The“ wonderful fate” of the Qatar World Cup and China Photovoltaic

The 2022 football World Cup kicked off in Qatar at 12 a.m. Beijing time on Nov 21. Qatar has officially kicked off the opening match between Qatar and Ecuador at the Albeit Stadium in Hall City, Qatar, marking the start of the 2022 World Cup in Qatar. Although "China" did not participate in this World Cup, there are Chinese elements everywhere in the World Cup, from the playing field, to the water supply network, to the electricity guarantee, a number of Chinese manufacturing not only provided strong support for the Qatar World Cup, but also set industry records.

However, different from previous World Cups, Qatar made a green and low-carbon commitment when hosting this World Cup, aiming to become the world's first "carbon neutral" World Cup. To help achieve this goal, a large number of Chinese new energy, energy conservation and environmental protection companies have gathered in Qatar to help the host achieve clean energy and reduce carbon emissions, and have spent up to $229 billion. The 800-megawatt photovoltaic power plant in Alkassa, built by China, is the first solar power plant in Qatar. It is helping to transform the energy of Qatar. It has not only ignited the "green passion" of fans around the world, but also supported Qatar's commitment to hosting a "carbon balanced" World Cup. This is also a strong proof that "Made in China" is accelerating out of the country, by the overseas market recognition!

The 800MW PV project in Qatar is a typical case of Chinese PV going overseas. In recent years, the export scale of China's photovoltaic products continues to rise. Customs statistics show that in the first three quarters of 2022, China's photovoltaic module exports reached 121.5GW, up 89 percent year-on-year. The export value of the above PV modules was 220.934 billion yuan, exceeding the annual export value in 2021. Among them, Europe, Asia and South America are the main export markets, accounting for 93.81%. The configuration of photovoltaic (solar) DC fuses plays an important role in ensuring the safe and reliable operation of photovoltaic power stations.

As we all know, photovoltaic power generation system equipment is usually composed of photovoltaic panel, solar charging controller, solar cell, photovoltaic inverter, solar DC confluence box and other equipment. In photovoltaic power station, the fusion of the confluence box is a common failure. Although it has little impact on the power generation, it is easy to cause fire accidents and has a great impact on the safety of the power station. So today we will analyze the causes of the fusion box fuses and how to take preventive measures. But before that, let's take a look at how solar energy is converted into electricity. What are the advantages of solar power?

A: Solar power generation There are two ways of solar power generation, one is the light-heat-electricity conversion mode, the other is the direct conversion mode of light-electricity.

(1) The light-heat-electricity conversion method uses the heat generated by solar radiation to generate electricity. Generally, the solar collector converts the heat absorbed into the steam of the working medium, and then drives the steam turbine to generate electricity.

(2) Photoelectric direct conversion mode This mode is to use the photoelectric effect, the solar radiation can be directly converted into electric energy, the basic device of photoelectric conversion is the solar cell. Solar cell is a device that converts solar energy directly into electric energy due to the photogenic volt effect. It is a semiconductor photodiode. When the sun shines on the photodiode, the photodiode will turn the solar energy into electric energy and generate current. When many cells are connected in series or parallel, they can form a solar cell array with a relatively large output power.

Therefore, it can be seen that the use of solar power generation is a very good way, solar power generation is also a very ideal energy, relatively speaking, it takes a relatively short time, but also very environmental protection and energy saving, will not lead to environmental pollution problems, very flexible and permanent, the input cost is not high, is a cost-effective way of power generation.

-Part of the content is taken from Baidu Encyclopedia.

In the photovoltaic flow box device, the DC fuse is mainly used to protect the system wiring from overheating and fire. The melting principle of the DC fuse is that the current flows through the fuse is too large, the fuse is heated, and the heat is not dispersed in time, and the heating up continuously leads to the melting point, thereby melting the fuse. Due reason:

(1) Some fuses have quality problems;

(2) The material and process of the fuse base material and process, there are poor contact with the fuse with the base, and the heat increases heat;

(3) The weather in summer is hot, continuously high temperature, and the environmental humidity is large, resulting in fluctuations in the formation of the group series due to the temperature coefficient, and the quality of the fuse is unstable;

(4) The non -anti -diode is installed in the flow box, which causes a group of high voltage to charging a low voltage and low voltage to form an internal circulation. Generally, the positive pole of the convergence box is equipped with anti -anti -diode, and the reverse current is small or it is considered that the reverse current cannot pass. Therefore, the relative negative electrode is not easy to melt.

The above four points are the cause of the fuse melting. So how do we take preventive measures?

(1) Do a good job of selection and supervision of the flow box equipment, and check the quality of the fuse and the base;

(2) Examination and inspection of the fuse and base of the entrance to meet quality needs;

(3) Regular insulation testing of the flow box to ensure that the group strings are qualified;

(4) Strengthen the data monitoring of daily equipment, find the group series current abnormal, quickly verify and eliminate hidden dangers of faults, and at the same time do a good job of data statistics and analysis;

(5) Verify the fuse current of the fuse and conduct multiple fuse product models for comparison experiments;

From this we can see that due to factors such as the geographical environment, construction process, fuse quality, and insurance base quality of different projects, the number and proportion of the fuse of the photovoltaic power station have different quantities and proportion. Therefore, the photovoltaic power station not only needs to strengthen daily supervision and inspection If you work, you must also find the fuse of the fuse in time and replace it. When we 

In the photovoltaic flow box device, the DC fuse is mainly used to protect the system wiring from overheating and fire. The melting principle of the DC fuse is that the current flows through the fuse is too large, the fuse is heated, and the heat is not dispersed in time, and the heating up continuously leads to the melting point, thereby melting the fuse. Due reason:

(1) Some fuses have quality problems;

(2) The material and process of the fuse base material and process, there are poor contact with the fuse with the base, and the heat increases heat;

(3) The weather in summer is hot, continuously high temperature, and the environmental humidity is large, resulting in fluctuations in the formation of the group series due to the temperature coefficient, and the quality of the fuse is unstable;

(4) The non -anti -diode is installed in the flow box, which causes a group of high voltage to charging a low voltage and low voltage to form an internal circulation. Generally, the positive pole of the convergence box is equipped with anti -anti -diode, and the reverse current is small or it is considered that the reverse current cannot pass. Therefore, the relative negative electrode is not easy to melt.

The above four points are the cause of the fuse melting. So how do we take preventive measures?

(1) Do a good job of selection and supervision of the flow box equipment, and check the quality of the fuse and the base;

(2) Examination and inspection of the fuse and base of the entrance to meet quality needs;

(3) Regular insulation testing of the flow box to ensure that the group strings are qualified;

(4) Strengthen the data monitoring of daily equipment, find the group series current abnormal, quickly verify and eliminate hidden dangers of faults, and at the same time do a good job of data statistics and analysis;

(5) Verify the fuse current of the fuse and conduct multiple fuse product models for comparison experiments;

From this we can see that due to factors such as the geographical environment, construction process, fuse quality, and insurance base quality of different projects, the number and proportion of the fuse of the photovoltaic power station have different quantities and proportion. Therefore, the photovoltaic power station not only needs to strengthen daily supervision and inspection If you work, you must also find the fuse of the fuse in time and replace it. When we choose the fuse, we must also choose a fuse of good quality, good performance, safe and reliable, and a regular brand.

Galaxy Fuse also launched a series of photovoltaic fuses for the photovoltaic system, which can be used for photovoltaic devices such as flow boxes and inverters.

YRPV-160 1000VDC/1500VDC Gpv 40-160A &YRPV -400D1000VDC/1500VDC Gpv  125-400A

There are solar fuses for photovoltaic power generation equipment.

（YRPV-160 1500VDC Gpv 125A）                                                              （YRPV-400D 1500VDC Gpv 400A）

Common point:

1. Provide1000VDC,1500VDC photovoltaic system.

2.Meets IEC60269-6, UL248-19 standardd forglobalacceptance.

3. Low -power design.

4. NH squarepipe knife typeinstallation.

5. Can be used in the confluence box, inverter, photovoltaic array protection and other photovoltaic power generation equipment.

Difference:

1.YRPV-160 provides 40-160A Ampel current value

YRPV-400D provides 125-400A Ampel current value.

2.YRPV-160 is a standardized NH0 structure and YRPV-400D is a standardized NH2XLstructure.

3.YRPV-160 segmentation capacity can reach 20kA, YRPV-400D segmentation capacity can reach 50kA.

YRPV-160 1000VDC/1500VDC gPV 40-160A ：https://www.galaxyfuse.com/1500vdc-160a-nh0-solar-pv-fuse-link.html

YRPV -400D1000VDC/1500VDC gPV 125-400A：https://www.galaxyfuse.com/1500vdc-400a-nh2xl-solar-pv-fuse-link-with-striker.html

The opening of the Qatar World Cup can be said to be the largest photovoltaic and football field in history, the best publicity effect of the "dream linkage". Fans are happy, photovoltaic people are happy, the most happy and proud, I'm afraid, is China's tens of thousands of football fans in the photovoltaic industry. It's 17:00 on November 28, 2022, Beijing time, and tonight at 18:00 and 21:00, it's Cameroon and Serbia and South Korea and Ghana. In front of you on the screen, which country's team do you like? Let's wait and see!