CN106089599B - Power curves of wind-driven generator sets method for drafting based on quantile - Google Patents
Power curves of wind-driven generator sets method for drafting based on quantile Download PDFInfo
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- CN106089599B CN106089599B CN201610391047.4A CN201610391047A CN106089599B CN 106089599 B CN106089599 B CN 106089599B CN 201610391047 A CN201610391047 A CN 201610391047A CN 106089599 B CN106089599 B CN 106089599B
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Abstract
The present invention provides the power curves of wind-driven generator sets method for drafting based on quantile, in power wind speed coordinate system, bin is defined with wind speed section, the multiple performance number points corresponding to different quantiles for describing wind power generating set in this wind speed section are found out in each bin, there are one corresponding probability Ps for each quantile, being chosen in each bin has the corresponding performance number point of identical quantile, these performance number point lines of selection are formed the power curve that the quantile corresponds to probability P.Such power curves of wind-driven generator sets method for drafting based on quantile, when measuring wind power generating set performance number and drawing the power curve based on quantile, even if there is abnormal high or abnormal low performance number caused by due to the faulty operation or false readings etc., since the performance number that all selections are needed the method that is calculated unlike taking the average value of performance number participates in calculating, therefore, it is more accurate can so that the power curve of wind power generating set is drawn for this method.
Description
Technical field
The present invention relates to curve plotting method, especially a kind of power curves of wind-driven generator sets based on quantile is drawn
Method belongs to power curves of wind-driven generator sets method for drafting field.
Background technology
In the existing method for drafting for representing power curves of wind-driven generator sets, it is typically chosen the average value institute of performance number
Corresponding line obtains power curve.But it in this method for drafting, has the following problems：In detection wind power generating set power
When, there can be the abnormal high or abnormal low performance number caused by faulty operation or false readings, it is abnormal high or abnormal low by this
Performance number and other performance numbers the obtained performance number average value of operation there are relatively large deviation, the reality with wind power generating set
Power situation is not inconsistent, and therefore, causes result incorrect, it is impossible to the practical real power situation of correct reflection wind power generating set.
In view of this it is special to propose the present invention.
Invention content
The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art and provide a kind of wind-force based on quantile
Generating set power curve plotting method correctly can really reflect the power situation of wind power generating set.
In order to solve the above technical problems, the present invention is using the basic conception of technical solution：
Power curves of wind-driven generator sets method for drafting based on quantile, in power-wind speed coordinate system, with wind speed section
Bin is defined, the multiple power corresponding to different quantiles for describing wind power generating set in this wind speed section are found out in each bin
It is worth point, there are one corresponding probability Ps for each quantile, and being chosen in each bin has the corresponding performance number point of identical quantile, will
These performance number point lines chosen form the power curve that the quantile corresponds to probability P.
Further, bin is defined with the wind speed section with identical wind speed interval.
Further, the quantity of bin and the size of bin are determined by the wind conditions in wind power generating set work location.
Further, when selection corresponds to the point corresponding to the performance number of probability P with identical quantile in each bin,
Point in the region for selecting the distribution density of the point of expression performance number in coordinate system larger.
Further, when selection corresponds to the point corresponding to the performance number of probability P with identical quantile in each bin,
It represents to select the point close to wind speed reference axis in the larger region of the distribution density of the point of performance number in a coordinate system.
Further, the performance number point that probability P is corresponded to identical quantile is chosen in each bin.
Further, P values typically may be selected 0.75,0.84,0.90,0.95.
Further, when selection corresponds to the performance number point of probability P with identical quantile in each bin, in coordinate system
It is represented in each bin in the larger region of the distribution density of the point of performance number, if being corresponded to some in each bin with identical quantile
It is distributed in the circle centered on point corresponding to the performance number of probability P with identical points, then this for selecting in each bin is put and connected
It is connected into curve.
Further, the quantity of measuring point is determined by the width of bin in bin.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
The present invention is based on the power curves of wind-driven generator sets method for drafting of quantile, in power-wind speed coordinate system, with
Wind speed section defines bin, in each bin, describes wind power generating set corresponding to the identical multiple expressions of the quantity of this wind speed section
The point of performance number, being chosen in each bin, there is identical quantile to correspond to the point corresponding to the performance number of probability P, and will choose
Each line formed power curve.Such power curves of wind-driven generator sets method for drafting based on quantile, is measuring
Wind power generating set performance number simultaneously draws the point corresponding to performance number, even if occurring leading due to faulty operation or false readings
The abnormal high or abnormal low performance number caused, but need all detections the method due to being calculated unlike taking the average value of performance number
The performance number of selection participates in calculating, and therefore, this method can abandon the abnormal height caused by faulty operation or false readings
Or abnormal low performance number, it is made not influence the drafting of power curve, so that the power curve of wind power generating set is drawn just
It is really and more accurate, it can really, correctly reflect the power situation of wind power generating set.
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is that the present invention is based on the power curve that the power curves of wind-driven generator sets method for drafting of quantile is drawn
Figure.
Specific embodiment
Power curves of wind-driven generator sets method for drafting based on quantile, detection obtain wind power generating set in each wind speed
Multiple performance numbers of the identical quantity of section, in power-wind speed coordinate system, define bin with wind speed section, are found out in each bin
Describe multiple performance number point corresponding to different quantiles of the wind power generating set in this wind speed section, there are one right for each quantile
Probability P is answered, being chosen in each bin has the corresponding performance number point of identical quantile, by these performance number point lines of selection
Form the power curve that the quantile corresponds to probability P.
Bin is defined with the wind speed section with identical wind speed interval.
Since each wind power generating set is in different place installations, and the wind conditions of various regions, that is, wind speed range is different,
Therefore, the quantity of bin and the size of bin are determined by the wind conditions in wind power generating set work location.
Have in order to more accurately reflect the real power situation of wind power generating set, therefore chosen in each bin
When identical quantile corresponds to the point corresponding to the performance number of probability P, select to represent the distribution density of the point of performance number in coordinate system
Point in larger region.Represent the point in the larger region of the distribution density of the point of performance number, the wind-power electricity generation reflected
The power of unit is truer, and more accurate.
When selection corresponds to the point corresponding to the performance number of probability P with identical quantile in each bin, in a coordinate system
It represents to select the point close to wind speed reference axis in the larger region of the distribution density of the point of performance number.This sampling point, since its institute is right
The probability P bigger answered this means that more detecting point corresponding to obtained performance number above, also means that selection
This point can characterize that wind power generating set power is correct, accurate probability bigger.
P values typically may be selected 0.75,0.84,0.90,0.95.
As shown in Figure 1, the wind speed section represented by each bin is 3m/s, three power curve, P95, P90 and P84 are shared.
Wherein, P95 is represented, upward from abscissa, in each bin, shares the point of 100 expression performance numbers, selection is each
Point of the probability value more than or equal to 95% and it is linked to be curve in a bin and forms power curve P95.Under this power curve P95
It is square, in each bin there are the points of 4 expression performance numbers, above this curve, in each bin there are 95 to represent performance number
Point.The drafting of power curve P90 and P84 and meaning and so on.
In the present embodiment, the point corresponded to identical quantile corresponding to the performance number of probability P is chosen in each bin
When, represent in a coordinate system performance number point the larger region of distribution density in selection P values as close possible to 1 point, and will
These point connections form power curve.
In other embodiments, being chosen in each bin, there is identical quantile to correspond to corresponding to the performance number of probability P
During point, represented in each bin of coordinate system in the larger region of the distribution density of the point of performance number, if having with some in each bin
Identical quantile corresponds to be distributed in the circle centered on the point corresponding to the performance number of probability P with identical points, then selection is each
This in bin is put and connects to form power curve.
It illustrates：In the larger region of the distribution density of the point of the expression performance number in each bin in a coordinate system,
Including, there is identical quantile to correspond to the point corresponding to the performance number of probability P=0.95, also, with this point in each bin
In circle for the same radius in the center of circle, the points of the possessed point for representing performance number are identical, then select this point in each bin simultaneously
Connect into power curve.This point is identical by the points included in the circle in the center of circle, illustrates that data are more concentrated, and data more collect
In the accuracy of the power of wind power generating set that is reflected of its numerical value of position and accuracy rate it is relatively high.Therefore above method energy
More realistically reflect the power characteristic of wind power generating set.
In the present embodiment, the quantity of measuring point is determined by the width of bin in a bin.Bin it is larger when, one
Measured in a bin performance number and describe represent corresponding power value point number it is more, bin it is smaller when, in a bin
The number for measuring performance number and describing the point of expression corresponding power value is less.As being 1 i.e. wind speed section is 1m/s in a bin
It in bin, measures performance number and describes the point for representing corresponding power value as 50, and be 1.5 i.e. wind speed section in a bin be 1m/s
Bin in, measure performance number and describe represent corresponding power value point be 100.
The present invention is based on the power curves of wind-driven generator sets method for drafting of quantile, in power-wind speed coordinate system, with
Wind speed section defines bin, in each bin, describes wind power generating set corresponding to the identical multiple expressions of the quantity of this wind speed section
The point of performance number, being chosen in each bin, there is identical quantile to correspond to the point corresponding to the performance number of probability P, and will choose
Each line formed power curve.Such power curves of wind-driven generator sets method for drafting based on quantile, is measuring
Wind power generating set performance number simultaneously draws the point corresponding to performance number, even if occurring leading due to faulty operation or false readings
The abnormal high or abnormal low performance number caused, but need all detections the method due to being calculated unlike taking the average value of performance number
The performance number of selection participates in calculating, and therefore, this method can abandon the abnormal height caused by faulty operation or false readings
Or abnormal low performance number, it is made not influence the drafting of power curve, so that the power curve of wind power generating set is drawn just
It is really and more accurate, it can really, correctly reflect the power situation of wind power generating set.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only to the present invention's
Preferred embodiment is described, and not the spirit and scope of the present invention are defined, and is not departing from design philosophy of the present invention
Under the premise of, various changes and modifications that professional and technical personnel in the art make technical scheme of the present invention belong to this hair
Bright protection domain.
Claims (7)
1. the power curves of wind-driven generator sets method for drafting based on quantile, it is characterised in that：In power-wind speed coordinate system
In, bin is defined with wind speed section, is found out in each bin and describes wind power generating set in the multiple corresponding to difference of this wind speed section
The performance number point of quantile, there are one corresponding probability Ps for each quantile, and being chosen in each bin, there is identical quantile to correspond to
Performance number point, in the larger region of the corresponding performance number point distribution density of the identical quantile, if with some in each bin
It corresponds to identical quantile in the circle centered on the point corresponding to the performance number of probability P and is distributed with identical points, then select
It selects this point in each bin and line forms the power curve that the quantile corresponds to probability P.
2. the power curves of wind-driven generator sets method for drafting according to claim 1 based on quantile, it is characterised in that：
Bin is defined with the wind speed section with identical wind speed interval.
3. the power curves of wind-driven generator sets method for drafting according to claim 1 based on quantile, it is characterised in that：
The quantity of bin and the size of bin are determined by the wind conditions in wind power generating set work location.
4. the power curves of wind-driven generator sets method for drafting according to claim 1 based on quantile, it is characterised in that：
When selection corresponds to the point corresponding to the performance number of probability P with identical quantile in each bin, power is represented in a coordinate system
The point close to wind speed reference axis is selected in the larger region of the distribution density of the point of value.
5. the power curves of wind-driven generator sets method for drafting according to claim 4 based on quantile, it is characterised in that：
The performance number point that probability P is corresponded to identical quantile is chosen in each bin.
6. the power curves of wind-driven generator sets method for drafting according to claim 5 based on quantile, it is characterised in that：
P values may be selected 0.75,0.84,0.90,0.95.
7. according to power curves of wind-driven generator sets method for drafting of the claim 1-6 any one of them based on quantile,
It is characterized in that：The quantity of measuring point is determined by the width of bin in bin.
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| JP4093815B2 (en) * | 2002-07-30 | 2008-06-04 | 東洋電機製造株式会社 | Output leveling control circuit of PWM converter in wind power generation |
| DE102007036447A1 (en) * | 2007-08-02 | 2009-02-05 | Nordex Energy Gmbh | Method and device for determining a characteristic curve for an electrical variable of a wind energy plant |
| CN103244348B (en) * | 2012-02-08 | 2016-05-04 | 北京能高自动化技术股份有限公司 | Speed-changing oar-changing power curves of wind-driven generator sets optimization method |
| CN103291544B (en) * | 2013-06-21 | 2016-01-13 | 华北电力大学 | Digitizing Wind turbines power curve method for drafting |
| CN104131950B (en) * | 2014-07-24 | 2017-02-01 | 重庆大学 | Partitioning determination method for threshold value of temperature characteristic quantity of wind generating set |
| CN104217077A (en) * | 2014-08-29 | 2014-12-17 | 国家电网公司 | Method for establishing wind-driven generator power output random model capable of reflecting wind speed variation characteristics |
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Effective date of registration: 20190430 Address after: 100052 801-03, 8th Floor, No. 1 Caishikou Street, Xicheng District, Beijing Co-patentee after: CHINA DATANG CORPORATION NEW ENERGY SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: BEIJING TANGHAO POWER ENGINEERING TECHNOLOGY RESEARCH CO.,LTD. Address before: 100052 801-03, 8th Floor, No. 1 Caishikou Street, Xicheng District, Beijing Patentee before: BEIJING TANGHAO POWER ENGINEERING TECHNOLOGY RESEARCH CO.,LTD. |
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