ANN based fault location for medium voltage distribution lines with remote-end source

Lightning strikes represent a considerable cause of short interruptions in electrical overhead line networks. The over voltages caused by lightning cannot be avoided but their influence can be limited by appropriate over voltage protection. This paper presents analysis study on some factors affecting the back flashover of Egyptian 66 kV distribution lines using Alternative Transient Program (ATP). The study includes the modeling of 66 kV distribution lines, the effects of magnitude and the front and tail times of lightning wave on the back flashover voltages, the effects of the striking distance, and the using of counterpoise wires on the back flashover on the 66 kV line towers. In this paper the 66 kV lines sag is neglected and the soil ionization by the flow of the stroke current is considered.

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Single Phase Earth Fault Location in the Medium Voltage Distribution Networks

Scientific Journal of Riga Technical University Power and Electrical Engineering ◽

10.2478/v10144-009-0002-6 ◽

2009 ◽

Vol 25 (25) ◽

pp. 13-18 ◽

Cited By ~ 2

Author(s):

Jevgēnijs Linčiks ◽

Dzintars Baranovskis

Keyword(s):

Fault Location ◽

Single Phase ◽

Distribution Networks ◽

High Accuracy ◽

Calculation Methods ◽

Voltage Distribution ◽

Medium Voltage ◽

Earth Fault ◽

Location Methods

Single Phase Earth Fault Location in the Medium Voltage Distribution NetworksThis paper gives a description of the single phase earth fault location methods in the medium voltage networks. The single phase earth fault location in the medium voltage distribution networks is problematic now. The technical devices which are using in Latvia now do not allow to detect the single phase earth faults fast and high accuracy. Fast earth fault location should be possible by using the equipments which are calculating distance to earth faults. But precisely calculate the distance to the single phase earth faults in the medium voltage networks is very difficult. The paper presents the single earth fault location methods including the calculation methods for fault distance.

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Reducing multiple estimation for fault location in medium voltage distribution networks

Electric Power Systems Research ◽

10.1016/j.epsr.2021.107424 ◽

2021 ◽

Vol 199 ◽

pp. 107424

Author(s):

Yan V. Tresso ◽

Ricardo A.S. Fernandes ◽

Denis V. Coury

Keyword(s):

Fault Location ◽

Distribution Networks ◽

Voltage Distribution ◽

Medium Voltage

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Evaluation of earth fault location algorithm in medium voltage distribution network with correction technique

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v9i3.pp1987-1996 ◽

2019 ◽

Vol 9 (3) ◽

pp. 1987

Author(s):

N. S. B. Jamili ◽

M. R. Adzman ◽

S. R. A. Rahim ◽

S. M. Zali ◽

M. Isa ◽

...

Keyword(s):

Fault Location ◽

Distribution Network ◽

Distance Estimation ◽

Voltage Distribution ◽

Medium Voltage ◽

Earth Fault ◽

Ground Fault ◽

The Earth ◽

Correction Technique ◽

Location Algorithm

This paper focused on studying an algorithm of earth fault location in the medium voltage distribution network. In power system network, most of the earth fault occurs is a single line to ground fault. A medium voltage distribution network with resistance earthing at the main substation and an earth fault attached along the distribution network is modeled in ATP Draw. The generated earth fault is simulated, and the voltage and current signal produced is recorded. The earth fault location algorithm is simulated and tested in MATLAB. The accuracy of the earth fault location algorithm is tested at several locations and fault resistances. A possible correction technique is explained to minimize the error. The results show an improvement fault location distance estimation with minimum error.

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