I will do insulation coordination in pscad

Slow-Front Overvoltage (SFO) Study

Line energisation and re-energisation switching surges

Capacitor bank switching transients

Load rejection overvoltage

Statistical overvoltage distribution (2% / mean values)

Temporary Overvoltage (TOV) Study

Single line-to-ground fault overvoltage on healthy phases

Load rejection and Ferranti effect assessment

Resonance and ferroresonance screening

System earthing factor calculation

Fast-Front Overvoltage (FFO) Study

Lightning surge propagation and attenuation

Surge arrester energy absorption verification

Equipment withstand margin against BIL/BSL

Very Fast-Front Overvoltage (VFFO) Study

GIS disconnector switching transients

Transferred surge analysis at GIS-cable/OHL interfaces

Internal and external VFFO assessment

Transformer Energisation & Inrush Study

Inrush current magnitude and duration

Sympathetic inrush in adjacent transformers

Point-on-wave switching strategy assessment

Protection relay coordination input (inrush restraint)

Transient Recovery Voltage (TRV) Study

Circuit breaker TRV rate-of-rise and peak assessment

Comparison against IEC 62271 breaker withstand capability

Fault clearing and out-of-phase switching scenarios