Without a clear understanding of the specific problem to be solved and which aspects that are important to capture, elaborate quantitative analysis may be of limited value. This paper presents the development of
a qualitative framework for analysing HILP events in power systems. By mapping aspects of power system HILP events to a bow-tie model, it provides a framework for defining, decomposing and delimitating decision problems related to such events. The framework may guide the analyst in the development and application of methods for quantitative analysis and for considering different types of uncertainties.