Method, device and equipment for early warning stability state degradation trend of hydroelectric generating set

The invention provides a hydroelectric generating set stability state degradation trend early warning method. Comprising the following steps: when a hydroelectric generating set is in a stable state and a degradation trend early warning request is received, analyzing a time period type required to be processed by degradation trend early warning from the degradation trend early warning request, and when the time period type is a first period type, obtaining a plurality of first operation data of the hydroelectric generating set in a first time period, determining corresponding initial water head and initial active power when the hydroelectric generating set operates with different first operation data, determining a data change rate of the hydroelectric generating set in a first time period according to the plurality of first operation data, and determining a data change rate threshold value corresponding to the first operation data according to the initial water head and the initial active power; and when the