Integration of Photovoltaic and Building
Release time:
2023-08-18
Source:
Internet
In the 1980 s, in addition to a large number of photovoltaic ground systems used in remote areas without electricity, nomadic families, navigation lighthouses, isolated island residents power supply and some special areas, has begun to enter the general individual users, networked users and commercial buildings. After entering the 1990 s, with the increasing depletion of conventional energy, the rising cost of power generation and the increasing environmental awareness of people, some countries have begun to implement and promote the building integrated photovoltaic (BIPV) system. China has a large population and high population density. BIPV system combines buildings with photovoltaic systems or photovoltaic modules, which can not only save the area of photovoltaic power generation system, but also reduce its cost, which is in line with China's national conditions, so there is a very broad development in China Space.
In June 2021, the Comprehensive Department of the National Energy Administration issued the ''Notice on Submitting the Whole County (City, District) Roof Distributed Photovoltaic Development Pilot Program'' (hereinafter referred to as the ''Notice'') and pointed out that China's building roof resources are rich and widely distributed., The development and construction of roof distributed photovoltaic has great potential. Carrying out the entire county (city, district) to promote the construction of roof distributed photovoltaics is conducive to the integration of resources to achieve intensive development, is conducive to reducing power peak load, is conducive to saving and optimizing investment in distribution networks, and is conducive to guiding residents' green energy consumption. It is to achieve "carbon An important measure for the two major national strategies of" Peak, Carbon Neutral "and Rural Revitalization. Among them, the total roof area of the party and government organs in the pilot counties (cities and districts) where the project is declared can be installed with photovoltaic power generation of not less than 50%.
The photovoltaic grid-connected power generation application with photovoltaic building integration as the core occupies most of the current photovoltaic market share. The integration of photovoltaic buildings has the following advantages: buildings can provide sufficient area for photovoltaic systems and do not need to occupy additional land; It can save the support structure of photovoltaic system and the transmission cost. Photovoltaic array can replace conventional building materials and save material cost. Installation combined with construction to save installation cost; Decentralized power generation to avoid transmission and distribution losses (5% ~ 10%), reduce transmission, distribution investment and maintenance costs; make the appearance of buildings more attractive. In addition, the building's photovoltaic system can be a reliable power source in places that are often bothered by power outages. Combining solar energy with buildings and developing houses into new buildings with independent power supply and self-circulation is the necessity of human progress and the development of society and science and technology. According to the United Nations Energy Agency, BIPV will become one of the most important emerging industries in the 21st century.
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