The utility model provides a current conversion station relates to the DC transmission technology field for solve the problem that the scope of patrolling and examining is little that equipment fixing leads to of patrolling and examining in the current conversion station at valve room top. This current conversion station includes the valve room and the system of patrolling and examining that is connected with the valve room. Wherein, the system of patrolling and examining includes a plurality of equipment of patrolling and examining, and the valve room includes the room and is located the room, and follows a plurality of valve towers of arranging at room length direction interval, along the length direction of room, be provided with the equipment of patrolling and examining on the lateral wall of room. The equipment of patrolling and examining is including being used for carrying out the determine module that detects to the valve tower to reach the guide rail with determine module sliding connection, the perpendicular to is followed to the guide rail the direction on room ground install in on the lateral wall. This current conversion station is used for handing over DC conversion.