Assessment of overcurrent protection of PMU Pagoh using PSCAD software

Tan, Hong Yi (2024) Assessment of overcurrent protection of PMU Pagoh using PSCAD software. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Overcurrent protection is critical in protecting power systems from the damaging effects of high currents. Ensuring the efficacy and dependability of over-current protection in the context of the TNB (Tenaga Nasional Berhad) network is critical for sustaining a stable and resilient power supply. The purpose of this research is to evaluate the performance of overcurrent protection methods in the Pencawang Masuk Utama (PMU) at Pagoh using the extensive simulation capabilities of PSCAD software. The project begins with a detailed examination of the TNB network, which includes transmission lines, transformers, and distribution networks. PSCAD has accurate modelling of these components, allowing for detailed simulation of their behaviour under various failure circumstances. The software's considerable capabilities in simulating and analysing over-current reactions are used to assess existing protection methods. The TNB network model simulates many fault situations, including single-phase and three-phase faults of varying magnitudes and locations. The reactions of the protection system are thoroughly analysed to assess their efficiency and dependability, such as fault-clearing time and coordination among protective devices. The study also looks at potential enhancements to the over-current protection scheme, such as relay settings, coordination mechanisms, and the integration of new protection technologies. By evaluating the performance of overcurrent protection in the TNB network, this research hopes to discover flaws and propose solutions that would improve the system's overall dependability and stability. The study's results and suggestions will be useful for optimising over-current protection methods within TNB and can be adopted by other power utilities experiencing similar difficulties. Finally, this project contributes to the continual enhancement of the TNB network's protective infrastructure, guaranteeing that customers have a reliable and uninterrupted power supply.

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