Thermal analysis of underground power cables using two dimensional finite element method

Load cycling of underground distribution cables including thermal soil resistivity variation with soil temperature and moisture content

“…According to IEC 60853-2 [13], the cable elements are represented by lumped parameters thermoelectric equivalent method (TEE). The analogy between thermal and electrical circuits can be used to calculate the temperature distribution in the cable elements and surrounding soil respecting time variation [16][17][18][19][20][21][22][23][24][25]. A TEE thermal model of underground cable is shown in Fig.…”

“…Using the finite element method, the transient heat conduction for underground cable system is given by (19) Usually smaller mesh means more accurate results, but the computing time gets significant as well. In some instances, computing time can increase over two times to improve accuracy by 1% for us that seems unreasonable.…”

“…Many studies discuss the thermal analysis of underground cables using analytical and numerical methods, and experimental investigation was performed [6][7][8][9][10][11][12][13][14][15][16][17][18]. Thermal analysis of underground power cables using two-dimensional finite element method is reported by the authors in [19][20][21]. IEC 60853-2 [13] presented a method for calculation of the cyclic and emergency current rating of cables.…”