The invention relates to a voltage reactive control device (VQC), comprising: system management module, data collection module, I/O module and communication module, where the system management comprises system management computer, and connects with display unit and printer as well the communication module through internal system bus; the communication module comprises intelligent communication card, Ethernet card and modem, where the intelligent card is connected with serial bus and connected with the I/O module and data collection module through the serial bus; the I/O module comprises input switch quantity collection module and output switch quantity output module; the data collection module comprises analog collection module. The invention can implement voltage reactive control of four transformer voltage regulating mechanisms, and 24 groups of capacitors and 16 groups of reactors on 8 buses, improving system reliability and manage and monitor various indexes of electric energy quality. |