학술논문
Analytical Approximations of Critical Clearing Time for Parametric Analysis of Power System Transient Stability
Document Type
Periodical
Source
IEEE Journal on Emerging and Selected Topics in Circuits and Systems IEEE J. Emerg. Sel. Topics Circuits Syst. Emerging and Selected Topics in Circuits and Systems, IEEE Journal on. 5(3):465-476 Sep, 2015
Subject
Language
ISSN
2156-3357
2156-3365
2156-3365
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 analyze 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 nonlinearities present in the model.