With the photovoltaic power plant into people's field of vision, we are increasingly concerned about the degree of photovoltaic power plants, netizens recently asked Xiaobian how to match the photovoltaic inverter and components. Today we come to talk about this topic.
PV inverter and components to match the better, here involves a jargon 'tolerance ratio', the general understanding is that the inverter connected to the PV modules and inverter rated power capacity ratio. Early in the PV system design process, people mistakenly believe that the components, inverter design in accordance with the ratio of 1: 1, so there will be no error, but also the best ratio.In fact, such a point of view, for now There are some errors.
Applied research found that the average system cost of electricity as the lowest standard system of measurement, under a variety of lighting conditions, components, such as tilt angle, to achieve optimal system of the ratio is greater than 1: 1. That is Said that to some extent to enhance the capacity of PV modules, help to enhance the overall economic efficiency of the system, which is what we call the component over-allocated.
So how to achieve the best ratio?
Here we can make such a design, if the initial design capacity of the power plant A (MW), through the calculation of the expansion of the power plant panels to B (MW), the global investment cost of the plant is optimal, when the plant's best Capacity ratio is: K = B / A.
When the inverter exceeds 100%, 105% and 110% of the nominal power, the optimal capacity ratio is 1.05, 1.1 and 1.15 respectively.
The optimal capacity ratio is defined, which should be paid attention to in the design of PV power station.In addition, the optimum capacity allocation ratio of PV power plants is also affected by internal and external factors such as solar light resources, power station efficiency, inverter power generation capacity, Power station unit price and photovoltaic module price.
Find out the best ratio of power station, power generation installed in the home will certainly be considerable.
