Title :
Influence of EMF induced by currents of overhead lines on RMS value of ice-melting current
Author :
Korovkin, Nikolay ; Goncharov, Valeriy ; Silin, Nikolay
Author_Institution :
Theor. Electr. Eng. Dept., St. Petersburg State Polytech. Univ., St. Petersburg, Russia
Abstract :
Ice covering represents a huge danger for transmission lines (TL) and ground wires (GW). It may lead to short circuits and even wires´ breakage. To prevent it, ice-melting procedure is required. The currents of operating TL influence on the de-icing process. A mathematical model of the ice-melting circuit was developed which makes possible the estimation of this influence. Parameters of the model are explained and calculated. The main ice-melting diagrams are considered. The methodology of determination of induced EMF value in ice-melting loop is described. Ice-melting current curves for different ice-melting diagrams and phases disposition variants are compared. RMS values of current are calculated. The difference is analyzed. Ways for future improvement of the model are described.
Keywords :
de-icing; electric potential; mathematical analysis; melting; power overhead lines; EMF; GW; RMS Value; TL; deicing process; electromotive force; ground wires; ice covering; ice-melting current curves; ice-melting diagrams; ice-melting loop; mathematical model; overhead lines; phases disposition variants; short circuits; transmission lines; wire breakage; Delays; Frequency locked loops; Integrated circuit modeling; Wires; ground wire; ice melting; ice-melting circuit; induced EMF;
Conference_Titel :
Young Researchers in Electrical and Electronic Engineering Conference (EIConRusNW), 2015 IEEE NW Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-7305-7
DOI :
10.1109/EIConRusNW.2015.7102266
