Abstract:
Maintaining power system security of large power system is one of
the challenging tasks to have secure operation point. The security assessment
is an essential task as it gives the knowledge about the system state in the
event of a contingency.
Contingency analysis technique is being widely used to predict the
effect of outages like buses, transmission lines, generators and inter-bus
transformers, these may cause transmission line over loading and bus
voltage limits violations.
At the present load in Sudanese National Grid is expected to increase
around (1700 MW), The main motivation of this work focuses on the
contingencies of transmission line outage by simulated the network on
NEPLAN Program to analyze the contingency (N-1) to have a good
margins for critical event which may occur in the transmission lines and
added SVC to violated buses to keep it in permissible limits and take a
necessary actions which keep the power system secure and reliable.
Lastly, the results was discussed the results of in case of precontingency,
post contingency and after add SVC, also conclusion and
recommendation are made.
