This presentation summarizes the key components of the 33/11kV substation of the Uttarakhand Power Corporation Limited (UPCL) in Rishikesh. It introduces UPCL as the power utility of Uttarakhand, India. It then describes the single line diagram of the substation and highlights some of its main components, including the 132/33kV transformer, surge arresters, capacitor voltage transformers, isolators, circuit breakers, bus couplers, current transformers, and different types of insulators used. The presentation provides an overview of the substation's layout and functions.

1. PRESENTATION ON
INDUSTRIAL TRAINING
UTTARAKHAND POWER CORPORATION LIMITED
(33/11KV SUBSTATION UPCL BARRAGE {RISHIKESH}
UNDER GUIDENCE OF SHYAM SUNDAR J.E OF UPCL
BY TANUJ SHARMA

2. INTRODUCTION
UTRAKHAND POWER CORPORATION LIMITED {UPCL}
▣ Uttrakhand power corporation limited. is the power transmission utility
of the state of Uttarakhand formerly known as Uttaranchal. On 9
November 2000, this 27th state of the Republic of India was carved out of
the Himalayan and adjoining northwestern districts of Uttar Pradesh per
the Uttar Pradesh State Re-Organization Act, 2000.
▣ The State of Uttaranchal in exercise of the power granted to it under
Section 63(4) .
▣ State Re-Organization Act, 2000, formed two separate companies in
power sector Uttaranchal Jal Vidyut Nigam Ltd. for generation of hydro-
electricity in the state and Uttaranchal Power Corporation Ltd. for
transmission & distribution of electricity in the state.

3. POWER MAP OF UTTARAKHAND

4. SINGLE LINE DIAGRAM
▣ Single line diagram is a simplified notation for
representing a three-phase power system.
Electrical elements such as circuit breakers,
transformers, bus bars, and conductors are
shown by standardized schematic symbols.
Instead of representing each of three phases
with a separate line or terminal, only one
conductor is represented. It is a form of block
diagram graphically depicting the paths for
power flow between entities of the system.

5. SIX FEEDERS OF THESE
SUBSTATION
▣ AIIMS RISHIKESH
▣ BARRAGE COLONY

6. TRANSFORMER
▣ Transformer is a static
electromagnetic device
used to change the either
voltage or current level
keeping the total VA
constant.
▣ A 3-phase step down
transformer of rating
132kv/33kv is installed at
the sub-station.
▣ Transformers are static
devices, totally enclosed
and generally oil
immersed. Therefore,
chances of faults occurring
on them are very rare.

7. ▣ SWITCHYARD
1. Lightning Arrester :-
A lightning arrester or a surge
diverter is a protective device
which conducts the high
voltage surges on the power
system to the ground. Also,
surge arrester is a device to
protect electrical equipment
from over–voltage transients
caused by external (lightning)
or internal (switching) events.
SURGE ARRESTER

8. 2.CAPACITOR VOLTAGE TRANSFORMER
▣ A capacitor voltage
transformer (CVT or
CCVT), is a
transformer used in
power systems to step
down extra high
voltage signals and
provide a low voltage
signal, for metering or
operating a protective
relay.

9. CAPECITOR VOLTAGE TRANSFORMER (CVT) BETWEEN SURGE ARRESTER
AND WAVE TRAP

10. WAVE TRAPE
▣ A line trap (HIGH-
FREQUENCY STOPPER)
is a maintenance-free
parallel resonant circuit,
mounted inline on high-
voltage(HV) AC
transmission power lines
to prevent the
transmission of high
frequency (40KHZ to
1000KHZ) carrier signals
of power line
communication to
unwanted destinations.

11. CURRENT TRANSFORMER
▣ A current transformer is a
type of transformer that is
used to measure AC current.
It produces an alternating
current in its secondary
which is proportional to AC
current in its primary.
Current Transformer are the
current sensing units of the
power system. The output of
the current transformers are
used in electronic equipment
and are widely used for
metering and protective
relays in the electrical power
industry.

12. ISOLATOR
▣ An Isolator is a circuit
breaking switch which
can only be operated
(either open or close) no
load. There are three
types of isolators used
in this particular sub-
station depending upon
their names
▣ TRANSFER ISOLATOR
▣ LIEN ISOLATOR
▣ BUS ISOLATOR

13. CIRCUIT BREAKER
▣ The circuit breaker is one
of the most important unit
of electrical power system.
Circuit breaker is a
mechanical switching
device capable of making,
carrying and breaking
currents under normal
circuit conditions and also
making , carrying for a
specified time, and
automatically breaking
currents under specified
abnormal circuit
conditions such as those
of short-circuits(faults).

14. BUS COUPLER
▣ This is same as that of
other circuit breakers (at
both 132kv and
▣ 33kv sides) in both
construction and
operating mechanism
but used when some
▣ maintenance work is to
be done at any other
main circuit breaker
thus also known as
auxiliary circuit
breaker.

15. INSULATORS
Overhead line insulators are used to separate line
conductors from each other and from the
supporting structures electrically.
▣ The insulators should have high permittivity so it
can withstand high electrical stresses.
▣ It should possess high mechanical strength to bear
the conductor load under worst loading
conditions.
▣ It should possess high mechanical strength to bear
the conductor load under worst loading
conditions.

16. THERE ARE DIFFERENT TYPE OF INSULATOR USED IN
TRANSMISSION LINE
▣ PIN ISOLATOR:-
Pin insulator is
earliest developed
overhead line
insulator, but still
popularly used in
power network up to
33kV system.

17. THANKYOU