Reliability of Grid Infrastructures

Almost every day, a major electrical failure occurs somewhere in the world within the electrical power grid. The causes vary and can include ageing infrastructure, environmental effects, external interferences (such as animals, projectiles, or moving objects), human error, and in many cases, the inability of equipment to withstand the stresses for which it was designed—such as thermal, dielectric, short-circuit, or mechanical operations.

Properly designed, installed, and maintained protection systems limit damages in most cases. However, when extensive damage occurs, the root cause may not be identified until a thorough analysis and investigation are conducted.

The reliability of electrical transmission and distribution grid equipment is influenced by a combination of factors, including design and materials, supply chain issues, manufacturing standards, testing, maintenance practices, environmental conditions, and the need to address emerging challenges like cyber threats.

A comprehensive, holistic approach that addresses these factors is essential for maintaining a resilient and reliable electrical grid.

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