An innovative fast voltage security assessment based on a hybrid ANN external equivalent approach

Application of Data-Driven Tuned Fuzzy Inference System for Static Equivalencing of Power Systems with High Penetration of Renewable Energy

“…Gaussian matrix elimination or reduction procedure is followed to reduce the admittance matrix of the network. Nevertheless, it does not provide accurate results for static security study [32,33]. In the extended ward method, the accuracy of the simple ward is improved by adding reactive power support.…”

“…e aforementioned conventional grid equivalencing techniques require not only the knowledge of complete topology and network parameters of the external system but also recalculation of the grid equivalent networks and power injections every time the grid state changes in one of the connected systems [8,23,25,37], which is not practical for modern power systems dominated by various renewable energy based generators (REGs) with frequent variations [15,16,32].…”