基于雷达图法的电能质量综合评估模型

A Comprehensive Power Quality Evaluation Model Based on Radar Chart Method

在国家标准规定的相关电能质量指标限值基础上,建立了同一尺度下的统一型电能质量指标体系,提出了一种基于雷达图法的电能质量综合评估方法。该方法先引入统一型电能质量指标,再通过多层次交互式算法确定各指标权重;然后改进传统雷达图法的特征量计算方法,将其应用于电能质量综合评估中。评估过程避免了数据归一化过程中的信息丢失,而且评估结果简明、清晰、直观。算例结果表明,所提出的电能质量评估方法直观可信,具有实际意义。

Based on the limits to relevant power quality indices set in national standards, a unified power quality index system is established in the same measuring scale. This paper presents a comprehensive power quality evaluation model based on the radar chart method. First, unified power quality indices are introduced. The weight of each index is determined with the multi- level interactive algorithm. Then an improved radar chart method of the eigenvalue calculating algorithm is applied to the comprehensive evaluation of power quality, in the process of which the information loss due to data naturalization is avoided and the evaluation result is concise, clear and intuitive. Simulation results show that the evaluation method proposed is intuitive and credible and of greater realistic significance.