Dielectric testing of gasinsulated HVDC systems

4. Basic phenomena and insulation properties at DC voltage and overvoltage stresses

4.1. Basic phenomena at DC voltage stress and field transition
4.2. Insulating properties of typical gas-solid insulation systems and influencing factors
4.3. Computational simulation and its verification
References Chapter 4

5. Typical defects and their PD characteristic

5.1. PD magnitude and PD behaviour of typical defects at DC voltage
5.2. PD Characteristics of typical defects at DC voltage
References Chapter 5

6. Background for Dielectric testing for proving the capability to withstand the phenomena in gas-insulated DC systems

6.1. Insulator in the gas-insulated environment: DC insulation system test
6.2. Particles – mitigation measures, detection and identification by analysis of pd data
6.3. Lifetime tests of insulating material
6.4. Prototype installation test
References Chapter 6

7. Recommendation for dielectric testing of gas-insulated HVDC systems

7.1. Scope
7.2. Summary of tests
7.3.  Definitions
7.4.  Test definitions
7.5. Test Overview
7.6. Type Tests
7.7. Routine Tests
7.8. On-site Tests
7.9.  Prototype installation test
References Chapter 7

8. Test equipment, test procedures

8.1. Superimposed voltage tests
8.2. Prototype installation test
References Chapter 8

9.Testing of interfaces between DC cables and gas-insulated DC systems

9.1. Differences in testing philosophies of dielectric testing of DC cables & DC gas-insulated systems; different test objectives
9.2. Stress comparison by means of simulation
9.3. Proposal for dielectric testing of interfaces between gas-insulated Dc systems and DC Cables
9.4. Further procedure on this subject
References of chapter 9

1.0 Conclusion

Appendix A Prototype Installation test

A.1. Statistical considerations for superimposed voltage testing
A.2. Impact of time parameters on breakdown voltage at superimposed Voltage testing
A.3. examples of CALCULATIONS FOR interruptions OCCURING during the prototype installation test
A.4. Superposition of 80 % Magnitudes with OLI and OSI
References Apppendix A

Appendix B Pulse sequence Analysis (PSA)

B.1 NoDi* Pattern
B.2. PSA using PSA@DC-Tool
References Apppendix B

Appendix C Mandatory type Tets for GIS and GIL

References Apppendix C

Appendix D Processes in the subcritical regime and the partial critical regime

D.1 Processes in the subcritical regime (SCR)
D.2 Processes in the partially critical regime (PCR)
References Appendix D

Appendix E Measurement techniques And Measurement results for space charges

E.1 Measurement techniques for space charges
E.2 Measurement results for epoxy insulating materials
References Appendix E