Distributed energy storage system based on photovoltaic station

Abstract

The invention relates to a distributed energy storage system based on a photovoltaic station, and the system is connected with a power dispatching control center and a photovoltaic station control system. The distributed energy storage system comprises a photovoltaic field area distributed energy storage subsystem, a distributed energy storage equipment signal transmission communication subsystem and a photovoltaic distributed energy storage cooperative control subsystem which are connected in sequence, wherein the photovoltaic distributed energy storage cooperative control subsystem is respectively connected with a power dispatching control center and a photovoltaic field station control system. Compared with the prior art, the method has the advantages that the profitability of the photovoltaic power station and the overall benefit of dispersed energy storage are improved, and the like.

Description

technical field [0001] The present invention relates to a distributed energy storage system, in particular to a distributed energy storage system based on photovoltaic fields. Background technique [0002] Against the background of increasingly depleting fossil energy and global climate change caused by greenhouse gases, photovoltaic power generation systems have developed rapidly in recent years due to their clean, efficient and renewable conditions. With the rapid development of photovoltaics and other clean energy sources, the power grid consumption capacity and power system adjustment resources that are suitable for the development scale are gradually facing challenges. High-quality development of energy. In order to achieve the goals of carbon peaking by 2030 and carbon neutrality by 2060 as scheduled, the country will build a new power system with new energy as the main body. Photovoltaic plus appropriate amount of energy storage can solve the problem of photovoltaic ...

AI Technical Summary

Problems solved by technology

However, the centralized energy storage of photovoltaic field stations has the following shortcomings. From the perspective of safety, the aggregation of centralized energy storage batteries brings greater fire safety risks and hidden dangers, and battery safety needs to be optimized to the greatest extent.

In terms of economics, firstly, the cost of land acquisition for photovoltaic stations is relatively high. Due to the large area occupied by centralized energy storage, more equipment storage space is required for photovoltaic stations. For existing photovoltaic stations, there is often no land space To store centralized energy storage equipment, for the planned construction of photovoltaic stations, additional land acquisition is required to store energy storage equipment. Second, the centralized energy storage system can only be connected to the AC side of the grid. Since the energy storage battery has a DC output form, there DC / AC Conversion Loss

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