Blue Aspirations Floaiting LiDAR With Meteoroloifcal Sensor

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Blue Aspirations Floaiting LiDAR With Meteoroloifcal Sensor
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Features
Specifications
Highlight:

Floaiting LiDAR

,

Floaiting LiDAR sensor

,

meteoroloifcal sensor

Basic Infomation
Place of Origin: China
Brand Name: Blue Aspirations
Certification: OWA Stage 2
Model Number: BA-FLS-NX5
Payment & Shipping Terms
Packaging Details: 3 containers
Delivery Time: 2-3month
Payment Terms: T/T
Supply Ability: 3 Units/Month Without pre validation.
Product Description

Floaiting LiDAR with meteoroloifcal sensor

1. Floating Platform

The floating platform is comprised of 4 foam blocks contained inside PE casings. The blocks are manufactured through rotational molding, and their modular structure allows the floating Lidar system to be easily disassembled for loading onto a truck or inside a container. This saves time and costs for domestic and international transportation.
 
Blue Aspirations Floaiting LiDAR With Meteoroloifcal Sensor 0
 

2. Design Principles

Reliability is the most important feature of any floating Lidar system and is a core tenet of Blue Aspirations’ design philosophy. Drawing on our team’s expertise in design principles from the telecommunications industry, the system emphasizes redundancy in its key components. The commercial model was also iteratively designed using simulations to model failure paths and eliminate single points of failure. Key examples of how these principles are embodied in the floating Lidar system include:

  • A minimum of two acquisition sources for wind and motion data;
  • A minimum of two of each data acquisition sensor link;
  • Two servers configured to seamlessly trade off between one another in the event of server downtime;
  • Redundancy in each power supply system to ensure negligible risk of power shortage;
  • Battery banks installed in separate cabinets with an auto-switch circuit designed to transfer load in the event of a single battery bank malfunction;
  • Data communication sub-system with at least two channels of up-link and down-link in the absence of 2/3/4G; and
  • Backup source for direction and motion measurements to maintain the supply of high-quality data, even in the event of significant damage to the system’s masts, antennas, primary GNSS-INS and compass sensors.

Blue Aspirations Floaiting LiDAR With Meteoroloifcal Sensor 1

 

3. Motion Compensation

Since the motion of the buoy affects LiDAR wind direction and wind speed measurements, Blue Aspirations’ system is equipped with a motion sensor to acquire high-resolution pitch and roll data, and heading and DGPS sensors to obtain accurate heading information. Our patented algorithm then uses a projection method to correct the LiDAR wind speed data to the appropriate horizontal plane. By calculating the LiDAR installation angle offset from the heading sensor’s true north, the system is likewise able to transform the collected wind direction data to the correct angle.

 

4. Technical Details

Modules Details
Buoy

-Diameter: 5m

-Height: 9m

-Weight: 14.5t

-Net Buoyancy: 10.5t

-Structure: multiple cabinets

-Materials: PE, carbon steel, stainless steel

Mooring System

-Water-depth: >5m

-Anchor: cement block and/or mooring anchor

-Mooring: one-point mooring

-Adjustable to suit site-specific requirements including deep water-depth

-Multiple mooring system is also available

Control System

-Industrial PLC

-or BA's embedded controller

LiDARs

-LiDARs: Dual LiDAR(default)

(Windcube offshore version; ZX 300M, Movelaser B300M)

Power Supply

-Battery Capacity: total 60kwh in multiple groups;

-Wind Turbines: 2×350W;

-Solar Panels: 1600W, multiple groups;

- Fuel cells: 2x110W with 224L fuel

Navigation System

-AIS×1

-Radar reflector×2

-IALA-compliant navigation ligh1×-1

Supporting dual navigation light but Need to meet the requirement of local authority

Positioning System

-Directions: 0-360°

-Direction accuracy: 0.09° (2m baseline)

-Positioning accuracy: 0.5m (horizontal, SBAS mode)

Motion Sensors -GNSS-INS sensor×2 or GNSS-INS sensor×1 and MRU sensor×1
Communication Systems

-SAT Modules: Iridium SBD×1, other Broadband SAT data modules (optional);

-Mobile Networks: 2G/3G/4G×1; 2.4G/5G Wi-Fi×2; Local Ethernet connection

Data Acquisition

-Dual Industrial PCs

-Interfaces: serial×6, Ethernet×2

Hydrological sensors

(optional)

-Doppler current sensor

-Wave sensor and water depth sensor

-Water salinity and temperature sensor

 

5 Typhoon Resilience

Despite the risks of building and operating wind farms in locations prone to severe weather, many of China’s offshore wind farms are developed in high-risk areas. Yet typhoons and other extreme events can pose formidable challenges to wind and met ocean measurement campaigns without proper preparation. As the market leader in China, Blue Aspirations’ floating Lidar system is designed to address precisely these challenges. The system integrates backups for all main components, fuel cells to supplement power from solar panels and wind turbines, and a dual-LiDAR setup in its standard configuration. For added protection, its hull also incorporates a large counterweight and residual buoyancy that mitigates the risk of capsizing or sinking. Truly robust typhoon resilience can only come from sturdy structural design, redundant systems design, and diligent operational support.

 

CHABA TYPHOON CASE STUDY

On July 1st, 2022 Typhoon Chaba passed through a prospective site for offshore wind farm development in the South China Sea. The site was amid a wind measurement campaign using an industry-standard ZX 300M Lidar integrated into a Blue Aspirations FLS.

Typhoon Chaba originated in the south and headed northwest for several days before landfalling in Guangdong province. Chaba brought maximum sustained wind speeds of approximately 140 km/hr, maximum wind gusts of 170 km/hr, and maximum wave heights of 10.67m. Despite these extreme conditions, our unit continued operating effectively – achieving data availability for all measurement heights at 100%, marking the third occasion this floating Lidar system continued to function without issue amidst typhoon conditions.

 
 
 
 
 

6. Summary of Validation

We would like to include in this document a summary of the reports from our clients or from third parties nominated by our clients that support our data accuracy and data availability claims.

A summary of the main results is provided below.

Client Project Name Buoy and LiDAR Model Reference Issuer of the report Time Main findings
Blue Aspirations

Carbon Trust

OWA Road map Stage 2 Verification (Dundee, Scotland)

BA-FLS-NX5,

ZX 300M x 1;

Windcube offshore V2 x1

 

Offshore

Met Mast

Inch Cape

 

Oldbaum Services from the UK

(3rd-party certifier ).

DNV will review the final report

2023.3 - 2023.9

Interim Stage 2 Assessment Report for Windcube:

Duration: 77days; System availability: 100%

Data availability: >99.2% for all measurement heights

Data accuracy(Wind speed):

>2m/s: R2 > 0.991, Slope: 0.995~1.001

4~16m/s: R2 > 0.985, Slope: 0.988~1.001

Data accuracy(Wind Direction):

91m: R2 >0.998, Slope: 1.003,

101m: R2 >0.998, Slope: 1.003,

111m:R2 >0.998, Slope: 1.003,

China Three Gorges

Yangjiang,

Guangdong

BA-FLS-NX5,

ZX 300M

Offshore

Met Mast

Blue

Aspirations

2021

Duration: 2 months; System availability: 100%

Data availability: >99.98% for all measurement heights

Data accuracy(Wind speed):

>2m/s: R2 > 0.9959, Slope: 0.9964~1.0096

4~16m/s: R2 > 0.9921, Slope: 0.9986~1.0122

Data accuracy(Wind Direction):

50m: R2 >0.9987, Slope: 1.0125, Offset:-1.9075

100m: R2 >0.9986, Slope: 1.0198, Offset:-1.4955

China Three Gorges

Yangjiang,

Guangdong

BA-FLS-NX5,

Molas B300M

Offshore

Met Mast

Shanghai

Institute

2022

Duration: 2 months; System availability: 100%

Data availability: >98.5% for all measurement heights

Data accuracy(Wind speed):

>2m/s: R2 > 0.99, Slope: 1.00~1.01

4~16m/s: R2 > 0.99, Slope: 1.00~1.02

Data accuracy(Wind Direction):

R2 > 0.97, Slope: 1.03, Offset: -1.3

Blue Aspirations

Prototype

validation,

Zhoushan, nearshore

BA-FLS-2.4,

ZX 300M

Fixed ZX

300M

DNVGL 2019

Duration: 1 month; System availability: 100%

Data availability: >97% for all measurement heights

Data accuracy(Wind speed):

>2m/s: R2 > 0.994, Slope: 0.994~1.003

Data accuracy(Wind Direction):

R2 > 0.999, Slope: 0.998-1.002,

Offset: -0.83~0.04

Huarun

Cangnan,

Zhejiang

BA-FLS-NX5,

ZX 300M

Offshore

Met Mast

Huarun 2020

Duration: 1 month; System availability: 100%

Data availability: >96.24% for all measurement heights except 120m (Note: 91.31%, several foggy days)

Data accuracy(Wind speed):

>2m/s : R2 > 0.9918, Slope: 0.9889~1.0283

4~16m/s: R2 > 0.9851, Slope: 0.9851~0.9938

Data accuracy(Wind Direction):

R2 > 0.9981, Slope: 0.9826~0.9961, Offset: -0.758~1.4559

Shanghai

Institute

Nanhui,

Shanghai

BA-FLS-NX5,

ZX 300M

Fixed

platform

ZX 300

Blue

Aspirations

2020

Duration: 2 months; System availability: 100%

Data availability: >99.7% for all measurement heights

Data accuracy(Wind speed, >2m/s and 4~16m/s): R2 > 0.97, Slope: 0.98~1.02

Note: the platform LiDAR has a fatal issue with wind direction thus Wind direction is not compared

Power

China

Shantou

BA4.1S,

ZX 300M

    2020

Duration: 2 months; System availability: 100%

Data availability: >99.0% for all measurement heights

 
7. Turbulence Intensity Correction

Turbulence Intensity (TI) is one of the key design inputs for offshore wind turbines and foundations. For floating LiDAR, turbulence correction is still one disputable field since normally the measured TI is higher due to the motion of the buoy under waves since the motion correction normally cannot remove all the motion effects to the 1-s wind speed data. We developed a correction algorithm to correct the FLS-measured TI to a real level and carried out a comparison after the correction with an offshore met mast in 2021. The chart and table show the results of this correction. We will also correct TI along with the data service by default.

 

 

Wind speed@50m FLS Average TI Raw FLS Average TI Corrected Met Mast Average TI

TI diff ratio,

FLS vs Met Mast(%)

TI diff,

FLS vs Met Mast

[2,3] 0.180492 0.112551 0.107520 4.68 0.005031
[3,4] 0.128281 0.078571 0.079221 -0.82 -0.00065
[4,5] 0.139076 0.078529 0.078367 0.21 0.000162
[5,6] 0.133846 0.069284 0.067774 2.23 0.00151
[6,7] 0.142129 0.078143 0.075735 3. 18 0.002408
[7,8] 0.145033 0.068586 0.066215 3.58 0.002371
[8,9] 0.153255 0.069925 0.066153 5.70 0.003772
[9, 10] 0.162506 0.064650 0.065711 - 1.61 -0.001061
[ 10, 11] 0.173643 0.066369 0.063559 4.42 0.00281
[ 11, 12] 0.180964 0.063365 0.063800 -0.68 -0.000435
[ 12, 14] 0.180442 0.066502 0.065880 0.94 0.000622
[ 14, 16] 0.198287 0.069350 0.073287 -5.37 -0.003937
[ 16, 18] 0.197597 0.080980 0.078003 3.82 0.002977
[ 18,inf] 0.194325 0.079881 0.078303 2.02 0.001578

 

 
8.  Carbon Trust OWA Stage 1 to Stage 3 Roadmap

A. INTRODUCTION

In partnership with nine offshore wind developers, the Carbon Trust launched the Offshore Wind Accelerator (OWA) programme and in early 2014, the OWA released its Floating LiDAR Roadmap for Commercial Acceptance (the “OWA Roadmap”). The OWA Roadmap outlines the requirements floating LiDAR systems must satisfy to belong to one of three distinct stages of maturity:

Stage I: Baseline;

Stage II: Pre-commercial; and

Stage III: Commercial.

The BA FLS currently meets the requirements for Stage I, however, the BA FLS has met the availability requirements required by Stage III for more than 30 campaigns with FLS equipped with double LiDARs.

Stage II and III incorporate high accuracy and availability requirements along with evidence of multiple successful long and short verification campaigns against trusted references. In an effort to provide greater confidence to its clients and partners, Blue Aspirations devised the following strategic roadmap for achieving the OWA Roadmap’s Stage II and Stage III classification.

B. OWA STAGE II AND STAGE III REQUIREMENTS

The OWA Roadmap’s Stage II and Stage III data availability and accuracy requirements are as follows:

Availability

KPI Definition Acceptance Criteria
Best Practice, Stage3 Minimun Stage 2, Only
MSA1M Monthly System Availability ≥95% ≥90%
OSACA Overall System Availability ≥97% ≥95%
MPDA1M Monthly Post-processed Data Availability ≥85% ≥80%
OPDACA Overall Post-processed Data Availability ≥90% ≥85%

Accuracy

KPI Definition Acceptance Criteria
Best Practice, Stage3 Minimun Stage 2, Only
Xmws Wind speed – Slope 0.98 – 1.02 0.97 – 1.03
mws Wind speed – Coefficient of Determination >0.98 > 0.97
Mmwd Mean Wind Direction – Slope 0.97 – 1.03 0.95 – 1.05
OFFmwd Mean Wind Direction – Offset < 5° < 10°
mwd Wind direction – Coefficient of Determination > 0.97 > 0.95

The OWA requires all Stage II and Stage III systems to have completed campaigns meeting the following duration and frequency criteria:

# Stage 2 Requirement Description Required Months Number of Required Campaigns
1 Validation of the LiDAR performance onshore in a fixed frame of reference The necessary time to fill all the wind bins 1
2 Validation of the floating LiDAR performance offshore under dynamic conditions 6 1
 

 

C. CURRENT STATUS

Blue Aspirations carried out the OWA Stage 2 verification in early March 2023 beside the Inch Cape met mast in Scotland. The system kept a very good health condition even powering dual LiDARs(Windcube V2 offshore version and ZX 300M) simultaneously for more than six months. The basic Stage 2 Type Verification report has been delivered by the UK 3rd-party certifier Oldbaum services.

The period of the assessment is 10-03-2023 to 10-09-2023 (6 months). The Windcube LiDAR’s data availability across all heights is over 98.77%, while the ZX is over 96.31%.

 

 

And here are the data results compared with Stage 2 KPIs for both LiDARs.

 

All the KPIs meet Stage 2 Best Practice criteria.

The final report will be also reviewed by DNV.

 

D. ROADMAP to STAGE 3

We will not stop at Stage 2, we will go further to the Stage 3. According to the OWA Stage 3 requirements we draw up a plan as follows.

 

Type Verification, Classification and pre-commercial projects requirements for Stage 3

 

Plan and action

Stage 2 FL Type Verification No.1 of BA-FLS-NX5 compared with Inch Cape met mast for Stage 2 FL Type Verification ( In progress in Scotland). May count as 1 of 3 long trials and may count to Classification trials.

FL Unit Verificaiton

(3 long and 3 short trials)

Three long trials(May count to Classification trials):

1. No.1 of BA-FLS-NX5 is in progress of Stage 2 with met mast Inch Cape in Scotland

2. No.1 of BA-FLS-NX5 will be compared with No.2 met mast for more than 3 months in the next year( The No.2 met mast will be recommended by 3rd party).

3. No.2 of BA-FLS-NX5 will be compared with No.2 met mast for more than 3 months in the next year.

Three short trials:

4. No.3 of BA-FLS-NX5 has been deployed in Jiangsu Province of China and is in progress for the short trial of unit verification.

5. The other 2 short trails will be compared with a fixed platform before 2 specific commercial projects(Pre-validation for one month) or we will deploy 2 of BA-FLS-NX5 directly for the unit verification

FL offshore Classification

(3 long trails)

All these 3 FL Unit Verification long trails may count to FL offshore Classification trials.
Early Commercial Project deployment 5 deployments for more than one year. We have actually more than 30 commercial projects in China and more than 5 projects that the FLS has run more than 1 year with over 95% of data availability. However, we still need to follow the OWA Roadmap to be supervised under a third party to prove it. And we will find DNV,UL or other third party to take the job for the following commercial projects.

 

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