers of the transformers are correct, the serial numbers of the transformers are respectively set in the serial number variables of the grid-connected points of the two primary frequency modulation control threads.
In step S106, effective unit information and effective AGC device information are acquired. If the data is valid, the control model data required in the control is represented, and the corresponding raw data model data can be obtained. The unit specifies the necessary variables in primary frequency modulation control, and corresponding handles can be found from the variable names, so that the unit is effective; the AGC device defines the variables necessary for primary control, and if the corresponding handle can be found from the variable names, the AGC device indicates validity.
In step S107, the total rated power of the unit associated with each thread is calculated. Each unit is marked with the serial number of the transformer under which the unit is mounted, and the relation between the line program number and the serial number of the transformer can be obtained according to the serial number of the transformer, namely, the unit can correspond to the line program number, and the maximum power sum of all units under each thread is the thread rated power.
In step S108, a thread start condition is determined.
Specifically, in step S201, when it is determined that the number of effective AGC devices is not 0 and the grid-connected point is correct according to the fact that the number of effective units in the thread 1 structure is not 0, it is determined that the thread 1 is effective, and in step S202, the start condition G _ th1 of the thread 1 is set to 1; in step S203, when it is determined that the number of effective units in the structural body is not 0, the number of effective AGC devices is not 0, and the point of connection is correct according to the thread 2, it is determined that the thread 2 is effective; in step S204, the start condition G _ th2 for thread 2 is set to 1; in step S205, when it is determined that both thread 1 and thread 2 are invalid, G _ th1 is set to 1 implicitly.
In step S109, a thread is created. As an example, a thread may be created by a thread start determination flag and a thread number after the thread start.
Specifically, in step S301, when G _ th1 is 1, thread 1 is created; in step S302, when G _ th2 is 1, thread 2 is created.
Fig. 5 shows a block diagram of a primary frequency modulation control device of a wind farm according to an exemplary embodiment of the present disclosure. The wind power plant comprises multiple types of units.
As shown in fig. 5, a primary frequency modulation control apparatus according to an exemplary embodiment of the present disclosure includes: a thread determining unit 10 and a thread initiating unit 20.
Specifically, the thread determining unit 10 is configured to determine whether a primary fm control thread corresponding to each of the multiple classes of units needs to be started.
The thread starting unit 20 is used for starting the primary frequency modulation control thread needing to be started.
The starting primary frequency modulation control thread occupies a corresponding group of hard pressing plates and indicator lamps, wherein the hard pressing plates are used for receiving setting instructions of users for primary frequency modulation related functions, the indicator lamps are used for indicating primary frequency modulation related states, the primary frequency modulation control thread is used for controlling equipment including the units to perform primary frequency modulation on a grid-connected point, the primary frequency modulation control threads corresponding to different types of the units are different, and the primary frequency modulation control threads corresponding to different types of the units occupy different groups of hard pressing plates and indicator lamps.
As an example, wind generating sets produced by the same manufacturer may be the same type of set; alternatively, the wind generating sets of the same model may be the same type of set.
As an example, each primary frequency modulation control thread corresponding to each type of unit may correspond to each grid-connected point of the wind farm one to one.
As an example, when a type of set corresponding to a started primary frequency modulation control thread and other types of sets are connected to a power grid together through a grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard pressure plates and indicator lights which are ordered and correspond to the priority of the type of set; when the type of set corresponding to the started primary frequency modulation control thread is accessed to the power grid through the grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard press plates and indicator lamps corresponding to the priority of the grid-connected point which is ordered and passed.
As an example, the wind farm comprises a first type of unit and a second type of unit, the wind farm is connected to a power grid through a grid-connected point, a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps are arranged on a field control device of the wind farm, and when a started primary frequency modulation control thread is used for controlling the first type of unit to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling the second set to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the second set of hard pressing plates and the indicator lamps, wherein the priority of the first set is higher than that of the second set with respect to the occupation of the hard pressing plates and the indicator lamps.
As an example, the wind power plant comprises two types of units, the wind power plant is accessed to a power grid through a first grid-connected point and a second grid-connected point, a first group of hard pressing plates and indicator lamps, and a second group of hard pressing plates and indicator lamps are arranged on a field control device of the wind power plant, and when a started primary frequency modulation control thread is used for controlling one type of unit to perform primary frequency modulation on the first grid-connected point and only one type of unit is accessed to the power grid through the first grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and indicator lamps; when the started primary frequency modulation control thread is used for controlling another type of unit to perform primary frequency modulation on a second grid-connected point and only the other type of unit is connected to a power grid through the second grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressing plates and indicator lamps, and the priority of the first grid-connected point is higher than that of the second grid-connected point with respect to the occupation of the hard pressing plates and the indicator lamps.
As an example, the thread determining unit 10 may determine whether primary frequency modulation support information of a grid-connected point for each primary frequency modulation control thread satisfies a preset condition; and when the preset condition is met, determining that the primary frequency modulation control thread needs to be started.
As an example, the primary modulation support information may include: the number of effective units which can be controlled by the primary frequency modulation control thread, the number of corresponding effective AGC devices and whether the targeted grid-connected point is effective or not.
As an example, the preset condition may include: the number of effective units which can be controlled by the primary frequency modulation control thread is greater than 0, the number of corresponding effective AGC devices is greater than 0, and the targeted point of connection is effective.
As an example, the primary frequency modulation control apparatus according to an exemplary embodiment of the present disclosure may further include: the system comprises a communication unit (not shown) which is used for communicating with a measurement and control device through a full-duplex communication protocol, wherein the measurement and control device is used for collecting frequency information of each grid-connected point of the wind power plant.
As an example, the communication unit may implement data reading and writing with the measurement and control device in a register manner.
It should be understood that the specific processes performed by the primary frequency modulation control device according to the exemplary embodiment of the present disclosure have been described in detail with reference to fig. 1 to 4, and the details thereof will not be described herein.
It should be understood that the respective units in the chirp control device according to the exemplary embodiments of the present disclosure may be implemented as hardware components and/or software components. The individual units may be implemented, for example, using Field Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), depending on the processing performed by the individual units as defined by the skilled person.
Exemplary embodiments of the present disclosure provide a computer-readable storage medium storing a computer program which, when executed by a processor, implements the primary frequency modulation control method of a wind farm as described in the above exemplary embodiments. The computer readable storage medium is any data storage device that can store data which can be read by a computer system. Examples of computer-readable storage media include: read-only memory, random access memory, read-only optical disks, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission through the internet via wired or wireless transmission paths).
The computer device according to an exemplary embodiment of the present disclosure includes: a processor (not shown) and a memory (not shown), wherein the memory stores a computer program which, when executed by the processor, implements the primary frequency control method of a wind farm as described in the above exemplary embodiments.
Although a few exemplary embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
Claims (12)
1. A primary frequency modulation control method for a wind power plant is characterized in that the wind power plant comprises a plurality of sets, and the method comprises the following steps:
determining whether primary frequency modulation control threads corresponding to each type of unit in the multiple types of units need to be started or not;
starting a primary frequency modulation control thread needing to be started,
wherein, the started primary frequency modulation control thread occupies a corresponding group of hard pressure plates and indicator lamps,
wherein the hard pressure plate is used for receiving a setting instruction of a user on a primary frequency modulation related function, the indicator light is used for indicating a primary frequency modulation related state, the primary frequency modulation control thread is used for controlling equipment including a unit to perform primary frequency modulation on a grid-connected point,
the primary frequency modulation control threads corresponding to different sets are different, and the primary frequency modulation control threads corresponding to different sets occupy different sets of hard pressing plates and indicator lamps.
2. The method of claim 1, wherein wind turbine generators manufactured by the same manufacturer are of the same type; or the wind generating sets of the same type are the same type of set.
3. The method according to claim 1, wherein the primary frequency modulation control threads corresponding to each type of unit correspond to grid-connected points of a wind power plant one by one.
4. The method of claim 3,
when one type of set corresponding to the started primary frequency modulation control thread and other types of sets are accessed to a power grid together through a grid-connected point aimed at by the primary frequency modulation control thread, the primary frequency modulation control thread occupies a group of hard press plates and indicator lamps which are arranged in a sequence corresponding to the priority of the set;
when the type of set corresponding to the started primary frequency modulation control thread is accessed to the power grid through the grid-connected point to which the primary frequency modulation control thread is directed, the primary frequency modulation control thread occupies a group of hard press plates and indicator lamps corresponding to the priority of the grid-connected point which is ordered and passed.
5. The method according to claim 4, characterized in that the wind farm comprises a first group and a second group, the wind farm is connected to the power grid through a grid-connected point, a first group of hard pressure plates and indicator lamps and a second group of hard pressure plates and indicator lamps are arranged on a field control device of the wind farm,
when the started primary frequency modulation control thread is used for controlling the first type of unit to perform primary frequency modulation on the grid-connected point, the primary frequency modulation control thread occupies the first group of hard pressing plates and the indicator lamp;
when the started primary frequency modulation control thread is used for controlling the second type unit to carry out primary frequency modulation aiming at the grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressing plates and indicator lamps,
wherein the first type of unit has a higher priority than the second type of unit with respect to occupying the hard press plate and the indicator light.
6. The method according to claim 4, characterized in that the wind farm comprises two types of units, the wind farm is connected to the power grid through a first grid-connected point and a second grid-connected point, a first group of hard pressure plates and indicator lamps and a second group of hard pressure plates and indicator lamps are arranged on a field control device of the wind farm,
when the started primary frequency modulation control thread is used for controlling one type of unit to perform primary frequency modulation on a first grid-connected point and only one type of unit is connected to a power grid through the first grid-connected point, the primary frequency modulation control thread occupies a first group of hard pressing plates and indicator lamps;
when the started primary frequency modulation control thread is used for controlling another type of unit to carry out primary frequency modulation aiming at a second grid-connected point and only the other type of unit is connected to a power grid through the second grid-connected point, the primary frequency modulation control thread occupies a second group of hard pressure plates and indicator lamps,
the first point-of-grid has a higher priority than the second point-of-grid with respect to occupying the hard platen and the indicator light.
7. The method of claim 3, wherein determining whether each primary fm control thread corresponding to each class of crew requires startup comprises:
determining whether primary frequency modulation support information of a grid-connected point aimed at by each primary frequency modulation control thread meets a preset condition;
when the preset condition is met, determining that the primary frequency modulation control thread needs to be started,
wherein the primary frequency modulation support information includes: the number of effective machine sets which can be controlled by the primary frequency modulation control thread, the number of corresponding effective AGC devices and whether the targeted grid-connected point is effective or not,
the preset conditions include: the number of effective units which can be controlled by the primary frequency modulation control thread is greater than 0, the number of corresponding effective AGC devices is greater than 0, and the targeted point of connection is effective.
8. The method of claim 1, wherein the step of determining whether each primary FM control thread corresponding to each type of unit needs to be started and starting the primary FM control thread that needs to be started is performed by a primary FM control application corresponding to the type of unit,
wherein, the primary frequency modulation control application program corresponding to each type of unit communicates with the measurement and control equipment through a full duplex communication protocol,
the measurement and control equipment is used for collecting frequency information of each grid-connected point of the wind power plant.
9. The method according to claim 8, wherein the primary frequency modulation control application program corresponding to each type of unit realizes data reading and writing with the measurement and control equipment in a register mode.
10. The primary frequency modulation control equipment of the wind power plant is characterized in that the wind power plant comprises a plurality of sets, and the equipment comprises:
the thread determining unit is used for determining whether the primary frequency modulation control thread corresponding to each type of unit in the plurality of types of units needs to be started or not;
a thread starting unit for starting the primary frequency modulation control thread to be started,
wherein, the started primary frequency modulation control thread occupies a corresponding group of hard pressure plates and indicator lamps,
wherein the hard pressure plate is used for receiving a setting instruction of a user on a primary frequency modulation related function, the indicator light is used for indicating a primary frequency modulation related state, the primary frequency modulation control thread is used for controlling equipment including a unit to perform primary frequency modulation on a grid-connected point,
the primary frequency modulation control threads corresponding to different sets are different, and the primary frequency modulation control threads corresponding to different sets occupy different sets of hard pressing plates and indicator lamps.
11. A computer device, characterized in that the computer device comprises:
a processor; and
a memory in which the computer program is stored,
wherein the computer program, when being executed by a processor, implements a primary frequency control method of a wind farm according to any of the claims 1 to 9.
12. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out a method for primary frequency control of a wind farm according to any one of claims 1 to 9.
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| CN202110349663.4A CN113328459A (en) | 2021-03-31 | 2021-03-31 | Primary frequency modulation control method and device for wind power plant |
| PCT/CN2021/119547 WO2022205800A1 (en) | 2021-03-31 | 2021-09-22 | Primary frequency modulation control method and control device for wind farm |
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| WO2022205800A1 (en) * | 2021-03-31 | 2022-10-06 | 新疆金风科技股份有限公司 | Primary frequency modulation control method and control device for wind farm |
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| CN104184171B (en) * | 2014-08-13 | 2017-03-08 | 上海电机学院 | A kind of wind energy turbine set layer active power controller system and method |
| CN106532739B (en) * | 2016-09-30 | 2018-07-03 | 哈尔滨工业大学 | Wind turbines frequency-division section participates in electric system primary frequency modulation method |
| CN107749644B (en) * | 2017-11-29 | 2021-02-26 | 国电联合动力技术有限公司 | Intelligent control method and system for wind power plant participating in primary frequency modulation |
| CN108199417B (en) * | 2017-12-27 | 2021-06-18 | 国电南瑞科技股份有限公司 | Wind power plant participation system coordination method with differentiated real-time frequency modulation capability of fans |
| CN110098622B (en) * | 2018-01-31 | 2021-04-13 | 北京金风科创风电设备有限公司 | Primary frequency modulation method and device for wind turbine generator |
| CN113328459A (en) * | 2021-03-31 | 2021-08-31 | 新疆金风科技股份有限公司 | Primary frequency modulation control method and device for wind power plant |
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