Fixed photovoltaic array connection optimization based on BIM

A photovoltaic array and connection technology, which is applied in the field of optimizing the connection of photovoltaic modules based on BIM and shortening the return on investment of photovoltaic systems, can solve problems such as the realization of automatic connection of photovoltaic arrays without considering the optimal connection method at the same time.

Pending Publication Date: 2018-06-22
CENT SOUTH UNIV
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Problems solved by technology

However, the above studies did not consider the acquisition of the optimal connection meth

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  • Fixed photovoltaic array connection optimization based on BIM
  • Fixed photovoltaic array connection optimization based on BIM
  • Fixed photovoltaic array connection optimization based on BIM

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] 1 Problem Analysis

[0029] Due to the roof area, shape (such as figure 1 Shown) and other factors, the installed capacity is limited. Moreover, the electricity generated by the photovoltaic array is a nonlinear direct current, and its output characteristics are affected by factors such as solar irradiance and surrounding environment. When the photovoltaic array is illuminated by the sun with uneven distribution, that is, with partial shadow, the output characteristics will be more complicated. By optimizing the connection mode of the photovoltaic array to reduce the impact of partial shadow on the output power of the photovoltaic system, so as to obtain higher photovoltaic power gene...

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Abstract

The invention provides a connection optimization scheme for a roof photovoltaic system based on a building information model (BIM). According to the scheme, digital modeling is performed on a building, a solar annual motion model is established, and the exposure dose of a fixed photovoltaic component is acquired; modeling simulation is performed on a cell model and a photovoltaic array hardware circuit, corresponding exposure dose data is allocated to each photovoltaic module, an output characteristic P-V curve of an array is acquired, and the generating capacity of the photovoltaic componentis calculated; the generating capacity, inverter model selection, roof cost, roof photovoltaic array cost and other factors of different connection schemes are comprehensively considered, and an optimization objective function is established; and a globally optimal solution of the objective function is solved, an optimal connection scheme and inverter type are acquired, and automatic connection ofthe photovoltaic array is realized in the BIM. Through the scheme, by selecting an appropriate photovoltaic array connection mode, the photovoltaic investment return period can be obviously shortened, and the effect of optimizing the roof photovoltaic system is achieved.

Description

technical field [0001] The invention belongs to the field of building photovoltaic simulation, and more specifically relates to a method for shortening the investment return period of a photovoltaic system based on BIM photovoltaic module optimization connection. Background technique [0002] Building Information Modeling (Building Information Modeling, BIM) is a model established by simulating real building information through digital technology. The current US National Building Information Modeling Standard (National Building Information Modeling Standard, NBIMS) defines: “BIM is the digital representation of the physical and functional characteristics of a facility; BIM is a shared knowledge resource, a shared information The process of providing reliable data for all decisions in the whole life cycle from conception to demolition; at different stages of the project, different stakeholders insert, extract, update and modify information in the BIM model to support and refl...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20G06F30/367
Inventor 裘智峰向劲勇赵鑫涛暴悦爽桂宁桂卫华
Owner CENT SOUTH UNIV
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