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Photovoltaic power generation microgrid simulation system

A technology of simulation system and photovoltaic power generation, applied in the direction of system integration technology, design optimization/simulation, information technology support system, etc. The effect of precision

Pending Publication Date: 2020-02-11
ZHEJIANG ZHENENG TECHN RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the disturbance observation method with fixed step size is usually used to track and control the maximum power of the battery, but the method of fixed step size is not flexible. When the current output power is far away from the maximum power source, it has problems such as slow operation of the system.

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  • Photovoltaic power generation microgrid simulation system
  • Photovoltaic power generation microgrid simulation system
  • Photovoltaic power generation microgrid simulation system

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0041] The invention provides a photovoltaic power generation microgrid simulation system. The single diode model of photovoltaic cells provided by the invention can calculate the load current more concisely and accurately by considering both series resistance and parallel resistance, thereby improving photovoltaic power generation The accuracy of the microgrid simulation system. The variable step length perturbation observation method can quickly adjust the current output power t...

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Abstract

The invention relates to a photovoltaic power generation microgrid simulation system, which comprises a simulation photovoltaic cell, a control module and a simulation load, the simulation photovoltaic cell adopts a single-diode model; two ends of the simulation photovoltaic cell are connected with simulation loads; the control module adopts a variable step size disturbance observation method to perform maximum power tracking control on the simulation photovoltaic cell; and the control module is used for fitting the output characteristics of the simulation photovoltaic cell. The single-diode model of the photovoltaic cell provided by the invention has the beneficial effects that the load current can be calculated more simply and accurately by considering both the series resistance and theparallel resistance, so that the accuracy of a photovoltaic power generation microgrid simulation system can be improved. The current output power can be quickly adjusted to the maximum output power through the variable step size disturbance observation method, and then the running speed of the system can be increased on the premise that it is guaranteed that the photovoltaic cell is used for power generation to the maximum extent.

Description

Technical field [0001] The invention relates to the field of photovoltaic power generation, and in particular includes a photovoltaic power generation microgrid simulation system. Background technique [0002] The photovoltaic power generation microgrid system generally consists of photovoltaic arrays, corresponding control devices and loads. Photovoltaic cell is the smallest unit of photovoltaic array. Common models of photovoltaic cell include single diode RS model and double diode D-diode model. The RS model of photovoltaic cell requires fewer parameters for simulation calculation, but the model is accurate when temperature changes. The degree is relatively low. The D-diode model requires a large number of parameters for simulation calculation. Although the calculation of parameters can be reduced by simplifying, the simplification will also have a great impact on the accuracy of the model. [0003] When the photovoltaic cell is working, with the change of light intensity and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q50/06G06F111/10
CPCG06Q50/06Y04S10/50Y02E40/70
Inventor 张浙波罗海华董益华林俊光张曦叶飞宇徐明阳赵申轶俞李斌
Owner ZHEJIANG ZHENENG TECHN RES INST
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