Gas-insulated lines
(GIL) - next generation
of power transmission
technologies
Electrical Networks of Russia
ENR 2010
Moscow 2 December 2010
Siemens AG 2010
GIL: Update in High Power Transmission Technology
Energy Sector
Dr. Petr Rudenko
©
Chart 1
Content
Challenges in Mega Cities
Data, Site Works & Laying Methods of GIL
Technical Advantages of GIL
 EMV Radiation
 Transmission Losses
 Auto Reclosure Functionality
 Innovative Arc Location
References
Summary
© Siemens
Chart 2
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Challenges
Need for more
energy
Urbanization
Capacity increase
and bulk power
transmission over
long distances
Scarcity of natural
resources
Distribution within
congested areas /
mega cities
Environmental
awareness
Open markets
Goal: reliable,
flexible, safe and
secure grids
© Siemens
Chart 3
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Modern Architecture in Mega Cities
Wind-Generation
Solar-Cells
High Power Underground
Energy Transmission,
Switchgear & Storage
Parking for E-Cars
Monitoring of CO2 Emissions
Nano-Materials
© Siemens
Chart 4
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Transmission Grid in Densely Populated Areas
…in 1970 with 110kV
© Siemens
Chart 5
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
…in 2000 with several 110kV lines
© Siemens
Chart 6
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
…in Future with 400(500)kV
© Siemens
Chart 7
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Our High Voltage System Solutions for Megacities
Gas-Insulated Switchgear (GIS)
Gas-Insulated Lines (GIL)
© Siemens
Chart 8
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Content
Challenges in Mega Cities
Data, Site Works & Laying Methods of GIL
Technical Advantages of GIL
 EMV Radiation
 Transmission Losses
 Auto Reclosure Functionality
 Innovative Arc Location
References
Summary
© Siemens
Chart 9
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Technical Data of a 400 - 500 kV GIL
Rated Voltage
Impulse withstand voltage
Rated current
Rated short time current
Rated Transmission Load
Capacitance
400 - 500 kV
1425 - 1675 kV
2000 - 4500 A
63 kA / 3s
2200 - 3900 MVA
55 nF/km
Overload capability
Insulation gas mixture
100 %
80 % N2 & 20 % SF6
Designed and tested according to IEC 61640
„HV gas-insulated transmission lines for rated voltages of 72.5 kV and above”
© Siemens
Chart 10
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Installation Site
© Siemens
Chart 11
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Fitting of GIL Conductor on Site
© Siemens
Chart 12
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Automated Orbital Welding of GIL
© Siemens
Chart 13
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GIL above Ground
© Siemens
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GIL
High Power Transmission in the Underground
© Siemens
Chart 15
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GILs are Highly Adaptable:
Laid in Tunnels or Directly Buried
 Small width of trench
 Min. interference with
environment during
installation
 Space saving concept
 Cost advantage
Inside the GIL: 80% N2 & 20% SF6
© Siemens
Chart 16
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Content
Challenges in Mega Cities
Data, Site Works & Laying Methods of GIL
Technical Advantages of GIL
 EMV Radiation
 Transmission Losses
 Auto Reclosure Functionality
 Innovative Arc Location
References
Summary
© Siemens
Chart 17
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GIL Comprise Low Electromagnetic Field:
Calculated Enclosure Currents of GIL
© Siemens
Chart 18
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Magnetic Induction Above a Buried GIL
800 MVA, 400 kV
GIL are environmentally friendly with regard to ultra low field emissions.
The electromagnetic fields are lower by the factor of 15 to 20 compared
to conventional transmission technologies.
© Siemens
Chart 19
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Comparison of Losses:
OHL vs. Cables & GIL (1 system)
350,00
Overhead Line
4x240/40AlSt
P [W/m]
Overhead Line
4x560/50AlSt
250,00
XLPE Cable
2XKLDE2Y
1x2500mm²
200,00
GIL
517/500-180/160
150,00
100,00
50,00
0,00
200
150
400
600
400
800
1000
700
1200
1400
1000
1600
1800
1200
2000
2200
1500
2400
2600
A
1800 MVA
© Siemens
Chart 20
GIL: Update in High Power Transmission Technology
3000
2100
AG 2010
Energy Sector
Auto Reclosure on GIL
Scenario:
 fault detection by protection system
 line drop-off and arc extinguishing
Auto Reclosure:
 gas insulation is self-recovering
 successful auto re-closure:
by-products are collected in the
particle trap
 unsuccessful auto re-closure:
no impact or fire outside the GIL
View inside the GIL
Test Conditions: 63 kA, 500ms
No external impact, no fire risk due to non inflammable materials
© Siemens
Chart 21
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GIL Secondary Equipment
GPS based Arc Location System
© Siemens
Chart 22
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Content
Challenges in Mega Cities
Data, Site Works & Laying Methods of GIL
Technical Advantages of GIL
 EMV Radiation
 Transmission Losses
 Auto Reclosure Functionality
 Innovative Arc Location
References
Summary
© Siemens
Chart 23
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Wehr, Germany
Commisssioning 1975, Tube Length 4 kms
1
2
3
4
5
6
600 MVA Transformer
Encapsulated Surge Arrestors
Transfer Switching units
GIL Connection
Open Air Surge Arrestor
Overheadline
Rated Voltage
Rated Impulse
Withstand Voltage
Rated Current
Rated Short-Time Current
3,5 m
420 kV
1640 kV
2000 A
53 kA
5
4
2,8 m
© Siemens
Chart 24
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Palexpo Fair Building
Airport Geneva, Switzerland
Rated
TowerVoltage:
176
Rated Current:
Rated Impulse
Withstand Voltage:
300 kV
2000 A
Rated
Short-Time Current: 50 kA, 1s
Single Phase
Length app.:
2500 m
1050 kV
Tower 175
PALEXPO
Hall 6
© Siemens
Chart 25
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Hydropower Station Xiluodu, China
Left Bank
Right Bank
620m
End User
China Three Gorges Project Corp.
Project Highlights
 Biggest Siemens GIL installation
applying welding technology
worldwide
 7 vertical GIL Systems
(option: 1 system)
 ~12kms of GIL tubes
Technical Data
Rated Power:
up to 3900
Rated Voltage:
550
Rated Current:
up to 4,500
Insulation Gas:
100%
Contract Award:
19.05.09
Commercial Operation
(planned):
2013
© Siemens
Chart 26
GIL: Update in High Power Transmission Technology
MVA
kV
A
SF6
AG 2010
Energy Sector
Kelsterbach Airport Frankfurt, Germany
OHL gantry
Customer:
RWE Systems
Location:
Airport Frankfurt
Contract award: July 2008
Commercial
Operation:
Jan. 2010
Insulation Gas: 80%N2, 20%SF6
Transmission
Power:
2x1800MVA
Installation:
1st GIL Directly Buried
400 kV GIS
© Siemens
Chart 27
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Kelsterbach
Site View before Refilling of the Trench
© Siemens
Chart 28
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
References – Gas-Insulated Transmission Lines
Status Jan 2010*
National Grid Transco
Elstree, Great Britain
750 m / 2004
Statkraft (NVE)
RoD, Norway
110 m / 1981
Rheinisch Westfälische
Elektrizitätswerke
Kelsterbach, Germany
5400 m / 2009
Badenwerk
Rheinhafen, Germany
Steampower station unit 7
800 m / 1982
Schluchseewerk AG
Wehr, Germany
4000 m / 1975
Stadtwerke München
HKW-Nord, Germany
800 m / 1990
Neckarwerke
Altbach, Germany
800 m / 1985
National Grid
Stella West, Great Britain
1258 m / 2010
ERTAN Hydro Power
Jinping I, China
3300 m / 2011
China Three Gorges
Project Corporation,
Xiluodu, China
12750 m / 2012
Austria Hydro Power
Limberg II, Austria
480 m / 2010
Tehri Hydro Development Corp., Tehri
Hydro Project, India
4550 m / 2006
Ontario Hydro
Bowmanville, Canada
3175 m / 1987
Energie Ouest Suisse
PALEXPO, Switzerland
2560 m / 2001
Electricity Generating
Authority of Thailand
Sai Noi, Thailand
3510 m / 2002
Deutsche Babcock AG for
Ministery of Electricity
Homs P.S., Libya
800 m / 1980
Egyptian Electricity Authority
Itay el Baroud, Egypt
670 m / 1993
Perusahaan Umum
Listrik Negara PLN
Gresik Power Plant,
Indonesia
2300 m / 1992
Cairo Electricity
Power Corp.
Cairo, Egypt
1850 m / 2004
Public Utilities Board
Senoko, Singapore
401 m / 1993
Swawek, Windhoek
Ruacana, Namibia
800 m /1976
SNEC Jeddah,
Saudi Arabia
300 m / 1981
Saudi Consolidated
Electricity Company
Rabigh/Yanbu,
Saudi Arabia
1340 m / 1988
Saudi Consolidated
Electricity Company
9023, Saudi Arabia
21,000 m / 2010
Dubai Electricity and
Water Authority
Warsan, Dubai
4050 m / 2007
Atomic Energy Org.
Nuclear power
station Iran 1, Iran
3700 m
above ground installation
tunnel installation
directly buried installation
© Siemens
Chart 29
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Content
Challenges in Mega Cities
Data, Site Works & Laying Methods of GIL
Technical Advantages of GIL
 EMV Radiation
 Transmission Losses
 Auto Reclosure Functionality
 Innovative Arc Location
References
Summary
© Siemens
Chart 30
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
GIL Summary
Sealed for lifetime
Continuous welded
High ampacity
Low losses
Long lifetime through particle trap
No reactive compensation (<100km)
No ageing of insulating gas
Automatic reclosure functionality
Low external electromagnetic fields
High safety (no fire hazard)
© Siemens
Chart 31
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector
Thank you !
© Siemens
Chart 32
GIL: Update in High Power Transmission Technology
AG 2010
Energy Sector