A Weight Calculation Method for Reducing Mutual Interference of Transformer State Evaluation Indicators

• Published in: IOP conference series. Earth and environmental science 2020-10, Vol.585 (1), p.12125
• Main Authors: Yigang, He, Wei, Wu, Jin, Tong
• Format: Article
• Language: English
• Subjects: Analytic hierarchy process; Decision analysis; Decision making; Evaluation; Experimental methods; Indicators; Interference; Mathematical analysis; Simulation analysis; Transformers; Weighting methods; White noise
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/585/1/012125

Aiming at the problem that the traditional indicator weight calculation method ignores the mutual influence between indicators and causes the deviation of the calculation results, this paper proposes a transformer state evaluation calculation methods combining of FAHP(Fuzzy Analytical Hierarchy Process) - DEMATEL (Decision-making Trial and Evaluation Laboratory) method and CRITIC (Criteria Importance Though Intercriteria Correlation) method; after selecting the index parameters and dividing the state level, the state evaluation index system is established; based on the combination weighting method to calculate the two methods The optimal weight is combined with the transformer status score to obtain the status evaluation of the transformer. After the case analysis, it can be seen that the method is practical compared with the actual situation obtained from the maintenance; based on the traditional FAHP method and the experimental method in this paper, the Gaussian white noise is added to experimental data increase the interference between enhancement indicators. After simulation analysis, it is found the final state score of the transformer obtained by this method is smoother and more stable. Compared with traditional methods, this paper reduces the errors caused by the mutual influence of indicators and makes the evaluation results more accurate.