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Post evaluation method for power grid project based on multilevel extension assessment method

A post-evaluation and project technology, applied in the post-evaluation field of power grid projects based on the multi-level extension evaluation method, can solve the problems of unreasonable weight determination, incomplete index system, and large influence of human subjective factors, etc., and achieve the goal of index weight. Determine the reasonableness, reduce the impact, and evaluate the scientific effect of the result

Inactive Publication Date: 2017-10-20
国网江西省电力有限公司赣州供电分公司 +1
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  • Claims
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Problems solved by technology

At present, the fuzzy comprehensive evaluation method is usually used to study the post-evaluation of the economic benefits of power grid investment and construction projects, but this method is greatly affected by human subjective factors
Some also use fuzzy interval analytic hierarchy process to study power grid investment and construction projects, and weaken the influence of human subjective factors on the evaluation results by introducing interval numbers. Spend
To sum up, there are still some deficiencies in the post-evaluation research of power grid investment and construction projects, mainly reflected in the incomplete index system, unreasonable weight determination and imperfect selection of evaluation methods.

Method used

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  • Post evaluation method for power grid project based on multilevel extension assessment method
  • Post evaluation method for power grid project based on multilevel extension assessment method
  • Post evaluation method for power grid project based on multilevel extension assessment method

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Embodiment 1

[0046] see figure 1 , the present invention provides a technical solution: a post-evaluation method for a power grid project based on a multi-level extension evaluation method, comprising the following steps:

[0047] S1: Establish an evaluation index system;

[0048] S2: Use the improved AHP combined with the entropy weight method to determine the weight of the evaluation index; the traditional AHP scales the importance of 1 / 9, 1 / 7, 1 / 5, 1 respectively / 3, 1 / 1, 3 / 1, 5 / 1, 7 / 1, 9 / 1; the improved AHP of the present invention uses a scale of 0.1-0.9 to construct a judgment matrix, and the final weight size obtained is closer to Actual; the meaning of its scale is shown in Table 1:

[0049] Table 1 The meaning of the scale of the improved AHP

[0050]

[0051] The final weight v of index i in a certain classi (i=1,2,·····,n) is calculated as

[0052]

[0053] In the formula: α i ——The weight of index i in a certain category calculated by the improved AHP

[0054] beta ...

Embodiment 2

[0077] The invention provides a specific example to illustrate: take a 220kV substation construction project as an example to verify the scientificity and rationality of the established multi-level extension evaluation model; Reduced operation and management costs (unattended); since it was completed and put into operation on October 26, 2011, it has been running well without any major accidents; according to the relevant information provided by its operation mode section and equipment department, the substation construction project The actual data of the post-evaluation indicators of functional effects are shown in Table 4.

[0078] According to the scoring rules of China Southern Power Grid Co., Ltd. on the post-evaluation grade division of the project, this paper divides the post-evaluation of the substation construction project into four grades: poor, general, good and good, corresponding to U=(U 1 ,U 2 ,U 3 ,U 4 ), the specific score division of each grade interval is ...

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Abstract

The invention discloses a post-evaluation method for a power grid project based on a multi-level extension evaluation method, including S1 establishing an evaluation index system, S2 using an improved analytic hierarchy process and an entropy weight method to combine subjectively and objectively to determine the weight of the evaluation index, and S3 establishing Multi-level extension evaluation model; on the basis of clarifying the types of projects to be evaluated, the evaluation index system is optimized and adjusted so that it can comprehensively reflect the functional effects of substation construction projects; the combination of subjective and objective AHP and entropy weight method is introduced The calculation weight of the algorithm makes the determination of the index weight more reasonable; the multi-level extension evaluation method is used to study the post-evaluation of the function effect of the substation construction project. This method not only does not need to judge each index according to the expert experience. It can also find out the key factors that affect the quality of the evaluation results and the overall development trend of the project, reducing the influence of human subjective factors on the evaluation results, and making the evaluation results more scientific and reasonable.

Description

technical field [0001] The invention relates to the technical field of post-project evaluation, in particular to a post-evaluation method for power grid projects based on a multi-level extension evaluation method. Background technique [0002] In recent years, with the continuous acceleration of my country's electric power development, the power grid has also developed rapidly, and its construction potential is great. Post-evaluation is an important part of the power grid construction project. The quality of its work has a major impact on the project, future new projects and even the development of the entire power grid industry. Therefore, only by implementing the post-evaluation work of power grid construction projects in place and truly playing the role of post-evaluation can we provide strong empirical support for my country's power grid construction. [0003] At present, the research on post-evaluation of power grid investment and construction projects has achieved cer...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06375G06Q50/06
Inventor 谢晓帆万卫黄吉明刘秋林李斌郭泉辉肖媛何小波罗有国廖雪松方志贺永峰邵晨辉陈巍王磊
Owner 国网江西省电力有限公司赣州供电分公司
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