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Method of acquiring incident wind field and modeling with lidar sensor

A technology of laser radar and sensors, applied in the direction of utilizing re-radiation, control of wind turbines, monitoring of wind turbines, etc., can solve erroneous data or valid data representing special situations such as unfavorable meteorological conditions, which is not optimal , predicting impact and other issues

Pending Publication Date: 2020-06-02
INST FR DU PETROLE
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  • Claims
  • Application Information

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Problems solved by technology

Since LiDAR measurements inevitably contain anomalous data, including erroneous data generated due to reasons such as device failure or valid data representing special circumstances such as unfavorable meteorological conditions, forecasts are affected and often are not optimal

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  • Method of acquiring incident wind field and modeling with lidar sensor
  • Method of acquiring incident wind field and modeling with lidar sensor
  • Method of acquiring incident wind field and modeling with lidar sensor

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Embodiment Construction

[0089] mark

[0090] In the specification, the following notations are used:

[0091] x,y,z: The direction of the three-dimensional coordinate system, where z is the vertical axis and x is the main direction of the wind.

[0092] θ and The orientation angles of the lidar sensor are such angles as figure 1 Shown: Angle θ is the angle formed by the projection of the measurement axis of the lidar in the plane (y,z), and is the angle made by the lidar's measurement axis in the plane formed by the axis x and the projection of the lidar's measurement axis in the plane (y,z).

[0093] m(t): The measurement value of the lidar sensor at the measurement point.

[0094] V j,x (k), v j,y (k), v j,z (k): Projection of wind speed on x, y, z.

[0095] ω: an ordered vector consisting of all components of the wind speed at the point in space where the wind is estimated on the axes x, y and z of the three-dimensional coordinate system.

[0096] An estimate of (t) at time t.

[009...

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Abstract

The invention relates to a method for detecting aberrant values of an incident wind field in a space located upstream of a lidar sensor. The method comprises acquiring and modelling a measurement rws(k) with the lidar sensor of an incident wind field, estimating a median mr(k) and a mean absolute deviation dr(k) of measurements of the incident wind field in real time and detecting aberrant valuesin real time using the estimated median mr(k) and the mean absolute deviation dr(k).

Description

technical field [0001] The invention relates to the field of lidar (light detection and ranging) sensors used as remote sensing devices for measuring wind speed. It also relates to the field of wind turbines equipped with lidar sensors and to the control of such wind turbines. Background technique [0002] The detection of outliers is ubiquitous in many data processing tasks, covering a wide range of fields such as signal processing, industrial control, etc. A good definition of an outlier is a measurement that differs so much from other measurements that it is suspected to be caused by a different mechanism. [0003] In the field of wind energy, the detection and observation of light using lidar has been recognized as a reliable and viable remote sensing technique for measuring and predicting wind speed over the past few years. [0004] Specifically, recent advances in lidar technology have facilitated the deployment of lidar in real-time control applications. LiDAR is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01P5/26F03D7/04
CPCG01S17/95G01P5/26F03D7/042F05B2270/328F05B2270/329G01S17/58F03D17/00F05B2270/8042Y02A90/10Y02E10/72G01S7/4808G06F17/16G06F17/17
Inventor F·吉耶曼H-N·恩古延
Owner INST FR DU PETROLE