Circuit for three-phase transmission system has reactive impedance selected or that can be selected so reactive power of system can be compensated at mains frequency or for harmonic(s)

摘要

The circuit has a reactive impedance (100) connected in series with the screen (20) or casing of a section of the system in which there is full or partial electrical insulation, a metal screen or a metal casing for a phase conductor. The impedance of the reactive impedance is selected or can be selected so that the reactive power of the system at mains frequency or for at least one harmonic can be compensated.