Storm-proofing 1% of power lines protects entire grid from blackouts
The damage from storms like Hurricane Harvey caused serious blackouts to the Texas power grid Mark Ralston/AFP via Getty Images Storm-proofing as little as 1 per cent of the power lines in an electricity grid could slash the chance of hurricane-induced blackouts by between fivefold and 20-fold, a simulation suggests. The demonstration, which took place in a simulated version of the Texas electricity grid, could help boost the resilience of power transmission systems worldwide. “The importance of various lines to the overall system only becomes apparent if we study the partially destroyed states of the grid that occur as the storm progresses,” says Frank Hellmann at the Potsdam Institute for Climate Impact Research in Germany. To identify those critical power transmission lines most in need of protection, Hellmann and his colleagues examined how the grid responds to widespread damage over time. They focused on large “failure cascades” that occur after the initial storm damage: as power plants and transmission lines shut off to protect themselves from additional damage, they cause secondary power outages that can …