Solar power generation system, extreme weather how should maintain?

Q1 led to the decrease of the efficiency of photovoltaic power generation systems and loss of the main factors that have?

a: efficiency of photovoltaic power generation systems affected by external damage, including shelter, ash layer, component attenuation, temperature influence, component matching and the MPPT accuracy, efficiency and efficiency of transformer, dc and ac inverter line loss, etc. , each factor's influence on the efficiency of different also, in the early stage of the project to pay attention to the optimization of system design, project operation process to take certain measures to reduce dust and keep out the impact on the system.

Q2 how to reduce the maintenance cost of photovoltaic power generation system?

a: advised to choose a good reputation on market photovoltaic products and good after-sales service. Qualified products can reduce the incidence of failure, the user should strictly abide by the system the use of the product manual, testing and cleaning of system maintenance on a regular basis.

how to deal with late Q3 system maintenance, how long to maintain? How to maintain?

a: according to the product suppliers to periodically check the instructions for the use of maintenance, system maintenance work is largely wipe components, larger areas generally do not need artificial rain to wipe, clean the rain season about 1 months at a time. Heavy large area can take into consideration the number that wipe snowfall big areas should remove the thick snow in time, avoid the influence power and the snow melted uneven shade, clear in time block component trees or sundries, etc.

Q4 thunderstorm weather need to disconnect the photovoltaic system?

a: distributed photovoltaic power generation systems are equipped with lightning protection devices, so you don't have to disconnect. For safety insurance, it is suggested that can choose disconnect junction box of the circuit breaker switch, cut off the circuit connection with photovoltaic modules, avoid lightning protection module can't remove harmful lightning. Operations staff to test the performance of the lightning protection module, timely to avoid the harm produced by lightning protection module failure.

Q5 need to clean up after a photovoltaic system? How to deal with after pv modules in the winter snow to melt ice?

a: snow back if there is a heavy snow accumulation on the component is need to clean, can use soft items will be pushed down snow, be careful not to scratch the glass. Component has a certain bearing, but can't step on the components above the cleaning, cause component cracked or damaged, affecting the service life of components. General advice don't wait to be too thick snow again clean, to avoid excessive ice components.

Q6 photovoltaic power generation systems can resist the harm of hail?

a: in the photovoltaic (pv) grid system components must be qualified by the maximum static load (positive The wind load and snow load) 5400 pa, the maximum static load on the back ( The wind load) Hail of 2400 pa and 25 mm in diameter hit at a speed of 23 m/s, etc. Strict testing. So the hail will not bring harm on photovoltaic power generation systems.

after installation if continuous rainy or fog Q7, photovoltaic power generation system will work?

a: photovoltaic cell components under certain weak light also can generate electricity, but due to the continuous rain fog or haze weather, the solar irradiance is low, the working voltage of photovoltaic system if not up to the start voltage of the inverter, the system will not work.

interconnection of distributed photovoltaic power generation systems and power distribution lines is the parallel running, when distributed photovoltaic power generation system can't meet the demand of load or because the cloudy day without work, the grid electricity will be automatically added to come over, there is no lack of electricity and power outages.

Q8 cold winter will not lack of power?

a: photovoltaic generating system is affected by temperature, directly influencing factors is irradiation intensity and sunshine duration and the working temperature of solar cell components. Winter unavoidably irradiation intensity is weak, and the sunshine time is short, general power generation is less in summer, this also is very normal phenomenon. But because of distributed photovoltaic system is combined with power grid, as long as there is electricity grid, family electric power shortage and the load will not happen.