The price of solar cell shadow effect on pv systems have how old? The highest output fell by 90%.

Polaris solar photovoltaic webex: photovoltaic knows, the two killers of components: shade and hot spots. With keep out form the shadow, lead to a falling output. （ Source: WeChat public 'photovoltaic box, three electrical') So, the shadow keep out the impact on the electricity how much? He brought together and see it today! Case a customer installation of 5 kw photovoltaic power station in shandong province, southwest solar water heater, afternoon 13:00 - 16:00, in front of the photovoltaic phalanx was water heater shadows shade, a total of keep out 7 pieces of photovoltaic modules, the measured power loss capacity by about 30%. External things keep out hebei a customer installed 20 mw photovoltaic power station, the back cover the lower part is all day in front of the components, components measured the back component loss capacity by about 90%. Own keep out due to a component in the cell is in series, each road also series dc components of several components, so keep out a piece of component, even blocked a component of a cell, will power output of the whole set of strings have a big impact. Namely capacity will reduce your pv system, ultimately affect your benefits. Harm of the shade is very surprised, has not been attaches great importance to the small area of the shade, unexpectedly can bring so much influence. Shadows shade for the influence of the system output this problem no longer fresh. According to measure, pv systems and the shade of a little wire that exist in the shadow, about 20 - can lead to low power plant capacity 30%! Photovoltaic system under certain conditions, some of the battery will be in the shadow of the other objects around, cause local shadow, this will cause some battery heating, produce the so-called 'hot spot' phenomenon. If the shadow effect without eliminating exist for a long time, when the hot spot effect to a certain extent, the solder melts and destroying grid lines on the components, which can lead to the abandonment of the solar battery components. Obviously, keep out the serious influence to the junction box and the service life of the panels, solar portal, seriously affect the output at the same time, reduce the benefits of owner. Keep out the source, then, is the most easy to occur in the photovoltaic power station daily which keep out source? To learn together! One, wire, fence range although fixed so several photovoltaic power plant construction, but the power plant environment is variety, even very professional system design company, also, the wire plant fence invisible barrier between the neglect. Second, fixed the buildings here has two kinds: building a existed before, in the construction of power station building block; Second, build buildings keep out the day after tomorrow. Three, photovoltaic power station near the plant, photovoltaic power station built no plants nearby, but then, President of a new plant, China solar energy network, these plants for power plant have the effect of shade. Four dust, bird droppings, and photovoltaic modules chang on the roof and floor, and for photovoltaic power station in the outdoor, dust is easy, when the component is covered a layer of dust, don't look down upon the dust, for photovoltaic modules power influence is very big, and photovoltaic modules will also be a place for birds 'play', bird droppings, scattered bird feathers have become a photovoltaic modules above. Five, the photovoltaic modules of 'reuse' someone online before drying out a user on photovoltaic modules dry chili, dried sweet potato, become the hot topic, solar power network, the 'funny' while convenient for common people's life, but to the photovoltaic power station has brought serious harm. Solve the problem of shade, raise revenue? Understand the barrier factors, see the loss caused by the cover, so we should how to avoid the shelter? 1, build power station to do a good job of investigation of photovoltaic power station in front of the building before, solar portal, be sure to do a good job in the early stage of the exploration to determine the high tension line, railings, vegetation, existing buildings ( Planning of the building also expected earlier) Will there be a shade, want to find a way to eliminate barriers, change the installation location. To give full consideration to the growth of plants in survey and install annual, solar energypower grid, consider whether the shade, branches shade, shade can be cut off. And terrain differences should consider components between the north and the south, it cause shadows shade; With different row phalanx submatrix highly cause shade; At the same time, the shadow of interfloor to consider. 2, well after the late clean power station built, plant often clean the habit to develop. Photovoltaic power station in the outdoor, without wind and rain the sun, if not clean a few days, you will find that the plant surface will appear a thick layer of ash, to plant power generation is high, so the dust is absolutely unacceptable. Regular operations, regular cleaning dust, bird droppings, deciduous shade, maintain the cleanness of photovoltaic modules panel above. 3, some people always want to avoid man-made sunscreen, what can do for power plant, such as mount enclosure, in order to keep the birds set QuNiao rod, this is good, positive, have the adverse effect of the gild the lily, photovoltaic operations and the lack of knowledge, the photovoltaic modules air basks in clothings, vegetables, such as mistake, these behaviors will bring plant shade in invisible. Photovoltaic power station built easily, but keep out problem cannot small gaze, can achieve expected returns to photovoltaic power station, the shade problem before, only in this way users photovoltaic power station is the 'vase', in the home really become the user's 'cash cow'. The original title: shadow effect on pv systems have how old? The highest output fell by 90%.

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