| Case |
Description |
| 1 |
No frequency control (HVDC transmission power is set to 0.5 p.u.) |
| 2 |
Frequency control with Notch filter (HVDC transmission power is controlled within 0.5 ± 0.1 p.u.) |
| 3 |
Frequency control with Deadband (HVDC transmission power is controlled within 0.5 ± 0.1 p.u.) |