Dynamic self-adaptive protection device of power capacitor

The utility model relates to a dynamic self-adaptive protection device of a power capacitor. Three current transformers and three voltage transformers are connected with a multi-channel selector which is connected with an analog-to-digital (A/D) converter of an embedded type microcomputer. Three control wires output by the embedded type microcomputer are connected with the multi-channel selector. A parameter setting key is connected with the embedded type microcomputer, and the embedded type microcomputer is connected with control fling-cut switches K1-K3 through a control relay and outputs control signals to the control fling-cut switches, thereby achieving protection of the power capacitor. The embedded type microcomputer is connected with a display device and connected into a ferroelectric memory provided with an unlimited-time storage function, thereby not only protecting the power capacitor, but also greatly prolonging service life of the power capacitor.