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ABSTRACT

Driven by economic, technical, and environmental reasons, the energy sector

is moving into an era where electrical demand will be met through widespread

instal lation of distributed resources or whats known as Distribution Generation

Systems (DGS). The project deals with a DGS with fixed-speed induction-generator-

based wind turbines (FSWT). These are sensitive and vulnerable to voltage

disturbances and reactive power deficiency. Consequently, the control and protection

strategies for such a DGS should be prompt and precise to avoid undesired wind

generator cutting off. This study investigates and analyses the dynamic

characteristics of an FSWT to reveal the behaviors of an FSWT under disturbances.

Then a fast control strategy for stabilizing an islanded DGS is proposed.

The main contributions of the control strategy are: the total amount of reactive

power compensation and load shedding may be determined precisely; all the

operation execution points may be decided accurately to improve DGS stability.

Furthermore, the implementation of the fast control strategy is also discussed. A case

study is presented to demonstrate the effectiveness of the proposed method.

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ACKNOWLEDGEMENT

The initiation and the rudimentary concept of project are ascribable to my

guide Dr. P.SOMASUNDARAM , Associate Professor, Power Systems

Engineering Division, without whose invaluable guidelines, patient and constant

encouragement nothing would have been materialized. I owe my gratitude to him.

I thank Dr. S.USA , Head of the Department, Electrical and Electronics

Engineering for her kind support and amenities provided complete my work in time.

I thank to Dr. R.P. Kumidini Devi , Associate Professor, Power systems

Engineering Division for her encouragement throughout this work.

My sincere thanks to Mr. V.THIYAGU RAJA, research Scholar, for his

constructive discussions throughout the duration of my project work.

I am obliged to the faculty, research scholars and office staff of Power

systems Engineering Division for their encouragement and support round the clock.

With great pleasure, I express a large measure of my gratitude to my parents, sister

and friends for their moral prop up and encouragement.

(NEKKANTI S S S CHANDRA)