Rogowski current sensor with active capacitance compensation

A method and a sensor for measuring a time derivative of an AC current flowing through a measurement object. The sensor comprising a Rogowski-Steinhaus-Chattock coil 204 and at least one partitioning line 206 drawn into coil turns of the Rogowski­ coil to minimizes a capacitive coupling of the coil turns of the Rogowski­ coil among one another and/or to at least one further electrical line by an electrical potential corresponding to the potential of the coil turns of the Rogowski coil impressed on the at least one partitioning line by active feedback. A voltage source, filter, amplifier and/or calibratable offset may be used for the active feedback. The active feedback of a potential may be effected at a plurality of locations on the partitioning line. There may be two partitioning lines, each by themselves referenced to a potential, between the coil turns of the Rogowski coil. There may be a conductor material having a high distributed resistance as a feed line at at least one location of the partitioning line.