Testing and Commissioning of Protection and Control Systems in Traditional vs. Digitized MV Substations

This paper compares testing and commissioning activities for protection and control systems in traditional versus fully digitized medium voltage substations, using IEC 61850 communication standards. It examines five testing phases—panel testing, panel line-up testing, pre-commissioning testing, commissioning testing, and periodical testing—for applications like directional overcurrent protection and busbar earthing switch interlocking.