Open AccessIdentification of voltage stability condition of a power system using measurements of bus variables
Author(s) -
Hazarika Durlav,
Talukdar Bani Kanta,
Gupta Brajesh Mohan
Publication year - 2014
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2014.0263
Subject(s) - phasor , electric power system , units of measurement , voltage , ac power , slack bus , power (physics) , computer science , identification (biology) , voltage optimisation , electronic engineering , electrical engineering , engineering , power flow study , botany , biology , physics , quantum mechanics
Several online methods were proposed for investigating the voltage stability condition of an interconnected power system using the measurements of voltage and current phasors at a bus. For this purpose, phasor measurement units (PMUs) are used. A PMU is a device which measures the electrical waves on an electrical network, using a common time source (reference bus) for synchronisation. This study proposes a method for online monitoring of voltage stability condition of a power system using measurements of bus variables namely – (i) real power, (ii) reactive power and (iii) bus voltage magnitude at a bus. The measurements of real power, reactive power and bus voltage magnitude could be extracted/captured from a smart energy meter. The financial involvement for implementation of the proposed method would significantly lower compared with the PMU‐based method.