High-Performance Mathematical Models for the Analysis of Single Line-to-Ground Faults in Medium Voltage Electrical Networks | Chapter 8 | Techniques and Innovation in Engineering Research Vol. 9

 Setting the protections is owned by correctly and fast detect incorrect power lines. A correct background requires the use for the calculation of the calculated quantities in order to discover faults of numerical models that reproduce as correctly as possible the management of electrical networks all the while faults. In the case of medium-voltage energetic networks, the defect that occurs often in their operation is that of the alone line-to-ground type. The sizes characterizing aforementioned a fault are powerfully influenced for one method used to link the neutral of the medium voltage network to the ground, for one condition of the insulation of the medium potential network as well as for one value of the opposition at the location of the sin. The paper analyzes in what way or manner active capacity losses from the insulation of the medium potential network (insulation deficit angle δ), the value of the opposition at the fault neighborhood (Rf ), and the method used to combine the neutral of the medium energized matter network to the ground influence the value the fault current, the currents of the non-fluctuate lines and the zero-series voltage had connection with the medium voltage transport-bars in the transformer substation. The environments are established at which point the insulation of the medium generated power network can be considered perfect (covering loss angle δ = 0) contingent upon the method used to combine the neutral of the medium capacity network to the ground, the value of the change resistance at the blame location and the reign in which the medium voltage network manage. In the analysis created, real medium strength electrical networks were deliberate, and the results obtained utilizing the proposed numerical models were verified experimentally in the unchanging medium voltage energetic networks.

Author(s) Details:

Dumitru Toader,
Fundamentals of Physics for Engineers Department, Politehnica Unversity of Timisoara, Romania.

Marian Greconici,
Fundamentals of Physics for Engineers Department, Politehnica Unversity of Timisoara, Romania.

Daniela Vesa,
Politehnica Unversity of Timisoara, Romania.

Ildiko Tatai,
Fundamentals of Physics for Engineers Department, Politehnica Unversity of Timisoara, Romania.

Please see the link here: https://stm.bookpi.org/TAIER-V9/article/view/9990