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wireless remote spatiotemporal monitoring of high-fill foundation deformation

Journal of Mountain Science 2023年第6期20卷 1620-1638页

作者： YANG Xiao-hui LI Zhi-qian ZHU Yan-peng GUO Nan School of Civil Engineering Lanzhou University of TechnologyLanzhou 730050China Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education Lanzhou University of TechnologyLanzhou 730050China

The spatial and temporal deformation patterns and deformation control indicators of highfill foundations directly affect the design,construction and operational safety of high-fill *** situ monitoring can comprehensively reflect the deformation of high-fill during and after *** this paper,we have first designed and installed an integrated wireless remote monitoring system for high-fill to achieve real-time dynamic monitoring of settlement,pore water pressure and soil pressure of the fill *** on the monitoring results of nearly one year of the construction period and two years after construction,it was found that the deformation amount and deformation rate of the high-fill foundation showed a non-linear growth relationship with the filling rate and filling *** settlement deformation of the high-fill foundation during the loading period was mainly dominated by the original foundation soil,accounting for 54.4%of the total settlement on average;the settlement deformation during the post-construction period was mainly dominated by the filling body,accounting for 77.04%of the total settlement on average,and the settlement deformation during the post-construction period mainly occurred in the first year after *** analysis of the deformation mechanism suggests that the deformation of the filling body is dominated by exhaust consolidation during the loading period and drainage consolidation during the post-construction period;the deformation of the original foundation soil is dominated by drainage consolidation during the loading period and drainage consolidation develops slowly during the post-construction *** is recommended that the original foundation should be reinforced before the large area filling construction,and that the filling rate should be strictly controlled during *** research results can provide a scientific basis for deformation calculation and stability assessment of high-fill foundatio

关键词： High-fill engineering wireless remote monitoring Foundation deformation Spatiotemporal law Settlement after construction

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A Typical Review on Static Reconfiguration Strategies in Photovoltaic Array Under Non-Uniform Shading Conditions

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CSEE Journal of Power and Energy Systems 2023年第6期9卷 2018-2039页

作者： Chavan Vinaya Chandrakant Suresh Mikkili Department of Electrical and Electronics Engineering National Institute of Technology GoaIndia

Maximum power extraction from the photovoltaic(PV) system plays a critical role in increasing efficiency duringpartial shading conditions (PSCs). It directly reduces the outputpower of the PV array. There are different factors, such as bypassdiode configuration, array size, array configuration, shade intensity, environmental conditions etc., affecting the performance ofthe solar photovoltaic panel. Furthermore, series (S), parallel (P),series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL),and honey-comb (HC), etc., are the various configurations to dealwith the mentioned issues. But these PV array configurations alsohave drawbacks, such as low dispersion factor, mismatch losses,and line losses under partial shading conditions. To overcomethese issues, the reconfiguration of the PV array is one of theeffective approaches. A comprehensive study of literature showsthat PV modules are connected under different reconfiguredschemes namely Sudoku, Optimal Sudoku, Magic square, zigzag, Skyscraper, etc. In this paper, a comprehensive review isperformed to highlight the advantages and limitations of eachscheme. This study can be used to address the advancementin this area since some parameter comparisons are made at theend of every technique, which might be a prominent base-rule forpicking the most promising reconfiguration technique for furtherresearch.

关键词： Data visualization fault diagnosis IoT network photovoltaic system wireless remote monitoring

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A Transactive Energy Model for Smart Metering Systems Using Blockchain

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CSEE Journal of Power and Energy Systems 2021年第5期7卷 943-953页

作者： Juan C.Olivares-Rojas Enrique Reyes-Archundia Jose A.Gutierrez-Gnecchi Ismael Molina-Moreno Jaime Cerda-Jacobo Arturo Mendez-Patino National Technological Institute of Mexico/Technological Institute of Morelia-Division of Graduate Studies and Research MoreliaMichoacan 58120Mexico. School of Electrical Engineering Michoacan University of San Nicolas de HidalgoMorelia 58030.Mexico

The lowering cost of electricity generation technologies by renewable means has caused the role of end-users to change from being a simple consumer to a producer of their *** new role has been called a prosumer and has contributed to modifying electricity markets,by allowing prosumers to merchandize the energy surplus to electricity companies and other *** fundamental key to any economic transaction is trust between the ***,new technologies,such as blockchain,are transforming transaction security,and allowing decentralization of the smart power *** study presents the development of a transactional model of electrical energy using the infrastructure of smart metering and blockchain systems to allow the commercialization of electrical energy by *** results show that for the Mexican electricity market,they can he good alternatives hy reducing subsidies and being more profitable than current rates.

关键词： Data visualization fault diagnosis IoT network photovoltaic system wireless remote monitoring

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A Real-time monitoring System Based on ZigBee and 4G Communications for Photovoltaic Generation

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CSEE Journal of Power and Energy Systems 2020年第1期6卷 52-63页

作者： Kun Xia Jiawen Ni Yanhong Ye Po Xu Yiming Wang University of Shanghai for Science and Technology Shanghai 200093China Ningbo Ginlong New Energy Tech Corporation Zhejiang 315712China

A novel real-time monitoring system for photovoltaic(PV)generation is presented in this *** of Things(IoT)integrated with cloud servers and terminal applications allow the remote monitoring of centralized or distributed pho-tovoltaic *** proposed system could realize the net-working communication of multiple nodes based on ZigBee,and upload the operational data to the cloud server via a 4G communications ***,the server selects three-phase current as the sample sets from the uploaded data to set up a composite current characteristic combining wavelet packet en-ergy with waveform parameter,and establishes a fault diagnosis model based on the probabilistic neural network to analyze the health status of the PV inverter *** method requires little sampling frequency without an extra signal and saves the cost of local devices by placing online diagnostics on the *** addition,the user could query and store the running information of the PV systems through the personal computer-side web or mobile phone with remote *** article presents the hardware design of ZigBee and the 4G module,and composition of the diagnosis model for open circuit failure of the PV inverter through the cloud server,building the user software at the application *** final experimental results show that the proposed system has better communication performance and higher diagnostic accuracy in real-time monitoring.

关键词： Data visualization fault diagnosis IoT network photovoltaic system wireless remote monitoring

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