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Photovoltaic maximum power point tracking method and energy supply system

A maximum power point, photovoltaic system technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve the problems of fast particle update speed, high complexity and randomness, slow particle update speed, etc., and achieve light weight and power supply Stable and reliable, convenient installation and wiring

Pending Publication Date: 2021-12-10
FUZHOU POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the simplicity of algorithm implementation and design, particle swarm optimization and its variants are widely used in GMPP tracking of photovoltaic systems, but the traditional particle swarm algorithm has two shortcomings: slow particle update speed leads to long convergence time, fast particle update speed leads to divergence
Other hybrid methods include the combination of P&O and GWO, the combination of P&O and particle swarm optimization algorithm and Lagrangian interpolation particle swarm algorithm, and the update method of Levi distribution, although it provides impressive convergence speed and steady-state performance. Satisfactory effects, but they present higher complexity and more randomness

Method used

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  • Photovoltaic maximum power point tracking method and energy supply system
  • Photovoltaic maximum power point tracking method and energy supply system
  • Photovoltaic maximum power point tracking method and energy supply system

Examples

Experimental program
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Effect test

Embodiment 1

[0059] See figure 1 This embodiment is improved on the basis of conventional MPPT disturbance observation, and is high efficient, highly efficient, highly stable, highly efficient, highly stable in accordance with the flying squirrel Search Optimization. After the inverter is working properly, the output voltage V of the photovoltaic solar panel is respectively calculated. PN And output current I PN When the photovoltaic system encounters the unpredictable partial occlusion, it will cause multiple peaks in PV, potentially reduce the performance of the photovoltaic system, and the traditional MPPT algorithm often enters the local convergence. Unable to reach the global maximum power point (GMPP) Operation, resulting in a lot of waste of energy.

[0060] Therefore, this embodiment provides a photovoltaic maximum power point tracking method, including the following steps:

[0061] Initialize the position of the flying rat; Take the value of the PWM converter in the i photovoltaic sys...

Embodiment 2

[0107] This embodiment provides a full-weather supply power supply system for a high pressure knife gate state photodance detecting device, the photovoltaic system of the photodetector receiver including the photoelectric sensor receiver power supply terminal 100 and the photoelectric sensor receiver control terminal 300, and the photoelectric detecting device is transmitted. The photovoltaic system includes a photoelectric sensor transmitting party power supply terminal 200 and a photoelectric sensor transmitter control terminal 400; the photoelectric sensor receiver power supply terminal 100 includes a receiver solar photovoltaic plate 110 and a receiving cataract unit 120, the photoelectric sensor launch The power supply terminal 200 includes an emarator solar photovoltaic plate 210 and an emitter battery pack 220; the receiver solar photovoltaic plate 110 and the transmitter solar photovoltaic plate 210 are used to receive light energy and convert it into electrical energy, an...

Embodiment 3

[0114] This embodiment provides a photovoltaic maximum power point tracking device, including a memory, a processor, and a computer program stored on the memory and can operate on the processor, the processor performs the program, such as the present invention. The maximum power point tracking method described in Example.

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Abstract

The invention relates to a photovoltaic maximum power point tracking method and an energy supply system. Based on a flying mouse optimization algorithm, the method comprises the following steps: taking values of different duty ratios as initial flying mouse positions Nfs; taking the instantaneous photovoltaic power output PPV(d) of the position of each flying mouse as the mass of a food source; defining a fitness function f of MPPT and calculating the fitness of the position of each flying mouse; sorting according to the fitness, and declaring that the position of the flying mouse with the maximum photovoltaic power output is on the hickory tree, the next optimal position of the flying mouse is on the acorn tree, and the other flying mice are on the normal trees; setting seasonal supervision conditions, and updating the positions of the flying mice; if the position changes of all the current flying mice are smaller than a threshold value or reach the set maximum iteration number, terminating optimization, and outputting the tracked position of the flying mouse located at the global maximum power point (GMPP) to serve as the working duty ratio of the current PWM converter.

Description

Technical field [0001] The present invention relates to a method of maximum power point tracking photovoltaic devices and energizing, it relates to technical field of photovoltaic power generation. Background technique [0002] In the form of the cause of the power grid continues to prosper, substation intelligent control into the spotlight. The most basic is the intelligent control substation operation sequence, which refers to a series of operations of the apparatus according to the substation preprogrammed operation order by the sequence control server, whether the variations of the device according to the execution result information determination operation in place, and the next instruction until the completion of all instructions. Discovered through research, only when the switching position of the auxiliary contacts, and by the image recognition is not possible to reliably disconnector state position sensing leads, if carried out in a case where the power transmitting fals...

Claims

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Application Information

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IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 李宽宏李长元李利贤纪哲强高翔陈高汝陈晖蔡嘉炜陈佑健林海源陈锦麟李先锋
Owner FUZHOU POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER
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