Power System Voltage Stability Assessment through Artificial Neural Network

Voltage stability is concerned with the ability of a power system to maintain acceptable voltages at all buses in the system under normal conditions and after being subjected to a disturbance. This paper presents a new technique to determine the static voltage stability of load buses in a power syst...

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Bibliographic Details
Published in:Procedia engineering 2012, Vol.30, p.53-60
Main Authors: Rahi, O.P., Yadav, Amit Kr, Malik, Hasmat, Azeem, Abdul, Kr, Bhupesh
Format: Article
Language:English
Subjects:
Artificial Neural Network (ANN)
Security Assessment
critical bus
Stability Index Prediction
Voltage stability
Voltage Stability Index
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Summary:Voltage stability is concerned with the ability of a power system to maintain acceptable voltages at all buses in the system under normal conditions and after being subjected to a disturbance. This paper presents a new technique to determine the static voltage stability of load buses in a power system for a certain operating condition and hence identifies load buses which are close to voltage collapse. A voltage stability index with respect to a load bus is formulated from the voltage equation derived from a two bus network and it is computed using Thevenin equivalent circuit of the power system referred to a load bus.. Buses with values of voltage stability factors close to 1 .0 are identified as the critical buses. And after that, an Artificial Neural Network is developed for voltage stability monitoring. In ANN applications, selection of input variables is an important aspect
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2012.01.833