Substation PSA Model

Chapter 6 describes how to create the substation model, the core of the PSA application, for grid security. The model consists of event trees and fault trees described in Chap. 4. First, the modelling principles and then the details of the model are presented. The properties of the model are based, to some extent, on the actual Finnish 400 kV transmission grid, which shows that the method is applicable to grids of real size. The example presented to illustrate the method is for line faults.