افزایش پایداری سیستم قدرت با استفاده از منطق فازی شبیه سازی مقاله

افزایش پایداری سیستم قدرت با استفاده از منطق فازی

افزایش پایداری سیستم قدرت با استفاده از منطق فازی

نام مقاله به فارسی:

Enhancement of Power System Stability Using Fuzzy Logic Controller

نام مقاله به انگلیسی:

افزایش پایداری سیستم قدرت با استفاده از منطق فازی

افزایش پایداری سیستم قدرت با استفاده از منطق فازی

ABSTRACT:

This Dissertation includes work on the development of a fuzzy logic power system stabilizer to enhance the damping of generator oscillations In order to accomplish a stability enhancement. Speed deviation (Am) and acceleration (Aw) of the rotor synchronous generator were taken as the input to the fuzzy logic controller. These variables take significant effects on damping the generator shaft mechanical oscillations. The stabilizing signals were computed using the fuzzy membership function depending on these variables. The performance of the fuzzy logic power system stabilizer was compared with the conventional power system stabilizer and without power system stabilizer. To achieve good damping characteristics over a wide range of operating conditions, speed deviation and acceleration of a synchronous machine are chosen as the input. Signal to the stabilizers. The stabilizing signal is determined from certain rules for rule-based power system stabilizer. For fuzzy logic based power system stabilizer, the supplementary stabilizing signal is determined according to the fuzzy membership function depending on the speed and acceleration states of the generator. The simulation result shows that the proposed fuzzy logic based power system stabilizer is superior to rule-based stabilizer due to its lower computation burden and robust performance.

INTRODUCTION:

The electrical energy has become the major form of energy for end use consumption in today’s world. There is always a need of making electrical energy generation and transmission, both more economical reliable. The voltage throughout the system are also controlled to be within + 5% of their rated values by automatic voltage regulators acting on the generator field exciters, and by the sources of reactive power in the network.