Method and system of determining access to power grid of million kilowatt beach PV station comprehensively

A technology for photovoltaic power plants and grid access, applied in data processing applications, instruments, calculations, etc., can solve the problem of not considering the impact of the scheme

Inactive Publication Date: 2018-10-30
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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Problems solved by technology

[0004] The selection of traditional photovoltaic access schemes often relies on expert experience and simple comparison of several alternative schemes to obtain the optimal scheme, but does not consider the influence of various factors on the scheme

Method used

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  • Method and system of determining access to power grid of million kilowatt beach PV station comprehensively
  • Method and system of determining access to power grid of million kilowatt beach PV station comprehensively
  • Method and system of determining access to power grid of million kilowatt beach PV station comprehensively

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Embodiment Construction

[0069] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0070] The invention discloses a comprehensive decision-making method for connecting a million-kilowatt tidal flat photovoltaic power station to a power grid, such as figure 1 As shown, the specific steps include:

[0071] (1) According to the existing design specifications and engineering experience, design several mega-kilowatt tidal flat photovoltaic access system schemes.

[0072] (2) Build a photovoltaic access system model, calculate the node voltage qualification rate, the number of overloaded lines and the N-1 pass rate and other indicators to conduct preliminary screening of the scheme, eliminate obviously unqualified schemes, and determine the set of alternative schemes.

[0073] (3) Considering the impact of grid-connected photovoltaic power plants in tidal flats with megawatts, establish an evaluation system for grid-connected sche...

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Abstract

The invention discloses a method and a system of determining access to a power grid of a million kilowatt beach PV station comprehensively. The method comprises the steps of designing a plurality of solutions of million kilowatt beach PV access systems; screening primarily and abandoning obviously substandard solutions, and determining a candidate solution set; building a million kilowatt beach PVstation grid connection solution evaluation system; calculating through simulation software to obtain an index value of each solution; resolving by using an improved fuzzy analytic hierarchical process to obtain a weight of each factor; ranking the solutions by using a TOPSIS method, and determining relative proximity of each solution and a positive ideal solution; and selecting the solution withhighest relative proximity as an optimal solution. The invention provides a method of determining a million kilowatt beach PV station grid connection solution. The method does not depend on experience in selection of the PV access solution, thereby helping make selection of the million kilowatt beach PV grid connection solution more scientific, comprehensive and quantitative.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a comprehensive decision-making method and system for connecting a million-kilowatt tidal flat photovoltaic power station to a power grid. Background technique [0002] With the aggravation of energy shortage and environmental pollution, photovoltaic power generation has become popular all over the world. According to statistics, the installed capacity of photovoltaics in the world was 50GW in 2010. In 2016, the new installed capacity in the whole world was 70GW, and the total capacity has reached 305GW. Among them, my country's new photovoltaic installed capacity and cumulative installed capacity reached 34.54GW and 77.42GW respectively, ranking first in the world. In 2017, my country's new photovoltaic installed capacity and cumulative installed capacity reached 52.83GW and 130.25GW respectively. The proportion of photovoltaic power generatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0637G06Q10/0639G06Q50/06
Inventor 魏佳丛旖旎李雪亮刘玉田刘晓明赵龙王艳魏鑫王轶群郑志杰张丽娜张杰曹相阳薄其滨牟颖刘冬张家宁
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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