Low-frequency low-voltage combined load shedding method

The invention relates to a low-frequency low-voltage combined load shedding method. Mainly by using frequency and voltage response information measured on a load bus, on the basis of considering the load characteristic and the frequency-voltage interactive influence, a load shedding amount of low-frequency load shedding and a load shedding amount of low-voltage load shedding are respectively calculated, the bigger one thereof is used as an actual load shedding amount, and system frequency and load voltage are restored to rated values as soon as possible after disturbance by gradually shedding the load. The low-frequency low-voltage combined load shedding method can provide a guarantee for frequency stability and voltage stability of a power system under serious disturbance.