Generator parameter validation and calibration process based on PMU data

Models are used widely in power system planning and operations studies, and play an important role in predicting the grid's response and preparing for contingencies. The North American Electric Reliability Corporation (NERC) has adopted standards for generator model validation requiring periodic validation of generator, exciter, governor, and stabilizer models. Using synchrophasor data provides a unique opportunity for generator owners to verify their dynamic models while the units are on-line, avoiding time-consuming and costly off-line tests. This paper describes the tool that uses PMU data at the generator terminals to validate the models without taking them offline and also presents test results. This work is built on the research done by University of Texas Arlington. A two-step process of validation and calibration is used to identify whether the model is valid and then calibrate the model parameters if needed. The validation process has been tested with simulated data and field data.