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首页> 中文期刊> 《中国电机工程学会电力与能源系统学报》 >Synthetic Evaluation of Steady-state Power Quality Based on Combination Weighting and Principal Component Projection Method

Synthetic Evaluation of Steady-state Power Quality Based on Combination Weighting and Principal Component Projection Method

         
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摘要

With integration of renewable energy and use of non-linear loads in power systems, the power quality problem is increasingly attracting attention of researchers. In China, standards for individual power quality indexes are set. However, when evaluating power quality in practice, individual indexes cannot directly reflect a comprehensive level of power quality. In this paper, a comprehensive analysis of various indexes is conducted to obtain a unified parameter for describing the characteristics of power quality from an overall perspective. First, weight values of power quality indexes are calculated by combining the subjective and objective weight. Then, based on the principal components of the projection method, projection values of boundary data and data to be evaluated are obtained. Finally, using these projection values, a grade range for power quality data is located. A practical case study is presented to show the validity of the proposed method for evaluating power quality.

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    Jidong Wang; Wenjie Pang; Lipeng Wang; Xipin Pang; Ryuichi Yokoyama;

  • 作者单位

    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;

    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;

    Graduate School of Environment and Energy Engineering, Waseda University, Tokyo 169-8555, Japan;

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