检索结果-内蒙古大学图书馆

43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017

作者： Xiaohui, Ye Chuanbao, Chen Haifeng, Li Xinli, Song Wenzhuo, Liu Hang, Meng Yan, Zou Power System Department China Electric Power Research Institute Haidian District Beijing100192 China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Source Baoding071003 China Electric Power Dispatch and Control Center State Grid Jangsu Electric Power Company Nanjing210024 China

ISBN: (纸本)9781538611272

As the development and building of 220kV and 500kV Unified power Flow controller (UPFC) in Jiangsu grid of China, a higher requirement is put forward by power grid analysis on the accuracy of modelling and simulation. UPFC has different characteristics under different control strategies, and Modular Multilevel Converters (MMC) simulation is a difficult task. In order to study its dynamic characteristics, an electromagnetic model of UPFC based on MMC was proposed, which could simulate its different control strategies and relative dynamic characteristics. The proposed model was realized in PSD-PSModel program and verified using IEEE39 case. The simulation results show that the proposed UPFC model could provide effective tool for analysing the UPFC's dynamic characteristics. © 2017 IEEE.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

QoE-aware user association and resource allocation for mixed services in heterogeneous networks

引用

IOP Conference Series: Materials Science and Engineering 2019年第7期490卷

作者： Shuxian Li Liangrui Tang Jiangyu Yan State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China School of Control and Computer Engineering North China Electric Power University Beijing 102206 China

In heterogeneous networks (HetNets), user association and resource allocation (UARA) is a great challenge for radio resource management (RRM). In this paper, a novel QoE-aware UARA scheme is proposed. The delay factor is introduced to QoE metric to weight delays' effect on service transmitting. Then the UARA scheme based on QoE is formulated as an optimization problem which is a mixed integer nonlinear programming (MINLP) problem. To solve the problem, we adopt the genetic algorithm (GA) and associate the user association and the resource with population and fitness respectively. Through the evolutions of genetic algorithm, the optimal UARA scheme can be worked out. The simulation results indicate that the proposed scheme can reduce packet loss rate, and improve the system load balancing performance.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Real-time synchronous data visualization for wide area power systems

Real-time synchronous data visualization for wide area power...

引用

2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Li, Yi Zhang, Hengxu Zhou, Gang Liu, Gang Feng, Zhongkui Meng, Qinggang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan250061 China Zibo Power Supply Company State Grid Shandong Electric Power Company Zibo370303 China

ISBN: (纸本)9781538614273

With the construction of global energy interconnection, plenty of fluctuating renewable energy access the distribution network, power system dynamic behavior is more complex. The wide-area measurement system light (WAMS Light) records the actual variation of the grid in the distribution network with high accuracy. Exploring the value of high-density, large-scale synchronous data and comprehensive visualization can efficiently reflect the behavior of the system. An open and interactive WAMS Light data visualization platform (WAMSLVP) is built with three-tier structure. WAMSLVP is designed by analysing the function requirements in multi-information fusion, multi-angle analysis, multi-layer integration, program flexible access based on the characteristics of distribution network. And WAMSLVP integrates the frequency, voltage magnitude, angle phase and other power information with the non-power information as multiple layers to compositive display based on geographic information system (GIS), facilitating the dispatchers simultaneously capture multiple information from different analysis just by a glance. © 2017 IEEE.

关键词： Condition monitoring

来源：评论

学校读者我要写书评

暂无评论

Short-term wind power probabilistic forecasting considering spatial correlation

Short-term wind power probabilistic forecasting considering ...

引用

2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Wang, Junxiong Han, Xueshan Jiang, Jiayin Li, Wenbo Ma, Yanfei Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China State Grid Shandong Electric Power Rresearch Institute Jinan China State Grid Jinan Power Supply Company Jinan China

ISBN: (纸本)9781538614273

Wind power probabilistic forecasting is of great significance to the operation and dispatch of the power system. However, most researches have focused on how to predict wind power using local information rather than spatial correlation information of multiple wind farms in a region. In this paper a short-term wind power probabilistic forecasting approach considering spatial correlation is proposed. Originally, a set of explanatory variables highly correlated with the target variable is selected by calculating mutual information. Next, the principal component analysis can help to reconstruct the data and reduce the dimension of the explanatory variables. Finally, the conditional kernel density estimation is introduced to predict the short-term wind power of the target wind farm. Case studies on the dataset of Global Energy Forecasting Competition 2014 verify that the proposed approach can achieve better performance than traditional approach. © 2017 IEEE.

关键词： Principal component analysis

来源：评论

学校读者我要写书评

暂无评论

Research on capacity configuration method of concentrated reactive power compensator for wind farm LVRT capability

Research on capacity configuration method of concentrated re...

引用

6th International Conference on Renewable power Generation

作者： He, Jing Li, Qing Ma, Jing Zhang, Weibo Zhao, Yu State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing China

In order to fulfil the requirement for low-voltage ride-Through (LVRT) capability, the wind farms need to inject the reactive currents during grid fault to support voltage recovery. As the main concentrated reactive power compensator, the static var generators (SVGs) are widely employed in the wind farm for reactive current injection. This study investigates the dynamic reactive currents of the wind turbine based on the field-Test data during the grid faults. Then, the scheme that taking wind turbines as main reactive current sources and SVG as compensator is adopted to realise the wind farm LVRT capability. According to this scheme, the capacity configuration method of SVG is developed, which can be used to design SVG capacity to improve the wind farm dynamic reactive current behaviour. Finally, the simulation results are provided to demonstrate the effectiveness and the availability of the proposed method. © 2017 Institution of Engineering and Technology. All rights reserved.

关键词： Wind farm

来源：评论

学校读者我要写书评

暂无评论

A corrective security-constrained optimal power flow method for AC/DC hybrid systems based on MMC-HVDC

A corrective security-constrained optimal power flow method ...

引用

2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Lin, Yi Tang, Yu-Chen Qiu, Liu-Qing Zhang, Ming-Ye Ju, Yu-Tao State Grid Fujian Power Economic Research Institute Fuzhou China State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing China College of Information and Electrical Engineering China Agricultural University Beijing China

ISBN: (纸本)9781538614273

This paper presents an optimal power flow (OPF) model for AC/DC meshed networks with Modular Multilevel Converter based High Voltage Direct Current (MMC-HVDC) system. The OPF problem is formulated to minimize the total network loss of the whole AC/DC grids by adjusting generators and modular multilevel converters considering N-1 constraints and post-contingency corrective control. A practical method is proposed to handle N-1 static security constraints and corrective control with OPF more effectively. simulations are conducted on IEEE 39-bus testing system and a practical power grid. The results demonstrate the effectiveness of the approach. © 2017 IEEE.

关键词： Electric load flow

来源：评论

学校读者我要写书评

暂无评论

Chance-constrained programming model for reference network with wind power integration

Chance-constrained programming model for reference network w...

引用

2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Sun, Donglei Yang, Jinhong Han, Xueshan Wang, Junxiong Tian, Xin Yang, Bin Zhang, Lina Wang, Nan Economic and Technology Research Institute of State Grid Shandong Electric Power Company China State Grid Shandong Electric Power Maintenance Company China Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University China

ISBN: (纸本)9781538614273

With the large-scale integration of volatile wind power generations, power system operation and planning face the problem of increasing injection fluctuations and uncertainties. In this paper, chance constraint expressions are used to characterize the wind power uncertainty, and then a new chance-constrained programming model for reference network with wind power integration is proposed to ensure the expected wind power utilization. In the proposed model, the objective function is minimizing total power generation cost and transmission investment cost, and the constraints are the safety operation technical requirements under intact operation state and the preconceived contingency operation state. The sample average approximation (SAA) method is used to develop a deterministic approach for the proposed model. Numerical analysis shows the potential benefit of the proposed model. © 2017 IEEE.

关键词： Wind power

来源：评论

学校读者我要写书评

暂无评论

Fault causes identification for transmission lines based on HHT and PNN

引用

Journal of Physics: Conference Series 2019年第2期1187卷

作者： Wen Du Renfei Che Hao Zhang Xiaocheng Meng Juntao He Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education Shandong University Jinan State Grid Jiangsu Electric Power Company Technician Training Center Suzhou Zhengzhou Power Supply Company Zhengzhou 250061 China 215004 China 450006 China

In this paper, Hilbert-Huang transform(HHT) is introduced into the application of fault cause identification for transmission lines. This method is composed of empirical mode decomposition (EMD) and Hilbert transform. It can analyze the characteristics of signal frequency quantitatively and accurately[1]. By analyzing the information of four common faults from fault recorder, the Hilbert marginal spectrum and the Hilbert time-frequency spectrum can be considered as the feature of different fault causes which can be classified by a probability neural network (PNN). The results show that the method can effectively identify the cause of the fault and has a high accuracy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research on the Protection Range of Bird Droppings of 110kV Transmission Line Based on ANSYS Maxwell

引用

Journal of Physics: Conference Series 2019年第2期1187卷

作者： Hao Zhang Renfei Che Wen Du Xiaocheng Meng Juntao He Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education Shandong University Jinan State Grid Jiangsu Electric Power Company Technician Training Center Suzhou Zhengzhou Power Supply Company Zhengzhou 250061 China 215004 China 450006 China

The falling of bird droppings near the insulator of overhead transmission lines will cause distortion of the electric field distribution near the insulator, resulting in air gap breakdown and flashover. Studying the area where there may be a risk of breakdown near the insulators in such a situation is of great significance for bird damage prevention of overhead transmission lines. Based on the finite element method, this paper established the 110kV transmission line model using ANSYS Maxwell finite element software and calculated the variation of the electric field distribution around the insulator when the bird droppings fall. Using the air gap average breakdown electric field strength as the criterion to judge whether breakdown occurs or not, the risk area of the air gap breakdown is determined, thereby determining the protection range of the transmission line for the flashover caused by the falling of bird droppings.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Fault location in active distribution network based on the change of current phase

Fault location in active distribution network based on the c...

引用

2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Zhang, Chen Liu, Zhong Huang, Jun Wang, Bo Wang, Xiangnv State Grid Yangzhou Power Supply Company Weiyang Road 179 Yangzhou China Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University 17923 Jinshi Road Jinan China

ISBN: (纸本)9781538614273

The growing penetration of the distributed generation (DG) makes the traditional passive distribution network change to active distribution network. A new fault location method is proposed in this paper based on the change of the current phase, which can be used in active distribution network. Specifically, a fault model of the invert DG is proposed, then the active distribution network model is established. The current phase difference between the two ends of the distribution line are calculated for both the normal operation and fault conditions. The relationship between the current phase and the location of the fault is summarized. A fault location criterion is proposed based on the change of the current phase difference. The correctness and effectiveness of the proposed method is verified using the practically measured data and the fault simulation. © 2017 IEEE.

关键词： Location

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：