gas insulated transmission lines full report
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
project report tiger
Active In SP

Posts: 1,062
Joined: Feb 2010
21-02-2010, 07:35 AM

.ppt   GAS INSULATED TRANSMISSION LINES.ppt (Size: 3.37 MB / Downloads: 998)


Composed of pipes that houses conductors in SF6
Invented in 1974
Both overhead & underground system
Drawbacks of XLPE lead to GIL
Most economic, environment friendly & maintenance free alternative


Installation expense is less
XLPE needs extra cooling arrangement
Allowed conductors to be larger in cross-section
Construction of large capacity transmission link


High dielectric strength at lower cost
Regeneration capacity following a breakdown
Low pressure-increase following a breakdown
High load transfer capacity


Ground level
Elevated above ground
Below grade in an open or covered trench
Directly buried underground
Vertically in tunnels, shafts or towers
Suspended from existing substation structures


Conductors & enclosures
Insulators & particle traps
Plug in contacts
Aluminum bellows
Enclosure joints


Standardization of components
Optimization of pipeline
Introduction of N2


Less harm to atmosphere
Reduced cost for GIL
Useful for long distance power transmission
Insulating property is improved


Large capacity.
For long distance power transmission line.
Structure between that of GIL & XLPE.
Uses 3 sub-conductors.
Covered with solid dielectric polyethylene.
Insulated with SF6.
More flexible.
Withstands voltage same or more than GIL.
High current carrying capacity
Limited working space
High efficiency
Low resistive & capacitive loss
Good appearance
No interference with communication circuits
No extra cooling is required
High reliability


Length of is each GIL section is limited.
Particle contamination lower the insulating reliability of GIL.
Breakdown of insulator.
Earthquake resistant design must be considered.
SF6 gas is harmful to ozone.


Installation in tunnels
Ideal for environments that are sensitive to electro-magnetic fields.
Suitable for metropolitan areas where high energy rate is required.
Well suited for high power transmission.


One of the best transmission system in the world
Safe and reliable for more than 20 years
Researches are still going on to improve efficiency
Active In SP

Posts: 1
Joined: Aug 2010
19-08-2010, 02:05 PM

sir ,with due respect it is to state that i am not getting full report and ppt of GIS please plz send me the thread regarding this seminar and presentation plz

thank you so much in adv.
seminar class
Active In SP

Posts: 5,361
Joined: Feb 2011
02-05-2011, 03:19 PM

superior technology and excellentknowhow ensure quality and reliability
Siemens GIL systems are based on thesuccessful SF6 tubular conductor technology,which has been around for severaldecades. GIL consist of a central aluminumconductor with a typical electrical crosssection of up to 5,300 mm2. The conductorrests on cast resin insulators, which centerit within the outer enclosure. This enclosureis formed by a sturdy aluminum tube,which provides a solid mechanical andelectrotechnical containment for the system.To meet up-to-date environmentaland technical aspects, GIL are filled withan insulating gas mixture of mainly nitrogenand a smaller percentage of SF6. Forincreased lifetime, the “performance line”product series has a longitudinal particletrap installed over the entire horizontalroute section. An automated orbitalwelding procedure, accompanied bytailored ultrasonic inspection techniques,ensures perfect gastightnessof the aluminum tubes.During service, the fully encapsulateddesign fully protects the GIL againstenvironmental influences. Thanks to thetechnologically clear-cut, logical designand the use of high-quality materials,an absolutely maintenance-free productis achieved which requires externalinspection only. And at the end of itsservice life, the issue of de-installationis solved. The GIL tubular system withall its components and the insulationgas mixture are 100 percent recyclable.These factors help to minimize lifetimecosts.
Impressive practical record: GIL systemin Germany’s Wehr power plant
Siemens installed a GIL in a tunnel inthe Wehr pumped-storage power stationin the Black Forest as long ago as 1975.With a single-phase length of almost 4 kmthis installation is still a significant referenceamong worldwide GIL project and implimentations. Notwithstandingits service time, an inspectionafter 30 years showed that all componentswere still in top condition, and assuredthe customer that GIL will provide manymore years of reliable operation.

download full report
Active In SP

Posts: 1
Joined: Jan 2012
28-01-2012, 08:34 PM

pls send me thic presentation which will helps me alot.......
seminar addict
Super Moderator

Posts: 6,592
Joined: Jul 2011
06-02-2012, 10:23 AM

to get information about the topic gas insulated transmission lines full report ,ppt and related topic refer the link bellow





Thinking To Register

03-07-2012, 11:30 PM

Sir can you please give an information regarding where all the GIL is used in india?

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  wireless electricity transmission ppt jaseelati 0 337 09-02-2015, 02:38 PM
Last Post: jaseelati
  live line maintenance of transmission lines ppt jaseelati 0 290 23-01-2015, 02:24 PM
Last Post: jaseelati
  producer gas ppt jaseelati 0 128 07-01-2015, 01:49 PM
Last Post: jaseelati
  exhaust gas recirculation ppt and pdf for seminars jaseelati 0 185 05-01-2015, 03:15 PM
Last Post: jaseelati
  seminar report on gas insulated substation jaseelati 0 287 01-01-2015, 02:54 PM
Last Post: jaseelati
  transmission lines and waveguides by bakshi free download jaseelati 0 237 27-12-2014, 02:14 PM
Last Post: jaseelati
  transmission lines and waveguides by dhananjayan jaseelati 0 239 18-12-2014, 03:41 PM
Last Post: jaseelati
  transmission lines and waveguides by bakshi pdf free download jaseelati 0 245 11-12-2014, 03:23 PM
Last Post: jaseelati
  witricity full report project report tiger 28 38,236 30-08-2014, 02:26 AM
Last Post:
  How FACTS Controllers Benefit AC Transmission Systems seminar ideas 1 2,256 13-05-2014, 09:46 AM
Last Post: Ernest Striegel