طراحی و شبیه سازی همزمان کنترل کننده های پایدارساز سیستم قدرت سینرجتیک و خازن سری کنترل شده با تریستور در سیستم قدرت چند ماشینه
محورهای موضوعی : انرژی های تجدیدپذیر
1 - دانشجوی دکتری، دانشکده فنی مهندسی، دانشگاه شهرکرد، شهرکرد ایران
کلید واژه: پایداری, پایدارساز سیستم قدرت بهینه شده با الگوریتم ژنتیک (GAPSS), پایدارساز سیستم قدرت سینرجتیک (SPSS), تریستور کنترل شده با خازن سری (TCSC), کنترل سینرجتیک,
چکیده مقاله :
پایدارسازهای سیستم قدرت (PSSs) به طور معمول برای میراسازی گشتاور ژنراتور سنکرون استفاده می‌شوند تا به وسیله‌ی تولید سیگنال‌های کنترل تکمیلی برای سیستم تحریک ژنراتور، این نوسانات را کاهش دهند.در این مقاله به منظور میراسازی نوسانات الکترومکانیکی و غلبه بر مشکلات حاصل از تقریب خطی سیستم غیرخطی که پایداری سیستم را در یک همسایگی از شرایط تعادل محدود میکند، از یک پایدارساز سیستم قدرت غیرخطی مبنی بر تئوری کنترل سینرجتیک و کنترل کننده خازن سری کنترل شده با تریستور (TCSC) به طور همزمان استفاده شده است. ترکیب سینرجتیک پایدارساز سیستم قدرت کاملا بر اساس یک مدل غیرخطی ساده شده ی سیستم ارائه می گردد. برای بررسی تاثیرگذاری همزمان این کنترل کننده ها شبیه سازی در سیستم های قدرت تک ماشینه و چند ماشینه و تحت اغتشاشات مختلف مورد مطالعه قرار گرفته است. نتایج شبیه‌سازی نشان می‌دهد که عملکرد همزمان TCSC و پایدارساز سیستم قدرت سینرجتیک (SPSS) ظرفیت بسیار بالایی را برای میرایی نوسانات و بهبود پایداری در مقایسه با پایدارساز سیستم قدرت سینرجتیک و سیستم قدرت مجهز به PSS مرسوم تنظیم شده با الگوریتم ژنتیک (GAPSS) در هر سیستم قدرت دینامیکی غیرخطی از خود نشان می‌دهد.
Power system stabilizers (PSSs) are usually utilized for damping synchronous generator torque in order to reduce these oscillations by producing complementary control signals for the generator excitation system.In this study, we used a non-linear power system stabilizer based on synergetic control theory and a thyristor-controller series capacitor (TCSC) simultaneously in order to damp electromechanical oscillations and overcome the problems of linear approximation in a non-linear system which limits system stability in a neighborhood of equilibrium. The proposed synergetic combination of power system stabilizers is completely based on a simplified non-linear model of the system. In order to examine the simultaneous effect of these controllers, we investigated the simulation in single- and multi-machine power systems under various turbulences. Simulation results indicated that the simultaneous performance of TCSC and the synergetic power system stabilizer (SPSS) show a high capacity for damping oscillations and improving stability as compared with SPSS and PSS tuned with genetic algorithm (GAPSS) in any non-linear dynamic power system.
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