Frequency Regulation of a Hybrid Wind–Hydro Power Plant in an Isolated Power System

Guillermo Martínez-Lucas, José Ignacio Sarasúa and José Ángel Sánchez-Fernández
Additional contact information
Guillermo Martínez-Lucas: Department of Hydraulic, Energy and Environmental Engineering, Universidad Politécnica de Madrid, C/Profesor Aranguren, 28040 Madrid, Spain
José Ignacio Sarasúa: Department of Hydraulic, Energy and Environmental Engineering, Universidad Politécnica de Madrid, C/Profesor Aranguren, 28040 Madrid, Spain
José Ángel Sánchez-Fernández: Department of Hydraulic, Energy and Environmental Engineering, Universidad Politécnica de Madrid, C/Profesor Aranguren, 28040 Madrid, Spain

Energies, 2018, vol. 11, issue 1, 1-25

Abstract: Currently, some small islands with high wind potential are trying to reduce the environmental and economic impact of fossil fuels by using renewable resources. Nevertheless, the characteristics of these renewable resources negatively affect the quality of the electrical energy, causing frequency disturbances, especially in isolated systems. In this study, the combined contribution to frequency regulation of variable speed wind turbines (VSWT) and a pump storage hydropower plant (PSHP) is analyzed. Different control strategies, using the kinetic energy stored in the VSWT, are studied: inertial, proportional, and their combination. In general, the gains of the VSWT controller for interconnected systems proposed in the literature are not adequate for isolated systems. Therefore, a methodology to adjust the controllers, based on exhaustive searches, is proposed for each of the control strategies. The control strategies and methodology have been applied to a hybrid wind–hydro power plant on El Hierro Island in the Canary archipelago. At present, in this isolated power system, frequency regulation is only provided by the PSHP and diesel generators. The improvements in the quality of frequency regulation, including the VSWT contribution, have been proven based on simulating different events related to wind speed, or variations in the power demand.

Keywords: wind–hydro systems; variable speed wind turbine; governor tuning; wind turbine frequency regulation; inertia emulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/1/239/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/1/239/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:1:p:239-:d:127815

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().