Improved interval fuzzy evaluation-based power distribution network investment effect evaluation method

Inactive Publication Date: 2018-03-23
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem existing in the prior art that it cannot be applied to comprehensive evaluation including fuzzy judgment factors, and to provide a distribution network investment effectiveness evaluation method based on improved interval fuzzy evaluation that can effectively solve the problem of judgment fuzziness

Method used

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  • Improved interval fuzzy evaluation-based power distribution network investment effect evaluation method
  • Improved interval fuzzy evaluation-based power distribution network investment effect evaluation method
  • Improved interval fuzzy evaluation-based power distribution network investment effect evaluation method

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Embodiment 1

[0115] see figure 1 , a distribution network investment effectiveness evaluation method based on improved interval fuzzy evaluation. The evaluation object is the operation data of 14 cities in a province. The data used in the test is based on the survey data of the distribution network status of the State Grid Corporation of China and the year-end summary statistics , statistical and calculation software is MATLAB, the specific steps are as follows:

[0116] Step 1. Establish distribution network investment effectiveness evaluation index system according to city characteristics and load characteristics, wherein the index system includes power supply quality index, power grid structure index, equipment level index, power supply capacity index, intelligence level index and power grid efficiency index , the power supply quality indicators include power supply reliability rate, comprehensive voltage qualification rate, and the proportion of "low voltage" users, and the power grid ...

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Abstract

A distribution network investment effect evaluation method based on improved interval fuzzy evaluation. This method first establishes the distribution network investment effect evaluation index system, and then uses the membership function in fuzzy mathematics to perform dimensionless processing on each index in the index system, and then The weighted interval algorithm is used to calculate the weight of each index, and finally the multiplication and addition operator is used to calculate the comprehensive score of the power grid. This design not only has good practical application effectiveness and accuracy, but also can provide guiding opinions for the later distribution network investment sub-project decision-making and sub-regional decision-making.

Description

technical field [0001] The invention belongs to the field of distribution network automation, and in particular relates to a distribution network investment effect evaluation method based on improved interval fuzzy evaluation. Background technique [0002] In recent years, with the continuous deepening of power system reform, the pressure of global warming, smog and other environmental problems has been increasing, and the problems in power grid operation and planning have become more prominent. One of the important issues in power grid management and decision-making is to balance the contradictions between economic optimization, energy conservation and environmental protection, and system security. The specific manifestations are: on the one hand, the corporate attributes of power grid enterprises determine their characteristics of pursuing power grid benefits; The requirement of stable operation determines that the security of the power grid is very important. The compreh...

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 方仍存汪颖翔周玉洁张籍陈峰黄竞择
Owner STATE GRID CORP OF CHINA
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