Results 271 to 280 of about 224,672 (287)
Some of the next articles are maybe not open access.
Single-Phase Ground Fault Detection of Small Current Grounding System Base on Wavelets Analysis
2013In order to improve the accuracy of line selection and reduce the possibility of single-phase ground fault in small current grounding system, this chapter solved two key problems including exploring the fault information of transient signals as much as possible and extracting the characteristic component of transient signals. This chapter proposed that
Huanghuang Liu, Qianjin Liu
openaire +1 more source
Fault Location for Small Current Grounding System Based on Injection Method
2021This paper introduces the single-phase grounding fault line selection and location protection of small current grounding system based on “S injection method”. When the power failure occurs, the insulation recovery and location of the protection are difficult. A new localization method is proposed.
openaire +1 more source
Fault Line Detection in Small Current Grounding Systems Based on RBF Network
Third International Conference on Natural Computation (ICNC 2007), 2007It is a long-standing issue on fault line detection of single-phase grounding fault in the small current grounding systems. If only one fault line detection method is used, fault information will be analyzed partially, which is not enough for fault line detection; and there are different fit conditions for every method.
Yundong Song +3 more
openaire +1 more source
2012 International Conference on Wavelet Active Media Technology and Information Processing (ICWAMTIP), 2012
Firstly, we use MATLAB to simulate the small current grounding grid single-phase grounding fault. Secondly,we apply the GHM multiwavelet transform to analyze the transient electric signal caused by single-phase earth fault.
null Yu-Ling Luo, null Hui Luo
openaire +1 more source
Firstly, we use MATLAB to simulate the small current grounding grid single-phase grounding fault. Secondly,we apply the GHM multiwavelet transform to analyze the transient electric signal caused by single-phase earth fault.
null Yu-Ling Luo, null Hui Luo
openaire +1 more source
Applied Mechanics and Materials, 2013
In case of the arc suppression coil for neutral point grounding of small current grounding system, when single-phase grounding fault occurs, due to the arc suppression coil for fault line of the compensation effect of the zero sequence current, the fault features is not obvious, it can't implement the fault line selection and fault point location. This
Jun Zhou, Ke Zheng Cao
openaire +1 more source
In case of the arc suppression coil for neutral point grounding of small current grounding system, when single-phase grounding fault occurs, due to the arc suppression coil for fault line of the compensation effect of the zero sequence current, the fault features is not obvious, it can't implement the fault line selection and fault point location. This
Jun Zhou, Ke Zheng Cao
openaire +1 more source
Design of Small Current Grounding Fault Line Selection System
2023 3rd International Conference on Energy Engineering and Power Systems (EEPS), 2023Shengzhu Li +4 more
openaire +1 more source
Research about single-phase fault feeder selection of small current neutral grounding system
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC), 2011The reliability of selecting the power lines of single-phase fault in small current grounding system is rather low because the fault current is too little, the electric arc is unstable, the electromagnetic interference is strong and the SNR is low.
null Xiuhua Wu +2 more
openaire +1 more source
A Fault Section Location Method for Small Current Grounding System Based on HHT
2018 China International Conference on Electricity Distribution (CICED), 2018A fault section location method for small current grounding system based on Hilbert-Huang Transform (HHT) is proposed. When a single-phase grounding fault occurs in the distribution network, the transient zero sequence current uploaded by the FTU on the feeder is decomposed by empirical mode decomposition (EMD) to obtain a limited number of intrinsic ...
Jianwen Zhao +5 more
openaire +1 more source
Analysis and Application of Small Current Grounding System Transient Based on Mathematical Models
2010 International Conference on Electrical and Control Engineering, 2010The single-phase grounding fault line selection in the distribution network has always been an outstanding problem of power system relay protection. One of the key reasons for fault line selection difficulty is that the fault current is correspondingly too weak to be detected effectively for the small current grounding system which is widely adopted in
Huang Zhiqin, Cui Shenjun
openaire +1 more source
Summary of Fault Line Selection for Single-phase Grounding in Small Current Systems
2020At present, fault line selection theory of small current grounding system mainly focuses on solving the reliability problem of urban power supply system. There is little research on the line selection theory of mine distribution network, but single phase ground fault in mine distribution network will cause more harm.
Xianhui Zhu +4 more
openaire +1 more source