Evaluation of the effect of salt water and a counterpoise on the voltage profile of a HV power transmission line grounding system in a two layer with high resistivity soil
作者： S. Georges , F. Slaoui , P.J. Lagace , X.D. Do , J. Fortin
关键词:
摘要: Soil resistivity plays a key role in designing grounding systems of high voltage transmission lines and substations. This paper deals with an already service HV utility, it is 69 kV line power generation plant at one end transformation substation the other. What makes this case very interesting that installation located soil area, same time as being vicinity sea water low resistivity. It belongs to Hydro-Quebec does not have shield wire nor counterpoise. research highlights impact salt reducing potential rise during electrical fault effectiveness counterpoise when high. The method images from electromagnetics applied calculate rise. All results are validated by experimental measurements performed specialized field test group Hydro-Quebec.
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