CN115793429A - Time division multiplexing control method and system for wind power plant unit - Google Patents
Time division multiplexing control method and system for wind power plant unit Download PDFInfo
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Abstract
The application provides a time division multiplexing control method and a time division multiplexing control system for a wind power plant unit, wherein the method comprises the following steps: acquiring a preset time interval of unit control instructions in the wind power plant, the total number of units in the wind power plant and a signal transmission distance between each unit and a master control system; determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system; correcting the initial communication time length of each unit in the wind power plant according to a preset time interval to obtain the corrected communication time length of each unit; and controlling each unit in the wind power plant by using the master control system based on the corrected communication time length of each unit. The technical scheme that this application provided, solve and too rely on the condition of each unit master control system in the traditional wind power station control system, and then reduced interlocking fault response, also reduced the whole cost and the maintenance cost of unit and wind farm simultaneously.
Description
Technical Field
The application relates to the field of unit control, in particular to a time division multiplexing control method and system for a wind power plant unit.
Background
Each wind power unit in the wind power station is controlled by an independent main control system, and each main control system can determine the current unit control strategy according to the current running state of the unit, so that the control of the whole unit is completed, and the main control systems of all the station units form a control system of the station unit.
Under the existing technical scheme, each unit is controlled by a respective master controller, and each master controller needs to receive a station level overall control instruction of a wind power station, so that a pyramid control system is formed. However, the pyramid control system is extremely dependent on the master control operation health degree of each wind turbine, and once a master control system of one wind turbine fails, the whole wind turbine can be quitted from operation, and even cascading failure reactions are caused to other wind turbines in a station.
Disclosure of Invention
The application provides a time division multiplexing control method and a time division multiplexing control system for a wind power plant unit, which are used for at least solving the technical problem that a pyramid control system of a wind power plant causes cascading failure reaction when one master control system fails.
An embodiment of a first aspect of the present application provides a time division multiplexing control method for a wind farm unit, where the method includes:
acquiring a preset time interval of unit control instructions in a wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and a master control system;
determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system;
correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit;
controlling each unit in the wind power plant by using a master control system based on the corrected communication time length of each unit;
the wind power plant comprises a main control system and N units.
Preferably, the calculation formula of the initial communication time length of each unit in the wind farm is as follows:
in the formula, t i The method comprises the steps of setting an initial communication time length of an ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of units in the wind power plant, setting di to be a signal transmission distance between the ith unit and a main control system, and setting dj to be a signal transmission distance between the jth unit and the main control system.
Preferably, the modifying the initial communication time length of each unit in the wind farm according to the preset time interval to obtain the modified communication time length of each unit includes:
acquiring the sum of the initial communication time lengths of all units in the wind power plant;
when the sum of the initial communication time lengths of all the units in the wind power plant is smaller than or equal to the preset time interval, taking the initial communication time length of each unit as the corrected communication time length of each unit;
when the sum of the initial communication time lengths of all the units in the wind power plant is larger than the preset time interval, obtaining the proportion of the preset time interval in the sum of the initial communication time lengths of all the units, and correcting the initial communication time lengths of all the units based on the proportion to obtain the corrected communication time lengths of all the units.
Further, the calculation formula of the communication time length of each corrected unit is as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
An embodiment of a second aspect of the present application provides a time division multiplexing control system for a wind farm unit, where the system includes:
the acquisition module is used for acquiring a preset time interval of unit control instructions in the wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and the master control system;
the determining module is used for determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the main control system;
the correction module is used for correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit;
the control module is used for controlling each unit in the wind power plant by using the master control system based on the corrected communication time length of each unit;
the wind power plant comprises a main control system and N units.
Preferably, the calculation formula of the initial communication time length of each unit in the wind farm is as follows:
in the formula, t i The method comprises the steps of setting an initial communication time length of an ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of units in the wind power plant, setting di to be a signal transmission distance between the ith unit and a main control system, and setting dj to be a signal transmission distance between the jth unit and the main control system.
Preferably, the modification module includes:
the acquiring unit is used for acquiring the sum of the initial communication time lengths of all the units in the wind power plant;
the correction unit is used for taking the initial communication time length of each unit as the corrected communication time length of each unit when the sum of the initial communication time lengths of the units in the wind power plant is smaller than or equal to the preset time interval; when the sum of the initial communication time lengths of all the units in the wind power plant is larger than the preset time interval, obtaining the proportion of the preset time interval in the sum of the initial communication time lengths of all the units, and correcting the initial communication time lengths of all the units based on the proportion to obtain the corrected communication time lengths of all the units.
Further, the calculation formula of the communication time length of each corrected unit is as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
An embodiment of a third aspect of the present application provides an electronic device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as described in the embodiments of the first aspect when executing the program.
An embodiment of a fourth aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method according to the embodiment of the first aspect.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
the application provides a time division multiplexing control method and a time division multiplexing control system for a wind power plant unit, wherein the method comprises the following steps: acquiring a preset time interval of unit control instructions in the wind power plant, the total number of units in the wind power plant and a signal transmission distance between each unit and a master control system; determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system; correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit; controlling each unit in the wind power plant by using a master control system based on the corrected communication time length of each unit; the wind power plant comprises a main control system and N units. The technical scheme that this application provided, solve and too rely on the condition of each unit master control system in the traditional wind power station control system, and then reduced interlocking fault response, also reduced the whole cost and the maintenance cost of unit and wind farm simultaneously.
Additional aspects and advantages of the present application 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 present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a time division multiplexing control method for a wind farm unit according to an embodiment of the present application;
FIG. 2 is a structural diagram of a time division multiplexing control system of a wind farm unit according to an embodiment of the present application;
fig. 3 is a block diagram of a modification module provided according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
The application provides a time division multiplexing control method and a time division multiplexing control system for a wind power plant unit, wherein the method comprises the following steps: acquiring a preset time interval of unit control instructions in a wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and a master control system; determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system; correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit; controlling each unit in the wind power plant by using a master control system based on the corrected communication time length of each unit; the wind power plant comprises a main control system and N units. The technical scheme who this application provided, the condition of too relying on each unit major control system in solving traditional wind power station control system, and then reduced interlocking fault reaction, also reduced the whole cost and the maintenance cost of unit and wind power station simultaneously.
The time division multiplexing control method and system for the wind power plant unit according to the embodiment of the present application are described below with reference to the accompanying drawings.
Example one
Fig. 1 is a flowchart of a time division multiplexing control method for a wind farm unit according to an embodiment of the present application, and as shown in fig. 1, the method includes:
step 1: acquiring a preset time interval of unit control instructions in a wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and a master control system; the wind power plant comprises a main control system and N units.
It should be noted that the time division multiplexing control method for the units refers to a method for controlling all units of the whole wind farm by using a master control system of only one wind power generation unit, adopting a time fragmentation mode and using a communication network of the wind farm.
Step 2: determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system;
in the embodiment of the present disclosure, the calculation formula of the initial communication time length of each unit in the wind farm is as follows:
in the formula, t i The method comprises the steps of setting an initial communication time length of an ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of units in the wind power plant, setting di to be a signal transmission distance between the ith unit and a main control system, and setting dj to be a signal transmission distance between the jth unit and the main control system.
And step 3: correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit;
in an embodiment of the present disclosure, the step 3 specifically includes:
acquiring the sum of the initial communication time lengths of all units in the wind power plant;
when the sum of the initial communication time lengths of all the units in the wind power plant is smaller than or equal to the preset time interval, taking the initial communication time length of each unit as the corrected communication time length of each unit;
when the sum of the initial communication time lengths of the units in the wind power plant is larger than the preset time interval, acquiring the proportion of the preset time interval in the sum of the initial communication time lengths of the units, and correcting the initial communication time lengths of the units based on the proportion to obtain the corrected communication time lengths of the units.
The calculation formula of the communication time length of each corrected unit is as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
And 4, step 4: and controlling each unit in the wind power plant by using a master control system based on the corrected communication time length of each unit.
For example, when the master control system controls the unit, the master control system is used for mutually transmitting information and controlling with the unit No. 1 from the time 0 to the time t 1; the time from t1 to t1+ t2 is used for mutually transmitting information and controlling with the number 2 unit; and so on; and the time from the time of t1+. T N-1 to the time of t1+. T + tN is used for mutually transmitting information and controlling with the No. N unit. Therefore, time division multiplexing control over the wind power plant set is achieved.
In summary, in the time division multiplexing control method for the wind farm units provided in this embodiment, only one master control system is used to perform time division multiplexing control on all units in the wind farm, so that the problem that each unit master control system is excessively depended on in the traditional wind farm control system is solved, and the overall manufacturing cost and maintenance cost of the units and the wind farm are reduced.
Example two
Fig. 2 is a structural diagram of a time division multiplexing control system of a wind farm unit according to an embodiment of the present application, and as shown in fig. 2, the system includes:
the acquiring module 100 is used for acquiring a preset time interval of unit control instructions in the wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and the master control system;
the determining module 200 is used for determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system;
the correcting module 300 is configured to correct the initial communication time length of each unit in the wind farm according to the preset time interval, so as to obtain a corrected communication time length of each unit;
a control module 400, configured to control each unit in the wind farm by using a master control system based on the corrected communication time length of each unit;
the wind power plant comprises a main control system and N units.
In the embodiment of the present disclosure, the calculation formula of the initial communication time length of each unit in the wind farm is as follows:
in the formula, t i The method comprises the steps of setting an initial communication time length of an ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of units in the wind power plant, setting di to be a signal transmission distance between the ith unit and a main control system, and setting dj to be a signal transmission distance between the jth unit and the main control system.
In the embodiment of the present disclosure, as shown in fig. 3, the modification module 300 includes:
an obtaining unit 301, configured to obtain a sum of initial communication time lengths of units in a wind farm;
a correcting unit 302, configured to, when a sum of initial communication time lengths of each unit in the wind farm is less than or equal to the preset time interval, use the initial communication time length of each unit as a corrected communication time length of each unit; when the sum of the initial communication time lengths of the units in the wind power plant is larger than the preset time interval, acquiring the proportion of the preset time interval in the sum of the initial communication time lengths of the units, and correcting the initial communication time lengths of the units based on the proportion to obtain the corrected communication time lengths of the units.
Further, the calculation formula of the communication time length of each corrected unit is as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
In summary, the time division multiplexing control system for wind farm units provided in this embodiment only uses one master control system to perform time division multiplexing control on all units in the wind farm, so as to solve the problem that the traditional wind farm control system excessively depends on each unit master control system, and reduce the overall manufacturing cost and maintenance cost of the units and the wind farm at the same time.
EXAMPLE III
In order to implement the above embodiments, the present disclosure also provides an electronic device, including: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor, performs the method according to one embodiment.
Example four
In order to implement the above embodiment, the present disclosure further provides a computer-readable storage medium on which a computer program is stored, where the computer program is executed by a processor to implement the method according to the first embodiment.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A time division multiplexing control method for a wind power plant unit is characterized by comprising the following steps:
acquiring a preset time interval of unit control instructions in a wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and a master control system;
determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the master control system;
correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit;
controlling each set in the wind power plant by using a master control system based on the corrected communication time length of each set;
the wind power plant comprises a main control system and N units.
2. The method of claim 1, wherein the initial communication time duration for each unit in the wind farm is calculated as follows:
in the formula, t i The method comprises the steps of setting the initial communication time length of the ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of the units in the wind power plant, setting di to be the signal transmission distance between the ith unit and a main control system, and setting dj to be the signal transmission distance between the jth unit and the main control system.
3. The method according to claim 1, wherein the modifying the initial communication time length of each unit in the wind farm according to the preset time interval to obtain the modified communication time length of each unit comprises:
acquiring the sum of the initial communication time lengths of all units in the wind power plant;
when the sum of the initial communication time lengths of all the units in the wind power plant is smaller than or equal to the preset time interval, taking the initial communication time length of each unit as the corrected communication time length of each unit;
when the sum of the initial communication time lengths of the units in the wind power plant is larger than the preset time interval, acquiring the proportion of the preset time interval in the sum of the initial communication time lengths of the units, and correcting the initial communication time lengths of the units based on the proportion to obtain the corrected communication time lengths of the units.
4. The method according to claim 3, wherein the modified communication time duration of each unit is calculated as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
5. A time division multiplexing control system of a wind farm unit, characterized in that the system comprises:
the acquisition module is used for acquiring a preset time interval of unit control instructions in the wind power plant, the total number of units in the wind power plant and signal transmission distances between each unit and the master control system;
the determining module is used for determining the initial communication time length of each unit in the wind power plant according to the preset time interval of the unit control instructions in the wind power plant, the total number of the units in the wind power plant and the signal transmission distance between each unit and the main control system;
the correction module is used for correcting the initial communication time length of each unit in the wind power plant according to the preset time interval to obtain the corrected communication time length of each unit;
the control module is used for controlling each unit in the wind power plant by using the master control system based on the corrected communication time length of each unit;
the wind power plant comprises a main control system and N units.
6. The system of claim 5, wherein the initial communication time duration for each group in the wind farm is calculated as follows:
in the formula, t i The method comprises the steps of setting an initial communication time length of an ith unit in the wind power plant, setting T to be a preset time interval of a unit control command, setting N to be the total number of units in the wind power plant, setting di to be a signal transmission distance between the ith unit and a main control system, and setting dj to be a signal transmission distance between the jth unit and the main control system.
7. The system of claim 5, wherein the modification module comprises:
the acquiring unit is used for acquiring the sum of the initial communication time lengths of all the units in the wind power plant;
the correction unit is used for taking the initial communication time length of each unit as the communication time length of each corrected unit when the sum of the initial communication time lengths of the units in the wind power plant is smaller than or equal to the preset time interval; when the sum of the initial communication time lengths of all the units in the wind power plant is larger than the preset time interval, obtaining the proportion of the preset time interval in the sum of the initial communication time lengths of all the units, and correcting the initial communication time lengths of all the units based on the proportion to obtain the corrected communication time lengths of all the units.
8. The system of claim 7, wherein the modified communication time duration of each unit is calculated as follows:
in the formula, t i,x Corrected communication time length, t, for the ith unit in the wind farm j The initial communication time length of the jth unit in the wind power plant is T, the preset time interval of the unit control command is T, and N is the total number of the units in the wind power plant.
9. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the method according to any of claims 1 to 4 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 4.
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