A new photovoltaic cable

Abstract

A novel photovoltaic cable is disclosed, including a conductor, 125 DEG C irradiation crosslink halogen-free polyolefin insulating lay is irradiated outside the conductor to form an insulating wire core, a polyester film insulating layer is longitudinally coat outside the insulating wire core, an outer conductor is braided outside the polyester film insulating layer, and a nano-scale insulating agent is coated on the outer surface of the outer conductor, and then 125 DEG C irradiation crosslinking halogen-free flame retardant polyolefin anti-corrosion outer sheath is irradiated and crosslinked. The cable has the characteristics of high temperature resistance, ozone resistance, ultraviolet resistance, short-time overload capability, long service life, wear resistance, oil resistance, corrosion resistance, high tensile strength and electromagnetic compatibility, etc. At the same time, the cable can realize the transmission of positive and negative current, reduce the demand of engineering cable, reduce the engineering cost, reduce the cable laying quantity, shorten the construction cycle, wiring neatly and facilitate the maintenance in the future.

Description

technical field [0001] The invention relates to a novel photovoltaic cable, which is applied to a junction box of a photovoltaic module in a solar power generation system and a power connection line between photovoltaic inverters. Background technique [0002] With the rapid development of my country's social economy and the continuous increase of population, the over-exploitation of non-renewable energy (mainly oil, natural gas, coal, etc.) not only depletes my country's fossil energy, but also has a negative impact on my country's ecological environment, seriously endangering national health. Solar energy is one of the most abundant renewable resources, and photovoltaic power generation is a form of direct application of solar energy. Compared with other energy sources, solar energy has many advantages, such as safety and reliability, no noise, no pollution, no need to consume fuel, and can be easily combined with buildings, etc. These advantages are incomparable to conven...

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Problems solved by technology

[0003] At present, it is used in the power connection line between the photovoltaic module junction box and the photovoltaic inverter in the solar power generation system - the special photovoltaic cable mainly uses a single-core cable, and as the power line between the photovoltaic junction box or the inverter, it is DC Transmission system, it needs two power lines, one positive and one negative, to complete the current transmission, so it is necessary to lay two single-core single-core photovoltaic cables of different colors. Due to large-scale photovoltaic power plants, the demand for this special photovoltaic cable is very high. Large, at least tens of thousands of meters are required, and at most hundreds of thousands of meters, so the project laying volume is particularly large, and two power lines, one positive and one negative, need to be laid at the same time, resulting in a particularly large laying volume, and due to the dense crossing of cables , which is easy to cause confusion and is not conducive to future maintenance

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