检索结果-南通市图书馆

2010 3.d IEEE International Conference on Computer Science and Information Technology—ICCSIT 2010

作者： Cui Haoyang School of Computer Science and Information engineering shanghai University of electric {3. shanghai china School of Communication and Information engineering shanghai University shanghai china Hangzhou Qianjiang River Electic Group Co. Ltd.Hangzhou china Tang Zhong School of Computer Science and Information engineering shanghai University of electric {3. shanghai china Fang Yong School of Communication and Information engineering shanghai University shanghai china Liu Jun Hangzhou Qianjiang River Electic Group Co. Ltd.Hangzhou china Ye Bo School of Computer Science and Information engineering shanghai University of electric {3. shanghai china

This paper presents a fault diagnosis method for power *** diagnosis plays an importance role in the efforts for transformer diagnosis to shift form "preventive maintenance"to"condition based maintenance"（CBM）,and consequently to reduce the maintenance *** since its birth,numerous techniques have been researched in this field,each method however,has its own advantages and *** diagnosis is a challenging problem because there are numerous fault situations that can possibly happen to a electrical *** is one of the most importance parameters for the diagnosis of electrical transformers fault *** on the appearance information of temperature,a fault monitoring system can make diagnosis intelligently,therefore it can provide a rapid scientific treatment options for the field *** the problem of transformer fault diagnosis based on temperature information,we use Bayesian probability density theory method to explain the equipment fault diagnosis *** maximum membership probability principle will be adapted to judge whether the equipment is *** results shows that when the working temperature is between 64～72 oC,the diagnosis results without compensation is working on normal state,while the diagnosis results with compensation is general fault ***,the diagnosis results without compensation have large error with the actual *** proposed methodology in this paper was testified having important significance in improving the reliability and the information level of transformer operation.

关键词： transformers Bayesian probability density theory fault diagnosis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

配电系统多重故障的负荷转移策略研究

引用

水电能源科学 2010年第7期28卷 150-152,109页

作者：沈健上海交通大学电子信息与电气工程学院电气工程系上海200125

通过改进染色体编码和寻优规则,提出了一种基于遗传算法并结合启发式规则的有效算法,用于解决配电系统发生多重故障时寻求负荷转移优化方案这一多目标问题,求解过程中考虑了辐射型网络结构参数配置及馈线额定电流等因素。以虚拟配电网... 详细信息

通过改进染色体编码和寻优规则,提出了一种基于遗传算法并结合启发式规则的有效算法,用于解决配电系统发生多重故障时寻求负荷转移优化方案这一多目标问题,求解过程中考虑了辐射型网络结构参数配置及馈线额定电流等因素。以虚拟配电网络发生多重故障的算例验证了该算法的有效性。

关键词：配电系统多重故障负荷转移策略研究 Distribution Systems Multiple Strategy 基于遗传算法染色体编码启发式规则多目标问题有效算法优化方案系统发生网络结构求解过程配电网络额定电流参数配置有效性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Esearch of Chaos in Marine electric power System

Esearch of Chaos in Marine Electric Power System

引用

ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Shi Weifeng (department of electrical Automation shanghai Maritime University shanghai 20013. china)

Linking with marine electric power system practicality, a mathematic model of two generators parallel connective operation of electric power network in light load state was established and researched.

关键词： Marine electric power system chaos Lyapunov exponent chart Lyapunov dimension chaos distinguish.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

ECONOMIC LOAD DISPATCH BASED ON HYBRID EVOLUTIONARY ALGORITHM AND FUZZY NUMBER RANKING METHOD

ECONOMIC LOAD DISPATCH BASED ON HYBRID EVOLUTIONARY ALGORITH...

引用

第11届国际模糊系统协会世界大会

作者： Guoli Zhang Gengyin Li Hong Xie Jianwei Ma department of Applied Mathematics North china electric {3. University Baoding 071003.china. department of Electronic engineering shanghai Maritime University shanghai 20013. china

＜正＞ In this paper we propose a new economic load dispatch model considered cost function coefficients with uncertainties and the constraints of ramp rate. The uncertain parameters are represented with fuzzy numbers, and the model is called fuzzy dynamic economic load dispatch model （FDELD）. A novel hybrid evolutionary algorithm and fuzzy number ranking method is proposed to solve FDELD problem. Hybrid evolutionary algorithm combines evolutionary algorithm with very strong global search ability and quasi-simplex technique with better local search capability. The fuzzy number ranking method is used to compare the fuzzy cost function values when optimizing fuzzy cost function. In addition, this paper gives a novel method dealing with directly constrained conditions, and it is not necessary to construct penalty function, as a common disposal constraints method. The experimental study shows that FDELD is practical and the algorithm and techniques proposed are very efficient to solve FDELD problem.

关键词： Economic load dispatch Evolutionary algorithm Quasi-simplex technique Fuzzy number ranking Constraint disposal method

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effects of Annealing Temperature on the electrical Conductivity and Mechanical Property of Cu-Te Alloys

引用

Journal of Wuhan University of Technology(Materials Science) 2007年第1期22卷 88-90页

作者：朱达川 Metallic Material department College of Material Science and Engineering Sichuan University

The effects of annealing temperatre on the electrical conducitivity and mechanical property of Cu-Te alloys were studied via an AG-10TA electronic universal machine, an SB223. digital electric bridge, SEM, EDS and XPS. The results show the electrical conductivity increases while the tensile strength fluctuates when the annealing temperature becomes higher because the recrystallization occurs during the annealing process, leading to the density of dislocation decreasing, grain size growing up, but the second phase precipitating sufficiently and simultaneously.

关键词： Cu-Te alloys annealing temperature recrystallization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modification of LiNiPO4 by Metal Doping and Carbon Coating

Modification of LiNiPO4 by Metal Doping and Carbon Coating

引用

2011 International Conference on Materials for Renewable Energy & Environment(ICMREE 2011)

作者： Jingjing Xu1 Chunyan Lai1 2 BaofengWang1 2 Honghua Ge1 2 Qunjie Xu1 21 College of Energy and Environmental engineering shanghai University of electric {3. shanghai china2 Key laboratory of shanghai Colleges and Universities for electric {3. Corrosion Control and Applied Electrochemistry shanghai china

Single-phase LiNiPO4 and doped and coated LiNiPO4 particles were synthesized by solid-state reaction *** electrochemical properties of LiNiPO4/Li4Ti5O12 batteries were analyzed by cyclic voltammetry（CV） and charge/discharge *** structural and morphological performance of LiNiPO4 and doped LiNiPO4 particles were investigated by X-ray diffraction（XRD） ,scanning electron microscope（SEM） and Fourier transform infrared spectroscopy（FTIR） .The results show that the electrochemical properties of doped LiNiPO4 have been improved.

关键词： Cathode materials Li-ion batteries LiNiPO4 LiNiPO4/Li4Ti5O12 Doping

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

多目标电网规划的一般最优化模型

引用

上海交通大学学报 2004年第8期38卷 1229-1232,1237页

作者：程浩忠高赐威马则良朱忠烈许进王晓晖上海交通大学电气工程系上海200030 国家电力公司华东公司上海200002

针对现有电网规划中难以很好综合考虑经济性和可靠性的问题,在对电网规划进行数学描述的基础上,以供应方开发成本最小和需求方缺电成本最小为目标函数,提出了多目标电网规划的一般最优化模型,并直接在算法的寻优过程体现该最优化模型.... 详细信息

针对现有电网规划中难以很好综合考虑经济性和可靠性的问题,在对电网规划进行数学描述的基础上,以供应方开发成本最小和需求方缺电成本最小为目标函数,提出了多目标电网规划的一般最优化模型,并直接在算法的寻优过程体现该最优化模型.同时以改进的混合遗传模拟退火算法为求解工具,来解决该多目标电网规划问题.算例证明了该模型的有效性.

关键词：电力系统规划多目标最优化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Magnesium alloys as anodes for neutral aqueous magnesium-air batteries

引用

Journal of Magnesium and Alloys 2021年第6期9卷 1861-1883页

作者： Fanglei Tong shanghai Wei Xize Chen Wei Gao department of Chemical and Materials engineering Faculty of EngineeringThe University of AucklandAuckland 1010New Zealand

Magnesium(Mg)is abundant,green and low-cost ***-air(Mg-air)battery has been used as disposable lighting power supply,emergency and reserve *** is also one of the potential electrical energy storage devices for future electric vehicles(EVs)and portable electronic devices,because of its high theoretical energy density(6.8 k Wh·kg^(-1))and ***,the practical application of Mg-air batteries is limited due to the low anodic efficiency of Mg metal anode and sluggish oxygen reduction reaction of air *** metal as an anode material is facing two main challenges:high self-corrosion rate and formation of a passivation layer Mg(OH)_(2)which reduces the active surface *** last decades,a number of Mg alloys,including Mg-Ca,Mg-Zn,commercial Mg-Al-Zn,Mg-Al-Mn,and Mg-Al-Pb alloys,have been studied as anode materials for Mg-air *** article reviews the effect of alloying elements on the battery discharge properties of Mg alloy *** challenges of Mg-air batteries are also discussed,aiming to provide a depth understanding for the theoretical and practical development of high-performance Mg-air batteries.

关键词： Metal-air battery Mg anode Mg alloy Battery performance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Capacitor Commutated Converter（CCC） as an Alternative for Application in Slip-Energy Recovery Drives

The Capacitor Commutated Converter（CCC） as an Alternative ...

引用

第11届国际电机与系统学术会议

作者： Aimeng Wang Yamin Yuan North china electric power University/{3. of electrical engineering Baoding 071000 china

＜正＞The novel application of CCC technology in the slip energy recovery drive system（SERDS） is proposed for an improvement of the susceptibility of the inverter to commutation failure,reducing the reactive power consumption and a good power *** this paper,the reason of commutation failure is analyzed,simulation model with proposed commutated capacitors between the inverter bridge and the inverter transformer in SERDS are set up and it demonstrate that the method for mitigating commutation failure is effective,simple and feasible.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Network marketing——viral marketing theory and practice

Network marketing——viral marketing theory and practice

引用

2011年全国电子信息技术与应用学术会议

作者： Jin TAN 1,Min LIU 2 1 School of Electronic & electric engineering,shanghai Second Polytechnic University,shanghai,china 2 School of Computer & Information,shanghai Second Polytechnic University,shanghai,china

This essay try to introduce Viral Marketing in the form of case,and through analyzing its success or failure,pros or cons,I’ll make my effort to find the foothold and risk point in *** can see that,to be a kind of network marketing which spread by customers themselves,Viral Marketing has weak controllability and *** when countless enterprises which be attracted by low-cost or high-efficacy want to joy in the field,they stop for its unpredictable *** source,the communication channels,the object of Viruses constitute three elements in planning a Viral *** essay has summarized some facts about how to planning Viral Marketing successfully to holding the network environment and accumulating the power of *** can go to its real work in Marketing.

关键词： viral marketing network marketing e-commerce case

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：