Atom search optimization GIS Harris Hawk's optimization PV water pumping STATCOM Sage-Husa algorithm Technology: general issues VFTO suppression calibration curves contamination cyber-attacks cyber-physical security damping busbar digital simulator discrete wavelet transform dynamic state estimation (DSE) energy efficiency ensemble square root filter (EnSRF) fault classification grey wolf optimizer grounding grid harmonics high gain DC-DC converter high-frequency inductance calculation hybrid MPPT algorithm insulators laser-induced breakdown spectroscopy magnetic field microgrid modified LUO converter