WindSentinel™ Technical Update No.4
Transcription
WindSentinel™ Technical Update No.4
WindSentinel™ Technical Update No.4 Wind Resource Assessment Buoy WindSentinel Floating LiDAR Sensor Performance Update – November 2013 Prepared by AXYS Technologies Inc. 2045 Mills Road Sidney, BC V8L 5X2, Canada www.axystechnologies.com Contact Graham Howe International Business Development, Renewable Energy T: 250 655 5861 C: 250 415-2343 ghowe@axys.com CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 2 Table of Contents EXECUTIVE SUMMARY ................................................................................................................................................................... 4 THE VINDICATOR – A BRIEF HISTORY ............................................................................................................................................. 5 RACE ROCKS – 2009 ....................................................................................................................................................................... 6 DTU HØVSØRE - 2013 .................................................................................................................................................................... 8 FISHERMEN’S ENERGY OF NEW JERSEY – 2013 ............................................................................................................................. 10 NATIONAL CHENG KUNG UNIVERSITY - 2013................................................................................................................................ 12 VINDICATOR III SIDE BY SIDE STUDY – 2013.................................................................................................................................. 14 SUMMARY .................................................................................................................................................................................. 16 CREDITS & ACKNOWLEDGMENTS................................................................................................................................................. 17 CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 3 Executive Summary The WindSentinel™ is the world’s first commercially deployed floating LiDAR device, specifically developed by AXYS to support the offshore wind resource assessment sector. The WindSentinel offers the advantages of being considerably less expensive and easier to permit, deploy, and manage than conventional met masts offshore. The primary wind resource assessment sensor on the WindSentinel is the Vindicator®, the world’s only commercially available simultaneous pulse LiDAR with built-in motion compensation, giving the system a significant offshore advantage over conventional wind resource assessment LiDARs. As part of the roadmap to market acceptance of the WindSentinel, there have been a number of studies focused on the Vindicator LiDAR with regard to both its accuracy and the effectiveness of its built-in motion compensation. These tests have been conducted by AXYS, their clients and third party wind resource assessment consultants and provide clear evidence of the effectiveness of the WindSentinel system for the purpose of wind resource assessment offshore. In particular, the tests have shown: - Consistent R2 levels of 0.99 and higher when comparing the Vindicator with reference stations Accurate and precise wind direction measurements that meet industry standards Efficient motion compensation performance of the floating LiDAR This Technical Update will summarize these studies and provide a comprehensive overview of the Vindicator. CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 4 The Vindicator – A Brief History The Vindicator technology was originally developed by Optical Air Data Systems (OADS) in the late 1990s. OADS is a high technology, award winning small business located in Manassas, Virginia, USA. Of special note is OADS’ expertise in the design and engineering of compact, rugged, all-fiber optic laser wind sensors. OADS has developed this sensor technology over the past two decades and this has lead to the prototyping and manufacturing of high accuracy low speed air speed sensor systems for helicopter applications, commercial laser wind sensors for Utility Scale Wind Turbine control applications, as well as handheld wind sensors for a wide array of commercial and military applications. The Company currently holds over 27 patents in the fields of laser Doppler velocimetry and its applications. Figure 1 - Vindicator I The system that evolved into the Vindicator was originally used by helicopters to assist with landings in degraded visibility environments, which led to the development of the sensor durability and motion compensation capabilities demonstrated by the system today. In 2009 AXYS, seeking a suitable sensor for offshore wind resource assessment, entered into an exclusive arrangement to market the Vindicator for this purpose and commenced deployment of the first generation Vindicator. The core technology contained in this system is the same used today. In 2013, the Vindicator III was developed, leveraging OADS’ ongoing work with other applications of the sensor to introduce a new form factor, including the air blade lens cleaning technology. Figure 2 - Vindicator III As can be seen below, OADS has continued to support ongoing refinement of the Vindicator and remain committed to developing new applications to support the continuing evolution of the offshore wind resource assessment sector. CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 5 Race Rocks – 2009 The Race Rocks trial, which ran for a month in October/November of 2009, was the world’s first validation of a floating LiDAR system. Intended as a proof of concept for the WindSentinel, the trial deployed a floating Vindicator compared to the same sensor on a fixed platform onshore. The trial was a successful validation of the system and, most important, confirmed the effectiveness of the motion compensation feature of the Vindicator. Figure 3 - WindSentinel buoy deployed at Race Rocks Location System tested Reference system Distance between sensors Summary of results Race Rocks, approximately 20 miles south west of Victoria, BC in the Juan de Fuca Strait. Vindicator I Vindicator I 700 metres “the buoy mean wind speed agreed within 2% of the reference LiDAR measurements” - GLGarrad Hassan paper - EWEA March 2011 CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 6 Sample Data Table 1 - Race Rocks Wind Speed Correlation Data CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 7 DTU Høvsøre - 2013 A three month validation study at DTU’s Høvsøre testing facility commenced in mid-March 2013 and ended in early May. Interim results from the study have been produced and a second phase of the study will be completed in early 2014. Figure 4 - Vindicator III installed in WindSentinel Land Station at Høvsøre Location System tested Reference system Distance between sensors Summary of results Høvsøre, Denmark Vindicator III Høvsøre met mast 11m The Vindicator demonstrated a high level of data availability, good quality wind direction data and wind speed R2 of 0.99 and higher CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 8 Sample Data » 60m Test Availability [%] Gain [-] Offset [m/s] R2 [-] Absolute mean deviation [m/s] Standard deviation of deviation [m/s] » 80m Test Availability [%] Gain [-] Offset [m/s] R2 [-] Absolute mean deviation [m/s] Standard deviation of deviation [m/s] » Value 90 1.007 0.150 0.992 0.212 0.228 Value 93 0.990 0.149 0.992 0.110 0.251 100m Test Availability [%] Gain [-] Offset [m/s] R2 [-] Absolute mean deviation [m/s] Standard deviation of deviation [m/s] Value 92 1.003 0.056 0.990 0.035 0.318 CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 9 Fishermen’s Energy of New Jersey – 2013 The Fishermen’s Energy WindSentinel was launched in early 2012, the second commercial deployment of the system. From midMarch to mid-May 2013, Fishermen’s ran a system validation campaign against a shore-based WindCube under the direction of GLGarrad Hassan. Figure 5 - WindSentinel deployed off Atlantic City Location System tested Reference system Distance between sensors Summary of results Off the coast of Atlantic City, New Jersey Vindicator I WindCube v2 830m The WindSentinel wind speeds showed a good degree of correlation given the distance between the two sensors and the complexity of the terrain for the study. In their report on the study GL-Garrad Hassan stated: - “No significant sensitivity to pitch and roll motions was observed….this result is indicative of an efficient motion compensation performance of the floating LiDAR.” - “The WindSentinel provided accurate and precise wind direction measurements which are deemed to be compliant with industry standards.” CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 10 Sample Data Table 2 - Fishermen's Energy Wind Speed Correlation Data CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 11 National Cheng Kung University - 2013 National Cheng Kung University took delivery of their WindSentinel in late May with the intention of using the system as part of the Taiwanese government’s long-term plan for offshore wind power. In October 2013 the University ran a comparison study between their WindSentinel Vindicator III docked offshore with an onshore WindCube owned by the Taiwan Ocean Research Institute. Figure 6 - WindSentinel deployed in Tainan Location System tested Reference system Distance between sensors Summary of results Figure 7 - Location of WindSentinel buoy and WindCube Tainan, Taiwan Vindicator III WindCube V2 300m Given the distance and the complex terrain (the test location has a number of high buildings) the systems showed good correlation with an R2 of around 0.98 CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 12 Sample Data Table 3 - NCKU Wind Speed Correlation Data CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 13 Vindicator III Side by Side Study – 2013 In 2013 the US Navy purchased two Vindicators and a WindSentinel as part of a project intended to establish the degree of uncertainty between a fixed and floating LiDAR system. As an initial step in this study, the two Vindicators have been run side by side on the roof of AXYS’ facility to establish a baseline uncertainty measurement. Figure 8 - Vindicators on AXYS rooftop testing facility Location System tested Reference system Distance between sensors Summary of results AXYS facility, Sidney BC, Canada. Vindicator III Vindicator III Side by side Both wind speed and direction show good correlation with high levels of data availability. The wind speed R2 showed 0.99 CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 14 Sample Data Table 4 - Side by Side Wind Speed Correlation Data CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 15 Summary The WindSentinel has now completed a range of studies designed to establish the effectiveness of the system for offshore wind resource assessment. These studies, (more than for any comparable system available in the market), have demonstrated: - Consistent R2 levels of 0.99 and higher when comparing the Vindicator with reference stations - Accurate and precise wind direction measurements that meet industry standards - Efficient motion compensation performance of the floating LiDAR Future studies planned for the system include: - A Vindicator III unit will be sent to DTU Høvsøre in early 2014 to complete phase two of the study at that location. - The US Navy will deploy their WindSentinel early in 2014 and run a comparison between this system and a WindSentinel LandStation deployed on an oil rig to establish the degree of uncertainty between the two systems. This study is being undertaken under the guidance of DNV GL. - NCKU plan to deploy their WindSentinel next to an offshore mast for further validation in 2014. Additional studies are also currently underway and their results will be published as soon as they are available. CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 16 Credits & Acknowledgments AXYS would like to thank our clients for their ongoing support of the WindSentinel system. In particular we would like to thank the following for their support of this paper: - Fishermen’s Energy of New Jersey National Cheng Kung University We would also like to thank the following 3rd party wind resource assessment consultants for their input and feedback: - DNV GL (including the employees of GL- Garrad Hassan) Oldbaum Services CONFIDENTIAL This document and any data disclosed therein is the property of AXYS Technologies Inc. and constitutes and contains proprietary information. Neither receipt nor possession of this document confers or transfers a right to duplicate or disclose any information contained herein, except as expressly authorized in writing by AXYS Technologies Inc. 17
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