An arrangement for changing current return path in a bipole direct current power transmission system, said arrangement comprising: a first converter station providing an interface of the bipole direct current power transmission system and having an active and a passive converter (14, 16) connected in series between an active pole line and a passive pole line via a first neutral bus, a first electrode line connected to the first neutral bus, a ground return transfer switch connected in a first current redirecting path (CRDP1) between the passive pole line and the first neutral bus, a metallic return transfer switch connected in the first electrode line, and a first control unit which, in the case of a change in return current path and upon control of power related to the active converter from a steady-state power level to zero, is configured to operate the ground return transfer switch to change between an open and a closed state, whereupon the power related to the active converter may be controlled back to the steady state power level and in case the change is a change between using the first electrode line and the passive pole line for a return current path, the first control unit being further configured to operate the metallic return transfer switch to change between an open and a closed state, where the state change of the metallic return transfer switch is the opposite of the state change of the ground return transfer switch. an active and a passive converter (14, 16) connected in series between an active pole line and a passive pole line via a first neutral bus, a first electrode line connected to the first neutral bus, a ground return transfer switch connected in a first current redirecting path (CRDP1) between the passive pole line and the first neutral bus, a metallic return transfer switch connected in the first electrode line, and a first control unit which, in the case of a change in return current path and upon control of power related to the active converter from a steady-state power level to zero, is configured to operate the ground return transfer switch to change between an open and a closed state, whereupon the power related to the active converter may be controlled back to the steady state power level and in case the change is a change between using the first electrode line and the passive pole line for a return current path, the first control unit being further configured to operate the metallic return transfer switch to change between an open and a closed state, where the state change of the metallic return transfer switch is the opposite of the state change of the ground return transfer switch. operate the ground return transfer switch to change between an open and a closed state, whereupon the power related to the active converter may be controlled back to the steady state power level and in case the change is a change between using the first electrode line and the passive pole line for a return current path, the first control unit being further configured to operate the metallic return transfer switch to change between an open and a closed state, where the state change of the metallic return transfer switch is the opposite of the state change of the ground return transfer switch.