电网技术2013，Vol.37Issue(2)：562-567,6.
基于动态时间弯曲空间距离度量的电能质量综合评估
Synthetic Evaluation of Power Quality Based on Dynamic Time Warping Spatial Distance Measurement
摘要
Abstract
The quantized result from synthetic evaluation of power quality is one of the foundations to assess power quality and is favorable to implement the market mechanism of pricing electric energy according to power quality. Integrating analytic hierarchy process (AHP) with entropy weight, the synthetical weights of power quality indices are determined; meanwhile, the thinking of spatial distance measurement is applied to synthetical evaluation of power quality to turn the power quality indices into pattern distance in space. The dynamic time wrapping (DTW) algorithm is adopted for sequence pattern identification to calculate matching coefficients among weighted standard power quality index sequence, power quality index sequence to be evaluated and ideal power quality index sequence, and then the grade of power quality is determined to implement the synthetical evaluation and level assessment of power quality. Calculation results of case study show that the proposed synthetical evaluation method is effective and feasible.关键词
电能质量/空间距离度量/模式识别/综合评估/分级评估/动态时间弯曲算法/匹配系数Key words
power quality/ spatial distance measurement/pattern recognition/ synthetic evaluation/ graded assessment/dynamic time warping (DTW)/ matching coefficient分类
信息技术与安全科学引用本文复制引用
林德清,顾伟,王元凯,袁晓冬,李群,王锐..基于动态时间弯曲空间距离度量的电能质量综合评估[J].电网技术,2013,37(2):562-567,6.基金项目
国家高技术研究发展计划项目(863计划)(2011AA05A107) （863计划）
国家自然科学基金项目(50907008). （50907008）
