Interdependencies in HVDC grid protection: Impact of converter parameters and controls on DC fault‐ride‐through capabilities and protection system design

For future multi-terminal HVDC networks, protection systems based on DC circuit breakers (DCCBs) are envisioned to limit the loss of power transmission towards AC grid(s). Yet, system design is considered a major challenge—especially in multi-vendor setup. In particular, shall enable converters ride through faults without protective blocking. Several studies have performed sensitivity analyses determine DCCB properties and current-limiting inductor that required converter fault-ride-through (FRT), but themselves been simplified kept identical. However, setup, exact not known at time planning. Therefore, this paper investigates impact different DC-FRT behaviour, reveals implications design. Firstly, analytical approaches proposed mathematically derive potential factors converters’ FRT characteristics, also considering control architectures. Secondly, comprehensive EMT study demonstrates significant parameters behaviour. Analytical results compared with regard limitations applicability, such paper's findings can support development functional requirements for networks.