Distribution network is a bridge connecting the preceding and the following, which directly connects the power transmission and transformation system with users. China's distribution network is divided into two voltage levels of 35kV and 10kV. Among them, 10kV distribution network, as the distribution network of final power users, has a wide distribution area, complex network structure, and power quality is easily affected. Therefore, it is necessary to install online power quality monitoring device to monitor the power quality in the power grid in real time, so as to provide basis for customized power quality solutions.

When installing the power quality monitoring device, it is necessary to investigate the site. First of all, the storage conditions are required. The power quality monitoring device should be stored in the rain proof and snow proof room with the ambient temperature of - 10 ℃ ~ + 45 ℃ and the relative humidity of no more than 80%. The surrounding air does not contain acid, alkaline or other corrosive and explosive gases.

Secondly, test voltage: set the relevant operating voltage according to the site. Strain is an important physical property of materials and structures. When measuring the temperature value of optical fiber, the power quality online monitoring device first sends laser signal to the optical fiber to be measured, and the laser signal propagates in the optical fiber. Due to the uneven structure of the amorphous material in the micro space of the optical fiber, there is a small part, which enables the response team to respond immediately, so as to greatly reduce the potential safety hazards and environmental hazards.

After the power quality monitoring device is put into use, it will further improve the safety and reliability of the distribution network system, thus reducing the probability of accidents and bringing significant economic benefits.