PROTECTION-ORIENTED POWER SYSTEM STUDIES FOR THE ELECTRICAL NETWORK

Abstract: This thesis presents the power system analysis of an electrical network using ETAP software to evaluate steady- state performance, fault levels and protection coordination. Adaptive Newton–Raphson techniques are applied to assess the reliability, safety and operational effectiveness of the system. The electrical network is modelled in ETAP to analyze voltage profiles, fault current levels and relay coordination. Load flow analysis confirms that bus voltages remain within permissible limits and equipment operates within rated capacities. Short circuit analysis determines fault current levels for equipment verification, while protection coordination studies ensure selective operation of relays and circuit breakers with proper primary and backup protection. The study concludes that the electrical network operates reliably and efficiently under normal operating conditions. Further studies such as motor acceleration and transient stability analysis can also be performed to evaluate the dynamic performance and stability of the system.

Keywords: Power System Analysis, Protection Coordination and ETAP Modelling.