Why 9V cold shrink cable accessories are ideal for floating photovoltaic power plants?
In 2020, as the Chinese government announced to the world its commitment topeak carbon by 2030 and carbon neutrality by 2060;, it is expected that non-fossil energy will account for about 25% of primary energy consumption in 2030, and the total installed capacity of wind and solar energy will reach 1.2 billion kilowatts. The above have injected new impetus into China's green energy development. Recently, provincial and municipal governments have also frequently issued documents. In the 14th Five-Year Plan, the proportion of new energy has been greatly increased.
As one of the two important markets of the new energy industry, photovoltaics will also usher in the spring of cross-domain development. In the past, photovoltaic power plants were mainly ground-based power plants. With the eastward shift of the new energy industry, the floor space has become a more prominent problem. Therefore, drawing on the experience of foreign photovoltaic development, in recent years, floating photovoltaic power stations using water surface resources have gradually appeared.
What are the requirements for the cable accessories of the floating photovoltaic power station?
Compared with ground-based power plants, floating photovoltaic power plants have the advantages of saving land, increasing power generation, reducing evaporation and algae reproduction, and saving costs, but at the same time, they also have high requirements for equipment, difficult construction, and many uncertain factors (strong wind, water level, icing) ) and other unfavorable factors.
Cable Layout of Jiuwei Floating Photovoltaic Power Station
Cable accessories are an important part of the power supply system of photovoltaic power plants. From an environmental point of view, since the power station is completely built on the water surface, if the cabinet is not well sealed, it may cause excessive moisture inside the cabinet, causing problems such as electrical equipment discharge. In addition to factors such as day and night temperature difference, humidity and maintenance costs, in order to ensure the stable operation of floating photovoltaics, there are higher requirements for the reliability of cable accessories.
This requires cable accessories to be able to operate continuously and reliably under extreme conditions.
9V cold shrink cable accessories are ideal in this environment.
9V Cold Shrink Cable Accessories
√ Huge cold shrink pressure – the core of cold shrink technology
√ Electric field control advanced material technology – maintain high electrical performance
√ Modified Weather Resistant Outer Insulation – Reliable Operation in Harsh Conditions
√ High-strength support core rope – for easy installation and large cold-shrinking pressure
After ten years of hard work, continuous innovation and breakthrough, 9V cold shrinkable cable accessories have unique core advantages:
One of the core technical advantages - huge systolic pressure
√ Maintain constant and lasting radial pressure on the cable insulation body,breathing; with the cable
√ Huge pressure can maintain long-term andadaptive; waterproof and sealing performance
√ Reduce internal residual air gaps, significantly improve interface electrical performance, and extend operating life
√ One specification accessory can be applied to cables of various specifications and cross-sections
Test data and operating experience show that the systolic pressure of an accessory is directly related to the dielectric strength of its internal interface
Electrical margins and operational reliability are significantly improved as cable accessories put more pressure on the insulation to shrink!
Core Technology Advantage 2 - Advanced Materials for Electric Field Control
Possible surface electric field strength at 10kV: 4kV/mm
Electric field strength control (evacuation) is the core function of medium and high voltage cable accessories!
9V medium voltage cold-shrinkable cable terminals all adopt the high dielectric constant (Hi-K) method!
Black technology to prevent cable discharge:
Compared with the traditional stress cone method, the high dielectric constant electrical stress control method adopted by the 9V cold shrinkable cable accessories has a larger stress control range and a more uniform electric field distribution. Therefore, in a humid environment, the probability of terminal flashover and discharge can be greatly reduced.
The third core technical advantage - modified weather-resistant outer insulation
√ Silicone rubber is hydrophobic
√ Water droplets on the surface are easy to slip off when exposed to rain or moisture, preventing electricity from creeping through the rain channel
√ Good stain resistance, even if the surface is stained, it is still hydrophobic
√ Silicone rubber is mainly Si-O, the bond energy is greater than the ultraviolet energy, and has anti-ultraviolet performance
√ No carbonized conductive channel will be formed, and anti-creepage material is added to the outer insulation of modified silicone rubber
Jiuwei adopts silicone rubber outer insulation with modified formula to ensure its operating life under harsh weather conditions!
9V cold shrinkable cable accessories use modified silicone rubber for outer insulation, which has good hydrophobicity and UV resistance. The service life of the 9V cold shrinkable cable accessories in the outdoor environment is as long as 30 years, and the operating environment of the floating photovoltaic power station is of course not a problem.
