scholarly journals Analysis of Voltage Sag Due to Short Circuit on the Sub System in Central Sumatera

2018 ◽  
Vol 1 (2) ◽  
pp. 1-5
Author(s):  
Hamzah Eteruddin ◽  
Hendry Hendry ◽  
Atmam Atmam
Keyword(s):  
Power Quality ◽  
Fault Location ◽  
Short Circuit ◽  
Electrical Energy ◽  
Electrical Equipment ◽  
Fault Analysis ◽  
Voltage Sag ◽  
Voltage Dip ◽  
Three Phase ◽  
Short Circuit Fault

Power quality is closely related to electrical energy which is directly related to voltage and current interference. Electrical equipment used daily requires good power quality. The thing that affects the quality of the power is the voltage dip. Based on the IEEE 1159-1995 standard, voltage sag is a decrease in RMS voltage with duration of 0.5 cycle to 1 minute. Sag voltage that occurs can have an effect on electronic equipment and other problems that often arise in the industrial environment. Therefore, a short circuit fault analysis was conducted to determine the voltage sag based on the type of fault in the sub system in Central Sumatera. Short circuit fault analysis is done using Powerworld Simulator 7.0 Students Edition. This study is intended to determine the sag voltage when there is a short circuit fault. The biggest voltage sag occurs when a short circuit fault of single phase to ground at 75% fault location and the smallest voltage sag when the three-phase short circuit of 0.7 fault location.

Fault Analysis on Photo Voltaic Fed Grid Connected Systems

2014 ◽  
Vol 984-985 ◽  
pp. 1013-1022
Author(s):  
Venkatesan Jamuna ◽  
Natesan Saritha ◽  
N. Nanthini
Keyword(s):  
Power Quality ◽  
Short Circuit ◽  
Reference Signal ◽  
Fault Analysis ◽  
Pv System ◽  
Power Sources ◽  
Three Phase ◽  
Multi Level ◽  
Photo Voltaic ◽  
Grid Side

This work presents a photovoltaic (PV) system, connected to a three phase grid. This work focuses on fault analysis in a grid connected photo-voltaic (PV) energy system. In this work, a three phase Multi-level Inverter connected with an AC grid fed by photovoltaic systems with advanced sine PWM control scheme is presented. The proposed modulation technique uses single reference signal and number of high frequency carrier signals to generate the PWM signal. Now a days, most of the photovoltaic (PV) power sources are connected to the AC grid. When photovoltaic power sources are connected to grid, the grid connected PV system is affected by various power quality issues like voltage sag, voltage swell, voltage disturbances, waveform distortions and three phase fault. One of the main power quality problems is three phase fault and it is appeared in the grid due to short circuit condition between two phases and ground. Fault analysis is carried out by creating a LG, LL, LLL and LLLG fault in the grid connected systems. Grid side voltage, current and power waveforms at the grid side are analysed with fault conditions. A detailed simulation has been done for the Multi-Level Inverter and the validation of system is verified through MATLAB/SIMULINK and the results are presented.

scholarly journals Three-Phase Fault Analysis on Transmission Line in Matlab Simulink

2021 ◽  
Vol 9 (VI) ◽  
pp. 5386-5391
Author(s):  
Harshal Vilas Patil
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Short Circuit ◽  
Electrical Equipment ◽  
Fault Analysis ◽  
Single Line ◽  
Double Line ◽  
Ground Fault ◽  
Proposed Model ◽  
Three Phase

Now-a-days the demand of electricity or power areincreases day by day this results to transmits more power byIncreasing the transmission line capacity from one place to theother place. But during the transmission some faults areoccurred in the system, such as L-L fault (line to line), 1L-Gfault (single line to ground) and 2L-G fault (double line toground). These faults affect the power system equipmentswhich are connected to it. The main aim of this paper is tostudy or analysis of faults and also identifies the effect of thefault in transmission line along with bus system which isconnected to transmission line. Mainly the major faults in longtransmission lines is (L-G) single line to ground fault which areharmful to the electrical equipment. A proposed model intransmission line is simulated in MATLAB software to analysisand identified the faults. Fault block was taken from the sim-power system block library. The whole modeling andsimulation of different operating and different conditions offault on transmission line, their faults are L-G fault, 2L-Gfault, 3L-G fault and three line short circuit of the proposedwork is presented in this paper.

Fault Section Location in Distribution Network with DG Based on Voltage Sag Correlation Coefficient

2013 ◽  
Vol 787 ◽  
pp. 902-908 ◽  
Author(s):  
Xin Du ◽  
Min Fang Peng ◽  
Hong Mei Zeng ◽  
Liang Zhu ◽  
Hong Wei Che ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Distribution System ◽  
Fault Location ◽  
Short Circuit ◽  
Distribution Network ◽  
Voltage Sag ◽  
Search Range ◽  
Actual Distribution ◽  
Measuring Devices ◽  
Short Circuit Fault

A fault location method based on correlation coefficient was proposed in the paper for the distribution system with distributed generation (DG). At first, by acquiring the Thevenin equivalent parameters of each DG to establish simulation model of the actual distribution network. Then voltage sag feature vectors of each bus would be obtained by simulating short-circuit fault at the location of each bus, respectively. Afterwards, by calculating and analyzing the correlation coefficient between each bus and the actual fault node,, suspicious fault sections can be determined. Finally, the fault section was identified by utilizing the associated node of every suspicious fault section .The method could reduce the fault search range obviously, without a massive requirement of measuring devices, and the required data can be obtained easily. Simulation results of a 10kV distribution network with DG showed that the proposed method was accuracy and effective.

Short-Circuit Fault Location Interval Recognition Criteria in Electrical System

2019 ◽  
Vol 11 ◽  
pp. 33-39
Author(s):  
Yury Ya. LYAMETS ◽  
◽  
Mikhail V. MARTYNOV ◽  
Alexander N. MASLOV ◽  
◽  
...  
Keyword(s):  
Fault Location ◽  
Short Circuit ◽  
Electrical System ◽  
Short Circuit Fault
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