System Frequency Response Model Considering the Influence of Power System Stabilizers

Authors

Keywords:

system frequency response (SFR) model, power system stabilizers (PSS), frequency stability studies

Abstract

Frequency stability analysis of large power systems are extremely time consuming, laborious and may even exceed the computational capacity of modern computers. Hence, simplified power system models have being developed in the literature. These models are usually called System Frequency Response (SFR). In SFR models, generators are represented by transfer functions, nonlinearities are generally neglected and the grid is not taken into account. Conventional SFR models only contemplate the mechanical behavior of speed governors, turbines and synchronous machines of generators. This is because, a common simplification is to consider that frequency and voltage can be controlled independently. However, it is demonstrated that there is an interaction between them, so frequency can be affected by the effect of power system stabilizers (PSSs) over excitation system controllers. In this work, a modified SFR model is proposed, considering the influence of generators excitation control on frequency. Simulation results show an improvement of the accuracy in the estimation of frequency response of the power system.

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Author Biographies

Daniel Alejandro Leiva Roca, Instituto de Energía Eléctrica, Universidad Nacional de San Juan - CONICET

Daniel A. Leiva was born in San Juan, Argentina. He graduated as an Electronic Engineer from the National University of San Juan (UNSJ), Argentina in 2015. He is currently a PhD student in Electrical Engineering at UNSJ. His research interests include dynamics and control of electrical power systems, frequency stability, unconventional distributed generation systems, and power electronics.

Pedro Mercado, Instituto de Energía Eléctrica, Universidad Nacional de San Juan - CONICET

Pedro E. Mercado was born in San Juan, Argentina. He graduated as an Electromechanical Engineer from UNSJ. He received his PhD degree in Electrical Engineering from Aachen Technical University (RWTH Aachen), North Rhine-Westphalia, Germany. Dr. Mercado currently works at the Electrical Energy Institute (IEE) of the UNSJ-CONICET. He works as a CONICET Researcher, Associate Professor at UNSJ and IEE Consultant on electrical engineering issues. His research activities focus on dynamic simulation, operational safety, power electronics, renewable energy systems, and economic operation and control of electrical power systems.

Gastón Suvire, Instituto de Energía Eléctrica, Universidad Nacional de San Juan - CONICET

Gastón O. Suvire was born in San Juan, Argentina. He graduated as an Electrical Engineer from UNSJ in 2002 and obtained a PhD in Electrical Engineering from the same university in 2009. Part of the PhD was developed at the Federal University of Rio de Janeiro, Brazil. He carried out a research stay at the Pacific Northwest National Laboratory of the United States Energy Department in 2017. Currently, Dr. Suvire is professor at UNSJ and a CONICET researcher. His research interests include methods of simulation, dynamics and control of electrical systems, modeling and control of power electronics, wind generation, solar and energy storage in electrical systems.

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Published

2022-03-25

How to Cite

Leiva Roca, D. A., Mercado, P. ., & Suvire, G. . (2022). System Frequency Response Model Considering the Influence of Power System Stabilizers. IEEE Latin America Transactions, 20(6), 912–920. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/6249

Issue

Vol. 20 No. 6 (2022): Ordinary Issue

Section

Articles