FIELD: electricity.
SUBSTANCE: invention is referred to the electric power industry, and namely to the improvement in quality of electric energy in power transmission lines with distributed parameters of medium, high and superhigh voltage. A change in primary parameters of a power transmission line in the operation process is related to the change in a sagging value of a linear wire of the power transmission line. For three linear wires composing the three-phase three-wire power transmission line (PTL) (2) placed at poles (1) it is suggested to evaluate sagging by one distance meter (24) operating in real time and placed in a supporting structure of theses liner wires, which unites all linear wires by means of polymer insulators (3). Supporting structures made of the polymer insulators with distance meters are placed at some locations along the whole length of PTL. The distance meters are supplied by an electric energy accumulating battery (20), which, in its turn, receives electric energy from a solar battery (10). As a result of comparison of the values by the processor the actual sagging values for the wire are measured indirectly and considered in a special programme.
EFFECT: invention provides reduced losses of electric energy and increased capacity of PTL.
2 cl, 6 dwg
