Fixed photovoltaic array connection optimization based on BIM

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...

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Problems solved by technology

However, the above studies did not consider the acquisition of the optimal connection method and the realization of the automatic connection of photovoltaic arrays at the same time.

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