Review of Operational Challenges and Solutions for DER Integration with Distribution Networks

Traditionally, distribution networks were designed for unidirectional flow of electricity, but due to integration of distributed energy resources there is bidirectional flow of power in the system. This bidirectional flow of power has given rise to new challenges in the distribution network. These challenges include voltage variations, fairness issue, protection problems and power system stability. Grid operators also require that all converters connecting these distributed energy resources with distribution network should have the fault ride through capabilities for system reliability. In this paper a summary of these challenges occurring due to integration of distributed energy resources in distribution network is described. Also, a review about the solutions for these challenges available in literature is presented.