Solar photovoltaic power station troubleshooting methods are there?

Friends all know that in the theory of photovoltaic power station running time is 25 years, but like people, as long as eat grain will always get sick, no matter how high quality pv accessories and professional design and installation, time grows, photovoltaic power station will also appear such that

friends all know theory of household photovoltaic power station running time is 25 years, but like people, as long as you eat grain, you're always sick. As time goes on, with high quality photovoltaic accessories and professional design and installation, photovoltaic power station will appear this or that problem. As the owner of the photovoltaic power station, some troubleshooting skills are very important. Today, the side xiao introduced to his friend several simple troubleshooting methods. If you find your household photovoltaic system doesn't work, you should have the spirit of 'keep cool when things go wrong. Remember, photovoltaic power station does not work, there are two main reasons: one is the part of the equipment failure; The possibility of grid is a problem. 1. Through the daily power check and monitoring software of the system, can clearly see that the system is not working or low performance. The process should be performed in sunny day, so that you can test the output of the pv modules, and complete investigation under the enough sunshine time. 2. Need to check that the DC main circuit breaker, isolating device and the array ac main circuit breaker not disconnect. If all of the circuit breaker and isolating device is closed, should make visual inspection for the inverter. 3. Frequency converter fault is very common in the system, after all, it is made up of many parts, frequency converter fault information often in the form of false information, the mainstream of the inverter in the market now can have fault feedback function, when the failure frequency converter alarm lamp will light up. Of course, most of the time inverter alarm is not its own problems, it may be network problems, it may be parts problem. If the inverter itself fails, the junior partner can only make a phone call to the agents or contact the manufacturer directly to solve the problem. If the inverter is no problem, the problem is likely to occur on the photovoltaic array. 4. Of the main causes of component failure is: cable disconnected or the plug failure; Pv junction box internal loose connection; Photovoltaic module is broken. Actual fault by physical examination of the cables and components and current and voltage measurements to find. Troubleshooting for photovoltaic array, small partners need to meet the following basic knowledge: 1. Open circuit voltage and short circuit current measurement only in pv module did not load. 2. Even when the solar irradiance is very low, the output voltage of pv module was close to the open circuit voltage, and short circuit current proportional to the effective solar irradiance. 3. According to the situation of blocking, blocked pv module output current or reduce the current. In fact, there are a lot of knowledge about photovoltaic system troubleshooting, far more than these. After the completion of residential photovoltaic power station, the junior partner should form good habits of operation and maintenance, regular inspection on power plant, to accumulate some simple troubleshooting methods, so that when you meet the problems related to able to deal with. However, it is important to remember that if you can't solve the problem, you must contact the agent or manufacturer, and professional service personnel to solve. After all, 'professional affairs handed over to a professional'