This readme file was generated on 2025-03-12 by LARS-JOHAN SANDSTRÖM GENERAL INFORMATION Title of Dataset: Hydropower Turbine Friction Monitoring Dataset (Version 1) Author/Principal Investigator Information Name: Lars-Johan Sandström ORCID: 0009-0002-0924-9104 Institution: Luleå University of Technology Email: lars-johan.sandstrom@ltu.se Associate or Co-investigator Information Name: Kim Berglund ORCID: 0000-0002-8533-897X Institution: Luleå University of Technology Email: kim.berglund@ltu.se Associate or Co-investigator Information Name: Pär Marklund ORCID:0000-0003-3157-4632 Institution: Luleå University of Technology Email: par.marklund@ltu.se Associate or Co-investigator Information Name: Gregory F. Simmons ORCID: 0000-0002-5591-9343 Institution: Fortum Sverige AB Email: gregory.simmons@fortum.com Date of data collection: Between 2022 and 2024 Geographic location of data collection: Sweden SHARING/ACCESS INFORMATION Licenses/restrictions placed on the data: CC-BY Links to publications that cite or use the data: Recommended citation for this dataset: Sandström, L.-J., Berglund, K., Marklund, P., & Simmons, G. F. (2025). Hydropower Turbine Friction Monitoring Dataset (Version 1) [Dataset]. Luleå University of Technology. Available at: https://doi.org/10.5878/4q73-hp36 DATA & FILE OVERVIEW File List: Turbine_1.csv, Turbine_2.csv METHODOLOGICAL INFORMATION The datasets contain pressure and temperature signals from the hydraulic systems of two different Kaplan turbines. The variables can be connected to the forces required to regulate the runner blades on the turbines. The datasets can therefore be used to monitor the friction in the bearings that enable the movement of the runner blades. These bearings are located in the hub of the Kaplan turbines. The datasets are also labeled with information on whether glycerol is present in the systems for lubrication. The sampling frequency is 1 sample per minute. Each feature includes an average, minimum, and maximum value, which correspond to the statistics during that minute from the sampling as the sampling frequency in the SCADA system is higher than 1 sample per minute. Certain details, such as units and turbine-specific information, have been intentionally omitted due to unavailability or confidentiality. Methods for processing the data: Rows with missing entries have been removed. The time format has been changed to duration in days. No other preprocessing is done. People involved with sample collection, processing, analysis and/or submission: The sample collection is done by Gregory F. Simmons, and the preprocessing, analysis, and submission are made by Lars-Johan Sandström. DATA-SPECIFIC INFORMATION FOR: Turbine_1.csv Number of variables: 11 Number of cases/rows: 814512 Variable List: Time - Time in days p_closeAvg - Average pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_closeMin - Minimum pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_closeMax - Maximum pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_openAvg - Average pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. p_openMin - Minimum pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. p_openMax - Maximum pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. t_oilAvg - Average oil temperature in the hydraulic system during 1 minute of sampling. t_oilMin - Minimum oil temperature in the hydraulic system during 1 minute of sampling. t_oilMax - Maximum oil temperature in the hydraulic system during 1 minute of sampling. Glycerol - Logical value that says when Glycerol is present in the system. 0 = No glycerol. 1 = Glycerol. DATA-SPECIFIC INFORMATION FOR: Turbine_2.csv Number of variables: 11 Number of cases/rows: 1052493 Variable List: Time - Time in days p_closeAvg - Average pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_closeMin - Minimum pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_closeMax - Maximum pressure on the closing side of the hydraulic cylinder during 1 minute of sampling. p_openAvg - Average pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. p_openMin - Minimum pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. p_openMax - Maximum pressure on the opening side of the hydraulic cylinder during 1 minute of sampling. p_sysAvg - Average hydraulic system pressure during 1 minute of sampling. p_sysMin - Minimum hydraulic system pressure during 1 minute of sampling. p_sysMax - Maximum hydraulic system pressure during 1 minute of sampling. Glycerol - Logical value that says when Glycerol is present in the system. 0 = No glycerol. 1 = Glycerol.