基于灰色关联度的架空线路运行状态的评价

Evaluation of Overhead Transmission Lines Operation Based on Grey Relation Correlation

为了实现线路检修工作的科学化和线路运行的安全性,提出了架空输电线路运行状态的灰色关联分析综合评价模型。该模型根据线路的构成元件,定义了5种特征指标集,以灰色关联分析法计算各元件的关联系数,用层次分析法确定权重系数,然后通过权重系数矩阵和灰色关联系数矩阵相乘得关联度,最后采用关联度排序进行评价分析。实际算例表明,使用该方法得到的评价结果客观合理,线路检修工作可按照线路的实际运行状态进行,节省大量人力和财力资源,不仅提高了经济效益而且保证了线路运行的安全性。

To achieve the scientific maintenances for overhead transmission lines and the security of operation state of overhead transmission lines, the grey relation method was used to analyze hierarchy process for overhead transmission lines, and an operation theory comprehensive evaluation model was established. According to the constitute components of overhead transmission lines, 5 kinds of characteristic relation evaluation object factor sets were defined , the typical grey relation evaluation object factor sets and the partner factor were chosen ,and optimum grey relational constitute components were ascertained. Moreover,grey relational coefficients about all kinds of chosen components were comfirmed by the grey correlation theory, the facter weight was calculated by the analytic hierarchy process, and grey relational coefficients were calculated by the grey relational coefficients matrix multiplying facter weight matrix. Finally,the correlation was used to analyze and comprehensively evaluate. Good results can be achieved on the basis of the calculation and analysis of the actual overhead transmission lines. It is indicated that the grey relation method can examine and repair overhead transmission lines job according to actual overhead transmission lines operation state in progress,and may economize large amount of manpower and financial resources.