Light storage and charging integrated system based on dual-bus microgrid architecture

Abstract

The invention discloses a light storage and charging integrated system based on a dual-bus microgrid architecture. The light storage and charging integrated system comprises a first power generation unit, a second power generation unit, an energy storage unit, a bidirectional energy storage converter and a PCC point switch, wherein the first power generation unit is connected with an AC bus, the second power generation unit and the energy storage unit are arranged in parallel on a DC bus, the bidirectional energy storage converter is connected between the AC bus and the DC bus, the PCC point switch is connected between the AC bus and an AC large power grid, and the bidirectional energy storage converter is used for achieving switch-on and switch-off of the PCC point switch. With the adoption of the structure, multi-stage conversion is reduced, the energy conversion efficiency of the system is improved, the power utilization cost is reduced, and meanwhile, the safety and the stability of the system are also improved.

Description

technical field [0001] The invention relates to the fields of distributed photovoltaics, smart microgrids, energy storage systems, electric vehicle charging stations, etc., and specifically relates to an integrated photovoltaic storage and charging system based on a dual-bus microgrid architecture. Background technique [0002] The impact of climate change on the ecological environment has been recognized by the whole society, and technologies such as distributed photovoltaics, micro-grids, energy storage, and electric vehicles have been rapidly developed and applied. Photovoltaic-storage-charge integration system integrates distributed photovoltaic, energy storage and electric vehicle charging piles into one application system for optimal control to improve the utilization efficiency of comprehensive energy. It has been used in tourist attractions, urban shopping malls, public parking lots, etc. The site has built some demonstrations and applications. These have been built...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention proposes an integrated optical storage and charging system based on a double-bus micro-grid architecture, which solves the problem that the existing single AC bus architecture can only be charged in one direction, requiring multi-stage conversion, resulting in circuit Control complex, inefficient and costly problems

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