High voltage direct current (HVDC) systems are efficient solutions for the integration of large-
scale renewable energy sources with the main power grids. The rapid development of the …

Direct current (dc) power system protection presents a major challenge due to its unique
characteristics, namely the absence of natural zero current crossing points. Thanks to their …

In order to effectively reduce the commutation failure probability of the line commutated
converter (LCC) based high-voltage direct current transmission system, a new hybrid LCC …

Lots of dc circuit breakers have been proposed for protecting medium voltage dc systems.
However, they normally have one or more following limitations: low operational reliability …

With the development of a distributed generation, direct current (DC) load and energy‐
storage equipment, voltage‐source‐converter‐based medium‐voltage DC systems (VSC …

The series-type hybrid circuit breaker (S-HCB) is an effective solution for ultrafast dc fault
protection. However, the introduction of multiple energy storage (ES) capacitors and fully …

The series-type hybrid circuit breaker (S-HCB) is an attractive solution for fault protection in
medium and low-voltage dc distribution networks, effectively suppressing fault current rise …

A novel solid-state circuit breaker (SSCB) topology with two combined tripping schemes is
proposed in this article: 1) fault current bypass (FCB) tripping and 2) soft turn-off tripping by …

It has been widely accepted to apply dc circuit breakers (DCCBs) to protect dc grids.
Nevertheless, existing DCCBs have one or more following limitations: insulation recovery …

Featuring low power loss and high reliability, voltage source converter medium voltage
direct current (VSC-MVDC) systems have been widely employed for grid-tied renewable …