CN107742173B - Longitudinal layout method for horizontal axis wind turbine group - Google Patents
Longitudinal layout method for horizontal axis wind turbine group Download PDFInfo
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- CN107742173B CN107742173B CN201711169845.3A CN201711169845A CN107742173B CN 107742173 B CN107742173 B CN 107742173B CN 201711169845 A CN201711169845 A CN 201711169845A CN 107742173 B CN107742173 B CN 107742173B
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a longitudinal layout method of a horizontal axis wind turbine group, which comprises the following steps: s1, determining the arrangement direction of the horizontal axis wind turbine group; s2, determining the arrangement distance of the horizontal axis wind turbine group; s3, determining the rotation direction of the first row of horizontal axis wind turbine units; s4, determining the rotation direction of the second horizontal axis wind turbine set: and S5, determining the rotating direction of the horizontal-axis wind turbine units in the third row and the following rows. The longitudinal layout method has the advantages that on the premise of not changing the overall layout scheme of the original longitudinal wind turbine group and not greatly increasing the construction cost of the components such as the wind turbine blades, the generator set and the like, the upstream wind turbine and the downstream wind turbine are arranged at intervals in different rotating directions, the loss of the rotating kinetic energy of the upstream wind turbine is captured by the downstream wind turbine, the adverse effect of the upstream wind turbine on the downstream wind turbine is reduced, and therefore the overall wind turbine output power of the longitudinally arranged wind turbine group can be improved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a longitudinal layout method of a horizontal axis wind turbine group.
Background
For a wind power plant with a certain total floor area, if the mutual influence of fans is not considered, theoretically, the more the number of the fans is, the higher the power generation amount per unit volume is, the mutual interference effect among the fans is actually considered, and particularly, the adverse influence of the wake flow of the upstream fan cluster on the downstream fan cluster is considered, so that the arrangement density of the fan cluster cannot be too high, but the downstream fan cluster cannot completely avoid the longitudinal influence area (about ten times the diameter of the fan) of the upstream fan cluster due to the requirements and limitations of the topographic environment of the wind power plant, construction conditions, construction cost, total installed capacity and the like; the following disadvantages tend to be associated with conventional longitudinally arranged horizontal axis wind turbines: the incoming flow passes through the upstream wind turbine group, the wake flow has certain rotational kinetic energy, and according to the Betz theory, the rotational kinetic energy of the portion cannot be effectively utilized by the upstream wind turbine group, and has certain blocking effect on the rotation of the downstream wind turbine group (if the rotational directions of the upstream wind turbine and the downstream wind turbine are the same), so that the output power of the integral wind turbine of the traditional longitudinally-arranged wind turbine group is not high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a longitudinal layout method of a horizontal axis wind turbine group, which solves the problem that the output power of wind wheels of a downstream wind turbine group is reduced due to the wake flow influence of an upstream wind turbine group, particularly the influence of the rotational kinetic energy, through the interval arrangement of the wind turbine groups in different rotational directions of an upstream wind turbine group and a downstream wind turbine group.
In order to achieve the purpose, the invention adopts the following technical scheme:
a longitudinal layout method of a horizontal axis wind turbine group comprises the following steps:
s1, determining the arrangement direction of the horizontal axis wind turbine group;
s2, determining the arrangement distance of the horizontal axis wind turbine group;
s3, determining the rotation direction of the first row of horizontal axis wind turbine units;
s4, determining the rotation direction of the second horizontal axis wind turbine set:
the rotating direction of the second row of horizontal axis wind turbine units is opposite to that of the first row of horizontal axis wind turbine units, and the wind turbine blades and the first row of wind turbine blades are in a reverse propeller type;
s5, determining the rotating direction of the horizontal-axis wind turbine units in the third row and the following rows:
the rotating direction of the third row and the following rows of horizontal axis wind turbine units is opposite to that of the front row of wind turbine units, and the blades of the front and the back air exhaust turbines are of reverse paddle type.
Preferably, the prevailing wind direction is determined in S1 from the wind field wind direction and the wind rose diagram, and the longitudinal horizontal axis wind fleet is arranged in the prevailing wind direction.
Preferably, the horizontal axis wind turbines are arranged at the distance of 4D to 10D in the S2, wherein D is the diameter of the horizontal axis wind turbine.
More preferably, the horizontal axis wind turbines are arranged at a longitudinal distance of between 4D and 5D in S2.
Preferably, the direction of rotation of the first row of wind turbine assemblies in S3 is determined by the direction of rotation of the generator.
The invention has the advantages of
The longitudinal layout method of the horizontal axis wind turbine group provided by the invention solves the problem that the output power of the wind wheels of the downstream wind turbine group is reduced due to the wake flow influence of the upstream wind turbine group, particularly the influence of the rotational kinetic energy, by arranging the wind turbine groups in different rotational directions at intervals.
The invention has the advantages that on the premise of not changing the overall layout scheme of the original longitudinal wind turbine group and not greatly increasing the construction cost of the wind turbine blades, the generator set and other parts, the upstream wind turbine and the downstream wind turbine are arranged at intervals in different rotating directions, the downstream wind turbine is utilized to capture the rotating kinetic energy loss of the upstream wind turbine, the adverse effect of the upstream wind turbine on the downstream wind turbine is reduced, and the overall wind wheel output power of the longitudinally arranged wind turbine group can be improved.
Drawings
FIG. 1 is a flow chart of a method for longitudinal layout of a horizontal axis wind turbine cluster according to the present invention;
fig. 2 is a schematic view of the longitudinal arrangement of the three-exhaust fan blade section wing profiles in mutual reverse paddle type.
Detailed Description
The present invention is described in detail below by way of examples, it should be noted that the examples are only for the purpose of further illustration, and are not to be construed as limiting the scope of the present invention, and that those skilled in the art can make insubstantial modifications and adaptations to the invention in light of the above teachings. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
As shown in fig. 1, the method for longitudinally arranging a horizontal axis wind turbine cluster in this embodiment includes the following steps:
s1, determining the arrangement direction of the horizontal axis wind turbine group:
in order to effectively capture wind resources in a wind farm, generally, a dominant wind direction is determined according to wind direction of the wind farm and a wind energy rose diagram under the condition allowed by construction conditions, and a longitudinal horizontal axis wind turbine group is arranged in the dominant wind direction.
S2, determining arrangement distance of the horizontal axis wind turbine group:
the arrangement distance of the horizontal axis wind turbine group is between 4D and 10D, wherein D is the diameter of the horizontal axis wind turbine; the arrangement distance of the wind turbine group is comprehensively restricted by requirements of a wind field, a topographic environment, construction conditions, construction cost, total installed capacity and the like.
S3, determining the rotation direction of the first row of horizontal axis wind turbine units:
the rotating direction of the first row of wind turbine units is anticlockwise or clockwise; generally determined by the direction of rotation of the generator.
S4, determining the rotation direction of the second horizontal axis wind turbine set:
in order to effectively capture the rotation kinetic energy in the wake flow of the first row of wind turbine generator, the rotation direction of the second row of wind turbine generator is designed to be opposite to the rotation direction of the first row of wind turbine generator, and the wind turbine generator blades and the first row of wind turbine generator blades are of a reverse propeller type, namely, the projection directions of the connecting line of the front edge and the rear edge of the wing section of the second row of wind turbine generator and the connecting line of the front edge and the rear edge of the wing section of the first row of wind turbine generator in the.
S5, determining the rotating direction of the horizontal-axis wind turbine units in the third row and the following rows:
the third row of wind power units and the following wind power units have the rotation direction opposite to that of the front row of wind power units, and the blades of the front and the rear wind power units are of reverse paddle type, namely the projection directions of the connecting line of the front edge and the rear edge of the wing of the front row of wind power wing section and the connecting line of the front edge and the rear edge of the wing of the rear wind power wing section in the rotation plane are opposite. As shown in FIG. 2, the cross-section airfoils of the blades of the three-fan exhauster are longitudinally arranged in a mutually reverse paddle type at intervals.
The invention provides a longitudinal layout method of a horizontal axis wind turbine group, which specifies that for the wind turbine group with fixed wind turbine diameter (symbol D, unit meter) longitudinally arranged, when the interval between the upstream wind turbine group and the downstream wind turbine group is within 10D length, the rotating direction of the upstream wind turbine group and the downstream wind turbine group is arranged at intervals (anticlockwise or clockwise), the wing profiles of the blades of the upstream wind turbine group and the downstream wind turbine group are mutually in a counter-paddle type (figure 2), namely the rotating direction of the rear wind turbine group is opposite to the rotating direction of the front wind turbine group, and the paddle type of the rear wind turbine group and the paddle type of the front wind turbine group are mutually in a counter-paddle type (figure 2). Three examples are listed below to illustrate the beneficial effects of the present invention:
the wind power generation system comprises two longitudinally arranged horizontal axis wind turbines, wherein the diameters of the wind turbines are 128m, the distance between the wind turbines is 800m, the incoming flow wind speed is 9.8m/s, the incoming flow wind speed is perpendicular to the rotating plane of the wind turbines, when the rotating directions of the front and the rear wind turbines are the same, the wind wheel output power of a wind turbine group is 4.368MW, and when the rotating directions of the front and the rear wind turbines are opposite and are mutually reverse-paddle type, the wind wheel output power of the wind turbine group is 4.521 MW;
the wind power generation system comprises two longitudinally arranged horizontal axis wind turbines, wherein the diameters of the wind turbines are 128m, the distance between the wind turbines is 500m, the incoming flow wind speed is 9.8m/s, the incoming flow wind speed is perpendicular to the rotating plane of the wind turbines, when the rotating directions of the front and the rear wind turbines are the same, the wind wheel output power of a wind turbine group is 4.174MW, and when the rotating directions of the front and the rear wind turbines are opposite and are mutually opposite, the wind wheel output power of the wind turbine group is 4.498 MW;
the wind power generation system comprises four longitudinally arranged horizontal axis wind turbines, wherein the diameters of the wind turbines are 128m, the second row distance is 557m, the third row distance is 660m, the fourth row distance is 644m, the incoming flow wind speed is perpendicular to the rotation plane of the wind turbines, when the rotation directions of the four wind turbines are the same, the output power of wind wheels of a wind turbine group is 6.775MW, and when the rotation directions of the front row and the rear row of the four wind turbines are opposite and are mutually reverse paddle type, the output power of the wind wheels of the wind turbine group is 7.133 MW.
From the above data, it can be seen that the output power of the wind turbine fleet can be effectively increased using the layout method of the present invention. When the distance between the two wind turbine units with the longitudinally arranged horizontal shafts is 6D-7D, the layout method can improve the output power of the whole wind turbine by about 3.5% compared with the traditional method, and when the distance between the two wind turbine units is reduced to be 4D-5D, the output power of the whole wind turbine can be improved by about 7.7%, namely along with the reduction of the distance between the wind turbine units, the advantage effect that the output power of the whole wind turbine can be improved by the layout method is more obvious compared with the traditional method.
The invention has the advantages that on the premise of not changing the overall layout scheme of the original longitudinal wind turbine group and not greatly increasing the construction cost of the wind turbine blades, the generator set and other parts, the upstream wind turbine and the downstream wind turbine are arranged at intervals in different rotating directions, the downstream wind turbine is utilized to capture the rotating kinetic energy loss of the upstream wind turbine, the adverse effect of the upstream wind turbine on the downstream wind turbine is reduced, and the overall wind wheel output power of the longitudinally arranged wind turbine group can be improved.
It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 scope of the present invention.
Claims (3)
1. A longitudinal layout method of a horizontal axis wind turbine group is characterized by comprising the following steps:
s1, determining the arrangement direction of the horizontal axis wind turbine group;
s2, determining the arrangement distance of the horizontal axis wind turbine group;
s3, determining the rotation direction of the first row of horizontal axis wind turbine units;
s4, determining the rotation direction of the second horizontal axis wind turbine set:
the rotating direction of the second row of horizontal axis wind turbine units is opposite to that of the first row of horizontal axis wind turbine units, and the wind turbine blades and the first row of wind turbine blades are in a reverse propeller type;
s5, determining the rotating direction of the horizontal-axis wind turbine units in the third row and the following rows:
the rotating direction of the third row and the following rows of horizontal axis wind turbine units is opposite to that of the front row of wind turbine units, and the blades of the front and the back air exhaust turbines are of a reverse paddle type;
and in the step S2, the horizontal axis wind turbines are arranged at a longitudinal distance of 10D, wherein D is the diameter of the horizontal axis wind turbine.
2. The vertical layout method according to claim 1, wherein a prevailing wind direction is determined in S1 based on a wind field wind direction and a wind rose diagram, and a vertical horizontal axis wind cluster is arranged in the prevailing wind direction.
3. The longitudinal layout method of claim 1, wherein the direction of rotation of the first row of wind energy units in S3 is determined by the direction of rotation of the generator.
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Citations (4)
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| CN102362068A (en) * | 2009-02-20 | 2012-02-22 | 湘电达尔文有限责任公司 | Offshore wind park |
| CN103047081A (en) * | 2011-10-11 | 2013-04-17 | 通用电气公司 | Method and system for control of wind turbines |
| CN104018992A (en) * | 2014-06-13 | 2014-09-03 | 北京大学 | Method for arranging fans catching middle-low-attitude wind energy in existing wind field |
| CN203962289U (en) * | 2014-03-13 | 2014-11-26 | 赵东平 | A kind of horizontal axis wind-driven generator of novel bilobed wheel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956675B (en) * | 2010-10-28 | 2012-06-20 | 马可超 | Jet-propelled wind driven generator |
| ES2600861B1 (en) * | 2015-07-03 | 2017-11-21 | Gamesa Innovation & Technology, S.L. | Control system to detect and avoid misalignment situations in wind turbines |
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2017
- 2017-11-22 CN CN201711169845.3A patent/CN107742173B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102362068A (en) * | 2009-02-20 | 2012-02-22 | 湘电达尔文有限责任公司 | Offshore wind park |
| CN103047081A (en) * | 2011-10-11 | 2013-04-17 | 通用电气公司 | Method and system for control of wind turbines |
| CN203962289U (en) * | 2014-03-13 | 2014-11-26 | 赵东平 | A kind of horizontal axis wind-driven generator of novel bilobed wheel |
| CN104018992A (en) * | 2014-06-13 | 2014-09-03 | 北京大学 | Method for arranging fans catching middle-low-attitude wind energy in existing wind field |
Non-Patent Citations (1)
| Title |
|---|
| An experimental study on the effects of relative rotation direction on the wake interferences among tandem wind turbines;Yuan Wei，et.;《Science China Physics, Mechanics & Astronomy》;20140515;第935-941页，图1 * |
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