DC and AC Insulated Power Cables and Hybrid Transmission Lines: Insights, Operating Experiences and New Challenges

Dear Colleagues,

Presently, the power systems community is witnessing an ever-growing increase of power-insulated cable installations around the world, both underground and submarine in DC and AC.

This is due to several key reasons:

• To deal with the massive penetration of off-shore wind farms in the electrical networks;
• To strengthen the electrical networks by means of insulated cable interties, in order to increase the regulating energy of the electrical system;
• To cope with climate change and to increase the resilience of electrical grids, since insulated cables are immune to the effects of heavy snowfalls or strong winds;
• The opportunity to rationalize the territorial resources using motorway and railway infrastructures (existing or planned ones) for cable line installation within them.

This Special Issue focuses on all the topics related to DC and AC insulated power cable lines for energy transmission or distribution and to hybrid overhead-insulated cable lines. More specifically, the topics of interest include (but are not limited to) the following:

• Modeling of HVAC/HVDC cables, or of hybrid overhead-cable lines;
• Electrical and thermal simulations of meaningful operating configurations;
• Installations;
• Maintenance;
• Reliability/availability;
• Earthquake resilience;
• Fault location methods;
• Fault analyses;
• Ampacity computations;
• Measurement campaigns for meaningful installation conditions;
• New concepts in planning and design;
• Monitoring techniques;
• Dynamic thermal ratings;
• Comparison between entire cable lines and hybrid overhead-cable lines, including the burden on territory of overhead parts;
• Economic analyses;
• Management strategies for hybrid transmission lines;
• Insulation aging;
• Joints and terminations;
• Power losses in three-core HVAC submarine cables;
• New challenges in synergy between highway/railway infrastructures and power AC and DC cables (also review of existing installations).

Prof. Dr. Roberto Benato
Dr. Sebastian Dambone Sessa
Guest Editors

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