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Project investment calculation method based on typical power supply mode

A technology of power supply mode and calculation method, applied in the direction of calculation, resources, instruments, etc., can solve the problem of unsustainable large-scale high-level investment, and achieve the effect of avoiding excessive investment

Inactive Publication Date: 2016-09-28
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0002] At present, with the rapid development of the national economy, the electricity load in various places continues to grow, and comprehensive commercial and commercial areas, high-density residential areas, and economic development areas with different functions emerge one after another, and users at all levels have more diversified demands on power supply reliability. Under the situation of double growth of electricity demand and reliability demand, distribution network planning and reconstruction work project investment is facing enormous pressure, and long-term large-scale high-level investment will be unsustainable

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  • Project investment calculation method based on typical power supply mode
  • Project investment calculation method based on typical power supply mode
  • Project investment calculation method based on typical power supply mode

Examples

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Embodiment

[0050] Embodiment, the application example of Yangzhou City Power Grid, Jiangsu Province;

[0051] (1) There are four types of power supply areas in Yangzhou: A, B, C, and D. The current annual load density of the four types of power supply areas is 7.6000MW / km 2 、2.6403MW / km 2 、0.5098MW / km 2 、0.2388MW / km 2 In 2020, the load densities of the four types in the supply area will be 9.0000MW / km respectively 2 、3.1267MW / km 2 、0.6037MW / km 2 、0.2827MW / km 2 ;

[0052] (2) According to the voltage level sequence of substations in Yangzhou supply area, the number of main transformer configurations, capacity, and outgoing medium-voltage lines, etc., the power supply mode of Yangzhou supply area is selected as A, B, and A-3, B-3 and B-2 Mainly, C and D categories are mainly C-1, C-2, D-2, D-5, a total of seven typical power supply modes;

[0053] (3) According to the project investment model of the above-mentioned typical power supply modes, judge the most economical power supply ...

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Abstract

The invention relates to a project investment calculation method based on a typical power supply mode, comprising the following steps: (1) building a typical power supply mode scheme library; (2) building a typical power supply mode project investment model; (3) setting the boundary condition parameters of the typical power supply mode project investment model; (4) selecting an only typical power supply mode; and (5) carrying out calculation based on the typical power supply mode project investment model, calculating the investment Ca in a new project of a distribution network under the typical power supply mode if a power supply region is a new region, and if a power supply region is a reconstructed region, comparing the power supply reliability RS11 of the power supply region in the status quo year with the power supply reliability RS12 formulated in the planning goal of a typical power supply region in the planning year, and then, calculating the distribution network reconstruction investment Ca under the typical power supply mode. The method is conductive to the standardization, quantitative evaluation and normalization of power grid construction in each power supply region.

Description

technical field [0001] The invention relates to a project investment calculation method, in particular to a project investment calculation method based on a typical power supply mode used in the field of power grids. Background technique [0002] At present, with the rapid development of the national economy, the electricity load in various places continues to grow, and comprehensive commercial and commercial areas, high-density residential areas, and economic development areas with different functions emerge one after another, and users at all levels have more diversified demands on power supply reliability. Under the situation of double growth of electricity demand and reliability demand, distribution network planning and transformation work project investment is facing enormous pressure, and long-term large-scale high-level investment will be unsustainable. The typical power supply mode involves load density, voltage level, grid structure, reliability and economy, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q10/0637G06Q50/06
Inventor 杨卫红刘速飞王旭阳吴志力张鹏飞吴争马倩黄河姚刚金佳侯佳胡滨王云飞刘艳茹姜世公赵健
Owner STATE GRID CORP OF CHINA
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