Fault Analysis and Differential Protection Scheme of Power Transformer using MATLAB/Simulink

Sulaiman Haruna Sulaiman, Abraham Celestine, Ibrahim Abdulwahab, Ismaila Mahmud, Nuraddeen Adam Iliyasu

Abstract


This paper presents a comprehensive analysis of power transformer protection through the modeling and simulation of a differential relay system. The research focuses on a three-phase 60 MVA, 50 Hz (132/33) KV power transformer with YnD11 configuration. The system was modeled using MATLAB/Simulink. The differential relay system plays a vital role in detecting internal faults within the power transformer. Upon detecting such faults, the relay generates a trip signal, which triggers the isolation of the faulty section from the rest of the power system. This protective measure aims to minimize damage to the transformer and ensure uninterrupted power supply. Through extensive modeling and simulation, this study evaluates the performance and effectiveness of the differential relay system. Various fault scenarios are tested, including internal faults, to assess the system's sensitivity and selectivity. The results obtained from the simulations provide valuable insights into the behavior and reliability of the proposed differential relay system. The study contributes to the field of power transformer protection by offering a comprehensive analysis and simulation framework, aiding in the design and optimization of protective schemes.


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References


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