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THE ANALYSIS OF THE EFFECT OF TİME DELAY ON STABILITY REGIONS IN AUTOMATIC VOLTAGE REGULATION SYSTEMS WİTH PI CONTROLLERS
Abstract
In electric power systems, changes in active and reactive power can cause fluctuations in terminal voltage, which may unfavorable system stability. Therefore, voltage stability is a crucial indicator for the reliable and efficient operation of power systems. This study investigates the impact of time delay on the stability regions of automatic voltage regulation systems with Proportional–Integral (PI) controllers. Time delay in electric power systems is a critical parameter that directly influences control performance and has significant impacts on system stability and transient response. Within this scope, a weighted geometric center-based approach is adopted using stability boundary locus for determining PI controller parameter values in time-delayed automatic voltage regulation systems. In the proposed approach, the stability boundaries are determined for various delay values, and the resulting changes in PI controller parameters are analyzed. Simulation results demonstrate that time delay shifts the stability boundaries and causes notable differences in transient behavior.
Keywords
Ethical Statement
Hazırlanan makalede etik kurul izni alınmasına gerek yoktur.
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Details
Primary Language
Turkish
Subjects
Electrical Energy Transmission, Networks and Systems , Electrical Energy Generation (Incl. Renewables, Excl. Photovoltaics) , Power Plants , High Voltage
Journal Section
Research Article
Authors
Yavuz Güler
*
0000-0003-3072-8978
Türkiye
Publication Date
December 3, 2025
Submission Date
May 9, 2025
Acceptance Date
October 27, 2025
Published in Issue
Year 1970 Volume: 28 Number: 4