Abstract
In the new energy power generation intensive access area, the problem that the new energy power generation has strong random and intermittent cannot be ignored. The rational allocation of battery energy storage system can play a role in absorbing new energy surplus power generation, stabilizing new energy power generation fluctuation, improving power quality, reducing power load peak and filling trough load and so on. In addition, it can provide a certain length of emergency power support when unplanned outages occur in the areas where the multi-complementary energy device is running. In this paper, the mathematical model of economic benefit of energy storage system is established with the aim of the maximum annual return on investment of energy storage system in its whole life cycle. The model is optimized by extracting the key influence factors, and the economic benefit under different configuration schemes is analyzed under the premise of one hour independent power supply for the specific loads, and the optimal allocation scheme of the energy storage system is obtained. An example is given to analyze the energy storage scheme and the annual return on investment of the Pb-C battery energy storage system at different discharge depths during the typical working days. The feasibility of the model and the solution method is verified.
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