IEEE PES/IAS Lecture: Substation Ground Grid Design and Low Voltage System Electric Shock Protection

#Substation #ground #protection #grid #power #operations

Two related electric safety topics will be covered in the presentation. (1) A ground grid is required for substations to carry and dissipate current into earth under normal and faulty conditions for safety purposes. In the Ground Grid Design presentation, the common concepts, basic requirements, calculation methods, and procedure of ground grid design will be discussed. (2) Electric Shock is the main safety issue for low voltage systems. In this presentation, the concepts of low-voltage system earthing (equipment grounding) and protective (equipment grounding) conductor sizing methods are discussed along with the loop current and touch voltage calculations.

About the Speaker:

Dr. Liu has more than 40 years’ experience in electric power engineering. He received his PhD from the University of Wisconsin, Milwaukee. Before joining ETAP, Dr. Liu was with Cooper Power Systems as a senior power engineer. He is now a Senior Principal Electrical Engineer and has been with ETAP for 23 years. Dr. Liu’s research interest includes electric power system modeling, simulation, and software development. Electric safety has been one of his main research areas. Dr. Liu is a registered Professional Electrical Engineer in California. He is an IEEE PES and IAS senior member.