Under the background of realizing the "dual carbon goal", it is expected that in the next five years, my country's annual new installed capacity of photovoltaics will reach 62 to 68GW, and the cumulative installed capacity of China's photovoltaic power plants will reach 561GW in 2025. In the process of the rapid development of photovoltaics, problems such as accidents of photovoltaic power plants occur from time to time, and improving the safe operation of photovoltaic power plants has become the focus of photovoltaic practitioners.

So, how to ensure the safe and stable operation of power plants while accelerating the growth of photovoltaic installed capacity?

Photovoltaic power station hides three accident "hidden dangers"

In view of the photovoltaic safety accident problem, the main reasons for the photovoltaic power station accident problem are as follows:

First, photovoltaic module connectors, commonly known as DC connectors. As the power of the components increases, the current will also increase accordingly. In this case, the connectors of the components will generate more and more heat, thereby causing a fire hazard. Therefore, the connector of the module is one of the most prone to fire in the DC link of the module.

Second, the DC combiner box. In the DC combiner box, there are dense lines and electrical appliances, plus a closed metal box. Under the sealed structure environment, the electrical appliances and connection points in the box will have relatively high heat, and it is not easy to dissipate heat. In the case of long-term operation It is easy to cause problems such as electrical heating and tripping, which become a hidden danger of fire.

Third, the medium and high voltage cable connectors. 35kV medium voltage electrical system and 110kV/220kV high voltage booster system are common in power stations. The voltage level of medium and high voltage products is relatively high, and cable accessories are prone to partial discharge and breakdown problems. Therefore, this is also a photovoltaic system. One of the hidden dangers of power station accidents.

Safety is the core issue of photovoltaic power plants, and it is also the foundation for customers to obtain investment returns. Whether it is common photovoltaic application scenarios on the ground, mountains, water, roofs, etc., or other forms of "photovoltaic +" scenarios, once there is a hidden safety hazard, it is like a time bomb. I don't know when the power station accident will happen. . The industry should stifle potential safety hazards in the cradle in front-end links such as power station design and installation.

XINHUI's products and solutions "ensure power station safety"

PV-HBFx Branch Junction Box

The fast photovoltaic connector is a connection solution for photovoltaic strings and photovoltaic cables, suitable for 1500V DC system of TUV/IEC & UL. Fast, error-free installation with Insulation Displacement Technology (IDC). The connector is filled with silicone gel to help the connector achieve IP68 waterproof rating, ensuring that the connector can operate underwater for a long time.

Test Standard

·IEC 62852 and UL6703

Product Features and Benefits

·Up to about 80% reduction in installation time compared to traditional photovoltaic connectors

·Wide range of applications: one connector can cover applications from 2.5 mm² to 6 mm²

·Easy installation without any special tools

·No need to strip the cable insulation, increasing the life of the connection point and improving the installation efficiency

·Integrated design to avoid the risk of missing parts

·CE certification