A collection and transmission system includes: a system direct current (DC) link configured for carrying power from a source to a grid; and alternating current (AC) to DC power converter modules coupled in series to the system DC link on a source side of the system DC link, each power converter module configured for being coupled to one or more sources on the source side, wherein each power converter module is configured to short circuit the DC terminals of the power converter module upon receipt of a respective command signal.