Photovoltaic power generation is supported by national policies. Whether it is urban or rural areas, there has been a mounting upsurge in the arrival of the 630. On the other hand, photovoltaic power generation has the unmatched advantages of other traditional energy sources.
No one is perfect, let alone a mechanical industrial product. In the aspect of maintenance, we should remind people who are engaged in photovoltaic power generation service to go to the project site to handle the fault and pay attention to safety. So, today, Longtuo II gives us universal access.
The most important part of the maintenance of photovoltaic power generation after grid-connected - the inverter need to pay attention to what.
Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to convert light energy directly into electrical energy. The key element of this technology is solar cells. After the solar cells are connected in series and protected by a package, a large-area solar cell module can be formed, and a photovoltaic power generation device can be formed by combining components such as an inverter. Photovoltaic power generation has the advantage of being less subject to geographic restrictions because it is sunny; the photovoltaic system also has the advantages of being safe, reliable, noise-free, low-pollution, energy-efficient, and without the need to consume fuel and erection of transmission lines to generate electricity on-site and for short construction periods.
As an electronic product, a photovoltaic inverter consists of many components. Inverters, also known as power regulators, can be classified into two types, stand-alone power supplies and grid-connected power supplies, depending on the use of the inverter in photovoltaic power generation systems. According to the waveform modulation method, it can be divided into a square wave inverter, a staircase wave inverter, a sine wave inverter, and a combined three-phase inverter. For inverters used in grid-connected systems, transformers can be divided into transformer-type inverters and transformer-less inverters according to whether or not there are transformers. When connected to the grid and connected to the power grid, we must pay attention to it. Because of its particularity, we must not be careless in the installation and maintenance. Otherwise, we may have such hidden dangers. So how do we pay attention? Here we start with the maintenance aspect.
After the photovoltaic power generation system is installed and connected to the grid, it is inevitable that there will be no problems. After problems occur, inspections and maintenance will be carried out.
Maintenance is the need to pay attention to the following points:
1. Before performing any maintenance work, first disconnect the inverter from the electrical grid, and then disconnect the DC-side electrical connections.
2. Wait at least 5 minutes until the internal components have been discharged to perform maintenance work.
3. Any fault affecting the safety performance of the inverter must be immediately ruled out before the inverter can be turned on again.
4, to avoid unnecessary circuit board contact
5. Observe the static protection regulations and wear an anti-static wristband.
6. Observe and follow the warning signs on the product.
7. Visually inspect the equipment for damage or other dangerous conditions before operation.
8. Pay attention to the thermal surface of the inverter. Power semiconductor heat sinks, for example, maintain a relatively high temperature for a period of time after the inverter is powered off.
Finally, after the machine has been repaired, make sure that any fault affecting the safety performance of the inverter is resolved before the inverter can be turned on again.
Understand the maintenance specifications of photovoltaic grid-connected inverters and pay attention to them during routine maintenance and repair so as to avoid hidden dangers.
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