A Quantitative Evaluation Method for Live-Line Operation Security in Distribution Network Based on AHP and Attribute Reduction
Aiming at the problems of difficult evaluation due to difficult feature extraction and large error of index weight calculation in live working environment of distribution network,a security quantitative evaluation method based on analytic hierarchy process(AHP)and attribute reduction was proposed to achieve effective solution.The linear correlation analysis method is used to solve the safety quantitative indicators that have linear correlation with job safety:on-line operation state,operation years,equipment failure rate and on-line overload rate of distribution network.The calculation formula is given and the specific attribute expression is obtained.We establish a quantitative security evaluation method integrating analytic hierarchy process(AHP)and attribute reduction,take the obtained quantitative indicators as impact factors,give evaluation indicators corresponding to each level,set up rating levels,carry out evaluation indicators comparison,design decision matrix and weight calculation matrix,and substitute operation parameters to obtain weighted values to achieve effective evaluation.The experimental results show that the proposed method has high accuracy,strong robustness and reliability,and good practical effect for the safety evaluation of live operation in distribution network.
analytic hierarchy processattribute reductionlive operation of distribution networkquantitative evaluation of safetylinear correlation analysis
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