Protection Scheme of a 3-Phase Induction Motor

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PLC BASED PROTECTION SCHEME OF 3-Φ INDUCTION MOTOR Authors Muhammad Tariq 08-EL-85 Supervisor Engr. Farhana Umer Lecturer DEPARTMENT OF ELECTRICAL ENGINEERING UNIVERSITY COLLEGE OF ENGINEERING & TECHNOLOGY The Islamia University of Bahawalpur Year-2012 PLC BASED PROTECTION SCHEME OF 3-Φ INDUCTION MOTOR By Muhammad Tariq 08-EL-85 THESIS SUBMITTED TO UCE&T, ISLAMIA UNIVERSITY OF PARTIAL FULFILLMENT FOR THE DEGREE OF BACHELORS IN ELECTRICAL (Power) ENGINEERING Research Supervisor Engr. Farhana Umer Lecturer DEPARTMENT OF ELECTRICAL ENGINEERING University College of Engineering and Technology, The Islamia University of Bahawalpur YEAR-2012 Table of Contents Abstract ………..vii Acknowledgement ix List…show more content…
Power System fault is defined as undesirable condition that occurs in the power system. These undesirable conditions such as short circuit, current leakage, ground short, over current and overvoltage and over-temperature. With the increasing loads, voltages and short-circuit duty in distribution system, over current protection has become more important today. The ability of protection system is demanded not only for economic reason but also consumers just expect ‘reliable’ service. In a Power System Protection, the system engineer would need a device that can monitor current, voltage, frequency, temperature and in some case over power in the system. Thus a device called Protective Relay is created to serve the purpose. The protective relay is most often relay coupled with Circuit Breaker such that it can isolate the abnormal condition in the system. In the interest of reliable

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