Arrangement for increasing the efficiency of high potential long distance lines

摘要

329,658. Siemens - Schuckertwerke Akt.-Ges. Aug. 27, 1928, [Covention date]. Divided on 318,095. Systems depending on two or more machines ; transmission, conductor arrangements.-The efficiency of high-potential long-distance lines is increased by compensating the self-inductance of the line by wattless-current, producers in series in the line and compensating independently the selfcapacity of the line by wattless-current producers in parallel to the line. The wattless-current producers are distributed along the line at intervals small compared with the natural wavelength of the currents in the line i.e. the wavelength corrresponding to the constants of the uncompensated line, and may be static condensers c and choking- coils ! l or may comprise synchronous machines, asynchronous phase-shifters &c. They are given fixed values determined by formulµ given in the Specification. The line presents ohmic resistance only, the transmission distance being limited only by this resistance and by heating of the line Bare conductors of large inductance and small self-capacity or cables of small inductance and large self-capacity may be used, the latter being better suited for large outputs and requiring smaller compensating condensers. 3-phase systems may be compensated. Specification 318,095 is referred to.