Table 1: System parameters of operation and control modes of VSC-HVDC.

Operation modesControl parameters of VSC converters (p.u.)

1Constant DC voltage Constant AC active power
Constant AC reactive power Constant AC reactive power

2Constant DC voltage Constant AC active power
Constant AC reactive power Constant AC voltage

3Constant DC voltage Constant AC active power
Constant AC voltage Constant AC reactive power

4Constant DC voltage Constant AC active power
Constant AC voltage Constant AC voltage