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Voltage Security Operation Region Calculation Based on Improved Particle Swarm Optimization and Recursive Least Square Hybrid Algorithm

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Journal of Modern Power Systems and Clean Energy 2021年第1期9卷 138-147页

作者： Saniye Maihemuti Weiqing Wang Haiyun Wang jiahui wu Xinjiang University UrumqiChina

Large-scale voltage collapse incidences, which result in power outages over large regions and extensive economic losses, are presently common occurrences worldwide. To avoid voltage collapse and operate more safely and reliably, it is necessary to analyze the voltage security operation region(VSOR) of power systems, which has become a topic of increasing interest lately. In this paper, a novel improved particle swarm optimization and recursive least square(IPSO-RLS) hybrid algorithm is proposed to determine the VSOR of a power system. Also, stability analysis on the proposed algorithm is carried out by analyzing the errors and convergence accuracy of the obtained results. Firstly, the voltage stability and VSOR-surface of a power system are analyzed in this paper. Secondly, the two algorithms,namely IPSO and RLS algorithms, are studied *** on this understanding, a novel IPSO-RLS hybrid algorithm is proposed to optimize the active and reactive power,and the voltage allowed to identify the VSOR-surface accurately. Finally, the proposed algorithm is validated by using a simulation case study on three wind farm regions of actual Hami Power Grid of China in DIg SILENT/Power Factory *** error and accuracy of the obtained simulation results are analyzed and compared with those of the particle swarm optimization(PSO), IPSO and IPSO-RLS hybrid algorithms.

关键词： Voltage stability renewable energy improved particle swarm optimization(IPSO) recursive least square(RLS) voltage security operation region(VSOR)

Performance evaluation for sustainability of wind energy project using improved multi-criteria decision-making method

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Journal of Modern Power Systems and Clean Energy 2019年第5期7卷 1165-1176页

作者： jiahui wu Haiyun WANG Weiqing WANG Qiang ZHANG College of Electrical Engineering Xinjiang UniversityUrumqi 830047China State Grid Xinjiang Electric Power Research Institute Urumqi 830011China

Wind power can be an efficient way to alleviate energy shortage and environmental pollution,and to realize sustainable development in terms of energy *** sustainability assessment of a wind project among its alternatives is a complex task that cannot be solely simplified to environmental or economic *** requires the consideration of its technological and social aspects as well as other *** paper proposes a new method for selecting the most sustainable wind *** method is based on multi-criteria decision-making *** analytic hierarchy process and entropy weight method are combined to determine the weights of evaluation indexes,and an innovative index-weight optimization method based on the Lagrange conditional extremum *** fuzzy technique for order preference by similarity to the ideal solution is applied to rank wind project alternatives considering functionality and proportionality of the ***,the sensitive analysis is applied to verify the robustness of the proposed *** applicability of the method is demonstrated on a case study from China,where three main wind projects are analytically compared and *** results indicated that the sustainable level of calculated wind power can provide a reference point for the planning and operation of the wind *** results show that the proposed method is of both theoretical significance and practical application in engineering.

关键词： Analytic hierarchy process Comprehensive evaluation index Entropy method Fuzzy technique Order preference Wind power sustainability level

Agent-based dynamic simulation of an electricity market with multilateral bidding

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第3期10卷 15-27页

作者： jiahui wu Jidong Wang Yuanyuan Yan Key Laboratory of the Ministry of Education on Smart Power Grids Tianjin University Tianjin 300072P.R.China Department of Automation Tsinghua University Beijing 100084P.R.China

The electricity market is a complex system in which participants interact and compete with each other,which makes description of them with mathematical models *** solve these difficulties,computer simulation has become one of the main methods for studying electricity market *** to establish a reasonable electricity market has always been a major research issue in the electric power industry,for which a key point is the bidding ***-based modeling and a simulation(ABMS)method are used in this paper to study the imperfect competitive electricity *** agent-based simulation method of multilateral bargaining game theory in the dynamics of the power bidding market is presented,and a multi-agent power market bidding dynamics simulation model based on game theory is *** dynamic bidding game behavior among the government,power grid companies,power plant companies,and consumer parties is simulated in the market,and the simulation method is realized by Anylogic ***,an agent-based four-party competitive dynamic game simulation in the electricity market is implemented,which provides a theoretical reference for further understanding resource optimization problems in the electricity market.

关键词： Agent-based simulation electricity market game theory

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神经架构搜索技术研究综述

计算机应用研究 2025年第1期42卷 11-18页

作者：武家辉李科研陈丽新张家诺刘帅兵逯鹏郑州大学电气与信息工程学院郑州450001 机器人感知与控制河南省工程实验室郑州450001 中医药智能科学与工程技术研究中心郑州450001

神经架构搜索(NAS)的目的是为特定任务自动寻优生成高性能网络架构,从而减少架构设计对专家经验的依赖和架构设计过程中的人力资源消耗,其主要包含搜索空间、搜索策略和评估策略三个组成部分。早期NAS需要多个GPU耗时多天完成搜索,搜索... 详细信息

神经架构搜索(NAS)的目的是为特定任务自动寻优生成高性能网络架构,从而减少架构设计对专家经验的依赖和架构设计过程中的人力资源消耗,其主要包含搜索空间、搜索策略和评估策略三个组成部分。早期NAS需要多个GPU耗时多天完成搜索,搜索耗时和计算成本高是NAS的核心问题。为帮助研究人员快速、全面地了解NAS领域,提供了一种新的视角对现有NAS工作进行梳理。首先对NAS的早期工作进行分析,并阐述了NAS的核心问题及其产生原因;然后围绕解决NAS核心问题的三类方法,即减小架构搜索范围、减少待评估架构搜索时间、减少架构评估时间,对该领域算法进行针对性分析、对比、总结;最后归纳总结该领域后续的主要研究方向。

关键词：神经架构搜索搜索范围搜索时间评估时间

Simultaneous photoelectrochemical detection of dual microRNAs by capturing CdS quantum dots and methylene blue based on target-initiated strand displaced amplification

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Chinese Chemical Letters 2021年第2期32卷 775-778页

作者： Jiafu Chang Wenxin Lv jiahui wu Haiyin Li Feng Li College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJi'nan 250014China

Herein,we propose a novel photoelectrochemical(PEC) biosensor for dual microRNAs(miRNAs) highly sensitive and simultaneous biosensing based on strand displaced amplification(SDA) *** recognition of HmiR-21 and Hlet-7 a by microRNA-21 and let-7 a leads to their change in hairpin structures,subsequently initiating the immobilization of abundant CdS quantum dots(CdS QD s) and methylene blue(MB) based on SDA *** immobilized CdS QDs and MB produce both high PEC currents under430 nm light and 627 nm light illumination,respectively,and the generated PEC currents are closely relied on target miRNAs ***,highly sensitive and simultaneous detection of microRNA-21 and let-7 a was readily achieved with detection limit at 6.6 fmol/L and 15.4 fmol/L based on 3σ,***,this PEC biosensor was applied in simultaneous analysis of miRNA-21 and let-7 a in breast cancer patient’s serum with acceptable *** expect this biosensor will find more useful application in diagnosis of miRNA-related diseases.

关键词： PEC CdS QDs Methylene blue Multiple microRNAs Strand displaced amplification Simultaneous biosensing

双光纤光栅级联Sagnac环多波长滤波系统研究

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光电子·激光 2025年第1期36卷 9-16页

作者：王翀伊依吴嘉辉宋坤周梦婷李苗苗西安邮电大学电子工程学院

为了实现可调谐的高精度滤波并扩大通信容量，本文设计了一种创新的滤波器系统方案，采用了双光纤布拉格光栅级联和Sagnac环的结合。该方案经过Jones矩阵理论的深入分析和数值仿真验证。在波长范围为1 554—1 570 nm的频带范围内，通过... 详细信息

为了实现可调谐的高精度滤波并扩大通信容量，本文设计了一种创新的滤波器系统方案，采用了双光纤布拉格光栅级联和Sagnac环的结合。该方案经过Jones矩阵理论的深入分析和数值仿真验证。在波长范围为1 554—1 570 nm的频带范围内，通过调整光纤臂长差来引入Sagnac相移，从而实现了可调谐性。此设计不仅增加了滤波通道数目，而且减小了半高全宽。值得注意的是，在相同的臂长差条件下，此系统相较于单个光纤光栅和Sagnac环的滤波器，精度有了显著提高。在功率损耗为8 dB的情况下，此滤波器系统允许高达196 nm的臂长误差容限，同时提供更为精确的透射谱，实现调谐更加简便。此滤波器系统具备易实现性，广泛适用于密集波分复用系统以及光通信等领域。

关键词：双光纤布拉格光栅级联 Sagnac环臂长误差可调谐

pH and H2O2 dual-responsive carbon dots for biocatalytic transformation monitoring

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Chinese Chemical Letters 2019年第9期30卷 1635-1638页

作者： Wenxin Lv Xin Wang jiahui wu Haiyin Li Feng Li College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University

Development of sensitive biosensors for biocatalytic transformations monitoring is in high demand but remains a great challenge. It is ascribed to the current strategies that focused on the single metabolite detection, which may bring about the relatively low sensitivity and false diagnosis result. Herein, we report the design and fabrication of novel carbon dots(CDs) with strong orange light emission, pH and H2O2 dual-responsive characteristics. The fluorescence quenching of CDs by H+and H2O2 enables the highly sensitive detection of H+/H2O2-generating biocatalytic transformations. This is exemplified by the glucose oxidase-mediated catalytic oxidation reaction on glucose, in which H+and H2O2 would be formed. As compared to the case in which glucose is present, significant fluorescence reduction is detected, and the fluorescence intensity is negatively proportional to glucose concentration. Thus, highly sensitive detection of glucose was readily achieved with a detection limit down to 10.18 nmol/L. The prepared CDs not only realize the highly sensitive detection of glucose, but also allows the probing other substances by changing the enzymes, thus providing a versatile platform, and demonstrating good potential to be used for biocatalytic transformations effective monitoring.

关键词： Carbon dots Dual-responsive pH H2O2 Glucose Biocatalytic transformations

Basic theories and development of Miao medicine

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Journal of Traditional Chinese Medical Sciences 2021年第S1期8卷 22-26页

作者： Minke Tang Linglong Luo Chi Zhang jiahui wu Xueyong Wang School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing102488China International Exchange and Cooperation Department Beijing University of Chinese MedicineBeijing100029China

Miao is an important ethnic minority in *** medicine(MM)is a pivotal of traditional Chinese *** is an accumulation of the Miao people's experience fighting against diseases for thousands of years and has been an important part of the Miao *** origin of MM is closely related to Miao culture,customs,and *** gradually formed a traditional medical theoretical system with obvious regional characteristics,distinctive cultural characteristics,and unique *** this paper,we intro-duce and review the unique theoretical system of MM,including the basic theory of MM,the theory of medicine,nature,taste,and channel tropism,and the theory of entering the *** addition,we summarize the development of MM to provide an overview of the theoretical characteristics and industrialisation of MM that is accessible to everyone.

关键词： Miao medicine History Three elements Theory of two principles Eight flavors

Recent developments of neuroprotective agents for degenerative retinal disorders

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Neural Regeneration Research 2022年第9期17卷 1919-1928页

作者： Kepeng Ou Youjian Li Ling Liu Hua Li Katherine Cox jiahui wu Jian Liu Andrew D.Dick College of Pharmacy National&Local Joint Engineering Research Center of Targeted and Innovative TherapeuticsIATTIChongqing University of Arts and SciencesChongqingChina Translational Health Sciences Bristol Medical SchoolUniversity of BristolBristolUK Department of Ophthalmology Yongchuan HospitalChongqing Medical UniversityChongqingChina Department of Ophthalmology Shanghai General Hospital(Shanghai First People’s Hospital)Shanghai Jiao Tong University School of MedicineShanghaiChina Institute of Ophthalmology University College LondonLondonUK National Institute for Health Research Biomedical Research Centre Moorfields Eye HospitalLondonUK

Retinal degeneration is a debilitating ocular complication characterized by the progressive loss of photoreceptors and other retinal neurons,which are caused by a group of retinal diseases affecting various age groups,and increasingly prevalent in the ***-related macular degeneration,diabetic retinopathy and glaucoma are among the most common complex degenerative retinal disorders,posing significant public health problems worldwide largely due to the aging society and the lack of effective *** pathoetiologies vary,if left untreated,loss of retinal neurons can result in an acquired degeneration and ultimately severe visual *** of underlined etiology,loss of neurons and supporting cells including retinal pigment epithelium,microvascular endothelium,and glia,converges as the common endpoint of retinal degeneration and therefore discovery or repurposing of therapies to protect retinal neurons directly or indirectly are under intensive *** review overviews recent developments of potential neuroprotectants including neuropeptides,exosomes,mitochondrial-derived peptides,complement inhibitors,senolytics,autophagy enhancers and antioxidants either still experimentally or in clinical *** treatments that possess direct or indirect neuroprotective properties would significantly lift the burden of visual handicap.

关键词： antioxidants autophagy enhancers complement inhibitors exosomes neuropeptides neuroprotective agents retinal degeneration senolytics