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co.ductivity characteristics of landslide co.sidering porosity,saturation,temperature and ion co.centration

Journal of Mountain Science 2023年第8期20卷 2133-2148页

作者： XIONG Bo-bo YANG Shi-jie ZHAO Bing-qin LU Xiao-chun TIAN Bin LI Cheng WU Xuan-xuan TU Xiao-long co.lege of Hydraulic and Environmental Engineering China Three Gorges UniversityYichang 443000China co.lege of Civil Engineering and Architecture China Three Gorges UniversityYichang 443000China hubei energy group luotian pingtanyuan pumped storage co. Ltd.Huanggang 438000China

High-density resistivity imaging method is widely used in landslide *** resistivity of rock and soil is closely related to factors,such as porosity,moisture co.tent,saturation and *** this study,the resistivity test was designed to investigate the influence of physical factors and pore solution co.ponents on the resistivity of landslide *** and analytical results find that both moisture co.tent and volumetric water co.tent varies greatly under the same *** different temperatures,soil resistivity exhibits great *** the same temperature,the ion co.centration and species in pore solutions have great influence on soil *** on the test results and grey co.relation analysis,this study established a resistivity model by co.sidering porosity,saturation,temperature and ion *** study lays a foundation for the high-density resistivity method to measure the moisture co.tent of landslides.

关键词： Landslide monitoring High-density resistivity method Pore fluid co.position Resistivity model

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Bionics-Inspired Structure Boosts Drag and Noise Reduction of Rotating Machinery

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Journal of Bionic Engineering 2023年第6期20卷 2797-2813页

作者： Shengnan Tang Yong Zhu Shouqi Yuan Institute of Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang212013China International Shipping Research Institute GongQing Institute of Science and TechnologyJiujiang332020China National Research Center of Pumps Jiangsu UniversityZhenjiang212013JiangsuChina Saurer(Changzhou)Textile Machinery co. LtdChangzhou213200China Leo group co. LtdWenling317500China Wenling Fluid Machinery Technology Institute of Jiangsu University Wenling317525China

As a global co.cern,environmental protection and energy co.servation have attracted significant *** to the large carbon emission of electricity,promoting green and low-carbon transformation of the power industry via the synergistic development of clean energy sources is *** machinery plays a crucial role in pumped storage,hydropower generation,and nuclear power *** by bionics,non-smooth features of creatures in nature have been introduced into the structure design of efficient rotating ***,the co.cept and classification of bionics are ***,the representative applications of non-smooth surface bionic structures in rotating machineries are systematically and co.prehensively reviewed,such as groove structure,pit structure,and other non-smooth ***,co.clusions are drawn and future directions are *** effective design of a bionic structure co.tributes toward noise reduction,drag reduction and efficiency improvement of rotating *** and eco.ogical rotating machinery will remarkably reduce energy co.sumption and co.tribute to the realization of the“double carbon”goal.

关键词： Bionics Rotating machinery Non-smooth surface Pit structure Groove structure

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Sizing optimization for island microgrid with pumped storage system co.sidering demand response

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Journal of Modern Power Systems and Clean energy 2018年第4期6卷 791-801页

作者： Zhaoxia JING Jisong ZHU Rongxing HU School of Electric Power Engineering South China University of Technology Foshan Power Supply Bureau Guangdong Power Grid Co.Ltd.

Currently, small islands are facing an energy supply shortage, which has led to co.siderable *** an island microgrid is a relatively good solution to the problem. However, high investment co.ts restrict its application. In this paper, micro pumped storage(MPS) is used as an energy storage system(ESS) for islands with good geographical co.ditions, and deferrable appliance is treated as the virtual power source which can be used in the planning and operational *** acceptance of demand response(DR) is indicated by the demand response participation degree(DRPD), and a sizing optimization model for co.sidering the demand response of household appliances in an island microgrid is proposed. The particle swarm optimization(PSO) is used to obtain the optimal sizing of all major devices. In addition, the battery storage(BS) scheme is used as the co.trol group. The results of case studies demonstrate that the proposed method is effective, and the DR of deferrable appliances and the application of MPS can significantly reduce island microgrid *** analysis on the total load of the island and the water head of the MPS are co.ducted.

关键词： Demand response Micro pumped storage Battery storage Island microgrid Sizing optimization

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