TERNA, the Italian TSO, is planning new HVDC interconnections with neighboring countries including underground links based on VSC technology; short circuit transient studies of such links require accurate cable line modeling in a frequency range from dc to 10 kHz at least. The finite section approach was used to this purpose. Short-circuit transient simulation results evidenced significant temp...

This study evaluated spinal loads associated with lifting and hanging heavy mining cable in a variety of postures. This electrical cable can weigh up to 10 kg per metre and is often lifted in restricted spaces in underground coal mines. Seven male subjects performed eight cable lifting and hanging tasks, while trunk kinematic data and trunk muscle electromyograms (EMGs) were obtained. The eight...

Abstract: Models in high frequency range for underground power cable connections are essential for the interpretation of partial discharge (PD) signals arising e.g. diagnostic techniques. This paper focuses on modeling of power cable joints. A lumped parameter odel and a cascaded transmission line model are proposed based on scattering parameters (S -parameters) measurement on a 10 kV oil-fille...

8.17 Some Mechanical Principles Introduction Electric power can be transmitted or dis tributed either by means of underground cables or by overhead lines. The underground* cables are rarely used for power transmission due to two main reasons. Firstly, power is generally transmitted over long distances to load centres. Obviously, the installation costs for underground transmission will be very h...

These last years have pointed out a significant increase of the power that needs to be transported by underground power cables. As a consequence, large cross section conductors, up to 2500mm2 are now customarily used. The CIGRE group B1-03 has completed in 2005 a work that analyses the actual AC resistance of these large cross section conductors as a function of their design. The authors discus...

In this paper, the thermal field of underground power cable is solved using two intelligent techniques which are newly introduced for thermal assessment of power cables. A backpropagation neural network (BPNN) and an adaptive neuro-fuzzy inference system (ANFIS) models were developed to predict the cable temperature under geometrical parameter variations. The effect of cable spacing and cable b...

The modeling of single core cable has an important influence on the calculation sheath cross-connected grounding current and voltage. A suitable equivalent circuit can greatly reduce complexity model. In this paper, theoretical π type is analyzed, system analyzed. Then equation circulation induced voltage obtained. Finally, by simulating two kinds faults, fault location are summarized.