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Mechanism and control of ground residual deformation over longwall goaf

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中国有色金属学会会刊：英文版 2005年第S1期15卷 76-79页

作者： GUO Guang-li~1, WEI Kuang-ling~2. MU Bin-shan~3, Gao Jing-xiang~1, HE Guo-qing~1 (1. china university of Mining and Technology, Xuzhou 2.1008, china 2. chongqing university, chongqing 400044, china 3. Qiwu Coal Mine, Jining 2.7606, china)

The deformation of rupture rock mass in goaf is the main reason for ground terrene residual deformation. Based on field measurement and similar material simulation, the rupture strata structure and its residual deformation characteristics in the longwall goaf and its overburden are pointed out. On the basis of these achievements, the authors propose the mechanism of strengthening rupture rock mass ground and the control measures of deformation resistant structure. Using the case of main coal building in Xinzhuangzi Coal Processing Plant, this paper introduces the influence of strengthening rupture rock mass and deformation resistant structure.

关键词： abandoned goaf residual deformation rupture rockmass deformation mechanism deformation control

基于模糊网络的非线性不确定系统的迭代学习控制

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信息与控制 2004年第4期33卷 468-471页

作者：杨治平曹长修重庆师范大学现代教育技术系重庆400047 重庆大学自动化学院重庆400044

针对非线性不确定系统 ,为保证受控制系统的响应特性 ,应用模糊网络理论构建了非线性系统的模糊模型 ;基于模糊模型给出了模糊迭代学习控制算法 .实例分析和仿真验证表明 ,所给算法能跟踪系统参数变化 ,并且能自动调整控制增益 ,对于系... 详细信息

针对非线性不确定系统 ,为保证受控制系统的响应特性 ,应用模糊网络理论构建了非线性系统的模糊模型 ;基于模糊模型给出了模糊迭代学习控制算法 .实例分析和仿真验证表明 ,所给算法能跟踪系统参数变化 ,并且能自动调整控制增益 ,对于系统的扰动影响具有鲁棒性。

关键词：非线性系统模糊网络迭代学习控制动态增益鲁棒性

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分析介质顺序输送管流水力瞬变的特征线法

水动力学研究与进展（A辑） 2003年第1期18卷 81-85页

作者：邓松圣蒲家宁廖振方后勤工程学院重庆大学机械工程学院重庆400044 重庆大学机械工程学院

研究了管道内介质顺序输送的水力瞬变过程 ,改进了分析介质顺序输送水力瞬变的特征线法。

关键词：顺序输送管流水力瞬变特征线法

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火箭飞行实时测量数据的小波滤波快速算法

数据采集与处理 2004年第4期19卷 395-400页

作者：樊友平陈允平柴毅黄席樾韩逢庆高波武汉大学电气工程学院武汉430072 重庆大学自动化学院重庆400044 西昌卫星发射中心西昌615000

为充分实现火箭飞行实时测量数据的实时处理功能 ,结合弹道处理的实际 ,给出了一种基于小波方法的实时信号所包含噪声的在线快速识别算法 ,该算法原理简捷 ,易实现 ,计算复杂度较低 ,其时间复杂性为 O(1 ) ;分析了用于火箭飞行测量数据... 详细信息

为充分实现火箭飞行实时测量数据的实时处理功能 ,结合弹道处理的实际 ,给出了一种基于小波方法的实时信号所包含噪声的在线快速识别算法 ,该算法原理简捷 ,易实现 ,计算复杂度较低 ,其时间复杂性为 O(1 ) ;分析了用于火箭飞行测量数据消噪的小波及其阈值的选取原则 ,通过对雷达跟踪测量数据的实际分析和处理 ,就数据是否处于火箭在级间分离段提出了不同的处理方法 ,实践证明无论是滤波后信号的残留噪声还是消耗的时间上小波方法都优于α-β-γ滤波 ,且实现了数据的实时处理功能 ,充分满足了实时性要求。

关键词：数据计算复杂度时间复杂性实时性 α-β-γ滤波小波滤波快速识别算法火箭飞行级间分离

Guest Editorial:Special Section on Battery Energy Storage Systems for Net-zero Power Systems and Markets

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 321-322页

作者： Pierluigi Mancarella Nikos Hatziargyriou chongqing Kang The university of Melbourne MelbourneAustralia The university of Manchester ManchesterUK National Technical university of Athens(NTUA) AthensGreece Tsinghua university BeijingChina IEEE

Battery energy storage technologies have witnessed both dramatic cost reduction and technical evolution in recent *** is leading to widespread deployment of battery energy storage systems(BESSs)worldwide,particularly to support operation of power grids with already deep penetration of *** the development of new battery technologies with different power-to-energy ratios and for various engineering applications,BESSs could play a strategic role towards a net-zero energy *** opportunities are emerging for BESSs to participate in several markets,provide different grid services,and perform“value stacking”,eventually allowing development of new business cases and improved BESS *** configurations that are“behind the meter”,“in front of the meter”,hybrid plants co-located with renewables,and so forth,are only some of the exciting propositions that are being seen in different countries and at different scales,from highly distributed(virtual power plants),to neighbourhood-level(community batteries),to utility scale.

关键词： Battery battery eventually

Communication Resources Allocation for Time Delay Reduction of Frequency Regulation Service in High Renewable Penetrated Power System

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 468-480页

作者： Hongjie He Ning Zhang chongqing Kang Song Ci Fei Teng Goran Strbac State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Department of Electrical and Electronic Engineering Imperial College LondonSW72BULondonU.K

The high renewable penetrated power system has severe frequency regulation *** resources can provide frequency regulation services but are limited by com-munication time *** paper proposes a communication resources allocation model to reduce communication time delay in frequency regulation *** device resources and wireless spectrum resources are allocated to distributed resources when they participate in frequency *** reveal impact of communication resources allocation on time delay reduction and frequency regulation ***,we study communication resources allocation solution in high renewable energy penetrated power *** provide a case study based on the HRP-38 *** show communication time delay decreases distributed resources'ability to provide frequency regulation *** the other hand,allocating more communication resources to distributed resources'communica-tion services improves their frequency regulation *** power systems with renewable energy penetration above 70%,required communications resources are about five times as many as 30%renewable energy penetrated power systems to keep frequency performance the *** Terms-Communication resources allocation,commun-ication time delay,distributed resource,frequency regulation,high renewable energy penetrated power system.

关键词： Communication resources allocation communication time delay distributed resource frequency regulation high renewable energy penetrated power system

Low-Carbon Dispatching for Virtual Power Plant with Aggregated Distributed Energy Storage Considering Spatiotemporal Distribution of Cleanness Value

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 346-358页

作者： Hongchao Gao Tai Jin Guanxiong Wang Qixin Chen chongqing Kang Jingkai Zhu State Key Laboratory of Power System Operation and Control Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Sichuan Energy Internet Research Institute Tsinghua university Chengdu 200016China Power Dispatching and Control Center of Shanghai Municipal Electric Power Company Shanghai 200122China IEEE

The scale of distributed energy resources is increasing,but imperfect business models and value transmission mechanisms lead to low utilization ratio and poor *** address this issue,the concept of cleanness value of distributed energy storage(DES)is proposed,and the spatiotemporal distribution mechanism is discussed from the perspectives of electrical energy and *** on this,an evaluation system for the environmental benefits of DES is constructed to balance the interests between the aggregator and the power system ***,an optimal low-carbon dispatching for a virtual power plant(VPP)with aggregated DES is constructed,where-in energy value and cleanness value are both *** achieve the goal,a green attribute labeling method is used to establish a correlation constraint between the nodal carbon potential of the distribution network(DN)and DES behavior,but as a cost,it brings multiple nonlinear ***,a solution method based on the convex envelope(CE)linear re-construction method is proposed for the multivariate nonlinear programming problem,thereby improving solution efficiency and ***,the simulation verification based on the IEEE 33-bus DN is *** simulation results show that the multidimensional value recognition of DES motivates the willingness of resource users to ***,resolving the impact of DES on the nodal carbon potential can effectively alleviate overcompensation of the cleanness value.

关键词： Distributed energy storage virtual power plant(VPP) spatiotemporal distribution low-carbon dispatching

用VB6.0实现西门子PLC与PC机的串行通讯

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微机发展 2003年第A1期13卷 25-26,28页

作者：敬伟樊文侠涂劲西安工业学院电子信息科学与工程系陕西西安710032 重庆大学重庆400044

对西门子系列PLC的通讯协议进行了详细的介绍,并以VB6.0开发系统在WINDOWS环境下实现了PC机与西门子系列PLC之间的串行通讯。文章给出了PLC和VB6.0相关的主要程序,通过该通讯程序实现了PC机对西门子系列PLC的监控和控制。同时本程序对P... 详细信息

对西门子系列PLC的通讯协议进行了详细的介绍,并以VB6.0开发系统在WINDOWS环境下实现了PC机与西门子系列PLC之间的串行通讯。文章给出了PLC和VB6.0相关的主要程序,通过该通讯程序实现了PC机对西门子系列PLC的监控和控制。同时本程序对PC机与其他型号PLC之间的通讯也有一定的借鉴意义。

关键词： VB6.0 程序设计 PLC PC机串行通讯西门子集团

Single-atom Ni-N_(4) for enhanced electrochemical sensing

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Nano Research 2024年第8期17卷 7658-7664页

作者： Zhuhui Qin Bo Tang Guiru Zhang chongqing Zhu Kun Jiang Bowei Zhang Fu-Zhen Xuan Shanghai Key Laboratory of Intelligent Sensing and Detection Technology East China University of Science and TechnologyShanghai 200237China Key Laboratory of Pressure Systems and Safety of Ministry of Education East China University of Science and TechnologyShanghai 200237China School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China Interdisciplinary Research Center School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Single-atom catalysts(SACs)attract widespread attention in heterogeneous catalysis due to their maximum atomic utilization efficiency and unique physical and chemical ***,their applications in chemical sensing keep huge potential but remain ***,a Ni-N_(4)-C SAC was synthesized for the trace detection of dopamine(DA)and uric acid(UA).The Ni-N_(4)-C SAC exhibited superior sensing performance compared to the Ni *** detection range for DA and UA were 0.05–75μM and 5–90μM with detection limits of 0.02. and 0.82.M,*** functional theory(DFT)computations indicate that Ni-N_(4)-C has a lower reaction barrier during electrochemical process,indicating that the atomic Ni sites possess higher intrinsic activity than Ni ***,DA and UA show strong potential dependency on the Ni-N_(4)-C catalyst,indicating its applicability for their concurrent *** work extends the application of SACs in chemical sensing.

关键词： single-atom catalysts chemical sensing dopamine uric acid