Results 1 to 10 of about 2,858,375 (353)

Overvoltages in MV Industrial Grid under Ground Faults

Energy Engineering and Control Systems, 2019
Medium voltage distribution power grids mostly operate with ungrounded neutral points of transformers. The philosophy of these electrical grids is based on the assumption that they are more reliable than grids with grounded neutral.
Yuriy Varetsky
doaj   +2 more sources

Fuzzy Inference System Based Distance Estimation Approach for Multi Location and Transforming Phase to Ground Faults in Six Phase Transmission Line

International Journal of Computational Intelligence Systems, 2018
The faults occurring in different phases at multiple locations and different times are difficult to locate exact location using conventional techniques.
A Naresh Kumar, M Chakravarthy
doaj   +2 more sources

Wavelet Analysis to Detect Ground Faults in Electrical Power Systems with Full Penetration of Converter Interface Generation

Electronics, 2023
The requirements for the increased penetration of renewable energy sources in electrical power systems have led to a dominance of power electronic interfaces.
Luis Santiago Azuara Grande, R. Granizo, S. Arnaltes   +2 more
semanticscholar   +1 more source

Assessment of operational reliability of power supply to developing ore mining areas at a high-altitude mine

Горные науки и технологии, 2021
Development of new deposits and modernization of existing mining enterprises in order to improve their efficiency are the priorities for the development of tungsten-molybdenum resource sector. In the modernization of mining productions, attention is paid
R. V. Klyuev, I. I. Bosikov, O. A. Gavrina, V. I. Lyashenko   +3 more
doaj   +1 more source

Single Pole-to-Ground Fault Location System for MMC-HVDC Transmission Lines Based on Active Pulse and CEEMDAN

IEEE Access, 2021
To solve the problem of the location of the fault point of single-pole-to-ground faults in the transmission lines of MMC-HVDC systems, this paper designs a fault location system based on support vector machine (SVM).
Jian-Yu Wu, Sheng Lan, Si-Jie Xiao, Yong-Bin Yuan   +3 more
doaj   +1 more source

Location of Single Phase to Ground Faults in Distribution Networks Based on Synchronous Transients Energy Analysis

IEEE Transactions on Smart Grid, 2020
As a result of small fault current, high level of noise and a large penetration of distributed generators (DG), in the neutral non-effectively grounded medium-voltage (MV) distribution networks, it is quite difficult to locate the faulted line section ...
Xuewen Wang, Hengxu Zhang, Fang Shi, Qiuwei Wu, V. Terzija, Wei Xie, Cheng Fang   +6 more
semanticscholar   +1 more source

Building fault detection data to aid diagnostic algorithm creation and performance testing. [PDF]

, 2020
It is estimated that approximately 4-5% of national energy consumption can be saved through corrections to existing commercial building controls infrastructure and resulting improvements to efficiency.
Chen, Yan, Granderson, Jessica, Harding, Ari, Im, Piljae, Lin, Guanjing   +4 more
core   +2 more sources

Assessment of the Phase-to-Ground Fault Apparent Admittance Method with Phase/Ground Boundaries to Detect Types of Electrical Faults for Protective Relays Using Signature Library and Simulated Events

International Transactions on Electrical Energy Systems, 2022
Protective relays in electric power grids recognize the types of electrical faults in a few seconds. The most common detection method to detect the types of electrical faults is based on measuring the angle between the zero and negative sequence currents.
Emilio C. Piesciorovsky, Marissa E. Morales Rodriguez   +1 more
doaj   +1 more source

Fault Identification of DC Transmission Lines Based on Energy Ratio Analysis

Zhongguo dianli, 2020
HVDC transmission lines, being long in distance and crossing complex natural environments, are prone to lightning and short to ground faults. Aiming at this problem, a novel fault identification method is proposed based on energy ratio.
Peng ZHU, Xiangyang XIA, Mingde LI, Yunfei LEI, Li XIA, Zhengxiong ZHOU, Hai HUANG, Peng YIN, Yanpeng LUO, Guangcheng LI   +9 more
doaj   +1 more source

Ground motion prediction equations based on shallow crustal earthquakes in Georgia and the surrounding Caucasus

Earthquake Science, 2022
Strong ground motions caused by earthquakes with magnitudes ranging from 3.5 to 6.9 and hypocentral distances of up to 300 km were recorded by local broadband stations and three-component accelerograms within Georgia’s enhanced digital seismic network ...
Nato Jorjiashvili, Ia Shengelia, Tea Godoladze, Irakli Gunia, Dimitri Akubardia   +4 more
doaj   +1 more source