RISK ASSESSMENT OF GROUNDING SYSTEM IN ELECTRICAL SUBSTATION CASE STUDY: ABO ZAABLE SUBSTATION 66 kV

Abstract

: Grounding system in electrical substation is a main protection in power plant system that protects workers and equipment against lightning, overvoltage, switching and safe the operation continuity. So the design of the grounding system must be according to standard code IEEE 80 and it must be maintenance, test periodically. This research introduces risk assessment on the hazard that causes failure of grounding system. Preliminary risk assessment model (PRA) is used to identify, determine and show risks in grounding system to indicate the suitable control case. The 5-Step Process of Risk Management is also used to identify system hazards, before conducting the analysis of probabilities, severities and rank risk. So PHA gives preventive and protective values for unacceptable risks.