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Time And Current Grading For IDMT Relay Setting

Baharom, Mohamad Faizal (2009) Time And Current Grading For IDMT Relay Setting. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

System protection is an important part in the power network systems. The most important part in designing the protection needs to consider such a? the type of relays, the size of circuit breaker, the type and size of current transformer, the coordination of relays, and them component to maintain the stability of the system. Then to maintain the stability each relay in the power network must setting in proper technique in term of current and time operation. For this project, the relay that will be study is Inverse Definite minimum time IDMT MK2000 relay .This relay is part of non unit protection where protect the over current and earth fault at the system. This relay f~rmerlyis located at the Qislributi~nsu bstati~na nd use for back up protection and the major advantage of IDMT MK 2000 relays is their ability to dis~riminatet he time and current. In a radial feeder configuration, supplied fiom one end only, discrimination of faults can be achieved by incorporating time delays at each relay point. Once the system is set correctly, then discrimination is possible so that the nearest relay t~ the fault operate to isolate the smallest possible section in the shortest time. This study will be calculate the fault at the system network which is phase to phase fault, phase to earth fault and healthy condition. The simulation using Eracs software will be make for check the power load flow of the system, analysis the locati~no f fault during abfl~cdon dition and compare the value of simulate calculation with the manual calculation. This project also study about the setting and calculating the suitable time, current, plug setting and Time multiplier setting of the IDMT MK.2000 relay. In addition, this project will develop the current injector using the toroid magnet. The purpose of develop the current injector is to test the DMT MId200Q relay that has been setting.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Protective relays, Electric switchgear
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Library > Projek Sarjana Muda > FKE
Depositing User: Nor Ridzuan S.Kasehan
Date Deposited: 23 Mar 2012 03:08
Last Modified: 28 May 2015 02:24
URI: http://eprints.utem.edu.my/id/eprint/1646

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