Why is it important for System Operators to address cold weather interruptions?

Addressing cold weather interruptions is crucial for System Operators because breakers may not operate effectively if they remain de-energized for too long, specifically beyond a 30-minute window, unless supplemental measures, such as heaters, are employed. In cold temperatures, particularly in extreme conditions, the mechanical and electrical components of the breakers can experience issues that prevent them from functioning correctly. Heaters help maintain the operational temperature of the equipment, ensuring that it responds appropriately when required. This understanding is vital for maintaining system reliability and preventing potential outages or failures in the electrical grid during adverse weather conditions. Other considerations, such as the implications of frozen ground on underground cables or the potential for electrical fires, are also important, but they do not directly relate to the immediate operational concerns of breaker functionality as affected by extreme cold.