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Dombi-Normalized Weighted Bonferroni Mean Operators with Novel Multiple-Valued Complex Neutrosophic Uncertain Linguistic Sets and Their Application in Decision Making 被引量:1
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作者 Tahir Mahmood Zeeshan Ali +1 位作者 Dulyawit Prangchumpol Thammarat Panityakul 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第3期1587-1623,共37页
Although fuzzy set concepts have evolved,neutrosophic sets are attractingmore attention due to the greater power of the structure of neutrosophic sets.The ability to account for components that are true,false or neith... Although fuzzy set concepts have evolved,neutrosophic sets are attractingmore attention due to the greater power of the structure of neutrosophic sets.The ability to account for components that are true,false or neither true nor false is useful in the resolution of real-life problems.However,simultaneous variations render neutrosophic sets unsuitable in specific circumstances.To enable the management of these sorts of issues,we combine the principle of multi-valued neutrosophic uncertain linguistic sets and complex fuzzy sets to develop the principle of multivalued complex neutrosophic uncertain linguistic sets.Multi-valued complex neutrosophic uncertain linguistic sets can contain grades of truth,abstinence,and falsity,and uncertain linguistic terms,which are expressed as complex numbers whose real and imaginary parts are limited to the unit interval.Some important Dombi laws are elaborated along with Bonferroni mean operators,which offer a flexible general structure with modifiable factors.Bonferroni means aggregation operators perform a significant role in conveying the magnitude level of options and characteristics.To determine relationships among any number of attributes,we develop multi-valued complex neutrosophic uncertain linguistic Dombi-normalized weighted Bonferroni mean operators and discuss their important properties with some special cases.By using these laws,we can deploy themulti-attribute decisionmaking(MADM)technique using the novel principle of multi-valued complex neutrosophic uncertain linguistic sets.To determine the power and flexibility of the elaborated approach,we resolve some numerical examples based on the proposed operator.Finally,the work is validated with the help of comparative analysis,a discussion of its advantages,and geometric expressions of the elaborated theories. 展开更多
关键词 Multi-valued complex neutrosophic uncertain linguistic sets Dombi normalized weighted Bonferroni mean operators multi-attribute decision-making methods
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Response analysis based on smallest interval-set of parameters for structures with uncertainty 被引量:1
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作者 王晓军 王磊 邱志平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2012年第9期1153-1166,共14页
An integral analytic process from quantification to propagation based on limited uncertain parameters is investigated to deal with practical engineering problems. A new method by use of the smallest interval-set/hyper... An integral analytic process from quantification to propagation based on limited uncertain parameters is investigated to deal with practical engineering problems. A new method by use of the smallest interval-set/hyper-rectangle containing all exper- imental data is proposed to quantify the parameter uncertainties. With the smallest parameter interval-set, the uncertainty sponse and the least favorable response propagation evaluation of the most favorable re- of the structures is studied based on the interval analysis. The relationship between the proposed interval analysis method (IAM) and the classical IAM is discussed. Two numerical examples are presented to demonstrate the feasibility and validity of the proposed method. 展开更多
关键词 quantification analysis smallest interval-set/hyper-rectangle uncertain structural response most favorable response least favorable response
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Reachable set estimation for discrete-time Markovian jump neural networks with unified uncertain transition probability
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作者 Yufeng Tian Wengang Ao Peng Shi 《Journal of Automation and Intelligence》 2023年第3期167-174,共8页
This paper focuses on the reachable set estimation for Markovian jump neural networks with time delay.By allowing uncertainty in the transition probabilities,a framework unifies and enhances the generality and realism... This paper focuses on the reachable set estimation for Markovian jump neural networks with time delay.By allowing uncertainty in the transition probabilities,a framework unifies and enhances the generality and realism of these systems.To fully exploit the unified uncertain transition probabilities,an equivalent transformation technique is introduced as an alternative to traditional estimation methods,effectively utilizing the information of transition probabilities.Furthermore,a vector Wirtinger-based summation inequality is proposed,which captures more system information compared to existing ones.Building upon these components,a novel condition that guarantees a reachable set estimation is presented for Markovian jump neural networks with unified uncertain transition probabilities.A numerical example is illustrated to demonstrate the superiority of the approaches. 展开更多
关键词 Markovian jump neural networks Unified uncertain transition probabilities Reachable set estimation Double-boundary approach Vector wirtinger-based summation inequality
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基于后悔理论的概率不确定语言中智决策方法
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作者 朱丽 陈春芳 熊啟捷 《南昌大学学报(理科版)》 2025年第1期1-11,共11页
为研究语言环境下的概率中智决策问题,提出了概率不确定语言中智集和概率不确定语言中智元的概念,建立了一种基于后悔理论的概率不确定语言中智多属性决策方法。首先,通过定义得分函数和标准差,给出了概率不确定语言中智元的比较方法,... 为研究语言环境下的概率中智决策问题,提出了概率不确定语言中智集和概率不确定语言中智元的概念,建立了一种基于后悔理论的概率不确定语言中智多属性决策方法。首先,通过定义得分函数和标准差,给出了概率不确定语言中智元的比较方法,同时也讨论了概率不确定语言中智元的距离度量及其性质。其次,针对属性值为概率不确定语言中智元的多属性决策问题,根据与理想点的灰色关联系数得到决策属性的期望效用值。然后,基于后悔理论,利用成对比较的后悔-欣喜值获得方案的综合感知效用值,实现方案的优选。最后,通过算例分析表明了该方法的有效性。 展开更多
关键词 多属性决策 概率不确定语言中智集 后悔理论 灰色关联系数
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基于随机鲁棒优化的配电网分布式光伏承载能力综合评估方法
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作者 翟苏巍 张馨介 +3 位作者 李文云 高天亮 于全喜 梁峻恺 《太阳能学报》 北大核心 2025年第7期624-635,共12页
为有效评估配电网的分布式光伏承载能力,提出一种基于随机鲁棒优化的配电网分布式光伏承载能力综合评估方法。首先,采用K-均值聚类方法对配电网负荷水平进行聚类。然后,利用随机优化算法来应对负荷水平的不确定性。针对光伏出力的不确... 为有效评估配电网的分布式光伏承载能力,提出一种基于随机鲁棒优化的配电网分布式光伏承载能力综合评估方法。首先,采用K-均值聚类方法对配电网负荷水平进行聚类。然后,利用随机优化算法来应对负荷水平的不确定性。针对光伏出力的不确定性和传统盒式不确定集合的局限性,提出多区间不确定集合来描述分布式光伏出力的波动性。接着,综合考虑到电网的安全性、充裕性和经济性,建立基于随机鲁棒优化的配电网分布式光伏承载能力综合评估模型。最后,通过某地区10 kV配电系统仿真验证表明,通过该方法可全面合理地分析配电网内分布式光伏的承载力,提升评估准确性。 展开更多
关键词 K-均值聚类 多区间不确定集合 随机鲁棒优化 光伏承载能力 综合评估
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大数据背景下培养拓扑专业研究生从“打实专业基础”到“引领交叉研究”的探索
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作者 马利文 《首都师范大学学报(自然科学版)》 2025年第5期83-90,共8页
针对理论数学专业,以拓扑学专业的研究生培养为例,旨在探讨在大数据背景下,如何构建一套既能巩固拓扑学专业基础,又能引领在当前大数据时代信息领域进行交叉学科研究的研究生培养模式。通过回顾拓扑学的历史发展及其在现代科学中的地位... 针对理论数学专业,以拓扑学专业的研究生培养为例,旨在探讨在大数据背景下,如何构建一套既能巩固拓扑学专业基础,又能引领在当前大数据时代信息领域进行交叉学科研究的研究生培养模式。通过回顾拓扑学的历史发展及其在现代科学中的地位,分析目前拓扑学研究生教育的现状及存在的问题,结合传统与创新的教学方法,提出了一套从“打实专业基础”到“引领交叉研究”的研究生培养模式;阐述了相关交叉学科研究在拓扑学领域的重要性,以及目前开展交叉研究的各个方向和成功案例;最后,通过总结研究经验和不足之处,对未来的拓扑学研究生教育提出了建议和展望。希冀对于指导拓扑学及相关理论数学领域的研究生教育者具有借鉴价值。 展开更多
关键词 拓扑学 交叉研究 不确定集理论 拓扑数据分析 最优化理论
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交直流配电系统预想风险场景集构建与模式化应对方法
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作者 唐兆杰 张铭宸 +2 位作者 詹惠瑜 柏晶晶 罗李子 《浙江电力》 2025年第4期72-83,共12页
日益复杂的配网架构与不断扩大的新型源荷资源给配电系统带来诸多运行风险与挑战,配电系统中电压越限、支路过载等问题频繁出现,严重影响配电系统安全性与可靠性,亟需提升配电系统风险评估与风险快速应对能力。为实现交直流配电系统风... 日益复杂的配网架构与不断扩大的新型源荷资源给配电系统带来诸多运行风险与挑战,配电系统中电压越限、支路过载等问题频繁出现,严重影响配电系统安全性与可靠性,亟需提升配电系统风险评估与风险快速应对能力。为实现交直流配电系统风险快速应对,提出了一种交直流配电系统预想风险场景集构建与模式化应对方法。首先,构建了基于不确定潮流计算结果的交直流配电系统运行风险评估体系,梳理了交直流配电系统潜在风险元素,提出了考虑风险场景发生概率与风险场景影响的预想风险场景集构建方法;其次,提出了基于系统预想风险场景集中风险元素的预想风险场景应对策略库生成方法,引入免疫风险理论机制,提出了一种基于模糊评价的配电系统全局运行状态评估的模式化应对控制信号生成方法;最后,提出了基于风险场景相似度的模式化应对策略生成方法,并进行算例分析验证了所提模式化应对方法的有效性。 展开更多
关键词 交直流配电系统 不确定潮流 运行风险评估 预想风险场景集 模式化应对方法
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Interactive group decision making procedure based on uncertain multiplicative linguistic preference relations 被引量:10
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作者 Zeshui Xu1,2,1.College of Economics and Management,Southeast University,Nanjing 210096,P.R.China 2.Institute of Sciences,University of Science and Technology of the PLA,Nanjing 210007,P.R.China 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2010年第3期408-415,共8页
Group decision making problems are investigated with uncertain multiplicative linguistic preference relations.An unbalanced multiplicative linguistic label set is introduced,which can be used by the experts to express... Group decision making problems are investigated with uncertain multiplicative linguistic preference relations.An unbalanced multiplicative linguistic label set is introduced,which can be used by the experts to express their linguistic preference information over alternatives.The uncertain linguistic weighted geometric mean operator is utilized to aggregate all the individual uncertain multiplicative linguistic preference relations into a collective one,and then a simple approach is developed to determine the experts' weights by utilizing the consensus degrees among the individual uncertain multiplicative linguistic preference relations and the collective uncertain multiplicative linguistic preference relations.Furthermore,a practical interactive procedure for group decision making is proposed based on uncertain multiplicative linguistic preference relations,in which a possibility degree formula and a complementary matrix are used to rank the given alternatives.Finally,the proposed procedure is applied to solve the group decision making problem of a manufacturing company searching the best global supplier for one of its most critical parts used in assembling process. 展开更多
关键词 group decision making uncertain multiplicative linguistic preference relations unbalanced multiplicative linguistic label set consensus degree interaction.
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Pythagorean Uncertain Linguistic Variable Hamy Mean Operator and Its Application to Multi-attribute Group Decision Making 被引量:2
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作者 Huidong Wang Shifan He +1 位作者 Chengdong Li Xiaohong Pan 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2019年第2期527-539,共13页
Pythagorean fuzzy set(PFS) can provide more flexibility than intuitionistic fuzzy set(IFS) for handling uncertain information, and PFS has been increasingly used in multi-attribute decision making problems. This paper... Pythagorean fuzzy set(PFS) can provide more flexibility than intuitionistic fuzzy set(IFS) for handling uncertain information, and PFS has been increasingly used in multi-attribute decision making problems. This paper proposes a new multiattribute group decision making method based on Pythagorean uncertain linguistic variable Hamy mean(PULVHM) operator and VIKOR method. Firstly, we define operation rules and a new aggregation operator of Pythagorean uncertain linguistic variable(PULV) and explore some properties of the operator.Secondly, taking the decision makers' hesitation degree into account, a new score function is defined, and we further develop a new group decision making approach integrated with VIKOR method. Finally, an investment example is demonstrated to elaborate the validity of the proposed method. Sensibility analysis and comprehensive comparisons with another two methods are performed to show the stability and advantage of our method. 展开更多
关键词 Hamy mean(HM) OPERATOR MULTI-ATTRIBUTE group decision making(MAGDM) PYTHAGOREAN fuzzy set PYTHAGOREAN uncertain LINGUISTIC variable
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Some interval-valued intuitionistic uncertain linguistic hybrid Shapley operators 被引量:1
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作者 Fanyong Meng Chunqiao Tan Qiang Zhang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2014年第3期452-463,共12页
Two interval-valued intuitionistic uncertain linguistic hybrid operators cal ed the induced interval-valued intuitionistic uncertain linguistic hybrid Shapley averaging (I-IIULHSA) operator and the induced interval-... Two interval-valued intuitionistic uncertain linguistic hybrid operators cal ed the induced interval-valued intuitionistic uncertain linguistic hybrid Shapley averaging (I-IIULHSA) operator and the induced interval-valued intuitionistic uncertain linguistic hybrid Shapley geometric (I-IIULHSG) operator are defined. These operators not only reflect the importance of elements and their ordered positions, but also consider the correlations among elements and their ordered positions. Since the fuzzy measures are defined on the power set, it makes the problem exponentially complex. In order to simplify the complexity of solving a fuzzy measure, we further define the induced interval-valued intuitionistic uncertain linguistic hybrid λ-Shapley averaging (I-IIULHλSA) operator and the induced interval-valued intuitionistic uncertain linguistic hybrid λ-Shapley geometric (I-IIULHλSG) operator. Moreover, an approach for multi-attribute group decision making under the interval-valued intuitionistic uncertain linguistic environment is developed. Finally, a numerical example is provided to verify the developed procedure and demonstrate its practicality and feasibility. 展开更多
关键词 multi-attribute group decision making interval-valued intuitionistic uncertain linguistic set hybrid operator Shapley function.
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Group Decision Making With Consistency of Intuitionistic Fuzzy Preference Relations Under Uncertainty 被引量:1
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作者 Yang Lin Yingming Wang 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2018年第3期741-748,共8页
Intuitionistic fuzzy preference relation(IFPR) is a suitable technique to express fuzzy preference information by decision makers(DMs). This paper aims to provide a group decision making method where DMs use the IFPRs... Intuitionistic fuzzy preference relation(IFPR) is a suitable technique to express fuzzy preference information by decision makers(DMs). This paper aims to provide a group decision making method where DMs use the IFPRs to indicate their preferences with uncertain weights. To begin with, a model to derive weight vectors of alternatives from IFPRs based on multiplicative consistency is presented. Specifically, for any IFPR,by minimizing its absolute deviation from the corresponding consistent IFPR, the weight vectors are generated. Secondly,a method to determine relative weights of DMs depending on preference information is developed. After that we prioritize alternatives based on the obtained weights considering the risk preference of DMs. Finally, this approach is applied to the problem of technical risks assessment of armored equipment to illustrate the applicability and superiority of the proposed method. 展开更多
关键词 Group decision making(GDM) intuitionistic fuzzy preference relation(IFPR) intuitionistic fuzzy set(IFS) multiplicative consistency risk preference uncertain weights
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Adjustment Model and Algorithm Based on Ellipsoid Uncertainty 被引量:8
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作者 Yingchun SONG Yuguo XIA Xuemei XIE 《Journal of Geodesy and Geoinformation Science》 2020年第3期59-66,共8页
In surveying adjustment models,there is usually some uncertain additional information or prior information on parameters,which can constrain the parameters,and guarantee the uniqueness and stability of parameter solut... In surveying adjustment models,there is usually some uncertain additional information or prior information on parameters,which can constrain the parameters,and guarantee the uniqueness and stability of parameter solution.In this paper,we firstly use ellipsoidal sets to describe uncertainty,and establish a new adjustment model with ellipsoidal uncertainty.Furthermore,we give a new adjustment criterion based on minimization trace of an outer ellipsoid with two ellipsoid intersections,and analyze the propagation law of uncertainty.Correspondingly,we give a new algorithm for the adjustment model with ellipsoid uncertainty.Finally,we give three examples to test and verify the effectiveness of our algorithm,and illustrate the relation between our result and the weighted mixed estimation. 展开更多
关键词 uncertain ellipsoid uncertainty constraint adjustment model Ill-posed problem set membership estimation
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MCGDM model using uncertain linguistic consistency sets of single andinterval linguistic term multivalued sets
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作者 Jun Ye 《Journal of Management Analytics》 EI 2022年第3期351-368,共18页
This paper presents hybrid linguistic expressions and operations for the hybridlinguistic multiple criteria group decision making(MCGDM)issue withidentical and/or different single and interval linguistic term values.F... This paper presents hybrid linguistic expressions and operations for the hybridlinguistic multiple criteria group decision making(MCGDM)issue withidentical and/or different single and interval linguistic term values.First,wepropose a single and interval linguistic term multivalued set/element(SILTMS/SILTME)and develop a consistency measure of SILTMEs based on Shannonentropy to measure the consistency degree of single and interval linguistic termvalues in SILTME.Second,we converse SILTMS/SILTME into an uncertainlinguistic consistency set/element(ULCS/ULCE)in terms of the mean andconsistency measure of SILTMEs to reasonably perform operations betweendifferent information forms/sequence lengths in SILTMSs.Third,we definesome operations of ULCEs and the expected values and sorting rules ofULCEs.Fourth,we present the ULCE weighted mean and geometric operatorsand their characteristics.Finally,we develop a MCGDM model using theweighted mean operation of the two operators and apply it in the mine safetyassessment. 展开更多
关键词 Single and interval linguistic term multivalued set uncertain linguistic consistency set uncertain linguistic consistency element weighted aggregation operation Group decision making
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计及多重不确定性的生物质电厂库存优化模型 被引量:1
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作者 张金良 胡泽萍 《中国电力》 CSCD 北大核心 2024年第12期157-168,共12页
生物质电厂库存优化策略的制定是保障区域电力供应的基础,然而生物燃料的季节性和需求的不确定性给库存优化带来了极大的挑战。为降低多类不确定因素对库存优化的影响,提出一种计及多重不确定性的生物质电厂库存随机-鲁棒优化模型。首先... 生物质电厂库存优化策略的制定是保障区域电力供应的基础,然而生物燃料的季节性和需求的不确定性给库存优化带来了极大的挑战。为降低多类不确定因素对库存优化的影响,提出一种计及多重不确定性的生物质电厂库存随机-鲁棒优化模型。首先,使用椭球不确定集描述了生物质燃料价格及质量水平的不确定性,并利用情景树法构建典型生物质可用性场景,降低燃料供应季节性对库存策略制定的影响。其次,考虑误差的随机性和模糊性,利用生态云发生器模拟了3种用户的负荷曲线,提高了需求曲线拟合的准确性。最后,以库存总成本最小为目标,建立计及多重不确定性的生物质电厂库存随机-鲁棒优化模型,并通过算例对比确定型、随机和随机-鲁棒3类优化模型的优化结果,验证模型的有效性。结果表明:随机-鲁棒优化模型的生物质电厂库存总成本最低,为269.15万元。相比随机优化模型,所提策略的库存总成本降低了34.59%,能够提升库存优化策略的经济性和可靠性。 展开更多
关键词 随机-鲁棒优化 椭球式不确定集 正态云模型 生物质电厂 库存优化
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特定类的代价敏感近似属性约简 被引量:1
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作者 胡军 黄小涵 《智能系统学报》 CSCD 北大核心 2024年第6期1468-1478,共11页
特定类属性约简指针对特定决策类提供对应约简集的属性约简,现有特定类属性约简方法过于严苛,限制其在一些场景下的应用。针对存在噪声的数据,提出一种特定类的代价敏感近似属性约简方法。该方法首先结合正域与边界域信息定义特定类的... 特定类属性约简指针对特定决策类提供对应约简集的属性约简,现有特定类属性约简方法过于严苛,限制其在一些场景下的应用。针对存在噪声的数据,提出一种特定类的代价敏感近似属性约简方法。该方法首先结合正域与边界域信息定义特定类的相对不确定度,然后利用相对不确定度与测试代价计算属性重要度,进而根据属性重要度选择属性,并通过放松相对不确定度来避免冗余属性的加入,最后给出了特定类的代价敏感近似启发式属性约简算法。实验结果表明,所提方法与同类方法相比能够在保持甚至提升约简质量的同时获得更精简的约简集,并且约简集的测试代价相对更小。 展开更多
关键词 粗糙集 不确定信息 特定类 相对不确定度 属性重要度 测试代价敏感 近似属性约简 启发式算法
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计及源荷互补特性的“源网荷储一体化项目”优化配置 被引量:8
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作者 孟旭瑶 付立军 +3 位作者 赖心怡 孙亚璐 杨昌海 文福拴 《电力自动化设备》 EI CSCD 北大核心 2024年第7期123-131,共9页
针对“源网荷储一体化项目”(后简称一体化项目)在风光消纳率、清洁用电率等方面的建设要求,提出了计及源荷互补特性的一体化项目优化配置方法。基于包含风光发电制氢负荷、可平移工业负荷、电动汽车快充站的一体化项目拓扑,建立了一体... 针对“源网荷储一体化项目”(后简称一体化项目)在风光消纳率、清洁用电率等方面的建设要求,提出了计及源荷互补特性的一体化项目优化配置方法。基于包含风光发电制氢负荷、可平移工业负荷、电动汽车快充站的一体化项目拓扑,建立了一体化项目内部的多类型负荷用电功率模型。提出基于分时Copula函数生成时序一致的风光联合出力场景集的方法,进而提出分为风光额定功率配比优化、容量配置优化、负荷接入位置优化三阶段的一体化项目优化配置方法。通过算例分析对所提方法的可行性和有效性进行仿真验证。 展开更多
关键词 “源网荷储一体化项目” 源荷互补特性 不确定集 优化配置 负荷选址
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面向新能源高渗透系统调峰和调频的系统级储能容量需求分析 被引量:6
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作者 王森 李凤婷 +2 位作者 张高航 尹纯亚 李源 《电力自动化设备》 EI CSCD 北大核心 2024年第1期24-31,共8页
高渗透新能源的强不确定性及火电机组占比的逐步减小使得系统灵活性资源不足,系统级储能可高效缓解系统的调峰和调频压力。为此,从系统角度提出了一种面向新能源高渗透系统调峰和调频的系统级储能需求容量确定方法。基于分位数回归分析... 高渗透新能源的强不确定性及火电机组占比的逐步减小使得系统灵活性资源不足,系统级储能可高效缓解系统的调峰和调频压力。为此,从系统角度提出了一种面向新能源高渗透系统调峰和调频的系统级储能需求容量确定方法。基于分位数回归分析和高斯混合模型聚类,提出了一种刻画净负荷不确定性的场景集生成方法;基于生成的场景集,建立了一种无储能容量约束的常规火电机组与储能联合优化运行模型,以获取最优运行时储能参与调峰和调频的功率;为了同时兼顾储能利用率和系统运行成本,构建了基于储能电量偏离程度、运行成本增长率指标的储能功率修正模型,并确定储能需求功率和容量,进而分析新能源渗透率、储能功率和容量与满足需求的置信度水平三者之间的关系。算例仿真结果表明,所提方法能够有效确定新能源高渗透系统调峰和调频对储能的需求容量。 展开更多
关键词 高渗透新能源 储能系统 分位数回归分析 不确定场景集 调峰 调频 联合优化
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基于区间概率不确定集的微电网两阶段自适应鲁棒优化调度 被引量:20
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作者 王灿 张雪菲 +6 位作者 凌凯 席磊 陈然 王傲奇 褚四虎 田福银 李欣然 《中国电机工程学报》 EI CSCD 北大核心 2024年第5期1750-1763,I0007,共15页
光伏出力的随机性和负荷用电的波动性对微电网的优化调度影响显著,为此提出了预测-调节-决策一体化的策略框架。基于高斯过程回归(Gaussian process regression,GPR)将光伏出力和负荷用电典型日历史数据自适应生成的置信区间与鲁棒优化... 光伏出力的随机性和负荷用电的波动性对微电网的优化调度影响显著,为此提出了预测-调节-决策一体化的策略框架。基于高斯过程回归(Gaussian process regression,GPR)将光伏出力和负荷用电典型日历史数据自适应生成的置信区间与鲁棒优化中不确定集的构建相结合,建立了基于区间概率不确定集的自适应鲁棒优化调度模型。首先,通过GPR生成自适应鲁棒优化调度模型中不确定集的固定项,然后调节决策环节所考虑的风险水平以确定不确定集中的波动项,进而确定衡量不同调度保守度下的不确定集边界;接着采用预测区间质量评测指标来考核各个不确定集所对应的区间优劣。最后,通过改进的IEEE-37节点微电网系统验证了所提模型在有效抵御光伏出力和负荷用电波动的同时保持较低的运行成本。 展开更多
关键词 微电网 风险水平 置信区间 不确定集 鲁棒优化
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基于SVC的电动汽车集群并网鲁棒优化调度模型 被引量:4
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作者 李宏胜 李鵾 +3 位作者 汪洋 高菲 张瑜 谢宏福 《高电压技术》 EI CAS CSCD 北大核心 2024年第1期386-393,共8页
针对电动汽车(electric vehicle,EV)入网时长和荷电状态(state of charge,SOC)的不确定性,提出基于支持向量聚类(support vector clustering,SVC)的电动汽车集群并网鲁棒优化调度模型。以EV的充放电功率作为决策变量,用户最小充电成本... 针对电动汽车(electric vehicle,EV)入网时长和荷电状态(state of charge,SOC)的不确定性,提出基于支持向量聚类(support vector clustering,SVC)的电动汽车集群并网鲁棒优化调度模型。以EV的充放电功率作为决策变量,用户最小充电成本为目标函数,建立集群EV调度模型。利用EV历史充电数据,以包含所有样本数据的最小超球体作为不确定集形状,将广义直方图交叉核作为核函数,计算EV入网时间和充电时长参数的不确定集,建立基于SVC的集群EV鲁棒优化调度模型。算例分析结果表明,所提方法能更准确地描述EV充电的不确定性参数,所提模型在保证经济性的同时能迅速响应分时电价,具有较好的实用性。 展开更多
关键词 电动汽车 不确定集 入网时长 荷电状态 支持向量聚类 鲁棒优化
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基于在线文本评论的损失厌恶型顾客产品推荐研究 被引量:2
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作者 胡礼梅 《运筹与管理》 CSSCI CSCD 北大核心 2024年第11期175-181,共7页
COVID-19对全球经济和金融活动产生了深远影响,推动了消费者在线购物需求激增和电商平台业务量飙升。在线评论信息作为消费者辨别产品质量和商家信誉的关键途径,对购买决策有直接影响。与用户等级评分相比,在线文本评论更能精准地表达... COVID-19对全球经济和金融活动产生了深远影响,推动了消费者在线购物需求激增和电商平台业务量飙升。在线评论信息作为消费者辨别产品质量和商家信誉的关键途径,对购买决策有直接影响。与用户等级评分相比,在线文本评论更能精准地表达产品情感偏好,本文由此提出基于在线文本评论考虑顾客损失厌恶心理的产品推荐模型。首先,引入信度结构,充分发挥其强大的不确定信息处理能力,转化文本评论信息中的情感偏好,并基于证据距离公式测算相似性,获取属性权重。其次,为高效处理不确定概率语言问题,依据信度结构的可信度函数和似真度函数转化评价信息,获取不确定概率语言评价矩阵。进而,将广义TODIM方法拓展到不确定概率语言环境中,构造有效刻画顾客损失厌恶行为特征的产品推荐方法。最后,通过实例应用、灵敏度分析和对比分析,进一步验证了所提推荐模型的实践性和有效性。 展开更多
关键词 在线文本评论 信度结构 不确定概率语言术语集 广义TODIM方法 产品推荐
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