Evaluation Method of Distribution Network Operation Level Based on Combination Weighting and Improved Grey Correlation

doi:10.3969/j.issn.1008-0198.2023.03.011

Abstract

Abstract: Reasonable evaluation of distribution network operation level can provide reference for distribution network planning, transformation and operation optimization, which is of great significance to the safe and stable operation of distribution network. By using the related indexes that affect the operation level of distribution network, a method based on combination weighting and improved grey correlation is proposed to evaluate the operation level of distribution network. Firstly, the correlation coefficient of each evaluation index of distribution network operation level is introduced, and the combined weight method is used to modify the comprehensive weight of each index, and then the comprehensive evaluation index of each region is obtained, thus, the weak area of distribution network operation level is identified and the target area in urgent need of transformation is obtained. Then, the mean difference influence coefficient is introduced to improve the traditional grey correlation method, and the correlation degree between the influencing factors of distribution network operation level and the comprehensive evaluation index is obtained, so as to get the influence degree of each influencing factor on the distribution network operation level. Finally, the effectiveness and superiority of the proposed method are verified by an example.

Key words: distribution network operation level, combination of empowerment, improved grey correlation, comprehensive evaluation

CLC Number:

TM727

LAN Zheng, GUO Kaitao, YIN Rui, ZOU Bin, ZENG Jinhui, TAN Youqi, LI Juan. Evaluation Method of Distribution Network Operation Level Based on Combination Weighting and Improved Grey Correlation[J]. Hunan Electric Power, 2023, 43(3): 70-76.

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