Abstract:

In order to overcome the shortcomings that the traditional evaluation method can not tap the potential influencing factors of the line loss in low voltage station area,and the reliability of the line loss evaluation is not high,a line loss evaluation method based on data-driven is proposed.The 10 influencing factors of the line loss of low voltage station area are obtained,and divided into two categories of evaluation indicators of inherent attributes and operating attributes.The orthogonal signal correction method (OSC) is used to remove the orthogonal components of the influencing factors and the line loss of the low voltage station area,and the comparison sequence of gray relation analysis (GRA) is used to obtain the weight contribution of the evaluation index to the line loss of the low voltage station area.Taking 10 A-level power supply stations as an example,GRA,OSC-GRA,AHP-FA three algorithms are used to evaluate the line loss of the low voltage station area.The results show that OSC-GRA has the highest accuracy in digging the potential relationship between line loss influencing factors and performing ranking evaluation.

Key words: low voltage station area, orthogonal signal correction (OSC) method, gray relation analysis (GRA), line loss evaluation