A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters

This paper focuses on the methods that ensure the rotor angle stability of electric power systems, which is most frequently analyzed with small-signal models. Over the past several decades, power system stabilizers (PSSs) for conventional excitation systems were the main tools for improving the smal...

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Main Authors: Nikolay Nikolaev, Kiril Dimitrov, Yulian Rangelov
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/21/7372
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author Nikolay Nikolaev
Kiril Dimitrov
Yulian Rangelov
author_facet Nikolay Nikolaev
Kiril Dimitrov
Yulian Rangelov
author_sort Nikolay Nikolaev
collection DOAJ
description This paper focuses on the methods that ensure the rotor angle stability of electric power systems, which is most frequently analyzed with small-signal models. Over the past several decades, power system stabilizers (PSSs) for conventional excitation systems were the main tools for improving the small-signal stability of electromechanical oscillatory modes. In the last decade, power oscillation damping (POD) control implemented in photovoltaic (PV) inverters has been considered an alternative to PSSs. As PV generation undergoes massive rollout due to policy directions and renewable energy source integration activities, it could potentially be used as a source of damping, which is crucial for sustaining the rotor angle stability of the remaining in-service synchronous generators. Several studies have already been dedicated to the development of different damping strategies. This paper contributes to the existing research in power system stability by providing a comprehensive review of the effects of PV generation on small-signal stability, as well as the recent evolution of POD control through PV inverters. The features and impacts of the various ways to realize POD controllers are assessed and summarized in this paper. Currently, detailed information and discussions on the practical application of PV inverter PODs are not available. This paper is, thus, intended to initiate a relevant discussion and propose possible implementation approaches concerning the topic under study.
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spelling doaj.art-1118c9c5c5c6485e8131fd3fe5670b312023-11-22T20:46:46ZengMDPI AGEnergies1996-10732021-11-011421737210.3390/en14217372A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic InvertersNikolay Nikolaev0Kiril Dimitrov1Yulian Rangelov2Electric Power Engineering Department, Technical University of Varna, Studentska str. 1, 9010 Varna, BulgariaElectric Power Engineering Department, Technical University of Varna, Studentska str. 1, 9010 Varna, BulgariaElectric Power Engineering Department, Technical University of Varna, Studentska str. 1, 9010 Varna, BulgariaThis paper focuses on the methods that ensure the rotor angle stability of electric power systems, which is most frequently analyzed with small-signal models. Over the past several decades, power system stabilizers (PSSs) for conventional excitation systems were the main tools for improving the small-signal stability of electromechanical oscillatory modes. In the last decade, power oscillation damping (POD) control implemented in photovoltaic (PV) inverters has been considered an alternative to PSSs. As PV generation undergoes massive rollout due to policy directions and renewable energy source integration activities, it could potentially be used as a source of damping, which is crucial for sustaining the rotor angle stability of the remaining in-service synchronous generators. Several studies have already been dedicated to the development of different damping strategies. This paper contributes to the existing research in power system stability by providing a comprehensive review of the effects of PV generation on small-signal stability, as well as the recent evolution of POD control through PV inverters. The features and impacts of the various ways to realize POD controllers are assessed and summarized in this paper. Currently, detailed information and discussions on the practical application of PV inverter PODs are not available. This paper is, thus, intended to initiate a relevant discussion and propose possible implementation approaches concerning the topic under study.https://www.mdpi.com/1996-1073/14/21/7372power oscillation dampingsmall-signal stabilityphotovoltaic inverterelectromechanical oscillationvirtual synchronous generatormicrogrid
spellingShingle Nikolay Nikolaev
Kiril Dimitrov
Yulian Rangelov
A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
Energies
power oscillation damping
small-signal stability
photovoltaic inverter
electromechanical oscillation
virtual synchronous generator
microgrid
title A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
title_full A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
title_fullStr A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
title_full_unstemmed A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
title_short A Comprehensive Review of Small-Signal Stability and Power Oscillation Damping through Photovoltaic Inverters
title_sort comprehensive review of small signal stability and power oscillation damping through photovoltaic inverters
topic power oscillation damping
small-signal stability
photovoltaic inverter
electromechanical oscillation
virtual synchronous generator
microgrid
url https://www.mdpi.com/1996-1073/14/21/7372
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