Grounding effects of HV and MV underground cables associated with urban distribution substations

• Published in: IEEE transactions on power delivery Vol. 17; no. 1; pp. 111 - 116
• Main Authors: Nahman, J.M., Djordjevic, V.B., Salamon, D.D.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-01-2002; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cables; Dangerous; Electric potential; Electrical grounding; Electrodes; Fault currents; Grounding; Impedance; Magnetic analysis; Performance evaluation; Power cables; Soil; Substations; Underground cables; Voltage
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/61.974196

This paper derives a model for the evaluation of the performances of composite grounding systems of urban main distribution substations and associated power cable networks. The effects of the cables upon the dangerous voltages, transferred potentials and ground fault current distribution are encompassed including the conductive and magnetic coupling among grounding system elements, as well as the nonlinearity of cables sheaths impedances. An application example is presented, as are some experimental data.