Grid Integration Lab (GIL) at IIT Bombay has developed an easy-to-implement analytical method to estimate disturbance size in a RE-dominant power system following a contingency, which can be used to predict frequency nadir.
The displacement of conventional generation by RE-Based Resources poses critical challenges to the frequency stability of the power systems. Such systems that provide little or no inertia results in a high Rate of Change of Frequency (RoCoF) and deteriorated frequency nadir/zenith following the disturbances. Prediction of frequency metrics, such as frequency nadir and RoCoF, immediately after disturbances will help grid operators take preventive/corrective actions to ensure secure and stable grid operation.
The proposed method uses active power measurements from a limited number of monitoring nodes and an adaptive bus admittance matrix for the disturbance size estimation. The estimated disturbance size is then used to predict frequency nadir using an ANN-based method.
Some of the findings from this work are due to be published in ๐ฐ๐ฌ๐ฌ๐ฌ ๐ป๐๐๐๐๐๐๐๐๐๐๐ ๐๐ ๐ท๐๐๐๐ ๐บ๐๐๐๐๐๐ and can currently be read as an Early Access article from the below-given link.