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Wind resource assessment method and system

A wind resource and wind speed technology, applied in the field of wind resource assessment, can solve problems such as large errors and achieve high-precision assessment results

Pending Publication Date: 2019-07-09
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a method and system for wind resource assessment in order to overcome the defects of the prior art that the wind resource assessment for complex terrain has relatively large errors

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  • Wind resource assessment method and system

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Embodiment 1

[0039] This embodiment provides a system for assessing wind resources. Multiple detection points are set in the wind farm. The system includes a wind speed calculation unit, a control unit, a map construction unit, and a scanning laser radar group set outside the wind farm. The scanning laser radar The group includes a plurality of scanning lidars, and the intersecting parts of the scanning ranges of the plurality of scanning lidars cover all the generating units of the wind farm. Wherein, the scanning laser radar is used to detect the detection point to obtain the corresponding wind speed component, and the wind speed component is the component of the wind speed data of the detection point in the laser emission direction of the scanning laser radar. The wind speed calculation unit is used to calculate the wind speed data of the detection point according to the wind speed components of the same detection point acquired by each scanning laser radar. The control unit is used to ...

Embodiment 2

[0071] In Embodiment 1, in a special case of the position setting of the first scanning laser radar R1 and the second scanning laser radar R2, when scanning at the same elevation angle, the laser scanning plane of the first scanning laser radar R1 and The laser scanning plane of the second scanning laser radar R2 will be in the same plane. At this time, if the wind direction is not parallel to the plane, it is difficult for the first scanning laser radar R1 and the second scanning laser radar R2 to acquire the component of the wind speed data in the direction perpendicular to the plane. In order to avoid the above special situation, the positions of the first scanning laser radar R1 and the second scanning laser radar R2 can be adjusted. This embodiment provides another solution for avoiding the problems caused by the above special situation.

[0072] On the basis of the system for wind resource assessment in Embodiment 1, this embodiment provides a system for wind resource a...

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Abstract

The invention discloses a wind resource assessment method and system. The wind resource assessment method comprises the following steps of: S1, obtaining the wind speed data of all the detection points in sequence, wherein the process of obtaining the wind speed data of one detection point at each time comprises the following steps of: S11, synchronously detecting the detection point through multiple scanning laser radars so as to respectively obtain corresponding wind speed components, wherein the wind speed components are components of the wind speed data of the detection point on the laseremission directions of the scanning laser radars, and S12, carrying out calculation according to the wind speed components of the detection point so as to obtain the wind speed data of the detection point; and S2, constructing a 3D wind resource map of a wind power plant according to the wind speed data of all the detection points. According to the method and system, the wind speed information isacquired by adoption of the plurality of scanning laser radars, so that high-precision assessment for the wind resources of complex-terrain wind power plants fluctuating on wind speed time and space is realized.

Description

technical field [0001] The invention belongs to the technical field of wind resource assessment, in particular to a method and system for wind resource assessment. Background technique [0002] Long-distance scanning lidar can be used to measure wind resources in a large spatial range, with a measurement range of up to 2 kilometers high and a distance of 10 kilometers. Place a scanning lidar outside the wind farm, such as a booster station, to ensure that the monitored wind farm is within its scanning range. After setting the corresponding measurement model, frequency and other configurations, use a certain flow field reconstruction The algorithm processes the measurement data to obtain the wind flow field of the wind farm. The basic assumption of this method is that the wind basically has no fluctuations in the horizontal direction, and it is currently mainly used for flat terrain wind farms and offshore wind farm measurements. [0003] For complex terrain, the wind is af...

Claims

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Application Information

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IPC IPC(8): G01S17/95G01P5/00G01W1/00
CPCG01S17/95G01P5/00G01W1/00Y02A90/10
Inventor 许梦莹蒋勇缪骏
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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