Extra-high voltage flexible direct current conversion device and converter station

The invention relates to an extra-high voltage flexible direct current conversion device and a converter station. The device comprises a plurality of converter bridge arms which are connected in parallel, the circuit structures of the converter bridge arms are the same, and each converter bridge arm comprises a plurality of power modules which are connected in parallel. During working, the power modules included in the converter bridge arms are turned on or turned off at the same time, so that the current in the converter bridge arms uniformly passes through the power modules. The power modules in the field of flexible direct-current power transmission are connected in parallel, so that larger current can pass through the current conversion device. As the current which can pass through the current conversion device is larger, the application range of the current conversion device is widened, and the current conversion device can be applied to a converter station with higher transmission power. 本申请涉及一种特高压柔性直流换