Summary
Read more on ELECTRAThis Technical Brochure presents concepts for on-site HV testing of gas-insulated switchgear after initial installation, repair, retrofit or extension. It reviews testing requirements in worldwide (inter)national standards and collects various return of experience from both OEMs and users for many different on-site HV testing scenarios. Technical drivers for reliability assurance and regulatory requirements are discussed and detailed activities before and after mobilisation to site are highlighted to help stakeholders with limited experience in the planning and layout design of their substation and boundaries.
Table of content
1. Introduction
1.1. Scope and chapter structure
1.2. Drivers for on-site HV testing of GIS – reliability assurance (commissioning, repair, extension, condition assessment)
1.3. Review of (inter)national standards requirement (IEC, IEEE, GOST, GBT/DGT, JEC)
2. Review of HV testing equipment and on-site testing methods for GIS
2.1. Overview
2.2. AC HV testing
2.3. PD measurement on HV GIS
2.4. PD measurement on MV and UHV GIS
2.5. LI (OLI)
2.6. SI (OSI)
3. Evolution of user specifications
3.1. Introduction
3.2. Return of experience
3.3. Standards and references for users
3.4. Drivers for user specification requirements
3.5. User considerations for on-site HV tests
3.6. User specifications for on-site testing
3.7. Report and records of on-site HV testing
3.8. Witnessing and supervision of HV tests
3.9. Post HV test and energisation
3.10. Summary and commentary on the evolution of user specifications and return of experience
4. Activities before mobilisation to site
4.1. Preparation of on-site testing – infrastructure, air clearance, and timing
4.2. Preparation of on-site testing – switching configuration
4.3. HV test equipment logistics
4.4. Agreement between OEM / user / third party concerning HV test procedures and acceptance criteria
4.5. Approval of level of test documentation
4.6. Technical requirement for on-site HV testing equipment and qualification of testing staff
5. Activities after mobilisation to site
5.1. Final confirmation between OEM / user / third party concerning HV test procedure and acceptance criteria
5.2. Verification of position and space requirement for HV testing equipment
5.3. Preparatory work to ensure safe working environment
5.4. Installation of on-site HV testing equipment
5.5. Installation of PD measuring equipment
5.6. Verification of switching configuration and final check of safe working area
5.7. Conduction and assessing of on-site HV tests of GIS
5.8. Procedures in case of irregularities
5.9. Conduction of work after completing on-site HV tests of GIS
5.10. Specific HV testing situations
APPENDIX A. Definitions and abbreviations
APPENDIX B. References
APPENDIX C. Example calculation for power supply consumption of on-site HV testing equipment
C.1. Types of HV test sets
C.2. Examples for frequency-tuned test sets with fixed inductance
C.3. Examples for power-frequency HV test sets
APPENDIX D. Example colour codes for safety isolation plans
D.1. Case study - proposal for HV GIS ‘shut down’ plan - repair after failure
D.2. Case study - method statement/colour code example for HV GIS extension including on-site HV test
APPENDIX E. Example investigation of calibration procedures for conventional PD measurements
E.1. Case study - proposal for calibration of conventional PD measurements on single-phase encapsulated HV GIS
APPENDIX F. Example for 'soak test' and energisation sequence
F.1. Case study - proposal for energisation sequence
Additional informations
| Publication type | Technical Brochures |
|---|---|
| Reference | 920 |
| Publication year | |
| Publisher | CIGRE |
| ISBN | 978-2-85873-625-6 |
| Study committees | |
| Working groups | WG B3.50 |
| File size | 14 MB |
| Pages number | 169 |
| Price for non member | 300 € |
| Price for member | Free |
Authors
M. REUTER, Convenor (DE), D. DORGAN, Secretary (IE)
A. M. AHLI (AE), A. LAUBI (AU), D. BENSBERG (2018-2022) (CH), J. LI (CN), E. EVERTZ (NL), S. NEUHOLD (CH), K. GAO (CN), C. SCHENK (CH), C. GINTING (ID), R. VOSSE (NL), H. KOETZ (2023) (CH), C. P. WOLF (DE), S. LABERGE (CA)
Corresponding Members
M. BECK (DE), A. CANHOTO (PT), G. BECKER (US), T. SAIDA (JP)
Keywords
Gas Insulated Switchgear, GIS, On-Site Testing, Commissioning, Withstand Testing, Partial Discharge, SF6 Gas Handling, Gas Quality, Leak Detection, Contact Resistance, Functional Testing, Diagnostics, Acceptance Testing
