Photovoltaic grid-connected power generation system

The grid-connected photovoltaic power generation system is mainly composed of solar photovoltaic modules, inverters and control cabinets.

1. Solar photovoltaic modules: Solar photovoltaic modules are the core part of the solar power generation system, and their function is to convert the sun's radiation energy into electrical energy. The use of high-efficiency solar cell modules has outstanding advantages such as high power generation efficiency, life expectancy of more than 25 years, good consistency and stable quality.

2. Photovoltaic inverter: The DC power generated by the photovoltaic array in the power station is directly integrated into the mains network after being converted into AC power that meets the requirements of the mains grid by the grid-connected inverter. The selected inverter has: low voltage ride-through function, maximum conversion efficiency of 98%, wide input voltage and MPPT voltage range, dual-channel MPPT design, improved power generation, comprehensive monitoring functions, and high protection level: IP65, graphical display window, fast maintenance, small installation weight, intelligent ventilation system and other advantages.

3. System control cabinet: Provide lightning protection and overcurrent protection for the entire photovoltaic power generation system. It can monitor the working conditions of the photovoltaic array and inverter in real time. It forms a double under-voltage protection with the inverter, which can block the power supply of the power station to the grid when the mains power is cut off and avoid the mains power being polluted. The control cabinet adopted by Sangle Company has: DC side lightning protection, fuse protection, DC voltage and ammeter real-time display of photovoltaic array input voltage and current, AC side mains undervoltage protection, voltage and ammeter real-time display of inverter output voltage and current functions.