检索结果-内蒙古大学图书馆

International Conference on Power Electronics and Drive Systems (PEDS)

作者： Yuan Liqiang Zhao Zhengming Yang Zhi Department of Electrical Engineering State Key Lab of Control and Simulation of Power System Tsinghua University Beijing China Department of Frequency-converter and Control System GuoDian NanJing Automation Company Limited Nanjing China

The power-loss models for different switching states of IGCTs and diodes in MV (medium voltage) three-level NPC (neutral point clamped) inverters are presented in this paper. The models, simulation implementation and the revisional experiments on IGCT test platform are described in details. The relation between the power losses and the other elements of the inverter is analyzed and discussed.

关键词： Diodes Switches Pulse width modulation inverters Power system modeling Medium voltage Variable speed drives Circuits Cooling Pulse width modulation Snubbers

来源：评论

学校读者我要写书评

暂无评论

A VCG Payment Scheme for Energy Storages in the Spot Market Considering Levelized-Cost-of-Storage

A VCG Payment Scheme for Energy Storages in the Spot Market ...

引用

Power and Electrical Engineering (ACPEE), 5th Asia Conference on

作者： Jianing Liu Yue Zhao Zhuo Su Ke Wang Yujun He Power Dispatching and Control Center Guangdong Province Power Grid Co. Ltd Guangzhou China State Key Lab of Control and Simulation of Power Systems and Generation Equipments Tsinghua Univeristy Beijing China

Energy storages are considered as a key solution in the novel energy system with high penetration of renewables. However, the current power markets are not designed for the participation of energy storage as it has a variable cost. This paper investigates an efficient mechanism in which the energy storage submits his levelized cost of storage, then the storage receives a Vickrey-Clark-Grove payment equal to the increase in social welfare attributable to his presence. This mechanism can encourage the storage to truthfully submit the true operating cost and thus help to optimize the system operation. Moreover, the increments of the storage’s own interests and the social welfare are coincidental, so it is incentive compatible. Numerical tests show the advantages of the proposed mechanism over the marginal pricing mechanism.

关键词：

来源：评论

学校读者我要写书评

暂无评论

IEC61850-based information modeling of 126KV intelligent terminals

IEC61850-based information modeling of 126KV intelligent ter...

引用

2011 International Conference on Advanced Power System Automation and Protection, APAP 2011

作者： Zhang, Shu-Jian Wang, Bin Sun, Ming Dong, Xin-Zhou Sun, Tong Cao, Run-Bin Electrical Engineering and Automation Hefei University of Technology Baohe District Hefei 230009 China State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China School of Automation Nanjing University of Science and Technology Nanjing Jiangsu 210094 China

ISBN: (纸本)9781424496198

The stability and reliability of the intelligent terminal's receiving information affects its control of intelligent switch in operation directly. To achieve reliable intelligent communications terminals, with techniques and methods of IEC61850 modeling, the paper completed the 126KVGIS intelligent terminal information model based on the analysis of its information characteristics, and established the hardware platform with data model and logical nodes provided by IEC61850. Thus it has a certain practical significance to promote the standard construction, operation and management of intelligent substation, and lead the digital process of process layer devices. © 2011 IEEE.

关键词： Digital devices

来源：评论

学校读者我要写书评

暂无评论

Traffic Organization Method for Emergency Evacuation Based on Information Centrality

Traffic Organization Method for Emergency Evacuation Based o...

引用

The 2nd IEEE International Conference on Advanced Computer control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Chunqin Zhang Zhengyan Wu Yong-yong Tang Guiyan Jiang Traffic Information Engineering and Control College of Transportation Jilin University ChangchunChi State Key Lab of Automotive Dynamic Simulation College of Automobile Jilin University ChangchunChin

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

Large-scale natural or man-made disasters have the potential to cause great loss of life, human injury and extreme proptrty damage. Evacuation from areas at risk is often one of the most feasible strategies that can be undertaken in response to these types of disasters. Evacuating a large population in the shortest possible time is an extremely complicated and difficult task, which primarily relies on efficient method of traffic organizahon for emergency evacuation comdors. This paper, on the foundation of efficiency and contmgency, puts forward a novel method of emergency evacuation traffic organization using information centrality of complex network theory, the characteristic of which integrates a method of emergency evacuation corridors optimization and traffic organization method of emergency evacuahon corridors. In addition, the efficiency function in information centrality has been improved. The experiment results show that the proposed method has rationality and feasibility.

关键词： engineering of communications and transportation system information centrality emergency evacuation traffic organization method

来源：评论

学校读者我要写书评

暂无评论

A comprehensive rule based method for substation topology error identification

引用

Dianwang Jishu/Power System Technology 2012年第5期36卷 166-172页

作者： Wang, Jing Ge, Minhui Sun, Hongbin Li, Qingxin Wu, Wenchuan Guo, Qinglai Zhang, Boming State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China East China Electric Power Dispatch and Control Sub-Center East China Grid Company Limited Huangpu District Shanghai 200002 China

A substation topology error identification method based on comprehensive rules, including rules in different spatial scales such as element level, bay level and voltage level as well as rules in time sequence, is presented. Utilizing the superiority in multi-source, redundancy and rapid measurement in the substation, the multi spatial scale relevant rules of element, bay and voltage level as well as multi time sequence rules are proposed, and concrete implementation approach for such a method is given. The proposed method can improve the ability to identify the topology error, especially ability to identify switches without analog measurement, thus more reliable topological structure can be provided to control centre to improve the reliability of state estimation for the whole power system. Results of simulation and practical application show that the proposed method is effective.

关键词： Topology

来源：评论

学校读者我要写书评

暂无评论

Electrical tree initiation and propagation in silicone rubber under long-term AC aging

Electrical tree initiation and propagation in silicone rubbe...

引用

Conference on Electrical Insulation and Dielectric Phenomena, (CEIDP)

作者： Yunxiao Zhang Yuanxiang Zhou Ling Zhang Ming Chen Xu Zhang Yanchao Sha State Key Lab of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing Beijing CN State Key Lab of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing China North China Electric Power Research Institute Co Ltd Beijing Beijing CN North China Electric Power Research Institute Co Ltd. Beijing China

Electrical tree break-down is the major failure problem in cable accessories, however, mechanisms of the electrical tree initiation and propagation are still lack of deeply research, especially in silicone rubber (SIR) which is widely used as insulation material for cable accessories. Long-term aging (0- 1000 h) experiments under the different voltages were conducted to observe electrical tree initiation and propagation processes. In trees initiation stage, with increasing of applied voltage, electrical tree initiation probability becomes larger, while tree initiation time dramatically decreases. The experiment observations demonstrated four shapes of trees which are dominated. As applied voltage increasing, the numbers of electrical trees life-cycles increased and exponential relationship was found between tree length and magnitude of applied voltage. It is noted that charges, whose energy exceeding a certain critical value, destroy microstructure of dielectric accumulatively via injection and extraction, and cause electrical trees initiate when it accumulates to a visible extent.

关键词： Electrodes Aging Power cables Electric fields Needles Power cable insulation

来源：评论

学校读者我要写书评

暂无评论

Temporal and spatial variation in the environmental impacts of China’s resource extraction at the provincial scale

引用

Ecosystem Health and Sustainability 2020年第1期6卷 631-646,630页

作者： He-Ming Wang Yao Wei Shen Zhao Guang-Xin Liu Fengmei Ma Guo-Qiang Wang Yao Wang Xin-Zhe Wang Dong Yang Jing-Ru Liu Hong-Tao Wang Feng Shi Wei-Qiang Chen State Environmental Protection Key Laboratory of Eco-Industry Northeastern UniversityShenyangChina Land and Water Commonwealth Scientific and Industrial Research Organisation(CSIRO)CanberraAustralia Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of ScienceXiamenChina State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina College of Economics and Management Shenyang Agricultural UniversityShenyangChina Institute of Science and Technology for Development of Shandong Qilu University of Technology(Shandong Academy of Sciences)JinanChina Research Centre for Eco-Environmental Sciences Chinese Academy of SciencesBeijingChina College of Architecture and Environment Sichuan UniversityChengduChina

Introduction:Over the past two decades,China has experienced rapid economic development,which has not only led to a rapid increase in the use of raw materials but has also created environmental *** research analyzes the environmental impacts of resource extraction in China at the provincial level,and fully considers the environmental impact of various resources *** addition,it is the first time to quantitatively study the spatial pattern and evolution characteristics of the environmental impacts of China’s resource extraction from multiple perspectives by means of spatial ***:The results showed that the center of gravity of abiotic depletion potential(ADP)moved northwest,respiratory inorganics(RI)moved southwest and global warming potential(GWP)moved *** results of the standard deviation ellipse showed that RI and GWP varied over time and space,while ADP showed a discrete *** addition,the distribution of the four in the northeast-southwest direction became more ***:To mitigate the environmental impacts of resource extraction,we recommend that regional governments implement measures to control environmental impacts in the provinces within the distributed ellipse and design targeted policies based on actual conditions.

关键词： Resource extraction MFA environmental impact spatial analysis China

来源：评论

学校读者我要写书评

暂无评论

Study on cooperation of UTCS and UTFGS based on CSCW and Multi Agent

Study on cooperation of UTCS and UTFGS based on CSCW and Mul...

引用

The 2nd IEEE International Conference on Advanced Computer control(第二届先进计算机控制国际会议 ICACC 2010)

作者： Zhaosheng Yang Rui Tian Peng Gao College of Traffic and Transportation & State Key Lab of Automobile Dynamic Simulation Jilin Univers Department of Traffic Info Engineering & Control Nanling Campus of Jilin University Changchun Jilin

ISBN: (纸本)9781424458455;9781424458486;9781424458479;9781424458462

The cooperation of UTCS (Urban Traffic control System) and UTFGS (Urban Traffic Flow Guidance System) performs an important function at alleviating traffic jam,improving urban traffic environment and advancing the street *** it's a complex system,we have to study it with intelligent *** system framework and agent structure based on CSCW and Multi-Agent are discussed after the relationship of them was *** agent was taken as an example to introduce the inherent structure and *** key techniques such as data integration technology,cooperation and share mechanism of information and cooperative control mechanism were *** intelligent collaboration algorithms were put forward,which would realize the intelligent collaboration and optimization of whole control *** methods presented make the cooperation system of UTCS and UTFGS effectively run.

关键词： CSCW Multi-Agent UTCS UTFGS cooperation

来源：评论

学校读者我要写书评

暂无评论

The Method for Evaluating the Reclosing Time of Reclosure Based on Lightning Parameters

The Method for Evaluating the Reclosing Time of Reclosure Ba...

引用

2017 International Conference on Mechanical and Mechatronics Engineering(ICMME2017)

作者： Gun YANG Zhan-qing YU Hong-jun ZHEN Chao SU Shui-ming CHEN Rong ZENG Jin-liang HE State Key Lab.of Control and Simulation of Power Systems and Generation Equipment Department of Electrical EngineeringTsinghua University Qingyuan Power Supply Bureau of Guangdong Grid Company

The fault of transmission line is mostly caused by lightning,and a ground lightning stroke process is often accompanied by multiple *** duration of ground lightning stroke are also *** this paper,a method for evaluating the reclosing time of reclosure based on lightning parameters is *** addition,this paper also gives an expression for the cumulative rate of the duration of ground lightning stroke,and an expression for probability distribution of the amplitude of lightning current in Guangdong *** also proposed a method for calculating the probability of tripping of *** this calculating method,the average probability of tripping of reclosure is less than 1/10000 during a ground lightning stroke process,when the reclosing time t0 is greater than 1.012 s.

关键词： Ground lightning stroke Lightning parameters Reclosing time of reclosure Probability of tripping of reclosure

来源：评论

学校读者我要写书评

暂无评论

Dynamic Trajectory Planning for Vehicle Autonomous Driving

Dynamic Trajectory Planning for Vehicle Autonomous Driving

引用

IEEE International Conference on Systems, Man, and Cybernetics

作者： Sumin Zhang Weiwen Deng Qingrong Zhao Hao Sun Bakhtiar Litkouhi State Key Lab of Automotive Simulation and Control Jilin University Changchun 130025 China General Motors Global R&D Center Warren MI 48090 USA

ISBN: (纸本)9781479906505

Trajectory planning is one of the key and challenging tasks in autonomous driving. This paper proposes a novel method that dynamically plans trajectories, with the aim to achieve quick and safe reaction to the changing driving environment and optimal balance between vehicle performance and driving comfort. With the proposed method, such complex maneuvers can be decomposed into two sub-maneuvers, i.e., lane change and lane keeping, or their combinations, such that the trajectory planning is generalized and simplified, mainly based on lane change maneuvers. A two fold optimization-based method is proposed for stationary trajectory planning as well as dynamic trajectory planning in the presence of a dynamic traffic environment. simulation is conducted to demonstrate the efficiency and effectiveness of the proposed method.

关键词： autonomous driving dynamic trajectory planning vehicle models trajectory planning Vehicle model Lane changing ride comfort Lane keeping Vehicle performance Automobile driving

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：