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Literature first proposed the reconfigurable topology of the battery, in which the system reconfiguration could be achieved through five control switches per cell. In the series topology, each battery cell had only two controllable switches, which were used to connect other cells in series or bypass .
As increasement of the clean energy capacity, lithium-ion battery energy storage systems (BESS) play a crucial role in addressing the volatility of renewable energy sources. However, the efficient operation of these systems relies on optimized system topology, effective power allocation strategies, and accurate state of charge (SOC) estimation.
First, a new type of BS topology is proposed, which can greatly improve the reliability and economy of the system when single or multiple battery cells fail. Compared with the conventional topology, the maximum number of faulty battery cells that the new topology can bear and the economic gains will increase.
Assuming that there are four clusters of batteries in parallel, when the centralized PCS topology is adopted, BS is connected to the power grid through a PCS, and the system operating reliability is 0.9986.
Therefore, around the production, transmission and consumption process of photovoltaic power generation, a Photovoltaics energy storage system (PVESS) containing photovoltaic power generation subsystem and energy storage subsystem, and energy utilization subsystem is formed.
Although hybrid PV energy storage systems have been studied and their optimization has been explored. However, with the goal of value co-creation of PVESS and reduction of abandoned photovoltaics, there are few researches on collaborative management and collaborative decision model construction.
Firstly, a value co-creation analysis framework for promoting capacity allocation of PVESS under the Energy Internet is analyzed. Secondly, the basic model of hybrid energy storage system (HESS) combining battery energy storage system (BESS) and superconducting magnetic energy storage system (SMES) is constructed.
The collaborative management of the subsystems is the key path to value co-creation of the PVESS. Energy storage technology can improve the stability of the electricity supply and is an important way to achieve the consumption of photovoltaic resources.