DC FAULT PROTECTION IN CONVERTER-BASED DC DISTRIBUTION SYSTEMS

摘要

A method and apparatus for protecting a DC (DC) distribution system comprising one or more AC / DC converters and / or one or more DC / DC converters and one or more loads connected by DC buses is disclosed. An exemplary method performed in response to the detection of a fault somewhere in the system begins with limiting the output current of each of one or more of the converters so that each of the limited converters has a limited DC at or near the corresponding predetermined current levels And outputs a current. After the current limitation of one or more converters occurs, one or more protection devices in the system are activated, and the activation is dependent at least in part on the limited DC currents at or around predetermined current levels.