期刊：
IEEE PES Innovative Smart Grid Technologies,2012年:1-5
作者机构：
[Luo Sha; Zeng Xiangjun; Peng Feng; Liu Hui] School of Electrical & Information Engineering, Changsha University of Science and Technology, Hunan Province, P. R. China
摘要：
Along with the development and construction of smart grid and smart substation, the research on the electronic current transformer develops deeply. In order to achieve the measuring requirements of high accuracy and broad range, a new design of combined electronic transformer is proposed in this paper based on the analysis of current technology; the waveform smooth algorithm is adopted to solve the skipping problem which may occur at the time of data switch. At the end, MATLAB Simulations verify the feasibility of the algorithm. This paper will be helpful in the design of combined electronic current transformer.
会议名称：
2nd International Conference on Advances in Energy Engineering (ICAEE)
会议时间：
DEC 27-28, 2011
会议地点：
Bangkok, THAILAND
会议主办单位：
[Zeng, Xiang-jun;Luo, Xiao-long;Xiong, Ting-ting;Pan, Hui] Changsha Univ Sci & Technol, Sch Elect & Informat Engn, Changsha 410076, Hunan, Peoples R China.^[Lu, Jia-zheng] Human Elect Power Sci & Res Inst, Power Transmiss Line Anti Disaster Lab State Grid, Changsha 410007, Peoples R China.
摘要：
A traveling wave fault location method for combined transmission lines based on search algorithm of pre-value look-table is presented. In this method, it tries to practice upon the time difference of fault induced initial traveling wave detected at the two ends of lines and the default time mid-point for the search direction, then the fault section is determined through comparing with the time difference between the arrival time of each overhead line and underground cable connection point. Thus the fault point is calculated by the double ended fault location formula. Based on this, an recloser control scheme is used: recloser signal is locked when cable fault happens, otherwise, be opened. EMTP simulation results show that, this method can determine the accurate fault location, the error is no more than 50m. It is unaffected by transition resistance, fault type and fault location, can precisely realize smart re-closing and be strong practical.
作者机构：
College of Electrical Engineering, Changsha University of Science and Technology Changsha, China;College of Electrical Engineering, Changsha University of Science and TechnologyChangsha, China
会议名称：
2012 International Conference on Intelligent System Design and Engineering Applications(2012年智能系统设计与工程应用国际会议 ISDEA 2012)
会议时间：
2012-01-06
会议地点：
三亚
会议论文集名称：
2012 International Conference on Intelligent System Design and Engineering Applications(2012年智能系统设计与工程应用国际会议 ISDEA 2012)论文集
关键词：
Close-in Short circuit fault;Short circuit current;Electrical test
摘要：
Close-in Short-circuit is one of the most severe fault of the main transformer. It can cause insulation damaged, winding deformation and even completely damaged. So, how to control the influence of the near-range Short-circuit on a running transformer is the most important problem in the power system now. In this paper, its mechanism and influence to transformer has analyzed, and the technical approach to improve this trouble has been presented with the typical example of fault.
关键词：
Distribution network;Ground fault;Grounding line selection;Isolated neutral;Resonance neutral earthing
摘要：
Abstract：This paper analyses characteristics of single-phase ground fault in distribution system. Now, most of the line selection methods have some limitations, which leads to the low accuracy of the fault line selection. In order to solve above problems, make use of the matlab software in this article to simulate and analyze the isolated neutral system and resonance neutral earthing system when they occur single-phase ground fault. Finally, the new method based on first half wave method and increment of residual current to improve the accuracy of fault line selection is proposed.
作者机构：
[唐欣; 滕本科] College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410076, China;[涂春鸣] College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
通讯机构：
[Tang, X.] C;College of Electrical and Information Engineering, Changsha University of Science and Technology, China
期刊：
Applied Mechanics and Materials,2012年203:370-374 ISSN：1660-9336
通讯作者：
Wu, J.(jie_cq@163.com)
作者机构：
[Wu, Jiajie] Department of Electric Power Engineering, Chongqing Electric Power College, China;[Pan, Yuanli] Xingtai Power Supply Compony, China;[Yi, Jun; Wang, Yuan] School of Electrical and Information Engineering, Changsha University of Science and Technology, China
通讯机构：
[Wu, J.] D;Department of Electric Power Engineering, China
会议名称：
2012 International Conference on Mechatronic Systems and Automation Systems, MSAS 2012
会议时间：
21 July 2012 through 21 July 2012
关键词：
Chance constrained;Hybrid power generation system;Stochastic controllable new energy;Stochastic optimal decision
