7. —
January 24, 2018 Slide 7
Benefits of Gas Insulated Switchgear
Low space requirement
Equipment volume reduction up to 96%
Small footprint for installation
Minimized aesthetic impact
Compact, completely encapsulated
No influence of environmental conditions
Minimum volume of insulating gas, high
gas tightness
Reliable function at high altitudes (>
1000m)
High reliability and availability
High Economic Efficiency
Low life cycle - and maintenance costs
Long economic life-time (> 40 years)
Pre-fabricated, pre-tested
Short project processing time
8. —
January 24, 2018 Slide 8
Benefits of Gas Insulated Switchgear
Low Space Requirement
96% volume reduction
(GIS type ELK compact substation compared to AIS substation)
Land cost saving
Minimized aesthetic impact on the local environment
9. —
January 24, 2018 Slide 9
ABB Gas Insulated Switchgear (GIS)
ABB GIS portfolio
Sub-Transmission
52-170 kV
Transmission
245-1100 kV
Type ENK ELK-04 ELK-14 ELK-3 ELK-4 ELK-5
Enclosure Three phase
Three-,
Single phase
Single phase
Rated Voltage (KV) 72.5 145/170 245/252/300 420/550 800 1100
Rated Power Frequency
Withstand Voltage * (kV)
140 275/325 460 650/740 960 1100
Rated Lightning Impulse
Withstand Voltage* (kV)
325 650/750 1050 1425/1550 2100 2400
Rated Normal Current (A) 2500 2500/4000 3150/4000 4000/5000 4000/5000 5000
Rated Short Circuit Breaking
Current, 3s (kA)
40 40/50/63 ** 40/50/63 63 50 50
10. —
January 24, 2018 Slide 10
ABB GIS ELK
ABB GIS history
1956 Research on SF6 firstly
1965 First 110 kV GIS in the world
1966 First 170 kV GIS in the world
1976 First 550 kV GIS in the world
1987 First 800 kV GIS in the world
1992 First 145 kV Container GIS in
the world
2003 First 3-phase GIS for 145 kV
/ 63 kA in the world
2008 First 1100 kV GIS in the world
1966 first 170 kV GIS
1965 first
110 kV GIS
12. —
January 24, 2018 Slide 12
ABB GIS ELK-04/170kV
Typical Double Bus Bar Bay
ELK-04
SF6 Gas Insulated
Switchgear (GIS)
Rated voltage: 145/170kV
Rated current: up to 4000 A
Rated short-circuit current:
40kA
IEC 62271-203: Gas Insulated
metal enclosed switchgear
13. —
January 24, 2018 Slide 13
ABB GIS ELK-04/170kV
Main technical data
Rated voltage： 170 kV
Rated current（BB）： up to 4000 A
Rated current（Feeder）： up to 4000 A
Rated frequency： 50/60Hz
Rated short-duration power-
frequency withstand
voltage(phase-earth)： 375kV
Rated lightning withstand
voltage(phase-earth)： 750kV
Rated short-time withstand
current: 40kA/3s
Rated peak withstand current: 100kA
SF6 gas leakage(annum)： ≤0.1%
Bay width：1m/1.2m
Rated filling pressure(abs)
1）CB/PT： 7bar
2）Others： 6bar
Circuit breaker mechanical
performance:
1）No load： 10000
times
2）Rated short-circuit
current：
20 times
DE mechanical endurance
(No load)： 5000 times
FES mechanical endurance
(No load)： 3000 times
Partial discharge: <2pC
14. —
January 24, 2018 Slide 14
9
8
7
5 61,3
42,3
Configuration
Double busbar
Busbar disconnector
with earthing switch
Circuit breaker
Current transformer
Fault making
grounding switch
Line disconnector
with earthing switch
Voltage transformer
Cable sealing end
1, 2
3
4
6
7
8
9
Air Insulated Switchgear
5
Gas Insulated Switchgear, three-phase
4,2 m
ABB GIS ELK-04/170kV
Typical Dimension
15. —
January 24, 2018 Slide 15
ABB GIS ELK-04/170kV
Typical DBB Bay
1. Local control cubicle
2. CB drive
3. Voltage transformer
4. Fast acting earthing
switch
5. Line disconnecting
and earthing switch
6. Cable sealing end
7. Cable sealing terminal
8. Current transformer
9. Arcing extinguishing
chamber
10.Busbar disconnecting
and earthing switch
21 3
9
8
10
6
4
7
5
16. —
January 24, 2018 Slide 16
ABB GIS ELK-04/170kV
DBB Arrangement for 170kV, 40kA, 3150A
Bus-bar Disconnecting/
Earthing Switch
Barrier Insulator
Control
Cubicle
Circuit Breaker
Cable End
Unit
Fast Acting
Earthing
Switch
Voltage
TransformerDisconnecting/ Earthing
Switch
Integrated Current
Transformer
Single line
Flange
diameter
735mm
17. —
January 24, 2018 Slide 17
ABB GIS ELK-04/170kV
Standard Modular Design
Flexible modular design
Standard flange dimension
for module connection
Easily extended or adapted
Each bay is divided into
several separated gas
compartments by barrier
insulators
Each gas compartment is
equipped with an SF6 gas
density relay and bursting
disk
18. —
January 24, 2018 Slide 18
Advantage of 3-phase design
Less enclosure, most compact, lowest
weight
SF6 gas sealing system reduced by 2/3,
effectively lower gas leakage possibility
Simplified mechanical drive, no need
long mechanical connection between
phases
More compact and lower weight
comparing with single phase design,
convenient for whole bay routine test
and transportation, lowest site risk
3-phase encapsulation is the
development trend, all manufacturers’
latest 170 kV GIS are all with 3-phase
design
ABB GIS ELK-04/170kV
Enclosure: 3-phase design
19. —
January 24, 2018 Slide 19
ABB GIS ELK-04/170kV
Al-alloy Enclosure
Enclosure material:
Al-alloy
• No magnetization
• No eddy current loss
• Low temperature rise
• Outstanding anti-rust
performance
• Low weight, easy and
economic for both
transportation and civil
work
• Weight for typical DBB bay:
2700kg (with PT)
2500kg (w/o PT)
20. —
January 24, 2018 Slide 20
ABB GIS ELK-04/170kV
Factory Prefabricated Whole Bay
Factory tested and shipped as a
whole bay:
Al-alloy enclosure: low weight
Significantly shorten
transportation, site installation &
erection period, lower failure rate
cause by on-site work
Minimum customer risk during
on-site work
Significantly shorten project
execution period
21. —
January 24, 2018 Slide 21
Al-alloy tubular expansion joint
Compensation of thermal
expansion /shrinkage and stress
caused by installation error
Dismantling unit during
maintenance, by this way the
specified bay could be pull out
separately
ABB GIS ELK-04/170kV
Expansion Joint
22. —
January 24, 2018 Slide 22
DES equipped with 2 view ports, FES equipped with 3 view
ports
Easy to inspect internal contact position for erection and
maintenance
To avoid arc glare. It is not allowed to open the view port
during operation
ABB GIS ELK-04/170kV
View Port
23. —
January 24, 2018 Slide 23
Option: Compact Plug-in CET (EHSVS Type C), Compact,
Simple, Easy for erection
Compact Plug-in
Cable End Termination
ABB GIS ELK-04/170kV
Plug-in Cable Termination (Optional)
24. —
January 24, 2018 Slide 24
ABB GIS ELK-04/170kV
Bushing with Composite Insulator
Bushing with composite
insulator
26. —
January 24, 2018 Slide 26
ABB GIS ELK-04/170kV
Application Examples
Compact, High Power Density, no Influence of
Environmental Conditions
Heavy duty ratings (63 kA / 4000 A) at
minimum gas volume
Outdoor installation without influence of
environment
Ideal solution for Integration of Renewables
Hydro power plants
Offshore wind farms
Support of energy management by
intelligent secondary technology
USA
Las Vegas,
nearby Bellagio
Switzerland
Elgisau,
nearby water
fall Rhine river
27. —
January 24, 2018 Slide 27
Flexible Integration in Buildings in Centre of
Power Consumption
Compact design, not visible
Fully encapsulated active parts
Container Substation, Short Delivery Times
Movable container substation for temporary
energy demand and for industrial
applications
ABB GIS ELK-04/170kV
Application Examples
Greece
Athena,
Olympic
Games 2004
Abu Dhabi
Integrated in
shopping
center
28. —
January 24, 2018 Slide 28
Harsh Environmental Conditions
Fully encapsulated active parts
Outdoor installation without influence of
environment
Germany
Heidelberg
Old Part of the
City
USA
Texas
Refinery
ABB GIS ELK-04/170kV
Application Examples
Flexible Integration in Buildings in Centre of
Power Consumption
Compact design, not visible
Fully encapsulated active parts
29. —
January 24, 2018 Slide 29
High Demand on Availability in Tropical Climate
55℃ ambient temperature
Tropical climate application
ABB GIS ELK-04/170kV
Application Examples
Compact Design for Temporary Energy Demand
Movable container substation for industrial
application
Compact and flexible applicationTaiwan
Movable
Contrainer S/S
Dubai
Palm Island
