© ABB

May 23, 2013 | Slide 1

Life Cycle Cost Comparison Conventional & New Compact Gas Insulated Switchgear (GIS)

Brian Cheung, ABB Limited, All Energy Conference, 23-05-2013

Agenda

Conventional vs Compact 400kV GIS

Cost Benefits with Compact GIS

Environmental Benefits

Life Cycle Cost (LCC) Comparison (Case Study)

Summary

© ABB Group

June 5, 2013 | Slide 2

© ABB Group

June 5, 2013 | Slide 3

Height (mm) -> 6200 -> 5200 -> est. 3800 (including voltage transformer)

Width (mm) -> 2700 (3*900) -> 2160 (3*720) (single break)

Volume reduced by approx 30%

Conventional vs Compact 400kV GIS Evolution Actual Layout using SP3-2

Actual Layout using SP3-1

New Layout using SP3-1

2006 2011 2012

3800

ELK-3/420C addresses today’s power challenges

© ABB Group

June 5, 2013 | Slide 4

Optimized for ratings up to

420kV, 5000A and 63kA

Compact footprint makes it ideal for

installations with constrained space

Front access to drives and position

indicators, service platforms provide

more convenience during operation,

inspection, maintenance

Shipped as assembled and tested bays

reducing installation and commissioning

time by approx.40%

Minimizes use of SF6

© ABB Group

June 5, 2013 | Slide 5

ELK-3/420C Compact GIS Components

Circuit breaker

Fast acting

earthing switch

Drives and control cabinet Current transformer

Earthing

switch

Bus bar disconnect

switch Voltage

transformer

Earthing switch

Service

platform

Fast acting

earthing switch

Earthing

switch

Bus bar disconnect

switch Voltage

transformer

Earthing switch

Service

platform

© ABB Group

June 5, 2013 | Slide 6

Compact GIS Accessibility

Stairways

Service platforms

platform bridges

(optional)

• All drives accessible from front panel

• All instrument transformers are wired to the control

cubicle and have no additional interfaces in-between

• Density information can be supplied with combined

density sensor/monitor and indicated at the front panel

• Service Platform with openings for accessibility to

• Viewports

• Filling points

Service

Platform

© ABB Group

June 5, 2013 | Slide 7

Conventional vs Compact GIS Influence on Land and Civil Cost

Reduced Dimension and Weight

Significant reduction in Building Cost due to

Size reduction by 40%

Weight reduction by 40%

Reduction of dynamic forces by 40% due to double-

motion puffer Technology

Self-supporting bay-assembly reduces additional required

support structures to a minimum

Modularity enables all possible layout and building

optimizations

Significant reduction of cable-works necessary onsite

© ABB Group

June 5, 2013 | Slide 8

Conventional vs Compact GIS Influence on Project Lead Time

Completely factory tested bays including Control Cubicle reduces

Manufacturing time in the factory by approx. 50 %

On-site erection by approx. 50%

All bays are shipped factory tested on-site

Only busbar-flanges have to be connected together

Flange connections to be tested are limited to a minimum

No adjustment of equipment needed

Commissioning time by up to 50%

CT-saturation curves do not need to be re-measured

Density monitors do not have to be re-checked

Control and Bay interlocking functions are already tested in the factory

All LCCs are Tested and wired with already the GIS-bay

© ABB Group

June 5, 2013 | Slide 9

Environmental Benefits

Reduced amount of installed SF6 by 40%

Reduced number of flange connections

Reduced total aluminum surface

Reduced number of support structures – self-

supporting

Factory testing and shipping as a complete

bay will

reduce gas-handling process at factory and on-

site and reduce SF6-handling losses

improve carbon footprint due to less packing

material and streamlined transportation

© ABB Group

June 5, 2013 | Slide 10

Life Cycle Cost Comparison (Case Study) Conventional vs Compact GIS

© ABB Group

June 5, 2013 | Slide 11

Summary

Ideal for installations with constrained spaces requiring ratings up to 420kV, 5000A and 63kA

Reduced building cost

Compact design reduces significantly the amount of SF6 gas required

Reduced Environmental Impact

Compact design enables shipping of factory-assembled, fully-tested bays in a container

Reduced erection and commissioning time

Modular design enables all possible configurations and building optimizations

Customer flexibility

Front access to drives, position indicators, and service platforms

High convenience during operation, inspection, and maintenance

Brian Cheung BEng(Hons) MSc CEng MIET

Principal Technology Engineer

ABB Limited

Oulton Road, Stone, Staffordshire, ST15 0RS, UNITED

KINGDOM

Phone: +44 1785 825025

Mobile: +44 7736 365360

email: brian.cheung@gb.abb.com

© ABB Group

June 5, 2013 | Slide 12