March 2010

Detection of acute hypotensive episodes via a trained adaptive network-based fuzzy inference system (ANFIS)

The aim of this study is to detect acute hypotensive episodes (AHE) and mean arterial pressure dropping regimes (MAPDRs) using ECG signal and arterial blood pressure (ABP) waveforms. To meet this end, the QRS complexes and end-systolic end-diastolic pulses are first extracted using two innovative modified Hilbert transform-based algorithms namely as ECGMHT and BPMHT. The resulted systolic blood pressure (SBP) and...

Author(s): A. Ghaffari, M. R. Homaeinezhad, M. Atarod, M. Akraminia, and H. Najjaran Toosi,

March 2010

Estimation of bifurcation point in multi-bus system using generator reactive power limit approach

This paper proposes an approach for estimating bifurcation point in multi-bus systems. The approach assumes that the generators would violate their Q-limits before the bifurcation point is reached. The result of this assumption clearly raises the voltages along the PV curve which consequently yield an infinitesimal error. Therefore the final estimated point can be obtained after a number of load flow solutions depending...

Author(s): Nwohu, Mark Ndubuka