Results 1 to 10 of about 45,196 (330)

Arcing High Impedance Fault Detection Using Real Coded Genetic Algorithm

, 2007
Safety and reliability are two of the most important aspects of electric power supply systems. Sensitivity and robustness to detect and isolate faults can influence the safety and reliability of such systems.
Al-Othman, A.K., Sykulski, J.K., Zamanan, N.   +2 more
core  

Enhanced independent pole control of hybrid MMC-HVDC system [PDF]

, 2018
This paper presents an enhanced independent pole control scheme for hybrid modular multilevel converter (MMC) based on full bridge sub-module (FBSM) and half bridge sub-module (HBSM). A detailed analysis of power distribution between upper and lower arms
Ling, Weixing, Wen, Jingyu, Xiang, Wang, Xu, Lie   +3 more
core   +1 more source

Advancing Grounding System Design: A Comprehensive Review of Key Elements, Parameters, and Performance Insights

IEEE Access
The design of high-performance grounding systems is a cornerstone of safety and reliability in modern AC substations, particularly under increasingly severe fault and transient operating conditions.
Mahmoud Wahba, Hamdy A. Ziedan, Mohamed A. Ismeil, Montaser Abdelsattar   +3 more
doaj   +1 more source

Power line fault detection based on waveform comparison offline location technology

Journal of Intelligent Systems
This study proposes a distribution line fault detection and location technology based on waveform comparison, aiming to improve fault detection accuracy and shorten analysis time.
Li Shengzhu, Ge Yulin, Wang Zhipeng, Yun Zejian, Liu Jianze   +4 more
doaj   +1 more source

Line selection method for mine small-current grounding based on optimized VMD and RF

Gong-kuang zidonghua
In underground small-current grounding power supply systems, the decomposition performance of the single-phase grounding fault line selection method based on Variational Mode Decomposition (VMD) depends heavily on the selection of parameters such as the ...
ZHU Jun, LI Jiacheng, ZHAO Guotong, WANG Xiaodong, YANG Ming, WEI Xiangyuan   +5 more
doaj   +1 more source

BEHAVIOUR OF BACKFILL MATERIALS FOR ELECTRICAL GROUNDING SYSTEMS UNDER HIGH VOLTAGE CONDITIONS [PDF]

Journal of Engineering Science and Technology, 2015
Backfill materials like Bentonite and cement are effective in lowering grounding resistance of electrodes for a considerable period. During lightning, switching impulses and earth fault occurrences in medium and high voltage networks, the grounding ...
S. C. LIM, C. GOMES, M. Z. A. A. KADIR, G. NOURIRAD, Z. A. MALEK   +4 more
doaj  

Analisa Gangguan Satu Fasa Ke Tanah Yang Mengakibatkan Sympathetic Trip Pada Penyulang Yang Tidak Terganggu Di PLN APJ Surabaya Selatan [PDF]

, 2006
Twenty kilovolts power distribution network system at East Java use high resistance (500 ?) grounding system that makes maximum single phase to ground fault current 25 Amperes. To detect this fault current, a Directional Ground Relay (DGR) is used.
Kongdoro, R. (Rusli), Machmudsyah, T. (Tabrani), Setiadji, J. S. (Julius)   +2 more
core  

Fault current characterisation in VSC-based HVDC systems [PDF]

, 2016
The DC-side line faults in high-voltage direct-current (HVDC) systems utilising voltage-source converters (VSCs) are a major concern for multi-terminal HVDC systems in which complete isolation of the faulted system is not a viable option.
Ademi, Sul, Dysko, Adam, Ha, Hengxu, Subramanian, Sankara, Tzelepis, Dimitrios   +4 more
core   +1 more source

A fault section location method based on the slope similarity of zero-sequence current waveform for the non-effectively grounding system

International Journal of Electrical Power & Energy Systems
When a single-phase ground (SPG) fault occurs in a non-effectively grounding system (NUGS), it is crucial to locate the fault section quickly. However, existing detection methods for high-resistance grounding faults suffer from low locating accuracy, and
Xinhui Zhang, Aiyu Guo, Changyong Hu, Shuyu Xie, Jinghua Wang   +4 more
doaj   +1 more source

How to protect a wind turbine from lightning [PDF]

Techniques for reducing the chances of lightning damage to wind turbines are discussed. The methods of providing a ground for a lightning strike are discussed.
Dodd, C. W., Mccalla, T., Jr., Smith, J. G.   +2 more
core   +1 more source