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Method and device for establishing photovoltaic cell simulation model considering local shading

A photovoltaic cell and simulation model technology, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve problems such as inability to provide a reliable theoretical basis for photovoltaic cell applications, simulation errors, etc., to avoid avalanche breakdown Problems, improvement of simulation effect, effect of delaying service life

Inactive Publication Date: 2018-10-16
SHENZHEN POWER SUPPLY BUREAU
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Problems solved by technology

Photovoltaic array is the most commonly used form of photovoltaic cells in engineering applications, and the traditional equivalent circuit model of photovoltaic cells does not consider the situation of local shading, so there are errors in its simulation, which cannot provide a reliable theoretical basis for the application of photovoltaic cells

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  • Method and device for establishing photovoltaic cell simulation model considering local shading
  • Method and device for establishing photovoltaic cell simulation model considering local shading

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Embodiment Construction

[0065] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0066] In order to illustrate the technical solution of the present invention, the following will be described through specific embodiments in conjunction with the accompanying drawings.

[0067] Such as figure 1 As shown, the embodiment of the present invention proposes a method for establishing a photovoltaic cell simulation model considering partial shading, and the method includes the followi...

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Abstract

The invention discloses a method and device for establishing a photovoltaic cell simulation model considering local shading. The method comprises the steps of obtaining standard parameters of a photovoltaic cell; determining equivalent series resistance, equivalent parallel resistance, P-N junction effect current and P-N junction effect reverse saturation current of the photovoltaic cell simulation model according to the standard parameters of the photovoltaic cell; according to the standard parameters, the equivalent series resistance, the equivalent parallel resistance, photo-generated current, the P-N junction effect current, the P-N junction effect reverse saturation current and an avalanche breakdown voltage, determining output load current of the photovoltaic cell simulation model; based on the equivalent series resistance, the equivalent parallel resistance, equivalent diode P-N junction direction saturation current and the output load current, establishing the photovoltaic cellsimulation model considering the local shading; the equivalent parallel resistance is connected in parallel with a reverse current source, and a bypass diode is connected in parallel between the positive and negative electrodes of a photovoltaic cell assembly. The device is used for implementing the method.

Description

technical field [0001] The invention relates to photovoltaic power generation technology, in particular to a method and device for establishing a photovoltaic cell simulation model considering local shading. Background technique [0002] With the depletion of fossil energy and the increasing environmental problems, renewable energy such as photovoltaics has been more widely used. At the same time, photovoltaic charging stations for electric vehicles that have emerged in the transportation industry have gradually entered residential quarters, commercial areas and industries. Parks, etc., and a large number of photovoltaic panels are installed near the building complex, which will inevitably lead to partial shading of photovoltaic equipment. [0003] Partial shading means that in the photovoltaic power generation system, due to factors such as dust and buildings, the sunlight is uneven, and the shaded photovoltaic cell components in the series branch become loads, consuming th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 张炀
Owner SHENZHEN POWER SUPPLY BUREAU
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