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Underground power cable environment on-line monitoring and analysis

By James Lyall, Ghavameddin Nourbakhsh and Huan Zhao


Knowledge of cable parameters has been well established but a better knowledge of the environment in which the cables are buried lags behind. Research in Queensland University of Technology has been aimed at obtaining and analysing actual daily field values of thermal resistivity and diffusivity of the soil around power cables. On-line monitoring systems have been developed and installed with a data logger system and buried spheres that use an improved technique to measure thermal resistivity and diffusivity over a short period. Results based on long term continuous field data are given. A probabilistic approach is developed to establish the correlation between the measured field thermal resistivity values and rainfall data from weather bureau records. This data from field studies can reduce the risk in cable rating decisions and provide a basis for reliable prediction of “hot spot” of an existing cable circui

Topics: 090607 Power and Energy Systems Engineering (excl. Renewable Power), 090699 Electrical and Electronic Engineering not elsewhere classified, Conductivity, cables, Soil moisture, Thermal resistance, Underground cables, thermal diffusivity, underground cables, buried spheres, cable parameters, hot spot, on-line monitoring, probabilistic approach
Publisher: IEEE
Year: 2000
DOI identifier: 10.1109/PESS.2000.867629
OAI identifier:

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  6. (1999). he joined the Research Concentration in Electrical Energy at the Queensland University of Technology, Australia. He is currently studying towards a MEng in the area of underground power cable environment monitoring and analysis.

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