The goal of online power quality monitoring device is to use centralized power quality monitoring device for medium and low voltage power system or medium and low voltage power distribution system of industrial and mining enterprises. The centralized scheme can greatly reduce the cost of the system and has better performance price ratio.

The on-line power quality monitoring device can be installed directly below the switch cabinet, so the decentralized scheme is adopted. Considering the practical application environment and practicability of the distribution system, the mechanical structure and function of the compact design are carried out. Considering that the reliability of communication signal between power quality online monitoring device and remote management center may be relatively poor, in order to ensure the reliable storage of implementation data, local monitoring computer should be set in the station, which is mainly responsible for real-time data exchange and storage with front-end device, and the computer is responsible for communication with remote management center, and the communication mode can be Ethernet Network or RS485 mode.

The power quality monitoring panel can be independently installed on one panel. For the design of some power stations, the power quality online monitoring device is required to be independently installed on one panel, which is different from other electrical secondary equipment.

Or the single device of power quality online monitoring device is assembled with other protection panels and cabinets, such as: power quality online monitoring device group screen, industrial measurement screen, metering screen, etc.