检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

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

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

529 篇 会议
70 篇 期刊文献

馆藏范围

599 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

307 篇 工学
- 246 篇 电气工程
- 110 篇 计算机科学与技术...
- 100 篇 电子科学与技术（可...
- 85 篇 软件工程
- 75 篇 动力工程及工程热...
- 73 篇 控制科学与工程
- 22 篇 仪器科学与技术
- 22 篇 网络空间安全
- 21 篇 机械工程
- 18 篇 信息与通信工程
- 17 篇 安全科学与工程
- 10 篇 力学（可授工学、理...
- 10 篇 材料科学与工程（可...
- 10 篇 土木工程
- 8 篇 建筑学
- 6 篇 化学工程与技术
- 4 篇 水利工程
- 3 篇 光学工程
- 3 篇 环境科学与工程（可...
167 篇 理学
- 115 篇 数学
- 67 篇 物理学
- 29 篇 统计学（可授理学、...
- 17 篇 系统科学
- 9 篇 地球物理学
- 4 篇 化学
45 篇 管理学
- 42 篇 管理科学与工程(可...
- 17 篇 工商管理
- 3 篇 图书情报与档案管...
11 篇 经济学
- 11 篇 应用经济学
8 篇 法学
- 8 篇 社会学
2 篇 医学

主题

55 篇 power system dyn...
53 篇 control systems
51 篇 voltage control
50 篇 voltage
44 篇 power system mod...
42 篇 power quality
41 篇 power system pro...
39 篇 power system rel...
35 篇 power generation
35 篇 mathematical mod...
33 篇 power system sta...
32 篇 power systems
31 篇 reactive power
31 篇 power system tra...
29 篇 voltage fluctuat...
28 篇 power system sim...
25 篇 power system har...
24 篇 analytical model...
24 篇 power system sec...
24 篇 circuit faults

机构

80 篇 key laboratory o...
80 篇 key laboratory o...
58 篇 key laboratory o...
46 篇 key laboratory o...
34 篇 ieee
33 篇 key laboratory o...
19 篇 key laboratory o...
19 篇 key laboratory o...
17 篇 key laboratory o...
17 篇 key laboratory o...
11 篇 key laboratory o...
8 篇 north china elec...
7 篇 school of electr...
7 篇 department of el...
6 篇 key laboratory o...
6 篇 department of el...
6 篇 key laboratory o...
6 篇 key laboratory o...
6 篇 department of el...
5 篇 laboratory of po...

作者

71 篇 gengyin li
57 篇 ming zhou
39 篇 chengyong zhao
30 篇 xiangning xiao
30 篇 zhongdong yin
28 篇 li gengyin
24 篇 xiao xiangning
23 篇 zengping wang
22 篇 zhou ming
21 篇 wang zengping
18 篇 tianshu bi
15 篇 ma jin
15 篇 zhao chengyong
14 篇 jianhua zhang
14 篇 jing ma
13 篇 qixun yang
13 篇 chengrong li
13 篇 wei wang
13 篇 ma jing
13 篇 he renmu

语言

532 篇 英文
67 篇 中文

检索条件"机构=Key Laboratory of Power System Protection and Dynamic Monitoring and Control"

共 599 条记录，以下是571-580 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

A novel harmonics injecting approach on over saturation suppression of DVR series injection transformer

A novel harmonics injecting approach on over saturation supp...

引用

International power Engineering Conference (IPEC)

作者： Zhongdong Yin Lixia Zhou Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education. North China Electric Power University China

ISBN: (纸本)9810557027

Voltage problems can be effectively solved by series compensators coupled with series injection transformers. However, the magnetic flux in iron core of series transformer may change in a large range depending on the close angle of injecting voltage, at the same time iron core easily get over saturated. Over saturation in transformer iron core leads to produce large field inrush current and distortion on compensating voltage wave, bring about hazard to operation of transformer and inverter, also increase the possibility of relay mishandling and finally decrease reliability of power supply. This paper analyzes the over saturation mechanism of series injection transformer and presents a novel harmonics injection control approach to suppress. The validity of proposed approach is verified by calculation and simulation

关键词： Circuit faults Iron Transformer cores Magnetic cores Magnetic flux Surges Hazards Inverters Relays power supplies

来源：评论

学校读者我要写书评

暂无评论

PD detection of XLPE cables accessories on UHF

PD detection of XLPE cables accessories on UHF

引用

Conference on Electrical Insulation and Dielectric Phenomena, (CEIDP)

作者： Bin Zheng Wei Wang Chengrong Li Changyu Li Luhua Zhang Beijing Key laboratory of High Voltage & EMC Key Laboratory of Power System Protection Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Beijing China

monitoring the partial discharge (PD) on site in cables accessories is now a more effective method of cable tests. Meaningful PD measurement can obtain reliable information on the condition of sealing ends and joints after installation or several years of operation which can contribute to considerable overall reduction of error risk. The UHF (ultra high frequency) method is an effective PD detection method. It shows out the superiority in measurement sensitivity and suppressing interference. It has been confirmed that the frequency of the PD pulse generated in cables can reach up to GHz, while the frequency of background noise usually lies below 400 MHz. Experiments show that the UHF PD pulse can radiate from the disconnection between the shields in the sealing ends or the joints, and it can also radiate out along the ground wire or the cross-linked wire. Moreover, the detection by UHF sensor towards four different types of PD models have been done in laboratory, such as sliding discharge model, floating discharge model, protrusion discharge model and cavity discharge model. Mass of statistic results of these PD pulses indicate the distinct characteristics. It can help to do the pattern recognition research, even to do further research on fault diagnosis for XLPE cables.

关键词： Cables Partial discharges Frequency UHF measurements Wire Testing Partial discharge measurement Interference suppression Pulse generation Background noise

来源：评论

学校读者我要写书评

暂无评论

The Output Spectrum Analysis of High-power Multilevel Voltage Source Converters using Double Fourier Series

The Output Spectrum Analysis of High-Power Multilevel Voltag...

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Xu Jiang Xiangning Xiao Hao Liu Yulong Ma Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Beijing China Electric Power of Henan Zhengzhou China

This paper presents a theoretically analytical technique for determining the spectral components of high-power multilevel voltage source converters. The technique uses double Fourier series to analyze the output waveform of multilevel asynchronous asymmetrical regular sampling SVPWM converter. The 3-D spectrum representation of the SVPWM based on the extension geometrical-wall-model is given in this article. According to the analytical method of two-level SVPWM and the phase-shifted carrier PWM, the new DFS of multilevel SVPWM of single phase is obtained. In order to validate the theoretically analytical method, a six modules cascaded H-bridge converter model using PSCAD is built. By comparing the spectrum and waveform calculated with the simulation, the correctness of the analytical formulas has been proved. And the technique can act as the method of selection PWM. Moreover, the technique can be used to analyze the output waveform of the high-voltage and high-power FACTS equipments, such as SVG, SSSC, UPQC

关键词： Voltage Fourier series Space vector pulse width modulation Harmonic analysis Switching frequency Sampling methods Analytical models power system harmonics Pulse width modulation inverters PSCAD

来源：评论

学校读者我要写书评

暂无评论

Study on wide area measurement system based transient stability control for power system

Study on wide area measurement system based transient stabil...

引用

International power Engineering Conference (IPEC)

作者： F.F. Song T.S. Bi Q.X. Yang Si Fang Research Institute Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Beijing China

In this paper, the state of the arts of power systems in China and some applications in transient stability control based on wide area measurement system (WAMS) are introduced briefly. With the development of power grid interconnection and transmission utility deregulation, the operation of electric power system become more and more complex, which challenges the security and transient stability control of power systems. The advent of WAMS opens a new path to the system trajectory prediction and real time closed-loop stability control to prevent power system outage. The defects of current transient stability control system are analyzed, then a possible scheme of transient stability control based on WAMS is proposed, and the corresponding future work is put forward as well. Finally, a new way of solving cascading events is discussed

关键词： power system transients power system stability power system control Wide area measurements control systems power system measurements power systems power system interconnection power system security power system analysis computing

来源：评论

学校读者我要写书评

暂无评论

Monte Carlo Simulation Based Available Transmission Capability Calculation

Monte Carlo Simulation Based Available Transmission Capabili...

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Yajing Gao Ming Zhou Gengyin Li Yuekui Huang Limin Xiao Rui Li Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Baoding Hebei China

With the further development of power markets, large amount of electric power wheeling and frequent transmission transaction is emerging, accurately determining available transmission capability (ATC) and broadcasting the ATC information in time are very important to prevent and relieve transmission congestion effectively. In practical power markets, there are large amount of uncertainties involved in transmission reliability margin (TRM) and capacity benefit margin (CBM) of ATC. Considering calculation accuracy and time, a novel approach is proposed to calculate ATC based on Monte Carlo simulation and sensitivity analysis considering large amount of uncertainties impacting the value of ATC. The steady state constraints and voltage stability and transient stability constraints are taken into account. The iterative solution based on PSASP by China EPRI is developed. IEEE 14-bus test system is used to verify the presented approach. The results show that the model and algorithm is correct and effective. The research achievements are undergoing to transfer to the application in certain provincial power system in China, and some new problems are suggested in the end of paper

关键词： power markets Uncertainty Stability power system modeling Broadcasting Transmission line measurements Accuracy Sensitivity analysis Steady-state Voltage

来源：评论

学校读者我要写书评

暂无评论

Research on the Arithmetic of Non-unit Voltage protection for EHV Transmission Line Based on Wavelet Analysis

Research on the Arithmetic of Non-unit Voltage Protection fo...

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Ming-yu Yang Shi-xu Wang Chen Mao-ying Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Baoding Hebei China

This paper presents a new non-unit voltage protection algorithm for extra high voltage (EHV) transmission lines. This scheme is developed using wavelet analysis, in which the singularity of fault transient voltage signals in one terminal is utilized to discriminate clearly between internal and external faults. Lipschitz exponent (LE) is obtained from wavelet modulus maximum to detect singularity of signals. A typical 500-kV EHV transmission system has been simulated by ATP to evaluate the scheme. The simulation results show that this scheme is capable of providing correct responses under various system configurations and fault conditions

关键词： Arithmetic Voltage Transmission lines Wavelet analysis power system transients power system protection power transmission lines Wavelet transforms Circuit faults Signal detection

来源：评论

学校读者我要写书评

暂无评论

Project Study of dynamic Voltage Restorer

Project Study of Dynamic Voltage Restorer

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Zhongdong Yin Minxiao Han Lixia Zhou Kunshan yU Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University China China Electrical Power Research Institute Beijing China

The paper studies a practical project of 2 MVA dynamic voltage restorer on the basis of transformer-less cascade multilevel topology, it discusses each part working principle of DVR, but also provides a practical voltage sag problem solving scheme for a 6 kV feed line based on proposed cascade structure. EMTDC/PSCAD based simulation results verify the validity of proposed scheme

关键词： Voltage fluctuations power quality power system dynamics power system restoration Computer aided manufacturing Variable speed drives Umbilical cable Electricity supply industry Accidents Superconducting magnets

来源：评论

学校读者我要写书评

暂无评论

On site PD detection on XLPE cable accessories

On site PD detection on XLPE cable accessories

引用

Electrical Insulation Conference and Electrical Manufacturing & Coil Winding Conference

作者： Wei Wang Changyu Li Chengrong Li Bin Zheng Luhua Zhang Beijing Key Laboratory of High Voltage & EMC Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education School of Electrical Engineering North China Electric Power University Beijing China

On-site partial discharge detection on XLPE cables accessories is very difficult because of pulse noise interference, such as pulse interference created by automobile ignition coils on the street, etc. A suitable solution for the monitoring of cable accessories during operation is a sensitive on-site PD detection method. This can be realized in an advantageous way with combinatorial sensors, an antenna sensor, a UHF sensor, and two VHF split-core PD sensors. These sensors are not connected to the high voltage directly, a UHF sensor can be placed near the cable joint and two split-core sensors can be installed on both sides of the cable joint easily and safely. The detection making several windows in the time domain towards multiple wide-band pulse signals can achieve reliable discrimination of real internal PD and external noise under noisy on site conditions. More than twenty cases of on-site PD detection for HV XLPE cables have been proven this way. This method has high detection sensitivity and high noise recognition ability

关键词： Partial discharges Cables Interference Automobiles Ignition Coils monitoring UHF antennas Voltage Wideband

来源：评论

学校读者我要写书评

暂无评论

Technology of detecting GIC in power grids & its monitoring device

Technology of detecting GIC in power grids & its monitoring ...

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Liu Lian-guang Zhang Hao Liu Chun-ming Guo Jian-hui Guo Qing-xiong Ministry of Education Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control (North China Electric Power University) Beijing China Hunan Chenzhou Electric Power Chenzhou Hunan China

The magnetic storm results in the transmission lines with geomagnetically induced current (GIC). And GIC happening in random has the frequency between 0.001 Hz~0.1 Hz, and continues from several minutes to several hours. Based on elaborating mechanism and characteristic of GIC in grids and the influence on China power grids, the article has conducted the research work of GIC monitoring technology, and has investigated the method of sampling data of GIC, the survey algorithm and the new monitoring device. The simulated test shows, the monitoring device can effectively measure GIC which is signal of quasi direct current and randomness, has advantages of having few data to be handled and needing little memory space, etc

关键词： power grids Computerized monitoring Circuit faults Storms power transmission lines Magnetic sensors Earth Magnetic field measurement Transmission line theory Magnetic devices

来源：评论

学校读者我要写书评

暂无评论

Environmental/Economic Transaction Planning Using Multiobjective Particle Swarm Optimization and Non-Stationary Multi-Stage Assignment Penalty Function

Environmental/Economic Transaction Planning Using Multiobjec...

引用

IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： Rui Ma Peng Wang Huachun Yang Guoqiang Hu Changsha University of Science and Technology Changsha China Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Ministry of Education North China Electric Power University Beijing China

This paper presents a new approach for environmental/economic transaction planning model of the electricity market. The environmental/economic transaction planning problem is formulated as a multi-objective optimal power flow (MOPF) problem. A novel algorithm using multiobjective particle swarm optimization (MOPSO) and non-stationary multi-stage assignment penalty function is proposed to solve this problem. PSO is modified by using dynamic neighborhood strategy, new particle memory updating, and one-dimension optimization to deal with multiple objectives. Incorporating of non-stationary multistage assignment penalty function in solving OPF problem can improve the convergence. The proposed method is demonstrated on the IEEE 30-bus system. The results show that the proposed approach can efficiently gain multiple pareto optimal transaction planning that match with the sustainable development strategy

关键词： Environmental economics Particle swarm optimization power generation economics Load flow power system protection power system planning power system economics Fuel economy power system security control systems

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共60页 << < 51 52 53 54 55 56 57 58 59 60 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

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：