Select Currency

# AN INSULATION CO-ORDINATION PROCEDURE FOR POWER SYSTEM EQUIPMENT

Format: MS WORD  |  Chapter: 1-5  |  Pages: 85  |  2463 Users found this project useful  |  Price NGN5,000

AN INSULATION CO-ORDINATION PROCEDURE FOR POWER SYSTEM EQUIPMENT

ABSTRACT
Generally, for existing Insulation co-ordination studies the power system has been modeled either by deterministic mathematical techniques or by statistical methods. The shortcoming of the existing conventional mathematical technique of Insulation co-ordination analysis is that it assumes that the power system dynamics is linear. This makes analysis of over voltage response of the system under transients less optimal for determining over voltage withstand of system elements. Thus, this work seeks to model a lightning induced over voltage transient in a High voltage power system substation(132/33KV) used as a case study) using Hidden Markov Model, to determine the maximum likelihood lightning surge signalThe stationdata and configuration was modeled/simulated (in a MATLAB environment), which implements the algorithms used in the work. The Hidden Markov algorithm(which makes use of observable parameters to study what is happening at the hidden states), was used to formulate the problem, while the Baum-welch and Viterbi algorithm were used to find/identify the maximum likelihood lightning overvoltage waveform. These hidden states are represented with different scenarios introduced in the work and the waveform identified, is used to determine the Basic Insulation level(BIL), which is used to determine other parameters accurately, which in turn helps to ensure an optimal/novel Insulation coordination procedure for power system equipment in the station.
The results showed that the minimum required margin(15%) exceeded by a little value(i.e. about 1.08) and the evaluation carried out to raise the protection margin to 18% meant the relocation of the arrester to within 5.56m of the transformer.

CHAPTER ONE

INTRODUCTION
Background of the Study
The demand for the generation and transmission of large amounts of electric power today, necessitates its transmission at extra-high voltages. In modern times, high voltages are used for a wide variety of applications covering the power systems, Industry and research Laboratories. Such applications have become essential to sustain modern civilization[1].
The diverse conditions under which a high voltage apparatus is used necessitate careful design of its insulation and the electrostatic field profiles[2]. This entails the analysis of the electrical power system to determine the probability of post insulation flashovers. For instance, analysis must be carried out to determine that the insulation contained within power system components like transformers has the acceptable margin of protection. Since the internal insulation is not self-restoring, a failure is completely unacceptable. An insulation co-ordination study of a substation will present all the probabilities and margins for all transients entering the station.
Over voltages are phenomena which occur in power system networks either externally or internally. The selection of certain level of over voltages which are based on equipment strength for operation is known as Insulation co-ordination[3]. It is essential for electrical power engineers to reduce the number of outages and preserve the continuity of service and electric supply. In another perspective, Insulation co-ordination is a discipline aiming at achieving the best possible techno-economic compromise for protection of persons and equipment against over voltages, whether caused by the network or lightning.

# HOW TO GET THE COMPLETE PROJECT ON AN INSULATION CO-ORDINATION PROCEDURE FOR POWER SYSTEM EQUIPMENT INSTANTLY

• Select any option to get the complete project immediately.
• Chat with Our Instant Help Desk on +234 813 292 6373 for further assistance.
• All projects on our website are well researched by professionals with high level of professionalism.

## Here's what our amazing customers are saying

UDS
Excellent work and delivery , I promise to share my testimonies everyone in need of this kind of work. You're the best
Excellent
Thank you iprojectmaster for saving my life, please keep it up and may God continue to bless you people.
Excellent
JONNAH EHIS
Ajayi Crowther University, Oyo
I was scared at first when I saw your website but I decided to risk my last 3k and surprisingly I got my complete project in my email box instantly. This is so nice!!!
Excellent
Oluchi From Michael Opara University
If you are a student and you have not used iprojectmaster materials, you are missing big time! iprojectmaster is the BEST
Excellent
Abubakar Iliyasu Hashim
Federal college of education pankshin affiliated to university of jos
I am highly impressed with your unquantifiable efforts for the leaners, more grace to your elbow.I will inform my colleagues about your website.
Very Good
Abdulrahman Jibrin
Nti Abaji
Nice one work prompt delivery tanx
Very Good
Joseph M. Yohanna
Thanks a lot, am really grateful and will surely tell my friends about your website.
Excellent
Dau Mohammed Kabiru
Kaduna State College of Education Gidan Waya
This is my first time..Your service is superb. But because I was pressed for time, I became jittery when I did not receive feedbackd. I will do more business with you and I will recommend you to my friends. Thank you.
Very Good
Abdul Mateen Iddrisu
UDS
At first I taught is a site full of fraudsters until I saw my project in my Gmail after my payment.. THANK YOU IPROJECTMASTER and May God the almighty bless u guys abundantly
Excellent
Uduak From Uniuyo
IProjectMaster is the best project site for students. Their works are unique and free of plagiarism!
Excellent