This document summarizes a site visit report for an electrical engineering summer internship program. It details a visit by interns to a 132/33 KV substation in Allahabad, India. The interns were given an overview of the substation's components and operations by assistant engineers, including learning about protection equipment, transformers, circuit breakers, and the SCADA system. The purpose of the visit was for the electrical engineering students to gain practical knowledge of power transmission and distribution. The interns concluded they benefited from seeing the equipment in person and having the chance to discuss with substation staff.

1. SUMMER INTERNSHIP PROGRAM ELECTRICAL ENGINEERING-2018
SITE Visit Report
2nd
JULY,2018
At
132/33 KV SUB –STATION,TELIARGANJ
ALLAHABAD
SUBMITTED TO- SUBMITTED BY-
MOTILAL NEHRU NATIONAL INSTITUTE ADARSH KUMAR
OF TECHNOLOGY ,ALLAHABAD (Reg. No.-16737209)
RAJKIYA ENGINEERING COLLEGE
AMBEDKARNAGAR-224122

2. CONTENT
1. Acknowledgement 2
2. Information 3
3. Purpose of Visit 3
4. What we learn? 4
5. Conclusion 7
ACKNOWLEDGEMENT
We are gladly & thankful to Dr. Navneet Kumar Singh sir and Dr. Niraj
Kumar Choudhayr Sir and SIPEE -2018 Team who decided to take visit in
132/33KV Substation, Teliarganj-Allahabad
We are especially thankful to respected assistant engineers of Teliarganj-
Substation who gave the proper guidance to us and gave practical based approach
learning to us.

3. GENERAL INFORMATION
An electrical substation is a subsidiary station of an electricity generation,
transmission and distribution system where voltage is transformed from high to
low or the reverse using transformers. Electric power may flow through several
substations between generating plant and consumer, and may be changed in
voltage in several steps.
Teliarganj substation that has a step-down transformer decreases the
voltage(133/33KV) while increasing the current for domestic and commercial
distribution.
PURPOSE OF VISIT
Our main purpose for this visit is to be get practical knowledge of electrical power
transmission and distribution
We are Electrical Engineering student so we will get the idea of electrical power
transmission and distribution. we will also get familiar with Transformer
maintenance, circuit breaker, Transformer isolator, bus bar, Protective relays,
Lightening arresters, Load break switches

4. WHAT WE LEARN?
On 2nd
july. ,2018 (Monday) at 03:00 pm we reached at
Teliarganj- Sub Station
Introduction About Single Line Diagram, Different Protection Equipment,
SCADA system
At the beginning, one of the assistant engineer explained all the essential
component of the 133KV substation and explained one line diagram of Teliarganj

5. .Sigle line diagram,132KV substation Teliargnaj

Key Points:-
1. Different Protection Equipment:
break switches,
2. SF6-Circuit Breakers: Due to the unique properties of SF6, it is used for 132KV
lines protection. . Some of the outstanding properties of SF6 making it desirable
to using power applications are:
1. High dielectric strength
2. Unique arc-quenching ability
3. Excellent thermal stability
4. Good thermal conductivity

6. 3. Lightening arresters: Lightening arresters are provided in order to discharge
the high voltages. It acts as main protective device for feeder.
4. Capacitance Voltage Transformer: After the Lightening arresters “Capacitance
Voltage Transformer – CVT” which together with the Wave trapper acts as LC
circuit follows it. In this substation, we used CVT’s in the place of PT’s because it
easily passes high frequency signals"www.powergridindia.c. om
5.Step down Transformer” is used to step-down the voltage level from 133KV to
33KV by using “
6. Battery Room: There are three panel of battery source one is for PLCC, it is
48v, two panels are 220v, and it is for relay operation and many more application.
These batteries are charged when AC supply is ON.

7. CONCLUSION
From this visit, we got the information and practical knowledge about Power
Distribution and Transmission. Student got the knowledge about different
protection devices used in substation. They got the idea how to read the one line
diagram of power substation using different symbols used in diagram. Student
cleared out practical knowledge of transformer as how it step down voltage 133
KV to 33 KV.They also got knowledge about new SCADA based system as you
can operate substation by manually or by command from computer using SCADA
system and PLC programming. About 46 students were benefited from this visit as
they got chance to discussion with assistant engineers working at Substation.