Development of new techniques for dynamic security assessment of power systems
In power systems, dynamic simulation studies are required to ensure safe and secure operation of electrical grid. In these studies, different devices, such as generators and transmission lines, are represented by a mathematical model with a number of predefined parameters. The accuracy of the simulation studies highly depend on the models used for different components. As the devices become old, it is necessary to calibrate the model and fine-tune the parameters to maintain the accuracy of simulations. In the recent years, the installation of advanced measurement devices in power systems has made it possible to record synchronized voltages and currents in different parts of the network. It is one of the objectives of this research to use these synchronized measured quantities to fine-tune the parameters of dynamic model of the generators to improve the accuracy of dynamic simulation studies. This stage will result in a module called “Model Calibration”. In the second stage of the proposed research, a new module will be developed to detect subsynchronous resonance (SSR) in power systems. SSR is a phenomenon in which there is a coincidence between natural resonance frequencies of mechanical system of generator and electrical grid.
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