## Neuerscheinungen 2009Stand: 2019-05-06 |
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2009. 236 S.

Verlag/Jahr: VDM VERLAG DR. MÜLLER 2009

ISBN: 3-639-12727-7 (3639127277)

Neue ISBN: 978-3-639-12727-0 (9783639127270)

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Voltage sag is defined as a short reduction in

voltage magnitude for a duration of time. It is

considered to be the most common power quality

issue.

This book presents various voltage sag indices

proposed by electrical association organisations as

well as ones suggested by researchers. Furthermore,

mathematical descriptions of proposed voltage sag

indices are

derived. The indices are verified against various

types of load, loading levels, and line X/R ratios.

Mathematical analysis and verification against the

IEEE four and thirteen node test feeders concludes

in various versatile real time voltage sag indices

known as the combined voltage index and voltage

sag proximity index .

In order to illustrate the real time applicability

of the voltage sag indices they are used in

conjunction with a mitigation technique, where they

are proven to be efficient and discriminative.

Furthermore, a methodology is mathematically

developed and proposed for Interconnected System

Voltage Sag Prediction. The proposed methodology is

verified through successful application of the steps

on IEEE four bus interconnected system.

A. Polycarpou received his BEng, MSc and PhD in Electrical Power

Systems. He then worked as an international R&D engineer for

Siemens AG. He is currently a Lecturer at the Electrical

Engineering Department of Frederick University, Cyprus. His

research interests include electric arc phenomena,power

quality,and system stability analysis.