Abstract
An analytic approximation for the critical clearing
time (CCT) metric is derived from direct methods for power
system stability. The formula has been designed to incorporate
as many features of transient stability analysis as possible such as
different fault locations and different post-fault network states.
The purpose of this metric is to analyse trends in stability (in
terms of CCT) of power systems under the variation of a system
parameter. The performance of this metric to measure stability
trends is demonstrated on an aggregated power network, the
so-called two machine infinite bus network, by varying load
parameters in the full bus admittance matrix using numerical
continuation. The metric is compared to two other expressions
for the CCT which incorporate additional non-linearities present
in the model.
| Original language | English |
|---|---|
| Number of pages | 12 |
| Journal | IEEE Journal on Emerging and Selected Topics in Circuits and Systems |
| Early online date | 20 Aug 2015 |
| DOIs | |
| Publication status | Published - 2015 |
Keywords
- critical clearing time
- numerical continuation
- power system stability
- stability metrics
- swing equation
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Roberts, L. G. W., Champneys, A. R., Bell, K. R. W., & di Bernardo, M. (2015). Analytical approximations of critical clearing time for parametric analysis of power system transient stability. IEEE Journal on Emerging and Selected Topics in Circuits and Systems. https://doi.org/10.1109/JETCAS.2015.2467111