Affiliation:
1. Research Group PAIDI-TIC-168, Department of Automation Engineering, Electronics, Architecture and Computers Networks, Doctoral School, University of Cádiz, E-11202 Algeciras, Spain
Abstract
One of the challenges posed by renewable energies is the stabilization of parameters related to the quality of electrical energy. This study demonstrates the existence of a relationship between input blocks of hydropower and the variation of the fundamental frequency of the electricity grid. By mapping production data provided by the Spanish Electric Network with frequency measured in the laboratory, it is shown that gradients of hydropower are correlated with frequency fluctuations for certain characteristic times. Considering hourly instances of energy input, the study compares two methods for calculating hydropower gradients (linear regression and pseudo-linear regression) and two methods for calculating local frequency extrema (the “specular inertia” method and analysis by comparison with the moving average) in order to corroborate the results.
Funder
Spanish Ministry of Science and Education
European Union
Andalusian-FEDER project
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference12 articles.
1. Alhelou, H.H., Hamedani-Golshan, M.E., Njenda, T.C., and Siano, P. (2019). A survey on power system blackout and cascading events: Research motivations and challenges. Energies, 12.
2. Eurelectric-European Network of Transmission System Operators for Electricity (ENTSO-E) (2023, February 02). Deterministic Frequency Deviations-Root Causes and Proposals for Potential Solutions. Available online: https://eepublicdownloads.entsoe.eu/clean-documents/pre2015/publications/entsoe/120222_Deterministic_Frequency_Deviations_joint_ENTSOE_Eurelectric_Report__Final_.pdf.
3. (2020). Characteristics of Supplied Voltage in General Distribution Networks (Standard No. UNE-EN 50160:2011/A2:2020).
4. The role of renewable energy in the global energy transformation;Gielen;Energy Strategy Rev.,2019
5. Impact of high penetration of renewable energy sources on grid frequency behaviour;Saha;Int. J. Electr. Power Energy Syst.,2023