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Transient Voltage Stability Enhancement Using Fuzzy Logic Controller Techniques *

Authors: Dr. Majli Nema Hawas ** --- Abdullah Yaseen Abbas **
Journal: IRAQI JOURNAL OF COMPUTERS,COMMUNICATION AND CONTROL & SYSTEMS ENGINEERING المجلة العراقية لهندسة الحاسبات والاتصالات والسيطرة والنظم ISSN: 18119212 Year: 2012 Volume: 12 Issue: 2 Pages: 16-27
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Abstract: This paper discusses the transient voltage stability of a synchronous generator at its bus in a power system with a detailed transient modeling for the generator after being subjected to a three phase fault, and designing a Takagi-Sugeno first order fuzzy logic controller with center of area defuzzification algorithm as a fuzzy logic controller based exciter to stabilize the terminal voltage and to damp its oscillations so as to keep the generator under balanced working conditions. The proposed exciter can be easily modified by changing the steady state field voltage value to be applied to any other synchronous generator. This paper also used the integral of square error as an indicator of the terminal voltage stability and monitored all of the generator variables specially the rotor angle to see whether the generator will maintain synchronism or not after the occurrence of the fault.

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