Risk-based framework for establishing and visualising operational constraints of power systems

This paper demonstrates a risk-based framework that can be used to establish operational constraints of power systems. The application of this methodology is illustrated on the areas of small disturbance stability and sub-synchronous resonance (SSR) in order to determine risk levels associated with various operating regions (conditions). By visualizing these risk areas, guidance for planning and operation of the power system can be provided. Furthermore, the way in which these risk areas are affected by various system contingencies, is also investigated to gain understanding of the risk performance of the network. The proposed methods are demonstrated using a meshed power system with capacitor series compensated AC tie lines.