Next Generation RivGen Power System: Kvichak River, AK Overwinter Ice Study

Description

The University of Alaska Fairbanks (UAF) Alaska Hydrokinetic Energy Research Center was tasked with developing a real-time data telemetry / remote power generation system to monitor frazil ice conditions in the Kvichak River in support of the U.S. Department of Energy funded "Next Generation MHK River Power System Optimized for Performance, Durability and Survivability" project. A real-time telemetry system was requested because of the short time span between the end of the frazil ice season when the instruments would be recovered, limited vessel availability and the project end-date. To meet the project objectives, UAF designed and assembled a remote power/real-time data telemetry system that included an auto start propane generator, a small PV array, a small battery bank and line-of-sight radios as well as two sonar systems to monitor river velocity and water column acoustic backscatter strength. Both sonars included internal batteries for powering the instruments in case of failure of the shore based power system. The sonars, deployed in ~5 m of water on the bed of the Kvichak River, adjacent to the Village of Igiugig, Alaska were tethered to shore via a waterproof armored cable that conveyed power to the subsurface instruments and data from the instruments to the shore based telemetry system. The instruments were programmed to record data internally as well as to transmit data serially over the cables to the shore based system. The system was in-place between November, 2016 and June, 2017. While the real-time data telemetry system was not successful and the remote power generation power system was only partially successful, the system design included sufficient redundant power in the form of internal instrument batteries to enable the collection of nearly three months of overlapping velocity and backscatter data (from November through February) and a record of acoustic backscatter strength spanning the entire ~150 day frazil ice season between November, 2016 and ~April, 2017. This submission includes the overwinter ice study plan, dataset, and final report. The dataset includes modeled water velocity, discharge, and measured water velocity and acoustic backscatter strength in winter 2016-17 from the Kvichak River at the Village of Igiugig, Alaska, USA.

Resources

Name Format Description Link
33 Report on overwinter in water ice study in the Kvichak River, Igiugig. https://mhkdr.openei.org/files/235/UAF%20Kasper%20Frazil%20Ice%20Report_2017.pdf
57 Raw data sets for 2017 ice monitoring for Kvichak River. Includes ADCP data files and SWIP data file https://mhkdr.openei.org/files/235/Raw%20Data-20171004T163234Z-001.zip
33 System requirements analysis to inform ice study design, study plan and equipment, and deployment plan for over winter data collection https://mhkdr.openei.org/files/235/EE0007348_IVC%20River%20Ice%20Study%20Plan_M2.pdf
33 This document adds more information on the data itself, how the data was collected, links to software, and file details. https://mhkdr.openei.org/files/235/FINAL%20METHODS%20PDF%20Igiugig%20MHKDR%20Submission%20V2%20%281%29.pdf
57 Processed dataset including: 20 year daily average modeled velocity and discharge from 1967-1987, measured velocity from Nov 2016 - Feb 2017, and a figure showing the regression model. https://mhkdr.openei.org/files/235/Kvichak%20River%20Ice%20Monitoring%20-%20Modeled%20V%20Q.zip

Tags

  • environment
  • real-time
  • cec
  • alaska
  • kvichak-river
  • data-collection
  • rivgen
  • hydrokinetic
  • telemetry
  • conditions
  • cross-flow-turbine
  • performance
  • profiler
  • ea
  • study
  • adcp
  • axial
  • mhk
  • equipment
  • river
  • swip
  • system
  • fiberglass-tripod
  • study-plan
  • frazil
  • turbine
  • plan
  • remote
  • doppler
  • marine
  • axis
  • monitoring
  • sea-spider
  • power
  • igiugig
  • current
  • acoustic
  • acoustic-doppler-current-profiler
  • survivability
  • bottom-mounted
  • horizontal
  • ice
  • winter
  • durability
  • energy
  • shallow
  • ak

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