Use of supercapacitors for providing frequency-support in an island-mode microgrid

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Volumen 34-4
PDF (Spanish) MHT (Spanish)
Published : 2022-12-30
DOI : https://doi.org/10.37815/rte.v34n4.961
Keywords :
microgrid, supercapacitors, fast-frequency response, virtual inertia, energy storage system
Danny Ochoa
https://orcid.org/0000-0001-5633-1480
Edisson Villa
https://orcid.org/0000-0002-2766-5913
Vinicio Iñiguez
https://orcid.org/0000-0001-7494-191X
Ciro Larco
https://orcid.org/0000-0002-7801-1514
Rodrigo Sempertegui
https://orcid.org/0000-0002-0764-8657
Abstract

This article presents the practical implementation of a frequency control technique (virtual inertia) in an energy storage system based on supercapacitors (ESS-SC). The design of this proposal provides frequency support to a real isolated microgrid that integrates renewable generation sources (solar photovoltaic, 15 kWp), conventional synchronous generation (diesel thermal, 44 kVA), and energy storage systems (ESS-SC, 30 kW). The base case is a hybrid solar-diesel microgrid (typical situation of insular systems) operating in normal conditions. Frequency support tasks' effectiveness provided by the SAE-SC checks out, and the resilience of the microgrid are evaluated in terms of this variable. The experimental results show that the implementation of the proposal allows reducing the frequency fluctuations of the microgrid by 30%, representing a significant improvement in the quality of the electricity supply. The experiments were carried out in the Microgrid Laboratory of the Centro Científico, Tecnológico y de Investigación Balzay (CCTI-B) of the Universidad de Cuenca.

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How to Cite
Ochoa, D., Villa, E., Iñiguez, V., Larco, C., & Sempertegui, R. (2022). Use of supercapacitors for providing frequency-support in an island-mode microgrid. Revista Tecnológica - ESPOL, 34(4), 174-185. https://doi.org/10.37815/rte.v34n4.961
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Author Biography

Danny Ochoa

Es Ingeniero Eléctrico por la Universidad de Cuenca, Ecuador, desde 2011. En 2014, obtuvo el título de Máster Universitario en Ingeniería Eléctrica por la Universidad Politécnica de Madrid (UPM), España. Es Doctor en Ingeniería Eléctrica y Electrónica por la UPM desde 2019. Sus áreas de interés son: integración de aerogeneradores de velocidad variable a la red eléctrica, operación, control y servicios complementarios en sistemas eléctricos de potencia y microrredes

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