A single-ended fault discrimination method for hybrid AC networks uses travelling-wave models to identify whether a fault occurs in an overhead or underground line section.

Study of DC fault ride-through and disturbance propagation in MTDC grids with grid-forming HVDC converters, highlighting protection, stability, and resilience challenges.

This study evaluates Partial Discharge Activity in Nomex 410 insulation exposed to high dv/dt square voltage. Based on endurance testing and UHF measurements, the results show that Partial Discharge Activity significantly reduces insulation lifetime in medium-frequency transformers.

This paper presents a Quasi-2-Level operated MMC for MVDC DAB converters. The proposed design reduces passive components while maintaining Zero-Voltage Switching through frequency adaptation and optimized converter design.

This study experimentally quantifies asymmetric losses in an Isolated Modular Multilevel DC-DC Converter (IM2DC) submodule, showing that low-side devices can dissipate up to twice the losses of high-side devices. A thermal imaging-based calorimetric method provides accurate, nonintrusive measurements, supporting future optimization of converter design, thermal management, and reliability.

The insertion of a dielectric barrier between the conductors in gas insulation can improve effectively the insulation performance in high voltage equipment such as MV gas insulated switchgear.