ESTRATEGIAS DE CONTROL DE CONVERTIDORES GRID FORMING Y PLANTAS FOTOVOLTAICAS PARA SU INTEGRACION EN LA RED ELECTRICA
PID2022-142179OB-I00
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Nombre agencia financiadora Agencia Estatal de Investigación
Acrónimo agencia financiadora AEI
Programa Programa Estatal para Impulsar la Investigación Científico-Técnica y su Transferencia
Subprograma Subprograma Estatal de Generación de Conocimiento
Convocatoria Proyectos de I+D+I (Generación de Conocimiento y Retos Investigación)
Año convocatoria 2022
Unidad de gestión Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023
Centro beneficiario UNIVERSIDAD PUBLICA DE NAVARRA
Identificador persistente http://dx.doi.org/10.13039/501100011033
Publicaciones
Resultados totales (Incluyendo duplicados): 4
Encontrada(s) 1 página(s)
Encontrada(s) 1 página(s)
Dynamic analysis of the conductance-frequency droop control during current limitation
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Urtasun Erburu, Andoni
- Erdocia Zabala, Ioseba
- Marroyo Palomo, Luis
In inverter-based stand-alone microgrids, the P-f and O-V droop methods are frequently used to keep control of the microgrid voltage. However, in the presence of overloads or short-circuits, in which the inverter must perform a current- limiting strategy, the P-f droop becomes prone to transient instability. In order to remain stable under any possible overload or fault, the conductance-frequency $({G-f})$ droop is a promising alternative, however no analysis about its dynamic response has been carried out so far. This paper proposes a small-signal model of the system during current limitation, proving that the ${G-f}$ droop is also superior to the existing droop methods in terms of rapidity. Simulation results validate the theoretical analysis., This work is part of the project PID2022-142179OB-I00, funded by the Spanish State Research Agency. It was also supported by the Public University of Navarre under project PJUPNA2024-11695
Integration of wind and PV power in the spanish electric system using existing hydroelectric power
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Garwa, Asheem
- Pascual Miqueleiz, Julio María
- Marroyo Palomo, Luis
This paper analyses the potential reduction of electric energy generated with fossil fuels with 40 GW of PV power and 40 GW of wind power in the existing Spanish electric system and its integration by making use of existing hydroelectric power and reserves with different levels of flexibility. We use 10-minute data for 2 years and we firstly assume that hydro power remains the same as originally, observing an already high reduction in fossil fuel use in the electric mix. Then we increasingly allow more flexibility in hydro power use, i.e., we allow to use hydro reserves with different time horizons, and we analyze the incremental reduction in fossil fuel generation as we increase this flexibility. We observe that we can obtain notable gains in terms of fossil fuel reduction when increasing flexibility just slightly showing how hydro power can integrate large amounts of variable renewable energy in Spain with only a small change in the reserves profile., This project has received funding from the European Union´s H2020 research and innovation programme under Maria Sklodowska-Curie grant agreement No 101034285. Additionally, this work has been supported by the Spanish State Research Agency (AEI) and ERDF-UE under grants PID2022-142179OB-I00 and PID2022-139914OB-I00.
Analysis of the active inertia power provided by grid-forming strategies during a RoCoF
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Urtasun Salinas, Ibai
- Urtasun Erburu, Andoni
- Bautista Portillo, Guillermo Antonio
- Marroyo Palomo, Luis
Publicado 2024-08-30, Power electronic-based generators are becoming increasingly prevalent in the electrical grid, necessitating their support in disturbances previously handled only by synchronous generators. One of the tests proposed by regulations is to evaluate the response of grid-forming inverters to a Rate of Change of Frequency (RoCoF). However, there is no detailed analysis of the effect of control parameters on the active inertia power. This article presents the temporal response equation of an inverter subject to a RoCoF and introduces the concept of equivalent inertia showing that it also depends on the damping factor. Thanks to this analysis and the flexibility of inverters, the parameter design of existing grid-forming strategies is proposed to achieve the desired active inertia power and system damping ratio. Theoretical analysis and control strategies have been validated by simulation., This work is part of the project PID2022-142179OB-I00, funded by Spanish State Research Agency. It was also supported by the Public University of Navarre under project PJUPNA2024-11695 and through a PhD scholarship.
Gain of bifacial PV modules on horizontal single-axis trackers in desert climates
Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
- Parra Laita, Íñigo de la
- García Solano, Miguel
- Marcos Álvarez, Javier
- Marroyo Palomo, Luis
Over the last few years, the demand for bifacial PV modules has continuously increased. However, there are still some aspects regarding their outdoor performance under real conditions that need further investigation. This paper analyzes the bifacial PV modules gain obtained over one year in a horizontally tracked PV power plant located in the Atacama Desert, Chile. The study was carried out over the course of a year for two different types of trackers: a standard tracker as used in the rest of the plant and a tracker that, according to the manufacturer, is specially designed to maximize the production of the bifacial modules. The results show that bifacial PV modules with a conventional tracker are able to gain approximately a 5% in terms of both radiation and production whereas the bifacial PV modules mounted on the special bifacial tracker can gain up to 5.8% and 6.1 % respectively., This work has been supported by the Spanish State Research Agency (AEI) and ERDF-EU under grants PID2019-110816RB-C21 and PID2022-142179OB-I00. It has also been supported by the UPNA grant PJUPNA2023-11389.