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

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.

A Novel of Fault Localization Method to Determine Fault Distance for Single Line to Ground Fault in the Distribution Network

2015 ◽  
Vol 785 ◽  
pp. 353-357
Author(s):  
L.J. Awalin ◽  
Hazlie Mokhlis ◽  
A.H.A. Bakar ◽  
Hazlee Azil Illias
Keyword(s):  
Input Data ◽  
Large Scale ◽  
Fault Location ◽  
Distribution Network ◽  
Distribution Networks ◽  
Voltage Sag ◽  
Test Results ◽  
Localization Method ◽  
Ground Fault ◽  
Location Algorithm

In this paper, a novel fault location algorithm in distribution networks based on combination of impedance based method is presented. The voltage sag and current swell from the measurement node are used as input data to estimate the fault distance. To improve the accuracy of the proposed method, the voltage sag and current swell in the un-faulted phase also considered. Test results using a large scale distribution network from Malaysia confirms the accuracy of the proposed method. A comparison is made with the existing method which shows that the proposed method gives more accurate fault distance.

Fast Earth Fault Location by Analysing the Character of the Initial Processes

1970 ◽  
Vol 111 (5) ◽  
pp. 55-58
Author(s):  
S. Gudzius ◽  
U. Karaliute ◽  
L. A. Markevicius ◽  
A. Morkvenas ◽  
R. Miliune
Keyword(s):  
Fault Detection ◽  
Fault Location ◽  
Electrical Equipment ◽  
Power Network ◽  
Power Networks ◽  
Network State ◽  
Earth Fault ◽  
State Identification ◽  
The Earth ◽  
Location Algorithm

Nowadays it is thought that distribution power networks have the ability to isolate damaged power network place by making optimal links, to identify the fault character, to recognize the character of transients, to establish the fault cause and estimate the state of electrical equipment. For such an objective, fast identification of the earth fault and its place location is a very important problem which requires reliable solutions. The paper describes the new algorithm of earth fault detection and location which is based on the analysis of the initial processes of the fault and its keystone elements. The earth fault detection and location algorithm has been implemented in distribution network state identification terminals. Ill. 6, bibl. 11 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.111.5.356

Single Phase Earth Fault Location in the Medium Voltage Distribution Networks

2009 ◽  
Vol 25 (25) ◽  
pp. 13-18 ◽  
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.

Fault Distance Identification Using Impedance and Matching Approaches on Distribution Network

2017 ◽  
Vol 8 (3) ◽  
pp. 770
Author(s):  
Lilik Jamilatul Awalin ◽  
H. Mokhlis ◽  
M. K. Rahmat ◽  
Sophi Shilpa ◽  
Fadi Albatsh ◽  
...  
Keyword(s):  
Fault Location ◽  
Distribution Network ◽  
Distance Estimation ◽  
Actual Data ◽  
Homogeneous Distribution ◽  
Comparison Result ◽  
Distance Calculation ◽  
Ground Fault ◽  
Three Phase ◽  
Complete Process

In this paper, impedance based method and matching approaches were used separately to detect three phase to ground fault (LLLGF). In order to observe the accuracy of each method, Non-homogeneous distribution network was used as a tested network. Actual data from TNB (Tenaga National Berhad) Malaysia was adopted to model the network by using PSCAD/EMTDC simulation program.  Both methods were tested to observe the accuracy of fault distance estimation. The comparison result shows different accuracy for each section which simulated in the middle of section. Based on the complexity of the distribution network, it possible to contribute difficulty to obtain the maximum accuracy. The result was obtained through the complete process which involves the database formation acquired through the PSCAD/EMTDC software simulator and the fault location distance calculation carried out by the MATLAB software.

scholarly journals Detecting the Fault Section in the Distribution Network with Distributed Generators Based on Optimal Placement of Smart Meters

2019 ◽  
Vol 19 (2) ◽  
pp. 28-34 ◽  
Author(s):  
Majid Dashtdar ◽  
Masoud Dashtdar
Keyword(s):  
Fault Location ◽  
Voltage Drop ◽  
Distribution Network ◽  
Distribution Networks ◽  
Optimal Number ◽  
Optimal Placement ◽  
Voltage Distribution ◽  
Smart Meters ◽  
Good Efficiency ◽  
Medium Voltage

AbstractOne of the most important issues in employing distribution networks is detecting the fault location in medium-voltage distribution feeders. Due to the vastness of distribution networks and growing distributed generation (DG) sources in this network, detection is difficult with the common methods. The aim of this paper is to present a method based on voltage distributed meters in a medium-voltage distribution network (by smart meters installed along the feeder) in order to detect the fault location in the presence of DG sources. Due to vastness of distribution network and cost of installing smart meters, it is not economically possible to install meters in all the Buses of the network. That’s why in this article, combination of genetic and locating algorithms and fault-based on voltage drop has been used to suggest a method to optimize the meter locations. In order to evaluate the efficiency of the method suggested, first we determine the optimal number and location of the meters and then we apply the fault that has been simulated in different Buses of the sample network, using PSCAD/EMTDC software. After results analysis, the fault location is estimated by MATLAB. Simulation results show that the fault locating method by optimal number of meters has good efficiency and accuracy in detecting faults in different spots and in different resistance ranges.

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