With the increasing number of distributed photovoltaic power plants, many large and small photovoltaic power plants, from Shenzhen to dozens of kilometers, are separated by hundreds of meters to several kilometers. In order to monitor the data of these power plants in a unified way, a photovoltaic monitoring system is basically installed to monitor the data of distributed photovoltaic power plants in the whole project. The photovoltaic system made by Delian Software in Yantai Development Zone can not only detect power generation data, but also support real-time alarm and fault reporting, which is convenient for online operation and maintenance. If the photovoltaic power station is used with energy storage, it can also carry out charge and discharge control, PCS, battery detection and so on.