2001

Diendorfer G.:
Correlation of Power line failures and lightning location data

5th International Workshop on Physics of Lightning (IWPL), Nagoya, Japan, 2001

Lightning is one of the main causes for power line outages. We have correlated HV line outages of either unknown reason or when lightning was already assumed to be the reason with the archived lightning data from ALDIS for about 25 power lines (400 kV and 220 kV). For about 25% of the outages we found very good correlation with a lightning discharge in a corridor of up to +/- 5000 m. Some of the remaining outages are assumed to be either caused by other severe weather related events (strong wind, moisture on insulators, etc) or by lightning flashes that have not been detected by the LLS.

We have also determined values for the actual ground flash densities for the individual lines and we used the software IEEE-FLASH - which is based on the Electro-Geometric-Model (EGM) - to estimate the number of outages per 100 km and year. For some lines the comparison of the estimated values and the actual observed number of outages shows poor correlation.

PDF File (28 KB)

Diendorfer G.:
Efficiency of lightning protection of power lines - comparison of estimated and observed failures

International Symposium on Winter Lightning (ISWL), Toyama, Japan, 2001

Lightning is one of the main causes for power line outages. We have correlated HV line outages of either unknown reason or when lightning was already assumed to be the reason, with the archived lightning data from ALDIS for about 25 power lines (400 kV and 220 kV). For about 25% of the outages we found good correlation with a located lightning discharge in a corridor of up to +/- 5000 m. Some of the remaining outages are assumed to be either caused by other severe weather related events (strong wind, moisture on insulators, etc) or by lightning flashes that have not been detected by the lightning location system.

Based on the data archive of the lightning location system ALDIS we have determined values of the actual ground flash densities for the individual lines and we applied the IEEE-FLASH software - which is based on the Electro-Geometric-Model (EGM) - to estimate the number of outages per 100 km and year for each line. For some lines the comparison of the estimated outage rate and the actual observed outage rate are very much different.

PDF File (69 KB)

Diendorfer G., J. Groiss, S. Pack:
Österreichische Richtline für die Stromversorgung von Mobilfunk-Antennen auf Hochspannungsmasten

Beitrag zur 4.VDE/ABB Blitzschutztagung, Neu-Ulm, Germany, 2001

PDF File (1,4 MB)

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