Identification of Critical Parameters Affecting System Loadability

Having demonstrated the effectiveness of bifurcation theory in analysing the small-disturbance stability and voltage stability of power systems, this chapter conducts a thorough study of power system loadability, jointly considering these types of stability. Utilising a statistical assessment framework similar to that employed in Chapter 4, this chapter identifies the most influential parameters affecting system loadability based on their impacts. The sensitivity studies undertaken assess the influence of various grid strength conditions and converter control schemes on the key parameters identified. Moreover, this developed framework is applied to perform a comprehensive evaluation of the performance of various VSC control schemes in large-scale power systems, encompassing scenarios with both single and multiple VSCs connected.