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Gaoya dianqi, 2016 由于传统电能质量评估方法无法体现"分布式"特征,难以评估分布式光伏电能质量。为了解决这一问题,首先对主观赋权法和客观赋权法进行综合比较,提出采用熵权法进行赋权。然后引入改进AHP和指标极化处理,对熵权法进行改进。建立涵盖输入、过程和输出3方面的指标体系,采用改进熵权法进行评估。实例表明,改进熵权法能较为充分地利用实测的小样本数据,能较好地体现"分布式"特征,可以为分布式光伏电能质量评估提供参考。
马春艳, 刘惠康, 龚瑛
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Gaoya dianqi, 2019 弹簧势能的可靠储存是保障断路器后续分合闸操作正确的前提。通过分析控制回路、电机、传动部件和弹簧之间的能量转换和传递关系,提出一种电—振信号熵权特征联合的断路器储能机构故障类型辨识方法。首先利用希尔伯特变换（Hilbert transform）提取储能电机电流信号包络时域特征并计算峭度;然后由局部均值分解（LMD）处理断路器储能过程伴随的振动信号得到乘积函数分量（PF）,并提取PF能量谱频域的盒维数特征;进而采用熵权法对电流和振动信号待分类样本进行剪辑,按照样本信息量和重要性赋予对应的权重 ...
赵书涛 +5 more
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考虑动态赋权的江水源热泵供能系统模糊综合评价方法研究 [PDF]
全球能源互联网, 2021 针对当前江水源热泵供能系统评价指标体系单一、赋权忽略动态变化及定性指标无法量化等问题，通过分析江水源热泵供能系统的工作原理及运行特点，从技术、经济及环保三个方面构建了江水源热泵技术经济综合评价指标体系。文中采用模糊评价方法量化定性指标，并通过层次分析法-熵值赋权法获得评价指标体系组合权重。考虑到江水源热泵供能系统在不同场景运行下的权值动态变化，提出基于动态赋权的权值动态修正方法，实现评价指标的动态赋权。针对长江沿岸地区某江水源热泵供能系统进行评价方法的应用，验证了该评价方法与实际情况相符。
郭松 +5 more
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Gaoya dianqi, 2022 电缆质量直接影响电网运行的安全与稳定,为了更好地监管电缆质量,辨别优劣供应商,文中提出了一种基于熵权—层次分析融合的电力电缆质量评价方法,充分挖掘抽样检测等监管过程的大量数据,通过试验项目赋值权重和检测等级划分等手段,计算被检产品的质量加权分数,结合数理统计分析方法,实现对合格供应商的供货质量排序。选取了10家合格供应商的500份产品抽检报告,开展了质量分析排名。研究结果提示,该方法能够较好地区分不同合格供应商的质量水平,评价合格供应商产品质量的一致性和持续性 ...
熊汉武 +5 more
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Research on Comprehensive Evaluation of Electricity Market Risk Based on Subjective and Objective Weighting [PDF]
, 2023 [Introduction] With the emphasis and promotion of the electricity market system construction by the government, the electricity market is constantly growing towards a deeper and more unified direction.
Long JIANG +4 more
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Evaluation of Changes in the Characteristic Flavor of Ultra-high Temperature Sterilized Milk under the Effects of Temperature and Light [PDF]
, 2023 In order to study changes in the characteristic flavor of ultra-high temperature sterilized (UHT) milk under the influence of storage temperature and light, headspace solid phase microextraction (SPME) combined with gas chromatography-mass spectrometry ...
LI Zepeng, DENG Yuming, ZENG Ke, XI Hongjie, LU Lixin, SONG Lijun
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, 2023 天然气压力能是一种新兴清洁能源，对其进行高效利用是节约能源、降低碳排放的有效手段。目前，天然气压力能回收利用中存在用能模式单一、评估指标片面以及评估方法缺乏等问题，导致天然气压力能利用率低，运行效益和系统不足无法被准确评估，行业发展受阻。首先，提出了天然气压力能综合利用方案，使用透平膨胀机回收压力能发电，降压过程中产生的冷能用于制冰，并加入太阳能热水系统提高出站气温度，提高能源利用效率。其次，基于分析模型并考虑经济性和环保性构建了压力能利用系统运行效益评估指标体系，对系统的运行状态进行全面、综合的评估 ...
廖长江 +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2022 运用截断函数方法以及变指数在加权Sobolev空间中的嵌入关系，通过选取适当的检验函数，证明了一类非线性椭圆方程熵解的存在性。
DAILili(代丽丽)
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Research on Decomposition of Urban Energy-Saving Indicator Based on Combination Weighting and Clustering [PDF]
, 2023 [Introduction] The proposal of the "dual carbon" strategy has given new requirements and connotations to the reduction of energy consumption intensity and the "dual control" of the total amount.
Jinlin XIE, Shu ZHANG, Yuanlin CHENG
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Wide area cooperative resource allocation algorithm for shortwave communication access network [PDF]
, 2023 Aiming at the problem that short-wave point-to-point communication was not reliable enough to meet the actual needs, a wide area cooperative resource allocation algorithm based on shortwave communication access network was proposed.The reliability of the
Changrong YE +3 more
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