A Project Report
On
STUDY OF 400 KV SWITCHYARD IN
KTPS-VI STAGE
A Dissertation submitted in partial fulfillment of the academic requirements for the
award of the degree of
BACHELOR OF TECHNOLOGY
IN
ELECTRICAL AND ELECTRONICS ENGINEERING
By
K. SAHAN ADITHYA H.T. No. 21JJ1A0229
P. JAYANTH H.T. No. 21JJ1A0251
M.OMKIRAN.
N.SNEHANJALI
Under the Esteemed guidance of
P. YELLAIAH GOUD
Head of the department
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
SRI INDU COLLEGE OF ENGINEERING & TECHNOLOGY
(Affiliated to JNTU Hyderabad)
Ibrahimpatnam, R.R.District, 501510
MAY 2011
SRI INDU COLLEGE OF ENGINEERING & TECHNOLOGY
Ibrahimpatnam, R.R.District, 501510
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
CERTIFICATE
This is to certify that the Dissertation entitled "STUDY OF
400 KV SWITCHYARD IN KTPS VI STAGE" is a bonafide work done by
J.KRISHNA TEJA(08D41A0206),K. APARNA(08D41A0240) in partial
fulfillment of the academic requirements for the award of the degree of Bachelor
of Technology in Electrical and Electronics Engineering , submitted to the
Department of Electrical and Electronics Engineering, Sri Indu College of
Engineering & Technology, Hyderabad during the period 2008-12.
Internal Guide HOD
Dept.of.EEE
ANDHRA PRADESH POWER GENERATION
CORPORATION LIMITED
KOTHAGUDEM THERMAL POWER STATION – VI STAGE
CERTIFICATE
This is to certify that this is the bonafide record of the Project Report entitled
“STUDY OF 400KV SITCHYARD IN KTPS-VI STAGE” carried out by
J. KRISHNA TEJA H.No. 08D41A0206
K. APARNA H.No. 08D41A0240
third year students of Sri Indu College of Engineering &
Technology ,Ibrahimpatnam, R.R..district during the academic year 2011-2012 in
partial fulfillment of the requirement for the award of the Degree of Bachelor of
Technology in Electrical and Electronics Engineering at K.T.P.S-VI stage during
May 2011 in Switchyard sub division under the guidance of
Er.G.Srinivas(DE/EM&MRT) , Er.M.V.Suryanarayana, (A.D.E/Switchyard).
Place : Paloncha Divisional Engineer
Station: KTPS – VI Stage EM&MRT
KTPS-VI Stage, Paloncha
Acknowledgment
With great pleasure we want to take this opportunity to express our heartfelt
gratitude to all the people who helped in making this project work a grand success.
We are grateful to Mr.P.Yellaiah Goud for his valuable suggestions and
guidance given by him during the execution of this project work.
First of all we would like to thank Mr.P.Yellaiah Goud, Head of the
Department of Electrical & Electronics Engineering, for being moral support
throughout the period of our study in SICET.
We are highly indebted to Principal Dr.P.Mallesham for giving us the
permission to carry out this project.
We hereby express my sincere thanks and regards to Er. G.Srinivas
Divisional Engineer/ Electrical Maintenance & MRT Division, KTPS-VI Stage,
Paloncha.
We take this opportunity to express my earnest thanks to
Er.M.V.Suryanarayana.Assistant Divisional Engineer, Switchyard, KTPS- VI stage
for his valuable guidance, constant encouragement, cooperation and endorsement at
every stage of this project work.
Our special thanks to Er.M.Vijay Kumar, Assistant Divisional Engineer,
Switchyard, KTPS-VI Stage, for constant support and efforts throughout the course of
my project, to make it successful.
J. KRISHNA TEJA (08D41A0206)
K. APARNA (08D41A0240)
ABSTRACT
An electrical switchyard is an assemblage of electrical components including bus bars,
breakers, transformers,relays CT’s, CVT’s, Lightning arrestors etc., The transmission of
electrical power takes place through the bus bars. We can say, the bus bars are junction points
capable of carrying huge power. These components are connected in a definite sequence such
that a circuit can be switched off during the normal operation by manual command and also
automatically during abnormal condition such as short circuit / earth fault.
We have studied about the Thermal Power plant operation cycles like Feed water
cycle, Condensate cycle, Steam cycle etc.,
We also succeeded in presenting briefly about STUDY OF 400KV SWITCHYARD
in KTPS VI stage, which consists of two tie-line feeders through which we can send or
receive power and two outgoing feeders through which we can transmit power to the different
stations.
. It gives details of various electrical equipments employed in the functioning of the
400 kV switch yard.We also expand about various protection schemes employed for the
protection of the station transformer like over flux protection, diferential protection etc.,
CONTENTS
ABSTRACT
CHAPTER 1:INTRODUCTION TO KTPS-VI STAGE
1.1 Installed Capacity 1
1.2 Primary Fuel Supply 2
1.3 Supply of Water 2
CHAPTER 2: INTRODUCTION TO THERMAL POWER PLANTS
2.1 Principle of operation
3
2.2 Air and gas flow system
3
2.3 Regenerative feed heating system
5
2.4 water and steam circuit
5
2.5 steam turbine
6
CHAPTER 3: 400 KV SWITCH YARD
3.1 Introduction. 9
3.2 Layout of switchyard. 12
3.3 Bus bar arrangements. 28
CHAPTER 4: PROTECTION
4.1 Need for protection. 33
4.2Power transformers. 33
4.3Station transformer protection. 35
CHAPTER 5: ADVANCED TECHNOLOGY
5.1 Scada 49
5.2 400 kv GIS 52
CHAPTER 6: CONCLUSION 56
BIBLIOGRAPHY 57
