This document discusses the components and layout of a gas insulated substation (GIS). It describes the key components including high voltage circuit breakers, disconnectors or earthing switches, voltage and current transformers, and terminals and connection elements. It also includes diagrams of an 800kV GIS layout and how the high voltage circuit breaker works. The document provides references for additional information on GIS maintenance, applications in power grids, and examples of 400/220kV GIS substations.

1. GAS INSULATED SUB-STATION
RONAL PARMAR
140080707003

2. CONTENTS
 Introduction
 High-voltage circuit breaker
 Disconnector or earthing switches
 Voltage transformer
 Current transformer
 Terminals and connection elements
 Local control cube

3. 800KV SUBSTATION LAYOUT
ELK-4 SERIES FOR 800KV

4. High-voltage circuit breaker
 At core of our switchgear system is classical puffer
CB with three chamber and an optimized and solid
layout that optimal adapt with the pre-in-section
closing resistor stack.
 The KEMA- certified CB is designed to provide
optimal performance and low maintenance.

5. HOW DOES IT WORK ?
High-voltage circuit breaker

6. Disconnector or earthing switches
• Disconnector provide a safe insulating gap to isolator
with different potential.
• The angular Disconnector integrated in the busbar
ensures the highest degree of flexibility in lay outing.

7. Disconnector or earthing switches
• Earthing switches connect isolating section of the
switchgear to the ground to protect personal during
maintenance and assembly work.

8. Voltage Transformer
• The single pole inductive voltage transformer are
connected to the switchgear with a standardized
connecting flange and a partition insulator.
• The primary winding is coiled on top of core and
the secondary windings. The latter are connected
to the terminal in the external terminal box
through a gas-tight multiple bushing.

9. Current Transformer
• The core concentrically enclose the primary
conductor and are located outside the gas
compartment elimination the need for as-tight feed
to the secondary terminals.

10. Terminals and Connecting
elements

11. Terminals and Connecting
elements

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

13. 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 .
 ABB, ELK-400, 800kV GAS-INSULATED
SUBSTATION .