光伏發電作為綠色新能源的一種，以其投資小、安裝工程小、后期維護簡單、投資效益明顯等優點，正是因為光伏發電既綠色環保，又有經濟效益，得到越來越多人的認可，下面來講講免費安裝光伏發電的原理和注意事項。

As a kind of green new energy, photovoltaic power generation has been recognized by more and more people because of its small investment, small installation project, simple maintenance in the later period, and obvious investment benefits. Now let's talk about the principle and precautions of free installation of photovoltaic power generation.

免費安裝光伏發電基本原理就是“光伏效應”。光子照射到金屬上時，它的能量可以被金屬中某個電子全部吸收，電子吸收的能量足夠大，能克服金屬內部引力做功，離開金屬表面逃逸出來，成為光電子。

The basic principle of free installation of photovoltaic power generation is "photovoltaic effect". When a photon shines on a metal, its energy can be fully absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the internal gravity of the metal to do work, escape from the metal surface and become a photoelectron.

“光生伏特效應”，簡稱“光伏效應”。是指光照使不均勻半導體或半導體與金屬結合的不同部位之間產生電位差的現象。它是由光子（光波）轉化為電子、光能量轉化為電能量的過程；其次，是形成電壓過程。有了電壓，就像筑高了大壩，如果兩者之間連通，就會形成電流的回路。

"Photovoltaic effect", referred to as "photovoltaic effect". It refers to the phenomenon of potential difference between heterogeneous semiconductors or different parts of semiconductors and metals combined by light. First of all, it is a process of converting photons (light waves) into electrons and light energy into electrical energy; Secondly, it is the process of voltage formation. With voltage, it is like building a dam. If the two are connected, a current loop will be formed.

太陽能電池，通常稱為光伏電池。目前的主要的太陽能電池是硅太陽能電池。用的硅是“提純硅”，其純度為“11個9”，比半導體或者說芯片硅片“至少兩個9”；又因為提純硅結晶后里頭的成分不同，分為多晶硅和單晶硅；目前，單晶硅太陽能電池的光電轉換率為15％左右，高達到了24％。

Solar cells are commonly referred to as photovoltaic cells. At present, the main solar cell is silicon solar cell. The silicon used is "purified silicon" with a purity of "11 nines", which is "at least two nines" higher than that of semiconductor or chip silicon chip; Because the components of purified silicon are different after crystallization, it can be divided into polycrystalline silicon and monocrystalline silicon; At present, the photoelectric conversion rate of monocrystalline silicon solar cells is about 15%, up to 24%.

光伏發電注意事項：

Precautions for photovoltaic power generation:

不要在不利的環境下安裝或操作分布式光伏發電系統，例如強風和陣風天氣、潮濕結霜的屋面表面等。

Do not install or operate the distributed photovoltaic power generation system in adverse environment, such as strong wind and gusty weather, wet and frosty roof surface, etc.

不要在沒有安全防護措施的情況下在屋頂上安裝光伏組件，其中防護措施包括跌落防護、梯子和樓梯及個人防護裝備等。

Do not install PV modules on the roof without safety protection measures, including fall protection, ladders and stairs and personal protective equipment.

在有光照的情況下光伏發電系統會產生直流電，電流隨著光線的增強而增強，如果觸碰組件電子線路會有遭到電擊或者燒傷風險。

When there is light, the photovoltaic power generation system will generate direct current, and the current will increase with the increase of light. If the electronic circuit of the module is touched, there will be a risk of electric shock or burns.

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