CURRENT-RISE LIMITATION IN HIGH-VOLTAGE DC SYSTEMS

摘要

In order to limit the current rise in a high voltage DC system, the current is led through a current rise limiter (2). The current rise limiter (2) has an inductance that increases with the current I through the current rise limiter (2) and/or with the time-derivative dI/dt of said current I. In such a system, the current rise limiter (2) has minor influence on normal operation, but it limits the rise rate of the current in case of a fault, thereby e.g. providing more time to switch the current off.