Abstract: A method of detecting an islanding operation of an electrical power generating system coupled to a power grid provided. The method includes monitoring a frequency that is indicative of an AC frequency on the power grid and monitoring reactive power on a coupling of the electrical power generating system to the power grid. The monitored frequency is processed to determine a rate of change of frequency, and the monitored reactive power is processed to determine a rate of change of reactive power. A detection parameter is determined from the determined rate of change of frequency and the determined rate of change of reactive power. An islanding operation of the electrical power generating system is detected if the detection parameter exceeds an islanding threshold value.

Abstract: A method and system of subsynchronous oscillations and interactions damping integrated in in a rotor converter based on an adaptive state feedback controller with two spinning vectors, and a Kalman filter whose parameters are optimized by minimizing maximum sensitivity under a constraint of positive damping for a plurality of sensible scenarios is provided. The damping signal generated by the damping module is applied either to a power proportional integer controller or to a current proportional integer controller.

Abstract: A method and system of subsynchronous oscillations and interactions damping integrated in in a rotor converter based on an adaptive state feedback controller with two spinning vectors, and a Kalman filter whose parameters are optimized by minimizing maximum sensitivity under a constraint of positive damping for a plurality of sensible scenarios is provided. The damping signal generated by the damping module is applied either to a power proportional integer controller or to a current proportional integer controller.

Abstract: The present invention relates to the field of generator technology. It is an object of the invention to control the stability in an electric grid in which a plurality of generators are connected providing electric power to the grid. A static exciter system includes a control device for controlling the field voltage of the field winding of at least two generators connected to a grid system via a busbar.

Abstract: The present invention relates to the field of generator technology. It is an object of the invention to control the stability in an electric grid in which a plurality of generators are connected providing electric power to the grid. A static exciter system includes a control device for controlling the field voltage of the field winding of at least two generators connected to a grid system via a busbar.