光伏电站有辐射么？科学的分析来了

辐射是指物体以波或粒子的形式向周围空间发射能量的过程。自然界中的一切物体只要其温度在绝对零度以上，都会以电磁波或粒子的形式不停地向外界传送能量，换句话说，世间万物都有辐射，包括人体自身。

但是，并非所有的辐射都是有害的，有些甚至是我们离不开的，比如太阳的辐射——阳光，大地万物的生长都需要阳光。

是不是所有的辐射都对人体产生危害呢？其实不然，我们常把辐射分为两大类：电离辐射和非电离辐射。

电离辐射是一种高能量辐射，会破坏生理组织，对人体造成伤害，但这种伤害一般是具有累积效应的，核辐射、X光就属于属于典型的电离辐射。

非电离辐射远没达到将分子分解的能量，主要以热效应的形式作用于被照射物体。无线电波产生的电磁辐射照射结果一般只有热效应，不会伤及生物体的分子键。而我们一般所说的电磁辐射，就属于非电离辐射。

光伏发电是将光能通过半导体的特性直接转化为直流电能的，再通过逆变器将直流电转换成可以被我们使用的交流电。

光伏系统是由光伏组件，支架，直流电缆，逆变器，交流电缆，配电柜，变压器等组成，其中支架不带电，自然不会产生电磁辐射。光伏组件和直流电缆，里面是直流电流，方向没有变化，只能产生电场，不能产生磁场。

输出变压器虽然是交流电，但频率很低，只有50Hz，产生的磁场很低。逆变器是把直流电转为交流电的设备，里面有电力电子变换，频率一般为5-20KHz，因此会产生交变电场，所以也会产生电磁辐射。国家对光伏逆变器电磁兼容性有严格的标准。

（各种家用电器和光伏组件的辐射对比）

光伏逆变器的电磁辐射，同家用电器相比，大约和笔记本电脑差不多，低于电磁炉，电吹风，冰箱。

因此，建设光伏电站不仅不会对人的健康产生危害，还可以为地球提供绿色清洁的优质能源，是人类未来能源发展方向。

如果光伏电站有辐射，人也不能站在电站下面呢，您说是不是啊？

Radiation is the process by which an object emits energy into the surrounding space in the form of waves or particles.  Everything in nature, as long as its temperature is above absolute zero, continuously transmits energy to the outside world in the form of electromagnetic waves or particles. In other words, everything in the world radiates, including the human body.  

But not all radiation is harmful. Some are indispensable, such as the sun's radiation -- sunlight, which everything on earth needs to grow.  

The picture  

Radiation hazards  

Is all radiation harmful to the human body?  In fact, we often divide radiation into two broad categories: ionizing and non-ionizing.  

Ionizing radiation is a kind of high energy radiation, which can destroy physiological tissue and cause harm to human body. However, such harm generally has cumulative effect. Nuclear radiation and X-ray are typical ionizing radiation.  

Far from reaching the energy required to break molecules apart, non-ionizing radiation mainly acts on irradiated objects in the form of thermal effects.  The electromagnetic radiation produced by radio waves usually produces only thermal effects and does not damage the molecular bonds of the organism.   What we generally call electromagnetic radiation is non-ionizing radiation.  

Cell radiation in a photovoltaic system  

Photovoltaic power generation converts light energy directly into direct current electricity through the characteristics of semiconductors, and then converts the direct current electricity into alternating current electricity that can be used by us through an inverter.  

The photovoltaic system is composed of photovoltaic modules, brackets, DC cables, inverters, AC cables, power distribution cabinets, transformers and so on. The brackets are not charged and will not naturally produce electromagnetic radiation.   Photovoltaic modules and DC cables, which contain DC current in the same direction, can only generate electric fields, not magnetic fields.  

The output transformer, although ac, has a very low frequency, only 50Hz, which generates a very low magnetic field.  Inverter is a device that converts direct current into alternating current. There is power electron transformation in it. The frequency is generally 5-20khz, so alternating electric field will be generated, so electromagnetic radiation will also be generated.   China has strict standards for electromagnetic compatibility of photovoltaic inverters.  

The picture  

(Radiation comparison of various household appliances and PHOTOVOLTAIC modules)  

The electromagnetic radiation of photovoltaic inverters, compared with household appliances, is about the same as that of laptops, and lower than that of induction cookers, hair dryers, and refrigerators.  

Therefore, the construction of photovoltaic power stations will not harm human health, but also provide green and clean high-quality energy for the earth, which is the future direction of human energy development.  

If the photovoltaic power station has radiation, people can not stand under the power station, do you agree?