Method for distance estimation of single-phase-to-ground faults in electrical distribution networks with an isolated or compensated neutral

2007 ◽  
Vol 5 (3) ◽  
pp. 193-198 ◽  
Author(s):  
M. Lehtonen
Keyword(s):  
Single Phase ◽  
Distance Estimation ◽  
Distribution Networks ◽  
Electrical Distribution ◽  
Electrical Distribution Networks ◽  
Ground Faults

scholarly journals Parameters of Insulation Relative to the Ground in Quarry Distribution Networks of Mining Enterprises in the Republic of Tajikistan

2021 ◽  
Vol 21 (1) ◽  
pp. 29-37
Keyword(s):  
Single Phase ◽  
Distribution Networks ◽  
Network Capacity ◽  
Life Safety ◽  
State University ◽  
Earth Fault ◽  
Electrical Distribution ◽  
Electrical Distribution Networks ◽  
The Republic

The article discusses a brief description of the mining enterprises of the Republic of Tajikistan, the insulation level of 6 kV quarry distribution networks. The parameters of network insulation relative to the ground are indicated as determined on the basis of the methods developed at the Department of Life Safety, South Ural State University. The performed calculations of insulation relative to the ground in quarry electrical distribution networks of mining enterprises in the Republic of Tajikistan showed that the value of the capacitive currents of a single-phase earth fault lies in the 0.1–0.37 A range and depends on the level of development of the enterprise. Considering the change in the network quiescence coefficient, the active insulation resistances of the network phases relative to the ground are in the 18–112 kΩ range. The network capacity relative to the ground is in the 0.09–0.34 µF range. The data obtained is necessary for selecting a security tool and evaluating the level of security.

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

2020 ◽  
Vol 11 (1) ◽  
pp. 774-785 ◽  
Author(s):  
Xuewen Wang ◽  
Hengxu Zhang ◽  
Fang Shi ◽  
Qiuwei Wu ◽  
Vladimir Terzija ◽  
...  
Keyword(s):  
Single Phase ◽  
Energy Analysis ◽  
Distribution Networks ◽  
Ground Faults

scholarly journals Influence of Clandestine Connections on Energy Loss Evaluation in Electrical Distribution Networks

2020 ◽  
Author(s):  
Clainer B. Donadel ◽  
Gilberto C. D. Sousa ◽  
Flávio M. Varejão
Keyword(s):  
Artificial Intelligence ◽  
Developing Countries ◽  
Energy Loss ◽  
Loss Factor ◽  
Distribution Systems ◽  
Distribution Network ◽  
Distribution Networks ◽  
Operation Costs ◽  
Electrical Distribution ◽  
Electrical Distribution Networks

In the literature, there are several methodologies to estimate technical losses in electrical distribution networks. The range of techniques is broad, ranging from basic techniques (based on loss factor, for example) to sophisticated ones (based on artificial intelligence). These methodologies are important, because the costs of technical losses represent a huge part of the total operation costs of distribution network operators (DNOs). However, the presence of clandestine connections, common in developing countries, was not considered in the methodologies encountered in the literature. Clandestine connections occur when a consumer has made his/her connection without DNO permission. In these cases, the amount of energy consumed by a clandestine "consumer" is a nontechnical loss (and, therefore, should be correctly computed as nonbilled energy). Therefore, a new methodology is proposed to consider the presence of clandestine connections in energy loss estimation in distribution systems.

scholarly journals Optimal Segmentation of Electrical Distribution Networks

2021 ◽  
Vol 19 (8) ◽  
pp. 1375-1382
Author(s):  
Carlos Bonetti ◽  
Jezabel Bianchotti ◽  
Jorge Vega ◽  
Gabriel Puccini
Keyword(s):  
Distribution Networks ◽  
Electrical Distribution ◽  
Electrical Distribution Networks ◽  
Optimal Segmentation
Sign in / Sign up

Export Citation Format

Share Document