A New Method for Assessment of Voltage Stability in Transmission and Distribution Networks

Voltage instability and collapse has been the subject of an increasing body of research over the past few years. In this paper, we proposed a new method of assessing static voltage stability in transmission and distribution networks. The proposed method (PM) is fast, accurate and robust. The expanded Newton-Raphson-Seydel (NRS) and Down-Hill (DH) algorithms are used in PM. Moreover, the elimination of the trigonometric terms in power flow equations and Jacobian matrix, will improve the convergence of PM algorithm. Standard CPF, CPF-GMRES and expanded NRS methods are compared to PM These algorithms are tested on 350 bus transmission and 1316 bus distribution networks. Copyright (C) 2010 Praise Worthy Prize S.r.l. - All rights reserved.