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1 RECENT ADVANCES IN ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES Proceedings of the 8th WSEAS International Conference on ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES (POWER '08) Venice, Italy, November 21-23, 2008 RECENT ADVANCES in Electrical Engineering A series of Reference Books and Textbooks Published by WSEAS Press ISSN: 1790-5117 ISBN: 978-960-474-026-0 RECENT ADVANCES IN ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES Proceedings of the 8th WSEAS International Conference on ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES (POWER '08) Venice, Italy, November 21-23, 2008 RECENT ADVANCES in Electrical Engineering A series of Reference Books and Textbooks Published by WSEAS Press Copyright 2008, by WSEAS Press All the copyright of the present book belongs to the World Scientific and Engineering Academy and Society Press.

2 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the Editor of World Scientific and Engineering Academy and Society Press. All papers of the present volume were peer reviewed by two independent reviewers. Acceptance was granted when both reviewers' recommendations were positive. See also: ISSN: 1790-5117 ISBN: 978-960-474-026-0 World Scientific and Engineering Academy and Society RECENT ADVANCES IN ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES Proceedings of the 8th WSEAS International Conference on ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES (POWER '08) Venice, Italy, November 21-23, 2008 Editors: Subhas C.

3 Misra, Harvard University, Roberto Revetria, Univ. degli Studi di Genova, Italy Les M. Sztandera, Philadelphia University, Mihaiela Iliescu, Politehnica University of Bucharest, Romania Azami Zaharim, Universiti Kebangsaan Malaysia, Malaysia Hamed Parsiani, University of Puerto Rico, Puerto Rico International Program Committee Members: Ajay Srivastava, INDIA Ali Alaei, IRAN Anastasios Drosopoulos, GREECE Ashwani Sharma, INDIA Athanasios Maglaras, GREECE Chang Soo Kang, KOREA Chi-jui wu, TAIWAN Costin Cepisca, ROMANIA Daniel Cristian Cismaru, ROMANIA Essam Hamdi, RWANDA F. V. Topalis, GREECE Geeta Negi, INDIA Haifeng Wang, UNITED KINGDOM Hartani Kada, ALGERIA Irina Oleinikova, LATVIA Janne Nerg, FINLAND JIRI KLIMA, CZECH REPUBLIC John Sakellaris, GREECE Julio Barros, SPAIN malrey lee, KOREA Mohammad Al-Muhaini, SAUDI ARABIA Monica Enache, ROMANIA N.

4 Y. A. Shammas, UNITED KINGDOM Petr Blaha, CZECH REPUBLIC Petre Tusaliu, ROMANIA Ravi Saxena, INDIA Sandeep Kumar Goel, INDIA Sejid Tesnjak, CROATIA (HRVATSKA) Septimiu Mischie, ROMANIA Sorin Enache, ROMANIA Victor Petrushin, UKRAINE Yasser Hegazy, EGYPT Zahra Moravej, IRAN Preface This book contains the proceedings of the 8th WSEAS International Conference on ELECTRIC POWER SYSTEMS, HIGH VOLTAGES, ELECTRIC MACHINES (POWER '08) which was held in Venice, Italy, November 21-23, 2008. This conference aims to disseminate the latest research and applications in Generation, Transmission & Distribution Planning, Transmission & Distribution Equipment, Electricity Demand Management, Control Strategies, Environmental Issues and Impacts, SCADA/EMS and Information Systems, Power Electronics Applications, Thermal Power and other relevant topics and applications.

5 The friendliness and openness of the WSEAS conferences, adds to their ability to grow by constantly attracting young researchers. The WSEAS Conferences attract a large number of well-established and leading researchers in various areas of Science and Engineering as you can see from Your feedback encourages the society to go ahead as you can see in The contents of this Book are also published in the CD-ROM Proceedings of the Conference. Both will be sent to the WSEAS collaborating indices after the conference: In addition, papers of this book are permanently available to all the scientific community via the WSEAS E-Library. Expanded and enhanced versions of papers published in this conference proceedings are also going to be considered for possible publication in one of the WSEAS journals that participate in the major International Scientific Indices (Elsevier, Scopus, EI, ACM, Compendex, INSPEC, CSA.)

6 See: ) these papers must be of high-quality (break-through work) and a new round of a very strict review will follow. (No additional fee will be required for the publication of the extended version in a journal). WSEAS has also collaboration with several other international publishers and all these excellent papers of this volume could be further improved, could be extended and could be enhanced for possible additional evaluation in one of the editions of these international publishers. Finally, we cordially thank all the people of WSEAS for their efforts to maintain the high scientific level of conferences, proceedings and journals. Table of Contents Keynote Lecture: Multivariate Data Completion or Addition on a Single Curve Representation of a Hyperrectangulargrid via Fluctuation Suppression 11 Metin Demiralp Plenary Lecture I: The Experimental Determination and Numerical Simulation of the Dynamic Insulation of a Large Consumer Unit 13 Flavius Dan Surianu Plenary Lecture II: Finite Element Method Simulation for Rapid Prototyping 14 Mihaiela Iliescu Application of Genetic Algorithm to Distribution Network Expansion Planning with Distributed Generation 15 Majid Gandomkar Sliding Modes Control with Interconnected Observers for a Special Class of Nonlinear Systems.

7 Application to the Induction Moto Without Mechanical Sensor 21 Chouya Ahmed Optimal Bidding Curves for an Energy Service Provider in Iran Electricity Market 28 Shahram Jadid and Mojgan Ladan Probabilistic Power Flow Using a New Instrument Designed for Stochastic Power System Analysis 36 Constantin Barbulescu, Gheorghe Vuc and Stefan Kilyeni Speed Control in Fuzzy Direct Torque Control Induction Motor Drives 47 and Modelling the Trees Growth-Current and Losses in Solid Electrical Insulations 55 Nac ra Rouha Identifying Critical Measurements in the Power System Network 61 Kenedy Aliila Greyson and Anant Oonsivilai An Improvement on Detection of Airgap Eccentricity and Bearing Damage of Induction Motors 67 Ilker Ozelgin A New Voltage Sag and Swell Compensator Switched by Hysteresis Voltage Control Method 71 Amir Ahmad Koolaiyan, Abdolreza Sheikholeslami and Reza Ahmadi Kordkheili New Approach Regarding the Kinematics Characteristics Analysis of Circuit Breakers 77 Maricel Adam, Adrian Baraboi.

8 Catalin Pancu and Sorin Pispiris New Possibility for the Electroerosion Estimation of the Circuit Breakers Contacts 81 Catalin Pancu, Adrian Baraboi, Maricel Adam and Costica Roman Energy Compression Based on Wound Transmission Lines Network for Pulsed Power Applications 85 Arvin Nikjamal and Abolfazl Vahedi Real-Time Modeling of Synchronous Generator Based on PC 92 S. Helmy, Amged S. El-Wakeel, M. Abdel Rahman and M. A. Badr Switching Overvoltage When Disconnecting a Combined 400 kV Cable/Overhead Line with Permanently Connected Shunt Reactor 99 Claus Leth Bak and Kim Sogaard Switching Overvoltages in 60 kV Reactor Compensated Cable Grid Due to Resonance After Disconnection 109 Claus Leth Bak, Haukur Baldursson and Abdoul M.

9 Oumarou Single-Phase AutoReClosure ARC Failure on 400 kV Combined Cable/Overhead Line with Permanently Connected Shunt Reactor 118 Claus Leth Bak and Kim S gaard Influence of an Overhead Ground Wire on ELECTRIC Fields Around the HV Power Transmission Line 128 A. Isaramongkolrak, T. Kulworawanichpong and P. Pao-La-Or Harmonic Detection by DQ Axis with Fourier Algorithm for Hybrid Power Filters 133 K-L. Areerak Input Output Feedback Linearization Control of Induction Motor with Varying Parameters 139 F. Mehazzem, A. Reama, Y. Hamam and H. Benalla ANN/ DT Approach for Security Evaluation and Preventive Control of Power Systems 145 M. K. Shah, K. R. Niazi, C. M. Arora and P. K. Agarwal Power Quality Measurement for Line Frequency Coreless Induction Furnaces in MV Network 153 Angela Iagar, Gabriel Nicolae Popa And Corina Maria Dinis Loss Minimization in Parallel & Series Induction Heating Inverters Using Genetic Algorithm 159 , and Effect of Building the Substation 400/110 kV Ferizaj II on Electro Energetic System of Kosova 166 Ilir Shala, Rexhep Shaqiri and Ibrahim Gashi Study of the Impact of Non-rectangular Voltage Sags in Induction Motors 172 Javier Guerrero, Jose Soto.

10 Danny Robles and Emir Luquez Monte Carlo Simulation to Evaluate the Reliability Improvement with DG Connected to Distribution Systems 177 Fangxing Li and Nura Sabir Refinement of Single-phase Induction Motor Parameters Using Genetic Algorithms 183 N. Naew-Ngerndee and T. Kulworawanichpong Bi-objective Programming for Capacitor Planning Using Interactive Pareto Optimal with Advantage 189 Cheng-Chien Kuo and Po-Hung Chen Pumped Hydro Units Optimal Dispatch by Refined PSO 195 Po-Hung Chen, Cheng-Chien Kuo, Fu-Hsien Chen and Cheng-Chuan Chen A Single-Phase Controlled Rectifier with Unity Power Factor 201 R. Carbone Finite Element Approach to ELECTRIC Field Distribution Resulting from Phase-Sequence Orientation of a Double-Circuit High Voltage Transmission Line 207 A.