Photovoltaic installed capacity and inverter capacity configuration method
A technology of installed capacity and capacity allocation, applied in the direction of photovoltaic power generation, single-grid parallel feeding arrangement, etc., can solve the problems of waste of photovoltaic power station resources, not taking into account the difference of light resources, and reducing the investment rate of return of photovoltaic power stations, etc. The effect of power running time, improving internal rate of return, and reducing cost per kWh
Inactive Publication Date: 2016-02-17
北京科诺伟业科技股份有限公司
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[0003] The purpose of the present invention is to aim at the capacity matching ratio existing in the current photovoltaic power station project, which is designed according to the empirical value of 1:1, without taking into account the differences in light resources in different regions, so that there are different degrees of resource waste and photovoltaic power station investment income in photovoltaic power stations. In order to solve the problem of low efficiency and other problems, a method for configuring photovoltaic installed capacity and inverter capacity is proposed
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0021] While improving the capacity ratio of photovoltaic power plants, it will undoubtedly lead to when the sunlight resources are particularly good, the output power of photovoltaic modules to the inverter is greater than the capacity of the inverter. At this time, it is necessary to track and control the maximum power point of the inverter and discard part Photovoltaic power generation. When the capacity ratio of photovoltaic power plants starts to increase from 1:1, the cost per unit of electricity will gradually decrease, but with the further increase of the ratio of photovoltaic capacity, at this time, the cost of photovoltaic power per unit of electricity will increase due to the substantial increase in the light rejection rate , so the present invention needs to find the optimal capacity ratio of the photovoltaic power station that can ...
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The invention discloses a photovoltaic installed capacity and inverter capacity configuration method. The photovoltaic installed capacity and inverter capacity configuration method determines an optimal capacity proportion of a photovoltaic power plant according to input conditions such as local climatic conditions, illumination resource conditions, photovoltaic installation inclined angle and system efficiency, regards the purpose of looking for the lowest cost per kilowatt hour of the photovoltaic power plant as the optimization goal, increases the capacity proportion of the photovoltaic power plant gradually, calculates the cost per kilowatt hour of the photovoltaic power plant in the capacity proportion, and looks for the minimal value of the cost per kilowatt hour, wherein the capacity proportion corresponding to the minimal value of the cost per kilowatt hour of the photovoltaic power plant is the optimal capacity proportion of the photovoltaic power plant.
Description
technical field [0001] The invention relates to a method for configuring photovoltaic installed capacity and inverter capacity of a photovoltaic power generation system. Background technique [0002] With the development of photovoltaic power generation, the photovoltaic installed capacity in Class I resource areas with good illumination resources has approached saturation, so now photovoltaic power generation has developed to Class II illumination resource areas or even Class III illumination resource areas. The ratio of PV installed capacity to inverter capacity (PVpowertoinverterpowerratio, referred to as the capacity ratio) of photovoltaic power station projects currently in operation or under construction is generally 1:1, this is because before photovoltaic power stations are generally built in Class I with good light resources In the resource area, solar energy resources are very good, and the capacity ratio is configured according to 1:1, which can satisfy the invert...
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CPCY02E10/56
Inventor 樊晓磊付勋波许洪华
Owner 北京科诺伟业科技股份有限公司