ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • Determination of threshold electric field of practical earthing systems by FEM and experimental work
    Mohamad Nor, N. ...
    In this paper, the results of an experimental study and finite-element method (FEM) of the impulse characteristics of simply built practical earthing systems consisting of 2, 3, and 4 rods are ... reported. These electrodes are installed at three outdoor test sites having nonuniform soil and different soil profiles to provide variation in the result analysis. The tests on these electrodes were intended to determine the nonlinear characteristics of earthing systems which can be seen from their voltage and current traces and reduction of their impulse resistance values. Two-rod electrodes in the highest soil resistivity profile showed the largest reductions in impulse resistance due to soil ionization compared with other earth electrodes. Computer simulations of all the nine earthing systems using the FEM are also conducted, which showed good agreement with the measured results. It was also found from FEM that threshold electric field Ec is dependent on the earthing systems configurations, soil profile, and impulse resistances.
    Source: IEEE transactions on power delivery. - ISSN 0885-8977 (Vol. 28, no. 4, Oct. 2013, str. 2180-2184)
    Type of material - article, component part
    Publish date - 2013
    Language - english
    COBISS.SI-ID - 17282070

    Link(s):

    http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6599000
    DOI

source: IEEE transactions on power delivery. - ISSN 0885-8977 (Vol. 28, no. 4, Oct. 2013, str. 2180-2184)
loading ...
loading ...
loading ...

Shelf entry