CAJ | 학술논문

电能质量是多个指标的有机综合,虽然世界各国对各个电能质量指标制定了一系列的标准,但这些用来确定单个指标合格与不合格的标准,不能全面、真实、唯一地反映总的电能质量的性质.针对这种情况,结合改进的层次分析法(AHP)和概率统计法对电能质量进行综合评估.该方法首先根据层次分析法得到判断矩阵,再用二阶段线性规划的方法而非传统的特征向量法得到各项指标权值,然后采用概率统计的方法将各项指标综合量化,得到评价综合电能质量的唯一量化指标,并给出分级评价方法.文章最后的实例分析将该方法应用于电气化铁路电能质量的评估.
전능질량시다개지표적유궤종합,수연세계각국대각개전능질량지표제정료일계렬적표준,단저사용래학정단개지표합격여불합격적표준,불능전면、진실、유일지반영총적전능질량적성질.침대저충정황,결합개진적층차분석법(AHP)화개솔통계법대전능질량진행종합평고.해방법수선근거층차분석법득도판단구진,재용이계단선성규화적방법이비전통적특정향량법득도각항지표권치,연후채용개솔통계적방법장각항지표종합양화,득도평개종합전능질량적유일양화지표,병급출분급평개방법.문장최후적실례분석장해방법응용우전기화철로전능질량적평고.
Power quality is represented by several indexes showing each aspects of electric energy. A series of standards are formulated in many countries, which can only judge whether each index is qualified. However, they can not reflect the nature of power quality completely, truly, and uniquely. As a result, a new method based on improved AHP and probability statistics is presented to evaluate the power quality. Firstly the judgment matrix is generated within the framework of AHP, then the weights are obtained by applying two-stage linear programming approach, different from typical eigenvector method. Finally, each index is quantified with probability statistic, based on which the unique synthetic evaluation value of power quality can be obtained. The class evaluation method is presented to evaluate the unique value. An analysis example of evaluating the power quality caused by electric railway is given.