According to the Coordinating Body of the National Interconnected Electric System (SENI), the maneuver, contrary to protocol, generated a high-intensity short circuit that activated the protection systems and triggered a chain reaction that left the entire country without power.

The document explains that the fault triggered a chain reaction: several nearby lines were disconnected to isolate the problem, and the Eastern generation, equivalent to 575 MW, was separated from the rest of the system, causing an imbalance between supply and demand.

Large-capacity power plants automatically tripped to protect themselves, following their safety protocols.

Although the National Interconnected System (SENI) managed to stabilize the frequency for the first 89 seconds, the system was weakened by the lack of synchronized cold reserve, which caused an abrupt frequency drop that led to the total collapse of the system.

To strengthen the electrical system, specialists recommended continuing the installation of protective devices in double-busbar substations and making operational adjustments to take advantage of new technologies in thermal and renewable energy generators.

They also recommended integrating battery storage systems for auxiliary services and standby power, as well as reviewing and adjusting the operating times of protective devices and automatic disconnection schemes.

abo/arm/mem/mpv