A new improved entropy method and its application in power quality evaluation

作者：Ouyang, Sen; Shi, Yili^*

来源：Automation of Electric Power Systems, 2013, 37(21): 156-159+164.

DOI：10.7500/AEPS201210206

• Backpropagation network
• Entropy methods
• Entropy weight method
• Power quality evaluation
• Power quality indices
• Power supply bureaux
• Quantitative values
• Sequential correlations

This paper is concerned with a power quality evaluation method based on the improved entropy method, which fixes the problem of the traditional entropy weight method that entropy weights present a wrong message of entropy when all the entropy values are close to 1. The proposed method achieves efficient performance by designing a back propagation (BP) network calculation model. Firstly, the synthetic weights of power quality indices are calculated by sequential correlation analysis and the improved entropy method, thereby by passing the one-sidedness of being subjective or objective. And the quantitative values of multi-index are obtained. Then a BP network calculation model is designed to make the evaluation method more efficient and more practical. The evaluation by a power supply bureau has verified the effectiveness of the proposed algorithm.

• 出版日期2013-11-10
• 单位华南理工大学