List of Articles high voltage Open Access Article Abstract Page Full-Text 1 - A Review of Partial Discharge Signals Occurrence in Polluted High Voltage Insulator Hosein Fadaeeasrami Faramarz Faghihi Hosein Mohammadnezhad 20.1001.1.25887327.2021.5.1.4.3 Open Access Article Abstract Page Full-Text 2 - HVDC Line Model for Load Frequency Control Using Harmony Search Algorithm Application Mohammadali Shahab Ghazanfar Shahgholian 20.1001.1.25887327.2021.5.1.5.4