according to its recently
published Guiding Opinions
on Promoting the Development of “Internet Plus” Smart
Energy, which sets a goal of
increasing the proportion of
renewable energy, promoting
the clean and effcient use of
fossil fuels, and advancing
the energy market through
Defnition of a Smart PV Plant
A smart PV plant has less
need for manual intervention because it operates automatically. A smart plant can
automatically identify, diagnose, and repair faults, thereby increasing the electric
energy yield, lowering O&M
costs, and boosting revenues.
A smart PV system must go
through three stages in its
development: automation, information gathering, and intelligence.
Automation refers to reducing on-site manual operations
with components that cannot be easily damaged and require
no on-site expert diagnosis or manual repair. Information gathering refers to high-precision, intelligent detection on strings;
fast, reliable, secure, and low-cost transmission of that information; and high-reliability storage and monitoring of background data. Intelligence means using big data analysis to
detect problems and offer O&M suggestions. Intelligence can
enable remote expert guidance based on remote mobile O&M,
preventative maintenance, and automatic data reporting at different levels based on an automatic report system.
Inside a Smart PV Plant
The intelligence of a smart PV plant derives from three distinct
layers: the bottom layer, the intermediate layer, and the top layer.
The bottom layer contains hardware devices and is
equipped with a smart PV controller. The controller can precisely monitor each PV string and independently detect each
channel of input voltage and current, laying a basis for accurate fault location detection and O&M effciency improvement. Multi-channel maximum power point trackers (MPPTs)
allow for refned energy management. High-precision sensors
ensure higher data precision and improve the electric energy