Reliability evaluation of al-Mansour 11kV distribution network in Baghdad city

الملخص EN

Reliability is a key aspect of power system design and planning.

This work aims to evaluate and improve the reliability of a power distribution network in Baghdad city.

The minimal cut set method has been adopted for reliability evaluation.

Evaluating the reliability requires calculating and evaluating a set of reliability indices.

In this research, the reliability indices are calculated for Al_Mansour 11kV distribution network in Baghdad city.

According to these indices several improvements have been proposed and simulated on the network as follows:  Adding N/C manually switches in the network for isolating fault area and restoring the service to the remaining parts.

 Adding N/O manually switches to interconnect feeders and provide alternative supply.

 Replacing the manually switches by remotely controlled or fully automated switches with fault indicators to reduce interruption times.

 Replacing the overhead lines by underground cables to reduce the fault rates.

The software CYMDIST version 7.1 has been used as a tool for the simulation of the distribution network and performing the required analysis.