This Technical Brochure provides recommendations for high voltage outdoor GIS taking into consideration the engineering, design, procurement, fabrication, civil/structural works, construction, erection & commissioning, testing, and maintenance. These recommendations facilitate both manufacturers and users to make appropriate capital and operational investment decisions on lifetime management of outdoor GIS.

Table of content

1. Introduction
2. Standards, Guidelines and relevant technical documents

2.1. Service conditions relevant to outdoor GIS
2.2. Technical information to be exchanged between user and supplier
2.3. Site pollution severity
2.4. Corrosivity of the environment

3. Market requirements for outdoor GIS

3.1. Business Drivers
3.2. Technology Drivers
3.3. Environmental Driver
3.4. Local market requirements
3.5. Conclusion

4. Impact on outdoor GIS design including HV connection, layout, foundation and overall substation design

4.1. Introduction
4.2. Key considerations for outdoor GIS design engineering
4.3. Conclusion

5. Impact on operations and maintenance policy to ensure the outdoor GIS performance

5.1. Impact on operation and maintenance policy to ensure the outdoor performance
5.2. Strategic relevance of operation and maintenance policy for utilities and users
5.3. Experiences during Operation stage - Inspection
5.4. Experiences during Maintenance stage - Repair techniques and best practice experiences for outdoor GIS and MTS
5.5. Conclusion

6. Impact on Long-term reliability - Lifetime Management

6.1. Introduction
6.2. Key pillars of Long-term Reliability
6.3. Lifetime Management
6.4. PDCA cycle quality assurance in GIS
6.5. Conclusion

7. Economic Evaluation (outdoor vs indoor)

7.1. Project Life cycle Cost
7.2. Life cycle - acquisition cost
7.3. Life cycle - ownership cost
7.4. Life cycle - retirement cost
7.5. Recommendations/countermeasures to reduce life cycle cost of outdoor GIS vs. indoor GIS

8. Conclusion
Appendix A Definitions, abbreviations and symbols

A.1. Specific terms and definitions
A.2. Acronyms
A.3. Indoor and outdoor installations of GIS and MTS
A.4. Mixed Technology Switchgears (MTS)

Appendix B Links and references
Appendix C Case studies

C.1. An up-rating project from 275kV AIS to GIS with up-rating from 50kA to 63 kA
C.2. A refurbishment project of 500/275kV AIS substation [B36]
C.3. Establishing new outdoor substation with limited land area [B35]
C.4. Interviews regarding local requirements of outdoor and indoor GIS

Appendix D GIS Inspection and Maintenance Intervals

D.1. Typical minimum manufacturer required inspection and maintenance services and intervals
D.2. Typical minimum manufacturer required routine inspection menu and intervals in each region from manufacturer perspective

Appendix E Survey results

E.1. Introduction
E.2. Analysis
E.3. Questionnaire – MARKET REQUIREMENTS GIS

Additional informations

Publication type Technical Brochures
Reference 895
Publication year
Publisher CIGRE
ISBN 978-2-85873-600-3
Study committees
Working groups WG B3.57
File size 10 MB
Pages number 136
Price for non member 250 €
Price for member Free

Authors

T. SAIDA, Convenor (JP), N. UPPAL, Secretary (GB)

G. BECKER (US), H. KÖRNER (DE), H. MISHRA (IN), J. BESTEIRO (ES), J. KALLWEIT (DE), K. ITO (JP), K. NAKAMURA (JP), M. LEE (KR), M. NAEF (CH), S. ANNADURAI (IN), S. MICHAUD (FR), T. ZIESEMER(DE)

Corresponding Members
I. JOHNSTON (GB), D. SCHIFFBAUER (US),    N. OTAKA (JP)

Keywords

Outdoor GIS, Mixed Technology Switchgear, MTS, Environmental Stress, Substation Design, Substation Engineering, Long-Term Reliability, Lifetime Management, Operation and Maintenance, Asset Management, Life Cycle Cost, LCC, SF6 Gas Emissions, Corrosion, Site Pollution Severity, SPS, Condition Monitoring, High Temperature, Low Temperature, Solar Radiation, Life Extension

Impact on Engineering and Lifetime Management of Outdoor HV GIS
Impact on Engineering and Lifetime Management of Outdoor HV GIS