New energy distributed energy storage application control system

Abstract

The invention relates to a new energy distributed energy storage application control system, which includes a new energy power generation device, an energy storage unit, a power generation / energy storage control unit, an inverter unit, etc., and a system master control unit; power generation / energy storage control The unit is connected to the new energy power generation device, the energy storage unit, the inverter unit and the power grid, and communicates with the system master control unit and the energy storage unit. Under the control of the system master control unit, the power generation / energy storage control unit can convert the electricity generated by the new energy power generation device or the AC power of the grid and store it in the energy storage unit, or directly invert it into AC power to supply power to the grid or to AC loads , and can also invert the electric energy stored in the energy storage unit into AC power to supply power to the grid or to AC loads. The invention can maximize the power generation efficiency of the new energy power generation device in the actual application environment, and can also realize the function of peak regulation and valley regulation of the power grid, so that the electric energy of the power grid can be reasonably utilized and the waste of electric energy can be reduced.

Description

technical field [0001] The invention relates to the fields of electric energy storage, off-grid and grid-connected inverter power generation, etc., specifically refers to storing solar energy and grid electric energy in energy storage devices (such as battery packs), and then off-grid or grid-connected inverter when needed A control system for power generation. Background technique [0002] In the field of photovoltaic power generation, the currently commonly used solar energy utilization models mainly include figure 1 The photovoltaic utilization mode of small off-grid power generation, attached figure 2 The photovoltaic utilization mode and auxiliary image 3 There are several types of photovoltaic utilization modes of large-scale energy storage power stations. [0003] attached figure 1 The utilization mode of small-scale photovoltaic off-grid power generation is suitable for applications such as street lamps, billboards, small-scale photovoltaic building integration...

AI Technical Summary

Problems solved by technology

[0008] (1) Solve the problem that the photovoltaic power generation system reduces the utilization rate of solar energy due to the short board effect of solar cells;

[0009] (2) Solve the problems of existing energy storage power stations occupying a large amount of land resources, high maintenance costs and low benefits;

[0010] (3) Solve the problem that the existing photovoltaic power generation system does not have the function of power grid peak regulation and valley regulation;

[0011] (4) Solve the problem of surplus electric energy storage

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