Chile's "Three O'Clock" reported on March 25 that a Chilean consulting company released a report saying that the risk of another large-scale power outage in Chile's national power system still exists, mainly because the excessive proportion of small distributed generation (PMGD) brings system vulnerability.
PMGD power stations account for 30% of daytime power generation, but lack grid coordination. When the system frequency fluctuates, these power stations will be disconnected from the grid within 0.1 seconds, resulting in a sudden reduction in power supply and increasing the risk of system collapse. The power outage on February 25 this year was the collapse of the central-southern subsystem of Chile after the frequency dropped sharply to 47.5 Hz, causing a nationwide power outage. The report recommends taking emergency measures, including optimizing frequency control, restricting the operation of power stations that are prone to disconnection, and incorporating large-scale PMGD disconnections into extreme accident plans.
