CN-121980811-A - Fixed-dip-angle type photovoltaic module arrangement parameter determination method and device

CN121980811ACN 121980811 ACN121980811 ACN 121980811ACN-121980811-A

Abstract

The invention provides a method and a device for determining arrangement parameters of a fixed-dip-angle photovoltaic module, wherein the method comprises the steps of obtaining influencing factors of the arrangement parameters of the fixed-dip-angle photovoltaic module in a photovoltaic field; the method comprises the steps of constructing an orthogonal experiment table according to influence factors and a plurality of values in a value range of the influence factors, obtaining photovoltaic field target geographic information corresponding to each experiment item in the orthogonal experiment table, obtaining time-by-time solar resource information and time-by-time electricity price resource information according to the photovoltaic field target geographic information, determining time-by-time electricity generation capacity of a photovoltaic field target according to the time-by-time solar resource information, determining photovoltaic field target benefits corresponding to each experiment item according to the time-by-time electricity price resource information and the target time-by-time electricity generation capacity, determining target values of the influence factors according to target benefits, and determining fixed inclination angle photovoltaic module arrangement parameters according to the target values. The invention can improve the efficiency and the benefit of the fixed inclination angle type photovoltaic module arrangement parameter determination and reduce the experimental quantity.

Inventors

HAN XIAOLIANG
CAI HONGJUN
ZHANG WENBO
MA DI
ZHANG PENGYU
YAN ZHIYONG
LI MINGDONG
HOU PENG
JI WEINING
XIAO RUI
ZHAO HAIFENG

Assignees

内蒙古电力勘测设计院有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. The method for determining the layout parameters of the fixed-dip-angle photovoltaic module is characterized by comprising the following steps of: obtaining influencing factors of arrangement parameters of a fixed-inclination photovoltaic module in a photovoltaic field; Constructing an orthogonal experiment table according to the influence factors and a plurality of values in the value range of the influence factors; acquiring photovoltaic field target geographic information corresponding to each experiment item in the orthogonal experiment table; According to the photovoltaic field target geographic information, time-by-time solar resource information and time-by-time electricity price resource information are obtained; determining the target time-by-time generating capacity of the photovoltaic field according to the time-by-time solar resource information; Determining the photovoltaic field target income corresponding to each experiment item according to the time-by-time electricity price resource information and the target time-by-time electricity generation amount; determining a target value of the influence factor according to the target benefit; And determining the arrangement parameters of the fixed-inclination-angle photovoltaic module according to the target value.
2. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 1, wherein obtaining the influencing factors of the layout parameters of the fixed-pitch photovoltaic module in the photovoltaic field comprises: The method comprises the steps of obtaining an installation inclination angle, an azimuth angle and a spacing ratio of arrangement parameters of fixed inclination angle type photovoltaic modules in a photovoltaic field, wherein the installation inclination angle is an included angle between a photovoltaic module and the horizontal ground, the azimuth angle is an included angle between a vertical plane of a photovoltaic module bracket and the right south direction, and the spacing ratio is a ratio of the spacing between adjacent photovoltaic module brackets to a preset standard spacing.
3. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 1, wherein constructing the orthogonal experiment table according to the influence factors and a plurality of values within the value range of the influence factors comprises: And selecting the values of the preset level numbers in the value range of the influence factors according to the influence factors, and constructing an orthogonal experiment table, wherein the values of the preset level numbers are uniformly divided in the value range.
4. The method for determining the layout parameters of the fixed-dip-angle photovoltaic module according to claim 1, wherein determining the target time-by-time power generation amount of the photovoltaic field according to the time-by-time solar resource information comprises: According to the time-by-time solar resource information, the dynamic influence of environmental factors on the generated energy is combined, and the target time-by-time generated energy of the photovoltaic field is determined, wherein the calculation formula of the target time-by-time generated energy is as follows: Wherein, the Represents the time-by-time power generation amount at the time t, Represents solar irradiance of the photovoltaic module surface, S represents the area of the single photovoltaic module, The conversion efficiency is represented by the number of bits, The temperature coefficient is represented by a temperature coefficient, The surface temperature is indicated as a function of the temperature of the surface, Represents the attenuation coefficient of the dust deposit, Representing the line transmission loss factor.
5. The fixed-pitch photovoltaic module placement parameter determination method according to claim 1, wherein determining a photovoltaic field target revenue corresponding to each experiment item according to the time-of-day electricity price resource information and the target time-of-day electricity generation amount comprises: According to the formula Obtaining the target yield of the photovoltaic field, wherein R represents the target yield, Represents the time-by-time power generation amount at the time t, The electricity price at the time t is indicated, The time interval is represented by a time interval, Representing initial investment costs, r representing annual funds recovery coefficients, Representing annual operating maintenance costs.
6. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 1, wherein determining the target value of the influencing factor according to the target profit comprises: performing visual analysis on the orthogonal experimental result to obtain a first intermediate result; performing interactive analysis on the first intermediate result to obtain a second intermediate result; performing variance analysis on the second intermediate result to obtain a third intermediate result; and optimizing the third intermediate result to obtain the target value of the influence factor.
7. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 6, wherein performing visual analysis on the orthogonal experimental result to obtain a first intermediate result comprises: Obtaining a benefit average value according to the orthogonal experiment result; Obtaining a first intermediate result according to the income average value; the calculation formula of the average value of the benefits is as follows: Wherein, the Represents the mean value of the benefit of the first level of the f-th factor, The f-th factor is expressed as the k-th experimental benefit when the first level is taken, and n is expressed as the number of repeated experiments per level for each factor.
8. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 6, wherein performing the interactive analysis on the first intermediate result to obtain a second intermediate result comprises: Constructing pairwise interaction pairs of influence factors according to the first intermediate result, and obtaining interaction effect values; And obtaining a second intermediate result according to the interaction effect value.
9. The method for determining the layout parameters of the fixed-pitch photovoltaic module according to claim 6, wherein performing an analysis of variance on the second intermediate result to obtain a third intermediate result comprises: obtaining a total square sum, a factor square sum and an error square sum according to the second intermediate result; Obtaining test statistics according to the total square sum, the factor square sum and the error square sum; And obtaining a third intermediate result according to the test statistic.
10. A fixed-pitch photovoltaic module placement parameter determination apparatus, comprising: the acquisition module is used for acquiring influencing factors of the arrangement parameters of the fixed-inclination photovoltaic module in the photovoltaic field; The processing module is used for constructing an orthogonal experiment table according to the influence factors and a plurality of values in the value range of the influence factors, acquiring photovoltaic field target geographic information corresponding to each experiment item in the orthogonal experiment table, acquiring time-by-time solar resource information and time-by-time electricity price resource information according to the photovoltaic field target geographic information, determining photovoltaic field target time-by-time generating capacity according to the time-by-time solar resource information, determining photovoltaic field target benefits corresponding to each experiment item according to the time-by-time electricity price resource information and the target time-by-time generating capacity, determining target values of the influence factors according to the target benefits, and determining fixed-inclination photovoltaic module arrangement parameters according to the target values.

Description

Fixed-dip-angle type photovoltaic module arrangement parameter determination method and device Technical Field The invention relates to the technical field of photovoltaic efficiency optimization, in particular to a method and a device for determining layout parameters of a fixed-inclination photovoltaic module. Background The optimal arrangement of the photovoltaic modules means that the arrangement of the photovoltaic modules is more reasonable through a specific optimization algorithm, so that the comprehensive benefit of the whole photovoltaic field is better. Photovoltaic modules refer to a minimal indivisible solar cell assembly with packaging and internal connections that can provide a direct current output alone. The photovoltaic bracket is a special device for supporting the photovoltaic module, and plays a role in optimizing the sunlight receiving efficiency of the photovoltaic module besides the physical supporting function. The optimal arrangement of the photovoltaic module is embodied as the optimal arrangement of the photovoltaic bracket in the photovoltaic field. In the design of a photovoltaic power generation system, the installation mode of the photovoltaic bracket directly influences the system to receive the total solar radiation, so that the power generation capacity of the photovoltaic power generation system is influenced. The installation mode of the photovoltaic bracket has three types of simple fixed inclination angle type, inclination angle adjusting type and automatic tracking type, and the most application in industry is the fixed inclination angle type, namely the photovoltaic module of the whole photovoltaic field adopts the same inclination angle. The ultimate goal of the optimal arrangement of the flat terrain fixed inclination type photovoltaic module is the maximization of income, and the main influencing factors are the shielding influence of the photovoltaic brackets and the matching degree of the generated energy time-by-time output and the time-by-time electricity price, and the influence is mainly caused by the relative position of the photovoltaic brackets and the state parameters of the photovoltaic bracket body. The existing fixed-dip-angle photovoltaic module arrangement parameter determination has the main defects that if the relative position of the photovoltaic bracket and the state parameter of the photovoltaic bracket body are realized through an enumeration method, a large amount of calculation is required, feasibility is not realized in engineering, and if only individual relative positions and the state parameter of the photovoltaic bracket body are selected empirically, the optimization of the sunlight receiving efficiency cannot be realized. Disclosure of Invention The invention aims to provide a method and a device for determining arrangement parameters of a fixed-dip-angle photovoltaic module. The efficiency and the income of the fixed inclination type photovoltaic module arrangement parameter determination can be improved, and the experimental quantity is reduced. In order to solve the technical problems, the technical scheme of the invention is as follows: a fixed-dip-angle photovoltaic module arrangement parameter determining method comprises the following steps: obtaining influencing factors of arrangement parameters of a fixed-inclination photovoltaic module in a photovoltaic field; Constructing an orthogonal experiment table according to the influence factors and a plurality of values in the value range of the influence factors; acquiring photovoltaic field target geographic information corresponding to each experiment item in the orthogonal experiment table; According to the photovoltaic field target geographic information, time-by-time solar resource information and time-by-time electricity price resource information are obtained; determining the target time-by-time generating capacity of the photovoltaic field according to the time-by-time solar resource information; Determining the photovoltaic field target income corresponding to each experiment item according to the time-by-time electricity price resource information and the target time-by-time electricity generation amount; determining a target value of the influence factor according to the target benefit; And determining the arrangement parameters of the fixed-inclination-angle photovoltaic module according to the target value. Optionally, obtaining an influencing factor of an arrangement parameter of the fixed-inclination photovoltaic module in the photovoltaic field includes: The method comprises the steps of obtaining an installation inclination angle, an azimuth angle and a spacing ratio of arrangement parameters of fixed inclination angle type photovoltaic modules in a photovoltaic field, wherein the installation inclination angle is an included angle between a photovoltaic module and the horizontal ground, the azimuth angle is an included angle between a vertical plane of a photovol