HERO WEC 2024 Electrical Configuration Deployment Data

The following submission includes raw and processed data from the in water deployment of NREL's Hydraulic and Electric Reverse Osmosis Wave Energy Converter (HERO WEC), in the form of parquet files, TDMS files, CSV files, bag files, and MATLAB workspaces. This dataset was collected in April 2024 at the Jennette's pier test site in North Carolina. This submission includes the following:
- Data description document (HERO WEC FY24 Electric Deployment Data Descriptions.doc) - This document includes detailed descriptions of the type of data and how it was processed and/or calculated.
- Processed MATLAB workspaces - The processed data is provided in the form of MATLAB workspaces each containing data from a 30-minute interval. The MATLAB workspaces have been separated into zip files corresponding to each subsystem of the HERO WEC. The available zip files are:
- WEC_Data_Workspaces - the measurements that are physically mounted on the WEC and all applicable calculated values.
- Gen_Data_Workspaces - The voltage and current measurements from the generator (measured on-shore) and all applicable calculated values.
- PE_Data_Workspaces - The measurements taken within the onshore power electronics enclosure and all applicable calculated values.
- RO_Data_Workspaces - The measurements taken within the onshore reverse osmosis subsystem and all applicable calculated values.
- MATLAB visualization scripts - The MATLAB workspaces can be visualized using the file "HERO_WEC_2024_Electric_Config_Data_Viewer.m/mlx". The user simply needs to download the workspace(s) of interest, specify the desired start time and subsystem(s) to plot data from, and run this file. Both the .m and .mlx file format has been provided depending on the user's preference.
- Summary Data - The fully processed data was used to create a summary data set with averages and important calculations performed on 30-minute intervals to align with the intervals of wave resource data reported from nearby CDIP ocean observing buoys located 20km East of Jennette's pier and 40km Northeast of Jennette's pier. The wave resource data provided in this data set is to be used for reference only due the difference in water depth and proximity to shore between the Jennette's pier test site and the locations of the ocean observing buoys. This data is provided in the Summary Data zip folder, which includes this data set in the form of a MATLAB workspace, parquet file, and excel spreadsheet.
- Processed Parquet Files - The processed data is provided in the form of parquet files. Each parquet file contains data from a 30-minute interval. The parquet files have been separated into zip files corresponding to each subsystem of the HERO WEC. The available zip files are:
- WEC_Data_Parquet - the measurements that are physically mounted on the WEC and all applicable calculated values.
- Gen_Data_Parquet - The voltage and current measurements from the generator (measured on-shore) and all applicable calculated values.
- PE_Data_Parquet - The measurements taken within the onshore power electronics enclosure and all applicable calculated values.
- RO_Data_Parquet - The measurements taken within the onshore reverse osmosis subsystem and all applicable calculated values.
- Interim Filtered Data - Raw data from each sensor group partitioned into 30-minute parquet files. These files are outputs from an intermediate stage of data processing and contain the raw data with no Quality Control (QC) or calculations performed in a format that is easier to use than the raw data.
- Raw Data - Raw, unprocessed data from this deployment can be found in the Raw Data zip folder. This data is provided in the form of TDMS, CSV, and bag files in the original format output by the MODAQ system.
- Python Data Processing Script - This links to an NREL public github repository containing the python script used to go from raw data to fully processed parquet files. Additional documentation on how to use this script is included in the github repository.

This data set has been developed by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Water Power Technologies Office.