Chapter 9Energy Margin Sensitivity To Changes In System Conditions

9.1 Introduction

In transient stability analysis of power systems the following question is often raised: given the stability results for a set of initial system conditions and disturbance scenario, how would these results be affected by a change in a certain key parameter or an initial system condition? The answer to this question is at the heart of many transient stability studies. To illustrate this point, let us assume that the analyst is seeking the transient stability limit for the loading of a particular power plant (1) by the conventional time simulation technique and (2) by using the TEF method. If the former method is used, the analyst will select a convenient indicator ...

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