The specified technique of mutual electromagnetic influence definition on adjacent power lines

Abstract

The specified calculation method of difficult electrical power systems modes in phase coordinates allowing defining correctly mutual electromagnetic influences in near, intermediate and distant zones of integral of Carson is offered. For near and far zones the approximating expressions, and for the intermediate direct calculation of ranks to which the integral is reduced are used. Because of complexity of wires interferences in multi wire system it is required use of phase coordinates. Such opportunity the program Fazonord complex developed by authors which allows replacing the long multi wire line with the chained scheme. As in a program complex at calculation of the mode the trellised equivalent circuit of multi wire system by use of expressions for own and mutual resistance of separate wires is formed, the algorithm of Carson formulas realization accepted from the point of view of coverage of near, intermediate and distant zones and possessing sufficient speed for carrying out repeated calculations is required. The technique is realized in the program Fazonord complex developed in Irkutsk State Transport University with coverage of near, intermediate and distant zones. The program complex allows carrying out calculations of electrical power systems modes in phase coordinates and it is correct to determine the induced voltage taking into account the high harmonics at various sizes of width of rapprochement of adjacent power lines and values of earth resistance.