ETAP Transient Stability Validation Case Study

This document is a technical report detailing the ETAP Transient Stability validation case number TCS-TS-295. It presents a comparison between ETAP simulation results and actual fault-recorder measurements from an industrial power system in Japan. The study focuses on the post-fault system transient response after a three-phase fault, including the simulation of fault isolation and a generator trip. The modeled system consists of multiple voltage levels, on-site generators, motors, and lumped loads. The simulation events are aligned with recorded data, which includes a three-phase fault and subsequent circuit breaker operations. The report includes comparisons of instantaneous values of generator current, terminal voltage, and feeder fault current against field-measured data. The results indicate a close agreement between the simulation and field measurements, although slight discrepancies are noted due to the use of typical models and estimated loads. The findings are supported by graphical representations of the data.