基于组合赋权雷达图实现电网电能质量综合评估

Synthetic evaluation for power quality based on improved combination weighting radar chart

将改进的组合赋权雷达图方法用于电网电能质量综合评估。对主观、客观赋权法组合,基于组合权重与原权重之间的偏差尽可能小的优化思想,求取雷达图中各项指标的组合权值。利用各指标对应的扇形区域的对角线作为指标轴绘制雷达图,不仅最大限度体现各指标的独立权重,也反映了各指标之间的相互影响。利用雷达图的面积和周长两个变量完成对电能质量的综合评估。最后通过应用实例,验证了论文方法的合理性和在电能质量综合评估中的有效性。

Improved combination weighting radar chart method is provided and applied in synthetic evaluation of power quality.The optimization model was established based on minimizing the deviation between the vectors of evaluation weights before and after the combination weighting.In the method,the sector area was ranked and the angle of the sector area was distributed by the weighting.Moreover,the diagonal of sector area was employed by using the radar chart as index axes.The unattached weighting of every index was not only reflected by the whole hog,but also the interactant was incarnated.Synthetic evaluation of power quality was completed by the area and girth of the radar chart.Verification results demonstrate the reliability and validity of the method.