Describe the process of commissioning a new substation, including key tests and inspections performed before energization.

Commissioning a new substation is a critical process that ensures the substation is safe, reliable, and performs as designed before it is energized. The process involves a series of inspections, tests, and adjustments to verify that all equipment is properly installed, connected, and functioning correctly. Visual inspection is the first step. A thorough visual inspection is conducted to check for any signs of damage, missing components, or incorrect installation. Grounding system testing verifies the integrity of the grounding system. Ground resistance measurements are taken to ensure that the grounding system provides a low-impedance path to ground. Insulation resistance testing (Megger) measures the insulation resistance of all equipment to ground. Low insulation resistance indic....