Offshore wind systems include long cables, multiple transformer stages, and fast-acting power electronics.
Switching events and controls interactions can create transient overvoltages that are not visible in RMS-only
studies.
Common transient drivers
- Energization and reclosing events on long HVAC/HVDC export systems.
- Transformer inrush and resonance with cable capacitance.
- Controls interactions between turbines, STATCOMs, and HVDC converters.
What to validate
- EMT study coverage for representative switching sequences and contingencies.
- Protection and control settings aligned with transient behavior.
- Commissioning test plan that ties back to study assumptions.