Power Quality Comprehensive Evaluation for Low-Voltage DC Power Distribution System

2019 IEEE 3rd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC) Pub Date : 2019-03-01 DOI:10.1109/ITNEC.2019.8729529

Ding Kai, Li Wei, Hu Yuchuan, Huaming Pan, Qian Yimin

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引用次数: 18

Abstract

With the development of low-voltage DC (LVDC) power distribution system and more and more strict requirements on power quality of consumers, it has been more and more important to give a power quality comprehensive evaluation method for LVDC power distribution system. However, the existing comprehensive method of power quality, which focuses on AC power system, is not applicable to DC power distribution system well. In order to study DC power distribution system better and improve the power quality problems effectively, a new power quality comprehensive evaluation method for LVDC power distribution system should be put forward. This paper establishes the comprehensive evaluation indicator system for LVDC power distribution system, adopts the comprehensive weighting method combined with analytic hierarchy process (AHP) and entropy weight coefficient method, and applies grey relational analysis (GRA) in the comprehensive evaluation of power quality. Finally, a case study shows that the proposed comprehensive evaluation method can effectively evaluate the power quality of the object.

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低压直流配电系统电能质量综合评价

随着低压直流(LVDC)配电系统的发展和用户对电能质量的要求越来越严格，对低压直流配电系统的电能质量进行综合评价变得越来越重要。然而，现有的电能质量综合评价方法主要针对交流供电系统，并不适用于直流配电系统。为了更好地研究直流配电系统，有效地改善电能质量问题，有必要提出一种新的LVDC配电系统电能质量综合评价方法。本文建立了LVDC配电系统的综合评价指标体系，采用层次分析法(AHP)和熵权系数法相结合的综合赋权法，并将灰色关联分析法(GRA)应用于电能质量的综合评价。最后，通过实例分析表明，所提出的综合评价方法能够有效地评价目标的电能质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 IEEE 3rd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC)

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