On-line monitoring device for high voltage shunt capacitor

The utility model relates to an on-line monitoring device for a high voltage shunt capacitor, which comprises a plurality of capacitors, an indoor portion and an outdoor portion. The outdoor portion comprises a plurality of signal transducers, a plurality of data acquisition units used for collecting voltage signals set out by the signal transducers, an isolation transformer used for supplying power for the data acquisition units and a data merging unit. The indoor portion comprises a switch machine and a data-processing system, the data merging unit is connected with the switch machine, and the data-processing system comprises a signal analysis unit and a storage unit. The on-line monitoring device enables the photoelectric technology to be introduced in a high voltage shunt capacitor running status detection device through optical fiber, thoroughly solves problem that existing monitoring device for the high voltage shunt capacitor cannot conduct high and low potential isolation, adopts a plurality of data acquisition units to concurrent work, and improves efficiency of high voltage shunt capacitor running status detection device.