Attendees: Bradley, Chisholm, Durbak Field, Gale, Grzybowski, Hensel, Ishii, Kappenman, Maltempi, Marz, McDaniel, McDermott, Patel, Posey, Rozek, Schehade, Short, Weitzel, Wilson, Zhao
The meeting began with two presentations by Ishii and Tanabe on line arrester evaluation and FDTD ground simulation, respectively. These will be repeated at a paper session Wednesday afternoon.
There will be a joint panel session with the distribution lightning WG at the Atlanta T&D show; anyone interested in presenting should contact McDermott or Short ASAP. Grzybowski has opportunities for Ph.D. students in high voltage and lightning protection at Mississippi State, also a lightning protection course offered November 12-16.
The 1243 guide must be reaffirmed or revised by the end of 2002. The changes will include a new version and description of FLASH, and new GFD maps from the scrubbed NLDN data and the NASA Optical Transient Detector project. Grzybowski stressed the OTD map must be presented in a usable form, which will probably be done electronically. We need to obtain the existing standard in electronic form, and investigate the IEEE copyright and applicable license agreements for posting FLASH with source.
In addition, Ishii will provide a small section of text on positive strokes and Chisholm will provide updated references on the charge transfer system. Grzybowski suggested adding strike distance and some other terms to the definitions. McDermott will ask Reigh Walling if line arrester applications will be covered in the next round of C62 standards; if not, we may expand the existing ¾-page coverage in 1243. McDermott will assemble all these changes into a draft for review at the Summer Power Meeting.
Our next update to analytical models will be in the form of a WG paper to be finished in 2002. The main areas of emphasis will be an electrogeometric model replacement, approximate methods for line surge arrester applications, guidelines for the use of lightning detection network data, and non-standard wave impacts on insulation strength and tower surge response. McDermott will ask Anderson to provide a review of the status and recommendations for the EGM replacement. The non-standard wave impacts material will come from Chowdhuri’s task force, expected to finish a report within the next several months. McDermott will work on arrester calculation methods, with assistance from Field, Short, and Zhao. The material on LDN data applications ought to come from Global Atmospherics representatives on the WG, with contributions from utility members (Rozek offered to provide examples).
McDermott described the conversion of FLASH to C with an optional front end in Microsoft Excel. Chisholm will test compilation under Linux. This will be posted on the Web site in February after a few more changes. Utilities might be able to submit test cases over the Web in the form of Excel spreadsheet files.
Reigh Walling says there will be a new (merged transmission and distribution) section on line arresters. They are late in the process, but he will send a draft to McDermott for review sometime before the next SPD meeting, around May 2001.
The IAS PAR 1576 on charge transfer systems (formerly "lightning elimination") was discussed at the L&I Subcommittee meeting on Wednesday morning. Interested persons should consult the L&I minutes available from Chisholm.