Capacitor monitoring method, system and equipment based on reactive power acquisition

The invention relates to the technical field of power monitoring, and discloses a capacitor monitoring method, system and equipment based on reactive power acquisition. According to the method, the initial input time of a capacitor is determined based on reactive power data of the capacitor in an SCADA system, replacement information and limit action times of the capacitor in an asset management system are introduced, each input time period is determined according to the replacement information and the initial input time, and then the switching action times of the capacitor in each input time period are counted; and when the switching action frequency is greater than an action frequency threshold value set based on the limit action frequency, judging that the switching action frequency of the capacitor in the corresponding input time period is too high, and giving an alarm. The capacitor on-off action times are counted on the basis of the reactive power data, an early warning function about excessive capacito