Energy storage control method and system for grid-connected optical storage and charging system

Abstract

The invention provides an energy storage control method and an energy storage control system for a grid-connected optical storage and charging system. The energy storage control system comprises a mains supply module, wherein the mains supply module is connected with an energy storage module, a photovoltaic power generation module and a user side module respectively, the mains supply module is used for providing a continuous and stable power supply, and the photovoltaic power generation module and the mains supply module are used for photovoltaic grid connection; the energy storage module comprises a plurality of echelon battery energy storage mechanisms and a plurality of new battery energy storage mechanisms; and the user side module comprises a charging pile mechanism and a lighting mechanism. The energy storage control method and the energy storage control system start from the grid-connected optical storage and charging system, fully consider the performance of the photovoltaic power generation module and the energy storage module in the grid-connected optical storage and charging system, reasonably adjust the generated power and power transmission direction of the photovoltaic power generation module according to the amount of electricity consumption of the user side, fully utilize the efficacy of peak-shaving and valley-filling of the energy storage module, and maximizethe generated power of the energy storage module; and the control strategy is simple and effective, and has high engineering application value.

Description

technical field [0001] The present invention relates to the field of optical storage and charging, in particular to an energy storage control method and system for a grid-connected optical storage and charging system, and in particular to a control strategy for a grid-connected optical storage and charging and its hybrid energy storage system. Background technique [0002] With the country's emphasis on new energy, smart energy, energy storage and other industries or fields, these industries have achieved relatively rapid development in recent years. Taking power batteries as an example, at present, the earlier batch of power batteries for vehicles are faced with the issue of cascade utilization or recycling after decommissioning. In terms of cascade utilization, energy storage products are one of the hot spots. [0003] In the micro-grid of smart energy, solar storage charging is a hot field of cascade battery utilization. On the user side, solar storage and charging can n...

AI Technical Summary

Problems solved by technology

However, the current microgrid system has just started, and smooth switching between off-grid and grid-connected is a major technical problem

In addition, the control strategy between hybrid energy storage battery systems when off-grid is another technical problem

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