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Open Research Online Oro.Open.Ac.Uk Open Research Online The Open University’s repository of research publications and other research outputs Application of the conditioned network concept in high frequency power line carrier Thesis How to cite: Nicholson, Peter J. (2002). Application of the conditioned network concept in high frequency power line carrier. PhD thesis The Open University. For guidance on citations see FAQs. c 2002 Peter J. Nicholson Version: Version of Record Link(s) to article on publisher’s website: http://dx.doi.org/doi:10.21954/ou.ro.0000fd3b Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online’s data policy on reuse of materials please consult the policies page. oro.open.ac.uk Application of the Conditioned Network concept in High Freqnency Power Line Carrier Peter J. Nicholson B.Eng. (Hons.) A thesis submitted to the Open University Faculty of Technology Discipline of Electronics For the degree of Doctor of Philosophy , ■ ^ r ; - bRTe "Dp 5 ' |Q 7^00 Z. bA-re OF AWARb. 17 MAX zooz. ProQuest Number: 27532770 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 27532770 Published by ProQuest LLO (2019). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLO. ProQuest LLO. 789 East Eisenhower Parkway P.Q. Box 1346 Ann Arbor, Ml 48106- 1346 Acknowledgements The author wishes to thank NORWEB for their sponsorship of this research. Special thanks are due to the author’s academic supervisor, Dr. John E. Newbury, B.Sc., Ph.D., F.B.I.P.S., M.Inst.P., F.R.A.S. and his industrial supervisor. Dr. Paul A. Brown, B.A. (Hons), Ph.D., C.Eng., M.I.E.E., M.I.E.E.E., M.T.M.A. for their guidance, support and friendship over the years. Special thanks are also due to Dr. John Dickinson, B.Eng. (Hons), Ph.D. for his much appreciated friendship. Finally the author would like to thank his family for their encouragement and understanding. Memorandum All work and ideas recorded in this dissertation are original unless otherwise acknowledged in the text by reference. The work has not been submitted in support of an application for another degree in this university, nor for any degree or diploma at any other institution. 11 Table of Contents ACKNOWLEDGEMENTS..............................................................................................................................I MEMORANDUM........................................................................................................................................... II TABLE OF CONTENTS...............................................................................................................................Ill ABSTRACT.................................................................................................................................................... VI GLOSSARY OF TERMS............................................................................................................................ VII CHAPTER 1: HISTORY OF THE ELECTRICITY SUPPLY INDUSTRY AND PLC...........................1 1.1 Introduction ......................................................................................................................................................1 1.2 The E lectricity D istribution N etw ork ...................................................................................................5 1.2.1 History and Development ........................................................................................................................ 5 1.2.2 The Electricity Council ............................................ 7 1.2.3 The Central Electricity Generating Board .................................................... 7 1.2.4 Area Boards............................................................................................................................................... 8 1.2.5 The P ool ................................................................................................................................................... 10 1.2.6 The National Grid....................................................................................................................................10 1.2.7 Regional Electricity Companies ...........................................................................................................11 1.2.8 Distribution ..............................................................................................................................................11 1.2.9 Supply........................................................................................................................................................12 1.3 M eterin g ........................................................................................................................................................... 13 1.3.1 The 1 MW Market....................................................................................................................................14 1.3.2 The 100 kW Market................................................................................................................................ 15 1.3.3 Full Competition......................................................................................................................................16 1.4 The H istory of P ower L ine Communications i..............................................................................18 CHAPTER 2: PLC CASE STUDIES............................................................................................................ 28 2.1 Introduction ................................................................................................................................................... 28 2.2 E arly Signalling Techniques ..................................................................................................... 29 2.2.1 Ripple Control ................................................................ 29 2.2.1.1 Audio Frequency Generators ................................................................................................................ 29 2.2.1.2 Signal Coding ........................................................................................................................................29 2.2.1.3 Impulse Interval Coding ........................................................................................................................30 2.2.1.4 1970s Ripple Control Transmission Equipment ....................................................................................31 2.2.1.5 Central Programming Unit .....................................................................................................................32 2.2.1.6 Transmitter Remote Control Unit..............................................................................................................32 2.2.1.7 Frequency Converter ................................................................... 32 2.2.1.8 Coupling Filters .....................................................................................................................................32 2.2.1.9 Receivers...............................................................................................................................................33 2.2.1.10 Input Circuit ...........................................................................................................................33 2.2.1.11 Decoder .........................................................................................................................................33 2.2.2 Peak Depression ...................................................................................................................................... 34 2.2.2.1 Transmitter .........................................................................................................................................35 1.2.2.2 Receiver................................................................................................................................................. 36 2.2.2.3 Coding ................................................................................................................................................... 36 2.2.3 Cyclocontrol ............................................................................................................................................37 2.2.3.1 Coding ................................................................................................................................................... 39 2.3 A n E arly P ower Line Telephone Sy stem ............................................................................................... 41 2.3.1 The Distribution System .......................................................................................................................... 42 2.3.2 The Telephone System ............................................................................................................................ 45 2.3.3 Common Carrier Terminal................................................. 46
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