Abstract: In order to achieve the goal of carbon peak and carbon neutrality, China's new energy will further develop by leaps and bounds, and continue to be connected to the grid at a rate several times that of electricity load growth, becoming the main power source of the power system. With the widespread access of high proportion distributed photovoltaic, it is also a great challenge to realize its "considerable, measurable and controllable" communication access mode. Therefore, a kind of AC-DC carrier fusion technology is proposed to complete the local aggregation of the components, confluence boxes, inverters, environmental sensing and other information of multiple distributed photovoltaic stations in the transformer station area, realize the full coverage of photovoltaic system signal monitoring, and provide rich and reliable data support for the precision collaborative scheduling of massive distributed photovoltaic.