Engine room-type laser wind finding radar for multi-distance layered measurement of wind field and measurement method thereof

A wind-measuring radar and wind-measuring technology, which is applied in the field of meteorological radar detection, can solve the problems of high cost, large volume of the whole machine, poor reliability of the whole machine, etc., and achieve the effect of simple structure and high sensitivity

Active Publication Date: 2017-05-31
前郭尔罗斯蒙古族自治县岱旭风能有限公司
View PDF18 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both Wind Iris and Nacelle Lidar can be layered in distance, that is, they can measure wind speed and wind direction at multiple distances at the same time, but they use pulsed lasers, which are bulky and costly, which is unaffordable for small wind turbines.
ZephIR DM adopts the continuous laser system, and realizes the adjustable measurement distance of 10-300 meters by means of motor focusing, and can measure the wind field at 10 distances. The focusing method makes it time-consuming to complete the entire wind field measurement at one time, and the mechanical scanning and focusing components make the whole machine poor in reliability and short in life

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Engine room-type laser wind finding radar for multi-distance layered measurement of wind field and measurement method thereof
  • Engine room-type laser wind finding radar for multi-distance layered measurement of wind field and measurement method thereof
  • Engine room-type laser wind finding radar for multi-distance layered measurement of wind field and measurement method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1, such as figure 1 As shown, a nacelle-type laser wind radar for multi-distance and layered wind field measurement according to an embodiment of the present invention includes: a narrow linewidth seed light source 1, an optical fiber amplifier 2, an optical fiber beam splitter 3, and an acousto-optic frequency shifter 4 , fiber optic circulator 5, optical switch 6, first optical antenna 7, second optical antenna 8, third optical antenna 9, fourth optical antenna 10, fifth optical antenna 11, sixth optical antenna 12, 2×2 optical fiber beam combiner 13 , balanced photodetector 14 and signal processing circuit 15 .

[0041]The output end of the narrow line width seed light source 1 is connected with the input end of the optical fiber amplifier 2, the output end of the optical fiber amplifier 2 is connected with the input end of the optical fiber beam splitter 3, and the first output end 31 of the optical fiber beam splitter 3 is connected with the acousto-optic s...

Embodiment 2

[0050] Embodiment 2, a measurement method of a nacelle type laser wind measurement radar for multi-distance and layered measurement of wind field, is characterized in that the method comprises the following steps:

[0051] Step 1, the local oscillator light generated by the narrow-linewidth seed light source 1 passes through the optical fiber amplifier 2, then enters the acousto-optic frequency shifter 4 through the first output end 31 of the optical fiber beam splitter 3, and then enters the 2×2 optical fiber beam combiner 13 a first input terminal 131;

[0052] Step 2, the signal light generated by the narrow-linewidth seed light source 1 passes through the optical fiber amplifier 2 and enters the first port 51 of the optical fiber circulator 5 through the second output end 32 of the optical fiber splitter 3, and the signal light passes through the first port 51 of the optical fiber circulator 5 The second port 52 enters the optical switch 6, and the optical switch 6 switche...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an engine room-type laser wind finding radar for multi-distance layered measurement of a wind field. An output end of a narrow linewidth seed light source is connected with an input end of an optical fiber amplifier; the output end of the optical fiber amplifier is connected with the input end of an optical fiber splitter; a first output end of the optical fiber splitter is connected with the input end of an acoustooptic frequency shifter; a second output end of the optical fiber splitter is connected with a first port of an optical fiber circulator; the output end of the acoustooptic frequency shifter is connected with a first input end of an optical fiber combiner; a third port of the optical fiber circulator is connected with a second input end of the optical fiber combiner; a second port of the optical fiber circulator is connected with the input end of a photoswitch; a plurality of output ports of the photoswitch are connected with an even number of optical antennas; the output end of 2*2 optical fiber combiner is connected with the input end of a balanced photoelectric detector; and the output end of the balanced photoelectric detector is connected with a signal processing circuit. The invention further provides a measurement method of the engine room-type laser wind finding radar for the multi-distance layered measurement of the wind field. The engine room-type laser wind finding radar and the measurement method thereof have the beneficial effects that the radar cost is reduced and the measurement capability of the radar wind field is improved.

Description

technical field [0001] The invention relates to the technical field of meteorological radar detection, in particular to a nacelle-type laser wind-measuring radar for multi-distance and layered wind field measurement and a measurement method thereof. Background technique [0002] Wind power generation is to convert wind energy into electrical energy, accurately and timely measure the wind direction and wind speed of the wind power plant, and adjust the wind turbine to the best position, which is the key to improving power generation efficiency and reducing equipment wear and tear. There is a large deviation between the data obtained by the traditional wind measurement tower wind measurement method adopted by the wind power plant and the actual wind direction and wind speed faced by a single wind turbine, so that the wind turbine cannot be adjusted to the best position, which affects the wind power efficiency. In order to improve power generation efficiency, foreign manufactur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95
CPCG01S17/95Y02A90/10
Inventor 伍波
Owner 前郭尔罗斯蒙古族自治县岱旭风能有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap