Intelligent power supply method for multi-battery system

Abstract

The invention discloses an intelligent power supply method for a multi-battery system. The intelligent power supply method disclosed by the invention at least comprises two batteries, namely a first battery and a second battery, and comprises the following steps: (1) detecting SOC of the first battery and the second battery, and detecting a generating state of a generating set; (2) according to the generating state of the generating set, estimating generated power of the generating set; (3) obtaining a difference value between the generated power and load-demanded power, and judging whether the batteries need to be put in according to the difference value; and (4) according to cost of the batteries put in, determining magnitudes of power respectively output by the first battery and the second battery. The intelligent power supply method disclosed by the invention can adjust optimized output of the multi-battery system according to a power supply ratio of a distributed power supply, sothat single output power of each battery is reduced, and optimization of number of use of multiple batteries is realized.

Description

technical field [0001] The invention relates to the technical field of smart grids, in particular to an intelligent power supply method for a multi-battery system. Background technique [0002] In the existing technology, the intelligent deployment of the power grid has gradually gained the attention of practitioners with the optimization of the control chip. With the gradual popularization of new energy power generation, the use of new energy sources such as photovoltaics and wind power for power generation is being widely used. At the same time, batteries are used as Backup energy storage, on the one hand, it can effectively carry out backup energy storage. However, when it is used as backup energy storage, due to the stability of photovoltaic, wind power and other power generation units, it will be used more frequently, and the service life of the battery will affect the cost of the entire grid. Plays a key role. How to optimize and control the number of times the battery...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the intelligent deployment of the power grid has gradually gained the attention of practitioners with the optimization of the control chip. With the gradual popularization of new energy power generation, the use of new energy sources such as photovoltaics and wind power for power generation is being widely used. At the same time, batteries are used as Backup energy storage, on the one hand, it can effectively carry out backup energy storage. However, when it is used as backup energy storage, due to the stability of photovoltaic, wind power and other power generation units, it will be used more frequently, and the service life of the battery will affect the cost of the entire grid. Plays a key role. How to optimize and control the number of times the battery is used is something that needs to be paid attention to in the current distributed power generation and the future smart grid. Then, in the existing technology, the battery is only used as backup energy, such as UPS. For emergency start-up or energy supplementation, the cost of energy storage devices such as batteries is not considered according to the internal specific state of distributed power generation or the transmission efficiency of electric power, etc.

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