According to the latest news, at 14:00 pm on 9 April, a netizen photographed a building roof fire in Wenzhou Binhai Park, the scene of smoke rolling. From the netizen shooting video can see, a building roof fire, roof laying a large number of photovoltaic panels, the spread of the fire will be a lot of photovoltaic modules swept up in it.

From the shooter video can be clearly seen, a lot of photovoltaic equipment is burning, and because the roof is covered by a large number of photovoltaic modules, the fire also began to spread.

According to local netizens expressed, the scene of the fire produced smoke is quite huge, from a number of netizens to provide on-site pictures, several kilometres away can still be seen rolling smoke in the sky picture. It is understood that there have been a number of fire engines arrived at the scene of the fire, the cause of the fire as well as the specific situation is unknown, the specific circumstances and follow-up to the local authorities shall prevail.

Recently, some areas of the temperature began to rise, the wind is dry, it is very easy to cause a fire, and like some of the roof of a large number of photovoltaic modules, but also need to pay attention to the key areas of the fire.

PV fire prevention should not be underestimated in a climate of high fire risk!

At this time in the spring and summer, the PV power station fire prevention measures should not be underestimated. According to relevant statistics, more than 80% of fire accidents in PV power stations are caused by DC side failures, especially those caused by hot spots on modules, false connections on electrical lines and DC arcing problems. In addition, failure of fire prevention measures, module quality problems, electrical accidents, weather and natural disasters are also important causes of fire accidents in PV power plants. So how to do a good job of fire prevention in daily operation?

Rational Arrangement of Power Plant Modules

Whether it is modules or inverters, the distribution box should be ventilated to ensure air circulation. It is important not to arrange the PV plant modules in an unreasonable manner in order to generate more power, resulting in modules blocking each other and affecting heat dissipation and ventilation, leading to low power generation.

Reliable brands will be installed before your roof according to the situation, under the premise of maximising power generation to provide the most reasonable design, rather than allowing you to install a few more modules.

Photovoltaic agricultural greenhouse users are best in the roof of the front side of the row of photovoltaic modules, and in the back side of the blind light need to set up vents, so as not to affect the growth of crops under the premise of the PV module can maximise the assurance of the operating temperature of the appropriateness of the PV module.

Inverters and distribution boxes also need heat dissipation

Household inverters are generally IP65 protection level, with a certain degree of windproof, dustproof, waterproof level, but the inverter, distribution box work, itself to dissipate heat, so when installing the inverter, distribution box is best installed in the sun, sheltered from the rain.

If you install in the open air, you should make a simple awning for the inverter and distribution box to prevent direct sunlight. Avoid making the inverter and distribution box too hot, which will affect the power generation.

Ensure that the area around the PV modules, inverters and distribution boxes is open and free of debris.

Photovoltaic power station to remove the impact of high temperature, in addition to ventilation, but also pay attention to the external environment, to ensure that the surrounding no shade, if the power station for a long time by the lush weeds, vegetation surrounded, but also affect the flow of air, resulting in power generation is reduced, timely removal of weeds, vegetation is necessary.

Inverter, convergence box in the operation process will produce a certain amount of heat, long time in the dense weeds in the cover, then, will inhibit the equipment external heat dissipation, heat for a long time can not be dispersed, will lead to equipment overheating and cause failure.

Check that the cable connections are secure

The cable bears the heavy responsibility of transmitting energy, and its connection must be very secure, in the sun, wind, rain and other extreme weather, you need to check whether the cable is firmly connected, especially the DC PV junction, once loose, the light is to affect the power generation, or due to the connection is not tight, resulting in the heat of its burnt.