SlideShare ist ein Scribd-Unternehmen logo
1 von 18
Downloaden Sie, um offline zu lesen
GAS INSULATED TRANSMISSION
LINES(GIL)
INTRODUCTION TO GIL
 Gil are composed of pipes that houses conductors in SF6 gas.
 Gil are good alternative for transmission of extra high voltage(EHV).
 Gil are used for both underground and overhead transmissions.
WHY ONLY SF6 RATHER THAN AIR?
 Electronegativity.
 Dielectric strength.
 Arc quenching ability.
N2-SF6 MIXTURE.
 Ecological factors.
 Maintenance.
STRUCTURE OF
GIL
• Conductors & enclosures.
• Insulators.
• Enclosure joint.
GIL VS CONVENTIONAL LINES
 Magnetic fields.
 Noise.
 Space.
 Life span.
RATINGS OF GIL(2nd generation)
 Rated voltage: 230 kV – 550 kV
 Rated current: 2500 A – 4000 A
 Transmission capacity: 1000 MVA – 3800 MVA
 Rated short-time current: 63 kA/3s
 Rated Frequency: 50/60Hz
 Capacitance: 55pF/m
 Inductance: 220nH/m
 Resistance: 10mW/km (typical)
 Insulation gas: N2-SF6 mixture
 Pipe materials: Aluminum alloys
LAYOUT METHODS FOR INSTALLATIONS
OF GIL
1. Aboveground installation.
2. Direct burial installation.
3. Vertical installation.
4. Tunnel installation.
1.ABOVE GROUND INSTALLATION
• Gil are unaffected by high
ambient temperature ,
intensive solar radiation or
severe atmospheric
pollution.
• Corrosion protection is not
required.
2.DIRECT BURIAL INSTALLATION
• These systems are coted with
continuous polyethylene to
safeguard corrosion resistant
aluminum alloy.
• The land can be used for
irrigation with minor
restrictions.
3.VERTICAL INSTALLATION
• Gas insulated tubular
conductors can be installed
without a problem at any
gradient ,even vertically.
• These are top solution
especially for cavern
hydropower plant.
4.TUNNEL INSTALLATION
• The system stays accessible
for easy inspection and high
transmission capacity is
ensured.
• They can installed in a
tunnel or shaft.
ADVANTAGES
• High transmission capacity
• Low transmission losses
• Low capacitance
• High reliability
• High operational safety (no fire risk, no external impact in case of internal failures).
• No practical ageing of components
• Very low external magnetic field
• No interference with the communication systems
DISADVANTAGES
• Length of each GIL section is limited.
• Earthquake resistant design must be considered.
• SF6 gas is harmful to ozone.
APPLICATIONS
• Most of the installations are 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.
Future applications
• Long Distance AC-GIL.
• Trans European Networks.
• Offshore Wind farms.
• Improved Reliability of Electric Power.
CONCLUSION
Thank you
PRESENTED BY
S.SUJAY
UNDER THE GUIDANCE OF
MRS.V.SUDHA RANI

Weitere ähnliche Inhalte

Was ist angesagt?

GAS INSULATED SUB-STATION
GAS INSULATED SUB-STATIONGAS INSULATED SUB-STATION
GAS INSULATED SUB-STATIONsujitmandalsk
 
GIS (Gas-Insulated Substation) by Bharat & Shanni
GIS (Gas-Insulated Substation) by Bharat & ShanniGIS (Gas-Insulated Substation) by Bharat & Shanni
GIS (Gas-Insulated Substation) by Bharat & ShanniBHARATKUMAR RATHOD
 
Gas insulated substation 2
Gas insulated substation 2Gas insulated substation 2
Gas insulated substation 2naga pooja
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substationhimanshu kumar
 
27072013140225 gas-insulated-substations
27072013140225 gas-insulated-substations27072013140225 gas-insulated-substations
27072013140225 gas-insulated-substationsMugdha Jhanjhote
 
Gas insulated substation 1
Gas insulated substation 1Gas insulated substation 1
Gas insulated substation 1Ronal Parmar
 
Qualitrol | Bushing Monitoring
Qualitrol | Bushing MonitoringQualitrol | Bushing Monitoring
Qualitrol | Bushing MonitoringSean Wallace
 
Electric substation
Electric substation Electric substation
Electric substation ANNU KUMAR
 
Vacuum circuit breaker selection of circuit breakers
Vacuum circuit breaker selection of circuit breakersVacuum circuit breaker selection of circuit breakers
Vacuum circuit breaker selection of circuit breakersshubham_bharadia
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substationAjay Kuriakose
 
Conductors used in transmission line
Conductors used in transmission lineConductors used in transmission line
Conductors used in transmission lineSourabh sharma
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substationsharique_64
 
Lv switchgear & lv cable sizing
Lv switchgear & lv cable sizingLv switchgear & lv cable sizing
Lv switchgear & lv cable sizingAsif Eqbal
 
Electrical Grid Substation
Electrical Grid SubstationElectrical Grid Substation
Electrical Grid SubstationAng Sovann
 

Was ist angesagt? (20)

Ug cables
Ug cablesUg cables
Ug cables
 
GAS INSULATED SUB-STATION
GAS INSULATED SUB-STATIONGAS INSULATED SUB-STATION
GAS INSULATED SUB-STATION
 
GIS (Gas-Insulated Substation) by Bharat & Shanni
GIS (Gas-Insulated Substation) by Bharat & ShanniGIS (Gas-Insulated Substation) by Bharat & Shanni
GIS (Gas-Insulated Substation) by Bharat & Shanni
 
Gas insulated substation 2
Gas insulated substation 2Gas insulated substation 2
Gas insulated substation 2
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substation
 
27072013140225 gas-insulated-substations
27072013140225 gas-insulated-substations27072013140225 gas-insulated-substations
27072013140225 gas-insulated-substations
 
Gas insulated substation 1
Gas insulated substation 1Gas insulated substation 1
Gas insulated substation 1
 
GIS-NESCL-6
GIS-NESCL-6GIS-NESCL-6
GIS-NESCL-6
 
Single core and multi core cables
Single core and multi core cablesSingle core and multi core cables
Single core and multi core cables
 
Qualitrol | Bushing Monitoring
Qualitrol | Bushing MonitoringQualitrol | Bushing Monitoring
Qualitrol | Bushing Monitoring
 
Electric substation
Electric substation Electric substation
Electric substation
 
GIS 400kv substation
GIS  400kv substationGIS  400kv substation
GIS 400kv substation
 
Underground cable
Underground cableUnderground cable
Underground cable
 
Vacuum circuit breaker selection of circuit breakers
Vacuum circuit breaker selection of circuit breakersVacuum circuit breaker selection of circuit breakers
Vacuum circuit breaker selection of circuit breakers
 
Conductor types and sizes
Conductor types and sizesConductor types and sizes
Conductor types and sizes
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substation
 
Conductors used in transmission line
Conductors used in transmission lineConductors used in transmission line
Conductors used in transmission line
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substation
 
Lv switchgear & lv cable sizing
Lv switchgear & lv cable sizingLv switchgear & lv cable sizing
Lv switchgear & lv cable sizing
 
Electrical Grid Substation
Electrical Grid SubstationElectrical Grid Substation
Electrical Grid Substation
 

Andere mochten auch

Gis substation
Gis substationGis substation
Gis substationAsif Eqbal
 
11.[21 28]voltage stability improvement using the 21st century power transformer
11.[21 28]voltage stability improvement using the 21st century power transformer11.[21 28]voltage stability improvement using the 21st century power transformer
11.[21 28]voltage stability improvement using the 21st century power transformerAlexander Decker
 
Under ground cables
Under ground cablesUnder ground cables
Under ground cablesParth Kharva
 
UNDER GROUND CABLE (TYPES OF CABLE)
UNDER GROUND CABLE (TYPES OF CABLE)UNDER GROUND CABLE (TYPES OF CABLE)
UNDER GROUND CABLE (TYPES OF CABLE)dharmesh nakum
 
Comparison of overhead and underground transmission lines
Comparison of overhead and underground transmission linesComparison of overhead and underground transmission lines
Comparison of overhead and underground transmission linesahmed usama
 
Sub stations-air insulated substations
Sub stations-air insulated substationsSub stations-air insulated substations
Sub stations-air insulated substationsbhanu lucky
 

Andere mochten auch (6)

Gis substation
Gis substationGis substation
Gis substation
 
11.[21 28]voltage stability improvement using the 21st century power transformer
11.[21 28]voltage stability improvement using the 21st century power transformer11.[21 28]voltage stability improvement using the 21st century power transformer
11.[21 28]voltage stability improvement using the 21st century power transformer
 
Under ground cables
Under ground cablesUnder ground cables
Under ground cables
 
UNDER GROUND CABLE (TYPES OF CABLE)
UNDER GROUND CABLE (TYPES OF CABLE)UNDER GROUND CABLE (TYPES OF CABLE)
UNDER GROUND CABLE (TYPES OF CABLE)
 
Comparison of overhead and underground transmission lines
Comparison of overhead and underground transmission linesComparison of overhead and underground transmission lines
Comparison of overhead and underground transmission lines
 
Sub stations-air insulated substations
Sub stations-air insulated substationsSub stations-air insulated substations
Sub stations-air insulated substations
 

Ähnlich wie Gas insulated transmission lines(gil)

FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWAR
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWARFACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWAR
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWARashwini kumar
 
UNDERGROUND HIGH POWER TRANSMISSION LINES
UNDERGROUND HIGH POWER TRANSMISSION LINESUNDERGROUND HIGH POWER TRANSMISSION LINES
UNDERGROUND HIGH POWER TRANSMISSION LINESVISHNU ARAVIND
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substationRaushanKumar582
 
Memba innovation &entrepreneurship 2015 05 17
Memba innovation &entrepreneurship 2015 05 17Memba innovation &entrepreneurship 2015 05 17
Memba innovation &entrepreneurship 2015 05 17Dr Maurizio Bragagni MBA
 
Internship ppt(santhosh).pptx
Internship ppt(santhosh).pptxInternship ppt(santhosh).pptx
Internship ppt(santhosh).pptxBasavarajbanakar6
 
220kv-switch-yard-ppt.pptx
220kv-switch-yard-ppt.pptx220kv-switch-yard-ppt.pptx
220kv-switch-yard-ppt.pptxssuser1b3e431
 
Underground cables/sanjeet-1308143
Underground cables/sanjeet-1308143Underground cables/sanjeet-1308143
Underground cables/sanjeet-1308143sanjeet kumar
 
Installation, testing and jointing of lt and ht power cables up to 33 kv
Installation, testing and jointing of lt and ht power cables up to 33 kvInstallation, testing and jointing of lt and ht power cables up to 33 kv
Installation, testing and jointing of lt and ht power cables up to 33 kvAlexander Decker
 
Substation_fundamental.pptx
Substation_fundamental.pptxSubstation_fundamental.pptx
Substation_fundamental.pptxSatish Pydimarla
 
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...Thorne & Derrick International
 
Design and construction of underground cable transmission line
Design and construction of underground cable transmission lineDesign and construction of underground cable transmission line
Design and construction of underground cable transmission lineFazlur Rahman
 
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptx
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptxChapter 11 Introduction to Gas Insulation Substation (GIS).pptx
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptxborapring
 
Jmv presentation smart process plant -hurl 2017
Jmv  presentation  smart process plant -hurl 2017Jmv  presentation  smart process plant -hurl 2017
Jmv presentation smart process plant -hurl 2017Mahesh Chandra Manav
 
Presentation eee 413 (SF6 Gas C.B.)
Presentation eee 413 (SF6 Gas C.B.)Presentation eee 413 (SF6 Gas C.B.)
Presentation eee 413 (SF6 Gas C.B.)ArefinAbir
 

Ähnlich wie Gas insulated transmission lines(gil) (20)

Gil
GilGil
Gil
 
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWAR
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWARFACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWAR
FACULTY OF ENGINEERING & TECHNOLOGY , GURUKULA KANGARI UNIVERSITY ,HARIDWAR
 
Gagan
GaganGagan
Gagan
 
Deepak kumar
Deepak kumarDeepak kumar
Deepak kumar
 
UNDERGROUND HIGH POWER TRANSMISSION LINES
UNDERGROUND HIGH POWER TRANSMISSION LINESUNDERGROUND HIGH POWER TRANSMISSION LINES
UNDERGROUND HIGH POWER TRANSMISSION LINES
 
Gas insulated substation
Gas insulated substationGas insulated substation
Gas insulated substation
 
Memba innovation &entrepreneurship 2015 05 17
Memba innovation &entrepreneurship 2015 05 17Memba innovation &entrepreneurship 2015 05 17
Memba innovation &entrepreneurship 2015 05 17
 
Internship ppt(santhosh).pptx
Internship ppt(santhosh).pptxInternship ppt(santhosh).pptx
Internship ppt(santhosh).pptx
 
220kv-switch-yard-ppt.pptx
220kv-switch-yard-ppt.pptx220kv-switch-yard-ppt.pptx
220kv-switch-yard-ppt.pptx
 
GIS PRESENTATION.pdf
GIS PRESENTATION.pdfGIS PRESENTATION.pdf
GIS PRESENTATION.pdf
 
Conductix Wampfler Product Overview Cables
Conductix Wampfler Product Overview CablesConductix Wampfler Product Overview Cables
Conductix Wampfler Product Overview Cables
 
Underground cables/sanjeet-1308143
Underground cables/sanjeet-1308143Underground cables/sanjeet-1308143
Underground cables/sanjeet-1308143
 
Installation, testing and jointing of lt and ht power cables up to 33 kv
Installation, testing and jointing of lt and ht power cables up to 33 kvInstallation, testing and jointing of lt and ht power cables up to 33 kv
Installation, testing and jointing of lt and ht power cables up to 33 kv
 
Substation_fundamental.pptx
Substation_fundamental.pptxSubstation_fundamental.pptx
Substation_fundamental.pptx
 
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...
Nexans Cable Leads Keep High Voltage Energy Transmission Flowing - 110kV, 132...
 
Design and construction of underground cable transmission line
Design and construction of underground cable transmission lineDesign and construction of underground cable transmission line
Design and construction of underground cable transmission line
 
Sudkabel EHV XLPE Cable Terminations & Cable Joints
Sudkabel EHV XLPE Cable Terminations & Cable JointsSudkabel EHV XLPE Cable Terminations & Cable Joints
Sudkabel EHV XLPE Cable Terminations & Cable Joints
 
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptx
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptxChapter 11 Introduction to Gas Insulation Substation (GIS).pptx
Chapter 11 Introduction to Gas Insulation Substation (GIS).pptx
 
Jmv presentation smart process plant -hurl 2017
Jmv  presentation  smart process plant -hurl 2017Jmv  presentation  smart process plant -hurl 2017
Jmv presentation smart process plant -hurl 2017
 
Presentation eee 413 (SF6 Gas C.B.)
Presentation eee 413 (SF6 Gas C.B.)Presentation eee 413 (SF6 Gas C.B.)
Presentation eee 413 (SF6 Gas C.B.)
 

Kürzlich hochgeladen

How to Write a Good Scientific Paper.pdf
How to Write a Good Scientific Paper.pdfHow to Write a Good Scientific Paper.pdf
How to Write a Good Scientific Paper.pdfRedhwan Qasem Shaddad
 
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...Amil baba
 
Graphics Primitives and CG Display Devices
Graphics Primitives and CG Display DevicesGraphics Primitives and CG Display Devices
Graphics Primitives and CG Display DevicesDIPIKA83
 
Multicomponent Spiral Wound Membrane Separation Model.pdf
Multicomponent Spiral Wound Membrane Separation Model.pdfMulticomponent Spiral Wound Membrane Separation Model.pdf
Multicomponent Spiral Wound Membrane Separation Model.pdfGiovanaGhasary1
 
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...Sean Meyn
 
ASME BPVC 2023 Section I para leer y entender
ASME BPVC 2023 Section I para leer y entenderASME BPVC 2023 Section I para leer y entender
ASME BPVC 2023 Section I para leer y entenderjuancarlos286641
 
Technology Features of Apollo HDD Machine, Its Technical Specification with C...
Technology Features of Apollo HDD Machine, Its Technical Specification with C...Technology Features of Apollo HDD Machine, Its Technical Specification with C...
Technology Features of Apollo HDD Machine, Its Technical Specification with C...Apollo Techno Industries Pvt Ltd
 
Nodal seismic construction requirements.pptx
Nodal seismic construction requirements.pptxNodal seismic construction requirements.pptx
Nodal seismic construction requirements.pptxwendy cai
 
Mohs Scale of Hardness, Hardness Scale.pptx
Mohs Scale of Hardness, Hardness Scale.pptxMohs Scale of Hardness, Hardness Scale.pptx
Mohs Scale of Hardness, Hardness Scale.pptxKISHAN KUMAR
 
cloud computing notes for anna university syllabus
cloud computing notes for anna university syllabuscloud computing notes for anna university syllabus
cloud computing notes for anna university syllabusViolet Violet
 
OS Services, System call, Virtual Machine
OS Services, System call, Virtual MachineOS Services, System call, Virtual Machine
OS Services, System call, Virtual MachineDivya S
 
ChatGPT-and-Generative-AI-Landscape Working of generative ai search
ChatGPT-and-Generative-AI-Landscape Working of generative ai searchChatGPT-and-Generative-AI-Landscape Working of generative ai search
ChatGPT-and-Generative-AI-Landscape Working of generative ai searchrohitcse52
 
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdf
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdfsdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdf
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdfJulia Kaye
 
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...Gaurav Singh Rajput
 
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdf
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdfRenewable Energy & Entrepreneurship Workshop_21Feb2024.pdf
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdfodunowoeminence2019
 
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....santhyamuthu1
 
Test of Significance of Large Samples for Mean = µ.pptx
Test of Significance of Large Samples for Mean = µ.pptxTest of Significance of Large Samples for Mean = µ.pptx
Test of Significance of Large Samples for Mean = µ.pptxHome
 

Kürzlich hochgeladen (20)

How to Write a Good Scientific Paper.pdf
How to Write a Good Scientific Paper.pdfHow to Write a Good Scientific Paper.pdf
How to Write a Good Scientific Paper.pdf
 
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...
Popular-NO1 Kala Jadu Expert Specialist In Germany Kala Jadu Expert Specialis...
 
Graphics Primitives and CG Display Devices
Graphics Primitives and CG Display DevicesGraphics Primitives and CG Display Devices
Graphics Primitives and CG Display Devices
 
Multicomponent Spiral Wound Membrane Separation Model.pdf
Multicomponent Spiral Wound Membrane Separation Model.pdfMulticomponent Spiral Wound Membrane Separation Model.pdf
Multicomponent Spiral Wound Membrane Separation Model.pdf
 
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...
Quasi-Stochastic Approximation: Algorithm Design Principles with Applications...
 
ASME BPVC 2023 Section I para leer y entender
ASME BPVC 2023 Section I para leer y entenderASME BPVC 2023 Section I para leer y entender
ASME BPVC 2023 Section I para leer y entender
 
Lecture 4 .pdf
Lecture 4                              .pdfLecture 4                              .pdf
Lecture 4 .pdf
 
Lecture 2 .pdf
Lecture 2                           .pdfLecture 2                           .pdf
Lecture 2 .pdf
 
Technology Features of Apollo HDD Machine, Its Technical Specification with C...
Technology Features of Apollo HDD Machine, Its Technical Specification with C...Technology Features of Apollo HDD Machine, Its Technical Specification with C...
Technology Features of Apollo HDD Machine, Its Technical Specification with C...
 
Nodal seismic construction requirements.pptx
Nodal seismic construction requirements.pptxNodal seismic construction requirements.pptx
Nodal seismic construction requirements.pptx
 
Mohs Scale of Hardness, Hardness Scale.pptx
Mohs Scale of Hardness, Hardness Scale.pptxMohs Scale of Hardness, Hardness Scale.pptx
Mohs Scale of Hardness, Hardness Scale.pptx
 
cloud computing notes for anna university syllabus
cloud computing notes for anna university syllabuscloud computing notes for anna university syllabus
cloud computing notes for anna university syllabus
 
OS Services, System call, Virtual Machine
OS Services, System call, Virtual MachineOS Services, System call, Virtual Machine
OS Services, System call, Virtual Machine
 
ChatGPT-and-Generative-AI-Landscape Working of generative ai search
ChatGPT-and-Generative-AI-Landscape Working of generative ai searchChatGPT-and-Generative-AI-Landscape Working of generative ai search
ChatGPT-and-Generative-AI-Landscape Working of generative ai search
 
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdf
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdfsdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdf
sdfsadopkjpiosufoiasdoifjasldkjfl a asldkjflaskdjflkjsdsdf
 
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...
Lifting Plan | Lifting Plan for Different Process Equipment | Gaurav Singh Ra...
 
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdf
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdfRenewable Energy & Entrepreneurship Workshop_21Feb2024.pdf
Renewable Energy & Entrepreneurship Workshop_21Feb2024.pdf
 
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....
SATELITE COMMUNICATION UNIT 1 CEC352 REGULATION 2021 PPT BASICS OF SATELITE ....
 
Test of Significance of Large Samples for Mean = µ.pptx
Test of Significance of Large Samples for Mean = µ.pptxTest of Significance of Large Samples for Mean = µ.pptx
Test of Significance of Large Samples for Mean = µ.pptx
 
Lecture 2 .pptx
Lecture 2                            .pptxLecture 2                            .pptx
Lecture 2 .pptx
 

Gas insulated transmission lines(gil)

  • 2. INTRODUCTION TO GIL  Gil are composed of pipes that houses conductors in SF6 gas.  Gil are good alternative for transmission of extra high voltage(EHV).  Gil are used for both underground and overhead transmissions.
  • 3. WHY ONLY SF6 RATHER THAN AIR?  Electronegativity.  Dielectric strength.  Arc quenching ability.
  • 4. N2-SF6 MIXTURE.  Ecological factors.  Maintenance.
  • 5. STRUCTURE OF GIL • Conductors & enclosures. • Insulators. • Enclosure joint.
  • 6. GIL VS CONVENTIONAL LINES  Magnetic fields.  Noise.  Space.  Life span.
  • 7. RATINGS OF GIL(2nd generation)  Rated voltage: 230 kV – 550 kV  Rated current: 2500 A – 4000 A  Transmission capacity: 1000 MVA – 3800 MVA  Rated short-time current: 63 kA/3s  Rated Frequency: 50/60Hz  Capacitance: 55pF/m  Inductance: 220nH/m  Resistance: 10mW/km (typical)  Insulation gas: N2-SF6 mixture  Pipe materials: Aluminum alloys
  • 8. LAYOUT METHODS FOR INSTALLATIONS OF GIL 1. Aboveground installation. 2. Direct burial installation. 3. Vertical installation. 4. Tunnel installation.
  • 9. 1.ABOVE GROUND INSTALLATION • Gil are unaffected by high ambient temperature , intensive solar radiation or severe atmospheric pollution. • Corrosion protection is not required.
  • 10. 2.DIRECT BURIAL INSTALLATION • These systems are coted with continuous polyethylene to safeguard corrosion resistant aluminum alloy. • The land can be used for irrigation with minor restrictions.
  • 11. 3.VERTICAL INSTALLATION • Gas insulated tubular conductors can be installed without a problem at any gradient ,even vertically. • These are top solution especially for cavern hydropower plant.
  • 12. 4.TUNNEL INSTALLATION • The system stays accessible for easy inspection and high transmission capacity is ensured. • They can installed in a tunnel or shaft.
  • 13. ADVANTAGES • High transmission capacity • Low transmission losses • Low capacitance • High reliability • High operational safety (no fire risk, no external impact in case of internal failures). • No practical ageing of components • Very low external magnetic field • No interference with the communication systems
  • 14. DISADVANTAGES • Length of each GIL section is limited. • Earthquake resistant design must be considered. • SF6 gas is harmful to ozone.
  • 15. APPLICATIONS • Most of the installations are 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.
  • 16. Future applications • Long Distance AC-GIL. • Trans European Networks. • Offshore Wind farms. • Improved Reliability of Electric Power.
  • 18. Thank you PRESENTED BY S.SUJAY UNDER THE GUIDANCE OF MRS.V.SUDHA RANI