Overview of the development of halogen-free special cable technology for solar photovoltaic systems

Solar power generation, also known as "photovoltaic power generation"
.
Simply put, according to the principle of photovolt effect, solar cells are used to directly convert solar energy into electricity
.
More importantly, solar PV systems can generate electricity
on both sunny and cloudy days.
Compared with traditional thermal power methods, the advantage of solar photovoltaic power generation is to reduce the emission of carbon and sulfur compounds, thereby effectively reducing the greenhouse effect
.
On the other hand
.
As a resource, solar energy has the advantage of "inexhaustible and inexhaustible", which is incomparable with traditional fossil energy
.

From the perspective of technical conditions, the technology of foreign photovoltaic power generation has a history
of more than 30 years.
It has matured, and some of these countries have built solar power generation networks to achieve the civilian
use of solar power generation.
At present, China's solar cell manufacturing process is very close to the international developed level
.

On February 28, 2005, the Standing Committee of the National People's Congress approved and passed the Renewable Energy Law, which came into effect
on January 1, 2006.
This law has special provisions
to support photovoltaic power generation.
On September 7, 2009, the National Development and Reform Commission announced the medium- and long-term development plan for renewable energy, which proposed that by 2010, the cumulative installed capacity of photovoltaic power generation will reach 300,000 kilowatts, and 2 million kilowatts
in 2020.
These overarching policy frameworks will create a good policy outlook
for solar power generation.

The environmentally friendly cable for solar photovoltaic system is a single-core flexible cable used in the part used in the solar photovoltaic system from the photovoltaic cell to the DC terminal of the photovoltaic converter, which is an important component of photovoltaic equipment, as the backbone of power transmission of solar photovoltaic power generation facilities, directly related to the safety, reliability and advancement of
solar photovoltaic power generation system.
For the special environment of solar photovoltaic cable installation and laying, the cable is required to be flame retardant, oil-proof, anti-solar aging, anti-acid and alkali, etc.
, and should also have environmentally friendly performance
.

With the increase in the construction of solar photovoltaic power generation system facilities, the use of cables is increasing
.
The cables used in all photovoltaic systems must be halogen-free special cables, which have flame retardant, fireproof, non-toxic, and solar aging resistance
.
This will greatly promote the development of
environmentally friendly cables for solar photovoltaic systems.

The traditional flame retardant PVC sheathed cable is mainly used in the distribution line, and the laying environment is mainly in the air or soil, and the additional performance is less
.
If it is used in the harsh environment of the photovoltaic system, because the materials used contain halogen polymers and a large number of halogen flame retardants, as long as the cable is in contact with the flame, the combustion will produce a large number of harmful corrosive halic acid gas and smoke, and corrode the instruments and equipment, resulting in a "secondary disaster"
.
China's solar photovoltaic facilities construction is increasing, photovoltaic system cables should have combustion does not produce harmful corrosive halic acid gas, can be moisture-proof and waterproof, acid and alkali resistant, anti-light aging, so the technical content of photovoltaic system cables will be higher
and higher.

At present, some cable manufacturers develop environmentally friendly cables for solar photovoltaic systems, most of which are designed and produced in accordance with German TUV standards, with halogen-free, anti-ultraviolet, ozone resistance, flame retardant, oil resistance, radiation aging resistance and other properties, complete functions, in line with the requirements of solar photovoltaic systems for the use of cables, and have a wide
market prospect.