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

A technology of charge and discharge control and pumped energy storage, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of long response time and poor stability of energy storage devices, and achieve flexible and diverse energy storage methods of the system, and system operation Stability and high energy efficiency

Inactive Publication Date: 2014-04-30
NORTHEASTERN UNIV LIAONING
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  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment approach

[0074] In one embodiment of the present invention, the model of the DC wind power generating set is SN-500W, the model of the photovoltaic panel is SN-150W, the model of the wind-solar hybrid controller is WWS06A-24-R-C, and the local energy storage unit controls The model of the PLC in the device is Siemens S7-200, the storage battery is a lead-acid storage battery, the storage battery model is 6-GFM-200Ah, and the storage storage batteries are connected in parallel with each other to form a battery pack.

[0075] The circuit schematic diagram of the local energy storage unit is shown in figure 2 As shown, the core of the energy storage mode control of the local energy storage unit is a local energy storage unit controller, which is a charging and discharging device switching switch composed of a PLC chip. The wind-solar hybrid controller outputs one DC voltage and one DC current to the PLC in the local energy storage unit controller. The PLC has 6 output signals, among whic...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J3/38H02J9/00
Inventor 孙秋野张化光滕菲何志强李昕同李玉帅王占山王迎春张欣
Owner NORTHEASTERN UNIV LIAONING
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