CN111223009A - Wind power plant machine site wind speed correction method, device, equipment and medium - Google Patents

Wind power plant machine site wind speed correction method, device, equipment and medium Download PDF

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CN111223009A
CN111223009A CN202010105225.9A CN202010105225A CN111223009A CN 111223009 A CN111223009 A CN 111223009A CN 202010105225 A CN202010105225 A CN 202010105225A CN 111223009 A CN111223009 A CN 111223009A
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wind speed
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CN111223009B (en
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丁林
鞠苏荣
兰水泉
覃荣君
杨明明
王道欣
孙杨
徐亚男
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China Resource Power Technology Research Institute
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Abstract

The application discloses a wind speed correction method, a wind speed correction device, wind speed correction equipment and a computer readable storage medium for a wind power plant computer locus, wherein the method comprises the following steps: acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a pre-established deviation curve database; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed under one or more terrain environments, various position information and various simulated wind speeds; and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target deviation curve. According to the technical scheme, the wind power plant which is put into operation is combined to correct the simulated wind speed to be corrected of the wind speed machine position to be corrected, so that the accuracy of correcting the simulated wind speed to be corrected is improved.

Description

Wind power plant machine site wind speed correction method, device, equipment and medium
Technical Field
The present application relates to the field of wind resource assessment technologies, and in particular, to a method, an apparatus, a device, and a computer-readable storage medium for correcting a wind speed at a wind farm location.
Background
Wind resource assessment is an important condition for assessing wind farm construction. The data of the anemometer tower is crucial to the evaluation of wind resources.
In the process of wind resource assessment, the wind speed at each machine position needs to be calculated by relying on data of the wind measuring tower as boundary conditions of speed and direction entrance, but the representativeness of the wind measuring tower to part of machine positions (the machine positions are called as risk machine positions) is poor due to terrain tendency, distance, altitude difference and the like, and correspondingly, the calculated wind speed is greatly different from the actual wind speed at the risk machine positions. For such a situation, at present, the wind speed of the risk machine site calculated according to the anemometer tower data is generally not corrected or the wind speed of the risk machine site calculated according to the anemometer tower data is manually corrected according to experience, which may cause a relatively large deviation between the calculated wind speed of the risk machine site and the actual wind speed, and accordingly, may cause a relatively large deviation between the calculated generated energy and the actual generated energy, and therefore, may reduce the accuracy of wind resource evaluation.
In summary, how to correct the wind speed at the machine location point of the wind farm to reduce the deviation between the calculated wind speed and the actual wind speed at the machine location point is a technical problem to be solved urgently by those skilled in the art at present.
Disclosure of Invention
In view of the above, an object of the present application is to provide a wind speed correction method, device, apparatus and computer readable storage medium for wind speed correction of a wind farm machine site, so as to reduce a deviation between a calculated wind speed of the machine site and an actual wind speed.
In order to achieve the above purpose, the present application provides the following technical solutions:
a wind power plant machine site wind speed correction method comprises the following steps:
acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the position of the wind speed machine to be corrected, which is obtained according to the wind speed data measured by the target anemometer tower, and the position information comprises a horizontal distance and an altitude difference;
acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a deviation curve database established in advance; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed under one or more terrain environments, multiple position information and multiple simulated wind speeds;
and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by using the target deviation curve so as to obtain the corrected wind speed.
Preferably, the pre-creating of the deviation curve database includes:
acquiring all wind power plants which are put into operation in a target terrain environment;
for each wind power plant, acquiring the minimum wind speed of each wind measuring device in the wind power plant, taking each wind measuring device as the current wind measuring device, and taking the minimum wind speed as the current wind speed of the corresponding current wind measuring device;
respectively obtaining N pre-marked altitude differences between the current wind measuring equipment and the current wind measuring equipment according to the current wind speed of the current wind measuring equipment1Within a range of altitude differenceAnd the horizontal distances between the current wind measuring equipment and the current wind measuring equipment are respectively in N which is divided in advance2Simulating wind speed of each machine position point within each horizontal distance range, and respectively acquiring N pre-divided by altitude difference between the current wind measuring equipment and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2Obtaining N by using the simulated wind speed and the actual wind speed of each machine position point within the range of the horizontal distance1*N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
adjusting the current wind speed according to a preset step length, taking the adjusted current wind speed as the current wind speed of the current wind measuring equipment, and returning to execute that the altitude differences between the current wind measuring equipment and the current wind measuring equipment respectively obtained according to the current wind speed of the current wind measuring equipment are respectively in N which are marked in advance1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2And simulating the wind speed of each machine position point within the range of the horizontal distance until the adjusted current wind speed is greater than the maximum wind speed of the wind power plant, so as to obtain the deviation curve database.
Preferably, N pre-marked respectively obtained altitude differences between the current wind measuring equipment and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2Before the actual wind speed of each machine position point in each horizontal distance range, the method further comprises the following steps:
and judging whether the number of the machine location points in each horizontal distance range is greater than or equal to a set value, if not, expanding the horizontal distance range in which the number of the machine location points is less than the set value so as to enable the number of the machine location points in the expanded horizontal distance range to be greater than or equal to the set value.
Preferably, N is previously divided1An altitude difference range comprising:
according to the wind power station anddividing the altitude difference between the machine position with the largest altitude difference of the current wind measuring equipment and the current wind measuring equipment into N1Individual altitude difference ranges;
by pre-dividing into N2A horizontal distance range comprising:
dividing N according to the horizontal distance between the current wind measuring equipment and the machine position with the largest horizontal distance difference in the wind power plant2A horizontal distance range.
Preferably, when a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is acquired from a deviation curve database created in advance, the method further includes:
and if the position information between the wind speed machine position point to be corrected and the target wind measuring tower is greater than the maximum position information in the deviation curve database, acquiring a deviation curve with the maximum position information from the deviation curve database, and taking the deviation curve with the maximum position information as the target deviation curve.
Preferably, when a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is acquired from a deviation curve database created in advance, the method further includes:
if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected exceeds the maximum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the maximum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the maximum simulated wind speed as the target deviation curve;
and if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected is smaller than the minimum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the minimum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the minimum simulated wind speed as the target deviation curve.
Preferably, the correcting the simulated wind speed to be corrected at the position of the wind turbine to be corrected by using the target deviation curve to obtain a corrected wind speed includes:
and obtaining an objective function expression of the simulated wind speed and the actual wind speed by using the target deviation curve, and obtaining the corrected wind speed by using the objective function expression and the simulated wind speed to be corrected at the position of the wind speed machine to be corrected.
A wind farm machine site wind speed correction device comprises:
the first acquisition module is used for acquiring the terrain environment where the to-be-corrected fan position point is located, and acquiring the position information between the to-be-corrected fan position point and a target wind measuring tower and the to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the position of the wind speed machine to be corrected, which is obtained according to the wind speed data measured by the target anemometer tower, and the position information comprises a horizontal distance and an altitude difference;
the second acquisition module is used for acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a deviation curve database established in advance; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed under one or more terrain environments, multiple position information and multiple simulated wind speeds;
and the correction module is used for correcting the simulated wind speed to be corrected at the position of the wind turbine to be corrected by using the target deviation curve so as to obtain the corrected wind speed.
A wind farm machine site wind speed correction device comprising:
a memory for storing a computer program;
a processor for implementing the steps of the wind farm site wind speed correction method as defined in any one of the above when said computer program is executed.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of a wind farm computer site wind speed modification method as defined in any one of the preceding claims.
The application provides a wind speed correction method, a wind speed correction device, wind speed correction equipment and a computer readable storage medium for a wind power plant computer locus, wherein the method comprises the following steps: acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the position of a fan speed machine to be corrected, which is obtained according to the wind speed data measured by the target wind measuring tower, and the position information comprises a horizontal distance and an altitude difference; acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a pre-established deviation curve database; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed in one or more terrain environments, various position information and various simulated wind speeds; and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target deviation curve so as to obtain the corrected wind speed.
According to the technical scheme disclosed by the application, the terrain environment where the to-be-corrected wind speed machine site is located, the position information between the to-be-corrected wind speed machine site and the target wind measuring tower and the target deviation curve corresponding to the to-be-corrected simulated wind speed are obtained from the pre-established deviation curve database, the to-be-corrected simulated wind speed at the to-be-corrected wind speed machine site is corrected by utilizing the target deviation curve, and the pre-established deviation curve database is established according to the operation data of the wind power plant which is put into operation, so that the accuracy of correcting the to-be-corrected simulated wind speed by combining the to-be-corrected simulated wind speed of the to-be-corrected wind speed machine site of the wind power plant which is put into operation can be improved, the deviation between the corrected wind speed of the to-be-corrected wind speed machine site and the actual wind speed can be reduced, and the deviation between the calculated generated energy and the actual generated energy can be reduced, so as to improve the accuracy of wind resource assessment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flowchart of a wind speed correction method for a wind farm machine site according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of the creation of a bias curve database provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of a wind speed correction device for a wind farm machine site according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a wind speed correction device for a wind farm location provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, which shows a flowchart of a wind speed correction method for a wind farm location provided in an embodiment of the present application, a wind speed correction method for a wind farm location provided in an embodiment of the present application may include:
s11: acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the to-be-corrected simulated wind speed is the wind speed at the to-be-corrected wind speed machine position obtained according to the wind speed data measured by the target wind measuring tower, and the position information can include a horizontal distance and an altitude difference.
When wind resource assessment is carried out, if the wind speed at the risk machine position needs to be corrected, the terrain environment where the wind speed machine position to be corrected is located can be obtained, the position information between the wind speed machine position to be corrected and a target wind measuring tower which is established and selected in the wind power resource assessment site is obtained, and the simulated wind speed to be corrected is obtained.
The above-mentioned terrain environment can be divided according to terrain conditions, and can be specifically divided into complex mountains, hills, plains, plateaus, gobi and the like; the target anemometer tower can be specifically an anemometer tower closest to the horizontal distance of the anemometer position point to be corrected, so that the deviation of the anemometer tower in wind speed simulation calculation is reduced, and the accuracy of wind speed correction on the anemometer position point to be corrected is improved conveniently; the position information specifically includes a horizontal distance between the anemometer location point to be corrected and the target anemometer tower, and an altitude difference between the anemometer location point to be corrected and the target anemometer tower; the above-mentioned to-be-corrected simulated wind speed is the wind speed at the position of the to-be-corrected wind speed machine calculated according to the wind speed data measured by the target anemometer tower, that is, the calculated wind speed.
S12: acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a pre-established deviation curve database; the deviation curve database can comprise deviation curves of all machine positions in the operated wind power plant under one or more terrain environments, various position information and various simulated wind speeds and actual wind speeds.
Before wind resource assessment is carried out, a deviation curve database can be created in advance, wherein the deviation curve database comprises deviation curves of machine positions in the wind power plant which is put into operation under one or more terrain environments, a plurality of position information and a plurality of simulated wind speeds and actual wind speeds, namely the deviation curve database is created according to operation data of the wind power plant which is put into operation.
After the information of the wind turbine site to be corrected is acquired, a target deviation curve corresponding to the acquired terrain environment, position information and simulated wind speed to be corrected can be acquired from a pre-established deviation curve database according to the acquired terrain environment, position information and simulated wind speed to be corrected, so that the acquired simulated wind speed to be corrected can be corrected by using the target deviation curve.
The terrain environment of the target deviation curve is similar to the terrain environment of the to-be-corrected wind speed machine position point, so that the accuracy of correcting the to-be-corrected simulated wind speed of the to-be-corrected wind speed machine position point is improved.
S13: and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target deviation curve so as to obtain the corrected wind speed.
After the target deviation curve is obtained, the target deviation curve can be used for correcting the simulated wind speed to be corrected, so that the corrected wind speed is obtained.
In the process, the simulated wind speed to be corrected of the wind speed machine position to be corrected is corrected by the aid of the target deviation curve acquired from the deviation curve database, and the deviation curve database is established according to the wind power plant which is put into operation, so that the process corrects the simulated wind speed to be corrected of the wind speed machine position to be corrected by the aid of operation data of the wind power plant which is put into operation. Compared with the prior art that the simulated wind speed to be corrected is not corrected or the simulated wind speed to be corrected is corrected by means of manual experience, the method and the device can not only correct the simulated wind speed to be corrected of the wind speed machine site to be corrected, but also improve the accuracy of wind speed correction of the wind speed machine site to be corrected, so that the deviation between the corrected wind speed at the wind speed machine site to be corrected and the actual wind speed at the wind speed machine site to be corrected is reduced, the deviation between the generated energy obtained by calculation of the corrected wind speed and the actual generated energy at the wind speed machine site to be corrected can be reduced, and the accuracy of wind resource assessment is improved.
According to the technical scheme disclosed by the application, the terrain environment where the to-be-corrected wind speed machine site is located, the position information between the to-be-corrected wind speed machine site and the target wind measuring tower and the target deviation curve corresponding to the to-be-corrected simulated wind speed are obtained from the pre-established deviation curve database, the to-be-corrected simulated wind speed at the to-be-corrected wind speed machine site is corrected by utilizing the target deviation curve, and the pre-established deviation curve database is established according to the operation data of the wind power plant which is put into operation, so that the accuracy of correcting the to-be-corrected simulated wind speed by combining the to-be-corrected simulated wind speed of the to-be-corrected wind speed machine site of the wind power plant which is put into operation can be improved, the deviation between the corrected wind speed of the to-be-corrected wind speed machine site and the actual wind speed can be reduced, and the deviation between the calculated generated energy and the actual generated energy can be reduced, so as to improve the accuracy of wind resource assessment.
Referring to fig. 2, a flow chart of creating a deviation curve database provided by the embodiment of the present application is shown. The wind speed correction method for the wind power plant machine site provided by the embodiment of the application is characterized in that a deviation curve database is created in advance, and the method comprises the following steps:
acquiring all wind power plants which are put into operation in a target terrain environment;
for each wind power plant, acquiring the minimum wind speed of each wind measuring device in the wind power plant, taking each wind measuring device as the current wind measuring device, and taking the minimum wind speed as the current wind speed of the corresponding current wind measuring device;
respectively obtaining N pre-marked altitude differences between the current wind measuring equipment and the current wind measuring equipment according to the current wind speed of the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2Simulating wind speed of each machine position point within each horizontal distance range, and respectively acquiring N pre-divided by altitude difference between the simulated wind speed and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2The actual wind speed of each machine position point within the range of the horizontal distance is utilized to obtain N by utilizing the simulated wind speed and the actual wind speed1*N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
adjusting the current wind speed according to a preset step length, taking the adjusted current wind speed as the current wind speed of the current wind measuring equipment, and returning to execute the steps of respectively obtaining the current wind speed of the current wind measuring equipment and the current wind measuring equipmentAre respectively in N pre-marked1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2And simulating the wind speed of each machine position point within the range of the horizontal distance until the adjusted current wind speed is greater than the maximum wind speed of the wind power plant, so as to obtain a deviation curve database.
In the process of correcting the wind speed of the wind power station, the creation process of the deviation curve database specifically comprises the following steps:
step 1: acquiring all wind power plants which are put into operation in a target terrain environment; the target terrain environment mentioned here may be a complex mountain land, a hill, a plain, a plateau, a gobi, etc., and the condition of the simulated input wind speed is substantially consistent with the operating wind speed of the wind farm which is already put into operation.
Step 2: for each wind farm which is put into operation, acquiring the minimum wind speed (which can be recorded as Am/s) of each wind measuring device inside the wind farm, wherein the wind measuring device mentioned here can be specifically a wind measuring tower in the wind farm, a wind measuring device on a wind turbine, a laser radar or the like. After the minimum wind speed of each wind measuring device is obtained, each wind measuring device in the wind power plant can be respectively used as a current wind measuring device, and the minimum wind speed corresponding to the current wind measuring device can be used as the current wind speed of the current wind measuring device;
and step 3: for each current wind measuring device, the following steps may be performed:
step 31: obtaining N pre-marked out by the altitude difference between the current wind measuring equipment and the current wind measuring equipment according to the current wind speed of the current wind measuring equipment1Within the first altitude range of the altitude difference ranges, the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is N which is divided in advance2The simulated wind speed of each machine position point in the first horizontal distance range in each horizontal distance range and the actual wind speed of each machine position point are obtained, and then a deviation curve between the simulated wind speed and the actual wind speed is obtained by utilizing the simulated wind speed and the actual wind speed; wherein the first altitude range may specifically be (h)1，H1) (wherein, h1Can be that0，H1May be 500m), the first horizontal distance range may specifically be(s)1，S1) (wherein, s1Can be 0, S1May be 30 m);
step 32: obtaining N pre-marked out by the altitude difference between the current wind measuring equipment and the current wind measuring equipment according to the current wind speed of the current wind measuring equipment1Within the first altitude range of the altitude difference ranges, the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is N which is divided in advance2The simulated wind speed of each machine position point in a second horizontal distance range in the horizontal distance ranges and the actual wind speed of each machine position point are obtained, and then a deviation curve between the simulated wind speed and the actual wind speed is obtained by utilizing the simulated wind speed and the actual wind speed; wherein the second horizontal distance range may be(s)2，S2) Wherein s is2May be equal to S1，S2May be equal to 2S1-s1Of course, s may be matched as actually required2And S2The calculation mode of (2) is changed;
step 33: similar steps are performed as steps 31, 32, except that the height range is still at N1Within a first altitude range of the altitude difference ranges, the horizontal distance gradually expands outward until the Nth altitude range is completed2Up to the operation of a horizontal distance range to obtain N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
step 34: in pair N1After the first altitude range of the altitude difference ranges completes the operation, the operation can be performed from N1A first altitude range of the altitude difference ranges is extended to a second altitude range, and then steps similar to those of steps 32 to 33 are performed except that the altitude is specifically N here1A second altitude in the range of altitude differences to obtain N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar; wherein the second altitude may be (h)2，H2) Wherein h is2May be equal to H1，H2May be equal to 2H1-h1Of course, h can be adjusted according to actual needs2And H2The calculation mode of (2) is changed;
step 35: in pair N1After the second of the altitude difference ranges has completed the above operation, a similar step to step 34 may be performed, i.e., gradually extending the altitude outward until completion of N1Operating positions of the altitude difference range to obtain N through steps 31 to 351*N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
and 4, step 4: adjusting the current wind speed according to a preset step length (so that the current wind speed is changed from Am/s to (A + a) m/s), taking the adjusted current wind speed as the current wind speed of the current wind measuring equipment, and then returning to execute the step in the step 3;
and 5: and after the processing under the current wind speed condition is finished, returning to execute the step 4 until the adjusted current wind speed is greater than the maximum wind speed of the wind power plant, so as to obtain a deviation curve database.
The process can obtain deviation curves between the simulated wind speed and the actual wind speed under various terrain environments and various position information conditions in each terrain environment, so that the target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed of the wind turbine site to be corrected can be obtained from the deviation curve database during wind resource assessment.
According to the wind speed correction method for the wind power plant machine site, N pre-marked altitude differences between the obtained altitude differences and current wind measuring equipment are respectively obtained1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2Before the actual wind speed of each machine position point in each horizontal distance range, the method can further comprise the following steps:
and judging whether the number of the machine location points in each horizontal distance range is greater than or equal to a set value or not, if not, expanding the horizontal distance range in which the number of the machine location points is less than the set value so as to enable the number of the machine location points in the expanded horizontal distance range to be greater than or equal to the set value.
Respectively obtaining the altitude difference between the current wind measuring equipment and the current wind measuring equipment which are respectively at N marked in advance1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2Before the actual wind speed of each machine position point in each horizontal distance range, it may be determined whether the number of machine position points in each horizontal distance range is greater than or equal to a set value (specifically, may be 50, and of course, this may also be adjusted according to actual needs), and if so, obtaining N previously divided by the altitude difference between the current wind measuring equipment and the altitude difference between the current wind measuring equipment may be performed respectively1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2A step of measuring the actual wind speed of each machine position point within the horizontal distance range; if not, the horizontal distance range in which the number of the machine positions is smaller than the set value can be expanded (S can be specifically expanded to 1.1S, and certainly, the number of the machine positions in the expanded horizontal distance range can also be adjusted according to actual needs), so that the number of the machine positions in the expanded horizontal distance range is larger than or equal to the set value, and therefore sufficient sample number in each horizontal distance range is ensured, the precision of a deviation curve is improved, and the accuracy of correcting the simulated wind speed to be corrected of the wind speed machine position to be corrected is improved.
The wind speed correction method for the wind power plant machine site provided by the embodiment of the application divides N in advance1The altitude difference ranges may include:
n is divided according to the altitude difference between the machine position with the largest altitude difference with the current wind measuring equipment and the current wind measuring equipment in the wind power plant in advance1Individual altitude difference ranges;
by pre-dividing into N2The horizontal distance range may include:
dividing N according to the horizontal distance between the current wind measuring equipment and the machine position with the largest horizontal distance difference between the wind power plant and the current wind measuring equipment2A horizontal distance range.
In dividing N1In the case of a single altitude range, N can be divided in advance according to the altitude difference between the current wind measuring device and the machine location with the greatest altitude difference between the current wind measuring device and the operating wind farm1The range of altitude difference, i.e. the maximum altitude difference can be divided into N1Individual altitude difference ranges; in dividing N2In the case of each horizontal distance range, N can be divided according to the horizontal distance between the current wind measuring equipment and the machine position with the largest horizontal distance difference between the wind power plant which is put into operation and the current wind measuring equipment2A range of horizontal distances, i.e. the maximum horizontal distance can be divided into N2A horizontal distance range.
By the aid of the division mode, all the organic sites in the wind power plant which is put into operation can be guaranteed to participate in creation of the deviation curve database, so that the deviation curve database can contain deviation curves under various conditions as far as possible, a target deviation curve with high precision can be obtained from the deviation curve database, and accuracy of correction of simulated wind speed to be corrected of the wind speed machine sites to be corrected is improved.
The wind speed correction method for the wind power plant machine site provided by the embodiment of the application can further include the following steps when a target deviation curve corresponding to a terrain environment, position information and a to-be-corrected simulated wind speed is obtained from a pre-established deviation curve database:
and if the position information between the wind speed machine position point to be corrected and the target wind measuring tower is greater than the maximum position information in the deviation curve database, acquiring the deviation curve when the position information is maximum from the deviation curve database, and taking the deviation curve when the position information is maximum as the target deviation curve.
When a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected is obtained from a deviation curve database which is created in advance, if the position information between the wind speed machine position to be corrected and the target wind measuring tower is larger than the maximum position information in the deviation curve database, the deviation curve corresponding to the wind speed machine position to be corrected when the position information is maximum in the deviation curve database can be determined as the target deviation curve, so that the simulated wind speed to be corrected of the wind speed machine position to be corrected can be corrected by utilizing the deviation curve database.
The wind speed correction method for the wind power plant machine site provided by the embodiment of the application can further include the following steps when a target deviation curve corresponding to a terrain environment, position information and a to-be-corrected simulated wind speed is obtained from a pre-established deviation curve database:
if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected exceeds the maximum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the maximum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the maximum simulated wind speed as a target deviation curve;
and if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected is less than the minimum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the minimum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the minimum simulated wind speed as a target deviation curve.
Similarly to the above, when the target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is obtained from the deviation curve database created in advance, if the simulated wind speed to be corrected at the wind speed machine site to be corrected exceeds the maximum simulated wind speed in the deviation curve database, the deviation curve corresponding to the maximum simulated wind speed may be used as the target deviation curve, and if the simulated wind speed to be corrected at the wind speed machine site to be corrected is less than the minimum simulated wind speed in the deviation curve database, the deviation curve corresponding to the minimum simulated wind speed in the deviation curve database may be used as the target deviation curve, so that the simulated wind speed to be corrected at the wind speed machine site to be corrected may be corrected using the deviation curve database.
The wind speed correction method for the wind power plant machine site provided by the embodiment of the application corrects the to-be-corrected simulated wind speed at the to-be-corrected wind speed machine site by using the target deviation curve to obtain the corrected wind speed, and the method can comprise the following steps:
and obtaining an objective function expression of the simulated wind speed and the actual wind speed by using the target deviation curve, and obtaining the corrected wind speed by using the objective function expression and the simulated wind speed to be corrected at the position of the wind speed machine to be corrected.
When the target deviation curve is used for correcting the simulated wind speed to be corrected at the position of the wind turbine to be corrected, the target function expression between the simulated wind speed and the actual wind speed can be obtained by using the target deviation curve, and then the simulated wind speed to be corrected at the position of the wind turbine to be corrected can be corrected by using the target function expression so as to obtain the corrected wind speed.
The accuracy of correcting the simulated wind speed to be corrected can be improved by acquiring the target function expression of the target deviation curve and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target function expression, so that the accuracy of wind resource evaluation is improved conveniently.
The embodiment of the present application further provides a wind speed correction device for a wind farm location, which is shown in fig. 3 and shows a schematic structural diagram of the wind speed correction device for the wind farm location provided by the embodiment of the present application, and the wind speed correction device for the wind farm location may include:
the first obtaining module 31 is configured to obtain a terrain environment where the anemometer location point to be corrected is located, and obtain position information between the anemometer location point to be corrected and the target anemometer tower and a simulated wind speed to be corrected; the simulated wind speed to be corrected is the wind speed at the wind speed machine position to be corrected, which is obtained according to the wind speed data measured by the target wind measuring tower, and the position information can comprise a horizontal distance and an altitude difference;
a second obtaining module 32, configured to obtain a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected from a deviation curve database created in advance; the deviation curve database can comprise deviation curves of all machine positions in the operated wind power plant in one or more terrain environments, various position information and various simulated wind speeds and actual wind speeds;
and the correcting module 33 is configured to correct the to-be-corrected simulated wind speed at the to-be-corrected wind speed machine position by using the target deviation curve, so as to obtain a corrected wind speed.
According to the wind speed correction device for the wind turbine site of the wind farm provided by the embodiment of the application, the second obtaining module 32 may include:
the system comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring all wind power plants which are put into operation in a target terrain environment;
the second acquisition unit is used for acquiring the minimum wind speed of each wind measuring device in each wind power plant, taking each wind measuring device as the current wind measuring device and taking the minimum wind speed as the current wind speed of the corresponding current wind measuring device;
a third obtaining unit, configured to obtain, according to the current wind speed of the current wind measuring equipment, N predefined altitude differences between the current wind measuring equipment and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2Simulating wind speed of each machine position point within each horizontal distance range, and respectively acquiring N pre-divided by altitude difference between the simulated wind speed and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2The actual wind speed of each machine position point within the range of the horizontal distance is utilized to obtain N by utilizing the simulated wind speed and the actual wind speed1*N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
an adjusting unit, configured to adjust the current wind speed according to a preset step length, use the adjusted current wind speed as the current wind speed of the current wind measuring equipment, and return to execute N pre-divided differences between the current wind measuring equipment and the altitude differences between the current wind measuring equipment and the obtained altitude differences of the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2And simulating the wind speed of each machine position point within the range of the horizontal distance until the adjusted current wind speed is greater than the maximum wind speed of the wind power plant, so as to obtain a deviation curve database.
The wind speed correction device for the wind power plant machine site provided by the embodiment of the application can further comprise:
a judging module, for respectively obtaining the altitude difference between the current wind measuring equipment and the preset wind measuring equipment which are respectively in the N marked in advance1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment is respectively in N which is divided in advance2Before the actual wind speed of each machine position point in each horizontal distance range, judging whether the number of the machine position points in each horizontal distance range is larger than or equal to a set value or not, if not, expanding the horizontal distance range of which the number of the machine position points is smaller than the set value so as to enable the number of the machine position points in the expanded horizontal distance range to be larger than or equal to the set value.
According to the wind speed correction device for the wind power plant machine site provided by the embodiment of the application, the third obtaining unit may include:
the first dividing unit is used for dividing N according to the altitude difference between the machine position with the largest altitude difference with the current wind measuring equipment and the current wind measuring equipment in the wind power plant in advance1Individual altitude difference ranges;
a second dividing subunit, configured to divide N in advance according to the horizontal distance between the current wind measuring equipment and the machine location with the largest horizontal distance difference between the current wind measuring equipment and the wind power plant2A horizontal distance range.
The wind speed correction device for the wind power plant machine site provided by the embodiment of the application can further comprise:
and a third obtaining module, configured to, when a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is obtained from a deviation curve database created in advance, obtain, if position information between the wind speed machine site to be corrected and the target anemometer tower is greater than maximum position information in the deviation curve database, a deviation curve when the position information is maximum from the deviation curve database, and use the deviation curve when the position information is maximum as the target deviation curve.
The wind speed correction device for the wind power plant machine site provided by the embodiment of the application can further comprise:
a fourth obtaining module, configured to, when a target deviation curve corresponding to the terrain environment, the location information, and the simulated wind speed to be corrected is obtained from a deviation curve database created in advance, if the simulated wind speed to be corrected at the location of the wind turbine to be corrected exceeds a maximum simulated wind speed in the deviation curve database, obtain a deviation curve corresponding to the maximum simulated wind speed from the deviation curve database, and use the deviation curve corresponding to the maximum simulated wind speed as the target deviation curve;
and the fifth obtaining module is used for obtaining a deviation curve corresponding to the minimum simulated wind speed from the deviation curve database if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected is less than the minimum simulated wind speed in the deviation curve database, and taking the deviation curve corresponding to the minimum simulated wind speed as the target deviation curve.
According to the wind speed correction device for the wind power plant machine site provided by the embodiment of the application, the correction module 33 can comprise:
and the correction unit is used for obtaining an objective function expression of the simulated wind speed and the actual wind speed by using the target deviation curve, and obtaining the corrected wind speed by using the objective function expression and the simulated wind speed to be corrected at the position of the wind speed machine to be corrected.
The embodiment of the present application further provides a wind speed correction device for a wind farm location, which is shown in fig. 4, and shows a schematic structural diagram of the wind speed correction device for the wind farm location provided by the embodiment of the present application, and the wind speed correction device for the wind farm location may include:
a memory 41 for storing a computer program;
the processor 42, when executing the computer program stored in the memory 41, may implement the following steps:
acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the wind speed machine position to be corrected, which is obtained according to the wind speed data measured by the target wind measuring tower, and the position information can comprise a horizontal distance and an altitude difference; acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a pre-established deviation curve database; the deviation curve database can comprise deviation curves of all machine positions in the operated wind power plant in one or more terrain environments, various position information and various simulated wind speeds and actual wind speeds; and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target deviation curve so as to obtain the corrected wind speed.
An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the following steps:
acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the wind speed machine position to be corrected, which is obtained according to the wind speed data measured by the target wind measuring tower, and the position information can comprise a horizontal distance and an altitude difference; acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a pre-established deviation curve database; the deviation curve database can comprise deviation curves of all machine positions in the operated wind power plant in one or more terrain environments, various position information and various simulated wind speeds and actual wind speeds; and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by utilizing the target deviation curve so as to obtain the corrected wind speed.
For a description of relevant parts in the wind speed correction device, the equipment and the computer-readable storage medium for the wind power plant computer site provided in the embodiment of the present application, reference may be made to detailed descriptions of corresponding parts in the wind speed correction method for the wind power plant computer site provided in the embodiment of the present application, and details are not repeated here.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A wind power station position wind speed correction method is characterized by comprising the following steps:
acquiring a terrain environment where a to-be-corrected fan speed point is located, and acquiring position information between the to-be-corrected fan speed point and a target wind measuring tower and a to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the position of the wind speed machine to be corrected, which is obtained according to the wind speed data measured by the target anemometer tower, and the position information comprises a horizontal distance and an altitude difference;
acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a deviation curve database established in advance; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed under one or more terrain environments, multiple position information and multiple simulated wind speeds;
and correcting the simulated wind speed to be corrected at the position of the wind speed machine to be corrected by using the target deviation curve so as to obtain the corrected wind speed.
2. The wind farm site wind speed correction method of claim 1, wherein pre-creating a bias curve database comprises:
acquiring all wind power plants which are put into operation in a target terrain environment;
for each wind power plant, acquiring the minimum wind speed of each wind measuring device in the wind power plant, taking each wind measuring device as the current wind measuring device, and taking the minimum wind speed as the current wind speed of the corresponding current wind measuring device;
respectively obtaining N pre-marked altitude differences between the current wind measuring equipment and the current wind measuring equipment according to the current wind speed of the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2Simulating wind speed of each machine position point within each horizontal distance range, and respectively acquiring N pre-divided by altitude difference between the current wind measuring equipment and the current wind measuring equipment1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2Obtaining N by using the simulated wind speed and the actual wind speed of each machine position point within the range of the horizontal distance1*N2Simulating a deviation curve between the wind speed and the actual wind speed by a bar;
adjusting the current wind speed according to a preset step length, taking the adjusted current wind speed as the current wind speed of the current wind measuring equipment, and returning to execute that the altitude differences between the current wind measuring equipment and the current wind measuring equipment respectively obtained according to the current wind speed of the current wind measuring equipment are respectively in N which are marked in advance1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2A step of simulating wind speed for each machine position point in the horizontal distance range,and obtaining the deviation curve database until the adjusted current wind speed is greater than the maximum wind speed of the wind power plant.
3. The wind speed correction method for wind farm machine sites according to claim 2, characterized in that the altitude difference between the obtained wind farm machine sites and the current wind measuring equipment is respectively at N marked in advance1Within the range of altitude difference and the horizontal distance between the current wind measuring equipment and the current wind measuring equipment is respectively in N which is divided in advance2Before the actual wind speed of each machine position point in each horizontal distance range, the method further comprises the following steps:
and judging whether the number of the machine location points in each horizontal distance range is greater than or equal to a set value, if not, expanding the horizontal distance range in which the number of the machine location points is less than the set value so as to enable the number of the machine location points in the expanded horizontal distance range to be greater than or equal to the set value.
4. Wind farm site wind speed correction method according to claim 2, characterized in that N is pre-demarcated1An altitude difference range comprising:
dividing N according to the altitude difference between the machine position with the largest altitude difference with the current wind measuring equipment and the current wind measuring equipment in the wind power plant in advance1Individual altitude difference ranges;
by pre-dividing into N2A horizontal distance range comprising:
dividing N according to the horizontal distance between the current wind measuring equipment and the machine position with the largest horizontal distance difference in the wind power plant2A horizontal distance range.
5. The wind power plant site wind speed correction method according to claim 2, wherein when a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is acquired from a deviation curve database created in advance, the method further comprises:
and if the position information between the wind speed machine position point to be corrected and the target wind measuring tower is greater than the maximum position information in the deviation curve database, acquiring a deviation curve with the maximum position information from the deviation curve database, and taking the deviation curve with the maximum position information as the target deviation curve.
6. The wind power plant site wind speed correction method according to claim 2, wherein when a target deviation curve corresponding to the terrain environment, the position information, and the simulated wind speed to be corrected is acquired from a deviation curve database created in advance, the method further comprises:
if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected exceeds the maximum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the maximum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the maximum simulated wind speed as the target deviation curve;
and if the simulated wind speed to be corrected at the position of the wind speed machine to be corrected is smaller than the minimum simulated wind speed in the deviation curve database, acquiring a deviation curve corresponding to the minimum simulated wind speed from the deviation curve database, and taking the deviation curve corresponding to the minimum simulated wind speed as the target deviation curve.
7. The wind power plant site wind speed correction method of claim 1, wherein correcting the simulated wind speed to be corrected at the wind turbine site to be corrected using the target deviation curve to obtain a corrected wind speed comprises:
and obtaining an objective function expression of the simulated wind speed and the actual wind speed by using the target deviation curve, and obtaining the corrected wind speed by using the objective function expression and the simulated wind speed to be corrected at the position of the wind speed machine to be corrected.
8. A wind power plant machine site wind speed correction device is characterized by comprising:
the first acquisition module is used for acquiring the terrain environment where the to-be-corrected fan position point is located, and acquiring the position information between the to-be-corrected fan position point and a target wind measuring tower and the to-be-corrected simulated wind speed; the simulated wind speed to be corrected is the wind speed at the position of the wind speed machine to be corrected, which is obtained according to the wind speed data measured by the target anemometer tower, and the position information comprises a horizontal distance and an altitude difference;
the second acquisition module is used for acquiring a target deviation curve corresponding to the terrain environment, the position information and the simulated wind speed to be corrected from a deviation curve database established in advance; the deviation curve database comprises deviation curves of all machine positions in the operated wind power plant between the simulated wind speed and the actual wind speed under one or more terrain environments, multiple position information and multiple simulated wind speeds;
and the correction module is used for correcting the simulated wind speed to be corrected at the position of the wind turbine to be corrected by using the target deviation curve so as to obtain the corrected wind speed.
9. A wind farm machine site wind speed correction device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the wind farm site wind speed correction method according to any of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when being executed by a processor, carries out the steps of the wind farm computer site wind speed correction method according to any of the claims 1 to 7.
CN202010105225.9A 2020-02-20 2020-02-20 Wind power plant machine site wind speed correction method, device, equipment and medium Active CN111223009B (en)

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