Garan Ya.A.

Selection of Stabilitrons and Modes of the Power Supplies of Reference High-Voltage Installations of the Direct Current

The problem of stabilitrons selecting for use in reference high-voltage installations of a direct current, calculation of a high voltage pulsations are observed at various modes of operation of such installations and definitions of methods of their amplitude decreasing. Problems of support of the stable power supplies of reference installation depending on characteristics of an alternating voltage source selection and the circuit design of this voltage transformation are analyzed.

A Study of the Causes of Electric Overlapping of the Middle Phase Insulator String of the Overhead Power Line

Two possible causes of electric overlapping of the middle phase insulator string are taken into consideration: the design defect of cap-and-pin insulator and the tangent tower impact on electric field intensity near insulator string. Experimental and theoretical researches of an electric field of cap-and-pin insulator strings of 330 kV overhead power line were carried out. The insulator string's three-dimentional electric field was calculated using finite element method.