Eigen Analysis of Wind-Hydro Joint Frequency Regulation in an Isolated Power System

Martínez de Lucas, Guillermo and Sarasúa Moreno, José Ignacio and Sánchez Fernández, José Ángel (2018). Eigen Analysis of Wind-Hydro Joint Frequency Regulation in an Isolated Power System. "International Journal of Electrical Power and Energy Systems", v. 103 ; pp. 511-524. ISSN 0142-0615. https://doi.org/10.1016/j.ijepes.2018.06.028.

Description

Title: Eigen Analysis of Wind-Hydro Joint Frequency Regulation in an Isolated Power System
Author/s:
  • Martínez de Lucas, Guillermo
  • Sarasúa Moreno, José Ignacio
  • Sánchez Fernández, José Ángel
Item Type: Article
Título de Revista/Publicación: International Journal of Electrical Power and Energy Systems
Date: December 2018
ISSN: 0142-0615
Volume: 103
Subjects:
Freetext Keywords: Hybrid Wind–Hydro Power Plant, Turbine Governor, Variable-Speed Wind Turbine, Synthetic Inertia, Modal Analysis, Eigenvalues
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica, Energía y Medio Ambiente
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The wind energy penetration rate is being increased in majority of European countries. However, a high penetration rate could endanger the stability of power systems, particularly in small islands. Hydropower plays an important role in the regulation and control of isolated power systems with renewable sources, but it may not be able to maintain the frequency within grid requirements. This is the case of El Hierro power system (Canary archipelago), where a hybrid wind-pumped storage hydropower plant (PSHP) was committed to reduce the use of fossil fuels. Currently, frequency regulation is only provided by the PSHP and diesel generators. Therefore, it is proposed that variable-speed wind turbines (VSWTs) contribute to frequency regulation, thereby minimizing the need for fossil fuels. This study aims to conduct an analysis on the effect of the VSWT contribution to frequency regulation in the power system of El Hierro. It is based on classical control tools from a linearized mathematical model considering different VSWT regulation strategies. The eigenvalues, damping ratio, and participation factors of the state variables have been obtained. The more significant oscillation modes in the dynamic response of the system have been identified. According to this modal analysis, a methodology for the adjustment of the PSHP and VSWT controller gains is proposed. An improvement in the quality of frequency regulation while maintaining the El Hierro system frequency within grid requirements has been proved based on simulating different events related to wind speed or variations in the power demand, using a nonlinear model of the combined wind?hydro power plant.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainENE2016-77951-RMINECOUnspecifiedVALOR DEL ALMACENAMIENTO POR BOMBEO EN SISTEMAS ELÉCTRICOS AISLADOS CON FUERTE PENETRACIÓN EÓLICA

More information

Item ID: 51297
DC Identifier: http://oa.upm.es/51297/
OAI Identifier: oai:oa.upm.es:51297
DOI: 10.1016/j.ijepes.2018.06.028
Official URL: https://www.sciencedirect.com/science/article/pii/S0142061518311803
Deposited by: Memoria Investigacion
Deposited on: 18 Jun 2018 14:56
Last Modified: 19 Jun 2018 10:37
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