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WG B2.24 Qualification of HV and UHV Overhead Line Supports under static and dynamic Loads

The current practice in the transmission industry is to perform static load analysis of towers. Most structural loads that transmission towers are subjected to are dynamic based. These dynamic loads include, but not limited to, wind (synoptic, hurricane, and localize high-intensity), earthquakes, avalanches, conductor vibrations, broken conductor and insulators.

Recent earthquake and avalanche events with subsequent damage to critical transmission infrastructure demonstrate the importance of providing advanced analysis guidelines. With the development of advance dynamic numerical modeling software the ability to perform a dynamic analysis of transmission towers is more accessible. International and nation industry standards provide little or no guidelines for dynamic load evaluation using dynamic simulation. Quality engineering information on dynamic loads for tower analysis and design can increase the operational performance and structural reliability of transmission towers.