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Photovoltaic global maximum power tracking control method based on improved dragonfly algorithm

A technology of maximum power tracking and control method, applied in photovoltaic power generation, control/regulation system, calculation and other directions, can solve the problems of loss, slow iteration speed of dragonfly algorithm, easy to fall into local extreme power and other problems, to overcome slow iteration speed, Improve the search speed and the ability to avoid local extremes, and improve the effect of tracking efficiency

Inactive Publication Date: 2021-02-05
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY
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Problems solved by technology

[0004] In view of this, the present invention provides a photovoltaic global maximum power tracking control method based on the improved dragonfly algorithm to solve the problems caused by the slow iteration speed of the dragonfly algorithm in the process of photovoltaic maximum power tracking in the prior art and the tendency to fall into local extremum. Technical issues with power loss

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  • Photovoltaic global maximum power tracking control method based on improved dragonfly algorithm

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[0051]The technical solutions and technical effects of the present invention will be further described in detail below in conjunction with the accompanying drawings of the present invention.

[0052] Please see figure 1 and figure 2 , in a specific embodiment, a photovoltaic global maximum power tracking control method based on the improved dragonfly algorithm, comprising the following steps:

[0053] S100. Obtain the current photovoltaic output voltage and current.

[0054] For example, see image 3 , the output characteristics of the dual-diode model of the photovoltaic cell can be expressed as:

[0055]

[0056] Among them, U and I represent the output voltage and output current of the photovoltaic module; I pv Indicates the photogenerated current; I d1 , I d2 Represents the current flowing through diodes D1 and D2; R s , R p Represents series and parallel resistors. .

[0057] in,

[0058]

[0059]

[0060] Among them, I 01 , I 02 Indicates the rever...

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Abstract

The invention provides a photovoltaic global maximum power tracking control method based on an improved dragonfly algorithm, and belongs to the technical field of power grid dispatching automation. According to thephotovoltaic global maximum power tracking control method, a dragonfly algorithm is adopted, the photovoltaic global maximum power is tracked and controlled, a Levy flight mode is introduced, the dragonfly algorithm is improved, the tracking efficiency of the photovoltaic global maximum power is improved, the search speed of the algorithm is increased, the local extremum avoiding capacity of the algorithm is improved, and the problems that in the photovoltaic maximum power tracking process, the dragonfly algorithm iteration speed is low and power loss is caused due to the fact that the dragonfly algorithm is prone to fall into a local extreme value are solved.

Description

technical field [0001] The invention belongs to the technical field of power grid dispatching automation, and in particular relates to a photovoltaic global maximum power tracking control method based on an improved dragonfly algorithm. Background technique [0002] With the depletion of fossil energy, the development of clean and renewable energy has become an urgent task for all countries. Photovoltaic power generation technology is considered to be the most promising form of energy in the future. At present, the efficiency of solar photovoltaic power generation is the bottleneck restricting its further development, and improving the efficiency of photovoltaic power generation is an important direction for its development. [0003] An important technology to develop and utilize photovoltaic energy is photovoltaic maximum power tracking technology. Because photovoltaic power generation equipment is usually built outdoors, it is easily blocked by dark clouds, dust, tree sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67G06N3/00
CPCG05F1/67G06N3/006Y02E10/56
Inventor 薛飞马鑫张爽田蓓李宏强张迪王超杨慧彪周雷顾雨嘉张汉花吴玫蓉梁剑任勇
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY
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