Economic evaluation method of a power system

An economic evaluation and power system technology, applied in the field of power system economic evaluation, can solve the problems of inaccurate evaluation results and ignoring the time value of money

Inactive Publication Date: 2019-02-22
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cost of transmission network planning mainly includes line investment costs and operation and maintenance costs. In the existing evaluation methods, when evaluating the economic benefits of project investment, the time value of funds is not considered, and the evaluation results are not accurate.

Method used

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  • Economic evaluation method of a power system
  • Economic evaluation method of a power system
  • Economic evaluation method of a power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the application provides a power system economic evaluation method, the method includes:

[0030] S1, respectively obtain the construction investment cost, annual operating cost and network loss rate as static evaluation indicators.

[0031] The construction investment cost mentioned refers to the investment cost required for new power transmission and transformation equipment under the plan to be evaluated.

[0032] The annual operation cost mentioned refers to the annual operation and maintenance cost under the plan to be evaluated.

[0033] The network loss rate: refers to the power loss and consumption during the power transmission process. Since the network loss will cause additional operating costs, the network loss rate is also an important indicator for evaluating the economics of the power grid planning scheme. The calculation expression is:

[0034] S2, respectively calculate the equivalent annual value investment cost, internal...

Embodiment 2

[0048] On the basis of Example 1, in addition to evaluating the funding situation of the project investment, there are a series of other indicators used to measure the economics of the power grid planning scheme, such as figure 2 As shown, the method also includes:

[0049] S4: Calculate the investment efficiency of the power system as an additional score to obtain the total score of the power system economic evaluation.

[0050] The specific implementation process of the step S4 is: respectively calculate the unit investment increase sales power and unit investment increase supply load, when the unit investment increase sales volume or unit investment increase supply load meets the annual expected planned value of the power system, for the units that meet the requirements 5 additional points are calculated for investment in increased electricity sales or unit investment in increased supply load. The sum of all additional points is the additional score for the investment effi...

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Abstract

The invention provides an economic evaluation method of a power system. The method comprises the following steps: S1, obtaining construction investment cost, annual operation cost and network loss rate as static evaluation indexes respectively; S2, calculating the equal annual investment cost, the internal rate of return and the dynamic investment payback period as the dynamic evaluation indexes;S3, assigning weights to all the indexes in the steps S1 and S2, and calculating an economic evaluation score of the power system. This method takes into account both the economic benefit and the timevalue of the funds through the comprehensive analysis method.

Description

technical field [0001] The invention mainly relates to related fields such as power system operation analysis and reliability evaluation, and specifically relates to a power system economic evaluation method. Background technique [0002] Economic evaluation is an important part of grid planning evaluation. Excessive investment in power grid planning will inevitably lead to waste of resources. However, if the investment is insufficient, it will lead to a "network bottleneck" in the power system, and the optimal allocation of resources cannot be achieved. Therefore, for the power grid planning scheme to be selected, it is necessary to analyze whether the scheme is economically reasonable. [0003] The cost of transmission network planning mainly includes line investment costs and operation and maintenance costs. In the existing evaluation methods, when evaluating the economic benefits of project investment, the time value of funds is not considered, and the evaluation resul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 田鑫李雪亮吴健李琨曾军赵龙王艳郑志杰张杰牟宏汪湲高效海张丽娜张玉跃付一木魏鑫袁振华
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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