N-1 Contingency Analysis for Offsite Power System of an HPR-1000 Power Plant Using ETAP Software

Electrical Power System is a very complex system, which involves many different types of components that are interconnected with each other. Failure of any of these components can cause power supply interruption. In some cases it can lead to the unbalancing of the grid, as well as the operation of certain components beyond their design basis. This can seriously effect a nuclear power plant and can lead to frequent plant trips and even cause blackouts. In this regard load flow analysis and contingency analysis is highly important. As it will highhght the effect of outages such as, changes in power flows through transmission lines, changes of frequency and bus voltages etc. In this paper load flow analysis and contingency analysis of 500 kV offsite power network of an Hualong Pressurised Reactor (HPR)-1000 power plant is performed by considering different outages. The overall system behavior and the effect of outages of crucial lines and bus faults of National Transmission and Distribution Company (NTDC) grid on HPR1000 is observed using Electric Transient Analyzer Program (ETAP) software.