Energy storage lithium batteries mainly refer to lithium battery packs used
in solar power generation equipment, wind power generation equipment, and
renewable energy storage energy. At present, energy storage batteries have
applications such as renewable energy grid connection, grid auxiliary services,
grid transmission and distribution, distributed and microgrid, and user side
energy storage.
1. Renewable energy grid connection
In recent years, in order to maximize the utilization of renewable energy
and improve the reliability and efficiency of power grid operation, various
energy storage technology research and engineering demonstration projects have
developed rapidly. The application of high-capacity battery energy storage
technology in wind and photovoltaic power generation can smooth out power output
fluctuations, reduce their impact on the power system, improve the tracking plan
output capacity of power stations, and provide backup energy for the
construction and operation of renewable energy power stations.
2. Grid auxiliary services
Power grid auxiliary services are divided into capacity based and power
based services, with capacity based services such as grid peak shaving, load
following, and black start. Energy storage battery technology can improve the
frequency regulation capability of the power grid by reducing the loss of
traditional frequency regulation power sources caused by frequent switching; In
terms of improving the peak shaving capacity of the power grid, the energy
storage system can respond to scheduling instructions in a timely and reliable
manner based on changes in power supply and load, and change its output level
according to the instructions.
3. Power grid transmission and distribution
Energy storage battery systems can improve distribution quality and
reliability. When there is a fault in the distribution network, it can be used
as a backup power source to continuously supply power to users; In terms of
improving power quality, as a controllable power source for the system, it
manages the power quality of the distribution network, eliminates voltage sag,
harmonics and other problems, while reducing the investment in backbone network
expansion and saving expansion funds.
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