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Dynamic Analysis of Power Systems Equipped with Static Synchronous Compensators: A Review of Operation and Stability Indicators
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Abozar Asadi *1   , Ghazanfar Shahgholian2 , Mahnaz Hashemi2 |
1- Najafabad Branch, Islamic Azad University & Smart Microgrid Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran , aboooozarasadi@gmail.com
2- Najafabad Branch, Islamic Azad University & Smart Microgrid Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran, Najafabad Branch, Islamic Azad University |
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Abstract: (7 Views) |
In the face of the transition of power grids towards renewable energy sources-based structures and the increase in the density of nonlinear loads, maintaining dynamic stability and voltage profile has become one of the main operational challenges. Static synchronous compensators (STATCOMs), as one of the most efficient devices in flexible alternating current transmission systems (FACTSs), play a key role in voltage support and transient response improvement. However, despite their widespread use, the quantitative and systematic evaluation of the dynamic performance of these devices in modern complex networks remains a challenge. Most of the existing studies have focused on the design of control strategies, and the lack of a reference framework for defining and analyzing tangible operational indicators makes it difficult to compare the effectiveness and evaluate the actual performance of STATCOMs. Aiming to fill this gap, the present paper provides a comprehensive review of the dynamic analysis of STATCOM-equipped power systems with a special emphasis on operational indicators. This study classifies and analyzes the evaluation indicators into four main categories: (1) voltage stability indicators (including recovery time, voltage dip depth, and stability margin), (2) reactive power performance indicators (response rate, converter saturation, and capacity utilization), (3) electromechanical oscillation damping indicators, and (4) power quality and harmonics indicators. This paper analyzes the relationship between control structures (such as conventional PI controls, advanced adaptive controls, and virtual synchronous generator (VSG)-based controls) and utilization indicators, and analyzes how network variables affect the transient response of the equipment. The findings of this study provide a quantitative and practical basis for operation experts and power system designers to evaluate the performance of STATCOMs under different network conditions and optimize their control strategies to increase system reliability and stability using the proposed criteria.
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| Keywords: dynamic analysis, flexible alternating current transmission systems, operating indicators, static synchronous compensator, transient response, voltage stability |
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Type of Study: Review article |
Subject:
Special
Received: 2026/08/22 | Accepted: 2026/10/2
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| * Corresponding Author Address: Najafabad Branch, Islamic Azad University |
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