Electricity Today T&D Magazine

In Canada, lightning flashes occur about 2.34 million times a year; with the highest levels of concentration during the summer months.

While most lightning on earth is ground-to-cloud,  recent research has identified that the majority of lightning events to tall structures, such as wind turbines, occur in the presents of ground-to-cloud leaders – upward lightning.  More importantly, the majority of ground-to-cloud leaders transpire following a sudden change in electric field initiated by either cloud-to-cloud, cloud-to-air or cloud-to-ground discharges.

Since the late 1990’s, the utility grade wind turbine sector has identified lightening events as a significant risk factor.  Today, many standards...

A comprehensive review of IEEE guidelines and documents

BY JIM TOMASESKI, IEEE, NESC Main Committee, PAR Electric

Every day, utility workers are risking their lives in work environments that involve high-risk activities such as working at extreme heights, managing or repairing energized high-voltage power systems, transporting dangerous goods, working on suspended access equipment, or the opposite, cramped underground with little ventilation, and mitigating natural disasters.

Although assuring the safety and health of America’s utility workers is the top priority among industry, it is no easy task. Ensuring worker safety involves setting and enforcing standards; providing outreach and education, general site...