Abstract
The intermittence and uncertainty of wind power and photovoltaic power have hindered the large-scale development of both. Therefore, it is very necessary to properly configure energy storage devices in the wind-solar complementary power grid. For the hybrid energy storage system composed of storage battery and supercapacitor, the optimization model of hybrid energy storage capacity is established with the minimum comprehensive cost as the objective function and the energy saving and charging state as the constraints. A simulated annealing artificial fish school algorithm with memory function is proposed to solve the model. The results show that the hybrid energy storage system can greatly save costs and improve system economy.
Highlights
In recent years, wind power and photovoltaic power generation have developed rapidly, and the installed capacity has increased year by year
In order to make wind energy and solar energy a continuous and stable energy source, and become an alternative energy source that can compete with conventional energy sources, certain energy storage devices must be configured in the wind-solar complementary power grid, which can effectively suppress the fluctuation of wind-solar output power[2]
The system includes a hybrid energy storage system composed of a wind power generation system, a photovoltaic power generation system, a storage battery and a super capacitor, and a power conversion device
Summary
Wind power and photovoltaic power generation have developed rapidly, and the installed capacity has increased year by year. In order to make wind energy and solar energy a continuous and stable energy source, and become an alternative energy source that can compete with conventional energy sources, certain energy storage devices must be configured in the wind-solar complementary power grid, which can effectively suppress the fluctuation of wind-solar output power[2]. It is difficult for a single energy storage to have the advantages of high efficiency, high energy density, high power density, and long life at the same time, which is not conducive to the safe and reliable operation of the system[3]. It is very necessary to economically and rationally configure the capacity of the hybrid energy storage system
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