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This program estimates the lightning flashover rates of overhead electric power transmission and distribution lines, according to IEEE Stds. 1243 and 1410. New BSD License and IEEE Copyright.

Spreadsheet interface to arrester and critical current evaluations.

Line arrester simulation results from OpenEtran.

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Project Admins:

• Tom McDermott

[Muhammad Humayun]

Hi,
I am trying to find Flashover Rate/100 mi/yr (Backflash+Shielding Failure)) for a 230 kV transmission line (single circuit, one conductor per phase, and no arrestors) by IEEE Flash using MS excel spreadsheet interface.
I am working in "Flash_Arresters.xlsm" and selecting the study parameters in a workbook named "Summary". I have the following question related to setting Ground Flash Density (GFD) for the system.

Question: How can I set Ground Flash Density (GFD) value? It seems that whenever I try to calculate results (by clicking "Summarize"), GFD is reset to unity in the worksheet named "Flash1.9".

Thanks and Regards,
Muhammad Humayun

[Alejandro Escallon]

I'm having trouble with running it, any recomendation for first use?