The grounding generation sources in refineries Mexico: Experiences and recommendations

This paper shows the advantages and disadvantages of different grounding in Mexico´s refineries; as well as the opportunity to optimize the operating conditions, and correct maintenance procedures that may be reflected in preventive maintenance. The implementation of hybrid grounding methods for medium voltage generation sources for two of the six refineries in Mexico are presented. The grounding design of the typical electrical system during the early 70s is analyzed and how it should be improved with other grounding method. The modernization plans of the electric power system of four refineries are presented. Finally, some recommendations are provided for the power sector engineers seeking the same goal: safety and reliability in power systems.