Vorrichtung zur Kompensation von Oberschwingungsströmen einer aus mehreren Leitern bestehenden Übertragungsstrecke

摘要

The invention relates to a device for compensating harmonic oscillation currents in a transmission line (2) consisting of several conductors (A, B, C). According to the invention, the device consists of at least one active filter (8) and a device (6) for generating a control signal (UG) for the active filter (8), in which said device (6) is connected on the input side to a measuring device (4) for the conductors (A, B, C) in the electrical transmission line (2) and on the output side to at least one active filter (8) and each active filter (8) is connected on the output side to a conductor (ES1, ES2) which is at zero voltage during normal operation. The complexity and cost of compensating harmonic oscillation currents by means of an active filter are considerably reduced.