5,6,7 September, 1995

Conference Proceedings

Volume 2

Hosted by

School ofEngineering

University of Greenwich

London

335 Control of Voltage Stability in a System with Long Distance Transmission

Line

T Tran-Quoc - Institut National Polytechnique de Grenoble, France

L Pierrat, N Nguyen-Khac - Electricite de France, France

K Nguyen-Boi, P Phan-Ke - Ho Chi Minh City University of Tech, Vietnam

Q Tran-Trong - Power Company No 2, Vietnam

339 C++ Object Oriented Power Systems Software

SG Tan, JJ Rico-Melgoza, E Acha, CR Fuerte-Esquivel - University of Glasgow,UK

343 The Use of DINIS in the Glasgow University Power Systems LaboratoryE Acha - University of Glasgow, UK

K Parton - Ken Parton & Associates, UK

347 Design of Magnetic Components using a Graphical Interface: Inclusive of

High Frequency Effects

JG Breslin, WG Hurley, University College, Galway, Ireland

351 Local Pre-Screening Applfed to Cyclic Security AnalysisH Le Kim, N Hadjsaid, J-C Sabonnadiere - Institut National Polytechnique De

Grenoble, France

355 The Design and Control of Portable Pulse-Width-Modulated (PWM) DC-AC

Inverter

B Baha - University of Brighton, UK

359 A Sensitivity Analysis of Capital and Operating Costs of Mini-Hydro

Generating Plant

AR Wallace, Ms R E Wilkinson - University of Edinburgh

363 Applying Distributed Processing Methodology ot Harmonic Elimination in

AC/AC Chopper Circuits

HJ Wolfe, GE South, FJ Swift - The Manchester Metropolitan University, UK

Session 10: Drives & Machines III

Chairman: Mr LMC Mhango, Airscrew Howden Ltd

Wednesday 6 September at 9.00 am, Arts Centre

367 Finite Element Post Processing for Permanent Magnet Motors

G Thomas, Y Anagreh - University College Swansea, UK

371 Measurement of Iron Loss in PWM Inverter Fed Induction Machines

M Sokola, V Vuckovic, E Levi - Liverpool John Moore's University, UK

375 Linear Drives - A Market SurveyR Hanitsch - Berlin University of Technology, Germany

379 A Real Time Controlled Brushless DC Motor with Trapezoidal Excitation

MS Khanniche, M Bah - University of Wales, UK

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383 Measurement of Iron Loss in Single Phase Induction Motors

M McCormick, WF Low, A Bousbaine - De Montfort University, UK

387 Modelling of a Brushless Single Phase Self Excited Alternator

P Dean, M Kansara, JMK Pratt - Nottingham Trent University, UK

391 Modelling and Analysis of Linear Induction Drives

G Gentile, S Meo - Universita "Federico II" di Napoli, ItalyA Ometto - Universita di L'Aquila, ItalyM Scarano - Universita di Cassino, Italy

395 Computer Based Simulation of a Vector Controlled AC Drive System for

Performance Analysis and Condition MonitoringM Herbert, AJ Curley, R Perryman - University of Greenwich, UK

Session 11: Power System Protection I

Chairman: Dr P Crossley, UM3ST Manchester

Wednesday 6 September at 9.00 am, Lecture Theatrer

399 The Design and Application of an Optimal Reclosure Device

BH Zhang, YZ Ge - Xian Jiaotong University, China

ZQ Bo, RK Aggarwal, AT Johns - University of Bath, UK

403 Impacts of Internal Arcing Faults in Low-Voltage Switchgear Assemblies and

Power SystemsH Schau, D Stade - Technische Universitat Ilmenau, Germany

407 Dynamic Modelling of Protection Signalling. Part n: Integration of the

Transducers

M Tumay, MS Buamud - Strathclyde University, UK

411 Comparison of Distance Protection Algorithms for EHV Power Cable

PJ Moore, RK Aggarwal, ZQ Bo, AT Johns - University of Bath, UK

415 An Investigation of Characteristics for Tripping Protection Detecting Out of

Step Conditions. An Eskom Case StudyJ Van Eyssen - ESKOM, South Africa

A Petroianu - University of Cape Town, South Africa

419 An Enhanced Stator Widening Protection for Small and Medium Sized

Generation Based on the Fast Walsh-Hadamard Functions

MA Redfern, D Hunn - University of Bath,'UKDB Hewings - University College, Swansea

423 Integrating Model Based Diagnosis into a Decision Support System for

Protection EngineersS Bell, SDJ McArthur, JR McDonald, GM Burt - University of Strathclyde, UKR Mather, SM Burt - Scottish Power, Glasgow

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427 Neural Network Approach to Staggered Tripping of Circuit Breakers in

Adaptive Single Pole AutoreclosingHY Li, RK Aggarwal, AT Johns, RW Dunn - University of Bath, UKD Fitton - Reyrolle Protection

Session 12: Power System Operation, Economics and Reliability

Chairman: Dr F McNamara, ESB International, Dublin

Wednesday 6 September at 9.00 am, Gym 1

435 Load Forecasting for the Power System of Crete - A Comparative AnalysisT Papazoglou - Technological Education Institute, Crete

B Bitzer, F Rosser - Universitat-GH Paderborn

439 Constrained Economic Dispatch Scheduling in a Real Public Electricity SupplySystem - A Genetic ApproachF Li, R Morgan, D Williams - Liverpool John Moores UniversityYH Song - University of Bath

443 Evolutionary Development of an Intelligent System for Power Network

Operator Assistance

IM Elders, GM Burt, JR McDonald - University of Strathclyde, UK

J Spiller, D Brooks, R Samwell - South Western Electricity PLC

447 Dynamic Stability Screening of Electric Power Systems Using Artificial Neural

Networks

AR Edwards, KW Chan, RW Dunn, AR Daniels - University of Bath, UK

451 Reactive Power Optimisation and Voltage Regulation for Large Power SystemsJY Liu, YH Song, AT Johns - University of Bath, UK

XY Li, GD Wang - Sichuan Union University, China

455 Standards Applicable to Earthing Design - Which Ones to Follow?

A Beddoes - EA Technology, UKAM Davies, H Griffiths - University of Wales College of Cardiff, UK

459 The Use of Soft Energisation in Power System Restoration

MC Hayden, JG Kennedy - ESB National Grid, Dublin

Session 13: Power Generation n

Chairman: Dr MA Redfern, University of Bath

Wednesday 6 September at 11.30 am, Arts Centre

463 Application of Intelligent Control Strategies to Generating Unit Load Control

DJ Geddes, BW Hogg, E Swidenbank - Queen's University of Belfast, N. Ireland

467 Safety in the Former Soviet Nuclear Power IndustryHW Whittington, DH Wilson - University of Edinburgh, UK

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473 Multivariate Polynomial H AVR Design for Synchronous GeneratorsI Eker - University of Strathclyde

477 Transient Model of a Self-Controlled Brushless Synchronous GeneratorL Hindkaer, H Mentz, TI Mortenson, K Ries, E Ritchie, CYB Thor - AalborgUniversity, Denmark

482 Harmonic Reduction of Saturable Reactor Controlled Induction GeneratorsSMI Lidgey, PJ Moore, KJ Passey - University of Bath

486 Characteristics of Small Synchronous MachinesJP Martin, CE Tindall, DJ Morrow - Queen's University of Belfast, N. IrelandPAJ Calvert - FG Wilson (Engineering) Ltd, N. Ireland

Session 14: High Voltage Systems and Measuring Techniques

Chairman: Mr M McMahon, ESB International Dublin

Wednesdday 6 September at 11.30 am, Lecture Theatre

490 A Versatile Multiple Stroke Lightning Impulse GeneratorWH Siew, MM Yaacob, ID Chalmers - University of Strathclyde, UK

494 Emergency Bypass of a G3 MVA Power Transformer Using TemporaryWoodpole Structures

J Kennedy, P O'Brien, E O'Connor, J Whelan, M Hayden - ESB Engineering Ltd,Ireland

497 Monitoring of Surge Arresters

C Spellman, A Haddad, DM German, RT Waters - University of Wales College of

Cardiff, UK

501 Simulation Study of a new 240 MVA Fast Response Tapchanger SchemeR Shuttleworth, X Tian - University of Manchester, UKA Power, YK Tong - National Frid

505 The Application of Factory Partial Discharge Measurement to Extruded PowerCables and Accessories

R Donaghy - ESB International, Dublin

509 A New Measurement Technique for Power Transformer Faults

ZQ Bo, RK Aggarwal, AT Johns - University of Bath, UK

Session 15: Power Electronic Devices and Applications I

Chairman: Commander NA Haines, Royal Naval Engineering CollegeWednesday 6 Setpember at 11.30 am, Gym 1

513 Resonant HF Link Single-Transformer UPS System with SPWMCycloconverterTH Abdelhamid, AL Moharnadein, MS Abo-Elelaa - Alexandria University, EgyptMK Darwish, P Mehta - Brunei University, UK

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517 A Variable Speed Permanent Magnet, Wind-Turbine Generator and itsControl

Z Chen, E Spooner - University of Durham, UK

431 Experimental Study of a UFC Laboratory Model Employing GTO ThyristorsGA Putrus University of Northumbria at Newcastle, UKCB Cooper - UMIST, UK

521 Simulation of Power Electronics Using the EMTP. Part II: Electrical Drives,A SurveyJA Martinez-Valasco - Universitat Politecnia de Catalunya, SpainGA Capolino - Universite de Picardie Jules Verne, France

525 Real-Time Control of Direct AC-AC Matrix Converters Using a DSP-Based

Space Vector Modulator

L Zhang, C Watthansarn, F Hardan - University of Bradford, UK

529 Drive Circuit for a Power GTO with an Over Current Protection

MH Taha, T Green - Imperial College, UK

Poster Session C:

Chairman: Mrs GF Whapshott, University of Greenwich

Wednesday 6 September at 9.00 am, Gym 2

533 The Potential for Electrotechnologies in the Ceramics IndustryS Jay, TN Oliver - Aston University, UK

537 Electromagnetic Interference in One-Rail Return AC Railway Systems with

Booster Transformers

NK Gupta - Napier University, UKJP Bickford - UMST, UK

541 The Effects of Stochastic Domestic Electrical Loads on the Thermal Sizing of

Aerial Bundled Conductors

R Herman, DR Theron - University of Stellenbosch, S. Africa

545 A Novel Low-Head Hydro Scheme Using an Induction Generator

AA Williams, PG Holmes - Nottingham Trent University, UK

550 Parallel Factorisation and Solution of Network EquationsD Grey, J Bialek - University of Sunderland, UK

554 Calculations of Magnetic Fields of the Bus Bars

T Keikko, L Korpinen, J Partanen - Tampere University of Technology, Finland

558 Parameter Determination and Performance Control of an Alternator by the

Choice of Saturation Level in the Exciting Transformer

N Elsonbaty - University of Zagazig, EgyptPG Holmes - Nottingham Trent University

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562 Active and Reactive Load Demands in Unbalanced Industrial Energy SystemP Caramia, P Verde - Dip.to di Ingegneria Industriale, Italy

567 Integration of Wind Turbines into L-V Networks

TS Davies, H Nouri - UWE Bristol, UK

R Mayer - Sciotech Yateley, UK

571 Study of Wind Energy Conversion SystemsTS Davies, CM Jefferson, H Nouri - UWE Bristol, UK

575 Distribution Fault Diagnostic Using Petri Net TheoryKL Lo, HS Ng - University of Strathclyde, UKJ Trecat - Faculte Polytechnique de Mons, Belgium

579 Major Causes and Mitigation of Voltage Dip in the Electricity Utility in

MalaysiaH Shaibon, AA Mohd Zin - Universiti Teknologi MalaysiaB Sawir - Tenaga National Berhad, MalaysiaKL Lo - University of Strathclyde, UK

583 Numerical Simulation of Photovotlaic Generators with Shaded Cells

R Hanitsch, V Quaschning - Berlin University of Technology, Germany

587 Long Term Performance Modelling of a Combined Energy Generation SystemD Child, IR Smith - Loughborough University of Technology, UK

591 Hardware and Software Simulations of Hybrid Generation SystemsC Cavallaro, A Raciti, S Musumeci - Universita di Catania, ItalyU Nocera, A Leotta - Research Institute for Renewable Energy & Energy Saving

595 Analysis of Hybrid Generation System Configurations Utilising RenewableSources

A Raciti, F Bonanno, A Testa - Universita di Catania, ItalyU Nocera, A Leotta - Research Institute for Renewable Energy & Energy Saving,

599 A Unified Model of the Electrical Power Network

KCP Wong, J Tindle, HM Ryan - University of Sunderland, UK

603 Modelling of the Conditions of the Transport System Network with the

Inductive Power Transmission at High FrequencyG Pivnyak, G Tchitaladze, Y Zrazhevsky - State Mining University of Ukraine

605 A Versatile Input Converter for Battery Charging in Renewable Energy Power

SystemsM Willows, P Lefiey - Leicester University, UK

609 Renewable Energy Generation Systems Embedded in Rural Grid SystemsAR Wallace, S Stapleton - University of Edinburgh, UK

613 Experimental Model for Testing the Distribution System On-Line ManagementR Grasso, F Lo Faro, A Pitrone, N Pitrone- University of Catania, Italy

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617 Optimal Performance of Synchronous Generator with Boost Rectifier forVariable Speed Wind Turbine

AWK Chung, JAM Bleijs - University of Leicester, UK

621 Fuzzy Logic Control of Combined Heat and Power SystemsT Lunn, R Perryman - University of Greenwich, UK

Session 16: Drives & Machines IV

Chairman: Dr R Perryman, University of Greenwich

Thursday 7 September at 9.00 am, Arts Centre

625 A Digitally Controlled Real-time Rotor Resistance Speed Controller for a 3-

phase Slip Ring Induction Motor

P Kamoutisis - Greek National ArmyC B Rajanathan - University of Abertay, UK

629 SCR-Fed Asynchronous Motor Drives Regeneration Phenomenon

N Tcheir, DM Grant, FP Flynn - University of Strathclyde, UK

633 Some Preliminary Considerations about the Use of Luenberger's Observer in

Fully Digitalized Control System of LIM

F Abbruzzesse, G Celentano, E Pagano, G Gentile - University of Naples, Italy

637 Position Controlled Linear Motor Drive for Conveyor Systems

T Adam, F Toth, J Nagy - University of Miskolc

641 Improvements in Soft Start Controllers

WC Beattie, KP Lai - Queen's University of Belfast, N. Ireland

645 An Overview of Impact of NdFeB Magnets on Brushless dc Machines for

Future Aerospace Low Power Drives

LMC Mhango - Airscrew Howden Ltd

R Perryman - University of Greenwich

650 Simple Thoughts on Why ac Generator (Alternator) Parameters are Different

When Obtained From Different Tests

L Haydock - Newage International, UK

654 A Neural Network Based Fault Diagnosis Architecture for a Brushless Drive

Network

J Parker, R Perryman - University of Greenwich, UK

Session 17: Power System Protection U

Chairman: Professor A Bowden, Staffordshire Univeristy

Thursday 7 September at 9.00 am, Lecture Theatre

658 Protection Auditing of Mature Electrical Systems at Nuclear Power Stations.

NJ Griffiths, KA Johnson, D Balasingam - Nuclear Electric, UK

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660 Secure Data Communications Over Distribution Feeder Circuits for Power

System Protection and Control

DP McGuinness - Westinghouse Signals Ltd, UK

MA Redfern, RF Ormondroyd - University of Bath, UK

664 A Graphical Information Display System for High Level Power System

MonitoringR Patel, L Kiernan - Reading University, UK

S Ironmonger, M Bradley, B Vaughan - National Grid Company, UK

667 Artificial Intelligence Techniques Applied to Adaptive Distance Protection

SP Websper, RW Dunn, RK Aggarwal, AT Johns - University of Bath, UK

671 Dynamic Modelling of Protection Signalling. Part I - Digital Test Bed

M Tumay, MS Buamud - University of Strathclyde, UK

675 The Application of Modern Multi-Function Microprocessor Relays to the

Protection of Distribution Plant

R Dickson, B Fletcher - London Electricity, UKMA Redfern - University of Bath, UK

679 Windows Based Power System Simulator for the Testing of Protection Relaysand Schemes

R Brown, P Crossley - UMIST, UK

P Gale - Hathaway Instruments, UK

682 Non-Unit Protection of Distribution Feeders

RK Aggarwal, ZQ Bo, AT Johns, PJ Moore - University of Bath, UK

Session 18: Power Electronic Devices and Applications H

Chairman: Dr WG Hurley, University College, GalwayThursday 7 September at 9.00 am, Gym 1

686 Digital Signal Processor Control Four Quadrant AD/DC Converters

W Hosny, A Chanerley, P Chyla, J Dubovsky, University of East London, UK

690 Condition Monitoring of a Static Power Inverter using Visual Basic Software

RA Lobley, GJ Evans, NA Haines - Royal Naval Engineering College, Manadon

694 Control of a Non-Linear Loads Driven by a DC-AC Converter

A Kern, B Yu - University of Siegen, Germany

698 The Evaluation of Modern Single-Phase Boost Converter TopologiesM Kamsara, A Szabo, ES Ward - Nottingham Trent University, UK

702 Optimized PWM Inverter Control Using Artificial Neural Networks

D Daniolos, MK Darwish, P Mehta - Brunei University, UK

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705 AC Chopper with Near Unity Power Factor

MS Khanniche, FL Batshone - University of Wales, Swansea

709 Switched-Mode Power Supply Using Ferrite-Cored Transformer

J Richardson, GJJ Llewellyn-Rees - Brunei University, UK

713 Speed of Response of a Single Phase Advanced Static VAr CompensatorJB Ekanayake, N Jenkins - UMIST, UK

Session 19: Power Electronic Devices and Applications in

Chairman: Dr P Lefley, University of Leicester

Thursday 7 September at 11.30 am, Arts Centre

717 Steady State Performance of a 3-Level Advanced Static Var CompensatorD Scheidecker, S Tennakoon - Staffordshire University, UK

721 Single Phase Tap-Changer Using GTOs/ThyristorsMH Taha, T Green - Imperial College, UK

r

725 The Development and Design of a Universal Digital Control System for

Cycloconverter Drives Using Electronic Design Automation (EDA) TechniquesMN Cirstea, EB Patterson, D Morley - The Nottingham Trent University, UK

729 Magnetostriction and Vibration in Steel Heated by Induction

RT Baker, TN Oliver - Aston University, UK

733 Thyristor Switches for Mine Locomotives

AE Ivanov - State Mining University of Ukraine

737 A New Control Method for Quasi-Resonant Converters (QRCs)B Baha - University of Brighton, UK

Session 20: Power System Harmonics II

Chairman: Dr A Refsum, Queen's University, Belfast

Thursday 7 September at 11.30 am, Lecture Theatre

741 Harmonic Control Using Switched Filters in Rectifier Circuits

SR Matthews, WC Beattie - Queen's University of Belfast, N. Ireland

865 Diagnosis of Power Quality Problems Using Fault Tree Induction AlgorithmP Nolan - University College Galway, Ireland

745 A Multiprocessor-Based Closed Loop Voltage Control and Harmonic

Elimination for PWM Inverters

MS Khanniche, SK Abed - University of Wales, UK

749 Open and Closed Loop Control Techniques for Distortion Compensation by

Means of Active Filters

K Schipman, RE Morrison, Staffordshire University, UK

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753 Rectifier Circuit Analysis with Power Factor Connection

LG Mannion, WG Hurley - University College Galway, UK

757 Exact Supply Current Harmonic Analysis and Control of Forced Commutated

AC/AC ChoppersFJ Swift, PA Sadler - Manchester Metropolitan University, UK

CDM Oates - GEC Alsthom

Session 21: Power Delivery and Utilization UI

Chairman: Professor Dr TM Papagozlou, Technological Education Institute, Crete

Thursday 7 September at 11,30 am, Gym 1

761 Trading Energy in the Newly Privatised Electricity Supply Industry - An

Overview

AP Birch - Scottish Hydro-Electric pic, UKCS Ozveren - University of Abertay, UK

765 Transient Stability Enhancement by Optimal Control of HVDC Power Flow

TJ Hammons, WS Toh - University of Glasgow, UK

PA Kacejko, M Wancerz - Technical University of Lubin, Poland

769 A Simple Method for Stochastic Assessment of Voltage Sags

MHJ Bollen - UMIST, UK

773 An Accurate Fault Location Technique for Transmission Lines Using an

Artificial Neural Network

RK Aggarwal, M Joorabian - University of Bath, UK

777 The Emergence of Custom Power Technology in Distribution SystemsMM Osborne, RH Kitchin, HM Ryan - University of Sunderland, UK

781 Review of Maintenance Policy for Distribution Overhead Networks

U Lawler - ESB, Dublin

Poster Session D:

Chairman: Dr RC Seals, University of Greenwich

Thursday 7 September at 9.00 am, Gym 2

785 Measurement of Synchronous Machine Parameters; A Practical ExperienceS Salman, KS Smith - University of Aberdeen, UK

ID Stewart - BP Exploration, UK

789 Fast Prediction of Out of Step Condition by Artificial Neural Networks for

Power System Transient Stability Assessment

AY Abdelaziz - Ain Shams University, EgyptMR Irving - Brunei University, UKAM El-Arabaty, MM Mansour - Ain Shams University, Egypt

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793 An On-Line Decoupled Algorithm for State Estimation and Bad Data

Processing Using Hypothesis Tests

FPM Barbosa, IM Ferreira - Universidade do Porto,

797 Design, Analysis and Performance of Parallel Gause-Seidel Algorithm forPower Flow AnalysisEV Skibenko, JR McDonald - University of Strathclyde, UK

801 Design and Testing of Automatic Exploding Foil Changeover SwitchS Miran, VV Vadher, IR Smith, HR Stewardson - Loughborough University of

Technology, UK

805 Power System Simulation for Operational Training in Medium VoltageSystemsN Arnold - Rapas, Creieich

D Metz - Fachhochschule Darmstadt

J Schlabbach - Fachhochschule Bielefeld, Germany

809 Prediction and Performances of a Synchronous Generator Through a Delta-

Star Transformer K

KL Lo, H El-Khartroushi, R Alammari - University of Strathclyde, UK

813 Mathematical Representation of Ferroresonance in Single and Three Phase

SystemsM Tumay, MS Buamud, RRS Simpson - University of Strathclyde, UK

817 Synchronous Machines Simulation Data Treatment Through the Method of

Mixed Statistical Estimates

VA Shikhin - Frederick Institute of Technology, CyprusGP Pavluk - Moscow Power Engineering Institute

821 Dynamic Model of Hybrid Generation SystemsA Raciti, F Bonanno, A Consoli - Universita di Catania, ItalyU Nocera, A Leotta - Research Institute for Renewable Energy & Energy Saving

825 Effect of Desert Conditions on the Surface of Polymer Insulators

O El-Gendy, BA Arafa, A Sedeek, I Yassein, M Hamed - Egyptian Electricity

Authority, EgyptA Nosseir - Ain Shams University, Egypt

828 Proposed Ireland/South Wales Power Link: Steam Turbine-Generator Shaft

Torques Due to Steady Harmonic Ripple Currents Superimposed on the

HVDC Current in Asynchronous Links

TJ Hammons, TC Chua, KH Chew - University of Glasgow, UK

B Hinschberger - ENSIEG, France

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