Integrated online monitoring device of parallel capacitor

The invention discloses an integrated online monitoring device of a parallel capacitor. The integrated online monitoring device comprises a shell, an energy taking module, a sampling module, a current signal cable and a power cable. The energy taking module and the sampling module are installed in the shell, the energy taking module is connected with the sampling module through the power cable, and the current signal cable is led out of the shell. The energy taking module comprises an iron core, an energy taking coil, a front end impact protection module, a rectifier module, a filter module, a voltage protection energy release module and a DC/DC conversion power output module, wherein a binding post of the parallel capacitor is sleeved with the iron core, the energy taking coil is arranged on one side of the iron core, and the energy taking coil is sequentially connected with the front end impact protection module, the rectifier module, the filter module, the voltage protection energy release module and the DC/DC conversion power output module. The sampling module comprises a current sensor module and a data acquisition module. The integrated online monitoring device of the parallel capacitor is integrated, high in reliability, low in cost and simple in structure.