Small-size wind and light complementation water suction and energy storage grid-connected electricity generating system as well as charging and discharging control method

Abstract

The invention relates to a small-size wind and light complementation water suction and energy storage grid-connected electricity generating system as well as a charging and discharging control method and belongs to the technical field of new energy electricity generation and electrics. The method provided by the invention has the characteristics that the energy source utilization rate is high, the system energy storage mode is flexible and diversified, the system operation is stable, and the like. Compared with the traditional electricity generation, inversion and grid-connected system, the system has the advantages that the energy source utilization rate is about 10 percent higher than that of the traditional system; the system adopts a digital signal processor (DSP) for effectively controlling a local energy storage unit, so the switching speed among different energy storage modes is high, the defect of lag of control instruction execution is overcome, and the system operation stability is greatly improved; and the system adopts the energy storage mode of combining various energy storage modes, so the response time of an energy storage device is short, the energy storage mode becomes flexible and diversified, and different work conditions of the system can be adapted.

Description

technical field [0001] The invention belongs to the field of new energy power generation and electrical technology, and in particular relates to a small wind-solar complementary pumped storage grid-connected power generation system and a charging and discharging control method. Background technique [0002] With the development of economy and society, energy consumption is increasing, environmental pollution and the rapid growth of electricity demand make people pay more and more attention to the development of renewable energy. Wind energy and solar power generation technology have attracted more and more attention because of their unique environmental protection and economy. Therefore, in recent years, China's new energy power generation business has also developed rapidly. Due to China's vast territory, long coastline, and abundant wind energy and solar energy resources, vigorously developing wind energy, solar power generation technology and related energy storage, powe...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of existing methods, the present invention proposes a small wind-solar hybrid pumped-storage grid-connected power generation system and a charging and discharging control method to solve the problems of long response time and poor stability of the energy storage device in the system, making the energy storage method flexible Reliable and adaptable

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