Reduction of disturbances in a power network

Details Reduction of disturbances in a power network Reduction of disturbances in a power network

H - Electricity

02

J

H02J 3/01 (2006.01)

Patent

CA 2097599

A method and a device in an electric power network (1), comprising an active filter (4) controllable via a control input (41), for reducing disturbances generated by a distubance source (6) located in and/or connected to the power network. A control member (8) is adapted, in dependence on the control deviation (DU) from a desired value (Y2iR) of at least one state variable (Y2i) sensed in the power network (1), to generate a control signal (C1) which is supplied to the control input (41). The control member (8) is adapted to transform the control deviation (DU) in a filter device (93) within a transfer function (FI) which simu- lates the inverse of the transfer function (F1') from the control signal (C1) to the control deviation (DU) and/or to filter the out- put signal of the controller in a filter device (943, 953, 956) without any phase shift.

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