This document discusses gas insulated substations (GIS) and their construction for different voltage levels. It describes the components and layout of 3-phase encapsulated and segregated GIS for 72.5-145kV applications. For 245-362kV applications, it outlines the components and layout of single-breaker and double-breaker GIS configurations. The document also mentions further topics for potential presentation work and lists references used.

1. GAS INSULATED SUB-STATION
RONAL PARMAR
140080707003

2. CONTENTS
 Construction of 72.5~145kV
◦ 3-ph encapsulated
◦ 3-ph segregated
 Construction of 245~362kV
◦ One break
◦ Two break

3. Construction of 72.5~145kV
 3-ph encapsulated v/s 3-ph segregated
 Both type GIS with
the assumption that
the busbar diameter
and insulation
distance are equal
for both of those
type.
 Segregated type has
a higher space
factor and therefor
has grater potential
to be made smaller
with a new design.

4. Construction of 72.5~145kV
 3-ph encapsulated
1. Circuit Breaker
2. Bus Disconnector
with maintenance
Earthing switch
3. Bus Disconnector
4. BCT
5. Line DS/ES
6. High speed ES
(HSES)
7. Cable head
8. Operating
mechanism for
CB
9. Potential
transformer
10.GAS area

5.  3-ph encapsulated

6. Construction of 72.5~145kV
 3-ph segregated
1. Main bus
2. Bus Disconnector
3. Earthing switch
for maintenance
4. Circuit breaker
5. Current
transformer
6. Line
Disconnector
7. Earthing switch
for making-proof
8. Bushing
9. Insulator spacer
10.Operating
mechanism for
CB

7.  3-ph segregated

8. Construction of 245~362kV
 one break  Two break

9.  one break
Construction of 245~362kV
1. Main bus
2. Bus Disconnector
3. Earthing switch
for maintenance
4. Current
transformer
5. Circuit breaker
6. Line
Disconnector
7. Earthing switch
for making-proof
8. Bushing
9. Insulator spacer
10.Operating
mechanism for
CB

10.  one break

11.  one break

12.  one break

13.  Two break
Construction of 245~362kV
1. Main bus
2. Bus Disconnector
3. Earthing switch
for maintenance
4. Current
transformer
5. Circuit breaker
6. Line
Disconnector
7. Earthing switch
for making-proof
8. Bushing
9. Insulator spacer
10.Operating
mechanism for
CB

14.  Two break

15.  Two break

16.  Two break

17. FURTHER PRESENTATION WORK
 Construction of high voltage GIS sub-station
 Maintenance of GIS sub-station
 GIS approach in the GRID
 Visit of 400/220KV GIS substation located at DASTAN
, bardoli .

18. REFERENCES
 GAS INSULATED SWITCHEAR(R) , 2003.01(09)
2011.08 PRINTED IN KOREA HUMAN POWER.
 SHUICHI SUIYAMA ,” EXTRA-HIGH VOLTAGE SF6
AS –INSULATED SWITCHEAR ” , IEEE , VOL.45
NO.3 , FUJI ELECTRICAL .
 ALSTOM , B65 ,72.5-145KV GAS-INSULATED
SUBSTATION .
 ALSTOM , B105 , 245-362KV GAS-INSULATED
SUBSTATION .