PROTECTION CONTROL DEVICE FOR MULTI-TERMINAL DC POWER TRANSMISSION SYSTEM

摘要

Provided is a protection control device for a multi-terminal DC power transmission system that makes it possible to minimize chances of shutdown of a renewable energy power generation plant, adequately separate the section of a DC line of the multi-terminal DC power transmission system where a DC accident has occurred, and maintain the operation of the entire system. A protection control device for a multi-terminal DC transmission system in which a wind farm converter station equipped with an AC/DC converter that performs AC/DC conversion of wind farm power is connected to other AC/DC converter stations via a plurality of DC lines including DC breakers, the protection control device being characterized in having a function of suppressing power flowing into the DC line from the AC/DC converter station to which a wind farm is connected in the event of an accident on the DC line.