Title :
Investigation of grounding related problems in AC/DC converter stations
Author :
MelioPoulos, A. P Sakis ; Dunlap, J.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
4/1/1988 12:00:00 AM
Abstract :
An investigation of grounding-related problems in AC/DC substations is reported. The investigation is based on analytical studies and published experimental results. The following grounding related problems have been investigated: (1) ground potential rise in converter stations and DC grounds and its effect on safety; (2) touch, step, and transfer voltages in and around DC converter stations and DC grounds; and (3) effects on soil thermal stability during monopolar operation. Several conclusions have been reached, and the findings of the investigation are summarized in a proposed procedure for the safety assessment of DC grounding systems
Keywords :
earthing; safety; substations; AC/DC substations; DC grounding systems; DC grounds; ground potential rise; grounding; safety; soil thermal stability; step voltages; touch voltages; transfer voltages; Circuit faults; DC-DC power converters; Electrodes; Grounding; Land surface temperature; Power transmission lines; Substations; Transient analysis; Valves; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
