دانلود رایگان مقاله انگیسی طراحی بهینه کنترلر PSS و SVC برای میرایی نوسانات با فرکانس کم (LFO)

Optimum Design of PSS and SVC Controller for Damping Low Frequency Oscillation (LFO)

سال انتشار : 2011

نوع مقاله : IEEE CONFERENCE PUBLICATION

تعداد صفحات : 5

Abstract—Progressing of the demand for electrical energy leads

to loading the transmission system close to their limits which

may leads to LFO happening. Low frequency oscillations

(LFO) in power system usuallyhappen because of lack of

damping torque to overcome disturbances in power system

such as changes in mechanical power. Due to the existence of

the low frequency oscillation (LFO), the transmission power of

AC lines is limited and the system angle stability is affected. In

this paper the Parameters of the classic PSS and SVC internal

AC and DC voltage controllers are designed in order to damp

the Low Frequency Oscillations (LFO).The design of PSS and

SVC parameters is considered as an optimization problem and

Hybrid Particle Swarm Optimization (PSO) and Genetic

Algorithm (GA) are used for searching optimized parameters.

The results of the simulation show that the SVC with PID

controllers is more effective in damping LFO compared to PSS

with PID controllers.

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