Today, there is no doubt that the solar photovoltaic power generation industry is developing rapidly. Behind the good momentum is mature technology and the accumulation of years of experience, so is the solar photovoltaic cable.
In the construction of solar photovoltaic power stations, in addition to photovoltaic modules, inverters, etc., it is also very important to choose the correct and appropriate photovoltaic cable materials, not only related to profit, but also need to pay attention to the safety problem.
Special solar photovoltaic cable is highly adaptable to the environment. Universal cable does not exist for the time being. However, there are corresponding solar cables that can overcome various problems for different photovoltaic power station use environments.
According to different uses and operating environments, solar photovoltaic cables are classified as follows:
Common environment: outdoor laying
Advantages: Low cost, low line loss
Disadvantages: need a large degree of protection, such as humidity, exposure, high and low temperature, ultraviolet, etc.
Common environment: indoor laying
Advantages: Large transmission capacity, good economic benefits
Weakness: Stability needs to be improved
Special cable for solar photovoltaic
Common environment: For the harsh environmental conditions of photovoltaic power stations
Advantages: Good safety performance, long life, strong environmental adaptability, high mechanical strength
At present, a variety of professional solar photovoltaic cable products have been developed in the photovoltaic industry, such as electron beam cross-link cable, whose rated temperature is 120℃, can resist the harsh climate environment, withstand mechanical impact. Another example is RADOX cable is according to the international standard IEC216 development of a solar photovoltaic cable. In the outdoor environment, its service life can reach 8 times of rubber cable, PVC cable 32 times.
Cable conductor material
Most cables are connected by connectors. Conductor materials can be divided into copper core and aluminum core.
The advantages of copper cable are: good oxidation resistance, long life, good stability, small power loss, small voltage drop, good flexibility, easy penetration.
Compared with copper core cable, aluminum core cable has poor oxidation resistance, which is easy to cause faults.
Cable insulation sheath material
During the troublesome operation and maintenance of photovoltaic power stations, cables will be impacted by various external forces, which makes it necessary for photovoltaic power stations to use special solar photovoltaic cables. In order to prevent the occurrence of dangerous events, scientific research on solar photovoltaic cables has made good progress. Researchers have found that materials that have been cross-linked by radiation, can be exposed to the thermal properties, mechanical properties and chemical properties of cable insulation material.
Solar photovoltaic cable technology is still moving toward a more perfect and professional direction. On the basis of excellent technical support, more accurate judgment and selection of appropriate cables will bring better benefits.