Rapid simulation calculation method for optimal overmatching proportion of grid-connected photovoltaic project
A technology of analog calculation and ratio, which is applied in the field of rapid simulation calculation of the optimal over-proportion ratio of grid-connected photovoltaic projects. Fineness, time-saving effect
Active Publication Date: 2020-11-27
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology
Generally, it is through a large-scale calculation, the calculation result is not accurate enough, and different projects need to be calculated separately, the calculation amount is relatively large and cumbersome
How to calculate the optimal over-allocation ratio of the project more accurately and quickly, the industry has not given a better method
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[0024] The present invention is further described below. The following examples are only used to illustrate the implementation steps of the present invention, but not to limit the protection scope of the present invention.
[0025] Such as figure 1 As shown, a fast simulation calculation method for the optimal over-allocation ratio of photovoltaic projects includes the following steps:
[0026] (1) First draw up the basic plan according to the situation of the project, calculate the estimated budget of the basic plan, and distinguish the calculation results, divide them into fixed part P and variable part Q, and calculate the corresponding proportion The calculation formulas of P and Q are as follows:
[0027]
[0028]
[0029] In the formula: C is the fixed part of the power station investment, such as the construction cost of the booster station, the reason for entering the site, the initial cost, etc.; B is the variable part of the basic plan (generally no over-all...
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A rapid simulation calculation method for an optimal overmatching proportion of a grid-connected photovoltaic project comprises the following steps: (1) drawing up a basic scheme, calculating the rough calculation of the basic scheme, dividing the calculation into a fixed part P and a variable part Q, calculating a corresponding proportion, and (2) drawing up a comparison and selection scheme table; (3) making a PVsyst batch scheme calculation parameter table by using the proposed comparison and selection scheme; (4) importing the PVsyst batch scheme calculation parameter table into PVsyst, and calculating the generating capacity of each scheme by using a batch calculation function; (5) calculating the delta value of each scheme except the basic scheme in the comparison and selection schemes compared with the previous scheme; and (6) judging a scheme with an optimal overmatching ratio according to the delta value. According to the method, the actual kilowatt-hour cost of each scheme does not need to be calculated during calculation, only the value of delta needs to be calculated, the calculation mode is simple, result data generated through simulation can be conveniently and rapidly processed in batches, then calculation results can be rapidly obtained, and a large amount of time can be saved.
Description
technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a method for quickly simulating and calculating the optimal overprovision ratio of a grid-connected photovoltaic project. Background technique [0002] After 2010, my country's large-scale photovoltaic projects began to grow rapidly, and photovoltaic projects basically had relatively high policy subsidies. Due to the limitations of equipment prices and technical conditions, they did not pay much attention to the over-allocation ratio (DC capacity / AC capacity) of photovoltaic projects. ; In the past one or two years, the electricity price subsidy policy of photovoltaic power plants has also been continuously adjusted. On the other hand, due to the development of component technology and inverters, the system efficiency of photovoltaic power plants is also increasing. In general, the investment of photovoltaic power plants has been greatly reduced, the output o...
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IPC IPC(8): G06F17/10
CPCG06F17/10Y04S10/50
Inventor 邹海青郑涛平杨家胜曾杰何昌炎何志锋陈笙
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES