Description: Influence of parameters of transmission on the size of transferrable on lines power is probed. A carrying capacity in relation to short lines is limited to only the active section of wire and possible overfall of tension along a line. The carrying capacity of distant electricity transmissions is limited to mainly the impendance of lines. Possibility of adjusting of current (to transferrable power) is rotined by adjusting of equivalent parameters of line by the special compensating devices. At passing to power less than natural the most surplus reactive-power of line corresponds the mode of idling. It is thus necessary to provide indemnification a reactive-power only parts of wave length exceeding k or failing to k . What anymore wave length of line, the less than relative length of area of line surplus power of which must be compensated. If wave length anymore, indemnification of area of line, exceeding, it is necessary to carry out the guided bypass reactors. Indemnification the reactive-power of desideratum to k the area – by the sources of reactive-power. Passing to power on distant distances above of natural power is uneffective.
Keywords: electricity transmission, carrying capacity, natural power, indemnification, bypass a reactor, source of reactive-power, impendance