作者机构：
[王贤军; 袁肖雷; 王永安; 周羽生; 熊强] College of Electrical Engineering and Information, Changsha University of Science and Technology, Changsha, 410114, China;[马晓红; 代洲] Electric Power Research Institute of Guizhou Power Gird Co., Ltd., Guiyang, 550000, China
通讯机构：
[Zhou, Y.] C;College of Electrical Engineering and Information, China
作者机构：
[袁肖雷; 周羽生; 王永安; 熊强; 王贤军] College of Electrical Engineering and Information, Changsha University of Science and Technology, Changsha;410114, China;[马晓红; 代洲] Electric Power Research Institute of Guizhou Power Grid Co., Ltd, Guiyang;550000, China;[袁肖雷; 周羽生; 王永安; 熊强; 王贤军] 410114, China
通讯机构：
[Zhou, Y.] C;College of Electrical Engineering and Information, China
作者机构：
[周羽生; 罗屿; 刘亮; 荆群伟] College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha;410015, China;[赵纯; 胡建平] Disaster Prevention and Reduction Center, Hunan Electric Power Company of State Grid, Changsha;410125, China;[周羽生; 罗屿; 刘亮; 荆群伟] 410015, China
通讯机构：
[Luo, Y.] C;College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha, China
会议论文集名称：
Information science and management engineering II: 2014 International Conference of Information Science and Management Engineering, volume I
关键词：
Distribution network;Genetic algorithm (GA);LVQ neural network;The fault characteristic;The comprehensive line selection
摘要：
For the problem of low accuracy of using single fault signal feature line selection in distribution network, distribution network grounding fault comprehensive line selection method based on genetic algorithm (GA) to optimize learning vector quantization (LVQ) neural network is proposed. Problem of fault line selection as special classification problem, by fast Fourier transform (FFT) and wavelet analysis WPT algorithm, the corresponding fault characteristics for the zero sequence current signal from the different fault types are extracted as neural network input. LVQ neural network trained by GAs to get the optimal initial weights, the trained LVQ neural network is used to fault line selection. Compared with line selection results of the traditional LVQ neural network, the network performance is improved effectively, and the risk of misjudge is reduced. The simulation results show that the genetic algorithm to optimize LVQ neural network in the application of comprehensive ground fault line selection for distribution network is feasible.
会议论文集名称：
Information science and management engineering II: 2014 International Conference of Information Science and Management Engineering, volume I
关键词：
Distributed generation;Distribution network;Harmony algorithm;Genetic algorithm;Regional processing and switching function
摘要：
In order to improve the speed and fault tolerance of the distribution network with DG. This paper puts forward using highly parallel and the robust genetic algorithm to solve the shortcoming of overreliance on initialize harmony memory for basic harmony algorithm and improves the way of data processing of harmony algorithm. According to the structure characteristics of the distribution network with DG, the "tree" division method is used, based on the minimum set theory to improve fault location switching function in order to improve the fault tolerance. Finally, to the distribution network fault location model, the improved harmony search and basic harmonic algorithm are used respectively for optimal operation analysis and comparison. Results show that the improved harmony search algorithm can effectively improve the convergence speed and precision of fault location; it has good real time and tolerance for the lack and distortion of information.
会议论文集名称：
Information science and management engineering II: 2014 International Conference of Information Science and Management Engineering, volume I
关键词：
High voltage;AC transmission;Corona discharge;Electromagnetic environment;Charge simulation method
摘要：
High-voltage electrical power transmission is an important development direction to improve the capacity of power transmission. However, the electromagnetic environmental problems caused by High voltage have been of concern, and corona is an important factor to influence on electromagnetic environment around transmission line. In this paper, based on the charge simulation method, and space charge effecting on line face charge distribution, the computation method of electric field intensity of the high-voltage transmission lines taking the corona discharge into account was established. With this model, ground level electrical field under 1000 kV UHV transmission lines was calculated; the result showed the impact of corona discharge on ground level electrical field distribution characteristics, the maximum electric field intensity appears on a distance of about 23 m to the middle phase line in horizontal position on the ground, the corona discharge could strengthen composed ground level electric field of transmission lines, and the greatest influences of corona on ground level electrical field could be below the middle phase line.
会议论文集名称：
Information science and management engineering II: 2014 International Conference of Information Science and Management Engineering, volume I
关键词：
high-frequency excitation;high-frequency traps;low-order harmonics;active power filter;harmonic suppression
摘要：
High-frequency, high-voltage excitation melting ice is a kind of methods of realizing the transmission line online power melting ice, using this melting ice technology on transmission line, the excitation device produces both a higher frequency harmonic and a low-order harmonic because of the internal excitation power electronics. This paper designs a set of line resistance wave method for 18 kV/40 kHz high-frequency, high-voltage melting ice technology, the high-frequency wave traps access at the transmission line ends, using the principle of single frequency allowing only 40 kHz high-frequency signal through the line of melting ice to ensure the high-frequency melting ice. The active power filter is used to suppress the low-order harmonics because of the internal excitation power electronics to ensure the quality of power transmission. By simulation, the correctness of preventing wave method for high-frequency high-voltage de-ice lines was verified.
会议论文集名称：
ACSR-Advances in Comptuer Science Research
关键词：
Electric vehicle power system;Power supply mode;Power quality problem;Hilbert Huang transform
摘要：
Future electric cars (plug-in electric vehicle, PEV) large-scale access, will bring to power system planning and operation can not be ignored. This article first introduces the research status of electric vehicles, including its development scale, technical characteristics and power supply mode, and points out that due to regional differences between the consideration of different factors. Then brainstorm the electric car a lot on the market after use, starting from the power generation side and distribution side, which will bring both the improvements and new problems. Power quality problem for electric cars, is proposed in this paper, based on the Hilbert Huang transform (HHT) classification of power quality disturbance identification method and time of the positioning method. Based on Matlab7.0 simulation platform, because of the influence of the length, only for one of the power quality problems (voltage sag) for signal recognition and time orientation, the simulation results show that the method has good recognition ability and precision.
期刊：
Proceedings of the 5th IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies, DRPT 2015,2015年:1695-1699
作者机构：
[彭湃; 安正洲; 刘让姣; 高云龙; 周羽生] College of Electrical Engineering and Information, Changsha University of Science and Technology, Changsha, 410114, China
通讯机构：
[Gao, Y.-L.] C;College of Electrical Engineering and Information, Changsha University of Science and Technology, Changsha, China
