Simulation of Overcurrent Relay in 33kV Power Grid Protection
Nader Barsoum, Electrical and Electronics Engineering Faculty of Engineering, University Malaysia Sabah (UMS), Kota Kinabalu Sabah, Malaysia.
Karen Lee, Electrical and Electronics Engineering Faculty of Engineering, University Malaysia Sabah (UMS), Kota Kinabalu Sabah, Malaysia.
This research highlights the relay model of 33kV grid system related to Sandakan Power Grid using a simulation tool of Electrical Power System Analysis software (ETAP). Sandakan is a suburb of Sabah state in east Malaysia. ETAP is a software tool that is most comprehensive for integrated power system that has a full spectrum on simulation, optimization, control, and analysis of electrical power system modeling and operation. Voltage stability is important to maintain steady bus voltages and to operate at the normal condition. Sandakan grid suffers from uncontrollable drop in voltage which occurs due to the increase in load demand or overload or disturbance or change in system condition. This paper presents the relay model of 33kV Power Grid in ETAP for protection purpose. It is to determine the time multiplier setting (TMS) of overcurrent relay in each bus and to ensure that the minimum fault is interrupted when the protective devices isolate that fault anywhere in the system and to minimize the shock where the system can be intact as long as possible.
ETAP, Current Transformer, Overcurrent Relay, Time Multiplier Setting (TMS)
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