In the wind power generation project, because of the characteristics of randomness, intermittence and non schedulability of wind energy, the voltage and power and other power quality parameters of the wind power generation group will fluctuate. Therefore, it is recommended to carry out power quality monitoring before grid connection, and the installation of power quality online monitoring device is particularly critical.

Power quality online monitoring system is mainly divided into two parts, monitoring equipment and monitoring background. The power quality monitoring device is mainly installed in the front end of the boost grid, which can realize the real-time and uninterrupted monitoring of the power quality of each boost station, and upload the collected data to the background server of the main station through the network.

During the on duty inspection, the project site staff can view the power quality data of each booster station in real time, analyze the power quality status of each booster station before grid connection efficiently and accurately, complete the inspection work smoothly, and ensure the safe, efficient and stable grid connection.

Therefore, it is necessary to install power quality on-line monitoring device for wind power generation projects. A power quality on-line monitoring device costs tens of thousands of yuan, but it can play a great role in preventing the damage caused by sharp rise or reduction of voltage due to power quality problems in the future.