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Solar power generation system is divided into grid-connected photovoltaic power generation and off-grid pv power generation. Grid-connected photovoltaic power generation refers to a mode of electricity utilization in which the solar power generation system is connected with the municipal electricity and is regulated by the municipal electricity. Off-grid photovoltaic power generation system is an independent solar power generation system. It does not need to be connected with the municipal power. By using batteries, it can meet the demand of users for electricity at night and day.

Solar photovoltaic energy storage and power generation system is an effective energy storage system with mature energy storage technology, wide application and low cost.

Solar photovoltaic energy storage and power generation system can be divided into the following categories:

1. Grid-connected is a photovoltaic energy storage system.

The energy storage configuration of grid-connected photovoltaic power generation system is determined by the energy storage target, which can be divided into smooth output, economic dispatch and micro grid.

2. Independent photovoltaic energy storage system.

Independent photovoltaic energy storage system is widely used in independent systems such as solar street lamp and solar energy field monitoring system.