MATLAB-SIMULINK-based simulation for digital differential relay protection of power transformer for educational purpose

2010 ◽  
Vol 21 (3) ◽  
pp. 475-483 ◽  
Author(s):  
B. Vahidi ◽  
E. Esmaeeli
Keyword(s):  
Power Transformer ◽  
Relay Protection ◽  
Educational Purpose ◽  
Matlab Simulink

scholarly journals Investigation of the Effects of the Arc Fault Resistance and Transient Resistance on the Overcurrent Ground Relay Protection Setting in Medium Voltage Electrical Power Lines

2020 ◽  
Vol 4 (1) ◽  
pp. 67-72
Author(s):  
Plamen Antonov Stanchev ◽  
Mediha Enver Mehmed-Hamza
Keyword(s):  
Power Transformer ◽  
Electrical Power ◽  
Relay Protection ◽  
Power Grids ◽  
Power Lines ◽  
Medium Voltage ◽  
Fault Resistance ◽  
Ground Fault ◽  
Determining Factors ◽  
Transient Voltages

In the medium voltage electrical power lines, the most common fault is the phase to ground fault. The determining factors for selection of the neutral grounding mode of the medium voltage electrical power lines are the selectivity of the relay protection, the transient voltages during phase to ground fault, the magnitude of the fault currents, etc. The paper studies the influence of the transient resistance of phase to ground fault on the selectivity and sensitivity of the earth fault protection when the neutral of the power transformer is grounded through active resistance in medium voltage power grids.

The Harmonic Analysis of Power System

2011 ◽  
Vol 317-319 ◽  
pp. 1241-1244
Author(s):  
You Jie Ma ◽  
Ya Guang Yang ◽  
Xue Song Zhou
Keyword(s):  
Power System ◽  
Harmonic Analysis ◽  
Electric Power ◽  
Power Transformer ◽  
Relay Protection ◽  
Electric Motors ◽  
Treatment Methods

This document mainly analyses the sources of harmonic and harmonic hazards in power system. The article mainly from a few key links of power system which are electric power capacitor, power transformer, electric motors, relay protection to illustrate harmonic hazards and described harmonic treatment methods.

scholarly journals Fault Analysis and Condition Monitoring of Transformer

2020 ◽  
Vol 9 (4) ◽  
pp. 1491-1494
Keyword(s):  
Fault Diagnosis ◽  
Condition Monitoring ◽  
Stability Condition ◽  
Power Transformer ◽  
Fault Analysis ◽  
System Stability ◽  
Load Management ◽  
Matlab Simulink ◽  
Monitoring Techniques ◽  
Transformer Model

The unscheduled outages of transformers, due to unexpected failures are creating more problems for load management and system stability. Condition monitoring is done on power transformer those monitor various parameters predict fault accruing possibility and reduced unscheduled outage. In this paper, different condition monitoring techniques have discussed. The transformer model is prepared with healthy and faulty conditions using MATLAB Simulink. L-G, L-L-G, and L-L-L-G fault have been discussed in this paper. Various parameters are used for condition monitoring and fault diagnosis.

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