Insulated Conductors Committee

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Spring 2003 - Presentations


Check this page periodically to learn about the Presentations scheduled for the Spring meeting.

Please Note: This is a only a listing of the presentations and
UNLESS NOTED, DOES NOT IMPLY THE ORDER IN WHICH THEY WILL BE PRESENTED.

Having focused on extruded dielectric cables for several years, we are pleased to announce “An Overview of PILC Cables” as the topic for the spring 2003 ICC Educational Program and have a distinguished group of presenters. The following quote from Stan V. Heyer, PECO Energy aptly addresses the amazing longevity of these cables:

“The first transmission line at Philadelphia Electric Company was a 2400 volt line from a remote generation site all of two miles from downtown Philadelphia. In 1899, in what at that time was perceived to be a risky trial, Philadelphia Electric Co. built their first 2400 volt transmission line to prove that generation did not have to be close to the load. We were recently doing some work on a circuit near that old generating site and found that around 10 stretches of the original 1899 cable are still in service. There have been some circuit rearrangements in the area and we also found PILC cable from 1900 and 1904. The engineers who worried about the viability of their design in 1899 would be amazed to know that their cable is still in service!”

William Thue, consultant will introduce the topic with a historical perspective. Joe Zimnoch, consultant will cover PILC Cable Design and Manufacture. Stan V. Heyer, PECO Energy will offer a utility perspective on PILC cable operating experience and practices. PILC diagnostic tests will be covered by Willem Boone MSc, KEMA and Carlos Katz, CTL who will also cover condition assessment. In addition, Vern Buchholz, Powertec Laboratories will summarize some interesting findings of a recently completed EPRI sponsored project on condition assessment of PILC cables. Finally, Brent Runyon, Pirelli Power Cables & Systems will talk about the future of this important cable design. Attendees will receive 4 PD hours. For additional details on the presentations please refer to the abstracts and biographies listed below and we look forward to seeing you at the spring ICC:


Historical Review of PILC Cables, William A. Thue, Consultant.
Abstract: later

PILC Cable Design and Manufacture, Joe Zimnoch, Consultant.
Abstract:

  1. Exactly what is a PILC cable?
  2. Basic cable designs.
  3. Function and properties of each cable component.
  4. Cable manufacturing steps.
  5. Past and current AEIC industry specifications.
  6. Improvements over the last 100 years.
  7. Notable features and characteristics of PILC cables.

Cable Operating Experience & Practices, Stan Heyer, PECO Energy.
Abstract: Review experience with PILC cables, what are pro and cons, review maintenance/repair issues/practices, why are utilities considering/moving to PILC replacement. Regarding the pros and cons of PILC photos of various PILC splices will be shown to illustrate the wide range of taps that can be made with PILC. This is a significant advantage of PILC cable.

Reliability Improvement of PILC Cable Circuits by CBM Programs, Willem Boone MSc, KEMA.
Abstract: PILC is a so called "classical" type of cable, reputable but usually relatively old. Because of high reputation, diagnostic testing of old cable makes sense: old cable is not necessarily bad cable. Usually by replacing only a few accessories or parts of cable the quality of the cable circuit can be restored. If utilities want to improve reliability of PILC cable circuits, Diagnostic Testing Induced Condition Based Maintenance has been proven to be effective.

In this presentation attention will be paid to the Condition Based Maintenance (CBM) - strategy for PILC and in particular the available diagnostic methods to accomplish CBM intentions. The most important method, Partial Discharge Detection (PDD), will be dealt with in more detail.

This presentation will also consider the most essential and probably the most difficult part of PILC PD testing: the conversion of measured information into practical recommendations: "The interpretation".

Finally two case studies will be discussed, showing that the CBM-approach works out successfully in the daily practice of utilities.

Condition Assessment of PILC Cables, Carlos Katz, Cable Technology Laboratories
Abstract: Cable Technology Laboratories (CTL) has developed a series of tests to assess the condition of PILC cable. These tests include power factor versus voltage stress and versus temperature, plus a high voltage time test to failure. Using this approach, it has been feasible to assess the relatively condition of PILC cables. This test is destructive in nature.

Using a similar technique, cables categorized in poor condition by partial discharge diagnostics, have been tested in the laboratory. The results do not confirm the poor condition of the field assessed cables.
Additional evaluations are performed by dissecting PILC cables and studying the mode and pattern of cable insulation degradation and failure.

EPRI Project on Assessment of PILC Cable Condition from Electrical, Chemical and Metallurgical Tests, Vern L. Buchholz, P.Eng., Powertech Labs Inc.
Abstract: An EPRI project on condition assessment of PILC cable was recently completed by Powertech Labs. Sixteen lengths of field-aged PILC cable were collected from utilities across North America. Two of these lengths were removed from an in-service PILC feeder circuit on which diagnostic tests had been performed. Three different categories of diagnostic tests were performed on the field-aged PILC cable samples. These included chemical and dielectric tests on paper tape and on oil samples, electrical diagnostic tests in the lab and on-site on full-sized field aged cable lengths, ac breakdown and water-ingress tests on the same field aged cables, and metallurgical tests for the evaluation of lead sheath aging. A short presentation will describe the objectives and tests methods.

Getting the Lead Out: Options for PILC Replacement, Brent Runyon, Pirelli Power Cables & Systems.
Abstract: The long history of PILC cables may be coming to a close. More and more utilities are seeking a viable alternative to this cable design, due primarily to two reasons:

  1. difficulty in installing and maintaining this type of cable and
  2. pressure from environmental groups.

This presentation will deal with the future of PILC replacement and the pros and cons of current alternatives.


Biographical Sketches - Educational Program Presenters 

William A. Thue, Consultant.

William A. Thue worked for Florida Power & Light Co. from 1946 to 1984 in the engineering and construction of underground cable systems. During these 38 years, he served on numerous national and international committees that developed standards for underground distribution systems such as cables, load break elbows, safety, and testing.

He has been a member of the Insulated Conductors Committee since 1956; has served as Subcommittee Chair, Secretary, Vice Chair, and Chair of the committee as well as Chair of several Working Groups. He received the ICC Distinguished Service Award in 1986. He served on the Cable Engineering Section of AEIC where he was Chair and Chair of the Extruded Dielectric Cable Specifications group. He is a Life Fellow of IEEE.

He has worked as Chair of two subcommittees of the National Electrical Safety Code, ANSI C2 and is editor of the textbook “Electrical Power Cable Engineering.”

Bill is presently working as an expert witness in lawsuits teaches at the University of Wisconsin – Madison, and does other consulting work.

Joseph T. Zimnoch, Consultant.

Joe Zimnoch received a BSEE in 1955 and MSEE in 1958 from Newark College of Engineering, now known as New Jersey Institute of Technology. He was employed by The Okonite Company for 41 years from 1954 to 1995 involved in research, application and installation of various type cables. The majority of his work was on paper and laminated paper insulated cables from 5kV to 500kV and he has been involved with numerous underground cable system installations in this voltage range. Since 1995 he has been an independent industry consultant to a variety of clients including cable companies, utilities, EPRI, consulting engineering firms and legal firms as an expert witness in litigation cases. He was an expert reviewer of the 1992 EPRI "Underground Transmission Systems Reference Book" and Vice Chairman of the just recently published IEEE Standard 1425 "Evaluation of the Remaining Life of Impregnated Paper Insulated Transmission Cable Systems". He is an active voting member of the ICC and a Life Member of both IEEE and the National Association of Corrosion Engineers.

Stan V. Heyer, PECO Energy.

S. V. Heyer is a Senior Engineer in the Distribution Equipment Branch of PECO Energy Co. He is responsible for cable and accessories from 600 volts through 230 kV. He has over 30 years of cable related experience in the utility industry. Stan received a B.S.E.E. from Drexel Institute of Technology in 1969 and an M.S.E.E. from Drexel University in 1973 and is a Registered Professional Engineer in the Commonwealth of Pennsylvania. He has been an active member of the IEEE Insulated Conductors Committee since 1974 and is a past Chairman of the Insulations Subcommittee and the Cable Supply Systems Subcommittee. He is also a member and past Chairman of the AEIC Cable Engineering Section.

Willem Boone MSc, KEMA

Willem Boone obtained his Masters Degree in Electrical Engineering from Delft University of Technology in The Netherlands in 1961 and has almost forty years of experience with KEMA in the field of underground Electrical Power Transmission and Distribution. Mr. Boone is recognized world-wide as an expert in power cables, and he has made a significant contribution to the development of testing methods and related international standards for the electrical cable industry. He was an active member of the International Electrotechnical Committee for about 20 years. He is now the manager of KEMA Diagnostic Services in the USA, offering cable testing and related services to the utility customers. He is a member of CIGRE Study Committee B1 HV cables and chairman of CIGRE WG B1-04 Maintenance. He is an active member of the Insulated Conductors committee of the IEEE as vice chair of WG C19W preparing a new guide for PD field testing of power cables and as vice chair of the Trans National Lunch.

Carlos Katz, Cable Technology Laboratories

Carlos Katz has been active in the field of power transmission and distribution cables for over 40 years. He held research and engineering positions at General Cable Corporation and Phelps Dodge Cable and Wire Company until he became co-founder of Cable Technology Laboratories, Inc., in 1978.

Mr. Katz had major responsibilities, at General Cable and Phelps Dodge, for engineering and research in paper insulated cables and their accessories. He has conducted many analytical and laboratory investigations of degradation and failure of extruded cable insulation and accessories for both distribution and transmission cable systems. He was instrumental in developing methods to extend the service life of extruded distribution cable. Mr. Katz is the author or co-author of more than 35 technical papers and holds 16 USA Patents. He is a Fellow of the IEEE, a voting member of the ICC and a member of CIGRE.

Vern L. Buchholz, P.Eng., Powertech Labs Inc.

After completing his Bachelors degree, Mr. Buchholz worked for 7 years as a research associate at the University of British Columbia, Vancouver, Canada, designing television systems for remote sensing. He joined BC Hydro in 1981 performing electrical design work on overhead and underground transmission systems. He came to Powertech Labs Inc., a research and testing subsidiary of BC Hydro, in 1984 were he is now the Director of the Electrical Technologies Business Unit. His group’s major work covers power cable and large generator and motor testing, and operation of the High Current Lab.

He is a Senior Member of the IEEE. He is a Professional Engineer registered in the Province of British Columbia Canada.

Brent Runyon, Pirelli Power Cables & Systems.

Brent Runyon received his BEE in 1997 and his MSEE in 1998 from the Georgia Institute of Technology, with a specialization in Power Systems. He spent a brief period as a transmission planner for the Southern Company, after which he joined Pirelli Power Cables & Systems as an Applications Engineer. He is also heavily involved in E-Business activities at Pirelli.


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