热门关键词: 光伏太阳能板天窗 防水光伏太阳能电池板 U玻璃光伏太阳能电池板
最后,机器维修完毕后,要确保任何影响逆变器安全性能的故障已将解决,才能再次开启逆变器。明白了光伏并网逆变器的维修规范,在日常维护维修过程中加以注意,这样才能避免隐患的发生。
Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. The key component of this technology is the solar cell. After the solar cells are
connected in series, they can be packaged and protected to form a large area of solar cell modules, and then combined with inverter, power controller and other components to form a photovoltaic power generation device.
The advantage
of photovoltaic power generation is that it is less restricted by region. Because the sun shines on the earth, the photovoltaic system also has the advantages of safety, reliability, no noise, low pollution, local power generation and power supply without
fuel consumption and power transmission lines, and short construction period.
As an electronic product, photovoltaic inverter is composed of multiple devices. Inverter, also known as power regulator, can be divided into independent
power supply and grid connection according to the use of inverter in photovoltaic power generation system. According to the waveform modulation mode, it can be divided into square wave inverter, step wave inverter, sine wave inverter and combined three-phase
inverter.
The inverter used in grid connected system can be divided into transformer type inverter and non transformer type inverter according to whether there is transformer or not. When the grid connected power generation is to
be connected to the power grid, we should pay attention to it. Because of its particularity, we must not be careless in installation and maintenance, otherwise there may be hidden dangers. So how do we pay attention? Here we will start from the aspect
of maintenance.
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, it is necessary to carry out inspection and maintenance.
The precautions for photovoltaic inverter maintenance are as follows:
1. Before any maintenance work, the electrical connection between the inverter and the power grid shall be disconnected first, and then the DC side electrical
connection shall be disconnected.
2. Wait for at least 5 minutes until the internal components are discharged.
3. Any fault affecting the safety performance of the inverter must be eliminated immediately before
starting the inverter again.
4. Avoid unnecessary board contact
5. Observe the static electricity protection specifications and wear anti-static bracelets.
6. Pay attention to and observe
the warning signs on the product.
7. Conduct preliminary visual inspection for damage or other dangerous conditions before operation.
8. Pay attention to the inverter hot surface. For example, the heat sink
of the power semiconductor still maintains a high temperature for a period of time after the inverter is powered off.
Finally, after the machine is repaired, ensure that any fault affecting the safety performance of the inverter
has been solved, and then start the inverter again. Understand the maintenance specifications of photovoltaic grid connected inverter and pay attention to them in the process of daily maintenance, so as to avoid hidden dangers.
报错 笔记