The paper briefly investigates the importance of power control of HVDC (high voltage direct current) control system in the HVDC projects and focus on the actual analysis and research on the realization of automatic power control in HVDC transmission. It has the important guiding significance for the implementation of automatic power control in HVDC transmission.

The present situation of the UHVDC (ultra high voltage direct current) power transmission project is introduced, based on ±800kV UHVDC power transmission project put into commercial operation, the function design and application of GWS-1 remote equipment are carried out, the communication capability on IEC61850 is supported, the temperature problem of HP rx2660 is resolved, the GWS-1 remote equipment could meet the requirement of the UHVDC power transmission project is approved, and there is guiding significance on the research of RCI of UHVDC power transmission project.