Real-time simulation Model of Ultracapacitors for Frequency Stability Support from Wind Generation

Conference paper (2021)

Authors

C. Zhang Student
E. Rakhshani Intelligent Electrical Power Grids - EEMCS
Nidarshan Veerakumar Intelligent Electrical Power Grids - EEMCS
José L. Rueda Intelligent Electrical Power Grids - EEMCS
P. Palensky Intelligent Electrical Power Grids - EEMCS
Francisco Gonzalez-Longatt University of South-Eastern Norway
Research Group
Intelligent Electrical Power Grids (EEMCS) (TU Delft)
Copyright: © 2021 C. Zhang, E. Rakhshani, Nidarshan Veerakumar, José L. Rueda, P. Palensky, F. Gonzalez-Longatt
DOI: https://doi.org/10.1109/IECON48115.2021.9589558
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Published Date

2021

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Intelligent Electrical Power Grids

Abstract

The frequency stability of the power system is challenged by the high penetration of power electronic interfaced renewable energy sources (RES). Energy storage systems (ESS) are used to supply extra power injection to enhance the frequency stability during a disturbance. This paper presents a novel approach for improving the frequency dynamics by incorporating a designed ultracapacitor (UC) with a fully decoupled wind power generation (FDWG) unit. To this aim, a suitable model implementation of UC for real-time simulations is presented. The model constitutes a parallel RC branch, which is appropriate for illustrating the relevant fast UC dynamics that occur within the first milliseconds of the time period of action for fast active-power frequency control services. The frequency performance achieved by the support of the FDWG equipped with UC is compared against the performance achieved by using electrical batteries. The comparison includes the application of droop-derivative frequency control.

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