Distribution Network Expansion Planning Considering Reliability Indices and DER Optimal Placement

Reliability is a fundamental factor in distribution network expansion planning. To achieve high reliability, urban distribution networks operate in a meshed and radial manner, where the interrupted load can be restored to adjacent feeders through post-fault connection lines. Due to the integration of new technologies, power distribution systems have become more complex in recent years. In this article, by using the genetic algorithm, the best network arrangement is obtained in such a way that in addition to increasing the income of the distribution company, the SAIFI and SAIDI indicators are improved. According to the rules of the reliability reward-penalty scheme, two scenarios of DG presence and non-presence have been investigated according to the reliability limits and load distribution in the network. This planning has been investigated on a network of18 nodes (8 zones).