摘要
随着分布式电源大规模地并网,导致电网电能质量问题日益突出,直接威胁到电网的安全稳定运行。为准确地评估系统电能质量状况,提出了一种主客观变异系数组合赋权电能质量综合评估方法,首先采用层次分析法和指标相关性权重法相结合的方法进行主、客观赋权,然后采用变异系数法求解兼顾主观评价和客观评价的综合权重。该方法综合考虑了主观与客观评估信息,能有效避免主观随意性和客观片面性的弊端。最后通过对实际数据的分析,结果表明所提方法同时考虑了主观和客观因素,综合评估结果更具有可信度与合理性。
At present,the large-scale grid-connection of distributed generation leads to the deterioration of power quality,and it directly threatens the secure and stable operation of power grid.To accurately evaluate power quality condition of power grid,a comprehensive power quality evaluation method based on subjective and objective variation coefficient combination weighting was proposed.Firstly,a method combining analytic hierarchy process(abbr.AHP)with criteria importance though intercrieria correlation(abbr.CRITIC)was adopted to carry out subjective and objective synthetic weighting.Secondly,the variation coefficient method was used to solve the comprehensive weight by which the abuses such as subjective randomness and objective one-sidedness could be effectively avoided.Finally,the results of analyzing practical data show that the proposed method simultaneously considers both subject and object factors,thus the results of comprehensive evaluation are more credible and reasonable.
作者
张明
夏若平
徐诗露
陆东亮
胡益胜
ZHANG Ming;XIA Ruoping;XU Shilu;LU Dongliang;HU Yisheng(School of Electronic and Electrical Engineering,Wuhan Textile University,Wuhan 430200,Hubei Province,China;Hawk Electronics Pte Ltd.,Wuhan 430024,Hubei Province,China)
出处
《现代电力》
北大核心
2023年第4期441-447,共7页
Modern Electric Power
关键词
电能质量
综合评估
主客观组合赋权
AHP-CRITIC法
变异系数
power quality
comprehensive evaluation
subjective and objective synthetic weighting
AHP-CRITIC method
variation coefficient
