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Wind Lidar System

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hj lee

on 18 March 2014

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Transcript of Wind Lidar System

Wind
LiDAR System

March. 12. 2014
Brandon Hadley
Blake Rector
Hyun Joo Lee
Intro
Wind as a Resource
Wind Turbine
LiDAR System Description
Applicable Standards
Communications
Tag list, data points
System Benefits
System Cost
Lessons learned
Agenda
Wind as a resource
Application Standard
Communications
System Diagram
Lessons Learned

Global Perspective
Wind Turbine
Overview of Wind Turbine
Wind Turbine components
Wind Turbine control : Yaw, Blade Pitch, Torque
Current Measurement Technology : Windvane (direction) & Anemometer (speed)
Wind Optical Sensor
Processing Unit

Ethernet Switch
Fiber Optic Cable
Router
PLCs

System Description
Hardware
Software
SCADA/HMI software
: Monitoring and controlling whole process

Network management software
: selected network components can be managed graphically via web browser from both local and remote sites—anytime and anywhere.

Ports:

Controller Area Network (CAN)
Registered Jack (RJ45)
Protocols:
CAN Bus
TCP/IP
Basic Equipment
Ethernet Switch
– EDS 208/205
– Moxa Industrial Switches

Standards for Ethernet Switch
IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for Flow Control
IEEE 802.1D-2004 for Spanning Tree Protocol
IEEE 802.1w for Rapid STP
IEEE 802.1p for Class of Service
IEEE 802.1Q for VLAN Tagging

Safety Standards
IEC 60825-1 for Eye safety
IEC 60529, IP65 (optical head)
IP64 (processing unit) for Housing
IEC 60068-2 for Shock and Vibrations
IEC 61326-1, IEC 62311, IEC 61000-4, FCC part 15 for EMC and Lightning
IEC 61010-1 for Electrical safety

Wind Iris Unit Approx Cost:
$ 178,000
Installation varies: $ 3,000 to $ 5,000 (Depending on location)
Training and warranty @ additional cost
Networking costs (Ethernet routers…etc)
Training personnel for operation and maintenance

Cost
Cannot predict the wind!
Unit has greatest payoff
if turbine(s) are out of alignment (best ROI)
Good for calibration of existing turbine equipment
Technology is being improved

System benefits
Increased Accuracy of Wind Direction Measurement
---> Improved Yaw Control

Horizontal wind speed
Wind direction
CNR – Carrier-noise-ratio
Tilt and roll angles
Timestamp
Radial wind speeds
Range
Tag list, Data points
Wind as a resource

National Perspective
System benefits


Better Pitch control
Here, preview time does have benefits
Maintenance/wear and tear on towers


Fiona Dunne and Lucy Y. Pao, Benefit of Wind Turbine Preview Control as a Function of Measurement Coherence and Preview Time
Example Payoff
Assumed:
2.5MW
Turbine
For each
1% increase
in capacity factor Approx
$18K
increase in a years time

6% or greater (CF) increase
approaches the
pay-off amount of one unit

Turbine Mounted LiDAR
(Light Detection And Ranging)
LUCY Y. PAO and KATHRYN E. JOHNSON
Control of Wind Turbines
http://www.moxa.com/Solutions/Renewable/windpower.htm
Wind as a resource

Local Perspective
J.F Manwell, et al,
Wind Energy Explained: Theory, Design, and Application
. 2002.
NREL:
47,000,000,000 MWh
annual available wind generation in US
(in "available" windy areas w/ over 30% capacity factor)
--->
5,300,000 MW
average generation


US DoE:
3,900,000,000 MWh
annual total US electricity consumption

--->
445,205 MW
average generation
Power loss due to static misalignment
Schlipf, et al,
Prospects of Optimization of Energy Production by LIDAR Assisted Control of Wind Turbines
, 2011
Misalignment and horizontal shear. From a wind field (light gray), LIDAR estimation (black) and sonic anemometer simulation (dark gray).
Schlipf, et al,
Prospects of Optimization of Energy Production by LIDAR Assisted Control of Wind Turbines
, 2011
Yaw Control Benefits
--- Various Increased Production Values

1-2% (Schlipf 2011)
6% (Wind Iris website)
10% (Dakin, 2009)
Advanced knowledge ("preview time") does not seem to help
Benefits result from more accurate measurements
Source: Avent Lidar Technology
Range:
40m to 400m
Fiber Pulsed Laser @ 54um
15 degree half angle
Full transcript