Finding a closest saddle–node bifurcation in power systems: An approach by unsupervised deep learning

We propose a neural network using an unsupervised learning strategy for direct computation of closest saddle–node bifurcations, eliminating the need for labeled training data. Our method not only estimates the worst-case load increase scenarios but also significantly reduces the computational complexity traditionally associated with this task during inference time. Simulation results validate the effectiveness and real-time applicability of our approach, demonstrating its potential as a robust tool for modern power system analysis.