Research on 10KW amorphous silicon photovoltaic grid-connected system

The photovoltaic grid-connected system is the fastest growing key application field in the photovoltaic generating system. In this paper, combining with the photovoltaic grid-connected system practical application program of Tianjin University and taking powerone inverter as the core, the data transmission progress between the grid-connected inverter and upper computer are introduced in detail. And we write the computer program, which can help to display the important input and output signal of the system by upper computer in communication mode. This is beneficial to the monitoring and management of system. This paper also introduces the inverse power control and the start-stop time control by PLC. At last, we make a speculation on the problems of photovoltaic grid-connected system which still need to be studied after monitoring the running of this system for a period of time.