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A descriptive approach for power system stability and security assessment

Tikdari, A. G., Bevrani, Hassan, & Ledwich, Gerard (2011) A descriptive approach for power system stability and security assessment. In Vasant, Pandian, Barsoum, Nader, & Webb, Jeffrey (Eds.) Innovation in Power, Control and Optimization: Emerging Energy Technologies. IGI Global, The United States of America, pp. 293-314.

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Abstract

Power system dynamic analysis and security assessment are becoming more significant today due to increases in size and complexity from restructuring, emerging new uncertainties, integration of renewable energy sources, distributed generation, and micro grids. Precise modelling of all contributed elements/devices, understanding interactions in detail, and observing hidden dynamics using existing analysis tools/theorems are difficult, and even impossible. In this chapter, the power system is considered as a continuum and the propagated electomechanical waves initiated by faults and other random events are studied to provide a new scheme for stability investigation of a large dimensional system. For this purpose, the measured electrical indices (such as rotor angle and bus voltage) following a fault in different points among the network are used, and the behaviour of the propagated waves through the lines, nodes, and buses is analyzed. The impact of weak transmission links on a progressive electromechanical wave using energy function concept is addressed. It is also emphasized that determining severity of a disturbance/contingency accurately, without considering the related electromechanical waves, hidden dynamics, and their properties is not secure enough. Considering these phenomena takes heavy and time consuming calculation, which is not suitable for online stability assessment problems. However, using a continuum model for a power system reduces the burden of complex calculations

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ID Code: 48122
Item Type: Book Chapter
Keywords: Power system dynamic analysis, Power system emergency framework, Electromechanical wave propagation
DOI: 10.4018/978-1-61350-138-2.ch010
ISBN: 978-1-61350-138-2
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright © 2012 by IGI Global
Copyright Statement: All rights reserved. No part of this publication may be reproduced, stored or distributed in any form or by any means, electronic or mechanical, including photocopying, without written permission from the publisher. Product or company names used in this set are for identification purposes only. Inclusion of the names of the products or companies does not indicate a claim of ownership by IGI Global of the trademark or registered trademark.
Deposited On: 19 Jan 2012 00:41
Last Modified: 21 Jan 2012 05:11

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