物元理论和证据理论相结合的电能质量综合评估

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摘要针对电能质量综合评估中存在的不确定性及主观性,提出了一种基于物元理论和证据理论相结合的电能质量综合评估方法.该方法运用可拓学中的物元理论建立电能质量的物元模型,利用关联函数将电能质量各项评估指标与各个质量等级的评价区间之间的隶属关系定量化,并将其进行归一化处理,进而获得各指标的基本信度函数;然后利用熵权法与G1法相结合的复合赋权法确定电能质量各评估指标的权重,用来修正原始证据的基本信度函数,在此基础上,利用证据组合规则对其进行融合,从而得到电能质量的综合评估结果.实例计算表明,该方法最大限度地减少了评估过程中的不确定性,能够得到更精确,客观的综合评估结果.

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	李玲玲
	刘敬杰
	凌跃胜
	周贤
	张云龙

关键词 ：电能质量, 物元理论, 证据理论, 综合评估

Abstract：In order to solve the uncertainty and subjectivity of power quality comprehensive evaluation, an power quality comprehensive evaluation method is proposed based on matter-element theory and evidence theory in the paper. it use matter-element to establish matter-element model of power quality, it quantifies the subordinate relation of various evaluation indexes and evaluation interval of quality grades by correlation function, and normalizes it to obtain the belief function of each index. Then the weight of each evaluation index of power quality is obtained by using combination weighing method based on entropy weight and G1 method, to modify belef functions of the original evidence. on this basis, using evidence combination rule fuses various evaluation indexes, so as to obtain power quality comprehensive assessment. The calculation of an example shows that the proposed method minimizes the uncertainty in assessment process, can get more.

Key words： Power quality matter-element theory evidence theory comprehensive evaluation

收稿日期: 2013-08-06 出版日期: 2015-09-14

PACS:

TM732

基金资助:河北省科技支撑计划项目(12212173和13212104); 河北省建设科技研究计划项目(2011-147); 河北省高等学校创新团队领军人才培育计划项目(LJRC003)

作者简介: 李玲玲女,1968年生,博士,教授,博士生导师,研究方向为电力系统及其电器可靠性.刘敬杰女,1985年生,硕士研究生,研究方向为电器可靠性.

引用本文:

李玲玲,刘敬杰,凌跃胜,周贤,张云龙. 物元理论和证据理论相结合的电能质量综合评估[J]. 电工技术学报, 2015, 30(12): 383-391. Li Lingling,Liu Jingjie,Ling Yuesheng,Zhou Xian,Zhang Yunlong. Power Quality Comprehensive Evaluation Based on Matter-Element Theory and Evidence Theory. Transactions of China Electrotechnical Society, 2015, 30(12): 383-391.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I12/383

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