Pump storage unit operation stability state deterioration early warning method and pump storage unit operation stable state deterioration early warning system

The invention discloses a pump storage unit operation stability deterioration early warning method and a pump storage unit operation stable state deterioration early warning system. The pump storage unit operation stable state deterioration early warning method comprises the steps that stability real-time monitoring of a pump storage unit is carried out to acquire a monitoring value of a stability parameter; according to the working condition parameter of the pump storage unit, an upper limit value and a lower limit value, which are corresponding to a current working condition and a currently-compared stability parameter, are searched in a pre-established numerical early warning model; when the monitoring value is greater than or equal to the lower limit value, and is smaller than or equal to the upper limit value, the stability state of the pump storage unit is determined to be normal, and the monitoring value is stored in a normal state record library; when the monitoring value is smaller than the lower lim