Intermediate-voltage distribution operation state fuzzy integrated evaluation method based on principle component analysis method and entropy weight method

A technology of fuzzy comprehensive evaluation and principal component analysis method, applied in the field of operation evaluation of 10kV medium voltage distribution network, to achieve the effect of high identification

Inactive Publication Date: 2016-06-29
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

However, the index weights and resolution coefficients in this method need to be manually formulated, which has certain subjective influence

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  • Intermediate-voltage distribution operation state fuzzy integrated evaluation method based on principle component analysis method and entropy weight method
  • Intermediate-voltage distribution operation state fuzzy integrated evaluation method based on principle component analysis method and entropy weight method
  • Intermediate-voltage distribution operation state fuzzy integrated evaluation method based on principle component analysis method and entropy weight method

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Embodiment Construction

[0079] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0080] This embodiment is used for a transformer with 8 box transformers, 1164 pole transformers, 23 overhead lines, 26 section switches and 7 contact switches. The capacity of all distribution transformers is about 220.68MVA and the total length of the lines is about 775.056 The operating status of the 10kV medium-voltage distribution network of km is comprehensively evaluated. The specific process of evaluation is as follows: figure 1 shown.

[0081] This embodiment includes: constructing a fuzzy comprehensive evaluation index system for the operation status of the medium-voltage distributi...

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Abstract

The invention discloses an intermediate-voltage distribution operation state fuzzy integrated evaluation method based on a principle component analysis method and an entropy weight method. Major information in source data can be reserved by use of the principle component analysis method, a power supply capability, power supply quality and economic indexes are taken as the source data representing an operation state of a distribution network, through solving a feature value and a feature vector of a correlation coefficient matrix, principle components of operation of the distribution network are determined, and an evaluation system with weak correlation yet large envelope information content is formed. Given fuzziness existing in index evaluation, new evaluation indexes are objectively endowed with weights by use of the entropy weight method in the system, and a fuzzy integrated evaluation system of a 10kV distribution network operation mode is finally formed. According to the invention, the fuzziness of the evaluation indexes is taken into consideration, qualitative analysis and quantitative determination are realized, and the method provided by the invention is reasonable and scientific to a certain degree.

Description

technical field [0001] The invention relates to the field of operation evaluation of a 10kV medium-voltage distribution network, in particular to the determination of the operation state evaluation index, weight and comprehensive system of the 10kV medium-voltage distribution network. Background technique [0002] During the operation of the 10kV medium-voltage distribution network, in order to compare the advantages and disadvantages of the distribution network operation mode under actual conditions and obtain the optimal operation mode, the operation modes of different distribution networks are often evaluated. By comparing the evaluation results, the optimal operation scheme can be selected to determine the best operation mode of the distribution network. However, the general distribution network evaluation only obtains relative results for some evaluation indicators, which cannot reflect the integrity of the network, and the obtained results are relatively narrow. There...

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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 连鸿波赵时桦王承民黄淳驿姚伟沈忠旗汤晓伟李家睿刘涌裘青云祁桂刚陈旸曾琪胡翼黄诚马成红
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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