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The
GoTo Site for Power System Professionals Involved in Surge Protection |
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2010 IEEE T&D
Conference and Exposition Surge Protection
Highlights |
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This is a page
dedicated to the 2010 IEEE T&D Exposition relative to Surge
Protection. Your feedback is greatly
appreciated. Send it to jonathan.woodworth@arresterworks.com |
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A New Version of the IEEE Flash Program Open-sourced Software for
Calculating the Lightning Outage Rate of a Line. T. E. McDermott, Senior Member,
IEEE FOR many years, the
IEEE operated separate working groups to develop guides for overhead
transmission line and distribution line lightning protection. The
transmission line guide came with a simple program to estimate lighting
flashover rates called “IEEE Flash”. The latest version of Flash is freely
available, but it does not account for newer developments, most importantly
line arresters. Since the two working groups have been consolidated, a new
effort is underway to develop Flash 2.0 that covers both transmission and
distribution lines. The project is open
source under the BSD-new license, and maintained at SourceForge. http://www.sourceforge.net/projects/ieeeflash/
Members of the
development team include: - T. E. McDermott,
MelTran - W. A. Chisholm,
Kinectrics / UQ-Chicoutimi - G. Leone, Stanley
Consultants - D. Maragal, NYPA - J. D. Schoene,
EnerNex - T. A. Short, EPRI The source and
executable files are downloadable by anyone, subject to the license terms.
Others may join the development team by sending a request through the
SourceForge email system.
IEEE FLASH 2.0 FEATURES It is a design goal of Flash 2.0 that EMTP simulation
shall not be required. However, rudimentary integration with EMTP is an
option. The program is to provide quick estimates of line and arrester
performance, commensurate with uncertainties in the data and models, and
suitable for use by utility engineers. With implementation Excel 2007 it is
expected that a newer generation of students and researchers can readily
extend the program. A summary list of
IEEE Flash 2.0 follows: 1. Consolidated
treatment of transmission and distribution lines. 2. Shielding
analysis using an electrogeometric model, or alternative module. 3. Insulation
strength described by a volt-time curve, or alternative module, with CFO
added by wood, fiberglass, and similar secondary or tertiary insulating
materials. 4. Impact of tower
surge impedance, span length, corona, and conductor characteristics. 5. Estimates of
backflash rates and the performance of tower or pole grounding methods. 6. Estimates of
induced voltages and flashovers from nearby strokes, using a modified Rusck
formula. 7. Estimates of line
arrester impact on flashover rates. 8. Estimates of line
arrester failure rates. 9. Generate an EMTP
input file, for further analysis. Tom says that Flash
2.0 in its Excel version will be available by early July 2010. |
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Siemens is now offering the Externally Gapped Line Arrester (EGLA) An arrester that has been available from Sediver,
Toshiba, and NGK for years is now available also by Siemens. A 132kV rated double SVU (Series Varistor
Unit) arrester was on display. US based Product Manager Ulrich Bauch explained that they
do not have literature at the moment because most designs are specials and
each installation requires different configurations however they are ready to
work with any inquires.
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Hubbell Displays a New High BIL Insulating Hanger This new insulating
hanger is designed for installation in environments where there is extreme
contamination. Any user that has
experienced distribution arrester insulating hanger tracking could benefit
from this design. The light gray part
of the insulating hanger is silicone rubber material and the dark gray part
is glass filled polyester. This insulating
hanger design has been in use quite effectively in the Florida environment
for years. With this insulating
hanger installed, the necessity to replace an arrester within a few months
after its disconnector has operated is avoided. Contact Arrester Product Manager Steve Brewer for more information.
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Hubbell Displays the Improved Protecta-lite The transmission line arrester line has been simplified
with fewer parts and less risk of parts wearing out. Several steel plated
components were replaced with one copper strap. The strap makes installation easier and
reduces the wear points. Vibration and
wear are more important on transmission line arresters due to the fact that
they are more exposed to wind and vibration.
Contact Arrester Product Manager Steve Brewer for more information. |
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Tyco Displays Their Retro-fitable Wildlife Protective Device (WPD) for
Arresters As the demand for higher system reliability increases,
the need for better wildlife protectors increases. Tyco is answering the demand by introducing
a WPD that will not come off, and will reduce the probability of an animal
induced outage. And it can be easily
installed on existing arresters without an outage.
Contact Arrester Product Manager Tim Smith for more information. |
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ABB Displays their EXCOUNT II Arrester Condition Monitoring System The
EXCOUNT II conditioning monitor is their top-of-the line product combining modern
looks with the most advanced watts-leakage monitoring system on the
market. The EXCOUNT-II enables
users to keep track of overvoltages in the network as well as providing
state-of-the art on-line condition monitoring of arresters.
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ELPRO Displays Disks and Arresters Elpro
International had a complete display of distribution and station products.
They are a supplier of ZnO Disks and Arresters.
Contact
Anil Poddar
or Raghubir Mukherjee for more information |
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Richards Manufacturing Displayed a New 35kV Elbow Arrester Richards
Manufacturing has introduced an Elbow
arrester to the market. It is
designed for a 600 amp interface.
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ArresterWorks and Arrester
Museum was at Booth 657
This
is ArresterWorks’ first trade show with a booth. We have assembled a small part of our
Arrester Museum for those curious
about Arrester History
Send Comments to jonathan.woodworth@arresterworks.com |
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DTR Corporation Displays the Only Distribution EGLA at the Show DTR Corporation had a full line of distribution arresters
on display as well as the only distribution Externally Gapped Line Arrester
at the Expo. The EGLA is located at
the back left of the photo and is mounted with a ring around the mating
insulator.
Contact SW
Song the International Sales and
Marketing Manager at DTR for more
details |
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