Energy storage is an indispensable resource for flexibility regulation in the power system. How the energy storage system is constructed and used affects the progress of power structure adjustment to a certain extent. In recent years, the development momentum of distributed photovoltaics has been rapid, and the installed capacity has risen rapidly, promoting the combination of distributed photovoltaics and decentralized energy storage. It can become a virtual power plant, and through integrated dispatching, control and management, the power system is more flexible and flexible. At the same time, the combination of distributed photovoltaics and energy storage can play functions such as power conservation, energy cost reduction, carbon reduction, and emission reduction on the user side, thereby easing energy storage costs and promoting the healthy development of the energy storage industry.

As we all know, new energy power generation is fluctuating, intermittent and unstable. With the continuous growth of the installed scale of grid-connected new energy, the power grid has an increasingly urgent need for flexible adjustment resources.

In contrast, distributed photovoltaics and distributed energy storage have the following advantages:

Distributed photovoltaic energy storage can build a small micro-grid system on the user side, enhance the friendliness of photovoltaic grid connection, and improve the self-consumption rate of photovoltaics. In the case of abnormal power supply such as power cuts, power outages, and natural disasters, users can turn on the off-grid state to ensure important or basic load requirements. Distributed PV with energy storage is conducive to diverting the construction costs of energy storage systems, allowing investors to pay more attention to the carbon emission reduction, peak shaving and valley filling, emergency power backup, black start, power supply end "power quality management" and other functional values, helping users to save energy costs and other power equipment input costs.

At the same time, distributed photovoltaic energy storage can be combined with business scenarios such as power sales, charging, power exchange, and load management to realize the integrated development of user-side source, network, load, and storage, and realize the self-coupling of energy in the region, which is conducive to revitalizing social capital and cultivating New business models under new scenarios to promote high-quality development of energy consumption.

In addition, distributed photovoltaic energy storage is conducive to improving the flexibility and security of the power grid and promotes "mainly renewable energy and clean energy power generation (accounting for more than 70%-80%), the combination of backbone power and distributed power, and The power system construction and development of the combination of the power grid with the local distribution network and micro-grid”. By aggregating a large number of distributed photovoltaic, energy storage, and other flexible adjustment resources, constructing virtual power plants, encouraging users to explore energy flexibility and demand response enthusiasm through market-oriented means, enhancing the adjustment ability of the power system, saving grid investment, and providing energy for the grid. Make supplements and build a new power system that is "Unbreakable, indestructible and economically strong".