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ISAP '97

International Conference on

INTELLIGENT SYSTEM APPLICATIONTO POWER SYSTEMS

July 6-10, 1997Seoul, Korea

Proceedings

Editors

Young-Moon Park, Jong-Keun Park, Kwang Y. Lee

The Korean Institute of Electrical Engineerscommemorating its 50th year of foundation

Specical Session

SPECIAL SESSION 1Communications and Interfaces

Organizer : T.S. Dillon (La Trobe University, AUSTRALIA)

> Evaluation and minimization of optical impact of transmission lines 3H.-J. Koglin and P. Rheinert - Universitat des Saarlandes(Germany)Rainer Zewe - Poppenhager Grips GmnH(Germany)

• Design of an ergonomic interface for evaluation of the power system 8impact on environmentE. Pissaloux - Universite de Rouen (FRANCE)G. Laurent - EDF-DER(FRANCE)Th. Fernandez and P. Bonnin - Universite de Rouen (FRANCE)

• User interfaces for control center applications 14

Z A. Vale - University of Porto (Portugal)C. Ramos and L Faria - Polytechnic Institute of Porto (Portugal)

• Evaluation of the usability of power system control centres 19E. J. Chang, T.S. Dillon andD. Cook- La Trobe University (Australia)

SPECIAL SESSION 2Visualization of Power Systems

Organizer: Hiroshi Suzuki(Mitsubishi Electric Corp., Japan)

Panelists:Akihiko Yokoyama (Univ. of Tokyo, Japan)R.D. Christie (Univ. of Washington, USA)

T.J. Overbye (Univ. of Illinois, USA)S.H. Kim(Korea Electric Power Corp., Korea)

Shoichi Muto (Tokyo Electric Power Company, Japan)

SPECIAL SESSION 3Fault diagnosis, alarm processing and supervision

- expert system and model-based approaches

Organizer : J-P.Krivine (Electricite de France, R&D Division, France)

Panelists :J-P.Krivine (Electricite de France, R&D Division, France)

T. S. Dillon (La Trobe University, Australia)D. Kuhlmann(University of Dortmund, Germany)

C- C. Liu(University of Washington, USA)R. M. SingerfArgonne National Laboratory, USA)

SPECIAL SESSION 4Nuclear Power Plant

Organizer: Robert E. Uhrig (University of Tennessee, USA)

• A Decomposition Method and a Meta-heuristic to Optimize Plutonium 43Stock ManagementL Herault, C. Privault - CEA-LETI (FRANCE)Y. Niquil, A. Voskanian, J. Guillot - Electricite de France (FRANCE)

• The Role of Anticipation in Intelligent Control Systems : A Neurofuzzy 50ApproachL. Xinqing, L. H. Tsoukalas - Purdue University (USA)

• Intelligent Surveillance and Calibration Verification in Power Systems 55Robert E. Uhrig, Darryl J. Wrest, J. Wesley Hines - University of Tennessee(USA)

• Model-based Nuclear Power Plant Monitoring and Fault Detection : 60Theoretical FoundationsRalph M. Singer, Kenny C. Gross, James P. Herzog, Ronald W. King, StephanWegerich - Argonne National Laboratory (USA)

• Application of a Model-based Fault Detection System to Nuclear Plant 66SignalsK. C. Gross, R. M. Singer, S. W. Wegerich, J. P. Herzog - Argonne NationalLaboratory (USA)R. VanAlstine, F. Bockhorst - Florida Power Corporation (USA)

• Development Strategies on an Integrated Expert System for the Improved 71Operation of Nuclear Power PlantsSoon-Heung Chang, Han-Gon Kim, Seong-Soo Choi - Korea Advanced Instituteof Science and Technology (KOREA)

Technical Sessions

SESSION 01: Power System Stabilization

• Tuning of Power System Damping Controllers Using Genetic Algorithms 79A.L.B. do Bomfim, G. N. Taranto, Djalma M. Falcao - Federal University of Rio De Janeiro(BRAZIL)

• Stabilization of Multi-Machine Power System Using Variable Series Capacitor with 84Hco Control TheoryGoro Fujita, Ryuichi Yokoyama - Tokyo Metropolitan University (JAPAN)Daisuke Makita, Shigeru Takeuchi, Goro Shirai - Hosei University (JAPAN)

• Improvement of Multi-Machine Power System Stability by Cooperative Control of 89AVR and GOV Using Fuzzy-Genetic ControllerTomonobu Senjyu, Akihiro Miyazato, Katsumi Uezato, Han Kyung Hee - University of theRyukyus (JAPAN)

• Evaluation of Fuzzy Logic Excitation System on Analog Simulator 94Takashi Hiyama, Toshihiro Kita, Narifumi Tohjima, Takeshi Miyake - KumamotoUniversity (JAPAN)

• A Power System Stabilizer Based on Universal Model ^9Young-Moon Park, Jin-Ho Lee - Seoul National University (KOREA)Seung-Ho Hyun - Korea Railroad Research Institute (KOREA)Kwang Y. Lee - The Pennsylvania State University (USA)

• Stability Analysis Methods of Fuzzy Logic Controls for Power Systems 104Kevin Tomsovic - Washington State University (USA)

SESSION 02 : Fault Diagnosis

Experiences with Two Different Fault Diagnosis Systems Applying Expert System 111and Device-Specific ANN TechniquesE. Handschin, Dietmar Kuhlmann - University of Dortmund (GERMANY)V. Buhner-ZEDO in f+e-GmbH (GERMANY)W. Hoffmann - KEMA-ECC Europe (GERMANY)

' An Adaptive Self-Constructing RBF Neural Network for Fault Diagnosis of AC-DC 116SystemsT. N. Nagabhushana - S.J. College ofEngg (INDIA)H. S. Chandrasekharaiah - Indian Institute of Science (INDIA)V. K. Sood - Concordia University (CANADA)

< An Advanced Fault Diagnosis System & SCADA Simulator 1 2 2

Heung-Jae Lee, Chan-Ho Lim - KwangWoon University (KOREA)Bok-Shin Ahn - LG Industrial Systems (KOREA)Young-Moon Park - Seoul National University (KOREA)S. S. Venkata - Iowa State University (USA)

' Verification of Logic-Based Fault Diagnosis Systems Using Contextual 127Representation of Domain InstancesMingguo Hong. Chen-Ching Liu, Gary W. Rosenwald - University of Washington (USA)Marino Sforna - Centro Ricerca di Au'tomatica (ITALY)

SESSION 03 : Alarm Processing

GEMO:A Model-Based Approach for an Alarm Processing Function in Power 135Distribution NetworksPhilippe Laborie, Jean-Paul Krivine - Electricite de France (FRANCE)

• A Tolerant Event Recogniser and Alarm Filter Based on Sequential Pattern 142Matching under Introduction into the National Dispatching CentrePeter Kadar, Attila Kovacs, Attila K. Mergl - DYNAdata Ltd. (HUNGARY)

• Development of Intelligent Alarm Processor for the Mass Rapid Transit System of 147TaipeiMen-Shen Tsai - Chinese Culture University (TAIWAN)Yen-Kuang Lin, Ying-Yi Hong - Chung-Yung University (TAIWAN)Yun-Ching Tsuei- Taipei City (TAIWAN)

• Alarm Processing Based on Associative Neural Memories 152Alexandre P. Alves da Silva, A. H. F. Insfran, Germano Lambert-Torres - Escola Federalde Engenharia de Itajuba (BRAZIL)

SESSION 04 : Unit Commitment

• Unit Commitment Using Dynamic Programming for Thermal and Pumped-Storage Hydro 159Power PlantsTakashi Nagasawa, Kennichi Kawata, Nohkazu Toshida, Yoshiyuki Kurebayashi - Kansai ElectricPower Co. (JAPAN)Toshiyuki Sawa, Mitsuo Kinoshita, Yuuji Nakata - Hitachi, Ltd. (JAPAN)

• A Solution for Unit Commitment Using Lagrangian Relaxation Combined with Evolutionary 165ProgrammingHanzheng Duo, Hiroshi Sasaki - Hiroshima University (JAPAN)Takeshi Nagata - Matsue College of Technology (JAPAN)Hideki Fujita, Toshiaki Takayama - Chubu Electric Power Co. (JAPAN)

« A Genetic Algorithm with Local Search for Unit Commitment 170A. H. Mantawy, Youssef L. Abdel-Magid, Shokri Z. Selim - King Fahd University of Petroleum andMinerals (SAUDI ARABIA)

• A New Efficient Approach for Solving Unit Commitment 176Kun-Yuan Huang, Hong-Tzer Yang - National Cheng Kung University (TAIWAN)Ching-Lien Huang - Chung Yuan Christian University (TAIWAN)

• A Genetic Algorithm Approach to Solve the Unit Commitment Problem 182J. M. Arroyo, Antonio Conejo, N. Jimenez - Universidad de Malaga (SPAIN)

• A Parallel Genetic Algorithm for Unit Commitment ProblemK. J. Mun, H. S. Kim, J. H. Park, T. W. Park, S. H. Park, K. R. Ryu, S. H. Chung- Pusan National University (KOREA)

SESSION 05: Security

• An Expert Decision System for Substation Operating Security 197J. C. Tan, X. P Liao, P. Z. Wang, Z. X. Zhong - Guangxi University (CHINA)P. A. Crossley, F. M. Hughes - UMIST (UK)W. L. Liang, Q. W. Wang, J. Y. Cheng - Hechi Power Supply Bureau (CHINA)

- Multilayer Perceptron Neural Network Based Static Voltage Stability Assessment 202S. Repo, J. Bastman, E. Lakervi - Tampere University of Technology (FINLAND)

> Branch Overload Alleviation by Flexible Coordination of Generation Rescheduling 207and Load SheddingT. Niimura - University of British Columbia (CANADA)R. Yokoyama, G. Fujita, P.K. Goswami - Tokyo Metropolitan University (JAPAN)

• Application of Well-Initialized Neural Networks for Static Security Assessment of a 213Large-Scale Power SystemShyh-Jier Huang - Kaohsiung Polytechnic Institute (TAIWAN)Mohamed A. El-Sharkawi- University of Washington (USA)

< Location of Operating Points on the Dynamic Security Border Using Constrained 218Neural Network InversionCraig A. Jensen, Russell D. Reed, Mohamed A. El-Sharkawi, Robert J. Marks II -University of Washington (USA)

• Voltage Stability Analysis Considering Bifurcation Structure 223Sang-Ho Lee, Hong-Shik Cho, Jong-Keun Park - Seoul National University (KOREA)Heung-Jae Lee - Kwangwoon University (KOREA)

SESSION 06 : EMS & Optimal Power Flow

• Knowledge-Based Systems for Power System Control Centers : Is Knowledge the 231Problem?Zita A. Vale - University of Porto (PORTUGAL)Carlos Ramos, Luiz Faria, Jorge Santos - Polytechnic Institute of Porto (PORTUGAL)M. Fernanda Fernandes, Couto Rosado, Albino Marques - REN-PortugueseTransmission Network (PORTUGAL)

Synthetic Acoustic Voice Output of a Restoration Training Expert System 236Gerhard Krost, Kambiz Salek - Duisburg University (GERMANY)

An Analysis of Decoupling Effects in Optimal Power Flow Problems 241Kyung-Bin Song, Jin-Boo Choo, Dong-Hoon Jeon, Si-Woo Park - Korea Electric PowerResearch Institute (KOREA)

Data Mining into a Control Center Database via Rough Set Techniques 246Germano Lambert-Torres, Alexandre P. Alves da Silva, Luiz Eduardo Borges da Silva -Escola Federal de Engenharia de Itajuba (BRAZIL)Victor Hugo Quintana - University of Waterloo (CANADA)

• An Intelligent Graph Based Object Data Model for Energy Management System 251M. R. Bhanu Prakash, H. S. Chandrasekharaiah - Indian Institute of Science (INDIA)

SESSION 07: Protection

Optimization of Artificial Neural Network Structure for Power System Protection 259ProblemsZhihong Chen, Jean-Claude Maun - Free University ofBlussels (BELGIUM)

• High Impedance Ground Fault Detection Using Neural Networks in Distribution 264SystemsHwa-Seok Lee, Sang-Sung Lee, June-Ho Park, Seong-Hwan Jeong - Pusan NationalUniversity (KOREA)Jung-Won Jung - Kyunsung University(KOREA)

• A Digital Protective Relaying Using a Fuzzy Theory for Power TransformerProtectionChul-Won Park, Soo-Kyoung Kim, Myong-Chul Shin - Sung Kyun Kwan University(KOREA)Hee-Seok Suh - DooWon Tech. College (KOREA)

• An Approach to Speed up a Differential Equation Based Distance Relay Using 274Feedforward Artificial Neural NetworksK R. Cho - Hyosung Industries Co. (KOREA)Yong-Cheol Kang, Sung-Soo Kim, Jong-Keun Park - Seoul National University (KOREA)Sang-Hee Kang - Myong-Ji University (KOREA)Kwang-Ho Kim - Kangwon National University (KOREA)

• Intelligent Digital Distance Relay 279K. K. Li - The Hong Kong Polytechnic University (HONG KONG)L L Lai - City University (UK)A. K. David - The Hong Kong Polytechnic University (HONG KONG)

• A Digital Distance Relaying Algorithm Based on Artificial Neural Network 284Sang-Hee Kang, Sang-Tae Kim, Kuen-Sang Park - Myongji University (KOREA)Yong-Cheol Kang, Jong-Keun Park - Seoul National University (KOREA)

SESSION 08: Control

' Self Tuning Fuzzy Logic Controllers Using Genetic Algorithm : HVDC System 291ApplicationJae-Young Yoon, Dong-Wook Park - Korea Electrotechnology Research Institute(KOREA)Gi-Hyun Hwang, June-Ho Park - Pusan National University (KOREA)

' An ANN Type Output Feedback Excitation Control to Damp the Sub-Synchronous 296ResonanceHeung-Jae Lee, Min-Goo Kim, Chul-Kyun Lee, Wha-Yeong Yim - KwangWoon University(KOREA)

• Adaptive Neuro-Control System of Generator with Multi-Step Ahead Identifier 301Jun-ichi Nagahara, Akihiko Yokoyama - University of Tokyo (JAPAN)

< Synchronizing and Damping Torque Coefficients Evaluation Using Genetic 306AlgorithmsYoussefL. Abdel-Magid, M. M. Dawoud, M. Bettayeb - King Fahd University of Petroleumand Minerals (SAUDI ARABIA)

> Voltage Regulation Methods Based on Artificial Neural Networks for Distribution 312Systems Interconnected with Dispersed Storage and Generation SystemsD.S. Rho, J.E. Kim, E.S. Kim, H.Y. Kim - Korea Electrotechnology Research Institute(KOREA)Hiroyuki Kita, Jun Hasegawa - Hokkaido University (JAPAN)

< ULTC Control of Substation Using Fuzzy Logic 317Hong-Gyun Kim, Hong-Shik Cho, Sung-Soo Kim, Jong-Keun Park - Seoul NationalUniversity (KOREA)

SESSION 09 : Fault Identification

< Applications of Evolutionary Computations to the Prediction of Audible Noise from 325Overhead EHV AC Transmission LinesKwang-Ho Yang, Chiu Hwang - Korea Electrotechnology Research Institute (KOREA)Gi-Hyun Hwang, June-Ho Park - Pusan National University (KOREA)Jeong-Boo Kim, Dong I. Lee - Korea Electric Power Research Institute (KOREA)

• Distribution Fault Identification Using Fuzzy Logic-Based Decision Making System 331Chang-Jong Kim - University of Suwon (KOREA)Yong-Taek Oh - Korea University of Technology and Education (KOREA)

< A Kohonen Neural Network Approach for Transformer Fault Diagnosis Using 336Dissolved Gas AnalysisJae-Chul Kim, Yong-Han Yoon, Young-Jae Jeon, Do-Hyuk Choi - Soongsil University(KOREA)

• A Tabu Search Approach for Fault Section Estimation and State Identification of 341Unobserved Protective Relays in Power SystemsFushuan Wen - Zhejiang University (CHINA)C. S. Chang - National University of Singapore (SINGAPORE)

' Calculation of the Probability of a Critical Short-Circuit Current Using Artificial 348Neural NetworksG. J. Anders, G. L Ford - Ontario Hydro Technologies (CANADA)Ch. Gilbert, M. Zaremba - Universite du Quebec (CANADA)

SESSION 10 : Load Forecasting I: Neural Network Approach

Cascaded Neural Networks for Accurate Short-Term Load Forecasting 357Swee Sien Tan, Dipti Srinivasan, C. S. Chang, Minjun Yi - National University ofSingapore (SINGAPORE)Eng Kiat Chan - Power Automation Pte Ltd. (SINGAPORE)

' An Automatic Search of Feedforward Neural Network Architecture Based on 362Genetic Algorithms - Application to the Short-Term Load ForecastingMorgan Mangeas, Corinne Muller - Electricite de France Research Center (FRANCE)

• Short-Term Electric Load Forecasting Using a Recurrent Neural Network 367Dong C. Park, TaeHoon Park, SeungEok Choi - MyongJi University (KOREA)

• Application of CMAC for Short-Term Load Forecasting 372Tai-Ho Lee - University of Ulsan (KOREA)Kwang Y. Lee - The Pennsylvania State University (USA)

• Artificial Neural Network Approach to Load Forecasting for a Hybrid Electric 378VehicleJames A. Momoh, Yanchun Wang, Mahmoud Elfayoumy - Howard University (USA)Larry Viterna - NASA Lewis Research Center (USA)

SESSION 11: Reactive Power Planning

> An Efficient Method for Capacitor Placement with Parallel Tabu Search 387Hiroyuki Mori, Takanori Hayashi - Meiji University (JAPAN)

• Reactive Power Dispatch by Deterministic Annealing 392Kazuo Katou, Yoshiyuki Nakamura - Electric Power Development Co. (JAPAN)Luonan Chen, Hideya Tanaka - KCC Ltd. (JAPAN)

• Optimal Reactive Power Planning Using Evolutionary Algorithms 397Kwang Y. Lee, Frank F. Yang - The Pennsylvania State University (USA)

> Fuzzy Programming Based Generation Dispatch 402Chao-Ming Huang - National Cheng Kung University (TAIWAN)Hong-Tzer Yang - Chung Yuan Christian University (TAIWAN)Ching-Lien Huang - National Cheng Kung University (TAIWAN)

< Voltage Profile Optimization Using a Pyramid Genetic Algorithm 407Song K Lee, Kwang M. Son, Jong-Keun Park - Seoul National University (KOREA)

SESSION 12 : Power Plant & Control

' Boiler-Turbine Control System Design Using Modified Genetic Algorithms 415Ranjan Santra, Kwang Y. Lee - The Pennsylvania State University (USA)

• A New Approach to Neural Network Based Receding Horizon Optimal Control with 420Applications to Power PlantsYoung-Moon Park - Seoul National University (KOREA)Myeon-Song Choi - Myongji University (KOREA)Kwang Y. Lee - The Pennsylvania University (USA)

• An Effective Data Structure for Power Plant Disturbance Analyses 425Seung-Chul Lee, Suk-Hwan Yoon - Chung-Ang University (KOREA)

• Fuzzy Supervisor for Power Plant Cyclic Operation 431Raul Garduno-Ramirez, Kwang Y. Lee - The Pennsylvania State University (USA)

• Flexible Planning Representation of a Boiler Power Plant 436Luiz Edival de Souza - Escola Federal de Engenharia de Itajubci (BRAZIL)

SESSION 13 : D/L Reconfiguration

' The Use of a Genetic Algorithm for Power Loss Reduction via Reconfiguration of 443MV NetworksFrangois-Regis Monclar - Research and Development EDF (FRANCE)P. Verho, P. Jarventausta, M. Ka'renlampi - Tampere University of Technology(FINLAND)J. Partanen - Lappeenranta University of Technology (FINLAND)

< A New Feeder Route Determination Algorithm by Dijkstra Method and Tabu Search 448Koichi Nara, Yasuhiro Hayashi - Ibaraki University (JAPAN)S. Muto, K Tuchida - Tokyo Electric Power Company (JAPAN)

• Genetic Algorithm for Re-Configuration of Radial Load Balanced Distribution 453SystemKeeyoung Nam, Hyunchul Kim, Koichi Nara - Ibaraki University (JAPAN)

' A Genetic Algorithm for Network Reconfiguration Using Three Phase Unbalanced 458Load FlowHiroyuki Fudou, Takamu Genji - Kansai Electric Power Co. (JAPAN)Yoshikazu Fukuyama, Yosuke Nakanishi - Fuji Electric Corporate R&D (JAPAN)

• ANN-Based Distribution System Reconfiguration 463James A. Momoh, Yanchun Wang - Howard University (USA)D. Tom Rizy - Oakridge National Laboratory (USA)

A Study on the Reconfiguration Method in Multi-linked Distribution System 468Jeong-Tae Jang - Korea Electric Power Research Institute (KOREA)Kern-Joong Kim - Chung Nam National University (KOREA)

SESSION 14 : Economic Load Dispatch

Security-Constrained Multiarea Economic Load Dispatch Using Nonlinear 475Optimization Neural Network ApproachJizhong Zhu, C. S. Chang - National University of Singapore (SINGAPORE)

' Tuning of Hopfield Neural Networks for Economic Load Dispatch 480Kwang Y. Lee, Arthit Sode-Yome - The Pennsylvania State University (USA)June-Ho Park - Pusan National University (KOREA)

> A Lagrangian ANN for Economic Load Dispatch with Piecewise Quadratic Cost 485FunctionYong-Hwan Kim, Jai-Kil Chung, Seung-Chul Lee - Chung-Ang University (KOREA)

• Real Power Optimization with Load Flow Using Adaptive Hopfield Neural Network 490Kwang Y. Lee, Fatih M. Nuroglu, Arthit Sode-Yome - The Pennsylvania State University(USA)

• An Application of the Modified Hopfield Neural Network to the Economic Load 495DispatchYoung-Moon Park - Seoul National University (KOREA)Seung-Chul Lee - Chung-Ang University (KOREA)Hoon-Jin Bang - Seoul National University (KOREA)

SESSION 15 : Load Forecasting II: Expert System,Fuzzy Logic and Chaotic Approach

• A Daily and One Week Ahead Peak Load Forecasting Model Using an Analysis of 503Chaotic Time SeriesJae-Gyun Choi, Jong-Keun Park - Seoul National University (KOREA)Kwang-Ho Kim - Kangwon National University (KOREA)

• Development of a Short-Term Load Forecasting Expert System 508Jong-Keun Park - Seoul National University (KOREA)Kwang-Ho Kim - Kangwon National University (KOREA)Kab-Ju Hwang, Gwang-Won Kim - University of Ulsan (KOREA)Sung-Hak Kim - Korea Electric Power Co. (KOREA)

• Comparison of Prediction Performance of Chaotic Approach on Daily Peak Electric 514Power Demand of 9 Electric Power CompaniesKoyama Masaya, Taniguchi Minako, lokibe Tadashi - MEIDENSHA Corporation (JAPAN)

> Self-Organizing Fuzzy ARMAX Models for Short-Term Load Forecasting 518Chao-Ming Huang, Ching-Lien Huang - National Cheng Kung University (TAIWAN)Hong-Tzer Yang - Chung Yuan Christian University (TAIWAN)

• Fuzzy Logic Approach for Future Load Curve Forecasting Based on Similarity 524Tomonobu Senjyu, Shuzo Higa, Tang Yue-Jin, Katsumi Uezato - University of theRyukyus (JAPAN)

SESSION 16: Scheduling

• Evolutionary Programming Based Hydro-Thermal Scheduling with Variable Head 531UnitsJae-Chul Kim, Young-Sik Baek - Kyungpook National University (KOREA)

' Heuristic Power Unit Setpoint Assignment for Restoration 536Gerhard Krost, Udo Spanel - Duisburg University (GERMAN)

• Maintenance Schedul ing of Generating Units by Genetic-Enhanced Fuzzy Systems 541Shyh-Jier Huang - Kaohsiung Polytechnic Institute (TAIWAN)

• DESPRO - Expert System for the Scheduled Equipment Maintenance Analysis 546He"Ho de Barros Pinto, Eurico Salgado Sobrinho, Alberto Arkader Kopiler, HenildoMedeiros de Barros - CEPEL (BRAZIL)Viviane Morelli Rossi - VMR Consulting & Data Procession (BRAZIL)Monica V. F. tie Figueiredo, Fernando de Souza Midao, Simone Prado, Marcos Roitman,Manoel Luiz M. Mendonga - CEPEL (BRAZIL)Eduardo Barbosa Evangelista - UFRJ (BRAZIL)Paulo Gomes, Kazuo Haraguchi - ELETROBRAS (BRAZIL)Alexandre P. Alves da silva, Germano Lambert Torres - EFEI (BRAZIL)

SESSION 17: Methodology

Identif ication of Induction Motor Load Models in Power Systems Using Recurrent 555Neural NetworksD. C. Franklin, Andre Morelato - University of Campinas (BRAZIL)

An Approach Based on Genetic Algor i thm for Power Flow Calculation 560Tae-Hyung Lee, Myung-Suk Chae, Joong-Rin Shin - Kon-Kuk University (KOREA)

Input-Output Model Identif ication of Voltage-Dependent Power System Dynamic 565Loads Using Time-Delayed Neural NetworksS. S. Jang - Clarkson University (USA)Said Ahmed-Zaid - Boise State University (USA)C. W. Taylor- Bonneville Power Adm. (USA)Dejan Sobajic - Electric Power Research Inst (USA)

• A Study on Load Flow Calculation Using an Energy Function 571Young-Hyun Moon, Tae-Hoon Roh, Jeong-Do Park, Kyung-Sub Urn- Yonsei University (KOREA)

SESSION 18: Design

' A Study on the Configurat ion of Communicat ion Network for Remote Control of 579KEPCO's Power SystemTae-Won Kim, Tae-Kyun Kim, Heung-Taeg Lee, Jeong-Hoon Shin - Korea Electric PowerResearch Institute (KOREA)

Rotor Angle Estimation for Permanent Magnet Synchronous Machines with Hall 583Effect Position Sensors Using Neural NetworksTodd D. Batzel, Kwang Y. Lee - The Pennsylvania State University (USA)

' A Study on Comparison Between Immune Algorithm and the other Algorithms 588Jang-Sung Chun, Dong-Hyeok Cho, Min-Kyu Kim, Jeong-Pil Lim, Hyun-Kyo Jung - SeoulNational University (KOREA)

> A Functional Link Network Based Neuro-ldentifier for Power System Stabilizer 593DesignBoonserm Changaroon - Electricity Generating Authority of Thailand (THAILAND)S. C. Srivastava - Asian Institute of Technology (THAILAND)

• Improved Genetic Algorithm and its Application to PM Motor 598Dong-Hyeok Cho - Seoul National University (KOREA)Dong-Joon Sim - Steel process Div., RIST (KOREA)Hyun-Kyo Jung - Seoul National University (KOREA)

• Design of a Speed-Sensorless Vector-Controlled Induction Drive with Neural 603Network Based Speed EstimationShyh-Jier Huang - Kaohsiung Polytechnic Institute (TAIWAN)Ching-Lien Huang, Yui-Shin Lin - National Cheng-Kung University (TAIWAN)

SESSION 19 : Distribution System

• Hybrid Reliability Optimization Methods for Electric Power Distribution Systems 611Richard E. Brown - ABB Power T&D Company Inc. (USA)S. S. Venkata - Iowa State University (USA)Richard D. Christie - University of Washington (USA)Heung-Jae Lee - Kwangwoon University (KOREA)

• A Study on a Genetic Algorithm for Optimal Deployment Problem of Fuel Cells in 618Large Distribution SystemsYoshifumi Zoka, Hiroshi Sasaki, Junji Kubokawa - Hiroshima University (JAPAN)

• A Novel Approach for Feeder and Transformer Load Balancing 623Jaw-Shyang Wu - National Kaohsiung Institute of Technology (TAIWAN)

• Fuzzy Logic Based Service Restoration in Distribution Automation Systems 628Seong-ll Lim - Korea Electric Power Research Institute (KOREA)Ki-Wha Kim - Sangji Junior College (KOREA)Pil-Suk Kim, Seung-Jae Lee - Myongji University (KOREA)Bok-Shin Ahn - LG Industrial Systems Co. (KOREA)

• A Knowledge-Based Approach to System Planning for Increases in Load Demand 634by Large CustomersChyou-Jong Lin - Taiwan Power Company (TAIWAN)Chen-Ching Liu - University of Washington (USA)Chun-Heng Chiang, Tsong-Roon Wang, Yung-Tien Chen - Taiwan Power Company(TAIWAN)