SAGGING CALCULATION FOR EACH LINEAR WIRE OF THREE-PHASE THREE-WIRE POWER TRANSMISSION LINE AT ITS LOAD MATCHING

摘要

FIELD: electricity.;SUBSTANCE: invention may be used at transmission of electric energy to consumers by means of a three-phase three-wire power transmission line (2), which load matching is attained in result of the fulfilment of certain conditions varying seasonally due to the change in primary parameters of the three-phase three-wire power transmission line determined with the calculation of sagging for each wire of the above line and respective distance between the linear wire and the ground (18). It is suggested to measure the seasonal change in wire sagging and the distance between the linear wire (5) and the ground by means of a distance meter (25). Matching includes the comparison of the actual and reference resistance of the load, voltage at the line end or currents supplied to the load. Initial data on voltage and current in the line can be obtained through interfaces or sensors made in a form of voltage or current transformers, spectrum analysers, voltage dividers and alternating-current shunts. In result of initial data processing the processor generates control signals for correcting bodies.;EFFECT: reduced losses and improved capacity of the power transmission line.;3 dwg