The construction of photovoltaic power station system runs through the whole process of project construction, determines whether the power station can operate reliably and safely for a long time, also affects the income of the power station owner, and plays a pivotal role in the whole power station.
During the construction of photovoltaic power station system, the installation of main equipment components includes photovoltaic module installation, support system fixation, inverter installation, transformer installation, and fixed foundation setting. What is easy to forget in the construction design is PV cable Construction. Cable to photovoltaic power station
The overall profitability and operation safety of the photovoltaic power station also play a vital role. Its construction is also the most scientific and meticulous in the photovoltaic power station construction system. Scientific cable construction can not only reduce power station damage, improve efficiency, enhance reliability, but also improve the income of the power station owner
Benefits. Unscientific and reasonable cable construction, such as cable crushing, cutting and abrasion, will cause the whole power station to be in an extremely dangerous state, short circuit of lines, fire and even personal injury. These problems will bring devastating disasters to the power station. Most of the time, electricity
The potential safety hazard of the station is not caused by the specification, quality, connection and other problems of the cable we selected, but because no scientific protection and fixation measures have been taken for the photovoltaic cable. Therefore, the scientific laying, protection and fixation of photovoltaic cable is imminent and urgent.
Through years of continuous project practice and experience summary, we introduce the following measures for scientific laying, protection and fixation of photovoltaic cables:
1. Cable support box
Using cable tray, orderly place all types of cables in the tray, and cover the cover plate to avoid cable damage due to direct exposure to households. This fixing method is widely used in residential and commercial large-scale ground power station projects;
2. Cable support
The cable support is used to fix the cable in the photovoltaic support system through the steel cable, install a hook on the steel cable, and place the cable support in the hook, so as to protect and fix the cable;
3. Fix it to the component hole with a tie
Many project site construction experience shows that there are few suitable materials on site, which can effectively fix the cable wires of series and parallel components. Therefore, in order to make scientific and rational use of resources, PE ties are used to straighten and straighten the cables and fix them in the fixing holes of the components.
4. Cable buckle fixation
At present, the common cable buckles in the market are mainly divided into the following typical types:
(1) Made of stainless steel 304, the cable is buckled into the preset space by using the elasticity of metal materials, and finally the stainless steel buckle is effectively fixed with the frame of the solar cell module;
(2) The plastic buckle is made of PP+nylon material and plastic injection molding process. The plastic cable buckle can be fixed at any position of the track in the support system, and then the construction is extremely simple and fast when the cable is buckled into the hook.
There are two types of fixation:
(1) Binding fixation
The PV cable and PV support system are tied together, which is simple and beautiful after fixation. This fixation method is widely used in Japan.
(2) Embedded fixation
It is a safe and beautiful way to embed the photovoltaic cable directly into the photovoltaic support system and use the track of the slope photovoltaic support system to embed the cable into the track.
